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HomeMy WebLinkAbout23SITE2 412MapleAve StormwaterManReport Rec021523 Stormwater Management Report New Industrial Development 412 Maple Avenue Uncasville-Montville, CT 06382 November 8, 2022 Prepared for: Advanced Associates, LLC P.O. Box 164 Uncasville-Montville, CT 06382 Prepared by: H+H Engineering Associates, LLC 232 Greenmanville Avenue Suite 201 Mystic, CT 06355 1 Table of Contents Page 1. INTRODUCTION 3 2. PURPOSE OF REPORT 3 3. BASIS OF DESIGN 5 4. HYDROLOGIC AND HYDRAULIC METHODS 5 5. STORMWATER MANAGEMENT 6 5.1 Pre-Development Drainage Area 6 5.2 Post-Development Drainage Areas 6 5.3 Proposed Condition Stormwater Management BMPs 6 5.4 Stormwater Management Area Outlet Locations 7 6. SOURCE CONTROL AND POLLUTION PREVENTION MAINTENANCE AND OPERATION 11 7. CONCLUSION 13 2 FIGURES FIGURE 1 – SITE LOCATION MAP FIGURE 2 – DRAINAGE AREA MAPS FIGURE 3 – STORMWATER RUNOFF SUMMARY FIGURE 4 – STAGE-STORAGE SUMMARIES TECHNICAL APPENDIX APPENDIX A – WATER QUALITY VOLUME AND WATER QUALITY FLOW CALCULATIONS APPENDIX B – RIP-RAP APRON DESIGN APPENDIX C – PRE-DEVELOPMENT HYDROCAD REPORT APPENDIX D – POST-DEVELOPMENT HYDROCAD REPORT 3 1. INTRODUCTION The project is located at 412 Maple Avenue in Uncasville-Montville, Connecticut (hereinafter referred to as the “Site”) and is further identified on the Town of Montville GIS as Map 31 Block 2 Lot 0A0. The Site is located off Maple Avenue, approximately 950 feet northwest of the intersection of CT-163 and Maple Avenue. The Site consists of approximately 6.86 acres that includes two separate commercial/industrial buildings in the southeast corner of the property with a paved drive and paved parking lot, and mostly undeveloped woodland for the remainder of the property (see Figure 1 – Site Location Map). The Site is in the Industrial ‘I’ Zoning District as defined by Section 13 of the Town of Montville Zoning Regulations (hereinafter “Zoning Regulations”). Abutting properties consist of commercial and industrial uses. The existing topography in the portion of the Site to be developed is steep, with contours ranging from elevation 212 along the western property line, to elevation 150 along the eastern property line. Per NRCS soil mapping, the underlying soil on the site mostly consists of Canton and Charlton fine sandy loams (Hydrologic Group B) with slopes varying between 3 and 35 percent. The Site is not located within a FEMA flood hazard zone, the Coastal Area Management Zone, or within a National Diversity Data Base (NDDB) Critical Area. The proposed development consists of the construction of a new 4,000 square-foot industrial building on the northern portion of the Site. Site improvements will include an extension of the access drive from the existing development up to the proposed building, a new parking lot, new utility connections and new stormwater management improvements. This report presents the basis of the project hydrologic and hydraulic analysis of the site, the design for the new site drainage systems, and Best Management Practices (BMPs) incorporated into the site design to manage and treat stormwater runoff in accordance with the 2004 CT DEEP Stormwater Quality Manual (SQM) and the Town of Montville Zoning Regulations. 2. PURPOSE OF REPORT This report presents the basis of design for stormwater management including drainage and stormwater treatment. The report demonstrates that the development:  Does not increase peak rates of runoff from watersheds encompassing the new building, access drive and parking area.  Does not degrade the quality of receiving groundwater, waterbodies, or watercourses.  Complies with the 2004 CT DEEP SQM and the Town of Montville Stormwater Management Standards. SITE CHECKED BY:DATE: DRAWN BY:DATE: PROJECT NO.SCALE: DRAWING: SHEET NUMBER:OF H HENGINEERINGASSOCIATES 232 GƂeeœőaœvijlle AveœƞeSƞijte 201MƼƊtijā, CT 06355 860-980-8008 ͬOͭͤ 413-5̌9-4488 ͬMͭ ƶƶƶ.ĮĮ-eœħijœeeƂƊ.āoő Z:\SHARED\H+H ENGINEERING ASSOCIATES\PROJECTS\2022\2022-0019 - P&H CONSTRUCTION - 410 & 412 MAPLE AVE, MONTVILLE\DWGS\DRAINAGE FIGURES.DWG Tab: FIGURE 1-SITE MAP Saved: 11/8/2022 4:58 PM Plotted: 11/8/2022 4:59 PMFIGURE 1 11 11/8/2022SMM 11/8/2022MAA 1"=1,000'2022-0019 P.O. BOX 164, UNCASVILLE-MONTVILLE, CT 06382 ADVANCED ASSOCIATES, LLC 412 MAPLE AVENUE, UNCASVILLE/MONTVILLE, CT NEW INDUSTRIAL DEVELOPMENT STORMWATER REPORT - SITE LOCATION MAP 1,0000500 SCALE IN FEET 1,000 5 3. BASIS OF DESIGN The grading, drainage and stormwater management improvements for the project are shown on the Grading & Drainage Plan. The basis of the grading and drainage design is as follows: 1. Rainfall data is from the National Weather Service NOAA Atlas 14, Volume 10, Version 3. 2. Drainage systems are designed to meet the greatest extent practical water quality and peak rate of runoff goals established in the CT DEEP SQM. 3. Stormwater treatment Best Management Practices (BMPs) are designed to remove pollutants, such as nutrients, solids, metals, pathogens, pesticides, and hydrocarbons from stormwater runoff and to reduce temperatures of runoff from paved surfaces during hot weather. 4. BMPs for this project include one underground infiltration/detention system with isolator rows designed to manage and treat runoff generated from the proposed building rooftop and a portion of the parking lot, and two rain gardens designed to manage and treat runoff generated from portions of the parking lot and access drive. 5. A rip-rap apron is located at the discharge for the proposed outlet control structure to reduce velocities and has been sized for the 25-year storm event. The apron is designed in accordance with the State of Connecticut Department of Transportation Drainage Manual, dated October 2000 (Technical Appendix). 4. HYDROLOGIC AND HYDRAULIC METHODS The methods described in Urban Hydrology for Small Watersheds, 2nd Edition, (Technical Release Number 55 [TR-55]) from the Natural Resources Conservation Service formerly the Soil Conservation Service – [SCS], 1986) were used to calculate stormwater peak-flow generated from pre- and post-development conditions. These methods, which are incorporated into the HydroCAD computer software program, use well documented procedures to calculate stormwater runoff volume, peak-flow rate of discharge, hydrographs and storage volumes required for floodwater reservoirs in small watersheds. The method uses the SCS Runoff Curve Number method to estimate runoff volume, calculates times of concentration, produces tabular hydrographs and estimates basin storage capacity. Output data from all computer analysis and design are provided in the Technical Appendix. This report presents the basis of the hydrologic and hydraulic analysis and design of the stormwater management including drainage and stormwater treatment systems completed in accordance with the Connecticut Department of Transportation Drainage Manual (Drainage Manual). The report also presents a Stormwater Management Plan prepared in accordance, to the greatest extent practical, with the 2004 CT DEEP SQM. Times of concentration applicable to the pre- and post-development were developed using the NRCS-velocity method. A minimum time of concentration of 5 minutes was used for paved surfaces and 10 minutes for vegetated areas. 6 5. STORMWATER MANAGEMENT The existing portion of the site to be developed is vacant, undeveloped woods/brush. Site improvements will increase impervious areas, resulting in rate and volume increases of stormwater runoff from the Site. Hydrologic analyses of pre- and post-development conditions were completed to assess these increases and to design mitigation measures for water quality and to reduce post-development discharges. 5.1 Pre-Development Drainage Area The existing drainage pattern for the site in the vicinity of the proposed improvements consists of one drainage area as shown on Figure 2 – Drainage Area Maps, and described as follows:  DA1: Approximately 2.76 acres of woods.. 5.2 Post-Development Drainage Areas The proposed development results in the modification of the drainage areas along with changes in impervious coverage (building rooftop, pavement surfaces and concrete surfaces). These conditions are shown on Figure 2 – Drainage Area Maps, and described as follows: DA1: for analysis purposes the proposed condition DA1 was subdivided into 5 subareas.  DA1A: Approximately 0.37 acres of paved parking areas along with wooded upland and new lawn areas that drain to a new rain garden.  DA1B: Approximately 0.38 acres of new building rooftop and paved parking that drains to an ADS Stormtech MC-3500 underground infiltration system.  DA1C: Approximately 1.09 acres of existing woods and brush and a portion of the new access drive..  DA1D: Approximately 0.25 acres of paved access drive and lawn area that drains to a new rain garden.  DA1E: Approximately 0.67 acres of new lawn and existing wood/brush runoff to remain undisturbed. Modeling results for the pre- and post-development drainage areas are provided in Figure 3 – Stormwater Runoff Summary, and the hydrologic and hydraulic modeling parameters are provided in the HydroCAD printouts (Technical Appendix). 5.3 Proposed Condition Stormwater Management BMPs For the post-development conditions, the intent of the proposed stormwater management improvements is to route stormwater runoff from the impervious surfaces through the proposed stormwater BMPs to provide water quality treatment, peak rate reduction, and promote groundwater recharge through infiltration. Three separate Stormwater Management Areas are included in the design and are described below:  Stormwater Management Area A: Rain Garden – The rain garden is designed to treat and infiltrate in excess of the Water Quality Volume (WQV) from the contributing area and mitigate peak rate of runoff for larger storm events. The permeability of the underlying 7 natural soil was measured on site and determined to be 9.6 feet/day (4.8 inches/hour). An infiltration rate of 2.4 inches/hour was used for design purposes after applying a Factor of Safety of 2.0 in accordance with the 2004 CT DEEP SQM. The rain garden will treat stormwater runoff by allowing planting to remove pollutants, such as nutrients, solids, metals, pathogens, pesticides, and hydrocarbons from stormwater runoff. Infiltration will also allow for additional cleansing and will reduce temperatures of runoff from paved surfaces during hot weather.  Stormwater Management Area B: ADS Stormtech MC-3500 Underground Infiltration System – Two catch basins within the parking area collect and direct surface runoff to the proposed infiltration system. The proposed ADS Stormtech MC-3500 infiltration system will treat stormwater runoff through filtration using three isolator rows sized to treat in excess of the Water Quality Flow (WQF).. The MC-3500 chambers are connected to an outlet control structure which provides an outlet for discharge of large storm events. An infiltration rate of 2.4 inches/hour was used for design purposes, as previously noted.  Stormwater Management Area C: Rain Garden – The rain garden is designed to treat and infiltrate in excess of the Water Quality Volume (WQV) from the contributing area and mitigate peak rate of runoff for larger storm events. An infiltration rate of 2.4 inches/hour was used for design purposes, as previously noted. The Water Quality Volume & Water Quality Flow Calculations for Stormwater Management Areas A, B & C are included in the Technical Appendix. A summary of the stage and storage volume for Stormwater Management Areas A, B & C is included in Figure 4 – Stage-Storage Summaries. 5.4 Stormwater Management Area Outlet Locations The outlet locations for each proposed Stormwater Management Area are described below:  Stormwater Management Area A: Overflow from large storm events will exit the raingarden via a 15’ long rip-rap spillway as shown on the Grading & Drainage Plan.  Stormwater Management Area B: Overflow from large storm events is directed through an outlet control structure to a wooded area to the east of the development, which then sheetflows overland to an existing wetland on site.  Stormwater Management Area C: Overflow from large storm events will exit the raingarden via a 15’ long rip-rap spillway as shown on the Grading & Drainage Plan. PROPOSED DRAINAGE AREA 'DA1A' 16,168 SQ. FT. (IMP=3,613 SQ. FT.) (GRASS=6,040 SQ. FT.) (WOODS POOR=(6,492 SQ. FT.) PROPOSED DRAINAGE AREA'DA1B'16,665 SQ. FT. (IMP=16,665 SQ. FT.) PROPOSED DRAINAGE AREA 'DA1C' 47,357 SQ. FT. (IMP=709 SQ. FT.) (GRASS=23,674 SQ. FT.) (WOODS POOR=(22,996 SQ. FT.) PROPOSED DRAINAGE AREA'DA1D'10,643 SQ. FT. (IMP=4,387 SQ. FT.) (GRASS=6,254 SQ. FT.) PROPOSED DRAINAGE AREA 'DA1E' 29,159 SQ. FT. (GRASS=9,022 SQ. FT.) (WOODS POOR=(20,116 SQ. FT.) 188188 187 184183182181180179178177176175 174 173 17118 6 187186185 186185184 183 186 170 169168167172 166165164163162156 155 THͲ1 THͲ2 21 0 20 0 19 0 180 1 7 0 1 6 0 150210 200 190 180 1 7 0 EXISTING DRAINAGE AREA 'DA1' 121,965 SQ. FT. (WOODS POOR=(112,9650 SQ. FT.) 21 0 20 0 19 0 180 1 7 0 1 6 0 150210 200 190 180 1 7 0 E N S W 30015 SCAaE IN FEET 30 POSTͲDEÍEaOPMENT DRAINAGE AREA MAP SCAaE͙ 1͢ = 30' PREͲDEÍEaOPMENT DRAINAGE AREA MAP SCAaE͙ 1͢ = 30'DESCRIPTION OF REÍISIONDRAWING SHEET N¶MBER͙ H HENGINEERINGASSOCIATES 232 GƂĎĎœőåœƵijʼnʼnĎ AƵĎœƞĎ SƞijƖĎ 201 MƼƊƖijā, CT 06355 860Ͳ980Ͳ8008 (O)ͤ 413Ͳ579Ͳ4488 (M) ƶƶƶ.ĮĮͲĎœħijœĎĎƂƊ.āŜő OF CHEC_ED BÔ͙DATE͙ DRAWN BÔ͙DATE͙ PRO]ECT NO.SCAaE͙DATEAPPR.REÍ.STAMPPREPARED FOR͙PROPERTÔ ADDRESS͙DRAINAGE AREA MAPSNEW IND¶STRIAa DEÍEaOPMENT412 MAPaE AÍEN¶E, ¶NCASÍIaaEͲMONTÍIaaE, CT 06382ADÍANCED ASSOCIATES, aaCP.O. BOX 164, ¶NCASÍIaaEͲMONTÍIaaE, CT 063822022Ͳ0019 1͢ = 30' MAA 11ͥ1ͥ2022 SMM 11ͥ1ͥ2022 1 1 DAͲ1 Þ͙͖SHARED͖HΤH ENGINEERING ASSOCIATES͖PRO]ECTS͖2022͖2022Ͳ0019 Ͳ PπH CONSTR¶CTION Ͳ 410 π 412 MAPaE AÍE, MONTÍIaaE͖DWGS͖DRAINAGE FIG¶RES.DWG TåĀ͙ FIG¶RE 2ͲDRAINAGE FIG¶RES SåƵĎĈ͙ 11ͥ8ͥ2022 5͙01 PM PʼnŜƖƖĎĈ͙ 11ͥ8ͥ2022 5͙01 PM RUNOFF VOLUME (CF) SUMMARY STORMFREQUENCY TOTAL SITE DISCHARGE EXISTING PROPOSED CHANGE WQV 0 0 --- 2 YEAR 7,733 5,242 -2,491 10 YEAR 18,098 12,734 -5,364 25 YEAR 25,593 18,990 -6,603 100 YEAR 38,116 31,168 -6,948 PEAK RATE OF RUNOFF (CFS) SUMMARY STORMFREQUENCY TOTAL SITE DISCHARGE EXISTING PROPOSED CHANGE WQV 0.00 0.00 --- 2 YEAR 1.69 1.26 -0.43 10 YEAR 4.50 3.24 -1.26 25 YEAR 6.54 5.38 -1.16 100 YEAR 9.89 9.81 -0.08 CHECKED BY:DATE: DRAWN BY:DATE: PROJECT NO.SCALE: DRAWING: SHEET NUMBER:OF H HENGINEERINGASSOCIATES 232 GƂeeœőaœvijlle AveœƞeSƞijte 201MƼƊtijā, CT 06355 860-980-8008 (O)ͤ 413-579-4488 (M) ƶƶƶ.ĮĮ-eœħijœeeƂƊ.āoő Z:\SHARED\H+H ENGINEERING ASSOCIATES\PROJECTS\2022\2022-0019 - P&H CONSTRUCTION - 410 & 412 MAPLE AVE, MONTVILLE\DWGS\DRAINAGE FIGURES.DWG Tab: FIGURE 3-RUNOFF SUMMARY Saved: 11/8/2022 5:01 PM Plotted: 11/8/2022 5:02 PMFIGURE 3 11 11/8/2022SMM 11/8/2022MAA NOT TO SCALE2022-0019 P.O. BOX 164, UNCASVILLE-MONTVILLE, CT 06382 ADVANCED ASSOCIATES, LLC 412 MAPLE AVENUE, UNCASVILLE/MONTVILLE, CT NEW INDUSTRIAL DEVELOPMENT STORMWATER REPORT - STORMWATER RUNOFF SUMMARY STORMWATER MANAGEMENT AREA 'B' ADS STORMTECH MC-3500 INFILTRATION SYSTEM STORM FREQUENCY WATER SURFACE ELEVATION (FT.)STORAGE VOLUME (CF) WQV 175.97 224 2 YEAR 177.25 1,702 10 YEAR 178.26 3,032 25 YEAR 179.04 3,964 100 YEAR 179.47 4,427 ADS STORMTECH SC-740 INFILTRATION SYSTEM ELEVATIONS: TOP OF STONE ELEV. = 181.15 TOP OF CHAMBER ELEV. = 180.15 BOTTOM OF CHAMBER ELEV. = 176.40 BOTTOM OF STONE ELEV. = 175.65 OUTLET CONTROL STRUCTURE ELEVATIONS: TOP OF FRAME (MANHOLE COVER) ELEV. = 186.00 RECTANGULAR WEIR INV. ELEV. = 180.25 15" INV. IN ELEV. = 176.55 6" LOW FLOW ORIFICE = 179.00 EXFILTRATION RATE = 2.4 IN/HR RAIN GARDEN AREA 'A' STORM FREQUENCY WATER SURFACE ELEVATION (FT.)STORAGE VOLUME (CF) WQV 183.00 0 2 YEAR 184.59 703 10 YEAR 185.05 1,132 25 YEAR 185.09 1,175 100 YEAR 185.13 1,214 TOP OF BERM = 185.30 TOP OF SPILLWAY = 185.00 BOTTOM OF BASIN = 183.00 CHECKED BY:DATE: DRAWN BY:DATE: PROJECT NO.SCALE: DRAWING: SHEET NUMBER:OF H HENGINEERINGASSOCIATES 232 GƂeeœőaœvijlle AveœƞeSƞijte 201MƼƊtijā, CT 06355 860-980-8008 (O)ͤ 413-579-4488 (M) ƶƶƶ.ĮĮ-eœħijœeeƂƊ.āoő Z:\SHARED\H+H ENGINEERING ASSOCIATES\PROJECTS\2022\2022-0019 - P&H CONSTRUCTION - 410 & 412 MAPLE AVE, MONTVILLE\DWGS\DRAINAGE FIGURES.DWG Tab: FIGURE 4-SW PRACTICE SUMMARY Saved: 11/8/2022 5:03 PM Plotted: FIGURE 4 11 11/8/2022SMM 11/8/2022MAA NOT TO SCALE2022-0019 P.O. BOX 164, UNCASVILLE-MONTVILLE, CT 06382 ADVANCED ASSOCIATES, LLC 412 MAPLE AVENUE, UNCASVILLE/MONTVILLE, CT NEW INDUSTRIAL DEVELOPMENT STORMWATER REPORT - STORMWATER TREATMENT PRACTICES STAGE-STORAGE SUMMARIES RAIN GARDEN AREA 'C' STORM FREQUENCY WATER SURFACE ELEVATION (FT.)STORAGE VOLUME (CF) WQV 156.01 4 2 YEAR 157.08 625 10 YEAR 157.91 1,349 25 YEAR 158.04 1,485 100 YEAR 158.10 1,547 TOP OF BERM = 158.30 TOP OF SPILLWAY = 158.00 BOTTOM OF BASIN=156.00 11 6. SOURCE CONTROL AND POLLUTION PREVENTION MAINTENANCE AND OPERATION Source control and pollution prevention practices for this project are intended to eliminate the generation of pollutants at their source, reduce the types and concentration of pollutants in stormwater runoff and to assure that the BMPs continue to function to remove oil and grease and TSS. The site property managers will be responsible for maintaining the stormwater management system and the goal of this section is to inform managers about system operations. The following maintenance and operation measures are recommended for source control. Parking Lots The access drive and parking areas shall be swept once per year, preferably after the end of the winter sanding season. Landscaping Normal landscaping maintenance shall consist of pruning, mulching, planting, mowing lawns, raking leaves, etc. Use of fertilizers and pesticides will be controlled and limited to minimal amounts necessary for healthy landscape maintenance. Trees will be fertilized no more than once in the spring with an organic fertilizer. Shrubs and lawn will be fertilized with an organic slow-release fertilizer each spring. Liming of lawn areas to control pH will also be done in the spring if soil testing indicates that it is necessary. Pesticides will only be used as a control method when a problem has been clearly identified and other natural control methods are not successful. All pesticide applications shall be by licensed applicators, where necessary. Outdoor Storage There will be no outdoor storage of hazardous chemicals, fertilizer, pesticides, or herbicides anywhere on site. Snow Removal & Storage Snow shall be shoveled and plowed from sidewalk and parking areas as soon as practical during and after winter storms and deposited in snow storage areas on the site or removed. Catch Basins and Manholes A Connecticut-Licensed hauler shall pump the sumps of onsite catch basins and drainage manholes and shall dispose of the sand legally. Road sand may be reused for winter sanding but may not be stored on-site. As part of the hauling contract, the hauler shall notify the property owner in writing where the material is being disposed. For the first three years each catch basin and drainage manhole shall be inspected every four months, with one inspection occurring during the month of April. Any debris occurring within one foot from the bottom of each sump shall be removed by Vacuum “Vactor” type of 12 maintenance equipment. After the first three years the inspection schedule may be adjusted to meet actual operating conditions, however, one inspection shall always be conducted in April. Stormtech underground infiltration systems and Isolator Rows The Isolator rows shall be cleaned at the end of construction once the contributing areas are fully stabilized. For the first year of operation following construction, the chamber rows shall be inspected once every 6 months. After the first year of operation, the chambers shall be inspected a minimum of once per year. If upon visual inspection it is found that sediment has accumulated, a stadia rod should be inserted to determine the depth of the sediment. When the average depth of accumulation exceeds 3", a clean-out should be performed and properly disposed off-site. Clean-out should be accomplished using a Jetvac process. A detailed maintenance logbook shall be kept on-site for the units by the property owner/manager. Information is to include, but not be limited to, the date of inspection, record of sediment depth, general observations, and date of cleaning performed. Maintenance of all Stormtech systems should follow all manufacturers’ recommendations. Rain Gardens No pesticides or non-organic fertilizers shall be used in areas draining to the rain garden. The rain garden shall be inspected every six months and/or after storm events of 2 inches of rainfall or greater. Inspections shall include the following:  Inspect basin for standing water or other evidence of clogging.  Check for sediment accumulation, trash, and debris.  Check for blockages, structural integrity, and evidence of erosion at inlets and overflow spillways. Regular maintenance of the rain gardens shall include the following:  Basin floor and side slopes shall be mowed 4" to 6" as needed. Grass clippings, leaves and accumulated sediment and debris shall be removed.  Prune shrubs as needed.  Remove excess leaves, debris, and excess sediment from the bottom of the basin, as necessary.  If there is an accumulation of organic debris or sediment on the floor of the basin, or if ponded water is regularly observed more than 48 hours after a rainfall event, the top 6" shall be removed and the exposed soil surface rototilled to a depth of 12". Sedimentation should be removed when it is visibly dry and readily separates from the basin floor to minimize smearing. After this work has been done, the bottom of the rain garden shall be restored to its original condition.  Inspect soil and repair eroded areas seasonally or as necessary.  Remove any invasive species (including roots) that have become established within the basin and embankments. 13 7. CONCLUSION The new site improvements are consistent with the applicable zoning regulations. BMPs were incorporated in the site design that attenuate post-development runoff rates, treat the WQV/WQF and infiltrate the WQV and GRV from the development. Overall, the stormwater management system provides quantitative and qualitative improvements for the site. Technical Appendices for Stormwater Management Report New Industrial Development 412 Maple Avenue Uncasville-Montville, CT 06382 November 8, 2022 Prepared for: Advanced Associates, LLC P.O. Box 164 Uncasville-Montville, CT 06382 Prepared by: H+H Engineering Associates, LLC 232 Greenmanville Avenue Suite 201 Mystic, CT 06355 Appendix A – Water Quality Volume and Water Quality Flow Calculations Project:412 Maple Avenue, Montville CT Calculated By Date Client:Advanced Associates, LLC SMM 11/8/2022 Water Quality Volume (WQV) 0.37 ac A = Area draining to the practice 0.08 ac AI = Impervious area draining to the practice 0.22 decimal I = Percent impervious area draining to the practice, in decimal form 0.25 unitless RV = Runoff coefficient = 0.05 + (0.9 x I) 0.09 ac-in WQV = 1" x RV x A 335 cf WQV conversion (ac-in x 43,560 sf/ac x 1ft/12") Water Quality Flow (WQF) 1.00 inches P = amount of rainfall. 0.25 inches Q = Water Quality Depth. Q=WQV/A 88 unitless CN = unit peak discharge curve number. CN=1000/(10+5P+10Q-10*[Q2+1.25*Q*P]0.5) 1.4 inches S = potential maximum retention. S = (1000/CN) - 10 0.276 inches Ia = initial abstraction. Ia=0.2S minutes Tc = Time of Concentration cfs/mi2/in qu is the unit peak discharge. Obtain this value from TR-55 exhibits 4-II and 4-III 0.000 cfs WQF = qu x WQV. Conversion: to convert "cfs/mi2/in * ac-in" to "cfs" multiply by 1mi2/640ac Stormwater Management Area 'A' Rain Garden Sizing Calculations: Top of Berm Elevation = 185.30 Spillway Elevation = 185.00 Storage Capacity Below Spillway Elevation = 1,078 CF Storage Capacity Below Spillway Elevation = 322% WQV Therefore, raingarden is sized to accommodate first 3.2" of rainfall WQV & WQF CALCULATIONS - STORMWATER MANAGEMENT AREA 'A' Designer Notes: Project:412 Maple Avenue, Montville CT Calculated By Date Client:Advanced Associates, LLC SMM 11/8/2022 Water Quality Volume (WQV) 0.38 ac A = Area draining to the practice 0.38 ac AI = Impervious area draining to the practice 1.00 decimal I = Percent impervious area draining to the practice, in decimal form 0.95 unitless RV = Runoff coefficient = 0.05 + (0.9 x I) 0.36 ac-in WQV = 1" x RV x A 1,310 cf WQV conversion (ac-in x 43,560 sf/ac x 1ft/12") Water Quality Flow (WQF) 1.00 inches P = amount of rainfall. 0.95 inches Q = Water Quality Depth. Q=WQV/A 100 unitless CN = unit peak discharge curve number. CN=1000/(10+5P+10Q-10*[Q2+1.25*Q*P]0.5) 0.0 inches S = potential maximum retention. S = (1000/CN) - 10 0.009 inches Ia = initial abstraction. Ia=0.2S 5.0 minutes Tc = Time of Concentration 650.0 cfs/mi2/in qu is the unit peak discharge. Obtain this value from TR-55 exhibits 4-II and 4-III 0.367 cfs/mi2/in WQF = qu x WQV. Conversion: to convert "cfs/mi2/in * ac-in" to "cfs" multiply by 1mi2/640ac Stormwater Management Area 'B' ADS Stormtech MC-3500 Infiltration System ADS Stormtech MC-3500 Isolator Row Sizing: Three isolator rows are provided. Treated flow rate = 0.40 CFS / unit X 21 units = 8.4 CFS Contributing WQF = 0.35 CFS Treated flow rate > WQF (Inflow rate from 100-year storm event = 3.01 CFS) qu obtained from exhibit 4-III for NRCS type III rainfall distribution WQV & WQF CALCULATIONS - STORMWATER MANAGEMENT AREA 'B' Designer Notes: Project:412 Maple Avenue, Montville CT Calculated By Date Client:Advanced Associates, LLC SMM 11/8/2022 Water Quality Volume (WQV) 0.25 ac A = Area draining to the practice 0.10 ac AI = Impervious area draining to the practice 0.40 decimal I = Percent impervious area draining to the practice, in decimal form 0.41 unitless RV = Runoff coefficient = 0.05 + (0.9 x I) 0.10 ac-in WQV = 1" x RV x A 372 cf WQV conversion (ac-in x 43,560 sf/ac x 1ft/12") Water Quality Flow (WQF) 1.00 inches P = amount of rainfall. 0.41 inches Q = Water Quality Depth. Q=WQV/A 92 unitless CN = unit peak discharge curve number. CN=1000/(10+5P+10Q-10*[Q2+1.25*Q*P]0.5) 0.9 inches S = potential maximum retention. S = (1000/CN) - 10 0.170 inches Ia = initial abstraction. Ia=0.2S minutes Tc = Time of Concentration cfs/mi2/in qu is the unit peak discharge. Obtain this value from TR-55 exhibits 4-II and 4-III 0.000 cfs WQF = qu x WQV. Conversion: to convert "cfs/mi2/in * ac-in" to "cfs" multiply by 1mi2/640ac Stormwater Management Area 'C' Rain Garden Sizing Calculations: Top of Berm Elevation = 158.30 Spillway Elevation = 158.00 Storage Capacity Below Spillway Elevation = 1,441 CF Storage Capacity Below Spillway Elevation = 387% WQV Therefore, raingardens sized to accommodate first 3.8" of rainfall WQV & WQF CALCULATIONS - STORMWATER MANAGEMENT AREA 'C' Designe r Notes: Appendix B – Rip-Rap Apron Design Outlet Protection Design Outlet #1 Reference: A.     Apron width at culvert end (W1) = 3 Sp where Sp = outlet pipe diameter B.     Apron length (La) = 1.8 (Q-5) + 10 (Sp)3/2 C.     Apron width at downstream end (W) = 3Sp + 0.7La where La = apron length Type A Riprap Apron (Tailwater Condition) : TW<0.5 dia of outlet Peak Q(100yr)=0.54 cfs PIPE DIA=1.25 ft A. W1= 3(Sp ) = ft 4 ft B. La = 1.8 ( Q-5 ) + 10 = ft 5 ft (Sp) 1.5 C. W2 = 3(Sp ) + 0.7(La) = ft 8 ft V(25yr)=10.72 fps Therfore; Use Standard Riprap Connecticut Department of Transportation Drainage Manual, Dated October 2000 Appendix C – Pre-Development HydroCAD Report DA1 DA1 TSD Total Site Discharge Routing Diagram for pre developmentPrepared by HH Engineering Assoc, Printed 11/8/2022 HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 2HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 WQV Type III 24-hr Default 24.00 1 1.00 2 2 2-Year Type III 24-hr Default 24.00 1 3.45 2 3 10-Year Type III 24-hr Default 24.00 1 5.12 2 4 25-Year Type III 24-hr Default 24.00 1 6.16 2 5 100-Year Type III 24-hr Default 24.00 1 7.76 2 pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 3HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (sq-ft) CN Description (subcatchment-numbers) 119,995 66 Woods, Poor, HSG B (DA1) 119,995 66 TOTAL AREA pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 4HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (sq-ft) Soil Group Subcatchment Numbers 0 HSG A 119,995 HSG B DA1 0 HSG C 0 HSG D 0 Other 119,995 TOTAL AREA pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 5HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (sq-ft) HSG-B (sq-ft) HSG-C (sq-ft) HSG-D (sq-ft) Other (sq-ft) Total (sq-ft) Ground Cover Subcatchment Numbers 0 119,995 0 0 0 119,995 Woods, Poor D A 1 0 119,995 0 0 0 119,995 TOTAL AREA Type III 24-hr WQV Rainfall=1.00"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 6HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.04 hrs, 1801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=119,995 sf 0.00% Impervious Runoff Depth=0.00"Subcatchment DA1: DA1 Flow Length=516' Tc=12.5 min CN=66 Runoff=0.00 cfs 0 cf Inflow=0.00 cfs 0 cfLink TSD: Total Site Discharge Primary=0.00 cfs 0 cf Total Runoff Area = 119,995 sf Runoff Volume = 0 cf Average Runoff Depth = 0.00" 100.00% Pervious = 119,995 sf 0.00% Impervious = 0 sf Type III 24-hr WQV Rainfall=1.00"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 7HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA1: DA1 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 119,995 66 Woods, Poor, HSG B 119,995 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 100 0.2220 0.21 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 4.6 416 0.0910 1.51 Shallow Concentrated Flow, SHALLOW Woodland Kv= 5.0 fps 12.5 516 Total Type III 24-hr WQV Rainfall=1.00"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 8HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,995 sf, 0.00% Impervious, Inflow Depth = 0.00" for WQV event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 2-Year Rainfall=3.45"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 9HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.04 hrs, 1801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=119,995 sf 0.00% Impervious Runoff Depth=0.77"Subcatchment DA1: DA1 Flow Length=516' Tc=12.5 min CN=66 Runoff=1.69 cfs 7,733 cf Inflow=1.69 cfs 7,733 cfLink TSD: Total Site Discharge Primary=1.69 cfs 7,733 cf Total Runoff Area = 119,995 sf Runoff Volume = 7,733 cf Average Runoff Depth = 0.77" 100.00% Pervious = 119,995 sf 0.00% Impervious = 0 sf Type III 24-hr 2-Year Rainfall=3.45"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 10HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA1: DA1 Runoff = 1.69 cfs @ 12.20 hrs, Volume= 7,733 cf, Depth= 0.77" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 119,995 66 Woods, Poor, HSG B 119,995 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 100 0.2220 0.21 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 4.6 416 0.0910 1.51 Shallow Concentrated Flow, SHALLOW Woodland Kv= 5.0 fps 12.5 516 Total Type III 24-hr 2-Year Rainfall=3.45"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 11HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,995 sf, 0.00% Impervious, Inflow Depth = 0.77" for 2-Year event Inflow = 1.69 cfs @ 12.20 hrs, Volume= 7,733 cf Primary = 1.69 cfs @ 12.20 hrs, Volume= 7,733 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 10-Year Rainfall=5.12"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 12HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.04 hrs, 1801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=119,995 sf 0.00% Impervious Runoff Depth=1.81"Subcatchment DA1: DA1 Flow Length=516' Tc=12.5 min CN=66 Runoff=4.50 cfs 18,098 cf Inflow=4.50 cfs 18,098 cfLink TSD: Total Site Discharge Primary=4.50 cfs 18,098 cf Total Runoff Area = 119,995 sf Runoff Volume = 18,098 cf Average Runoff Depth = 1.81" 100.00% Pervious = 119,995 sf 0.00% Impervious = 0 sf Type III 24-hr 10-Year Rainfall=5.12"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 13HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA1: DA1 Runoff = 4.50 cfs @ 12.18 hrs, Volume= 18,098 cf, Depth= 1.81" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 119,995 66 Woods, Poor, HSG B 119,995 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 100 0.2220 0.21 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 4.6 416 0.0910 1.51 Shallow Concentrated Flow, SHALLOW Woodland Kv= 5.0 fps 12.5 516 Total Type III 24-hr 10-Year Rainfall=5.12"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 14HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,995 sf, 0.00% Impervious, Inflow Depth = 1.81" for 10-Year event Inflow = 4.50 cfs @ 12.18 hrs, Volume= 18,098 cf Primary = 4.50 cfs @ 12.18 hrs, Volume= 18,098 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 25-Year Rainfall=6.16"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 15HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.04 hrs, 1801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=119,995 sf 0.00% Impervious Runoff Depth=2.56"Subcatchment DA1: DA1 Flow Length=516' Tc=12.5 min CN=66 Runoff=6.54 cfs 25,593 cf Inflow=6.54 cfs 25,593 cfLink TSD: Total Site Discharge Primary=6.54 cfs 25,593 cf Total Runoff Area = 119,995 sf Runoff Volume = 25,593 cf Average Runoff Depth = 2.56" 100.00% Pervious = 119,995 sf 0.00% Impervious = 0 sf Type III 24-hr 25-Year Rainfall=6.16"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 16HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA1: DA1 Runoff = 6.54 cfs @ 12.18 hrs, Volume= 25,593 cf, Depth= 2.56" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 119,995 66 Woods, Poor, HSG B 119,995 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 100 0.2220 0.21 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 4.6 416 0.0910 1.51 Shallow Concentrated Flow, SHALLOW Woodland Kv= 5.0 fps 12.5 516 Total Type III 24-hr 25-Year Rainfall=6.16"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 17HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,995 sf, 0.00% Impervious, Inflow Depth = 2.56" for 25-Year event Inflow = 6.54 cfs @ 12.18 hrs, Volume= 25,593 cf Primary = 6.54 cfs @ 12.18 hrs, Volume= 25,593 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 100-Year Rainfall=7.76"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 18HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.04 hrs, 1801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=119,995 sf 0.00% Impervious Runoff Depth=3.81"Subcatchment DA1: DA1 Flow Length=516' Tc=12.5 min CN=66 Runoff=9.89 cfs 38,116 cf Inflow=9.89 cfs 38,116 cfLink TSD: Total Site Discharge Primary=9.89 cfs 38,116 cf Total Runoff Area = 119,995 sf Runoff Volume = 38,116 cf Average Runoff Depth = 3.81" 100.00% Pervious = 119,995 sf 0.00% Impervious = 0 sf Type III 24-hr 100-Year Rainfall=7.76"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 19HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA1: DA1 Runoff = 9.89 cfs @ 12.18 hrs, Volume= 38,116 cf, Depth= 3.81" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 119,995 66 Woods, Poor, HSG B 119,995 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 100 0.2220 0.21 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 4.6 416 0.0910 1.51 Shallow Concentrated Flow, SHALLOW Woodland Kv= 5.0 fps 12.5 516 Total Type III 24-hr 100-Year Rainfall=7.76"pre development Printed 11/8/2022Prepared by HH Engineering Assoc Page 20HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,995 sf, 0.00% Impervious, Inflow Depth = 3.81" for 100-Year event Inflow = 9.89 cfs @ 12.18 hrs, Volume= 38,116 cf Primary = 9.89 cfs @ 12.18 hrs, Volume= 38,116 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.04 hrs Appendix D – Post-Development HydroCAD Report DA 1A DA 1A DA 1B DA 1B DA 1C DA 1C DA 1D DA 1D DA 1E DA 1E RG-A Rain Garden A RG-B Rain Garden B SWB Stormtech MC 3500 (SWM-B) TSD Total Site Discharge Routing Diagram for post developmentPrepared by HH Engineering Assoc, Printed 11/8/2022 HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 2HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Rainfall Events Listing (selected events) Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 WQV Type III 24-hr Default 24.00 1 1.00 2 2 2-Year Type III 24-hr Default 24.00 1 3.45 2 3 10-Year Type III 24-hr Default 24.00 1 5.12 2 4 25-Year Type III 24-hr Default 24.00 1 6.16 2 5 100-Year Type III 24-hr Default 24.00 1 7.76 2 post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 3HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (sq-ft) CN Description (subcatchment-numbers) 21,316 69 50-75% Grass cover, Fair, HSG B (DA 1A, DA 1D, DA 1E) 23,674 67 Brush, Poor, HSG B (DA 1C) 21,374 98 Paved parking, HSG B (DA 1A, DA 1B, DA 1C, DA 1D) 4,000 98 Roofs, HSG B (DA 1B) 49,604 66 Woods, Poor, HSG B (DA 1A, DA 1C, DA 1E) 119,968 73 TOTAL AREA post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 4HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (sq-ft) Soil Group Subcatchment Numbers 0 HSG A 119,968 HSG B DA 1A, DA 1B, DA 1C, DA 1D, DA 1E 0 HSG C 0 HSG D 0 Other 119,968 TOTAL AREA post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 5HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (sq-ft) HSG-B (sq-ft) HSG-C (sq-ft) HSG-D (sq-ft) Other (sq-ft) Total (sq-ft) Ground Cover Subcatchment Numbers 0 21,316 0 0 0 21,316 50-75% Grass cover, Fair 0 23,674 0 0 0 23,674 Brush, Poor 0 21,374 0 0 0 21,374 Paved parking 0 4,000 0 0 0 4,000 Roofs 0 49,604 0 0 0 49,604 Woods, Poor 0 119,968 0 0 0 119,968 TOTAL AREA post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 6HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Width (inches) Diam/Height (inches) Inside-Fill (inches) 1 SWB 175.65 166.00 45.0 0.2144 0.012 0.0 15.0 0.0 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 7HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=16,145 sf 22.38% Impervious Runoff Depth=0.02"Subcatchment DA 1A: DA 1A Tc=10.0 min CN=74 Runoff=0.00 cfs 31 cf Runoff Area=16,665 sf 100.00% Impervious Runoff Depth=0.79"Subcatchment DA 1B: DA 1B Tc=5.0 min CN=98 Runoff=0.35 cfs 1,098 cf Runoff Area=47,379 sf 1.50% Impervious Runoff Depth=0.00"Subcatchment DA 1C: DA 1C Tc=10.0 min CN=67 Runoff=0.00 cfs 0 cf Runoff Area=10,641 sf 41.23% Impervious Runoff Depth=0.10"Subcatchment DA 1D: DA 1D Tc=5.0 min CN=81 Runoff=0.01 cfs 87 cf Runoff Area=29,138 sf 0.00% Impervious Runoff Depth=0.00"Subcatchment DA 1E: DA 1E Flow Length=446' Tc=10.7 min CN=67 Runoff=0.00 cfs 0 cf Peak Elev=183.00' Storage=0 cf Inflow=0.00 cfs 31 cfPond RG-A: Rain Garden A Discarded=0.00 cfs 31 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 31 cf Peak Elev=156.01' Storage=4 cf Inflow=0.01 cfs 87 cfPond RG-B: Rain Garden B Discarded=0.01 cfs 87 cf Primary=0.00 cfs 0 cf Outflow=0.01 cfs 87 cf Peak Elev=175.97' Storage=224 cf Inflow=0.35 cfs 1,098 cfPond SWB: Stormtech MC 3500 (SWM-B) Discarded=0.10 cfs 1,098 cf Primary=0.00 cfs 0 cf Outflow=0.10 cfs 1,098 cf Inflow=0.00 cfs 0 cfLink TSD: Total Site Discharge Primary=0.00 cfs 0 cf Total Runoff Area = 119,968 sf Runoff Volume = 1,217 cf Average Runoff Depth = 0.12" 78.85% Pervious = 94,594 sf 21.15% Impervious = 25,374 sf Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 8HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1A: DA 1A Runoff = 0.00 cfs @ 14.84 hrs, Volume= 31 cf, Depth= 0.02" Routed to Pond RG-A : Rain Garden A Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 6,492 66 Woods, Poor, HSG B 6,040 69 50-75% Grass cover, Fair, HSG B 3,613 98 Paved parking, HSG B 16,145 74 Weighted Average 12,532 77.62% Pervious Area 3,613 22.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 9HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1B: DA 1B Runoff = 0.35 cfs @ 12.07 hrs, Volume= 1,098 cf, Depth= 0.79" Routed to Pond SWB : Stormtech MC 3500 (SWM-B) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 4,000 98 Roofs, HSG B 12,665 98 Paved parking, HSG B 16,665 98 Weighted Average 16,665 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 10HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1C: DA 1C Runoff = 0.00 cfs @ 24.03 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 709 98 Paved parking, HSG B 22,996 66 Woods, Poor, HSG B 23,674 67 Brush, Poor, HSG B 47,379 67 Weighted Average 46,670 98.50% Pervious Area 709 1.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 11HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1D: DA 1D Runoff = 0.01 cfs @ 12.14 hrs, Volume= 87 cf, Depth= 0.10" Routed to Pond RG-B : Rain Garden B Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 4,387 98 Paved parking, HSG B 6,254 69 50-75% Grass cover, Fair, HSG B 10,641 81 Weighted Average 6,254 58.77% Pervious Area 4,387 41.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 12HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1E: DA 1E Runoff = 0.00 cfs @ 24.03 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr WQV Rainfall=1.00" Area (sf) CN Description 20,116 66 Woods, Poor, HSG B 9,022 69 50-75% Grass cover, Fair, HSG B 29,138 67 Weighted Average 29,138 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.7 100 0.2400 0.22 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 3.0 346 0.0750 1.92 Shallow Concentrated Flow, SHALLOW Short Grass Pasture Kv= 7.0 fps 10.7 446 Total Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 13HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-A: Rain Garden A Inflow Area = 16,145 sf, 22.38% Impervious, Inflow Depth = 0.02" for WQV event Inflow = 0.00 cfs @ 14.84 hrs, Volume= 31 cf Outflow = 0.00 cfs @ 14.95 hrs, Volume= 31 cf, Atten= 0%, Lag= 6.3 min Discarded = 0.00 cfs @ 14.95 hrs, Volume= 31 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 183.00' @ 14.95 hrs Surf.Area= 144 sf Storage= 0 cf Plug-Flow detention time= 6.7 min calculated for 31 cf (100% of inflow) Center-of-Mass det. time= 6.7 min ( 1,069.5 - 1,062.8 ) Volume Invert Avail.Storage Storage Description #1 183.00' 1,404 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 183.00 143 0 0 184.00 501 322 322 185.00 1,011 756 1,078 185.30 1,164 326 1,404 Device Routing Invert Outlet Devices #1 Primary 185.00'15.0' long x 3.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.41 2.56 2.69 2.67 2.66 2.66 2.65 2.67 2.67 2.70 2.77 2.83 2.87 2.93 3.10 3.19 3.32 #2 Discarded 183.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 14.95 hrs HW=183.00' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=183.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 14HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.00 0.00 0.00 0.00 183.01 0.01 0.01 0.00 183.02 0.01 0.01 0.00 183.03 0.01 0.01 0.00 183.04 0.01 0.01 0.00 183.05 0.01 0.01 0.00 183.06 0.01 0.01 0.00 183.07 0.01 0.01 0.00 183.08 0.01 0.01 0.00 183.09 0.01 0.01 0.00 183.10 0.01 0.01 0.00 183.11 0.01 0.01 0.00 183.12 0.01 0.01 0.00 183.13 0.01 0.01 0.00 183.14 0.01 0.01 0.00 183.15 0.01 0.01 0.00 183.16 0.01 0.01 0.00 183.17 0.01 0.01 0.00 183.18 0.01 0.01 0.00 183.19 0.01 0.01 0.00 183.20 0.01 0.01 0.00 183.21 0.01 0.01 0.00 183.22 0.01 0.01 0.00 183.23 0.01 0.01 0.00 183.24 0.01 0.01 0.00 183.25 0.01 0.01 0.00 183.26 0.01 0.01 0.00 183.27 0.01 0.01 0.00 183.28 0.01 0.01 0.00 183.29 0.01 0.01 0.00 183.30 0.01 0.01 0.00 183.31 0.01 0.01 0.00 183.32 0.01 0.01 0.00 183.33 0.01 0.01 0.00 183.34 0.01 0.01 0.00 183.35 0.01 0.01 0.00 183.36 0.02 0.02 0.00 183.37 0.02 0.02 0.00 183.38 0.02 0.02 0.00 183.39 0.02 0.02 0.00 183.40 0.02 0.02 0.00 183.41 0.02 0.02 0.00 183.42 0.02 0.02 0.00 183.43 0.02 0.02 0.00 183.44 0.02 0.02 0.00 183.45 0.02 0.02 0.00 183.46 0.02 0.02 0.00 183.47 0.02 0.02 0.00 183.48 0.02 0.02 0.00 183.49 0.02 0.02 0.00 183.50 0.02 0.02 0.00 183.51 0.02 0.02 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.52 0.02 0.02 0.00 183.53 0.02 0.02 0.00 183.54 0.02 0.02 0.00 183.55 0.02 0.02 0.00 183.56 0.02 0.02 0.00 183.57 0.02 0.02 0.00 183.58 0.02 0.02 0.00 183.59 0.02 0.02 0.00 183.60 0.02 0.02 0.00 183.61 0.02 0.02 0.00 183.62 0.02 0.02 0.00 183.63 0.02 0.02 0.00 183.64 0.02 0.02 0.00 183.65 0.02 0.02 0.00 183.66 0.02 0.02 0.00 183.67 0.02 0.02 0.00 183.68 0.02 0.02 0.00 183.69 0.02 0.02 0.00 183.70 0.02 0.02 0.00 183.71 0.02 0.02 0.00 183.72 0.02 0.02 0.00 183.73 0.02 0.02 0.00 183.74 0.02 0.02 0.00 183.75 0.02 0.02 0.00 183.76 0.02 0.02 0.00 183.77 0.02 0.02 0.00 183.78 0.02 0.02 0.00 183.79 0.02 0.02 0.00 183.80 0.02 0.02 0.00 183.81 0.02 0.02 0.00 183.82 0.02 0.02 0.00 183.83 0.02 0.02 0.00 183.84 0.02 0.02 0.00 183.85 0.02 0.02 0.00 183.86 0.03 0.03 0.00 183.87 0.03 0.03 0.00 183.88 0.03 0.03 0.00 183.89 0.03 0.03 0.00 183.90 0.03 0.03 0.00 183.91 0.03 0.03 0.00 183.92 0.03 0.03 0.00 183.93 0.03 0.03 0.00 183.94 0.03 0.03 0.00 183.95 0.03 0.03 0.00 183.96 0.03 0.03 0.00 183.97 0.03 0.03 0.00 183.98 0.03 0.03 0.00 183.99 0.03 0.03 0.00 184.00 0.03 0.03 0.00 184.01 0.03 0.03 0.00 184.02 0.03 0.03 0.00 184.03 0.03 0.03 0.00 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 15HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.04 0.03 0.03 0.00 184.05 0.03 0.03 0.00 184.06 0.03 0.03 0.00 184.07 0.03 0.03 0.00 184.08 0.03 0.03 0.00 184.09 0.03 0.03 0.00 184.10 0.03 0.03 0.00 184.11 0.03 0.03 0.00 184.12 0.03 0.03 0.00 184.13 0.03 0.03 0.00 184.14 0.03 0.03 0.00 184.15 0.03 0.03 0.00 184.16 0.03 0.03 0.00 184.17 0.03 0.03 0.00 184.18 0.03 0.03 0.00 184.19 0.03 0.03 0.00 184.20 0.03 0.03 0.00 184.21 0.03 0.03 0.00 184.22 0.03 0.03 0.00 184.23 0.03 0.03 0.00 184.24 0.03 0.03 0.00 184.25 0.03 0.03 0.00 184.26 0.04 0.04 0.00 184.27 0.04 0.04 0.00 184.28 0.04 0.04 0.00 184.29 0.04 0.04 0.00 184.30 0.04 0.04 0.00 184.31 0.04 0.04 0.00 184.32 0.04 0.04 0.00 184.33 0.04 0.04 0.00 184.34 0.04 0.04 0.00 184.35 0.04 0.04 0.00 184.36 0.04 0.04 0.00 184.37 0.04 0.04 0.00 184.38 0.04 0.04 0.00 184.39 0.04 0.04 0.00 184.40 0.04 0.04 0.00 184.41 0.04 0.04 0.00 184.42 0.04 0.04 0.00 184.43 0.04 0.04 0.00 184.44 0.04 0.04 0.00 184.45 0.04 0.04 0.00 184.46 0.04 0.04 0.00 184.47 0.04 0.04 0.00 184.48 0.04 0.04 0.00 184.49 0.04 0.04 0.00 184.50 0.04 0.04 0.00 184.51 0.04 0.04 0.00 184.52 0.04 0.04 0.00 184.53 0.04 0.04 0.00 184.54 0.04 0.04 0.00 184.55 0.04 0.04 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.56 0.04 0.04 0.00 184.57 0.04 0.04 0.00 184.58 0.04 0.04 0.00 184.59 0.04 0.04 0.00 184.60 0.04 0.04 0.00 184.61 0.05 0.05 0.00 184.62 0.05 0.05 0.00 184.63 0.05 0.05 0.00 184.64 0.05 0.05 0.00 184.65 0.05 0.05 0.00 184.66 0.05 0.05 0.00 184.67 0.05 0.05 0.00 184.68 0.05 0.05 0.00 184.69 0.05 0.05 0.00 184.70 0.05 0.05 0.00 184.71 0.05 0.05 0.00 184.72 0.05 0.05 0.00 184.73 0.05 0.05 0.00 184.74 0.05 0.05 0.00 184.75 0.05 0.05 0.00 184.76 0.05 0.05 0.00 184.77 0.05 0.05 0.00 184.78 0.05 0.05 0.00 184.79 0.05 0.05 0.00 184.80 0.05 0.05 0.00 184.81 0.05 0.05 0.00 184.82 0.05 0.05 0.00 184.83 0.05 0.05 0.00 184.84 0.05 0.05 0.00 184.85 0.05 0.05 0.00 184.86 0.05 0.05 0.00 184.87 0.05 0.05 0.00 184.88 0.05 0.05 0.00 184.89 0.05 0.05 0.00 184.90 0.05 0.05 0.00 184.91 0.05 0.05 0.00 184.92 0.05 0.05 0.00 184.93 0.05 0.05 0.00 184.94 0.05 0.05 0.00 184.95 0.05 0.05 0.00 184.96 0.06 0.06 0.00 184.97 0.06 0.06 0.00 184.98 0.06 0.06 0.00 184.99 0.06 0.06 0.00 185.00 0.06 0.06 0.00 185.01 0.09 0.06 0.04 185.02 0.16 0.06 0.10 185.03 0.24 0.06 0.19 185.04 0.35 0.06 0.29 185.05 0.46 0.06 0.40 185.06 0.59 0.06 0.53 185.07 0.73 0.06 0.67 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 16HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 185.08 0.88 0.06 0.82 185.09 1.03 0.06 0.98 185.10 1.20 0.06 1.14 185.11 1.38 0.06 1.32 185.12 1.56 0.06 1.50 185.13 1.75 0.06 1.69 185.14 1.95 0.06 1.89 185.15 2.16 0.06 2.10 185.16 2.37 0.06 2.31 185.17 2.59 0.06 2.53 185.18 2.82 0.06 2.76 185.19 3.06 0.06 2.99 185.20 3.30 0.06 3.23 185.21 3.55 0.06 3.49 185.22 3.82 0.06 3.75 185.23 4.09 0.06 4.02 185.24 4.37 0.06 4.30 185.25 4.65 0.06 4.59 185.26 4.95 0.06 4.88 185.27 5.25 0.06 5.18 185.28 5.55 0.06 5.49 185.29 5.87 0.06 5.80 185.30 6.19 0.06 6.12 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 17HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.00 143 0 183.01 147 1 183.02 150 3 183.03 154 4 183.04 157 6 183.05 161 8 183.06 164 9 183.07 168 11 183.08 172 13 183.09 175 14 183.10 179 16 183.11 182 18 183.12 186 20 183.13 190 22 183.14 193 24 183.15 197 25 183.16 200 27 183.17 204 29 183.18 207 32 183.19 211 34 183.20 215 36 183.21 218 38 183.22 222 40 183.23 225 42 183.24 229 45 183.25 233 47 183.26 236 49 183.27 240 52 183.28 243 54 183.29 247 57 183.30 250 59 183.31 254 62 183.32 258 64 183.33 261 67 183.34 265 69 183.35 268 72 183.36 272 75 183.37 275 77 183.38 279 80 183.39 283 83 183.40 286 86 183.41 290 89 183.42 293 92 183.43 297 95 183.44 301 98 183.45 304 101 183.46 308 104 183.47 311 107 183.48 315 110 183.49 318 113 183.50 322 116 183.51 326 119 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.52 329 123 183.53 333 126 183.54 336 129 183.55 340 133 183.56 343 136 183.57 347 140 183.58 351 143 183.59 354 147 183.60 358 150 183.61 361 154 183.62 365 157 183.63 369 161 183.64 372 165 183.65 376 169 183.66 379 172 183.67 383 176 183.68 386 180 183.69 390 184 183.70 394 188 183.71 397 192 183.72 401 196 183.73 404 200 183.74 408 204 183.75 412 208 183.76 415 212 183.77 419 216 183.78 422 220 183.79 426 225 183.80 429 229 183.81 433 233 183.82 437 238 183.83 440 242 183.84 444 246 183.85 447 251 183.86 451 255 183.87 454 260 183.88 458 264 183.89 462 269 183.90 465 274 183.91 469 278 183.92 472 283 183.93 476 288 183.94 480 293 183.95 483 297 183.96 487 302 183.97 490 307 183.98 494 312 183.99 497 317 184.00 501 322 184.01 506 327 184.02 511 332 184.03 516 337 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 18HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.04 521 342 184.05 527 348 184.06 532 353 184.07 537 358 184.08 542 364 184.09 547 369 184.10 552 375 184.11 557 380 184.12 562 386 184.13 567 391 184.14 572 397 184.15 578 403 184.16 583 409 184.17 588 415 184.18 593 420 184.19 598 426 184.20 603 432 184.21 608 438 184.22 613 445 184.23 618 451 184.24 623 457 184.25 629 463 184.26 634 469 184.27 639 476 184.28 644 482 184.29 649 489 184.30 654 495 184.31 659 502 184.32 664 508 184.33 669 515 184.34 674 522 184.35 679 529 184.36 685 535 184.37 690 542 184.38 695 549 184.39 700 556 184.40 705 563 184.41 710 570 184.42 715 577 184.43 720 585 184.44 725 592 184.45 730 599 184.46 736 606 184.47 741 614 184.48 746 621 184.49 751 629 184.50 756 636 184.51 761 644 184.52 766 651 184.53 771 659 184.54 776 667 184.55 782 675 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.56 787 683 184.57 792 690 184.58 797 698 184.59 802 706 184.60 807 714 184.61 812 722 184.62 817 731 184.63 822 739 184.64 827 747 184.65 833 755 184.66 838 764 184.67 843 772 184.68 848 781 184.69 853 789 184.70 858 798 184.71 863 806 184.72 868 815 184.73 873 824 184.74 878 832 184.75 884 841 184.76 889 850 184.77 894 859 184.78 899 868 184.79 904 877 184.80 909 886 184.81 914 895 184.82 919 904 184.83 924 913 184.84 929 923 184.85 934 932 184.86 940 941 184.87 945 951 184.88 950 960 184.89 955 970 184.90 960 979 184.91 965 989 184.92 970 999 184.93 975 1,008 184.94 980 1,018 184.95 985 1,028 184.96 991 1,038 184.97 996 1,048 184.98 1,001 1,058 184.99 1,006 1,068 185.00 1,011 1,078 185.01 1,016 1,088 185.02 1,021 1,098 185.03 1,026 1,109 185.04 1,031 1,119 185.05 1,037 1,129 185.06 1,042 1,140 185.07 1,047 1,150 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 19HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 185.08 1,052 1,161 185.09 1,057 1,171 185.10 1,062 1,182 185.11 1,067 1,192 185.12 1,072 1,203 185.13 1,077 1,214 185.14 1,082 1,225 185.15 1,088 1,235 185.16 1,093 1,246 185.17 1,098 1,257 185.18 1,103 1,268 185.19 1,108 1,279 185.20 1,113 1,290 185.21 1,118 1,302 185.22 1,123 1,313 185.23 1,128 1,324 185.24 1,133 1,335 185.25 1,138 1,347 185.26 1,144 1,358 185.27 1,149 1,370 185.28 1,154 1,381 185.29 1,159 1,393 185.30 1,164 1,404 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 20HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-B: Rain Garden B Inflow Area = 10,641 sf, 41.23% Impervious, Inflow Depth = 0.10" for WQV event Inflow = 0.01 cfs @ 12.14 hrs, Volume= 87 cf Outflow = 0.01 cfs @ 12.38 hrs, Volume= 87 cf, Atten= 11%, Lag= 14.3 min Discarded = 0.01 cfs @ 12.38 hrs, Volume= 87 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 156.01' @ 12.38 hrs Surf.Area= 440 sf Storage= 4 cf Plug-Flow detention time= 6.8 min calculated for 87 cf (100% of inflow) Center-of-Mass det. time= 6.9 min ( 944.8 - 937.9 ) Volume Invert Avail.Storage Storage Description #1 156.00' 1,767 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 156.00 437 0 0 157.00 704 571 571 158.00 1,037 871 1,441 158.30 1,135 326 1,767 Device Routing Invert Outlet Devices #1 Primary 158.00'15.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 156.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.38 hrs HW=156.01' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=156.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 21HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.00 0.00 0.00 0.00 156.01 0.02 0.02 0.00 156.02 0.02 0.02 0.00 156.03 0.02 0.02 0.00 156.04 0.02 0.02 0.00 156.05 0.03 0.03 0.00 156.06 0.03 0.03 0.00 156.07 0.03 0.03 0.00 156.08 0.03 0.03 0.00 156.09 0.03 0.03 0.00 156.10 0.03 0.03 0.00 156.11 0.03 0.03 0.00 156.12 0.03 0.03 0.00 156.13 0.03 0.03 0.00 156.14 0.03 0.03 0.00 156.15 0.03 0.03 0.00 156.16 0.03 0.03 0.00 156.17 0.03 0.03 0.00 156.18 0.03 0.03 0.00 156.19 0.03 0.03 0.00 156.20 0.03 0.03 0.00 156.21 0.03 0.03 0.00 156.22 0.03 0.03 0.00 156.23 0.03 0.03 0.00 156.24 0.03 0.03 0.00 156.25 0.03 0.03 0.00 156.26 0.03 0.03 0.00 156.27 0.03 0.03 0.00 156.28 0.03 0.03 0.00 156.29 0.03 0.03 0.00 156.30 0.03 0.03 0.00 156.31 0.03 0.03 0.00 156.32 0.03 0.03 0.00 156.33 0.03 0.03 0.00 156.34 0.03 0.03 0.00 156.35 0.03 0.03 0.00 156.36 0.03 0.03 0.00 156.37 0.03 0.03 0.00 156.38 0.03 0.03 0.00 156.39 0.03 0.03 0.00 156.40 0.03 0.03 0.00 156.41 0.03 0.03 0.00 156.42 0.03 0.03 0.00 156.43 0.03 0.03 0.00 156.44 0.03 0.03 0.00 156.45 0.03 0.03 0.00 156.46 0.03 0.03 0.00 156.47 0.03 0.03 0.00 156.48 0.03 0.03 0.00 156.49 0.03 0.03 0.00 156.50 0.03 0.03 0.00 156.51 0.03 0.03 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.52 0.03 0.03 0.00 156.53 0.03 0.03 0.00 156.54 0.03 0.03 0.00 156.55 0.03 0.03 0.00 156.56 0.03 0.03 0.00 156.57 0.03 0.03 0.00 156.58 0.03 0.03 0.00 156.59 0.03 0.03 0.00 156.60 0.03 0.03 0.00 156.61 0.03 0.03 0.00 156.62 0.03 0.03 0.00 156.63 0.03 0.03 0.00 156.64 0.03 0.03 0.00 156.65 0.03 0.03 0.00 156.66 0.03 0.03 0.00 156.67 0.03 0.03 0.00 156.68 0.03 0.03 0.00 156.69 0.03 0.03 0.00 156.70 0.03 0.03 0.00 156.71 0.03 0.03 0.00 156.72 0.03 0.03 0.00 156.73 0.04 0.04 0.00 156.74 0.04 0.04 0.00 156.75 0.04 0.04 0.00 156.76 0.04 0.04 0.00 156.77 0.04 0.04 0.00 156.78 0.04 0.04 0.00 156.79 0.04 0.04 0.00 156.80 0.04 0.04 0.00 156.81 0.04 0.04 0.00 156.82 0.04 0.04 0.00 156.83 0.04 0.04 0.00 156.84 0.04 0.04 0.00 156.85 0.04 0.04 0.00 156.86 0.04 0.04 0.00 156.87 0.04 0.04 0.00 156.88 0.04 0.04 0.00 156.89 0.04 0.04 0.00 156.90 0.04 0.04 0.00 156.91 0.04 0.04 0.00 156.92 0.04 0.04 0.00 156.93 0.04 0.04 0.00 156.94 0.04 0.04 0.00 156.95 0.04 0.04 0.00 156.96 0.04 0.04 0.00 156.97 0.04 0.04 0.00 156.98 0.04 0.04 0.00 156.99 0.04 0.04 0.00 157.00 0.04 0.04 0.00 157.01 0.04 0.04 0.00 157.02 0.04 0.04 0.00 157.03 0.04 0.04 0.00 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 22HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.04 0.04 0.04 0.00 157.05 0.04 0.04 0.00 157.06 0.04 0.04 0.00 157.07 0.04 0.04 0.00 157.08 0.04 0.04 0.00 157.09 0.04 0.04 0.00 157.10 0.04 0.04 0.00 157.11 0.04 0.04 0.00 157.12 0.04 0.04 0.00 157.13 0.04 0.04 0.00 157.14 0.04 0.04 0.00 157.15 0.04 0.04 0.00 157.16 0.04 0.04 0.00 157.17 0.04 0.04 0.00 157.18 0.04 0.04 0.00 157.19 0.04 0.04 0.00 157.20 0.04 0.04 0.00 157.21 0.04 0.04 0.00 157.22 0.04 0.04 0.00 157.23 0.04 0.04 0.00 157.24 0.04 0.04 0.00 157.25 0.04 0.04 0.00 157.26 0.04 0.04 0.00 157.27 0.04 0.04 0.00 157.28 0.04 0.04 0.00 157.29 0.04 0.04 0.00 157.30 0.04 0.04 0.00 157.31 0.04 0.04 0.00 157.32 0.05 0.05 0.00 157.33 0.05 0.05 0.00 157.34 0.05 0.05 0.00 157.35 0.05 0.05 0.00 157.36 0.05 0.05 0.00 157.37 0.05 0.05 0.00 157.38 0.05 0.05 0.00 157.39 0.05 0.05 0.00 157.40 0.05 0.05 0.00 157.41 0.05 0.05 0.00 157.42 0.05 0.05 0.00 157.43 0.05 0.05 0.00 157.44 0.05 0.05 0.00 157.45 0.05 0.05 0.00 157.46 0.05 0.05 0.00 157.47 0.05 0.05 0.00 157.48 0.05 0.05 0.00 157.49 0.05 0.05 0.00 157.50 0.05 0.05 0.00 157.51 0.05 0.05 0.00 157.52 0.05 0.05 0.00 157.53 0.05 0.05 0.00 157.54 0.05 0.05 0.00 157.55 0.05 0.05 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.56 0.05 0.05 0.00 157.57 0.05 0.05 0.00 157.58 0.05 0.05 0.00 157.59 0.05 0.05 0.00 157.60 0.05 0.05 0.00 157.61 0.05 0.05 0.00 157.62 0.05 0.05 0.00 157.63 0.05 0.05 0.00 157.64 0.05 0.05 0.00 157.65 0.05 0.05 0.00 157.66 0.05 0.05 0.00 157.67 0.05 0.05 0.00 157.68 0.05 0.05 0.00 157.69 0.05 0.05 0.00 157.70 0.05 0.05 0.00 157.71 0.05 0.05 0.00 157.72 0.05 0.05 0.00 157.73 0.05 0.05 0.00 157.74 0.05 0.05 0.00 157.75 0.05 0.05 0.00 157.76 0.05 0.05 0.00 157.77 0.05 0.05 0.00 157.78 0.05 0.05 0.00 157.79 0.05 0.05 0.00 157.80 0.05 0.05 0.00 157.81 0.05 0.05 0.00 157.82 0.05 0.05 0.00 157.83 0.05 0.05 0.00 157.84 0.05 0.05 0.00 157.85 0.05 0.05 0.00 157.86 0.06 0.06 0.00 157.87 0.06 0.06 0.00 157.88 0.06 0.06 0.00 157.89 0.06 0.06 0.00 157.90 0.06 0.06 0.00 157.91 0.06 0.06 0.00 157.92 0.06 0.06 0.00 157.93 0.06 0.06 0.00 157.94 0.06 0.06 0.00 157.95 0.06 0.06 0.00 157.96 0.06 0.06 0.00 157.97 0.06 0.06 0.00 157.98 0.06 0.06 0.00 157.99 0.06 0.06 0.00 158.00 0.06 0.06 0.00 158.01 0.09 0.06 0.04 158.02 0.16 0.06 0.10 158.03 0.24 0.06 0.19 158.04 0.34 0.06 0.29 158.05 0.46 0.06 0.40 158.06 0.58 0.06 0.52 158.07 0.72 0.06 0.66 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 23HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 158.08 0.87 0.06 0.81 158.09 1.02 0.06 0.96 158.10 1.19 0.06 1.13 158.11 1.36 0.06 1.30 158.12 1.54 0.06 1.48 158.13 1.73 0.06 1.67 158.14 1.93 0.06 1.87 158.15 2.13 0.06 2.07 158.16 2.35 0.06 2.28 158.17 2.56 0.06 2.50 158.18 2.79 0.06 2.73 158.19 3.02 0.06 2.96 158.20 3.25 0.06 3.19 158.21 3.51 0.06 3.45 158.22 3.77 0.06 3.71 158.23 4.04 0.06 3.98 158.24 4.32 0.06 4.25 158.25 4.60 0.06 4.54 158.26 4.89 0.06 4.83 158.27 5.19 0.06 5.13 158.28 5.49 0.06 5.43 158.29 5.81 0.06 5.74 158.30 6.13 0.06 6.06 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 24HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.00 437 0 156.01 440 4 156.02 442 9 156.03 445 13 156.04 448 18 156.05 450 22 156.06 453 27 156.07 456 31 156.08 458 36 156.09 461 40 156.10 464 45 156.11 466 50 156.12 469 54 156.13 472 59 156.14 474 64 156.15 477 69 156.16 480 73 156.17 482 78 156.18 485 83 156.19 488 88 156.20 490 93 156.21 493 98 156.22 496 103 156.23 498 108 156.24 501 113 156.25 504 118 156.26 506 123 156.27 509 128 156.28 512 133 156.29 514 138 156.30 517 143 156.31 520 148 156.32 522 154 156.33 525 159 156.34 528 164 156.35 530 169 156.36 533 175 156.37 536 180 156.38 538 185 156.39 541 191 156.40 544 196 156.41 546 202 156.42 549 207 156.43 552 213 156.44 554 218 156.45 557 224 156.46 560 229 156.47 562 235 156.48 565 241 156.49 568 246 156.50 571 252 156.51 573 258 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.52 576 263 156.53 579 269 156.54 581 275 156.55 584 281 156.56 587 287 156.57 589 292 156.58 592 298 156.59 595 304 156.60 597 310 156.61 600 316 156.62 603 322 156.63 605 328 156.64 608 334 156.65 611 340 156.66 613 347 156.67 616 353 156.68 619 359 156.69 621 365 156.70 624 371 156.71 627 378 156.72 629 384 156.73 632 390 156.74 635 396 156.75 637 403 156.76 640 409 156.77 643 416 156.78 645 422 156.79 648 429 156.80 651 435 156.81 653 442 156.82 656 448 156.83 659 455 156.84 661 461 156.85 664 468 156.86 667 475 156.87 669 481 156.88 672 488 156.89 675 495 156.90 677 501 156.91 680 508 156.92 683 515 156.93 685 522 156.94 688 529 156.95 691 536 156.96 693 543 156.97 696 550 156.98 699 556 156.99 701 563 157.00 704 571 157.01 707 578 157.02 711 585 157.03 714 592 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 25HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.04 717 599 157.05 721 606 157.06 724 613 157.07 727 621 157.08 731 628 157.09 734 635 157.10 737 643 157.11 741 650 157.12 744 657 157.13 747 665 157.14 751 672 157.15 754 680 157.16 757 687 157.17 761 695 157.18 764 703 157.19 767 710 157.20 771 718 157.21 774 726 157.22 777 733 157.23 781 741 157.24 784 749 157.25 787 757 157.26 791 765 157.27 794 773 157.28 797 781 157.29 801 789 157.30 804 797 157.31 807 805 157.32 811 813 157.33 814 821 157.34 817 829 157.35 821 837 157.36 824 846 157.37 827 854 157.38 831 862 157.39 834 870 157.40 837 879 157.41 841 887 157.42 844 896 157.43 847 904 157.44 851 912 157.45 854 921 157.46 857 930 157.47 861 938 157.48 864 947 157.49 867 955 157.50 871 964 157.51 874 973 157.52 877 982 157.53 880 990 157.54 884 999 157.55 887 1,008 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.56 890 1,017 157.57 894 1,026 157.58 897 1,035 157.59 900 1,044 157.60 904 1,053 157.61 907 1,062 157.62 910 1,071 157.63 914 1,080 157.64 917 1,089 157.65 920 1,098 157.66 924 1,108 157.67 927 1,117 157.68 930 1,126 157.69 934 1,136 157.70 937 1,145 157.71 940 1,154 157.72 944 1,164 157.73 947 1,173 157.74 950 1,183 157.75 954 1,192 157.76 957 1,202 157.77 960 1,211 157.78 964 1,221 157.79 967 1,231 157.80 970 1,240 157.81 974 1,250 157.82 977 1,260 157.83 980 1,270 157.84 984 1,279 157.85 987 1,289 157.86 990 1,299 157.87 994 1,309 157.88 997 1,319 157.89 1,000 1,329 157.90 1,004 1,339 157.91 1,007 1,349 157.92 1,010 1,359 157.93 1,014 1,369 157.94 1,017 1,379 157.95 1,020 1,390 157.96 1,024 1,400 157.97 1,027 1,410 157.98 1,030 1,420 157.99 1,034 1,431 158.00 1,037 1,441 158.01 1,040 1,451 158.02 1,044 1,462 158.03 1,047 1,472 158.04 1,050 1,483 158.05 1,053 1,493 158.06 1,057 1,504 158.07 1,060 1,514 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 26HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 158.08 1,063 1,525 158.09 1,066 1,536 158.10 1,070 1,546 158.11 1,073 1,557 158.12 1,076 1,568 158.13 1,079 1,579 158.14 1,083 1,589 158.15 1,086 1,600 158.16 1,089 1,611 158.17 1,093 1,622 158.18 1,096 1,633 158.19 1,099 1,644 158.20 1,102 1,655 158.21 1,106 1,666 158.22 1,109 1,677 158.23 1,112 1,688 158.24 1,115 1,699 158.25 1,119 1,710 158.26 1,122 1,722 158.27 1,125 1,733 158.28 1,128 1,744 158.29 1,132 1,755 158.30 1,135 1,767 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 27HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond SWB: Stormtech MC 3500 (SWM-B) Inflow Area = 16,665 sf,100.00% Impervious, Inflow Depth = 0.79" for WQV event Inflow = 0.35 cfs @ 12.07 hrs, Volume= 1,098 cf Outflow = 0.10 cfs @ 11.90 hrs, Volume= 1,098 cf, Atten= 73%, Lag= 0.0 min Discarded = 0.10 cfs @ 11.90 hrs, Volume= 1,098 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 175.97' @ 12.41 hrs Surf.Area= 1,738 sf Storage= 224 cf Plug-Flow detention time= 15.1 min calculated for 1,098 cf (100% of inflow) Center-of-Mass det. time= 15.1 min ( 802.0 - 786.9 ) Volume Invert Avail.Storage Storage Description #1A 175.65' 2,580 cf 8.42'W x 206.46'L x 5.50'H Field A 9,557 cf Overall - 3,108 cf Embedded = 6,449 cf x 40.0% Voids #2A 176.40' 3,108 cf ADS_StormTech MC-3500 d +Cap x 28 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 5,688 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 175.65'15.0" Round Outlet Pipe L= 45.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 175.65' / 166.00' S= 0.2144 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf #2 Device 1 179.00'6.0" Vert. Low Flow Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 180.25'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 #4 Discarded 175.65'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 11.90 hrs HW=175.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=175.65' (Free Discharge) 1=Outlet Pipe ( Controls 0.00 cfs) 2=Low Flow Orifice ( Controls 0.00 cfs) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 28HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pond SWB: Stormtech MC 3500 (SWM-B) - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 28 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 204.46' Row Length +12.0" End Stone x 2 = 206.46' Base Length 1 Rows x 77.0" Wide + 12.0" Side Stone x 2 = 8.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 12.0" Stone Cover = 5.50' Field Height 28 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 1 Rows = 3,108.5 cf Chamber Storage 9,557.4 cf Field - 3,108.5 cf Chambers = 6,448.9 cf Stone x 40.0% Voids = 2,579.6 cf Stone Storage Chamber Storage + Stone Storage = 5,688.0 cf = 0.131 af Overall Storage Efficiency = 59.5% Overall System Size = 206.46' x 8.42' x 5.50' 28 Chambers 354.0 cy Field 238.8 cy Stone Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 29HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 175.65 0.00 0.00 0.00 175.66 0.10 0.10 0.00 175.67 0.10 0.10 0.00 175.68 0.10 0.10 0.00 175.69 0.10 0.10 0.00 175.70 0.10 0.10 0.00 175.71 0.10 0.10 0.00 175.72 0.10 0.10 0.00 175.73 0.10 0.10 0.00 175.74 0.10 0.10 0.00 175.75 0.10 0.10 0.00 175.76 0.10 0.10 0.00 175.77 0.10 0.10 0.00 175.78 0.10 0.10 0.00 175.79 0.10 0.10 0.00 175.80 0.10 0.10 0.00 175.81 0.10 0.10 0.00 175.82 0.10 0.10 0.00 175.83 0.10 0.10 0.00 175.84 0.10 0.10 0.00 175.85 0.10 0.10 0.00 175.86 0.10 0.10 0.00 175.87 0.10 0.10 0.00 175.88 0.10 0.10 0.00 175.89 0.10 0.10 0.00 175.90 0.10 0.10 0.00 175.91 0.10 0.10 0.00 175.92 0.10 0.10 0.00 175.93 0.10 0.10 0.00 175.94 0.10 0.10 0.00 175.95 0.10 0.10 0.00 175.96 0.10 0.10 0.00 175.97 0.10 0.10 0.00 175.98 0.10 0.10 0.00 175.99 0.10 0.10 0.00 176.00 0.10 0.10 0.00 176.01 0.10 0.10 0.00 176.02 0.10 0.10 0.00 176.03 0.10 0.10 0.00 176.04 0.10 0.10 0.00 176.05 0.10 0.10 0.00 176.06 0.10 0.10 0.00 176.07 0.10 0.10 0.00 176.08 0.10 0.10 0.00 176.09 0.10 0.10 0.00 176.10 0.10 0.10 0.00 176.11 0.10 0.10 0.00 176.12 0.10 0.10 0.00 176.13 0.10 0.10 0.00 176.14 0.10 0.10 0.00 176.15 0.10 0.10 0.00 176.16 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.17 0.10 0.10 0.00 176.18 0.10 0.10 0.00 176.19 0.10 0.10 0.00 176.20 0.10 0.10 0.00 176.21 0.10 0.10 0.00 176.22 0.10 0.10 0.00 176.23 0.10 0.10 0.00 176.24 0.10 0.10 0.00 176.25 0.10 0.10 0.00 176.26 0.10 0.10 0.00 176.27 0.10 0.10 0.00 176.28 0.10 0.10 0.00 176.29 0.10 0.10 0.00 176.30 0.10 0.10 0.00 176.31 0.10 0.10 0.00 176.32 0.10 0.10 0.00 176.33 0.10 0.10 0.00 176.34 0.10 0.10 0.00 176.35 0.10 0.10 0.00 176.36 0.10 0.10 0.00 176.37 0.10 0.10 0.00 176.38 0.10 0.10 0.00 176.39 0.10 0.10 0.00 176.40 0.10 0.10 0.00 176.41 0.10 0.10 0.00 176.42 0.10 0.10 0.00 176.43 0.10 0.10 0.00 176.44 0.10 0.10 0.00 176.45 0.10 0.10 0.00 176.46 0.10 0.10 0.00 176.47 0.10 0.10 0.00 176.48 0.10 0.10 0.00 176.49 0.10 0.10 0.00 176.50 0.10 0.10 0.00 176.51 0.10 0.10 0.00 176.52 0.10 0.10 0.00 176.53 0.10 0.10 0.00 176.54 0.10 0.10 0.00 176.55 0.10 0.10 0.00 176.56 0.10 0.10 0.00 176.57 0.10 0.10 0.00 176.58 0.10 0.10 0.00 176.59 0.10 0.10 0.00 176.60 0.10 0.10 0.00 176.61 0.10 0.10 0.00 176.62 0.10 0.10 0.00 176.63 0.10 0.10 0.00 176.64 0.10 0.10 0.00 176.65 0.10 0.10 0.00 176.66 0.10 0.10 0.00 176.67 0.10 0.10 0.00 176.68 0.10 0.10 0.00 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 30HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.69 0.10 0.10 0.00 176.70 0.10 0.10 0.00 176.71 0.10 0.10 0.00 176.72 0.10 0.10 0.00 176.73 0.10 0.10 0.00 176.74 0.10 0.10 0.00 176.75 0.10 0.10 0.00 176.76 0.10 0.10 0.00 176.77 0.10 0.10 0.00 176.78 0.10 0.10 0.00 176.79 0.10 0.10 0.00 176.80 0.10 0.10 0.00 176.81 0.10 0.10 0.00 176.82 0.10 0.10 0.00 176.83 0.10 0.10 0.00 176.84 0.10 0.10 0.00 176.85 0.10 0.10 0.00 176.86 0.10 0.10 0.00 176.87 0.10 0.10 0.00 176.88 0.10 0.10 0.00 176.89 0.10 0.10 0.00 176.90 0.10 0.10 0.00 176.91 0.10 0.10 0.00 176.92 0.10 0.10 0.00 176.93 0.10 0.10 0.00 176.94 0.10 0.10 0.00 176.95 0.10 0.10 0.00 176.96 0.10 0.10 0.00 176.97 0.10 0.10 0.00 176.98 0.10 0.10 0.00 176.99 0.10 0.10 0.00 177.00 0.10 0.10 0.00 177.01 0.10 0.10 0.00 177.02 0.10 0.10 0.00 177.03 0.10 0.10 0.00 177.04 0.10 0.10 0.00 177.05 0.10 0.10 0.00 177.06 0.10 0.10 0.00 177.07 0.10 0.10 0.00 177.08 0.10 0.10 0.00 177.09 0.10 0.10 0.00 177.10 0.10 0.10 0.00 177.11 0.10 0.10 0.00 177.12 0.10 0.10 0.00 177.13 0.10 0.10 0.00 177.14 0.10 0.10 0.00 177.15 0.10 0.10 0.00 177.16 0.10 0.10 0.00 177.17 0.10 0.10 0.00 177.18 0.10 0.10 0.00 177.19 0.10 0.10 0.00 177.20 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.21 0.10 0.10 0.00 177.22 0.10 0.10 0.00 177.23 0.10 0.10 0.00 177.24 0.10 0.10 0.00 177.25 0.10 0.10 0.00 177.26 0.10 0.10 0.00 177.27 0.10 0.10 0.00 177.28 0.10 0.10 0.00 177.29 0.10 0.10 0.00 177.30 0.10 0.10 0.00 177.31 0.10 0.10 0.00 177.32 0.10 0.10 0.00 177.33 0.10 0.10 0.00 177.34 0.10 0.10 0.00 177.35 0.10 0.10 0.00 177.36 0.10 0.10 0.00 177.37 0.10 0.10 0.00 177.38 0.10 0.10 0.00 177.39 0.10 0.10 0.00 177.40 0.10 0.10 0.00 177.41 0.10 0.10 0.00 177.42 0.10 0.10 0.00 177.43 0.10 0.10 0.00 177.44 0.10 0.10 0.00 177.45 0.10 0.10 0.00 177.46 0.10 0.10 0.00 177.47 0.10 0.10 0.00 177.48 0.10 0.10 0.00 177.49 0.10 0.10 0.00 177.50 0.10 0.10 0.00 177.51 0.10 0.10 0.00 177.52 0.10 0.10 0.00 177.53 0.10 0.10 0.00 177.54 0.10 0.10 0.00 177.55 0.10 0.10 0.00 177.56 0.10 0.10 0.00 177.57 0.10 0.10 0.00 177.58 0.10 0.10 0.00 177.59 0.10 0.10 0.00 177.60 0.10 0.10 0.00 177.61 0.10 0.10 0.00 177.62 0.10 0.10 0.00 177.63 0.10 0.10 0.00 177.64 0.10 0.10 0.00 177.65 0.10 0.10 0.00 177.66 0.10 0.10 0.00 177.67 0.10 0.10 0.00 177.68 0.10 0.10 0.00 177.69 0.10 0.10 0.00 177.70 0.10 0.10 0.00 177.71 0.10 0.10 0.00 177.72 0.10 0.10 0.00 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 31HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.73 0.10 0.10 0.00 177.74 0.10 0.10 0.00 177.75 0.10 0.10 0.00 177.76 0.10 0.10 0.00 177.77 0.10 0.10 0.00 177.78 0.10 0.10 0.00 177.79 0.10 0.10 0.00 177.80 0.10 0.10 0.00 177.81 0.10 0.10 0.00 177.82 0.10 0.10 0.00 177.83 0.10 0.10 0.00 177.84 0.10 0.10 0.00 177.85 0.10 0.10 0.00 177.86 0.10 0.10 0.00 177.87 0.10 0.10 0.00 177.88 0.10 0.10 0.00 177.89 0.10 0.10 0.00 177.90 0.10 0.10 0.00 177.91 0.10 0.10 0.00 177.92 0.10 0.10 0.00 177.93 0.10 0.10 0.00 177.94 0.10 0.10 0.00 177.95 0.10 0.10 0.00 177.96 0.10 0.10 0.00 177.97 0.10 0.10 0.00 177.98 0.10 0.10 0.00 177.99 0.10 0.10 0.00 178.00 0.10 0.10 0.00 178.01 0.10 0.10 0.00 178.02 0.10 0.10 0.00 178.03 0.10 0.10 0.00 178.04 0.10 0.10 0.00 178.05 0.10 0.10 0.00 178.06 0.10 0.10 0.00 178.07 0.10 0.10 0.00 178.08 0.10 0.10 0.00 178.09 0.10 0.10 0.00 178.10 0.10 0.10 0.00 178.11 0.10 0.10 0.00 178.12 0.10 0.10 0.00 178.13 0.10 0.10 0.00 178.14 0.10 0.10 0.00 178.15 0.10 0.10 0.00 178.16 0.10 0.10 0.00 178.17 0.10 0.10 0.00 178.18 0.10 0.10 0.00 178.19 0.10 0.10 0.00 178.20 0.10 0.10 0.00 178.21 0.10 0.10 0.00 178.22 0.10 0.10 0.00 178.23 0.10 0.10 0.00 178.24 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.25 0.10 0.10 0.00 178.26 0.10 0.10 0.00 178.27 0.10 0.10 0.00 178.28 0.10 0.10 0.00 178.29 0.10 0.10 0.00 178.30 0.10 0.10 0.00 178.31 0.10 0.10 0.00 178.32 0.10 0.10 0.00 178.33 0.10 0.10 0.00 178.34 0.10 0.10 0.00 178.35 0.10 0.10 0.00 178.36 0.10 0.10 0.00 178.37 0.10 0.10 0.00 178.38 0.10 0.10 0.00 178.39 0.10 0.10 0.00 178.40 0.10 0.10 0.00 178.41 0.10 0.10 0.00 178.42 0.10 0.10 0.00 178.43 0.10 0.10 0.00 178.44 0.10 0.10 0.00 178.45 0.10 0.10 0.00 178.46 0.10 0.10 0.00 178.47 0.10 0.10 0.00 178.48 0.10 0.10 0.00 178.49 0.10 0.10 0.00 178.50 0.10 0.10 0.00 178.51 0.10 0.10 0.00 178.52 0.10 0.10 0.00 178.53 0.10 0.10 0.00 178.54 0.10 0.10 0.00 178.55 0.10 0.10 0.00 178.56 0.10 0.10 0.00 178.57 0.10 0.10 0.00 178.58 0.10 0.10 0.00 178.59 0.10 0.10 0.00 178.60 0.10 0.10 0.00 178.61 0.10 0.10 0.00 178.62 0.10 0.10 0.00 178.63 0.10 0.10 0.00 178.64 0.10 0.10 0.00 178.65 0.10 0.10 0.00 178.66 0.10 0.10 0.00 178.67 0.10 0.10 0.00 178.68 0.10 0.10 0.00 178.69 0.10 0.10 0.00 178.70 0.10 0.10 0.00 178.71 0.10 0.10 0.00 178.72 0.10 0.10 0.00 178.73 0.10 0.10 0.00 178.74 0.10 0.10 0.00 178.75 0.10 0.10 0.00 178.76 0.10 0.10 0.00 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 32HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.77 0.10 0.10 0.00 178.78 0.10 0.10 0.00 178.79 0.10 0.10 0.00 178.80 0.10 0.10 0.00 178.81 0.10 0.10 0.00 178.82 0.10 0.10 0.00 178.83 0.10 0.10 0.00 178.84 0.10 0.10 0.00 178.85 0.10 0.10 0.00 178.86 0.10 0.10 0.00 178.87 0.10 0.10 0.00 178.88 0.10 0.10 0.00 178.89 0.10 0.10 0.00 178.90 0.10 0.10 0.00 178.91 0.10 0.10 0.00 178.92 0.10 0.10 0.00 178.93 0.10 0.10 0.00 178.94 0.10 0.10 0.00 178.95 0.10 0.10 0.00 178.96 0.10 0.10 0.00 178.97 0.10 0.10 0.00 178.98 0.10 0.10 0.00 178.99 0.10 0.10 0.00 179.00 0.10 0.10 0.00 179.01 0.10 0.10 0.00 179.02 0.10 0.10 0.00 179.03 0.10 0.10 0.00 179.04 0.10 0.10 0.01 179.05 0.10 0.10 0.01 179.06 0.11 0.10 0.01 179.07 0.11 0.10 0.02 179.08 0.12 0.10 0.02 179.09 0.12 0.10 0.02 179.10 0.13 0.10 0.03 179.11 0.13 0.10 0.04 179.12 0.14 0.10 0.04 179.13 0.15 0.10 0.05 179.14 0.15 0.10 0.06 179.15 0.16 0.10 0.07 179.16 0.17 0.10 0.07 179.17 0.18 0.10 0.08 179.18 0.19 0.10 0.09 179.19 0.20 0.10 0.10 179.20 0.21 0.10 0.11 179.21 0.22 0.10 0.12 179.22 0.23 0.10 0.13 179.23 0.24 0.10 0.14 179.24 0.25 0.10 0.16 179.25 0.26 0.10 0.17 179.26 0.28 0.10 0.18 179.27 0.29 0.10 0.19 179.28 0.30 0.10 0.20 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.29 0.31 0.10 0.22 179.30 0.33 0.10 0.23 179.31 0.34 0.10 0.24 179.32 0.35 0.10 0.26 179.33 0.37 0.10 0.27 179.34 0.38 0.10 0.28 179.35 0.39 0.10 0.30 179.36 0.41 0.10 0.31 179.37 0.42 0.10 0.32 179.38 0.43 0.10 0.34 179.39 0.45 0.10 0.35 179.40 0.46 0.10 0.36 179.41 0.47 0.10 0.38 179.42 0.49 0.10 0.39 179.43 0.50 0.10 0.40 179.44 0.51 0.10 0.41 179.45 0.52 0.10 0.43 179.46 0.53 0.10 0.44 179.47 0.54 0.10 0.45 179.48 0.55 0.10 0.46 179.49 0.56 0.10 0.47 179.50 0.57 0.10 0.47 179.51 0.58 0.10 0.48 179.52 0.59 0.10 0.49 179.53 0.60 0.10 0.50 179.54 0.61 0.10 0.51 179.55 0.61 0.10 0.52 179.56 0.62 0.10 0.53 179.57 0.63 0.10 0.53 179.58 0.64 0.10 0.54 179.59 0.65 0.10 0.55 179.60 0.66 0.10 0.56 179.61 0.66 0.10 0.57 179.62 0.67 0.10 0.58 179.63 0.68 0.10 0.58 179.64 0.69 0.10 0.59 179.65 0.69 0.10 0.60 179.66 0.70 0.10 0.61 179.67 0.71 0.10 0.61 179.68 0.72 0.10 0.62 179.69 0.72 0.10 0.63 179.70 0.73 0.10 0.63 179.71 0.74 0.10 0.64 179.72 0.74 0.10 0.65 179.73 0.75 0.10 0.66 179.74 0.76 0.10 0.66 179.75 0.77 0.10 0.67 179.76 0.77 0.10 0.68 179.77 0.78 0.10 0.68 179.78 0.78 0.10 0.69 179.79 0.79 0.10 0.69 179.80 0.80 0.10 0.70 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 33HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.81 0.80 0.10 0.71 179.82 0.81 0.10 0.71 179.83 0.82 0.10 0.72 179.84 0.82 0.10 0.73 179.85 0.83 0.10 0.73 179.86 0.83 0.10 0.74 179.87 0.84 0.10 0.74 179.88 0.85 0.10 0.75 179.89 0.85 0.10 0.76 179.90 0.86 0.10 0.76 179.91 0.86 0.10 0.77 179.92 0.87 0.10 0.77 179.93 0.88 0.10 0.78 179.94 0.88 0.10 0.79 179.95 0.89 0.10 0.79 179.96 0.89 0.10 0.80 179.97 0.90 0.10 0.80 179.98 0.90 0.10 0.81 179.99 0.91 0.10 0.81 180.00 0.92 0.10 0.82 180.01 0.92 0.10 0.82 180.02 0.93 0.10 0.83 180.03 0.93 0.10 0.83 180.04 0.94 0.10 0.84 180.05 0.94 0.10 0.85 180.06 0.95 0.10 0.85 180.07 0.95 0.10 0.86 180.08 0.96 0.10 0.86 180.09 0.96 0.10 0.87 180.10 0.97 0.10 0.87 180.11 0.97 0.10 0.88 180.12 0.98 0.10 0.88 180.13 0.98 0.10 0.89 180.14 0.99 0.10 0.89 180.15 0.99 0.10 0.90 180.16 1.00 0.10 0.90 180.17 1.00 0.10 0.91 180.18 1.01 0.10 0.91 180.19 1.01 0.10 0.92 180.20 1.02 0.10 0.92 180.21 1.02 0.10 0.93 180.22 1.03 0.10 0.93 180.23 1.03 0.10 0.94 180.24 1.04 0.10 0.94 180.25 1.04 0.10 0.95 180.26 1.06 0.10 0.96 180.27 1.08 0.10 0.99 180.28 1.11 0.10 1.02 180.29 1.15 0.10 1.05 180.30 1.19 0.10 1.09 180.31 1.23 0.10 1.14 180.32 1.28 0.10 1.19 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.33 1.33 0.10 1.24 180.34 1.39 0.10 1.29 180.35 1.44 0.10 1.35 180.36 1.50 0.10 1.40 180.37 1.56 0.10 1.47 180.38 1.63 0.10 1.53 180.39 1.69 0.10 1.60 180.40 1.76 0.10 1.66 180.41 1.83 0.10 1.74 180.42 1.90 0.10 1.81 180.43 1.98 0.10 1.88 180.44 2.06 0.10 1.96 180.45 2.13 0.10 2.04 180.46 2.22 0.10 2.12 180.47 2.30 0.10 2.20 180.48 2.39 0.10 2.29 180.49 2.48 0.10 2.38 180.50 2.57 0.10 2.47 180.51 2.66 0.10 2.57 180.52 2.76 0.10 2.66 180.53 2.85 0.10 2.76 180.54 2.95 0.10 2.86 180.55 3.05 0.10 2.96 180.56 3.16 0.10 3.06 180.57 3.26 0.10 3.17 180.58 3.37 0.10 3.27 180.59 3.48 0.10 3.38 180.60 3.59 0.10 3.49 180.61 3.70 0.10 3.60 180.62 3.82 0.10 3.72 180.63 3.93 0.10 3.84 180.64 4.05 0.10 3.95 180.65 4.17 0.10 4.07 180.66 4.29 0.10 4.20 180.67 4.42 0.10 4.32 180.68 4.55 0.10 4.45 180.69 4.68 0.10 4.58 180.70 4.81 0.10 4.71 180.71 4.94 0.10 4.85 180.72 5.08 0.10 4.98 180.73 5.22 0.10 5.12 180.74 5.36 0.10 5.26 180.75 5.50 0.10 5.40 180.76 5.64 0.10 5.54 180.77 5.79 0.10 5.69 180.78 5.93 0.10 5.84 180.79 6.08 0.10 5.99 180.80 6.23 0.10 6.14 180.81 6.39 0.10 6.29 180.82 6.54 0.10 6.45 180.83 6.70 0.10 6.60 180.84 6.86 0.10 6.76 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 34HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.85 7.02 0.10 6.92 180.86 7.19 0.10 7.09 180.87 7.36 0.10 7.26 180.88 7.53 0.10 7.43 180.89 7.71 0.10 7.61 180.90 7.88 0.10 7.79 180.91 8.06 0.10 7.97 180.92 8.24 0.10 8.15 180.93 8.43 0.10 8.33 180.94 8.61 0.10 8.52 180.95 8.80 0.10 8.71 180.96 8.99 0.10 8.90 180.97 9.19 0.10 9.09 180.98 9.38 0.10 9.28 180.99 9.58 0.10 9.48 181.00 9.78 0.10 9.68 181.01 9.98 0.10 9.88 181.02 10.18 0.10 10.09 181.03 10.39 0.10 10.29 181.04 10.60 0.10 10.50 181.05 10.81 0.10 10.71 181.06 10.99 0.10 10.90 181.07 11.18 0.10 11.08 181.08 11.37 0.10 11.27 181.09 11.55 0.10 11.46 181.10 11.74 0.10 11.65 181.11 11.93 0.10 11.84 181.12 12.12 0.10 12.03 181.13 12.32 0.10 12.22 181.14 12.51 0.10 12.41 181.15 12.70 0.10 12.61 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 35HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 175.65 1,738 0 175.66 1,738 7 175.67 1,738 14 175.68 1,738 21 175.69 1,738 28 175.70 1,738 35 175.71 1,738 42 175.72 1,738 49 175.73 1,738 56 175.74 1,738 63 175.75 1,738 70 175.76 1,738 76 175.77 1,738 83 175.78 1,738 90 175.79 1,738 97 175.80 1,738 104 175.81 1,738 111 175.82 1,738 118 175.83 1,738 125 175.84 1,738 132 175.85 1,738 139 175.86 1,738 146 175.87 1,738 153 175.88 1,738 160 175.89 1,738 167 175.90 1,738 174 175.91 1,738 181 175.92 1,738 188 175.93 1,738 195 175.94 1,738 202 175.95 1,738 209 175.96 1,738 215 175.97 1,738 222 175.98 1,738 229 175.99 1,738 236 176.00 1,738 243 176.01 1,738 250 176.02 1,738 257 176.03 1,738 264 176.04 1,738 271 176.05 1,738 278 176.06 1,738 285 176.07 1,738 292 176.08 1,738 299 176.09 1,738 306 176.10 1,738 313 176.11 1,738 320 176.12 1,738 327 176.13 1,738 334 176.14 1,738 341 176.15 1,738 348 176.16 1,738 354 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.17 1,738 361 176.18 1,738 368 176.19 1,738 375 176.20 1,738 382 176.21 1,738 389 176.22 1,738 396 176.23 1,738 403 176.24 1,738 410 176.25 1,738 417 176.26 1,738 424 176.27 1,738 431 176.28 1,738 438 176.29 1,738 445 176.30 1,738 452 176.31 1,738 459 176.32 1,738 466 176.33 1,738 473 176.34 1,738 480 176.35 1,738 487 176.36 1,738 494 176.37 1,738 500 176.38 1,738 507 176.39 1,738 514 176.40 1,738 521 176.41 1,738 535 176.42 1,738 549 176.43 1,738 564 176.44 1,738 578 176.45 1,738 592 176.46 1,738 606 176.47 1,738 620 176.48 1,738 634 176.49 1,738 648 176.50 1,738 662 176.51 1,738 676 176.52 1,738 690 176.53 1,738 704 176.54 1,738 718 176.55 1,738 732 176.56 1,738 746 176.57 1,738 760 176.58 1,738 774 176.59 1,738 788 176.60 1,738 802 176.61 1,738 816 176.62 1,738 830 176.63 1,738 844 176.64 1,738 858 176.65 1,738 872 176.66 1,738 886 176.67 1,738 900 176.68 1,738 914 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 36HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.69 1,738 928 176.70 1,738 942 176.71 1,738 956 176.72 1,738 970 176.73 1,738 984 176.74 1,738 998 176.75 1,738 1,012 176.76 1,738 1,025 176.77 1,738 1,039 176.78 1,738 1,053 176.79 1,738 1,067 176.80 1,738 1,081 176.81 1,738 1,095 176.82 1,738 1,109 176.83 1,738 1,123 176.84 1,738 1,137 176.85 1,738 1,150 176.86 1,738 1,164 176.87 1,738 1,178 176.88 1,738 1,192 176.89 1,738 1,206 176.90 1,738 1,220 176.91 1,738 1,233 176.92 1,738 1,247 176.93 1,738 1,261 176.94 1,738 1,275 176.95 1,738 1,289 176.96 1,738 1,303 176.97 1,738 1,316 176.98 1,738 1,330 176.99 1,738 1,344 177.00 1,738 1,358 177.01 1,738 1,371 177.02 1,738 1,385 177.03 1,738 1,399 177.04 1,738 1,413 177.05 1,738 1,427 177.06 1,738 1,440 177.07 1,738 1,454 177.08 1,738 1,468 177.09 1,738 1,481 177.10 1,738 1,495 177.11 1,738 1,509 177.12 1,738 1,523 177.13 1,738 1,536 177.14 1,738 1,550 177.15 1,738 1,564 177.16 1,738 1,577 177.17 1,738 1,591 177.18 1,738 1,605 177.19 1,738 1,618 177.20 1,738 1,632 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.21 1,738 1,646 177.22 1,738 1,659 177.23 1,738 1,673 177.24 1,738 1,686 177.25 1,738 1,700 177.26 1,738 1,714 177.27 1,738 1,727 177.28 1,738 1,741 177.29 1,738 1,754 177.30 1,738 1,768 177.31 1,738 1,782 177.32 1,738 1,795 177.33 1,738 1,809 177.34 1,738 1,822 177.35 1,738 1,836 177.36 1,738 1,849 177.37 1,738 1,863 177.38 1,738 1,876 177.39 1,738 1,890 177.40 1,738 1,903 177.41 1,738 1,917 177.42 1,738 1,930 177.43 1,738 1,944 177.44 1,738 1,957 177.45 1,738 1,971 177.46 1,738 1,984 177.47 1,738 1,998 177.48 1,738 2,011 177.49 1,738 2,025 177.50 1,738 2,038 177.51 1,738 2,051 177.52 1,738 2,065 177.53 1,738 2,078 177.54 1,738 2,092 177.55 1,738 2,105 177.56 1,738 2,118 177.57 1,738 2,132 177.58 1,738 2,145 177.59 1,738 2,158 177.60 1,738 2,172 177.61 1,738 2,185 177.62 1,738 2,198 177.63 1,738 2,212 177.64 1,738 2,225 177.65 1,738 2,238 177.66 1,738 2,252 177.67 1,738 2,265 177.68 1,738 2,278 177.69 1,738 2,291 177.70 1,738 2,305 177.71 1,738 2,318 177.72 1,738 2,331 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 37HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.73 1,738 2,344 177.74 1,738 2,358 177.75 1,738 2,371 177.76 1,738 2,384 177.77 1,738 2,397 177.78 1,738 2,410 177.79 1,738 2,423 177.80 1,738 2,437 177.81 1,738 2,450 177.82 1,738 2,463 177.83 1,738 2,476 177.84 1,738 2,489 177.85 1,738 2,502 177.86 1,738 2,515 177.87 1,738 2,528 177.88 1,738 2,541 177.89 1,738 2,554 177.90 1,738 2,567 177.91 1,738 2,581 177.92 1,738 2,594 177.93 1,738 2,607 177.94 1,738 2,620 177.95 1,738 2,633 177.96 1,738 2,646 177.97 1,738 2,658 177.98 1,738 2,671 177.99 1,738 2,684 178.00 1,738 2,697 178.01 1,738 2,710 178.02 1,738 2,723 178.03 1,738 2,736 178.04 1,738 2,749 178.05 1,738 2,762 178.06 1,738 2,775 178.07 1,738 2,788 178.08 1,738 2,800 178.09 1,738 2,813 178.10 1,738 2,826 178.11 1,738 2,839 178.12 1,738 2,852 178.13 1,738 2,864 178.14 1,738 2,877 178.15 1,738 2,890 178.16 1,738 2,903 178.17 1,738 2,915 178.18 1,738 2,928 178.19 1,738 2,941 178.20 1,738 2,954 178.21 1,738 2,966 178.22 1,738 2,979 178.23 1,738 2,992 178.24 1,738 3,004 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.25 1,738 3,017 178.26 1,738 3,030 178.27 1,738 3,042 178.28 1,738 3,055 178.29 1,738 3,067 178.30 1,738 3,080 178.31 1,738 3,092 178.32 1,738 3,105 178.33 1,738 3,117 178.34 1,738 3,130 178.35 1,738 3,143 178.36 1,738 3,155 178.37 1,738 3,167 178.38 1,738 3,180 178.39 1,738 3,192 178.40 1,738 3,205 178.41 1,738 3,217 178.42 1,738 3,230 178.43 1,738 3,242 178.44 1,738 3,254 178.45 1,738 3,267 178.46 1,738 3,279 178.47 1,738 3,291 178.48 1,738 3,304 178.49 1,738 3,316 178.50 1,738 3,328 178.51 1,738 3,341 178.52 1,738 3,353 178.53 1,738 3,365 178.54 1,738 3,377 178.55 1,738 3,389 178.56 1,738 3,402 178.57 1,738 3,414 178.58 1,738 3,426 178.59 1,738 3,438 178.60 1,738 3,450 178.61 1,738 3,462 178.62 1,738 3,474 178.63 1,738 3,487 178.64 1,738 3,499 178.65 1,738 3,511 178.66 1,738 3,523 178.67 1,738 3,535 178.68 1,738 3,547 178.69 1,738 3,559 178.70 1,738 3,571 178.71 1,738 3,582 178.72 1,738 3,594 178.73 1,738 3,606 178.74 1,738 3,618 178.75 1,738 3,630 178.76 1,738 3,642 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 38HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.77 1,738 3,654 178.78 1,738 3,665 178.79 1,738 3,677 178.80 1,738 3,689 178.81 1,738 3,701 178.82 1,738 3,713 178.83 1,738 3,724 178.84 1,738 3,736 178.85 1,738 3,748 178.86 1,738 3,759 178.87 1,738 3,771 178.88 1,738 3,783 178.89 1,738 3,794 178.90 1,738 3,806 178.91 1,738 3,817 178.92 1,738 3,829 178.93 1,738 3,840 178.94 1,738 3,852 178.95 1,738 3,863 178.96 1,738 3,875 178.97 1,738 3,886 178.98 1,738 3,898 178.99 1,738 3,909 179.00 1,738 3,920 179.01 1,738 3,932 179.02 1,738 3,943 179.03 1,738 3,954 179.04 1,738 3,965 179.05 1,738 3,977 179.06 1,738 3,988 179.07 1,738 3,999 179.08 1,738 4,010 179.09 1,738 4,022 179.10 1,738 4,033 179.11 1,738 4,044 179.12 1,738 4,055 179.13 1,738 4,066 179.14 1,738 4,077 179.15 1,738 4,088 179.16 1,738 4,099 179.17 1,738 4,110 179.18 1,738 4,121 179.19 1,738 4,132 179.20 1,738 4,143 179.21 1,738 4,154 179.22 1,738 4,164 179.23 1,738 4,175 179.24 1,738 4,186 179.25 1,738 4,197 179.26 1,738 4,207 179.27 1,738 4,218 179.28 1,738 4,229 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.29 1,738 4,239 179.30 1,738 4,250 179.31 1,738 4,261 179.32 1,738 4,271 179.33 1,738 4,282 179.34 1,738 4,292 179.35 1,738 4,303 179.36 1,738 4,313 179.37 1,738 4,323 179.38 1,738 4,334 179.39 1,738 4,344 179.40 1,738 4,354 179.41 1,738 4,365 179.42 1,738 4,375 179.43 1,738 4,385 179.44 1,738 4,395 179.45 1,738 4,405 179.46 1,738 4,416 179.47 1,738 4,426 179.48 1,738 4,436 179.49 1,738 4,446 179.50 1,738 4,456 179.51 1,738 4,466 179.52 1,738 4,475 179.53 1,738 4,485 179.54 1,738 4,495 179.55 1,738 4,505 179.56 1,738 4,514 179.57 1,738 4,524 179.58 1,738 4,534 179.59 1,738 4,543 179.60 1,738 4,553 179.61 1,738 4,562 179.62 1,738 4,572 179.63 1,738 4,581 179.64 1,738 4,591 179.65 1,738 4,600 179.66 1,738 4,609 179.67 1,738 4,618 179.68 1,738 4,627 179.69 1,738 4,636 179.70 1,738 4,645 179.71 1,738 4,654 179.72 1,738 4,663 179.73 1,738 4,672 179.74 1,738 4,680 179.75 1,738 4,689 179.76 1,738 4,698 179.77 1,738 4,706 179.78 1,738 4,714 179.79 1,738 4,723 179.80 1,738 4,731 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 39HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.81 1,738 4,739 179.82 1,738 4,747 179.83 1,738 4,755 179.84 1,738 4,763 179.85 1,738 4,771 179.86 1,738 4,779 179.87 1,738 4,787 179.88 1,738 4,795 179.89 1,738 4,802 179.90 1,738 4,810 179.91 1,738 4,818 179.92 1,738 4,825 179.93 1,738 4,833 179.94 1,738 4,840 179.95 1,738 4,848 179.96 1,738 4,855 179.97 1,738 4,863 179.98 1,738 4,870 179.99 1,738 4,878 180.00 1,738 4,885 180.01 1,738 4,893 180.02 1,738 4,900 180.03 1,738 4,907 180.04 1,738 4,915 180.05 1,738 4,922 180.06 1,738 4,929 180.07 1,738 4,936 180.08 1,738 4,944 180.09 1,738 4,951 180.10 1,738 4,958 180.11 1,738 4,965 180.12 1,738 4,972 180.13 1,738 4,979 180.14 1,738 4,986 180.15 1,738 4,993 180.16 1,738 5,000 180.17 1,738 5,007 180.18 1,738 5,014 180.19 1,738 5,021 180.20 1,738 5,028 180.21 1,738 5,035 180.22 1,738 5,042 180.23 1,738 5,049 180.24 1,738 5,055 180.25 1,738 5,062 180.26 1,738 5,069 180.27 1,738 5,076 180.28 1,738 5,083 180.29 1,738 5,090 180.30 1,738 5,097 180.31 1,738 5,104 180.32 1,738 5,111 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.33 1,738 5,118 180.34 1,738 5,125 180.35 1,738 5,132 180.36 1,738 5,139 180.37 1,738 5,146 180.38 1,738 5,153 180.39 1,738 5,160 180.40 1,738 5,167 180.41 1,738 5,174 180.42 1,738 5,181 180.43 1,738 5,188 180.44 1,738 5,195 180.45 1,738 5,201 180.46 1,738 5,208 180.47 1,738 5,215 180.48 1,738 5,222 180.49 1,738 5,229 180.50 1,738 5,236 180.51 1,738 5,243 180.52 1,738 5,250 180.53 1,738 5,257 180.54 1,738 5,264 180.55 1,738 5,271 180.56 1,738 5,278 180.57 1,738 5,285 180.58 1,738 5,292 180.59 1,738 5,299 180.60 1,738 5,306 180.61 1,738 5,313 180.62 1,738 5,320 180.63 1,738 5,327 180.64 1,738 5,334 180.65 1,738 5,340 180.66 1,738 5,347 180.67 1,738 5,354 180.68 1,738 5,361 180.69 1,738 5,368 180.70 1,738 5,375 180.71 1,738 5,382 180.72 1,738 5,389 180.73 1,738 5,396 180.74 1,738 5,403 180.75 1,738 5,410 180.76 1,738 5,417 180.77 1,738 5,424 180.78 1,738 5,431 180.79 1,738 5,438 180.80 1,738 5,445 180.81 1,738 5,452 180.82 1,738 5,459 180.83 1,738 5,466 180.84 1,738 5,473 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 40HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.85 1,738 5,479 180.86 1,738 5,486 180.87 1,738 5,493 180.88 1,738 5,500 180.89 1,738 5,507 180.90 1,738 5,514 180.91 1,738 5,521 180.92 1,738 5,528 180.93 1,738 5,535 180.94 1,738 5,542 180.95 1,738 5,549 180.96 1,738 5,556 180.97 1,738 5,563 180.98 1,738 5,570 180.99 1,738 5,577 181.00 1,738 5,584 181.01 1,738 5,591 181.02 1,738 5,598 181.03 1,738 5,605 181.04 1,738 5,612 181.05 1,738 5,619 181.06 1,738 5,625 181.07 1,738 5,632 181.08 1,738 5,639 181.09 1,738 5,646 181.10 1,738 5,653 181.11 1,738 5,660 181.12 1,738 5,667 181.13 1,738 5,674 181.14 1,738 5,681 181.15 1,738 5,688 Type III 24-hr WQV Rainfall=1.00"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 41HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,968 sf, 21.15% Impervious, Inflow Depth = 0.00" for WQV event Inflow = 0.00 cfs @ 24.03 hrs, Volume= 0 cf Primary = 0.00 cfs @ 24.03 hrs, Volume= 0 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 42HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=16,145 sf 22.38% Impervious Runoff Depth=1.21"Subcatchment DA 1A: DA 1A Tc=10.0 min CN=74 Runoff=0.44 cfs 1,622 cf Runoff Area=16,665 sf 100.00% Impervious Runoff Depth=3.22"Subcatchment DA 1B: DA 1B Tc=5.0 min CN=98 Runoff=1.33 cfs 4,467 cf Runoff Area=47,379 sf 1.50% Impervious Runoff Depth=0.82"Subcatchment DA 1C: DA 1C Tc=10.0 min CN=67 Runoff=0.79 cfs 3,246 cf Runoff Area=10,641 sf 41.23% Impervious Runoff Depth=1.67"Subcatchment DA 1D: DA 1D Tc=5.0 min CN=81 Runoff=0.49 cfs 1,479 cf Runoff Area=29,138 sf 0.00% Impervious Runoff Depth=0.82"Subcatchment DA 1E: DA 1E Flow Length=446' Tc=10.7 min CN=67 Runoff=0.47 cfs 1,996 cf Peak Elev=184.59' Storage=703 cf Inflow=0.44 cfs 1,622 cfPond RG-A: Rain Garden A Discarded=0.04 cfs 1,622 cf Primary=0.00 cfs 0 cf Outflow=0.04 cfs 1,622 cf Peak Elev=157.08' Storage=625 cf Inflow=0.49 cfs 1,479 cfPond RG-B: Rain Garden B Discarded=0.04 cfs 1,479 cf Primary=0.00 cfs 0 cf Outflow=0.04 cfs 1,479 cf Peak Elev=177.25' Storage=1,702 cf Inflow=1.33 cfs 4,467 cfPond SWB: Stormtech MC 3500 (SWM-B) Discarded=0.10 cfs 4,467 cf Primary=0.00 cfs 0 cf Outflow=0.10 cfs 4,467 cf Inflow=1.26 cfs 5,242 cfLink TSD: Total Site Discharge Primary=1.26 cfs 5,242 cf Total Runoff Area = 119,968 sf Runoff Volume = 12,811 cf Average Runoff Depth = 1.28" 78.85% Pervious = 94,594 sf 21.15% Impervious = 25,374 sf Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 43HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1A: DA 1A Runoff = 0.44 cfs @ 12.15 hrs, Volume= 1,622 cf, Depth= 1.21" Routed to Pond RG-A : Rain Garden A Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 6,492 66 Woods, Poor, HSG B 6,040 69 50-75% Grass cover, Fair, HSG B 3,613 98 Paved parking, HSG B 16,145 74 Weighted Average 12,532 77.62% Pervious Area 3,613 22.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 44HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1B: DA 1B Runoff = 1.33 cfs @ 12.07 hrs, Volume= 4,467 cf, Depth= 3.22" Routed to Pond SWB : Stormtech MC 3500 (SWM-B) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 4,000 98 Roofs, HSG B 12,665 98 Paved parking, HSG B 16,665 98 Weighted Average 16,665 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 45HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1C: DA 1C Runoff = 0.79 cfs @ 12.16 hrs, Volume= 3,246 cf, Depth= 0.82" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 709 98 Paved parking, HSG B 22,996 66 Woods, Poor, HSG B 23,674 67 Brush, Poor, HSG B 47,379 67 Weighted Average 46,670 98.50% Pervious Area 709 1.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 46HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1D: DA 1D Runoff = 0.49 cfs @ 12.08 hrs, Volume= 1,479 cf, Depth= 1.67" Routed to Pond RG-B : Rain Garden B Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 4,387 98 Paved parking, HSG B 6,254 69 50-75% Grass cover, Fair, HSG B 10,641 81 Weighted Average 6,254 58.77% Pervious Area 4,387 41.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 47HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1E: DA 1E Runoff = 0.47 cfs @ 12.17 hrs, Volume= 1,996 cf, Depth= 0.82" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2-Year Rainfall=3.45" Area (sf) CN Description 20,116 66 Woods, Poor, HSG B 9,022 69 50-75% Grass cover, Fair, HSG B 29,138 67 Weighted Average 29,138 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.7 100 0.2400 0.22 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 3.0 346 0.0750 1.92 Shallow Concentrated Flow, SHALLOW Short Grass Pasture Kv= 7.0 fps 10.7 446 Total Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 48HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-A: Rain Garden A Inflow Area = 16,145 sf, 22.38% Impervious, Inflow Depth = 1.21" for 2-Year event Inflow = 0.44 cfs @ 12.15 hrs, Volume= 1,622 cf Outflow = 0.04 cfs @ 13.79 hrs, Volume= 1,622 cf, Atten= 90%, Lag= 98.8 min Discarded = 0.04 cfs @ 13.79 hrs, Volume= 1,622 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 184.59' @ 13.79 hrs Surf.Area= 800 sf Storage= 703 cf Plug-Flow detention time= 204.6 min calculated for 1,621 cf (100% of inflow) Center-of-Mass det. time= 204.6 min ( 1,065.7 - 861.2 ) Volume Invert Avail.Storage Storage Description #1 183.00' 1,404 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 183.00 143 0 0 184.00 501 322 322 185.00 1,011 756 1,078 185.30 1,164 326 1,404 Device Routing Invert Outlet Devices #1 Primary 185.00'15.0' long x 3.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.41 2.56 2.69 2.67 2.66 2.66 2.65 2.67 2.67 2.70 2.77 2.83 2.87 2.93 3.10 3.19 3.32 #2 Discarded 183.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.04 cfs @ 13.79 hrs HW=184.59' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.04 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=183.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 49HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.00 0.00 0.00 0.00 183.01 0.01 0.01 0.00 183.02 0.01 0.01 0.00 183.03 0.01 0.01 0.00 183.04 0.01 0.01 0.00 183.05 0.01 0.01 0.00 183.06 0.01 0.01 0.00 183.07 0.01 0.01 0.00 183.08 0.01 0.01 0.00 183.09 0.01 0.01 0.00 183.10 0.01 0.01 0.00 183.11 0.01 0.01 0.00 183.12 0.01 0.01 0.00 183.13 0.01 0.01 0.00 183.14 0.01 0.01 0.00 183.15 0.01 0.01 0.00 183.16 0.01 0.01 0.00 183.17 0.01 0.01 0.00 183.18 0.01 0.01 0.00 183.19 0.01 0.01 0.00 183.20 0.01 0.01 0.00 183.21 0.01 0.01 0.00 183.22 0.01 0.01 0.00 183.23 0.01 0.01 0.00 183.24 0.01 0.01 0.00 183.25 0.01 0.01 0.00 183.26 0.01 0.01 0.00 183.27 0.01 0.01 0.00 183.28 0.01 0.01 0.00 183.29 0.01 0.01 0.00 183.30 0.01 0.01 0.00 183.31 0.01 0.01 0.00 183.32 0.01 0.01 0.00 183.33 0.01 0.01 0.00 183.34 0.01 0.01 0.00 183.35 0.01 0.01 0.00 183.36 0.02 0.02 0.00 183.37 0.02 0.02 0.00 183.38 0.02 0.02 0.00 183.39 0.02 0.02 0.00 183.40 0.02 0.02 0.00 183.41 0.02 0.02 0.00 183.42 0.02 0.02 0.00 183.43 0.02 0.02 0.00 183.44 0.02 0.02 0.00 183.45 0.02 0.02 0.00 183.46 0.02 0.02 0.00 183.47 0.02 0.02 0.00 183.48 0.02 0.02 0.00 183.49 0.02 0.02 0.00 183.50 0.02 0.02 0.00 183.51 0.02 0.02 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.52 0.02 0.02 0.00 183.53 0.02 0.02 0.00 183.54 0.02 0.02 0.00 183.55 0.02 0.02 0.00 183.56 0.02 0.02 0.00 183.57 0.02 0.02 0.00 183.58 0.02 0.02 0.00 183.59 0.02 0.02 0.00 183.60 0.02 0.02 0.00 183.61 0.02 0.02 0.00 183.62 0.02 0.02 0.00 183.63 0.02 0.02 0.00 183.64 0.02 0.02 0.00 183.65 0.02 0.02 0.00 183.66 0.02 0.02 0.00 183.67 0.02 0.02 0.00 183.68 0.02 0.02 0.00 183.69 0.02 0.02 0.00 183.70 0.02 0.02 0.00 183.71 0.02 0.02 0.00 183.72 0.02 0.02 0.00 183.73 0.02 0.02 0.00 183.74 0.02 0.02 0.00 183.75 0.02 0.02 0.00 183.76 0.02 0.02 0.00 183.77 0.02 0.02 0.00 183.78 0.02 0.02 0.00 183.79 0.02 0.02 0.00 183.80 0.02 0.02 0.00 183.81 0.02 0.02 0.00 183.82 0.02 0.02 0.00 183.83 0.02 0.02 0.00 183.84 0.02 0.02 0.00 183.85 0.02 0.02 0.00 183.86 0.03 0.03 0.00 183.87 0.03 0.03 0.00 183.88 0.03 0.03 0.00 183.89 0.03 0.03 0.00 183.90 0.03 0.03 0.00 183.91 0.03 0.03 0.00 183.92 0.03 0.03 0.00 183.93 0.03 0.03 0.00 183.94 0.03 0.03 0.00 183.95 0.03 0.03 0.00 183.96 0.03 0.03 0.00 183.97 0.03 0.03 0.00 183.98 0.03 0.03 0.00 183.99 0.03 0.03 0.00 184.00 0.03 0.03 0.00 184.01 0.03 0.03 0.00 184.02 0.03 0.03 0.00 184.03 0.03 0.03 0.00 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 50HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.04 0.03 0.03 0.00 184.05 0.03 0.03 0.00 184.06 0.03 0.03 0.00 184.07 0.03 0.03 0.00 184.08 0.03 0.03 0.00 184.09 0.03 0.03 0.00 184.10 0.03 0.03 0.00 184.11 0.03 0.03 0.00 184.12 0.03 0.03 0.00 184.13 0.03 0.03 0.00 184.14 0.03 0.03 0.00 184.15 0.03 0.03 0.00 184.16 0.03 0.03 0.00 184.17 0.03 0.03 0.00 184.18 0.03 0.03 0.00 184.19 0.03 0.03 0.00 184.20 0.03 0.03 0.00 184.21 0.03 0.03 0.00 184.22 0.03 0.03 0.00 184.23 0.03 0.03 0.00 184.24 0.03 0.03 0.00 184.25 0.03 0.03 0.00 184.26 0.04 0.04 0.00 184.27 0.04 0.04 0.00 184.28 0.04 0.04 0.00 184.29 0.04 0.04 0.00 184.30 0.04 0.04 0.00 184.31 0.04 0.04 0.00 184.32 0.04 0.04 0.00 184.33 0.04 0.04 0.00 184.34 0.04 0.04 0.00 184.35 0.04 0.04 0.00 184.36 0.04 0.04 0.00 184.37 0.04 0.04 0.00 184.38 0.04 0.04 0.00 184.39 0.04 0.04 0.00 184.40 0.04 0.04 0.00 184.41 0.04 0.04 0.00 184.42 0.04 0.04 0.00 184.43 0.04 0.04 0.00 184.44 0.04 0.04 0.00 184.45 0.04 0.04 0.00 184.46 0.04 0.04 0.00 184.47 0.04 0.04 0.00 184.48 0.04 0.04 0.00 184.49 0.04 0.04 0.00 184.50 0.04 0.04 0.00 184.51 0.04 0.04 0.00 184.52 0.04 0.04 0.00 184.53 0.04 0.04 0.00 184.54 0.04 0.04 0.00 184.55 0.04 0.04 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.56 0.04 0.04 0.00 184.57 0.04 0.04 0.00 184.58 0.04 0.04 0.00 184.59 0.04 0.04 0.00 184.60 0.04 0.04 0.00 184.61 0.05 0.05 0.00 184.62 0.05 0.05 0.00 184.63 0.05 0.05 0.00 184.64 0.05 0.05 0.00 184.65 0.05 0.05 0.00 184.66 0.05 0.05 0.00 184.67 0.05 0.05 0.00 184.68 0.05 0.05 0.00 184.69 0.05 0.05 0.00 184.70 0.05 0.05 0.00 184.71 0.05 0.05 0.00 184.72 0.05 0.05 0.00 184.73 0.05 0.05 0.00 184.74 0.05 0.05 0.00 184.75 0.05 0.05 0.00 184.76 0.05 0.05 0.00 184.77 0.05 0.05 0.00 184.78 0.05 0.05 0.00 184.79 0.05 0.05 0.00 184.80 0.05 0.05 0.00 184.81 0.05 0.05 0.00 184.82 0.05 0.05 0.00 184.83 0.05 0.05 0.00 184.84 0.05 0.05 0.00 184.85 0.05 0.05 0.00 184.86 0.05 0.05 0.00 184.87 0.05 0.05 0.00 184.88 0.05 0.05 0.00 184.89 0.05 0.05 0.00 184.90 0.05 0.05 0.00 184.91 0.05 0.05 0.00 184.92 0.05 0.05 0.00 184.93 0.05 0.05 0.00 184.94 0.05 0.05 0.00 184.95 0.05 0.05 0.00 184.96 0.06 0.06 0.00 184.97 0.06 0.06 0.00 184.98 0.06 0.06 0.00 184.99 0.06 0.06 0.00 185.00 0.06 0.06 0.00 185.01 0.09 0.06 0.04 185.02 0.16 0.06 0.10 185.03 0.24 0.06 0.19 185.04 0.35 0.06 0.29 185.05 0.46 0.06 0.40 185.06 0.59 0.06 0.53 185.07 0.73 0.06 0.67 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 51HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 185.08 0.88 0.06 0.82 185.09 1.03 0.06 0.98 185.10 1.20 0.06 1.14 185.11 1.38 0.06 1.32 185.12 1.56 0.06 1.50 185.13 1.75 0.06 1.69 185.14 1.95 0.06 1.89 185.15 2.16 0.06 2.10 185.16 2.37 0.06 2.31 185.17 2.59 0.06 2.53 185.18 2.82 0.06 2.76 185.19 3.06 0.06 2.99 185.20 3.30 0.06 3.23 185.21 3.55 0.06 3.49 185.22 3.82 0.06 3.75 185.23 4.09 0.06 4.02 185.24 4.37 0.06 4.30 185.25 4.65 0.06 4.59 185.26 4.95 0.06 4.88 185.27 5.25 0.06 5.18 185.28 5.55 0.06 5.49 185.29 5.87 0.06 5.80 185.30 6.19 0.06 6.12 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 52HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.00 143 0 183.01 147 1 183.02 150 3 183.03 154 4 183.04 157 6 183.05 161 8 183.06 164 9 183.07 168 11 183.08 172 13 183.09 175 14 183.10 179 16 183.11 182 18 183.12 186 20 183.13 190 22 183.14 193 24 183.15 197 25 183.16 200 27 183.17 204 29 183.18 207 32 183.19 211 34 183.20 215 36 183.21 218 38 183.22 222 40 183.23 225 42 183.24 229 45 183.25 233 47 183.26 236 49 183.27 240 52 183.28 243 54 183.29 247 57 183.30 250 59 183.31 254 62 183.32 258 64 183.33 261 67 183.34 265 69 183.35 268 72 183.36 272 75 183.37 275 77 183.38 279 80 183.39 283 83 183.40 286 86 183.41 290 89 183.42 293 92 183.43 297 95 183.44 301 98 183.45 304 101 183.46 308 104 183.47 311 107 183.48 315 110 183.49 318 113 183.50 322 116 183.51 326 119 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.52 329 123 183.53 333 126 183.54 336 129 183.55 340 133 183.56 343 136 183.57 347 140 183.58 351 143 183.59 354 147 183.60 358 150 183.61 361 154 183.62 365 157 183.63 369 161 183.64 372 165 183.65 376 169 183.66 379 172 183.67 383 176 183.68 386 180 183.69 390 184 183.70 394 188 183.71 397 192 183.72 401 196 183.73 404 200 183.74 408 204 183.75 412 208 183.76 415 212 183.77 419 216 183.78 422 220 183.79 426 225 183.80 429 229 183.81 433 233 183.82 437 238 183.83 440 242 183.84 444 246 183.85 447 251 183.86 451 255 183.87 454 260 183.88 458 264 183.89 462 269 183.90 465 274 183.91 469 278 183.92 472 283 183.93 476 288 183.94 480 293 183.95 483 297 183.96 487 302 183.97 490 307 183.98 494 312 183.99 497 317 184.00 501 322 184.01 506 327 184.02 511 332 184.03 516 337 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 53HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.04 521 342 184.05 527 348 184.06 532 353 184.07 537 358 184.08 542 364 184.09 547 369 184.10 552 375 184.11 557 380 184.12 562 386 184.13 567 391 184.14 572 397 184.15 578 403 184.16 583 409 184.17 588 415 184.18 593 420 184.19 598 426 184.20 603 432 184.21 608 438 184.22 613 445 184.23 618 451 184.24 623 457 184.25 629 463 184.26 634 469 184.27 639 476 184.28 644 482 184.29 649 489 184.30 654 495 184.31 659 502 184.32 664 508 184.33 669 515 184.34 674 522 184.35 679 529 184.36 685 535 184.37 690 542 184.38 695 549 184.39 700 556 184.40 705 563 184.41 710 570 184.42 715 577 184.43 720 585 184.44 725 592 184.45 730 599 184.46 736 606 184.47 741 614 184.48 746 621 184.49 751 629 184.50 756 636 184.51 761 644 184.52 766 651 184.53 771 659 184.54 776 667 184.55 782 675 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.56 787 683 184.57 792 690 184.58 797 698 184.59 802 706 184.60 807 714 184.61 812 722 184.62 817 731 184.63 822 739 184.64 827 747 184.65 833 755 184.66 838 764 184.67 843 772 184.68 848 781 184.69 853 789 184.70 858 798 184.71 863 806 184.72 868 815 184.73 873 824 184.74 878 832 184.75 884 841 184.76 889 850 184.77 894 859 184.78 899 868 184.79 904 877 184.80 909 886 184.81 914 895 184.82 919 904 184.83 924 913 184.84 929 923 184.85 934 932 184.86 940 941 184.87 945 951 184.88 950 960 184.89 955 970 184.90 960 979 184.91 965 989 184.92 970 999 184.93 975 1,008 184.94 980 1,018 184.95 985 1,028 184.96 991 1,038 184.97 996 1,048 184.98 1,001 1,058 184.99 1,006 1,068 185.00 1,011 1,078 185.01 1,016 1,088 185.02 1,021 1,098 185.03 1,026 1,109 185.04 1,031 1,119 185.05 1,037 1,129 185.06 1,042 1,140 185.07 1,047 1,150 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 54HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 185.08 1,052 1,161 185.09 1,057 1,171 185.10 1,062 1,182 185.11 1,067 1,192 185.12 1,072 1,203 185.13 1,077 1,214 185.14 1,082 1,225 185.15 1,088 1,235 185.16 1,093 1,246 185.17 1,098 1,257 185.18 1,103 1,268 185.19 1,108 1,279 185.20 1,113 1,290 185.21 1,118 1,302 185.22 1,123 1,313 185.23 1,128 1,324 185.24 1,133 1,335 185.25 1,138 1,347 185.26 1,144 1,358 185.27 1,149 1,370 185.28 1,154 1,381 185.29 1,159 1,393 185.30 1,164 1,404 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 55HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-B: Rain Garden B Inflow Area = 10,641 sf, 41.23% Impervious, Inflow Depth = 1.67" for 2-Year event Inflow = 0.49 cfs @ 12.08 hrs, Volume= 1,479 cf Outflow = 0.04 cfs @ 13.41 hrs, Volume= 1,479 cf, Atten= 92%, Lag= 80.0 min Discarded = 0.04 cfs @ 13.41 hrs, Volume= 1,479 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 157.08' @ 13.41 hrs Surf.Area= 729 sf Storage= 625 cf Plug-Flow detention time= 162.1 min calculated for 1,479 cf (100% of inflow) Center-of-Mass det. time= 162.1 min ( 997.0 - 834.9 ) Volume Invert Avail.Storage Storage Description #1 156.00' 1,767 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 156.00 437 0 0 157.00 704 571 571 158.00 1,037 871 1,441 158.30 1,135 326 1,767 Device Routing Invert Outlet Devices #1 Primary 158.00'15.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 156.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.04 cfs @ 13.41 hrs HW=157.08' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.04 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=156.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 56HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.00 0.00 0.00 0.00 156.01 0.02 0.02 0.00 156.02 0.02 0.02 0.00 156.03 0.02 0.02 0.00 156.04 0.02 0.02 0.00 156.05 0.03 0.03 0.00 156.06 0.03 0.03 0.00 156.07 0.03 0.03 0.00 156.08 0.03 0.03 0.00 156.09 0.03 0.03 0.00 156.10 0.03 0.03 0.00 156.11 0.03 0.03 0.00 156.12 0.03 0.03 0.00 156.13 0.03 0.03 0.00 156.14 0.03 0.03 0.00 156.15 0.03 0.03 0.00 156.16 0.03 0.03 0.00 156.17 0.03 0.03 0.00 156.18 0.03 0.03 0.00 156.19 0.03 0.03 0.00 156.20 0.03 0.03 0.00 156.21 0.03 0.03 0.00 156.22 0.03 0.03 0.00 156.23 0.03 0.03 0.00 156.24 0.03 0.03 0.00 156.25 0.03 0.03 0.00 156.26 0.03 0.03 0.00 156.27 0.03 0.03 0.00 156.28 0.03 0.03 0.00 156.29 0.03 0.03 0.00 156.30 0.03 0.03 0.00 156.31 0.03 0.03 0.00 156.32 0.03 0.03 0.00 156.33 0.03 0.03 0.00 156.34 0.03 0.03 0.00 156.35 0.03 0.03 0.00 156.36 0.03 0.03 0.00 156.37 0.03 0.03 0.00 156.38 0.03 0.03 0.00 156.39 0.03 0.03 0.00 156.40 0.03 0.03 0.00 156.41 0.03 0.03 0.00 156.42 0.03 0.03 0.00 156.43 0.03 0.03 0.00 156.44 0.03 0.03 0.00 156.45 0.03 0.03 0.00 156.46 0.03 0.03 0.00 156.47 0.03 0.03 0.00 156.48 0.03 0.03 0.00 156.49 0.03 0.03 0.00 156.50 0.03 0.03 0.00 156.51 0.03 0.03 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.52 0.03 0.03 0.00 156.53 0.03 0.03 0.00 156.54 0.03 0.03 0.00 156.55 0.03 0.03 0.00 156.56 0.03 0.03 0.00 156.57 0.03 0.03 0.00 156.58 0.03 0.03 0.00 156.59 0.03 0.03 0.00 156.60 0.03 0.03 0.00 156.61 0.03 0.03 0.00 156.62 0.03 0.03 0.00 156.63 0.03 0.03 0.00 156.64 0.03 0.03 0.00 156.65 0.03 0.03 0.00 156.66 0.03 0.03 0.00 156.67 0.03 0.03 0.00 156.68 0.03 0.03 0.00 156.69 0.03 0.03 0.00 156.70 0.03 0.03 0.00 156.71 0.03 0.03 0.00 156.72 0.03 0.03 0.00 156.73 0.04 0.04 0.00 156.74 0.04 0.04 0.00 156.75 0.04 0.04 0.00 156.76 0.04 0.04 0.00 156.77 0.04 0.04 0.00 156.78 0.04 0.04 0.00 156.79 0.04 0.04 0.00 156.80 0.04 0.04 0.00 156.81 0.04 0.04 0.00 156.82 0.04 0.04 0.00 156.83 0.04 0.04 0.00 156.84 0.04 0.04 0.00 156.85 0.04 0.04 0.00 156.86 0.04 0.04 0.00 156.87 0.04 0.04 0.00 156.88 0.04 0.04 0.00 156.89 0.04 0.04 0.00 156.90 0.04 0.04 0.00 156.91 0.04 0.04 0.00 156.92 0.04 0.04 0.00 156.93 0.04 0.04 0.00 156.94 0.04 0.04 0.00 156.95 0.04 0.04 0.00 156.96 0.04 0.04 0.00 156.97 0.04 0.04 0.00 156.98 0.04 0.04 0.00 156.99 0.04 0.04 0.00 157.00 0.04 0.04 0.00 157.01 0.04 0.04 0.00 157.02 0.04 0.04 0.00 157.03 0.04 0.04 0.00 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 57HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.04 0.04 0.04 0.00 157.05 0.04 0.04 0.00 157.06 0.04 0.04 0.00 157.07 0.04 0.04 0.00 157.08 0.04 0.04 0.00 157.09 0.04 0.04 0.00 157.10 0.04 0.04 0.00 157.11 0.04 0.04 0.00 157.12 0.04 0.04 0.00 157.13 0.04 0.04 0.00 157.14 0.04 0.04 0.00 157.15 0.04 0.04 0.00 157.16 0.04 0.04 0.00 157.17 0.04 0.04 0.00 157.18 0.04 0.04 0.00 157.19 0.04 0.04 0.00 157.20 0.04 0.04 0.00 157.21 0.04 0.04 0.00 157.22 0.04 0.04 0.00 157.23 0.04 0.04 0.00 157.24 0.04 0.04 0.00 157.25 0.04 0.04 0.00 157.26 0.04 0.04 0.00 157.27 0.04 0.04 0.00 157.28 0.04 0.04 0.00 157.29 0.04 0.04 0.00 157.30 0.04 0.04 0.00 157.31 0.04 0.04 0.00 157.32 0.05 0.05 0.00 157.33 0.05 0.05 0.00 157.34 0.05 0.05 0.00 157.35 0.05 0.05 0.00 157.36 0.05 0.05 0.00 157.37 0.05 0.05 0.00 157.38 0.05 0.05 0.00 157.39 0.05 0.05 0.00 157.40 0.05 0.05 0.00 157.41 0.05 0.05 0.00 157.42 0.05 0.05 0.00 157.43 0.05 0.05 0.00 157.44 0.05 0.05 0.00 157.45 0.05 0.05 0.00 157.46 0.05 0.05 0.00 157.47 0.05 0.05 0.00 157.48 0.05 0.05 0.00 157.49 0.05 0.05 0.00 157.50 0.05 0.05 0.00 157.51 0.05 0.05 0.00 157.52 0.05 0.05 0.00 157.53 0.05 0.05 0.00 157.54 0.05 0.05 0.00 157.55 0.05 0.05 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.56 0.05 0.05 0.00 157.57 0.05 0.05 0.00 157.58 0.05 0.05 0.00 157.59 0.05 0.05 0.00 157.60 0.05 0.05 0.00 157.61 0.05 0.05 0.00 157.62 0.05 0.05 0.00 157.63 0.05 0.05 0.00 157.64 0.05 0.05 0.00 157.65 0.05 0.05 0.00 157.66 0.05 0.05 0.00 157.67 0.05 0.05 0.00 157.68 0.05 0.05 0.00 157.69 0.05 0.05 0.00 157.70 0.05 0.05 0.00 157.71 0.05 0.05 0.00 157.72 0.05 0.05 0.00 157.73 0.05 0.05 0.00 157.74 0.05 0.05 0.00 157.75 0.05 0.05 0.00 157.76 0.05 0.05 0.00 157.77 0.05 0.05 0.00 157.78 0.05 0.05 0.00 157.79 0.05 0.05 0.00 157.80 0.05 0.05 0.00 157.81 0.05 0.05 0.00 157.82 0.05 0.05 0.00 157.83 0.05 0.05 0.00 157.84 0.05 0.05 0.00 157.85 0.05 0.05 0.00 157.86 0.06 0.06 0.00 157.87 0.06 0.06 0.00 157.88 0.06 0.06 0.00 157.89 0.06 0.06 0.00 157.90 0.06 0.06 0.00 157.91 0.06 0.06 0.00 157.92 0.06 0.06 0.00 157.93 0.06 0.06 0.00 157.94 0.06 0.06 0.00 157.95 0.06 0.06 0.00 157.96 0.06 0.06 0.00 157.97 0.06 0.06 0.00 157.98 0.06 0.06 0.00 157.99 0.06 0.06 0.00 158.00 0.06 0.06 0.00 158.01 0.09 0.06 0.04 158.02 0.16 0.06 0.10 158.03 0.24 0.06 0.19 158.04 0.34 0.06 0.29 158.05 0.46 0.06 0.40 158.06 0.58 0.06 0.52 158.07 0.72 0.06 0.66 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 58HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 158.08 0.87 0.06 0.81 158.09 1.02 0.06 0.96 158.10 1.19 0.06 1.13 158.11 1.36 0.06 1.30 158.12 1.54 0.06 1.48 158.13 1.73 0.06 1.67 158.14 1.93 0.06 1.87 158.15 2.13 0.06 2.07 158.16 2.35 0.06 2.28 158.17 2.56 0.06 2.50 158.18 2.79 0.06 2.73 158.19 3.02 0.06 2.96 158.20 3.25 0.06 3.19 158.21 3.51 0.06 3.45 158.22 3.77 0.06 3.71 158.23 4.04 0.06 3.98 158.24 4.32 0.06 4.25 158.25 4.60 0.06 4.54 158.26 4.89 0.06 4.83 158.27 5.19 0.06 5.13 158.28 5.49 0.06 5.43 158.29 5.81 0.06 5.74 158.30 6.13 0.06 6.06 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 59HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.00 437 0 156.01 440 4 156.02 442 9 156.03 445 13 156.04 448 18 156.05 450 22 156.06 453 27 156.07 456 31 156.08 458 36 156.09 461 40 156.10 464 45 156.11 466 50 156.12 469 54 156.13 472 59 156.14 474 64 156.15 477 69 156.16 480 73 156.17 482 78 156.18 485 83 156.19 488 88 156.20 490 93 156.21 493 98 156.22 496 103 156.23 498 108 156.24 501 113 156.25 504 118 156.26 506 123 156.27 509 128 156.28 512 133 156.29 514 138 156.30 517 143 156.31 520 148 156.32 522 154 156.33 525 159 156.34 528 164 156.35 530 169 156.36 533 175 156.37 536 180 156.38 538 185 156.39 541 191 156.40 544 196 156.41 546 202 156.42 549 207 156.43 552 213 156.44 554 218 156.45 557 224 156.46 560 229 156.47 562 235 156.48 565 241 156.49 568 246 156.50 571 252 156.51 573 258 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.52 576 263 156.53 579 269 156.54 581 275 156.55 584 281 156.56 587 287 156.57 589 292 156.58 592 298 156.59 595 304 156.60 597 310 156.61 600 316 156.62 603 322 156.63 605 328 156.64 608 334 156.65 611 340 156.66 613 347 156.67 616 353 156.68 619 359 156.69 621 365 156.70 624 371 156.71 627 378 156.72 629 384 156.73 632 390 156.74 635 396 156.75 637 403 156.76 640 409 156.77 643 416 156.78 645 422 156.79 648 429 156.80 651 435 156.81 653 442 156.82 656 448 156.83 659 455 156.84 661 461 156.85 664 468 156.86 667 475 156.87 669 481 156.88 672 488 156.89 675 495 156.90 677 501 156.91 680 508 156.92 683 515 156.93 685 522 156.94 688 529 156.95 691 536 156.96 693 543 156.97 696 550 156.98 699 556 156.99 701 563 157.00 704 571 157.01 707 578 157.02 711 585 157.03 714 592 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 60HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.04 717 599 157.05 721 606 157.06 724 613 157.07 727 621 157.08 731 628 157.09 734 635 157.10 737 643 157.11 741 650 157.12 744 657 157.13 747 665 157.14 751 672 157.15 754 680 157.16 757 687 157.17 761 695 157.18 764 703 157.19 767 710 157.20 771 718 157.21 774 726 157.22 777 733 157.23 781 741 157.24 784 749 157.25 787 757 157.26 791 765 157.27 794 773 157.28 797 781 157.29 801 789 157.30 804 797 157.31 807 805 157.32 811 813 157.33 814 821 157.34 817 829 157.35 821 837 157.36 824 846 157.37 827 854 157.38 831 862 157.39 834 870 157.40 837 879 157.41 841 887 157.42 844 896 157.43 847 904 157.44 851 912 157.45 854 921 157.46 857 930 157.47 861 938 157.48 864 947 157.49 867 955 157.50 871 964 157.51 874 973 157.52 877 982 157.53 880 990 157.54 884 999 157.55 887 1,008 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.56 890 1,017 157.57 894 1,026 157.58 897 1,035 157.59 900 1,044 157.60 904 1,053 157.61 907 1,062 157.62 910 1,071 157.63 914 1,080 157.64 917 1,089 157.65 920 1,098 157.66 924 1,108 157.67 927 1,117 157.68 930 1,126 157.69 934 1,136 157.70 937 1,145 157.71 940 1,154 157.72 944 1,164 157.73 947 1,173 157.74 950 1,183 157.75 954 1,192 157.76 957 1,202 157.77 960 1,211 157.78 964 1,221 157.79 967 1,231 157.80 970 1,240 157.81 974 1,250 157.82 977 1,260 157.83 980 1,270 157.84 984 1,279 157.85 987 1,289 157.86 990 1,299 157.87 994 1,309 157.88 997 1,319 157.89 1,000 1,329 157.90 1,004 1,339 157.91 1,007 1,349 157.92 1,010 1,359 157.93 1,014 1,369 157.94 1,017 1,379 157.95 1,020 1,390 157.96 1,024 1,400 157.97 1,027 1,410 157.98 1,030 1,420 157.99 1,034 1,431 158.00 1,037 1,441 158.01 1,040 1,451 158.02 1,044 1,462 158.03 1,047 1,472 158.04 1,050 1,483 158.05 1,053 1,493 158.06 1,057 1,504 158.07 1,060 1,514 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 61HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 158.08 1,063 1,525 158.09 1,066 1,536 158.10 1,070 1,546 158.11 1,073 1,557 158.12 1,076 1,568 158.13 1,079 1,579 158.14 1,083 1,589 158.15 1,086 1,600 158.16 1,089 1,611 158.17 1,093 1,622 158.18 1,096 1,633 158.19 1,099 1,644 158.20 1,102 1,655 158.21 1,106 1,666 158.22 1,109 1,677 158.23 1,112 1,688 158.24 1,115 1,699 158.25 1,119 1,710 158.26 1,122 1,722 158.27 1,125 1,733 158.28 1,128 1,744 158.29 1,132 1,755 158.30 1,135 1,767 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 62HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond SWB: Stormtech MC 3500 (SWM-B) Inflow Area = 16,665 sf,100.00% Impervious, Inflow Depth = 3.22" for 2-Year event Inflow = 1.33 cfs @ 12.07 hrs, Volume= 4,467 cf Outflow = 0.10 cfs @ 11.20 hrs, Volume= 4,467 cf, Atten= 93%, Lag= 0.0 min Discarded = 0.10 cfs @ 11.20 hrs, Volume= 4,467 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 177.25' @ 13.10 hrs Surf.Area= 1,738 sf Storage= 1,702 cf Plug-Flow detention time= 132.3 min calculated for 4,466 cf (100% of inflow) Center-of-Mass det. time= 132.2 min ( 886.2 - 753.9 ) Volume Invert Avail.Storage Storage Description #1A 175.65' 2,580 cf 8.42'W x 206.46'L x 5.50'H Field A 9,557 cf Overall - 3,108 cf Embedded = 6,449 cf x 40.0% Voids #2A 176.40' 3,108 cf ADS_StormTech MC-3500 d +Cap x 28 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 5,688 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 175.65'15.0" Round Outlet Pipe L= 45.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 175.65' / 166.00' S= 0.2144 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf #2 Device 1 179.00'6.0" Vert. Low Flow Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 180.25'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 #4 Discarded 175.65'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 11.20 hrs HW=175.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=175.65' (Free Discharge) 1=Outlet Pipe ( Controls 0.00 cfs) 2=Low Flow Orifice ( Controls 0.00 cfs) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 63HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pond SWB: Stormtech MC 3500 (SWM-B) - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 28 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 204.46' Row Length +12.0" End Stone x 2 = 206.46' Base Length 1 Rows x 77.0" Wide + 12.0" Side Stone x 2 = 8.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 12.0" Stone Cover = 5.50' Field Height 28 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 1 Rows = 3,108.5 cf Chamber Storage 9,557.4 cf Field - 3,108.5 cf Chambers = 6,448.9 cf Stone x 40.0% Voids = 2,579.6 cf Stone Storage Chamber Storage + Stone Storage = 5,688.0 cf = 0.131 af Overall Storage Efficiency = 59.5% Overall System Size = 206.46' x 8.42' x 5.50' 28 Chambers 354.0 cy Field 238.8 cy Stone Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 64HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 175.65 0.00 0.00 0.00 175.66 0.10 0.10 0.00 175.67 0.10 0.10 0.00 175.68 0.10 0.10 0.00 175.69 0.10 0.10 0.00 175.70 0.10 0.10 0.00 175.71 0.10 0.10 0.00 175.72 0.10 0.10 0.00 175.73 0.10 0.10 0.00 175.74 0.10 0.10 0.00 175.75 0.10 0.10 0.00 175.76 0.10 0.10 0.00 175.77 0.10 0.10 0.00 175.78 0.10 0.10 0.00 175.79 0.10 0.10 0.00 175.80 0.10 0.10 0.00 175.81 0.10 0.10 0.00 175.82 0.10 0.10 0.00 175.83 0.10 0.10 0.00 175.84 0.10 0.10 0.00 175.85 0.10 0.10 0.00 175.86 0.10 0.10 0.00 175.87 0.10 0.10 0.00 175.88 0.10 0.10 0.00 175.89 0.10 0.10 0.00 175.90 0.10 0.10 0.00 175.91 0.10 0.10 0.00 175.92 0.10 0.10 0.00 175.93 0.10 0.10 0.00 175.94 0.10 0.10 0.00 175.95 0.10 0.10 0.00 175.96 0.10 0.10 0.00 175.97 0.10 0.10 0.00 175.98 0.10 0.10 0.00 175.99 0.10 0.10 0.00 176.00 0.10 0.10 0.00 176.01 0.10 0.10 0.00 176.02 0.10 0.10 0.00 176.03 0.10 0.10 0.00 176.04 0.10 0.10 0.00 176.05 0.10 0.10 0.00 176.06 0.10 0.10 0.00 176.07 0.10 0.10 0.00 176.08 0.10 0.10 0.00 176.09 0.10 0.10 0.00 176.10 0.10 0.10 0.00 176.11 0.10 0.10 0.00 176.12 0.10 0.10 0.00 176.13 0.10 0.10 0.00 176.14 0.10 0.10 0.00 176.15 0.10 0.10 0.00 176.16 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.17 0.10 0.10 0.00 176.18 0.10 0.10 0.00 176.19 0.10 0.10 0.00 176.20 0.10 0.10 0.00 176.21 0.10 0.10 0.00 176.22 0.10 0.10 0.00 176.23 0.10 0.10 0.00 176.24 0.10 0.10 0.00 176.25 0.10 0.10 0.00 176.26 0.10 0.10 0.00 176.27 0.10 0.10 0.00 176.28 0.10 0.10 0.00 176.29 0.10 0.10 0.00 176.30 0.10 0.10 0.00 176.31 0.10 0.10 0.00 176.32 0.10 0.10 0.00 176.33 0.10 0.10 0.00 176.34 0.10 0.10 0.00 176.35 0.10 0.10 0.00 176.36 0.10 0.10 0.00 176.37 0.10 0.10 0.00 176.38 0.10 0.10 0.00 176.39 0.10 0.10 0.00 176.40 0.10 0.10 0.00 176.41 0.10 0.10 0.00 176.42 0.10 0.10 0.00 176.43 0.10 0.10 0.00 176.44 0.10 0.10 0.00 176.45 0.10 0.10 0.00 176.46 0.10 0.10 0.00 176.47 0.10 0.10 0.00 176.48 0.10 0.10 0.00 176.49 0.10 0.10 0.00 176.50 0.10 0.10 0.00 176.51 0.10 0.10 0.00 176.52 0.10 0.10 0.00 176.53 0.10 0.10 0.00 176.54 0.10 0.10 0.00 176.55 0.10 0.10 0.00 176.56 0.10 0.10 0.00 176.57 0.10 0.10 0.00 176.58 0.10 0.10 0.00 176.59 0.10 0.10 0.00 176.60 0.10 0.10 0.00 176.61 0.10 0.10 0.00 176.62 0.10 0.10 0.00 176.63 0.10 0.10 0.00 176.64 0.10 0.10 0.00 176.65 0.10 0.10 0.00 176.66 0.10 0.10 0.00 176.67 0.10 0.10 0.00 176.68 0.10 0.10 0.00 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 65HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.69 0.10 0.10 0.00 176.70 0.10 0.10 0.00 176.71 0.10 0.10 0.00 176.72 0.10 0.10 0.00 176.73 0.10 0.10 0.00 176.74 0.10 0.10 0.00 176.75 0.10 0.10 0.00 176.76 0.10 0.10 0.00 176.77 0.10 0.10 0.00 176.78 0.10 0.10 0.00 176.79 0.10 0.10 0.00 176.80 0.10 0.10 0.00 176.81 0.10 0.10 0.00 176.82 0.10 0.10 0.00 176.83 0.10 0.10 0.00 176.84 0.10 0.10 0.00 176.85 0.10 0.10 0.00 176.86 0.10 0.10 0.00 176.87 0.10 0.10 0.00 176.88 0.10 0.10 0.00 176.89 0.10 0.10 0.00 176.90 0.10 0.10 0.00 176.91 0.10 0.10 0.00 176.92 0.10 0.10 0.00 176.93 0.10 0.10 0.00 176.94 0.10 0.10 0.00 176.95 0.10 0.10 0.00 176.96 0.10 0.10 0.00 176.97 0.10 0.10 0.00 176.98 0.10 0.10 0.00 176.99 0.10 0.10 0.00 177.00 0.10 0.10 0.00 177.01 0.10 0.10 0.00 177.02 0.10 0.10 0.00 177.03 0.10 0.10 0.00 177.04 0.10 0.10 0.00 177.05 0.10 0.10 0.00 177.06 0.10 0.10 0.00 177.07 0.10 0.10 0.00 177.08 0.10 0.10 0.00 177.09 0.10 0.10 0.00 177.10 0.10 0.10 0.00 177.11 0.10 0.10 0.00 177.12 0.10 0.10 0.00 177.13 0.10 0.10 0.00 177.14 0.10 0.10 0.00 177.15 0.10 0.10 0.00 177.16 0.10 0.10 0.00 177.17 0.10 0.10 0.00 177.18 0.10 0.10 0.00 177.19 0.10 0.10 0.00 177.20 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.21 0.10 0.10 0.00 177.22 0.10 0.10 0.00 177.23 0.10 0.10 0.00 177.24 0.10 0.10 0.00 177.25 0.10 0.10 0.00 177.26 0.10 0.10 0.00 177.27 0.10 0.10 0.00 177.28 0.10 0.10 0.00 177.29 0.10 0.10 0.00 177.30 0.10 0.10 0.00 177.31 0.10 0.10 0.00 177.32 0.10 0.10 0.00 177.33 0.10 0.10 0.00 177.34 0.10 0.10 0.00 177.35 0.10 0.10 0.00 177.36 0.10 0.10 0.00 177.37 0.10 0.10 0.00 177.38 0.10 0.10 0.00 177.39 0.10 0.10 0.00 177.40 0.10 0.10 0.00 177.41 0.10 0.10 0.00 177.42 0.10 0.10 0.00 177.43 0.10 0.10 0.00 177.44 0.10 0.10 0.00 177.45 0.10 0.10 0.00 177.46 0.10 0.10 0.00 177.47 0.10 0.10 0.00 177.48 0.10 0.10 0.00 177.49 0.10 0.10 0.00 177.50 0.10 0.10 0.00 177.51 0.10 0.10 0.00 177.52 0.10 0.10 0.00 177.53 0.10 0.10 0.00 177.54 0.10 0.10 0.00 177.55 0.10 0.10 0.00 177.56 0.10 0.10 0.00 177.57 0.10 0.10 0.00 177.58 0.10 0.10 0.00 177.59 0.10 0.10 0.00 177.60 0.10 0.10 0.00 177.61 0.10 0.10 0.00 177.62 0.10 0.10 0.00 177.63 0.10 0.10 0.00 177.64 0.10 0.10 0.00 177.65 0.10 0.10 0.00 177.66 0.10 0.10 0.00 177.67 0.10 0.10 0.00 177.68 0.10 0.10 0.00 177.69 0.10 0.10 0.00 177.70 0.10 0.10 0.00 177.71 0.10 0.10 0.00 177.72 0.10 0.10 0.00 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 66HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.73 0.10 0.10 0.00 177.74 0.10 0.10 0.00 177.75 0.10 0.10 0.00 177.76 0.10 0.10 0.00 177.77 0.10 0.10 0.00 177.78 0.10 0.10 0.00 177.79 0.10 0.10 0.00 177.80 0.10 0.10 0.00 177.81 0.10 0.10 0.00 177.82 0.10 0.10 0.00 177.83 0.10 0.10 0.00 177.84 0.10 0.10 0.00 177.85 0.10 0.10 0.00 177.86 0.10 0.10 0.00 177.87 0.10 0.10 0.00 177.88 0.10 0.10 0.00 177.89 0.10 0.10 0.00 177.90 0.10 0.10 0.00 177.91 0.10 0.10 0.00 177.92 0.10 0.10 0.00 177.93 0.10 0.10 0.00 177.94 0.10 0.10 0.00 177.95 0.10 0.10 0.00 177.96 0.10 0.10 0.00 177.97 0.10 0.10 0.00 177.98 0.10 0.10 0.00 177.99 0.10 0.10 0.00 178.00 0.10 0.10 0.00 178.01 0.10 0.10 0.00 178.02 0.10 0.10 0.00 178.03 0.10 0.10 0.00 178.04 0.10 0.10 0.00 178.05 0.10 0.10 0.00 178.06 0.10 0.10 0.00 178.07 0.10 0.10 0.00 178.08 0.10 0.10 0.00 178.09 0.10 0.10 0.00 178.10 0.10 0.10 0.00 178.11 0.10 0.10 0.00 178.12 0.10 0.10 0.00 178.13 0.10 0.10 0.00 178.14 0.10 0.10 0.00 178.15 0.10 0.10 0.00 178.16 0.10 0.10 0.00 178.17 0.10 0.10 0.00 178.18 0.10 0.10 0.00 178.19 0.10 0.10 0.00 178.20 0.10 0.10 0.00 178.21 0.10 0.10 0.00 178.22 0.10 0.10 0.00 178.23 0.10 0.10 0.00 178.24 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.25 0.10 0.10 0.00 178.26 0.10 0.10 0.00 178.27 0.10 0.10 0.00 178.28 0.10 0.10 0.00 178.29 0.10 0.10 0.00 178.30 0.10 0.10 0.00 178.31 0.10 0.10 0.00 178.32 0.10 0.10 0.00 178.33 0.10 0.10 0.00 178.34 0.10 0.10 0.00 178.35 0.10 0.10 0.00 178.36 0.10 0.10 0.00 178.37 0.10 0.10 0.00 178.38 0.10 0.10 0.00 178.39 0.10 0.10 0.00 178.40 0.10 0.10 0.00 178.41 0.10 0.10 0.00 178.42 0.10 0.10 0.00 178.43 0.10 0.10 0.00 178.44 0.10 0.10 0.00 178.45 0.10 0.10 0.00 178.46 0.10 0.10 0.00 178.47 0.10 0.10 0.00 178.48 0.10 0.10 0.00 178.49 0.10 0.10 0.00 178.50 0.10 0.10 0.00 178.51 0.10 0.10 0.00 178.52 0.10 0.10 0.00 178.53 0.10 0.10 0.00 178.54 0.10 0.10 0.00 178.55 0.10 0.10 0.00 178.56 0.10 0.10 0.00 178.57 0.10 0.10 0.00 178.58 0.10 0.10 0.00 178.59 0.10 0.10 0.00 178.60 0.10 0.10 0.00 178.61 0.10 0.10 0.00 178.62 0.10 0.10 0.00 178.63 0.10 0.10 0.00 178.64 0.10 0.10 0.00 178.65 0.10 0.10 0.00 178.66 0.10 0.10 0.00 178.67 0.10 0.10 0.00 178.68 0.10 0.10 0.00 178.69 0.10 0.10 0.00 178.70 0.10 0.10 0.00 178.71 0.10 0.10 0.00 178.72 0.10 0.10 0.00 178.73 0.10 0.10 0.00 178.74 0.10 0.10 0.00 178.75 0.10 0.10 0.00 178.76 0.10 0.10 0.00 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 67HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.77 0.10 0.10 0.00 178.78 0.10 0.10 0.00 178.79 0.10 0.10 0.00 178.80 0.10 0.10 0.00 178.81 0.10 0.10 0.00 178.82 0.10 0.10 0.00 178.83 0.10 0.10 0.00 178.84 0.10 0.10 0.00 178.85 0.10 0.10 0.00 178.86 0.10 0.10 0.00 178.87 0.10 0.10 0.00 178.88 0.10 0.10 0.00 178.89 0.10 0.10 0.00 178.90 0.10 0.10 0.00 178.91 0.10 0.10 0.00 178.92 0.10 0.10 0.00 178.93 0.10 0.10 0.00 178.94 0.10 0.10 0.00 178.95 0.10 0.10 0.00 178.96 0.10 0.10 0.00 178.97 0.10 0.10 0.00 178.98 0.10 0.10 0.00 178.99 0.10 0.10 0.00 179.00 0.10 0.10 0.00 179.01 0.10 0.10 0.00 179.02 0.10 0.10 0.00 179.03 0.10 0.10 0.00 179.04 0.10 0.10 0.01 179.05 0.10 0.10 0.01 179.06 0.11 0.10 0.01 179.07 0.11 0.10 0.02 179.08 0.12 0.10 0.02 179.09 0.12 0.10 0.02 179.10 0.13 0.10 0.03 179.11 0.13 0.10 0.04 179.12 0.14 0.10 0.04 179.13 0.15 0.10 0.05 179.14 0.15 0.10 0.06 179.15 0.16 0.10 0.07 179.16 0.17 0.10 0.07 179.17 0.18 0.10 0.08 179.18 0.19 0.10 0.09 179.19 0.20 0.10 0.10 179.20 0.21 0.10 0.11 179.21 0.22 0.10 0.12 179.22 0.23 0.10 0.13 179.23 0.24 0.10 0.14 179.24 0.25 0.10 0.16 179.25 0.26 0.10 0.17 179.26 0.28 0.10 0.18 179.27 0.29 0.10 0.19 179.28 0.30 0.10 0.20 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.29 0.31 0.10 0.22 179.30 0.33 0.10 0.23 179.31 0.34 0.10 0.24 179.32 0.35 0.10 0.26 179.33 0.37 0.10 0.27 179.34 0.38 0.10 0.28 179.35 0.39 0.10 0.30 179.36 0.41 0.10 0.31 179.37 0.42 0.10 0.32 179.38 0.43 0.10 0.34 179.39 0.45 0.10 0.35 179.40 0.46 0.10 0.36 179.41 0.47 0.10 0.38 179.42 0.49 0.10 0.39 179.43 0.50 0.10 0.40 179.44 0.51 0.10 0.41 179.45 0.52 0.10 0.43 179.46 0.53 0.10 0.44 179.47 0.54 0.10 0.45 179.48 0.55 0.10 0.46 179.49 0.56 0.10 0.47 179.50 0.57 0.10 0.47 179.51 0.58 0.10 0.48 179.52 0.59 0.10 0.49 179.53 0.60 0.10 0.50 179.54 0.61 0.10 0.51 179.55 0.61 0.10 0.52 179.56 0.62 0.10 0.53 179.57 0.63 0.10 0.53 179.58 0.64 0.10 0.54 179.59 0.65 0.10 0.55 179.60 0.66 0.10 0.56 179.61 0.66 0.10 0.57 179.62 0.67 0.10 0.58 179.63 0.68 0.10 0.58 179.64 0.69 0.10 0.59 179.65 0.69 0.10 0.60 179.66 0.70 0.10 0.61 179.67 0.71 0.10 0.61 179.68 0.72 0.10 0.62 179.69 0.72 0.10 0.63 179.70 0.73 0.10 0.63 179.71 0.74 0.10 0.64 179.72 0.74 0.10 0.65 179.73 0.75 0.10 0.66 179.74 0.76 0.10 0.66 179.75 0.77 0.10 0.67 179.76 0.77 0.10 0.68 179.77 0.78 0.10 0.68 179.78 0.78 0.10 0.69 179.79 0.79 0.10 0.69 179.80 0.80 0.10 0.70 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 68HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.81 0.80 0.10 0.71 179.82 0.81 0.10 0.71 179.83 0.82 0.10 0.72 179.84 0.82 0.10 0.73 179.85 0.83 0.10 0.73 179.86 0.83 0.10 0.74 179.87 0.84 0.10 0.74 179.88 0.85 0.10 0.75 179.89 0.85 0.10 0.76 179.90 0.86 0.10 0.76 179.91 0.86 0.10 0.77 179.92 0.87 0.10 0.77 179.93 0.88 0.10 0.78 179.94 0.88 0.10 0.79 179.95 0.89 0.10 0.79 179.96 0.89 0.10 0.80 179.97 0.90 0.10 0.80 179.98 0.90 0.10 0.81 179.99 0.91 0.10 0.81 180.00 0.92 0.10 0.82 180.01 0.92 0.10 0.82 180.02 0.93 0.10 0.83 180.03 0.93 0.10 0.83 180.04 0.94 0.10 0.84 180.05 0.94 0.10 0.85 180.06 0.95 0.10 0.85 180.07 0.95 0.10 0.86 180.08 0.96 0.10 0.86 180.09 0.96 0.10 0.87 180.10 0.97 0.10 0.87 180.11 0.97 0.10 0.88 180.12 0.98 0.10 0.88 180.13 0.98 0.10 0.89 180.14 0.99 0.10 0.89 180.15 0.99 0.10 0.90 180.16 1.00 0.10 0.90 180.17 1.00 0.10 0.91 180.18 1.01 0.10 0.91 180.19 1.01 0.10 0.92 180.20 1.02 0.10 0.92 180.21 1.02 0.10 0.93 180.22 1.03 0.10 0.93 180.23 1.03 0.10 0.94 180.24 1.04 0.10 0.94 180.25 1.04 0.10 0.95 180.26 1.06 0.10 0.96 180.27 1.08 0.10 0.99 180.28 1.11 0.10 1.02 180.29 1.15 0.10 1.05 180.30 1.19 0.10 1.09 180.31 1.23 0.10 1.14 180.32 1.28 0.10 1.19 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.33 1.33 0.10 1.24 180.34 1.39 0.10 1.29 180.35 1.44 0.10 1.35 180.36 1.50 0.10 1.40 180.37 1.56 0.10 1.47 180.38 1.63 0.10 1.53 180.39 1.69 0.10 1.60 180.40 1.76 0.10 1.66 180.41 1.83 0.10 1.74 180.42 1.90 0.10 1.81 180.43 1.98 0.10 1.88 180.44 2.06 0.10 1.96 180.45 2.13 0.10 2.04 180.46 2.22 0.10 2.12 180.47 2.30 0.10 2.20 180.48 2.39 0.10 2.29 180.49 2.48 0.10 2.38 180.50 2.57 0.10 2.47 180.51 2.66 0.10 2.57 180.52 2.76 0.10 2.66 180.53 2.85 0.10 2.76 180.54 2.95 0.10 2.86 180.55 3.05 0.10 2.96 180.56 3.16 0.10 3.06 180.57 3.26 0.10 3.17 180.58 3.37 0.10 3.27 180.59 3.48 0.10 3.38 180.60 3.59 0.10 3.49 180.61 3.70 0.10 3.60 180.62 3.82 0.10 3.72 180.63 3.93 0.10 3.84 180.64 4.05 0.10 3.95 180.65 4.17 0.10 4.07 180.66 4.29 0.10 4.20 180.67 4.42 0.10 4.32 180.68 4.55 0.10 4.45 180.69 4.68 0.10 4.58 180.70 4.81 0.10 4.71 180.71 4.94 0.10 4.85 180.72 5.08 0.10 4.98 180.73 5.22 0.10 5.12 180.74 5.36 0.10 5.26 180.75 5.50 0.10 5.40 180.76 5.64 0.10 5.54 180.77 5.79 0.10 5.69 180.78 5.93 0.10 5.84 180.79 6.08 0.10 5.99 180.80 6.23 0.10 6.14 180.81 6.39 0.10 6.29 180.82 6.54 0.10 6.45 180.83 6.70 0.10 6.60 180.84 6.86 0.10 6.76 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 69HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.85 7.02 0.10 6.92 180.86 7.19 0.10 7.09 180.87 7.36 0.10 7.26 180.88 7.53 0.10 7.43 180.89 7.71 0.10 7.61 180.90 7.88 0.10 7.79 180.91 8.06 0.10 7.97 180.92 8.24 0.10 8.15 180.93 8.43 0.10 8.33 180.94 8.61 0.10 8.52 180.95 8.80 0.10 8.71 180.96 8.99 0.10 8.90 180.97 9.19 0.10 9.09 180.98 9.38 0.10 9.28 180.99 9.58 0.10 9.48 181.00 9.78 0.10 9.68 181.01 9.98 0.10 9.88 181.02 10.18 0.10 10.09 181.03 10.39 0.10 10.29 181.04 10.60 0.10 10.50 181.05 10.81 0.10 10.71 181.06 10.99 0.10 10.90 181.07 11.18 0.10 11.08 181.08 11.37 0.10 11.27 181.09 11.55 0.10 11.46 181.10 11.74 0.10 11.65 181.11 11.93 0.10 11.84 181.12 12.12 0.10 12.03 181.13 12.32 0.10 12.22 181.14 12.51 0.10 12.41 181.15 12.70 0.10 12.61 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 70HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 175.65 1,738 0 175.66 1,738 7 175.67 1,738 14 175.68 1,738 21 175.69 1,738 28 175.70 1,738 35 175.71 1,738 42 175.72 1,738 49 175.73 1,738 56 175.74 1,738 63 175.75 1,738 70 175.76 1,738 76 175.77 1,738 83 175.78 1,738 90 175.79 1,738 97 175.80 1,738 104 175.81 1,738 111 175.82 1,738 118 175.83 1,738 125 175.84 1,738 132 175.85 1,738 139 175.86 1,738 146 175.87 1,738 153 175.88 1,738 160 175.89 1,738 167 175.90 1,738 174 175.91 1,738 181 175.92 1,738 188 175.93 1,738 195 175.94 1,738 202 175.95 1,738 209 175.96 1,738 215 175.97 1,738 222 175.98 1,738 229 175.99 1,738 236 176.00 1,738 243 176.01 1,738 250 176.02 1,738 257 176.03 1,738 264 176.04 1,738 271 176.05 1,738 278 176.06 1,738 285 176.07 1,738 292 176.08 1,738 299 176.09 1,738 306 176.10 1,738 313 176.11 1,738 320 176.12 1,738 327 176.13 1,738 334 176.14 1,738 341 176.15 1,738 348 176.16 1,738 354 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.17 1,738 361 176.18 1,738 368 176.19 1,738 375 176.20 1,738 382 176.21 1,738 389 176.22 1,738 396 176.23 1,738 403 176.24 1,738 410 176.25 1,738 417 176.26 1,738 424 176.27 1,738 431 176.28 1,738 438 176.29 1,738 445 176.30 1,738 452 176.31 1,738 459 176.32 1,738 466 176.33 1,738 473 176.34 1,738 480 176.35 1,738 487 176.36 1,738 494 176.37 1,738 500 176.38 1,738 507 176.39 1,738 514 176.40 1,738 521 176.41 1,738 535 176.42 1,738 549 176.43 1,738 564 176.44 1,738 578 176.45 1,738 592 176.46 1,738 606 176.47 1,738 620 176.48 1,738 634 176.49 1,738 648 176.50 1,738 662 176.51 1,738 676 176.52 1,738 690 176.53 1,738 704 176.54 1,738 718 176.55 1,738 732 176.56 1,738 746 176.57 1,738 760 176.58 1,738 774 176.59 1,738 788 176.60 1,738 802 176.61 1,738 816 176.62 1,738 830 176.63 1,738 844 176.64 1,738 858 176.65 1,738 872 176.66 1,738 886 176.67 1,738 900 176.68 1,738 914 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 71HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.69 1,738 928 176.70 1,738 942 176.71 1,738 956 176.72 1,738 970 176.73 1,738 984 176.74 1,738 998 176.75 1,738 1,012 176.76 1,738 1,025 176.77 1,738 1,039 176.78 1,738 1,053 176.79 1,738 1,067 176.80 1,738 1,081 176.81 1,738 1,095 176.82 1,738 1,109 176.83 1,738 1,123 176.84 1,738 1,137 176.85 1,738 1,150 176.86 1,738 1,164 176.87 1,738 1,178 176.88 1,738 1,192 176.89 1,738 1,206 176.90 1,738 1,220 176.91 1,738 1,233 176.92 1,738 1,247 176.93 1,738 1,261 176.94 1,738 1,275 176.95 1,738 1,289 176.96 1,738 1,303 176.97 1,738 1,316 176.98 1,738 1,330 176.99 1,738 1,344 177.00 1,738 1,358 177.01 1,738 1,371 177.02 1,738 1,385 177.03 1,738 1,399 177.04 1,738 1,413 177.05 1,738 1,427 177.06 1,738 1,440 177.07 1,738 1,454 177.08 1,738 1,468 177.09 1,738 1,481 177.10 1,738 1,495 177.11 1,738 1,509 177.12 1,738 1,523 177.13 1,738 1,536 177.14 1,738 1,550 177.15 1,738 1,564 177.16 1,738 1,577 177.17 1,738 1,591 177.18 1,738 1,605 177.19 1,738 1,618 177.20 1,738 1,632 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.21 1,738 1,646 177.22 1,738 1,659 177.23 1,738 1,673 177.24 1,738 1,686 177.25 1,738 1,700 177.26 1,738 1,714 177.27 1,738 1,727 177.28 1,738 1,741 177.29 1,738 1,754 177.30 1,738 1,768 177.31 1,738 1,782 177.32 1,738 1,795 177.33 1,738 1,809 177.34 1,738 1,822 177.35 1,738 1,836 177.36 1,738 1,849 177.37 1,738 1,863 177.38 1,738 1,876 177.39 1,738 1,890 177.40 1,738 1,903 177.41 1,738 1,917 177.42 1,738 1,930 177.43 1,738 1,944 177.44 1,738 1,957 177.45 1,738 1,971 177.46 1,738 1,984 177.47 1,738 1,998 177.48 1,738 2,011 177.49 1,738 2,025 177.50 1,738 2,038 177.51 1,738 2,051 177.52 1,738 2,065 177.53 1,738 2,078 177.54 1,738 2,092 177.55 1,738 2,105 177.56 1,738 2,118 177.57 1,738 2,132 177.58 1,738 2,145 177.59 1,738 2,158 177.60 1,738 2,172 177.61 1,738 2,185 177.62 1,738 2,198 177.63 1,738 2,212 177.64 1,738 2,225 177.65 1,738 2,238 177.66 1,738 2,252 177.67 1,738 2,265 177.68 1,738 2,278 177.69 1,738 2,291 177.70 1,738 2,305 177.71 1,738 2,318 177.72 1,738 2,331 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 72HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.73 1,738 2,344 177.74 1,738 2,358 177.75 1,738 2,371 177.76 1,738 2,384 177.77 1,738 2,397 177.78 1,738 2,410 177.79 1,738 2,423 177.80 1,738 2,437 177.81 1,738 2,450 177.82 1,738 2,463 177.83 1,738 2,476 177.84 1,738 2,489 177.85 1,738 2,502 177.86 1,738 2,515 177.87 1,738 2,528 177.88 1,738 2,541 177.89 1,738 2,554 177.90 1,738 2,567 177.91 1,738 2,581 177.92 1,738 2,594 177.93 1,738 2,607 177.94 1,738 2,620 177.95 1,738 2,633 177.96 1,738 2,646 177.97 1,738 2,658 177.98 1,738 2,671 177.99 1,738 2,684 178.00 1,738 2,697 178.01 1,738 2,710 178.02 1,738 2,723 178.03 1,738 2,736 178.04 1,738 2,749 178.05 1,738 2,762 178.06 1,738 2,775 178.07 1,738 2,788 178.08 1,738 2,800 178.09 1,738 2,813 178.10 1,738 2,826 178.11 1,738 2,839 178.12 1,738 2,852 178.13 1,738 2,864 178.14 1,738 2,877 178.15 1,738 2,890 178.16 1,738 2,903 178.17 1,738 2,915 178.18 1,738 2,928 178.19 1,738 2,941 178.20 1,738 2,954 178.21 1,738 2,966 178.22 1,738 2,979 178.23 1,738 2,992 178.24 1,738 3,004 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.25 1,738 3,017 178.26 1,738 3,030 178.27 1,738 3,042 178.28 1,738 3,055 178.29 1,738 3,067 178.30 1,738 3,080 178.31 1,738 3,092 178.32 1,738 3,105 178.33 1,738 3,117 178.34 1,738 3,130 178.35 1,738 3,143 178.36 1,738 3,155 178.37 1,738 3,167 178.38 1,738 3,180 178.39 1,738 3,192 178.40 1,738 3,205 178.41 1,738 3,217 178.42 1,738 3,230 178.43 1,738 3,242 178.44 1,738 3,254 178.45 1,738 3,267 178.46 1,738 3,279 178.47 1,738 3,291 178.48 1,738 3,304 178.49 1,738 3,316 178.50 1,738 3,328 178.51 1,738 3,341 178.52 1,738 3,353 178.53 1,738 3,365 178.54 1,738 3,377 178.55 1,738 3,389 178.56 1,738 3,402 178.57 1,738 3,414 178.58 1,738 3,426 178.59 1,738 3,438 178.60 1,738 3,450 178.61 1,738 3,462 178.62 1,738 3,474 178.63 1,738 3,487 178.64 1,738 3,499 178.65 1,738 3,511 178.66 1,738 3,523 178.67 1,738 3,535 178.68 1,738 3,547 178.69 1,738 3,559 178.70 1,738 3,571 178.71 1,738 3,582 178.72 1,738 3,594 178.73 1,738 3,606 178.74 1,738 3,618 178.75 1,738 3,630 178.76 1,738 3,642 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 73HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.77 1,738 3,654 178.78 1,738 3,665 178.79 1,738 3,677 178.80 1,738 3,689 178.81 1,738 3,701 178.82 1,738 3,713 178.83 1,738 3,724 178.84 1,738 3,736 178.85 1,738 3,748 178.86 1,738 3,759 178.87 1,738 3,771 178.88 1,738 3,783 178.89 1,738 3,794 178.90 1,738 3,806 178.91 1,738 3,817 178.92 1,738 3,829 178.93 1,738 3,840 178.94 1,738 3,852 178.95 1,738 3,863 178.96 1,738 3,875 178.97 1,738 3,886 178.98 1,738 3,898 178.99 1,738 3,909 179.00 1,738 3,920 179.01 1,738 3,932 179.02 1,738 3,943 179.03 1,738 3,954 179.04 1,738 3,965 179.05 1,738 3,977 179.06 1,738 3,988 179.07 1,738 3,999 179.08 1,738 4,010 179.09 1,738 4,022 179.10 1,738 4,033 179.11 1,738 4,044 179.12 1,738 4,055 179.13 1,738 4,066 179.14 1,738 4,077 179.15 1,738 4,088 179.16 1,738 4,099 179.17 1,738 4,110 179.18 1,738 4,121 179.19 1,738 4,132 179.20 1,738 4,143 179.21 1,738 4,154 179.22 1,738 4,164 179.23 1,738 4,175 179.24 1,738 4,186 179.25 1,738 4,197 179.26 1,738 4,207 179.27 1,738 4,218 179.28 1,738 4,229 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.29 1,738 4,239 179.30 1,738 4,250 179.31 1,738 4,261 179.32 1,738 4,271 179.33 1,738 4,282 179.34 1,738 4,292 179.35 1,738 4,303 179.36 1,738 4,313 179.37 1,738 4,323 179.38 1,738 4,334 179.39 1,738 4,344 179.40 1,738 4,354 179.41 1,738 4,365 179.42 1,738 4,375 179.43 1,738 4,385 179.44 1,738 4,395 179.45 1,738 4,405 179.46 1,738 4,416 179.47 1,738 4,426 179.48 1,738 4,436 179.49 1,738 4,446 179.50 1,738 4,456 179.51 1,738 4,466 179.52 1,738 4,475 179.53 1,738 4,485 179.54 1,738 4,495 179.55 1,738 4,505 179.56 1,738 4,514 179.57 1,738 4,524 179.58 1,738 4,534 179.59 1,738 4,543 179.60 1,738 4,553 179.61 1,738 4,562 179.62 1,738 4,572 179.63 1,738 4,581 179.64 1,738 4,591 179.65 1,738 4,600 179.66 1,738 4,609 179.67 1,738 4,618 179.68 1,738 4,627 179.69 1,738 4,636 179.70 1,738 4,645 179.71 1,738 4,654 179.72 1,738 4,663 179.73 1,738 4,672 179.74 1,738 4,680 179.75 1,738 4,689 179.76 1,738 4,698 179.77 1,738 4,706 179.78 1,738 4,714 179.79 1,738 4,723 179.80 1,738 4,731 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 74HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.81 1,738 4,739 179.82 1,738 4,747 179.83 1,738 4,755 179.84 1,738 4,763 179.85 1,738 4,771 179.86 1,738 4,779 179.87 1,738 4,787 179.88 1,738 4,795 179.89 1,738 4,802 179.90 1,738 4,810 179.91 1,738 4,818 179.92 1,738 4,825 179.93 1,738 4,833 179.94 1,738 4,840 179.95 1,738 4,848 179.96 1,738 4,855 179.97 1,738 4,863 179.98 1,738 4,870 179.99 1,738 4,878 180.00 1,738 4,885 180.01 1,738 4,893 180.02 1,738 4,900 180.03 1,738 4,907 180.04 1,738 4,915 180.05 1,738 4,922 180.06 1,738 4,929 180.07 1,738 4,936 180.08 1,738 4,944 180.09 1,738 4,951 180.10 1,738 4,958 180.11 1,738 4,965 180.12 1,738 4,972 180.13 1,738 4,979 180.14 1,738 4,986 180.15 1,738 4,993 180.16 1,738 5,000 180.17 1,738 5,007 180.18 1,738 5,014 180.19 1,738 5,021 180.20 1,738 5,028 180.21 1,738 5,035 180.22 1,738 5,042 180.23 1,738 5,049 180.24 1,738 5,055 180.25 1,738 5,062 180.26 1,738 5,069 180.27 1,738 5,076 180.28 1,738 5,083 180.29 1,738 5,090 180.30 1,738 5,097 180.31 1,738 5,104 180.32 1,738 5,111 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.33 1,738 5,118 180.34 1,738 5,125 180.35 1,738 5,132 180.36 1,738 5,139 180.37 1,738 5,146 180.38 1,738 5,153 180.39 1,738 5,160 180.40 1,738 5,167 180.41 1,738 5,174 180.42 1,738 5,181 180.43 1,738 5,188 180.44 1,738 5,195 180.45 1,738 5,201 180.46 1,738 5,208 180.47 1,738 5,215 180.48 1,738 5,222 180.49 1,738 5,229 180.50 1,738 5,236 180.51 1,738 5,243 180.52 1,738 5,250 180.53 1,738 5,257 180.54 1,738 5,264 180.55 1,738 5,271 180.56 1,738 5,278 180.57 1,738 5,285 180.58 1,738 5,292 180.59 1,738 5,299 180.60 1,738 5,306 180.61 1,738 5,313 180.62 1,738 5,320 180.63 1,738 5,327 180.64 1,738 5,334 180.65 1,738 5,340 180.66 1,738 5,347 180.67 1,738 5,354 180.68 1,738 5,361 180.69 1,738 5,368 180.70 1,738 5,375 180.71 1,738 5,382 180.72 1,738 5,389 180.73 1,738 5,396 180.74 1,738 5,403 180.75 1,738 5,410 180.76 1,738 5,417 180.77 1,738 5,424 180.78 1,738 5,431 180.79 1,738 5,438 180.80 1,738 5,445 180.81 1,738 5,452 180.82 1,738 5,459 180.83 1,738 5,466 180.84 1,738 5,473 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 75HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.85 1,738 5,479 180.86 1,738 5,486 180.87 1,738 5,493 180.88 1,738 5,500 180.89 1,738 5,507 180.90 1,738 5,514 180.91 1,738 5,521 180.92 1,738 5,528 180.93 1,738 5,535 180.94 1,738 5,542 180.95 1,738 5,549 180.96 1,738 5,556 180.97 1,738 5,563 180.98 1,738 5,570 180.99 1,738 5,577 181.00 1,738 5,584 181.01 1,738 5,591 181.02 1,738 5,598 181.03 1,738 5,605 181.04 1,738 5,612 181.05 1,738 5,619 181.06 1,738 5,625 181.07 1,738 5,632 181.08 1,738 5,639 181.09 1,738 5,646 181.10 1,738 5,653 181.11 1,738 5,660 181.12 1,738 5,667 181.13 1,738 5,674 181.14 1,738 5,681 181.15 1,738 5,688 Type III 24-hr 2-Year Rainfall=3.45"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 76HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,968 sf, 21.15% Impervious, Inflow Depth = 0.52" for 2-Year event Inflow = 1.26 cfs @ 12.16 hrs, Volume= 5,242 cf Primary = 1.26 cfs @ 12.16 hrs, Volume= 5,242 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 77HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=16,145 sf 22.38% Impervious Runoff Depth=2.46"Subcatchment DA 1A: DA 1A Tc=10.0 min CN=74 Runoff=0.93 cfs 3,310 cf Runoff Area=16,665 sf 100.00% Impervious Runoff Depth=4.88"Subcatchment DA 1B: DA 1B Tc=5.0 min CN=98 Runoff=1.98 cfs 6,781 cf Runoff Area=47,379 sf 1.50% Impervious Runoff Depth=1.89"Subcatchment DA 1C: DA 1C Tc=10.0 min CN=67 Runoff=2.03 cfs 7,451 cf Runoff Area=10,641 sf 41.23% Impervious Runoff Depth=3.09"Subcatchment DA 1D: DA 1D Tc=5.0 min CN=81 Runoff=0.91 cfs 2,741 cf Runoff Area=29,138 sf 0.00% Impervious Runoff Depth=1.89"Subcatchment DA 1E: DA 1E Flow Length=446' Tc=10.7 min CN=67 Runoff=1.22 cfs 4,582 cf Peak Elev=185.05' Storage=1,132 cf Inflow=0.93 cfs 3,310 cfPond RG-A: Rain Garden A Discarded=0.06 cfs 2,609 cf Primary=0.45 cfs 702 cf Outflow=0.51 cfs 3,310 cf Peak Elev=157.91' Storage=1,349 cf Inflow=0.91 cfs 2,741 cfPond RG-B: Rain Garden B Discarded=0.06 cfs 2,741 cf Primary=0.00 cfs 0 cf Outflow=0.06 cfs 2,741 cf Peak Elev=178.26' Storage=3,032 cf Inflow=1.98 cfs 6,781 cfPond SWB: Stormtech MC 3500 (SWM-B) Discarded=0.10 cfs 6,781 cf Primary=0.00 cfs 0 cf Outflow=0.10 cfs 6,781 cf Inflow=3.24 cfs 12,734 cfLink TSD: Total Site Discharge Primary=3.24 cfs 12,734 cf Total Runoff Area = 119,968 sf Runoff Volume = 24,866 cf Average Runoff Depth = 2.49" 78.85% Pervious = 94,594 sf 21.15% Impervious = 25,374 sf Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 78HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1A: DA 1A Runoff = 0.93 cfs @ 12.14 hrs, Volume= 3,310 cf, Depth= 2.46" Routed to Pond RG-A : Rain Garden A Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 6,492 66 Woods, Poor, HSG B 6,040 69 50-75% Grass cover, Fair, HSG B 3,613 98 Paved parking, HSG B 16,145 74 Weighted Average 12,532 77.62% Pervious Area 3,613 22.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 79HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1B: DA 1B Runoff = 1.98 cfs @ 12.07 hrs, Volume= 6,781 cf, Depth= 4.88" Routed to Pond SWB : Stormtech MC 3500 (SWM-B) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 4,000 98 Roofs, HSG B 12,665 98 Paved parking, HSG B 16,665 98 Weighted Average 16,665 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 80HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1C: DA 1C Runoff = 2.03 cfs @ 12.15 hrs, Volume= 7,451 cf, Depth= 1.89" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 709 98 Paved parking, HSG B 22,996 66 Woods, Poor, HSG B 23,674 67 Brush, Poor, HSG B 47,379 67 Weighted Average 46,670 98.50% Pervious Area 709 1.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 81HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1D: DA 1D Runoff = 0.91 cfs @ 12.07 hrs, Volume= 2,741 cf, Depth= 3.09" Routed to Pond RG-B : Rain Garden B Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 4,387 98 Paved parking, HSG B 6,254 69 50-75% Grass cover, Fair, HSG B 10,641 81 Weighted Average 6,254 58.77% Pervious Area 4,387 41.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 82HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1E: DA 1E Runoff = 1.22 cfs @ 12.16 hrs, Volume= 4,582 cf, Depth= 1.89" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10-Year Rainfall=5.12" Area (sf) CN Description 20,116 66 Woods, Poor, HSG B 9,022 69 50-75% Grass cover, Fair, HSG B 29,138 67 Weighted Average 29,138 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.7 100 0.2400 0.22 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 3.0 346 0.0750 1.92 Shallow Concentrated Flow, SHALLOW Short Grass Pasture Kv= 7.0 fps 10.7 446 Total Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 83HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-A: Rain Garden A Inflow Area = 16,145 sf, 22.38% Impervious, Inflow Depth = 2.46" for 10-Year event Inflow = 0.93 cfs @ 12.14 hrs, Volume= 3,310 cf Outflow = 0.51 cfs @ 12.36 hrs, Volume= 3,310 cf, Atten= 46%, Lag= 12.9 min Discarded = 0.06 cfs @ 12.36 hrs, Volume= 2,609 cf Primary = 0.45 cfs @ 12.36 hrs, Volume= 702 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 185.05' @ 12.36 hrs Surf.Area= 1,038 sf Storage= 1,132 cf Plug-Flow detention time= 201.5 min calculated for 3,309 cf (100% of inflow) Center-of-Mass det. time= 201.6 min ( 1,041.6 - 840.0 ) Volume Invert Avail.Storage Storage Description #1 183.00' 1,404 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 183.00 143 0 0 184.00 501 322 322 185.00 1,011 756 1,078 185.30 1,164 326 1,404 Device Routing Invert Outlet Devices #1 Primary 185.00'15.0' long x 3.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.41 2.56 2.69 2.67 2.66 2.66 2.65 2.67 2.67 2.70 2.77 2.83 2.87 2.93 3.10 3.19 3.32 #2 Discarded 183.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 12.36 hrs HW=185.05' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=0.44 cfs @ 12.36 hrs HW=185.05' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.44 cfs @ 0.55 fps) Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 84HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.00 0.00 0.00 0.00 183.01 0.01 0.01 0.00 183.02 0.01 0.01 0.00 183.03 0.01 0.01 0.00 183.04 0.01 0.01 0.00 183.05 0.01 0.01 0.00 183.06 0.01 0.01 0.00 183.07 0.01 0.01 0.00 183.08 0.01 0.01 0.00 183.09 0.01 0.01 0.00 183.10 0.01 0.01 0.00 183.11 0.01 0.01 0.00 183.12 0.01 0.01 0.00 183.13 0.01 0.01 0.00 183.14 0.01 0.01 0.00 183.15 0.01 0.01 0.00 183.16 0.01 0.01 0.00 183.17 0.01 0.01 0.00 183.18 0.01 0.01 0.00 183.19 0.01 0.01 0.00 183.20 0.01 0.01 0.00 183.21 0.01 0.01 0.00 183.22 0.01 0.01 0.00 183.23 0.01 0.01 0.00 183.24 0.01 0.01 0.00 183.25 0.01 0.01 0.00 183.26 0.01 0.01 0.00 183.27 0.01 0.01 0.00 183.28 0.01 0.01 0.00 183.29 0.01 0.01 0.00 183.30 0.01 0.01 0.00 183.31 0.01 0.01 0.00 183.32 0.01 0.01 0.00 183.33 0.01 0.01 0.00 183.34 0.01 0.01 0.00 183.35 0.01 0.01 0.00 183.36 0.02 0.02 0.00 183.37 0.02 0.02 0.00 183.38 0.02 0.02 0.00 183.39 0.02 0.02 0.00 183.40 0.02 0.02 0.00 183.41 0.02 0.02 0.00 183.42 0.02 0.02 0.00 183.43 0.02 0.02 0.00 183.44 0.02 0.02 0.00 183.45 0.02 0.02 0.00 183.46 0.02 0.02 0.00 183.47 0.02 0.02 0.00 183.48 0.02 0.02 0.00 183.49 0.02 0.02 0.00 183.50 0.02 0.02 0.00 183.51 0.02 0.02 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.52 0.02 0.02 0.00 183.53 0.02 0.02 0.00 183.54 0.02 0.02 0.00 183.55 0.02 0.02 0.00 183.56 0.02 0.02 0.00 183.57 0.02 0.02 0.00 183.58 0.02 0.02 0.00 183.59 0.02 0.02 0.00 183.60 0.02 0.02 0.00 183.61 0.02 0.02 0.00 183.62 0.02 0.02 0.00 183.63 0.02 0.02 0.00 183.64 0.02 0.02 0.00 183.65 0.02 0.02 0.00 183.66 0.02 0.02 0.00 183.67 0.02 0.02 0.00 183.68 0.02 0.02 0.00 183.69 0.02 0.02 0.00 183.70 0.02 0.02 0.00 183.71 0.02 0.02 0.00 183.72 0.02 0.02 0.00 183.73 0.02 0.02 0.00 183.74 0.02 0.02 0.00 183.75 0.02 0.02 0.00 183.76 0.02 0.02 0.00 183.77 0.02 0.02 0.00 183.78 0.02 0.02 0.00 183.79 0.02 0.02 0.00 183.80 0.02 0.02 0.00 183.81 0.02 0.02 0.00 183.82 0.02 0.02 0.00 183.83 0.02 0.02 0.00 183.84 0.02 0.02 0.00 183.85 0.02 0.02 0.00 183.86 0.03 0.03 0.00 183.87 0.03 0.03 0.00 183.88 0.03 0.03 0.00 183.89 0.03 0.03 0.00 183.90 0.03 0.03 0.00 183.91 0.03 0.03 0.00 183.92 0.03 0.03 0.00 183.93 0.03 0.03 0.00 183.94 0.03 0.03 0.00 183.95 0.03 0.03 0.00 183.96 0.03 0.03 0.00 183.97 0.03 0.03 0.00 183.98 0.03 0.03 0.00 183.99 0.03 0.03 0.00 184.00 0.03 0.03 0.00 184.01 0.03 0.03 0.00 184.02 0.03 0.03 0.00 184.03 0.03 0.03 0.00 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 85HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.04 0.03 0.03 0.00 184.05 0.03 0.03 0.00 184.06 0.03 0.03 0.00 184.07 0.03 0.03 0.00 184.08 0.03 0.03 0.00 184.09 0.03 0.03 0.00 184.10 0.03 0.03 0.00 184.11 0.03 0.03 0.00 184.12 0.03 0.03 0.00 184.13 0.03 0.03 0.00 184.14 0.03 0.03 0.00 184.15 0.03 0.03 0.00 184.16 0.03 0.03 0.00 184.17 0.03 0.03 0.00 184.18 0.03 0.03 0.00 184.19 0.03 0.03 0.00 184.20 0.03 0.03 0.00 184.21 0.03 0.03 0.00 184.22 0.03 0.03 0.00 184.23 0.03 0.03 0.00 184.24 0.03 0.03 0.00 184.25 0.03 0.03 0.00 184.26 0.04 0.04 0.00 184.27 0.04 0.04 0.00 184.28 0.04 0.04 0.00 184.29 0.04 0.04 0.00 184.30 0.04 0.04 0.00 184.31 0.04 0.04 0.00 184.32 0.04 0.04 0.00 184.33 0.04 0.04 0.00 184.34 0.04 0.04 0.00 184.35 0.04 0.04 0.00 184.36 0.04 0.04 0.00 184.37 0.04 0.04 0.00 184.38 0.04 0.04 0.00 184.39 0.04 0.04 0.00 184.40 0.04 0.04 0.00 184.41 0.04 0.04 0.00 184.42 0.04 0.04 0.00 184.43 0.04 0.04 0.00 184.44 0.04 0.04 0.00 184.45 0.04 0.04 0.00 184.46 0.04 0.04 0.00 184.47 0.04 0.04 0.00 184.48 0.04 0.04 0.00 184.49 0.04 0.04 0.00 184.50 0.04 0.04 0.00 184.51 0.04 0.04 0.00 184.52 0.04 0.04 0.00 184.53 0.04 0.04 0.00 184.54 0.04 0.04 0.00 184.55 0.04 0.04 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.56 0.04 0.04 0.00 184.57 0.04 0.04 0.00 184.58 0.04 0.04 0.00 184.59 0.04 0.04 0.00 184.60 0.04 0.04 0.00 184.61 0.05 0.05 0.00 184.62 0.05 0.05 0.00 184.63 0.05 0.05 0.00 184.64 0.05 0.05 0.00 184.65 0.05 0.05 0.00 184.66 0.05 0.05 0.00 184.67 0.05 0.05 0.00 184.68 0.05 0.05 0.00 184.69 0.05 0.05 0.00 184.70 0.05 0.05 0.00 184.71 0.05 0.05 0.00 184.72 0.05 0.05 0.00 184.73 0.05 0.05 0.00 184.74 0.05 0.05 0.00 184.75 0.05 0.05 0.00 184.76 0.05 0.05 0.00 184.77 0.05 0.05 0.00 184.78 0.05 0.05 0.00 184.79 0.05 0.05 0.00 184.80 0.05 0.05 0.00 184.81 0.05 0.05 0.00 184.82 0.05 0.05 0.00 184.83 0.05 0.05 0.00 184.84 0.05 0.05 0.00 184.85 0.05 0.05 0.00 184.86 0.05 0.05 0.00 184.87 0.05 0.05 0.00 184.88 0.05 0.05 0.00 184.89 0.05 0.05 0.00 184.90 0.05 0.05 0.00 184.91 0.05 0.05 0.00 184.92 0.05 0.05 0.00 184.93 0.05 0.05 0.00 184.94 0.05 0.05 0.00 184.95 0.05 0.05 0.00 184.96 0.06 0.06 0.00 184.97 0.06 0.06 0.00 184.98 0.06 0.06 0.00 184.99 0.06 0.06 0.00 185.00 0.06 0.06 0.00 185.01 0.09 0.06 0.04 185.02 0.16 0.06 0.10 185.03 0.24 0.06 0.19 185.04 0.35 0.06 0.29 185.05 0.46 0.06 0.40 185.06 0.59 0.06 0.53 185.07 0.73 0.06 0.67 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 86HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 185.08 0.88 0.06 0.82 185.09 1.03 0.06 0.98 185.10 1.20 0.06 1.14 185.11 1.38 0.06 1.32 185.12 1.56 0.06 1.50 185.13 1.75 0.06 1.69 185.14 1.95 0.06 1.89 185.15 2.16 0.06 2.10 185.16 2.37 0.06 2.31 185.17 2.59 0.06 2.53 185.18 2.82 0.06 2.76 185.19 3.06 0.06 2.99 185.20 3.30 0.06 3.23 185.21 3.55 0.06 3.49 185.22 3.82 0.06 3.75 185.23 4.09 0.06 4.02 185.24 4.37 0.06 4.30 185.25 4.65 0.06 4.59 185.26 4.95 0.06 4.88 185.27 5.25 0.06 5.18 185.28 5.55 0.06 5.49 185.29 5.87 0.06 5.80 185.30 6.19 0.06 6.12 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 87HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.00 143 0 183.01 147 1 183.02 150 3 183.03 154 4 183.04 157 6 183.05 161 8 183.06 164 9 183.07 168 11 183.08 172 13 183.09 175 14 183.10 179 16 183.11 182 18 183.12 186 20 183.13 190 22 183.14 193 24 183.15 197 25 183.16 200 27 183.17 204 29 183.18 207 32 183.19 211 34 183.20 215 36 183.21 218 38 183.22 222 40 183.23 225 42 183.24 229 45 183.25 233 47 183.26 236 49 183.27 240 52 183.28 243 54 183.29 247 57 183.30 250 59 183.31 254 62 183.32 258 64 183.33 261 67 183.34 265 69 183.35 268 72 183.36 272 75 183.37 275 77 183.38 279 80 183.39 283 83 183.40 286 86 183.41 290 89 183.42 293 92 183.43 297 95 183.44 301 98 183.45 304 101 183.46 308 104 183.47 311 107 183.48 315 110 183.49 318 113 183.50 322 116 183.51 326 119 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.52 329 123 183.53 333 126 183.54 336 129 183.55 340 133 183.56 343 136 183.57 347 140 183.58 351 143 183.59 354 147 183.60 358 150 183.61 361 154 183.62 365 157 183.63 369 161 183.64 372 165 183.65 376 169 183.66 379 172 183.67 383 176 183.68 386 180 183.69 390 184 183.70 394 188 183.71 397 192 183.72 401 196 183.73 404 200 183.74 408 204 183.75 412 208 183.76 415 212 183.77 419 216 183.78 422 220 183.79 426 225 183.80 429 229 183.81 433 233 183.82 437 238 183.83 440 242 183.84 444 246 183.85 447 251 183.86 451 255 183.87 454 260 183.88 458 264 183.89 462 269 183.90 465 274 183.91 469 278 183.92 472 283 183.93 476 288 183.94 480 293 183.95 483 297 183.96 487 302 183.97 490 307 183.98 494 312 183.99 497 317 184.00 501 322 184.01 506 327 184.02 511 332 184.03 516 337 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 88HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.04 521 342 184.05 527 348 184.06 532 353 184.07 537 358 184.08 542 364 184.09 547 369 184.10 552 375 184.11 557 380 184.12 562 386 184.13 567 391 184.14 572 397 184.15 578 403 184.16 583 409 184.17 588 415 184.18 593 420 184.19 598 426 184.20 603 432 184.21 608 438 184.22 613 445 184.23 618 451 184.24 623 457 184.25 629 463 184.26 634 469 184.27 639 476 184.28 644 482 184.29 649 489 184.30 654 495 184.31 659 502 184.32 664 508 184.33 669 515 184.34 674 522 184.35 679 529 184.36 685 535 184.37 690 542 184.38 695 549 184.39 700 556 184.40 705 563 184.41 710 570 184.42 715 577 184.43 720 585 184.44 725 592 184.45 730 599 184.46 736 606 184.47 741 614 184.48 746 621 184.49 751 629 184.50 756 636 184.51 761 644 184.52 766 651 184.53 771 659 184.54 776 667 184.55 782 675 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.56 787 683 184.57 792 690 184.58 797 698 184.59 802 706 184.60 807 714 184.61 812 722 184.62 817 731 184.63 822 739 184.64 827 747 184.65 833 755 184.66 838 764 184.67 843 772 184.68 848 781 184.69 853 789 184.70 858 798 184.71 863 806 184.72 868 815 184.73 873 824 184.74 878 832 184.75 884 841 184.76 889 850 184.77 894 859 184.78 899 868 184.79 904 877 184.80 909 886 184.81 914 895 184.82 919 904 184.83 924 913 184.84 929 923 184.85 934 932 184.86 940 941 184.87 945 951 184.88 950 960 184.89 955 970 184.90 960 979 184.91 965 989 184.92 970 999 184.93 975 1,008 184.94 980 1,018 184.95 985 1,028 184.96 991 1,038 184.97 996 1,048 184.98 1,001 1,058 184.99 1,006 1,068 185.00 1,011 1,078 185.01 1,016 1,088 185.02 1,021 1,098 185.03 1,026 1,109 185.04 1,031 1,119 185.05 1,037 1,129 185.06 1,042 1,140 185.07 1,047 1,150 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 89HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 185.08 1,052 1,161 185.09 1,057 1,171 185.10 1,062 1,182 185.11 1,067 1,192 185.12 1,072 1,203 185.13 1,077 1,214 185.14 1,082 1,225 185.15 1,088 1,235 185.16 1,093 1,246 185.17 1,098 1,257 185.18 1,103 1,268 185.19 1,108 1,279 185.20 1,113 1,290 185.21 1,118 1,302 185.22 1,123 1,313 185.23 1,128 1,324 185.24 1,133 1,335 185.25 1,138 1,347 185.26 1,144 1,358 185.27 1,149 1,370 185.28 1,154 1,381 185.29 1,159 1,393 185.30 1,164 1,404 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 90HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-B: Rain Garden B Inflow Area = 10,641 sf, 41.23% Impervious, Inflow Depth = 3.09" for 10-Year event Inflow = 0.91 cfs @ 12.07 hrs, Volume= 2,741 cf Outflow = 0.06 cfs @ 13.94 hrs, Volume= 2,741 cf, Atten= 94%, Lag= 111.7 min Discarded = 0.06 cfs @ 13.94 hrs, Volume= 2,741 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 157.91' @ 13.94 hrs Surf.Area= 1,007 sf Storage= 1,349 cf Plug-Flow detention time= 274.5 min calculated for 2,741 cf (100% of inflow) Center-of-Mass det. time= 274.4 min ( 1,091.6 - 817.1 ) Volume Invert Avail.Storage Storage Description #1 156.00' 1,767 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 156.00 437 0 0 157.00 704 571 571 158.00 1,037 871 1,441 158.30 1,135 326 1,767 Device Routing Invert Outlet Devices #1 Primary 158.00'15.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 156.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 13.94 hrs HW=157.91' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=156.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 91HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.00 0.00 0.00 0.00 156.01 0.02 0.02 0.00 156.02 0.02 0.02 0.00 156.03 0.02 0.02 0.00 156.04 0.02 0.02 0.00 156.05 0.03 0.03 0.00 156.06 0.03 0.03 0.00 156.07 0.03 0.03 0.00 156.08 0.03 0.03 0.00 156.09 0.03 0.03 0.00 156.10 0.03 0.03 0.00 156.11 0.03 0.03 0.00 156.12 0.03 0.03 0.00 156.13 0.03 0.03 0.00 156.14 0.03 0.03 0.00 156.15 0.03 0.03 0.00 156.16 0.03 0.03 0.00 156.17 0.03 0.03 0.00 156.18 0.03 0.03 0.00 156.19 0.03 0.03 0.00 156.20 0.03 0.03 0.00 156.21 0.03 0.03 0.00 156.22 0.03 0.03 0.00 156.23 0.03 0.03 0.00 156.24 0.03 0.03 0.00 156.25 0.03 0.03 0.00 156.26 0.03 0.03 0.00 156.27 0.03 0.03 0.00 156.28 0.03 0.03 0.00 156.29 0.03 0.03 0.00 156.30 0.03 0.03 0.00 156.31 0.03 0.03 0.00 156.32 0.03 0.03 0.00 156.33 0.03 0.03 0.00 156.34 0.03 0.03 0.00 156.35 0.03 0.03 0.00 156.36 0.03 0.03 0.00 156.37 0.03 0.03 0.00 156.38 0.03 0.03 0.00 156.39 0.03 0.03 0.00 156.40 0.03 0.03 0.00 156.41 0.03 0.03 0.00 156.42 0.03 0.03 0.00 156.43 0.03 0.03 0.00 156.44 0.03 0.03 0.00 156.45 0.03 0.03 0.00 156.46 0.03 0.03 0.00 156.47 0.03 0.03 0.00 156.48 0.03 0.03 0.00 156.49 0.03 0.03 0.00 156.50 0.03 0.03 0.00 156.51 0.03 0.03 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.52 0.03 0.03 0.00 156.53 0.03 0.03 0.00 156.54 0.03 0.03 0.00 156.55 0.03 0.03 0.00 156.56 0.03 0.03 0.00 156.57 0.03 0.03 0.00 156.58 0.03 0.03 0.00 156.59 0.03 0.03 0.00 156.60 0.03 0.03 0.00 156.61 0.03 0.03 0.00 156.62 0.03 0.03 0.00 156.63 0.03 0.03 0.00 156.64 0.03 0.03 0.00 156.65 0.03 0.03 0.00 156.66 0.03 0.03 0.00 156.67 0.03 0.03 0.00 156.68 0.03 0.03 0.00 156.69 0.03 0.03 0.00 156.70 0.03 0.03 0.00 156.71 0.03 0.03 0.00 156.72 0.03 0.03 0.00 156.73 0.04 0.04 0.00 156.74 0.04 0.04 0.00 156.75 0.04 0.04 0.00 156.76 0.04 0.04 0.00 156.77 0.04 0.04 0.00 156.78 0.04 0.04 0.00 156.79 0.04 0.04 0.00 156.80 0.04 0.04 0.00 156.81 0.04 0.04 0.00 156.82 0.04 0.04 0.00 156.83 0.04 0.04 0.00 156.84 0.04 0.04 0.00 156.85 0.04 0.04 0.00 156.86 0.04 0.04 0.00 156.87 0.04 0.04 0.00 156.88 0.04 0.04 0.00 156.89 0.04 0.04 0.00 156.90 0.04 0.04 0.00 156.91 0.04 0.04 0.00 156.92 0.04 0.04 0.00 156.93 0.04 0.04 0.00 156.94 0.04 0.04 0.00 156.95 0.04 0.04 0.00 156.96 0.04 0.04 0.00 156.97 0.04 0.04 0.00 156.98 0.04 0.04 0.00 156.99 0.04 0.04 0.00 157.00 0.04 0.04 0.00 157.01 0.04 0.04 0.00 157.02 0.04 0.04 0.00 157.03 0.04 0.04 0.00 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 92HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.04 0.04 0.04 0.00 157.05 0.04 0.04 0.00 157.06 0.04 0.04 0.00 157.07 0.04 0.04 0.00 157.08 0.04 0.04 0.00 157.09 0.04 0.04 0.00 157.10 0.04 0.04 0.00 157.11 0.04 0.04 0.00 157.12 0.04 0.04 0.00 157.13 0.04 0.04 0.00 157.14 0.04 0.04 0.00 157.15 0.04 0.04 0.00 157.16 0.04 0.04 0.00 157.17 0.04 0.04 0.00 157.18 0.04 0.04 0.00 157.19 0.04 0.04 0.00 157.20 0.04 0.04 0.00 157.21 0.04 0.04 0.00 157.22 0.04 0.04 0.00 157.23 0.04 0.04 0.00 157.24 0.04 0.04 0.00 157.25 0.04 0.04 0.00 157.26 0.04 0.04 0.00 157.27 0.04 0.04 0.00 157.28 0.04 0.04 0.00 157.29 0.04 0.04 0.00 157.30 0.04 0.04 0.00 157.31 0.04 0.04 0.00 157.32 0.05 0.05 0.00 157.33 0.05 0.05 0.00 157.34 0.05 0.05 0.00 157.35 0.05 0.05 0.00 157.36 0.05 0.05 0.00 157.37 0.05 0.05 0.00 157.38 0.05 0.05 0.00 157.39 0.05 0.05 0.00 157.40 0.05 0.05 0.00 157.41 0.05 0.05 0.00 157.42 0.05 0.05 0.00 157.43 0.05 0.05 0.00 157.44 0.05 0.05 0.00 157.45 0.05 0.05 0.00 157.46 0.05 0.05 0.00 157.47 0.05 0.05 0.00 157.48 0.05 0.05 0.00 157.49 0.05 0.05 0.00 157.50 0.05 0.05 0.00 157.51 0.05 0.05 0.00 157.52 0.05 0.05 0.00 157.53 0.05 0.05 0.00 157.54 0.05 0.05 0.00 157.55 0.05 0.05 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.56 0.05 0.05 0.00 157.57 0.05 0.05 0.00 157.58 0.05 0.05 0.00 157.59 0.05 0.05 0.00 157.60 0.05 0.05 0.00 157.61 0.05 0.05 0.00 157.62 0.05 0.05 0.00 157.63 0.05 0.05 0.00 157.64 0.05 0.05 0.00 157.65 0.05 0.05 0.00 157.66 0.05 0.05 0.00 157.67 0.05 0.05 0.00 157.68 0.05 0.05 0.00 157.69 0.05 0.05 0.00 157.70 0.05 0.05 0.00 157.71 0.05 0.05 0.00 157.72 0.05 0.05 0.00 157.73 0.05 0.05 0.00 157.74 0.05 0.05 0.00 157.75 0.05 0.05 0.00 157.76 0.05 0.05 0.00 157.77 0.05 0.05 0.00 157.78 0.05 0.05 0.00 157.79 0.05 0.05 0.00 157.80 0.05 0.05 0.00 157.81 0.05 0.05 0.00 157.82 0.05 0.05 0.00 157.83 0.05 0.05 0.00 157.84 0.05 0.05 0.00 157.85 0.05 0.05 0.00 157.86 0.06 0.06 0.00 157.87 0.06 0.06 0.00 157.88 0.06 0.06 0.00 157.89 0.06 0.06 0.00 157.90 0.06 0.06 0.00 157.91 0.06 0.06 0.00 157.92 0.06 0.06 0.00 157.93 0.06 0.06 0.00 157.94 0.06 0.06 0.00 157.95 0.06 0.06 0.00 157.96 0.06 0.06 0.00 157.97 0.06 0.06 0.00 157.98 0.06 0.06 0.00 157.99 0.06 0.06 0.00 158.00 0.06 0.06 0.00 158.01 0.09 0.06 0.04 158.02 0.16 0.06 0.10 158.03 0.24 0.06 0.19 158.04 0.34 0.06 0.29 158.05 0.46 0.06 0.40 158.06 0.58 0.06 0.52 158.07 0.72 0.06 0.66 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 93HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 158.08 0.87 0.06 0.81 158.09 1.02 0.06 0.96 158.10 1.19 0.06 1.13 158.11 1.36 0.06 1.30 158.12 1.54 0.06 1.48 158.13 1.73 0.06 1.67 158.14 1.93 0.06 1.87 158.15 2.13 0.06 2.07 158.16 2.35 0.06 2.28 158.17 2.56 0.06 2.50 158.18 2.79 0.06 2.73 158.19 3.02 0.06 2.96 158.20 3.25 0.06 3.19 158.21 3.51 0.06 3.45 158.22 3.77 0.06 3.71 158.23 4.04 0.06 3.98 158.24 4.32 0.06 4.25 158.25 4.60 0.06 4.54 158.26 4.89 0.06 4.83 158.27 5.19 0.06 5.13 158.28 5.49 0.06 5.43 158.29 5.81 0.06 5.74 158.30 6.13 0.06 6.06 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 94HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.00 437 0 156.01 440 4 156.02 442 9 156.03 445 13 156.04 448 18 156.05 450 22 156.06 453 27 156.07 456 31 156.08 458 36 156.09 461 40 156.10 464 45 156.11 466 50 156.12 469 54 156.13 472 59 156.14 474 64 156.15 477 69 156.16 480 73 156.17 482 78 156.18 485 83 156.19 488 88 156.20 490 93 156.21 493 98 156.22 496 103 156.23 498 108 156.24 501 113 156.25 504 118 156.26 506 123 156.27 509 128 156.28 512 133 156.29 514 138 156.30 517 143 156.31 520 148 156.32 522 154 156.33 525 159 156.34 528 164 156.35 530 169 156.36 533 175 156.37 536 180 156.38 538 185 156.39 541 191 156.40 544 196 156.41 546 202 156.42 549 207 156.43 552 213 156.44 554 218 156.45 557 224 156.46 560 229 156.47 562 235 156.48 565 241 156.49 568 246 156.50 571 252 156.51 573 258 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.52 576 263 156.53 579 269 156.54 581 275 156.55 584 281 156.56 587 287 156.57 589 292 156.58 592 298 156.59 595 304 156.60 597 310 156.61 600 316 156.62 603 322 156.63 605 328 156.64 608 334 156.65 611 340 156.66 613 347 156.67 616 353 156.68 619 359 156.69 621 365 156.70 624 371 156.71 627 378 156.72 629 384 156.73 632 390 156.74 635 396 156.75 637 403 156.76 640 409 156.77 643 416 156.78 645 422 156.79 648 429 156.80 651 435 156.81 653 442 156.82 656 448 156.83 659 455 156.84 661 461 156.85 664 468 156.86 667 475 156.87 669 481 156.88 672 488 156.89 675 495 156.90 677 501 156.91 680 508 156.92 683 515 156.93 685 522 156.94 688 529 156.95 691 536 156.96 693 543 156.97 696 550 156.98 699 556 156.99 701 563 157.00 704 571 157.01 707 578 157.02 711 585 157.03 714 592 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 95HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.04 717 599 157.05 721 606 157.06 724 613 157.07 727 621 157.08 731 628 157.09 734 635 157.10 737 643 157.11 741 650 157.12 744 657 157.13 747 665 157.14 751 672 157.15 754 680 157.16 757 687 157.17 761 695 157.18 764 703 157.19 767 710 157.20 771 718 157.21 774 726 157.22 777 733 157.23 781 741 157.24 784 749 157.25 787 757 157.26 791 765 157.27 794 773 157.28 797 781 157.29 801 789 157.30 804 797 157.31 807 805 157.32 811 813 157.33 814 821 157.34 817 829 157.35 821 837 157.36 824 846 157.37 827 854 157.38 831 862 157.39 834 870 157.40 837 879 157.41 841 887 157.42 844 896 157.43 847 904 157.44 851 912 157.45 854 921 157.46 857 930 157.47 861 938 157.48 864 947 157.49 867 955 157.50 871 964 157.51 874 973 157.52 877 982 157.53 880 990 157.54 884 999 157.55 887 1,008 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.56 890 1,017 157.57 894 1,026 157.58 897 1,035 157.59 900 1,044 157.60 904 1,053 157.61 907 1,062 157.62 910 1,071 157.63 914 1,080 157.64 917 1,089 157.65 920 1,098 157.66 924 1,108 157.67 927 1,117 157.68 930 1,126 157.69 934 1,136 157.70 937 1,145 157.71 940 1,154 157.72 944 1,164 157.73 947 1,173 157.74 950 1,183 157.75 954 1,192 157.76 957 1,202 157.77 960 1,211 157.78 964 1,221 157.79 967 1,231 157.80 970 1,240 157.81 974 1,250 157.82 977 1,260 157.83 980 1,270 157.84 984 1,279 157.85 987 1,289 157.86 990 1,299 157.87 994 1,309 157.88 997 1,319 157.89 1,000 1,329 157.90 1,004 1,339 157.91 1,007 1,349 157.92 1,010 1,359 157.93 1,014 1,369 157.94 1,017 1,379 157.95 1,020 1,390 157.96 1,024 1,400 157.97 1,027 1,410 157.98 1,030 1,420 157.99 1,034 1,431 158.00 1,037 1,441 158.01 1,040 1,451 158.02 1,044 1,462 158.03 1,047 1,472 158.04 1,050 1,483 158.05 1,053 1,493 158.06 1,057 1,504 158.07 1,060 1,514 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 96HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 158.08 1,063 1,525 158.09 1,066 1,536 158.10 1,070 1,546 158.11 1,073 1,557 158.12 1,076 1,568 158.13 1,079 1,579 158.14 1,083 1,589 158.15 1,086 1,600 158.16 1,089 1,611 158.17 1,093 1,622 158.18 1,096 1,633 158.19 1,099 1,644 158.20 1,102 1,655 158.21 1,106 1,666 158.22 1,109 1,677 158.23 1,112 1,688 158.24 1,115 1,699 158.25 1,119 1,710 158.26 1,122 1,722 158.27 1,125 1,733 158.28 1,128 1,744 158.29 1,132 1,755 158.30 1,135 1,767 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 97HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond SWB: Stormtech MC 3500 (SWM-B) Inflow Area = 16,665 sf,100.00% Impervious, Inflow Depth = 4.88" for 10-Year event Inflow = 1.98 cfs @ 12.07 hrs, Volume= 6,781 cf Outflow = 0.10 cfs @ 10.24 hrs, Volume= 6,781 cf, Atten= 95%, Lag= 0.0 min Discarded = 0.10 cfs @ 10.24 hrs, Volume= 6,781 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 178.26' @ 14.09 hrs Surf.Area= 1,738 sf Storage= 3,032 cf Plug-Flow detention time= 256.5 min calculated for 6,781 cf (100% of inflow) Center-of-Mass det. time= 256.5 min ( 1,003.2 - 746.7 ) Volume Invert Avail.Storage Storage Description #1A 175.65' 2,580 cf 8.42'W x 206.46'L x 5.50'H Field A 9,557 cf Overall - 3,108 cf Embedded = 6,449 cf x 40.0% Voids #2A 176.40' 3,108 cf ADS_StormTech MC-3500 d +Cap x 28 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 5,688 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 175.65'15.0" Round Outlet Pipe L= 45.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 175.65' / 166.00' S= 0.2144 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf #2 Device 1 179.00'6.0" Vert. Low Flow Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 180.25'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 #4 Discarded 175.65'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 10.24 hrs HW=175.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=175.65' (Free Discharge) 1=Outlet Pipe ( Controls 0.00 cfs) 2=Low Flow Orifice ( Controls 0.00 cfs) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 98HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pond SWB: Stormtech MC 3500 (SWM-B) - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 28 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 204.46' Row Length +12.0" End Stone x 2 = 206.46' Base Length 1 Rows x 77.0" Wide + 12.0" Side Stone x 2 = 8.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 12.0" Stone Cover = 5.50' Field Height 28 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 1 Rows = 3,108.5 cf Chamber Storage 9,557.4 cf Field - 3,108.5 cf Chambers = 6,448.9 cf Stone x 40.0% Voids = 2,579.6 cf Stone Storage Chamber Storage + Stone Storage = 5,688.0 cf = 0.131 af Overall Storage Efficiency = 59.5% Overall System Size = 206.46' x 8.42' x 5.50' 28 Chambers 354.0 cy Field 238.8 cy Stone Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 99HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 175.65 0.00 0.00 0.00 175.66 0.10 0.10 0.00 175.67 0.10 0.10 0.00 175.68 0.10 0.10 0.00 175.69 0.10 0.10 0.00 175.70 0.10 0.10 0.00 175.71 0.10 0.10 0.00 175.72 0.10 0.10 0.00 175.73 0.10 0.10 0.00 175.74 0.10 0.10 0.00 175.75 0.10 0.10 0.00 175.76 0.10 0.10 0.00 175.77 0.10 0.10 0.00 175.78 0.10 0.10 0.00 175.79 0.10 0.10 0.00 175.80 0.10 0.10 0.00 175.81 0.10 0.10 0.00 175.82 0.10 0.10 0.00 175.83 0.10 0.10 0.00 175.84 0.10 0.10 0.00 175.85 0.10 0.10 0.00 175.86 0.10 0.10 0.00 175.87 0.10 0.10 0.00 175.88 0.10 0.10 0.00 175.89 0.10 0.10 0.00 175.90 0.10 0.10 0.00 175.91 0.10 0.10 0.00 175.92 0.10 0.10 0.00 175.93 0.10 0.10 0.00 175.94 0.10 0.10 0.00 175.95 0.10 0.10 0.00 175.96 0.10 0.10 0.00 175.97 0.10 0.10 0.00 175.98 0.10 0.10 0.00 175.99 0.10 0.10 0.00 176.00 0.10 0.10 0.00 176.01 0.10 0.10 0.00 176.02 0.10 0.10 0.00 176.03 0.10 0.10 0.00 176.04 0.10 0.10 0.00 176.05 0.10 0.10 0.00 176.06 0.10 0.10 0.00 176.07 0.10 0.10 0.00 176.08 0.10 0.10 0.00 176.09 0.10 0.10 0.00 176.10 0.10 0.10 0.00 176.11 0.10 0.10 0.00 176.12 0.10 0.10 0.00 176.13 0.10 0.10 0.00 176.14 0.10 0.10 0.00 176.15 0.10 0.10 0.00 176.16 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.17 0.10 0.10 0.00 176.18 0.10 0.10 0.00 176.19 0.10 0.10 0.00 176.20 0.10 0.10 0.00 176.21 0.10 0.10 0.00 176.22 0.10 0.10 0.00 176.23 0.10 0.10 0.00 176.24 0.10 0.10 0.00 176.25 0.10 0.10 0.00 176.26 0.10 0.10 0.00 176.27 0.10 0.10 0.00 176.28 0.10 0.10 0.00 176.29 0.10 0.10 0.00 176.30 0.10 0.10 0.00 176.31 0.10 0.10 0.00 176.32 0.10 0.10 0.00 176.33 0.10 0.10 0.00 176.34 0.10 0.10 0.00 176.35 0.10 0.10 0.00 176.36 0.10 0.10 0.00 176.37 0.10 0.10 0.00 176.38 0.10 0.10 0.00 176.39 0.10 0.10 0.00 176.40 0.10 0.10 0.00 176.41 0.10 0.10 0.00 176.42 0.10 0.10 0.00 176.43 0.10 0.10 0.00 176.44 0.10 0.10 0.00 176.45 0.10 0.10 0.00 176.46 0.10 0.10 0.00 176.47 0.10 0.10 0.00 176.48 0.10 0.10 0.00 176.49 0.10 0.10 0.00 176.50 0.10 0.10 0.00 176.51 0.10 0.10 0.00 176.52 0.10 0.10 0.00 176.53 0.10 0.10 0.00 176.54 0.10 0.10 0.00 176.55 0.10 0.10 0.00 176.56 0.10 0.10 0.00 176.57 0.10 0.10 0.00 176.58 0.10 0.10 0.00 176.59 0.10 0.10 0.00 176.60 0.10 0.10 0.00 176.61 0.10 0.10 0.00 176.62 0.10 0.10 0.00 176.63 0.10 0.10 0.00 176.64 0.10 0.10 0.00 176.65 0.10 0.10 0.00 176.66 0.10 0.10 0.00 176.67 0.10 0.10 0.00 176.68 0.10 0.10 0.00 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 100HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.69 0.10 0.10 0.00 176.70 0.10 0.10 0.00 176.71 0.10 0.10 0.00 176.72 0.10 0.10 0.00 176.73 0.10 0.10 0.00 176.74 0.10 0.10 0.00 176.75 0.10 0.10 0.00 176.76 0.10 0.10 0.00 176.77 0.10 0.10 0.00 176.78 0.10 0.10 0.00 176.79 0.10 0.10 0.00 176.80 0.10 0.10 0.00 176.81 0.10 0.10 0.00 176.82 0.10 0.10 0.00 176.83 0.10 0.10 0.00 176.84 0.10 0.10 0.00 176.85 0.10 0.10 0.00 176.86 0.10 0.10 0.00 176.87 0.10 0.10 0.00 176.88 0.10 0.10 0.00 176.89 0.10 0.10 0.00 176.90 0.10 0.10 0.00 176.91 0.10 0.10 0.00 176.92 0.10 0.10 0.00 176.93 0.10 0.10 0.00 176.94 0.10 0.10 0.00 176.95 0.10 0.10 0.00 176.96 0.10 0.10 0.00 176.97 0.10 0.10 0.00 176.98 0.10 0.10 0.00 176.99 0.10 0.10 0.00 177.00 0.10 0.10 0.00 177.01 0.10 0.10 0.00 177.02 0.10 0.10 0.00 177.03 0.10 0.10 0.00 177.04 0.10 0.10 0.00 177.05 0.10 0.10 0.00 177.06 0.10 0.10 0.00 177.07 0.10 0.10 0.00 177.08 0.10 0.10 0.00 177.09 0.10 0.10 0.00 177.10 0.10 0.10 0.00 177.11 0.10 0.10 0.00 177.12 0.10 0.10 0.00 177.13 0.10 0.10 0.00 177.14 0.10 0.10 0.00 177.15 0.10 0.10 0.00 177.16 0.10 0.10 0.00 177.17 0.10 0.10 0.00 177.18 0.10 0.10 0.00 177.19 0.10 0.10 0.00 177.20 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.21 0.10 0.10 0.00 177.22 0.10 0.10 0.00 177.23 0.10 0.10 0.00 177.24 0.10 0.10 0.00 177.25 0.10 0.10 0.00 177.26 0.10 0.10 0.00 177.27 0.10 0.10 0.00 177.28 0.10 0.10 0.00 177.29 0.10 0.10 0.00 177.30 0.10 0.10 0.00 177.31 0.10 0.10 0.00 177.32 0.10 0.10 0.00 177.33 0.10 0.10 0.00 177.34 0.10 0.10 0.00 177.35 0.10 0.10 0.00 177.36 0.10 0.10 0.00 177.37 0.10 0.10 0.00 177.38 0.10 0.10 0.00 177.39 0.10 0.10 0.00 177.40 0.10 0.10 0.00 177.41 0.10 0.10 0.00 177.42 0.10 0.10 0.00 177.43 0.10 0.10 0.00 177.44 0.10 0.10 0.00 177.45 0.10 0.10 0.00 177.46 0.10 0.10 0.00 177.47 0.10 0.10 0.00 177.48 0.10 0.10 0.00 177.49 0.10 0.10 0.00 177.50 0.10 0.10 0.00 177.51 0.10 0.10 0.00 177.52 0.10 0.10 0.00 177.53 0.10 0.10 0.00 177.54 0.10 0.10 0.00 177.55 0.10 0.10 0.00 177.56 0.10 0.10 0.00 177.57 0.10 0.10 0.00 177.58 0.10 0.10 0.00 177.59 0.10 0.10 0.00 177.60 0.10 0.10 0.00 177.61 0.10 0.10 0.00 177.62 0.10 0.10 0.00 177.63 0.10 0.10 0.00 177.64 0.10 0.10 0.00 177.65 0.10 0.10 0.00 177.66 0.10 0.10 0.00 177.67 0.10 0.10 0.00 177.68 0.10 0.10 0.00 177.69 0.10 0.10 0.00 177.70 0.10 0.10 0.00 177.71 0.10 0.10 0.00 177.72 0.10 0.10 0.00 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 101HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.73 0.10 0.10 0.00 177.74 0.10 0.10 0.00 177.75 0.10 0.10 0.00 177.76 0.10 0.10 0.00 177.77 0.10 0.10 0.00 177.78 0.10 0.10 0.00 177.79 0.10 0.10 0.00 177.80 0.10 0.10 0.00 177.81 0.10 0.10 0.00 177.82 0.10 0.10 0.00 177.83 0.10 0.10 0.00 177.84 0.10 0.10 0.00 177.85 0.10 0.10 0.00 177.86 0.10 0.10 0.00 177.87 0.10 0.10 0.00 177.88 0.10 0.10 0.00 177.89 0.10 0.10 0.00 177.90 0.10 0.10 0.00 177.91 0.10 0.10 0.00 177.92 0.10 0.10 0.00 177.93 0.10 0.10 0.00 177.94 0.10 0.10 0.00 177.95 0.10 0.10 0.00 177.96 0.10 0.10 0.00 177.97 0.10 0.10 0.00 177.98 0.10 0.10 0.00 177.99 0.10 0.10 0.00 178.00 0.10 0.10 0.00 178.01 0.10 0.10 0.00 178.02 0.10 0.10 0.00 178.03 0.10 0.10 0.00 178.04 0.10 0.10 0.00 178.05 0.10 0.10 0.00 178.06 0.10 0.10 0.00 178.07 0.10 0.10 0.00 178.08 0.10 0.10 0.00 178.09 0.10 0.10 0.00 178.10 0.10 0.10 0.00 178.11 0.10 0.10 0.00 178.12 0.10 0.10 0.00 178.13 0.10 0.10 0.00 178.14 0.10 0.10 0.00 178.15 0.10 0.10 0.00 178.16 0.10 0.10 0.00 178.17 0.10 0.10 0.00 178.18 0.10 0.10 0.00 178.19 0.10 0.10 0.00 178.20 0.10 0.10 0.00 178.21 0.10 0.10 0.00 178.22 0.10 0.10 0.00 178.23 0.10 0.10 0.00 178.24 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.25 0.10 0.10 0.00 178.26 0.10 0.10 0.00 178.27 0.10 0.10 0.00 178.28 0.10 0.10 0.00 178.29 0.10 0.10 0.00 178.30 0.10 0.10 0.00 178.31 0.10 0.10 0.00 178.32 0.10 0.10 0.00 178.33 0.10 0.10 0.00 178.34 0.10 0.10 0.00 178.35 0.10 0.10 0.00 178.36 0.10 0.10 0.00 178.37 0.10 0.10 0.00 178.38 0.10 0.10 0.00 178.39 0.10 0.10 0.00 178.40 0.10 0.10 0.00 178.41 0.10 0.10 0.00 178.42 0.10 0.10 0.00 178.43 0.10 0.10 0.00 178.44 0.10 0.10 0.00 178.45 0.10 0.10 0.00 178.46 0.10 0.10 0.00 178.47 0.10 0.10 0.00 178.48 0.10 0.10 0.00 178.49 0.10 0.10 0.00 178.50 0.10 0.10 0.00 178.51 0.10 0.10 0.00 178.52 0.10 0.10 0.00 178.53 0.10 0.10 0.00 178.54 0.10 0.10 0.00 178.55 0.10 0.10 0.00 178.56 0.10 0.10 0.00 178.57 0.10 0.10 0.00 178.58 0.10 0.10 0.00 178.59 0.10 0.10 0.00 178.60 0.10 0.10 0.00 178.61 0.10 0.10 0.00 178.62 0.10 0.10 0.00 178.63 0.10 0.10 0.00 178.64 0.10 0.10 0.00 178.65 0.10 0.10 0.00 178.66 0.10 0.10 0.00 178.67 0.10 0.10 0.00 178.68 0.10 0.10 0.00 178.69 0.10 0.10 0.00 178.70 0.10 0.10 0.00 178.71 0.10 0.10 0.00 178.72 0.10 0.10 0.00 178.73 0.10 0.10 0.00 178.74 0.10 0.10 0.00 178.75 0.10 0.10 0.00 178.76 0.10 0.10 0.00 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 102HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.77 0.10 0.10 0.00 178.78 0.10 0.10 0.00 178.79 0.10 0.10 0.00 178.80 0.10 0.10 0.00 178.81 0.10 0.10 0.00 178.82 0.10 0.10 0.00 178.83 0.10 0.10 0.00 178.84 0.10 0.10 0.00 178.85 0.10 0.10 0.00 178.86 0.10 0.10 0.00 178.87 0.10 0.10 0.00 178.88 0.10 0.10 0.00 178.89 0.10 0.10 0.00 178.90 0.10 0.10 0.00 178.91 0.10 0.10 0.00 178.92 0.10 0.10 0.00 178.93 0.10 0.10 0.00 178.94 0.10 0.10 0.00 178.95 0.10 0.10 0.00 178.96 0.10 0.10 0.00 178.97 0.10 0.10 0.00 178.98 0.10 0.10 0.00 178.99 0.10 0.10 0.00 179.00 0.10 0.10 0.00 179.01 0.10 0.10 0.00 179.02 0.10 0.10 0.00 179.03 0.10 0.10 0.00 179.04 0.10 0.10 0.01 179.05 0.10 0.10 0.01 179.06 0.11 0.10 0.01 179.07 0.11 0.10 0.02 179.08 0.12 0.10 0.02 179.09 0.12 0.10 0.02 179.10 0.13 0.10 0.03 179.11 0.13 0.10 0.04 179.12 0.14 0.10 0.04 179.13 0.15 0.10 0.05 179.14 0.15 0.10 0.06 179.15 0.16 0.10 0.07 179.16 0.17 0.10 0.07 179.17 0.18 0.10 0.08 179.18 0.19 0.10 0.09 179.19 0.20 0.10 0.10 179.20 0.21 0.10 0.11 179.21 0.22 0.10 0.12 179.22 0.23 0.10 0.13 179.23 0.24 0.10 0.14 179.24 0.25 0.10 0.16 179.25 0.26 0.10 0.17 179.26 0.28 0.10 0.18 179.27 0.29 0.10 0.19 179.28 0.30 0.10 0.20 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.29 0.31 0.10 0.22 179.30 0.33 0.10 0.23 179.31 0.34 0.10 0.24 179.32 0.35 0.10 0.26 179.33 0.37 0.10 0.27 179.34 0.38 0.10 0.28 179.35 0.39 0.10 0.30 179.36 0.41 0.10 0.31 179.37 0.42 0.10 0.32 179.38 0.43 0.10 0.34 179.39 0.45 0.10 0.35 179.40 0.46 0.10 0.36 179.41 0.47 0.10 0.38 179.42 0.49 0.10 0.39 179.43 0.50 0.10 0.40 179.44 0.51 0.10 0.41 179.45 0.52 0.10 0.43 179.46 0.53 0.10 0.44 179.47 0.54 0.10 0.45 179.48 0.55 0.10 0.46 179.49 0.56 0.10 0.47 179.50 0.57 0.10 0.47 179.51 0.58 0.10 0.48 179.52 0.59 0.10 0.49 179.53 0.60 0.10 0.50 179.54 0.61 0.10 0.51 179.55 0.61 0.10 0.52 179.56 0.62 0.10 0.53 179.57 0.63 0.10 0.53 179.58 0.64 0.10 0.54 179.59 0.65 0.10 0.55 179.60 0.66 0.10 0.56 179.61 0.66 0.10 0.57 179.62 0.67 0.10 0.58 179.63 0.68 0.10 0.58 179.64 0.69 0.10 0.59 179.65 0.69 0.10 0.60 179.66 0.70 0.10 0.61 179.67 0.71 0.10 0.61 179.68 0.72 0.10 0.62 179.69 0.72 0.10 0.63 179.70 0.73 0.10 0.63 179.71 0.74 0.10 0.64 179.72 0.74 0.10 0.65 179.73 0.75 0.10 0.66 179.74 0.76 0.10 0.66 179.75 0.77 0.10 0.67 179.76 0.77 0.10 0.68 179.77 0.78 0.10 0.68 179.78 0.78 0.10 0.69 179.79 0.79 0.10 0.69 179.80 0.80 0.10 0.70 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 103HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.81 0.80 0.10 0.71 179.82 0.81 0.10 0.71 179.83 0.82 0.10 0.72 179.84 0.82 0.10 0.73 179.85 0.83 0.10 0.73 179.86 0.83 0.10 0.74 179.87 0.84 0.10 0.74 179.88 0.85 0.10 0.75 179.89 0.85 0.10 0.76 179.90 0.86 0.10 0.76 179.91 0.86 0.10 0.77 179.92 0.87 0.10 0.77 179.93 0.88 0.10 0.78 179.94 0.88 0.10 0.79 179.95 0.89 0.10 0.79 179.96 0.89 0.10 0.80 179.97 0.90 0.10 0.80 179.98 0.90 0.10 0.81 179.99 0.91 0.10 0.81 180.00 0.92 0.10 0.82 180.01 0.92 0.10 0.82 180.02 0.93 0.10 0.83 180.03 0.93 0.10 0.83 180.04 0.94 0.10 0.84 180.05 0.94 0.10 0.85 180.06 0.95 0.10 0.85 180.07 0.95 0.10 0.86 180.08 0.96 0.10 0.86 180.09 0.96 0.10 0.87 180.10 0.97 0.10 0.87 180.11 0.97 0.10 0.88 180.12 0.98 0.10 0.88 180.13 0.98 0.10 0.89 180.14 0.99 0.10 0.89 180.15 0.99 0.10 0.90 180.16 1.00 0.10 0.90 180.17 1.00 0.10 0.91 180.18 1.01 0.10 0.91 180.19 1.01 0.10 0.92 180.20 1.02 0.10 0.92 180.21 1.02 0.10 0.93 180.22 1.03 0.10 0.93 180.23 1.03 0.10 0.94 180.24 1.04 0.10 0.94 180.25 1.04 0.10 0.95 180.26 1.06 0.10 0.96 180.27 1.08 0.10 0.99 180.28 1.11 0.10 1.02 180.29 1.15 0.10 1.05 180.30 1.19 0.10 1.09 180.31 1.23 0.10 1.14 180.32 1.28 0.10 1.19 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.33 1.33 0.10 1.24 180.34 1.39 0.10 1.29 180.35 1.44 0.10 1.35 180.36 1.50 0.10 1.40 180.37 1.56 0.10 1.47 180.38 1.63 0.10 1.53 180.39 1.69 0.10 1.60 180.40 1.76 0.10 1.66 180.41 1.83 0.10 1.74 180.42 1.90 0.10 1.81 180.43 1.98 0.10 1.88 180.44 2.06 0.10 1.96 180.45 2.13 0.10 2.04 180.46 2.22 0.10 2.12 180.47 2.30 0.10 2.20 180.48 2.39 0.10 2.29 180.49 2.48 0.10 2.38 180.50 2.57 0.10 2.47 180.51 2.66 0.10 2.57 180.52 2.76 0.10 2.66 180.53 2.85 0.10 2.76 180.54 2.95 0.10 2.86 180.55 3.05 0.10 2.96 180.56 3.16 0.10 3.06 180.57 3.26 0.10 3.17 180.58 3.37 0.10 3.27 180.59 3.48 0.10 3.38 180.60 3.59 0.10 3.49 180.61 3.70 0.10 3.60 180.62 3.82 0.10 3.72 180.63 3.93 0.10 3.84 180.64 4.05 0.10 3.95 180.65 4.17 0.10 4.07 180.66 4.29 0.10 4.20 180.67 4.42 0.10 4.32 180.68 4.55 0.10 4.45 180.69 4.68 0.10 4.58 180.70 4.81 0.10 4.71 180.71 4.94 0.10 4.85 180.72 5.08 0.10 4.98 180.73 5.22 0.10 5.12 180.74 5.36 0.10 5.26 180.75 5.50 0.10 5.40 180.76 5.64 0.10 5.54 180.77 5.79 0.10 5.69 180.78 5.93 0.10 5.84 180.79 6.08 0.10 5.99 180.80 6.23 0.10 6.14 180.81 6.39 0.10 6.29 180.82 6.54 0.10 6.45 180.83 6.70 0.10 6.60 180.84 6.86 0.10 6.76 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 104HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.85 7.02 0.10 6.92 180.86 7.19 0.10 7.09 180.87 7.36 0.10 7.26 180.88 7.53 0.10 7.43 180.89 7.71 0.10 7.61 180.90 7.88 0.10 7.79 180.91 8.06 0.10 7.97 180.92 8.24 0.10 8.15 180.93 8.43 0.10 8.33 180.94 8.61 0.10 8.52 180.95 8.80 0.10 8.71 180.96 8.99 0.10 8.90 180.97 9.19 0.10 9.09 180.98 9.38 0.10 9.28 180.99 9.58 0.10 9.48 181.00 9.78 0.10 9.68 181.01 9.98 0.10 9.88 181.02 10.18 0.10 10.09 181.03 10.39 0.10 10.29 181.04 10.60 0.10 10.50 181.05 10.81 0.10 10.71 181.06 10.99 0.10 10.90 181.07 11.18 0.10 11.08 181.08 11.37 0.10 11.27 181.09 11.55 0.10 11.46 181.10 11.74 0.10 11.65 181.11 11.93 0.10 11.84 181.12 12.12 0.10 12.03 181.13 12.32 0.10 12.22 181.14 12.51 0.10 12.41 181.15 12.70 0.10 12.61 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 105HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 175.65 1,738 0 175.66 1,738 7 175.67 1,738 14 175.68 1,738 21 175.69 1,738 28 175.70 1,738 35 175.71 1,738 42 175.72 1,738 49 175.73 1,738 56 175.74 1,738 63 175.75 1,738 70 175.76 1,738 76 175.77 1,738 83 175.78 1,738 90 175.79 1,738 97 175.80 1,738 104 175.81 1,738 111 175.82 1,738 118 175.83 1,738 125 175.84 1,738 132 175.85 1,738 139 175.86 1,738 146 175.87 1,738 153 175.88 1,738 160 175.89 1,738 167 175.90 1,738 174 175.91 1,738 181 175.92 1,738 188 175.93 1,738 195 175.94 1,738 202 175.95 1,738 209 175.96 1,738 215 175.97 1,738 222 175.98 1,738 229 175.99 1,738 236 176.00 1,738 243 176.01 1,738 250 176.02 1,738 257 176.03 1,738 264 176.04 1,738 271 176.05 1,738 278 176.06 1,738 285 176.07 1,738 292 176.08 1,738 299 176.09 1,738 306 176.10 1,738 313 176.11 1,738 320 176.12 1,738 327 176.13 1,738 334 176.14 1,738 341 176.15 1,738 348 176.16 1,738 354 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.17 1,738 361 176.18 1,738 368 176.19 1,738 375 176.20 1,738 382 176.21 1,738 389 176.22 1,738 396 176.23 1,738 403 176.24 1,738 410 176.25 1,738 417 176.26 1,738 424 176.27 1,738 431 176.28 1,738 438 176.29 1,738 445 176.30 1,738 452 176.31 1,738 459 176.32 1,738 466 176.33 1,738 473 176.34 1,738 480 176.35 1,738 487 176.36 1,738 494 176.37 1,738 500 176.38 1,738 507 176.39 1,738 514 176.40 1,738 521 176.41 1,738 535 176.42 1,738 549 176.43 1,738 564 176.44 1,738 578 176.45 1,738 592 176.46 1,738 606 176.47 1,738 620 176.48 1,738 634 176.49 1,738 648 176.50 1,738 662 176.51 1,738 676 176.52 1,738 690 176.53 1,738 704 176.54 1,738 718 176.55 1,738 732 176.56 1,738 746 176.57 1,738 760 176.58 1,738 774 176.59 1,738 788 176.60 1,738 802 176.61 1,738 816 176.62 1,738 830 176.63 1,738 844 176.64 1,738 858 176.65 1,738 872 176.66 1,738 886 176.67 1,738 900 176.68 1,738 914 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 106HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.69 1,738 928 176.70 1,738 942 176.71 1,738 956 176.72 1,738 970 176.73 1,738 984 176.74 1,738 998 176.75 1,738 1,012 176.76 1,738 1,025 176.77 1,738 1,039 176.78 1,738 1,053 176.79 1,738 1,067 176.80 1,738 1,081 176.81 1,738 1,095 176.82 1,738 1,109 176.83 1,738 1,123 176.84 1,738 1,137 176.85 1,738 1,150 176.86 1,738 1,164 176.87 1,738 1,178 176.88 1,738 1,192 176.89 1,738 1,206 176.90 1,738 1,220 176.91 1,738 1,233 176.92 1,738 1,247 176.93 1,738 1,261 176.94 1,738 1,275 176.95 1,738 1,289 176.96 1,738 1,303 176.97 1,738 1,316 176.98 1,738 1,330 176.99 1,738 1,344 177.00 1,738 1,358 177.01 1,738 1,371 177.02 1,738 1,385 177.03 1,738 1,399 177.04 1,738 1,413 177.05 1,738 1,427 177.06 1,738 1,440 177.07 1,738 1,454 177.08 1,738 1,468 177.09 1,738 1,481 177.10 1,738 1,495 177.11 1,738 1,509 177.12 1,738 1,523 177.13 1,738 1,536 177.14 1,738 1,550 177.15 1,738 1,564 177.16 1,738 1,577 177.17 1,738 1,591 177.18 1,738 1,605 177.19 1,738 1,618 177.20 1,738 1,632 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.21 1,738 1,646 177.22 1,738 1,659 177.23 1,738 1,673 177.24 1,738 1,686 177.25 1,738 1,700 177.26 1,738 1,714 177.27 1,738 1,727 177.28 1,738 1,741 177.29 1,738 1,754 177.30 1,738 1,768 177.31 1,738 1,782 177.32 1,738 1,795 177.33 1,738 1,809 177.34 1,738 1,822 177.35 1,738 1,836 177.36 1,738 1,849 177.37 1,738 1,863 177.38 1,738 1,876 177.39 1,738 1,890 177.40 1,738 1,903 177.41 1,738 1,917 177.42 1,738 1,930 177.43 1,738 1,944 177.44 1,738 1,957 177.45 1,738 1,971 177.46 1,738 1,984 177.47 1,738 1,998 177.48 1,738 2,011 177.49 1,738 2,025 177.50 1,738 2,038 177.51 1,738 2,051 177.52 1,738 2,065 177.53 1,738 2,078 177.54 1,738 2,092 177.55 1,738 2,105 177.56 1,738 2,118 177.57 1,738 2,132 177.58 1,738 2,145 177.59 1,738 2,158 177.60 1,738 2,172 177.61 1,738 2,185 177.62 1,738 2,198 177.63 1,738 2,212 177.64 1,738 2,225 177.65 1,738 2,238 177.66 1,738 2,252 177.67 1,738 2,265 177.68 1,738 2,278 177.69 1,738 2,291 177.70 1,738 2,305 177.71 1,738 2,318 177.72 1,738 2,331 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 107HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.73 1,738 2,344 177.74 1,738 2,358 177.75 1,738 2,371 177.76 1,738 2,384 177.77 1,738 2,397 177.78 1,738 2,410 177.79 1,738 2,423 177.80 1,738 2,437 177.81 1,738 2,450 177.82 1,738 2,463 177.83 1,738 2,476 177.84 1,738 2,489 177.85 1,738 2,502 177.86 1,738 2,515 177.87 1,738 2,528 177.88 1,738 2,541 177.89 1,738 2,554 177.90 1,738 2,567 177.91 1,738 2,581 177.92 1,738 2,594 177.93 1,738 2,607 177.94 1,738 2,620 177.95 1,738 2,633 177.96 1,738 2,646 177.97 1,738 2,658 177.98 1,738 2,671 177.99 1,738 2,684 178.00 1,738 2,697 178.01 1,738 2,710 178.02 1,738 2,723 178.03 1,738 2,736 178.04 1,738 2,749 178.05 1,738 2,762 178.06 1,738 2,775 178.07 1,738 2,788 178.08 1,738 2,800 178.09 1,738 2,813 178.10 1,738 2,826 178.11 1,738 2,839 178.12 1,738 2,852 178.13 1,738 2,864 178.14 1,738 2,877 178.15 1,738 2,890 178.16 1,738 2,903 178.17 1,738 2,915 178.18 1,738 2,928 178.19 1,738 2,941 178.20 1,738 2,954 178.21 1,738 2,966 178.22 1,738 2,979 178.23 1,738 2,992 178.24 1,738 3,004 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.25 1,738 3,017 178.26 1,738 3,030 178.27 1,738 3,042 178.28 1,738 3,055 178.29 1,738 3,067 178.30 1,738 3,080 178.31 1,738 3,092 178.32 1,738 3,105 178.33 1,738 3,117 178.34 1,738 3,130 178.35 1,738 3,143 178.36 1,738 3,155 178.37 1,738 3,167 178.38 1,738 3,180 178.39 1,738 3,192 178.40 1,738 3,205 178.41 1,738 3,217 178.42 1,738 3,230 178.43 1,738 3,242 178.44 1,738 3,254 178.45 1,738 3,267 178.46 1,738 3,279 178.47 1,738 3,291 178.48 1,738 3,304 178.49 1,738 3,316 178.50 1,738 3,328 178.51 1,738 3,341 178.52 1,738 3,353 178.53 1,738 3,365 178.54 1,738 3,377 178.55 1,738 3,389 178.56 1,738 3,402 178.57 1,738 3,414 178.58 1,738 3,426 178.59 1,738 3,438 178.60 1,738 3,450 178.61 1,738 3,462 178.62 1,738 3,474 178.63 1,738 3,487 178.64 1,738 3,499 178.65 1,738 3,511 178.66 1,738 3,523 178.67 1,738 3,535 178.68 1,738 3,547 178.69 1,738 3,559 178.70 1,738 3,571 178.71 1,738 3,582 178.72 1,738 3,594 178.73 1,738 3,606 178.74 1,738 3,618 178.75 1,738 3,630 178.76 1,738 3,642 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 108HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.77 1,738 3,654 178.78 1,738 3,665 178.79 1,738 3,677 178.80 1,738 3,689 178.81 1,738 3,701 178.82 1,738 3,713 178.83 1,738 3,724 178.84 1,738 3,736 178.85 1,738 3,748 178.86 1,738 3,759 178.87 1,738 3,771 178.88 1,738 3,783 178.89 1,738 3,794 178.90 1,738 3,806 178.91 1,738 3,817 178.92 1,738 3,829 178.93 1,738 3,840 178.94 1,738 3,852 178.95 1,738 3,863 178.96 1,738 3,875 178.97 1,738 3,886 178.98 1,738 3,898 178.99 1,738 3,909 179.00 1,738 3,920 179.01 1,738 3,932 179.02 1,738 3,943 179.03 1,738 3,954 179.04 1,738 3,965 179.05 1,738 3,977 179.06 1,738 3,988 179.07 1,738 3,999 179.08 1,738 4,010 179.09 1,738 4,022 179.10 1,738 4,033 179.11 1,738 4,044 179.12 1,738 4,055 179.13 1,738 4,066 179.14 1,738 4,077 179.15 1,738 4,088 179.16 1,738 4,099 179.17 1,738 4,110 179.18 1,738 4,121 179.19 1,738 4,132 179.20 1,738 4,143 179.21 1,738 4,154 179.22 1,738 4,164 179.23 1,738 4,175 179.24 1,738 4,186 179.25 1,738 4,197 179.26 1,738 4,207 179.27 1,738 4,218 179.28 1,738 4,229 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.29 1,738 4,239 179.30 1,738 4,250 179.31 1,738 4,261 179.32 1,738 4,271 179.33 1,738 4,282 179.34 1,738 4,292 179.35 1,738 4,303 179.36 1,738 4,313 179.37 1,738 4,323 179.38 1,738 4,334 179.39 1,738 4,344 179.40 1,738 4,354 179.41 1,738 4,365 179.42 1,738 4,375 179.43 1,738 4,385 179.44 1,738 4,395 179.45 1,738 4,405 179.46 1,738 4,416 179.47 1,738 4,426 179.48 1,738 4,436 179.49 1,738 4,446 179.50 1,738 4,456 179.51 1,738 4,466 179.52 1,738 4,475 179.53 1,738 4,485 179.54 1,738 4,495 179.55 1,738 4,505 179.56 1,738 4,514 179.57 1,738 4,524 179.58 1,738 4,534 179.59 1,738 4,543 179.60 1,738 4,553 179.61 1,738 4,562 179.62 1,738 4,572 179.63 1,738 4,581 179.64 1,738 4,591 179.65 1,738 4,600 179.66 1,738 4,609 179.67 1,738 4,618 179.68 1,738 4,627 179.69 1,738 4,636 179.70 1,738 4,645 179.71 1,738 4,654 179.72 1,738 4,663 179.73 1,738 4,672 179.74 1,738 4,680 179.75 1,738 4,689 179.76 1,738 4,698 179.77 1,738 4,706 179.78 1,738 4,714 179.79 1,738 4,723 179.80 1,738 4,731 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 109HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.81 1,738 4,739 179.82 1,738 4,747 179.83 1,738 4,755 179.84 1,738 4,763 179.85 1,738 4,771 179.86 1,738 4,779 179.87 1,738 4,787 179.88 1,738 4,795 179.89 1,738 4,802 179.90 1,738 4,810 179.91 1,738 4,818 179.92 1,738 4,825 179.93 1,738 4,833 179.94 1,738 4,840 179.95 1,738 4,848 179.96 1,738 4,855 179.97 1,738 4,863 179.98 1,738 4,870 179.99 1,738 4,878 180.00 1,738 4,885 180.01 1,738 4,893 180.02 1,738 4,900 180.03 1,738 4,907 180.04 1,738 4,915 180.05 1,738 4,922 180.06 1,738 4,929 180.07 1,738 4,936 180.08 1,738 4,944 180.09 1,738 4,951 180.10 1,738 4,958 180.11 1,738 4,965 180.12 1,738 4,972 180.13 1,738 4,979 180.14 1,738 4,986 180.15 1,738 4,993 180.16 1,738 5,000 180.17 1,738 5,007 180.18 1,738 5,014 180.19 1,738 5,021 180.20 1,738 5,028 180.21 1,738 5,035 180.22 1,738 5,042 180.23 1,738 5,049 180.24 1,738 5,055 180.25 1,738 5,062 180.26 1,738 5,069 180.27 1,738 5,076 180.28 1,738 5,083 180.29 1,738 5,090 180.30 1,738 5,097 180.31 1,738 5,104 180.32 1,738 5,111 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.33 1,738 5,118 180.34 1,738 5,125 180.35 1,738 5,132 180.36 1,738 5,139 180.37 1,738 5,146 180.38 1,738 5,153 180.39 1,738 5,160 180.40 1,738 5,167 180.41 1,738 5,174 180.42 1,738 5,181 180.43 1,738 5,188 180.44 1,738 5,195 180.45 1,738 5,201 180.46 1,738 5,208 180.47 1,738 5,215 180.48 1,738 5,222 180.49 1,738 5,229 180.50 1,738 5,236 180.51 1,738 5,243 180.52 1,738 5,250 180.53 1,738 5,257 180.54 1,738 5,264 180.55 1,738 5,271 180.56 1,738 5,278 180.57 1,738 5,285 180.58 1,738 5,292 180.59 1,738 5,299 180.60 1,738 5,306 180.61 1,738 5,313 180.62 1,738 5,320 180.63 1,738 5,327 180.64 1,738 5,334 180.65 1,738 5,340 180.66 1,738 5,347 180.67 1,738 5,354 180.68 1,738 5,361 180.69 1,738 5,368 180.70 1,738 5,375 180.71 1,738 5,382 180.72 1,738 5,389 180.73 1,738 5,396 180.74 1,738 5,403 180.75 1,738 5,410 180.76 1,738 5,417 180.77 1,738 5,424 180.78 1,738 5,431 180.79 1,738 5,438 180.80 1,738 5,445 180.81 1,738 5,452 180.82 1,738 5,459 180.83 1,738 5,466 180.84 1,738 5,473 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 110HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.85 1,738 5,479 180.86 1,738 5,486 180.87 1,738 5,493 180.88 1,738 5,500 180.89 1,738 5,507 180.90 1,738 5,514 180.91 1,738 5,521 180.92 1,738 5,528 180.93 1,738 5,535 180.94 1,738 5,542 180.95 1,738 5,549 180.96 1,738 5,556 180.97 1,738 5,563 180.98 1,738 5,570 180.99 1,738 5,577 181.00 1,738 5,584 181.01 1,738 5,591 181.02 1,738 5,598 181.03 1,738 5,605 181.04 1,738 5,612 181.05 1,738 5,619 181.06 1,738 5,625 181.07 1,738 5,632 181.08 1,738 5,639 181.09 1,738 5,646 181.10 1,738 5,653 181.11 1,738 5,660 181.12 1,738 5,667 181.13 1,738 5,674 181.14 1,738 5,681 181.15 1,738 5,688 Type III 24-hr 10-Year Rainfall=5.12"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 111HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,968 sf, 21.15% Impervious, Inflow Depth = 1.27" for 10-Year event Inflow = 3.24 cfs @ 12.15 hrs, Volume= 12,734 cf Primary = 3.24 cfs @ 12.15 hrs, Volume= 12,734 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 112HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=16,145 sf 22.38% Impervious Runoff Depth=3.32"Subcatchment DA 1A: DA 1A Tc=10.0 min CN=74 Runoff=1.26 cfs 4,467 cf Runoff Area=16,665 sf 100.00% Impervious Runoff Depth=5.92"Subcatchment DA 1B: DA 1B Tc=5.0 min CN=98 Runoff=2.38 cfs 8,224 cf Runoff Area=47,379 sf 1.50% Impervious Runoff Depth=2.65"Subcatchment DA 1C: DA 1C Tc=10.0 min CN=67 Runoff=2.91 cfs 10,468 cf Runoff Area=10,641 sf 41.23% Impervious Runoff Depth=4.03"Subcatchment DA 1D: DA 1D Tc=5.0 min CN=81 Runoff=1.18 cfs 3,573 cf Runoff Area=29,138 sf 0.00% Impervious Runoff Depth=2.65"Subcatchment DA 1E: DA 1E Flow Length=446' Tc=10.7 min CN=67 Runoff=1.75 cfs 6,438 cf Peak Elev=185.09' Storage=1,175 cf Inflow=1.26 cfs 4,467 cfPond RG-A: Rain Garden A Discarded=0.06 cfs 2,876 cf Primary=1.04 cfs 1,591 cf Outflow=1.10 cfs 4,467 cf Peak Elev=158.04' Storage=1,485 cf Inflow=1.18 cfs 3,573 cfPond RG-B: Rain Garden B Discarded=0.06 cfs 3,110 cf Primary=0.31 cfs 464 cf Outflow=0.37 cfs 3,573 cf Peak Elev=179.04' Storage=3,964 cf Inflow=2.38 cfs 8,224 cfPond SWB: Stormtech MC 3500 (SWM-B) Discarded=0.10 cfs 8,195 cf Primary=0.01 cfs 29 cf Outflow=0.10 cfs 8,224 cf Inflow=5.38 cfs 18,990 cfLink TSD: Total Site Discharge Primary=5.38 cfs 18,990 cf Total Runoff Area = 119,968 sf Runoff Volume = 33,170 cf Average Runoff Depth = 3.32" 78.85% Pervious = 94,594 sf 21.15% Impervious = 25,374 sf Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 113HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1A: DA 1A Runoff = 1.26 cfs @ 12.14 hrs, Volume= 4,467 cf, Depth= 3.32" Routed to Pond RG-A : Rain Garden A Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 6,492 66 Woods, Poor, HSG B 6,040 69 50-75% Grass cover, Fair, HSG B 3,613 98 Paved parking, HSG B 16,145 74 Weighted Average 12,532 77.62% Pervious Area 3,613 22.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 114HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1B: DA 1B Runoff = 2.38 cfs @ 12.07 hrs, Volume= 8,224 cf, Depth= 5.92" Routed to Pond SWB : Stormtech MC 3500 (SWM-B) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 4,000 98 Roofs, HSG B 12,665 98 Paved parking, HSG B 16,665 98 Weighted Average 16,665 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 115HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1C: DA 1C Runoff = 2.91 cfs @ 12.14 hrs, Volume= 10,468 cf, Depth= 2.65" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 709 98 Paved parking, HSG B 22,996 66 Woods, Poor, HSG B 23,674 67 Brush, Poor, HSG B 47,379 67 Weighted Average 46,670 98.50% Pervious Area 709 1.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 116HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1D: DA 1D Runoff = 1.18 cfs @ 12.07 hrs, Volume= 3,573 cf, Depth= 4.03" Routed to Pond RG-B : Rain Garden B Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 4,387 98 Paved parking, HSG B 6,254 69 50-75% Grass cover, Fair, HSG B 10,641 81 Weighted Average 6,254 58.77% Pervious Area 4,387 41.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 117HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1E: DA 1E Runoff = 1.75 cfs @ 12.15 hrs, Volume= 6,438 cf, Depth= 2.65" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25-Year Rainfall=6.16" Area (sf) CN Description 20,116 66 Woods, Poor, HSG B 9,022 69 50-75% Grass cover, Fair, HSG B 29,138 67 Weighted Average 29,138 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.7 100 0.2400 0.22 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 3.0 346 0.0750 1.92 Shallow Concentrated Flow, SHALLOW Short Grass Pasture Kv= 7.0 fps 10.7 446 Total Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 118HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-A: Rain Garden A Inflow Area = 16,145 sf, 22.38% Impervious, Inflow Depth = 3.32" for 25-Year event Inflow = 1.26 cfs @ 12.14 hrs, Volume= 4,467 cf Outflow = 1.10 cfs @ 12.21 hrs, Volume= 4,467 cf, Atten= 13%, Lag= 4.0 min Discarded = 0.06 cfs @ 12.21 hrs, Volume= 2,876 cf Primary = 1.04 cfs @ 12.21 hrs, Volume= 1,591 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 185.09' @ 12.21 hrs Surf.Area= 1,059 sf Storage= 1,175 cf Plug-Flow detention time= 167.6 min calculated for 4,465 cf (100% of inflow) Center-of-Mass det. time= 167.6 min ( 999.0 - 831.3 ) Volume Invert Avail.Storage Storage Description #1 183.00' 1,404 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 183.00 143 0 0 184.00 501 322 322 185.00 1,011 756 1,078 185.30 1,164 326 1,404 Device Routing Invert Outlet Devices #1 Primary 185.00'15.0' long x 3.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.41 2.56 2.69 2.67 2.66 2.66 2.65 2.67 2.67 2.70 2.77 2.83 2.87 2.93 3.10 3.19 3.32 #2 Discarded 183.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 12.21 hrs HW=185.09' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=1.02 cfs @ 12.21 hrs HW=185.09' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 1.02 cfs @ 0.73 fps) Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 119HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.00 0.00 0.00 0.00 183.01 0.01 0.01 0.00 183.02 0.01 0.01 0.00 183.03 0.01 0.01 0.00 183.04 0.01 0.01 0.00 183.05 0.01 0.01 0.00 183.06 0.01 0.01 0.00 183.07 0.01 0.01 0.00 183.08 0.01 0.01 0.00 183.09 0.01 0.01 0.00 183.10 0.01 0.01 0.00 183.11 0.01 0.01 0.00 183.12 0.01 0.01 0.00 183.13 0.01 0.01 0.00 183.14 0.01 0.01 0.00 183.15 0.01 0.01 0.00 183.16 0.01 0.01 0.00 183.17 0.01 0.01 0.00 183.18 0.01 0.01 0.00 183.19 0.01 0.01 0.00 183.20 0.01 0.01 0.00 183.21 0.01 0.01 0.00 183.22 0.01 0.01 0.00 183.23 0.01 0.01 0.00 183.24 0.01 0.01 0.00 183.25 0.01 0.01 0.00 183.26 0.01 0.01 0.00 183.27 0.01 0.01 0.00 183.28 0.01 0.01 0.00 183.29 0.01 0.01 0.00 183.30 0.01 0.01 0.00 183.31 0.01 0.01 0.00 183.32 0.01 0.01 0.00 183.33 0.01 0.01 0.00 183.34 0.01 0.01 0.00 183.35 0.01 0.01 0.00 183.36 0.02 0.02 0.00 183.37 0.02 0.02 0.00 183.38 0.02 0.02 0.00 183.39 0.02 0.02 0.00 183.40 0.02 0.02 0.00 183.41 0.02 0.02 0.00 183.42 0.02 0.02 0.00 183.43 0.02 0.02 0.00 183.44 0.02 0.02 0.00 183.45 0.02 0.02 0.00 183.46 0.02 0.02 0.00 183.47 0.02 0.02 0.00 183.48 0.02 0.02 0.00 183.49 0.02 0.02 0.00 183.50 0.02 0.02 0.00 183.51 0.02 0.02 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.52 0.02 0.02 0.00 183.53 0.02 0.02 0.00 183.54 0.02 0.02 0.00 183.55 0.02 0.02 0.00 183.56 0.02 0.02 0.00 183.57 0.02 0.02 0.00 183.58 0.02 0.02 0.00 183.59 0.02 0.02 0.00 183.60 0.02 0.02 0.00 183.61 0.02 0.02 0.00 183.62 0.02 0.02 0.00 183.63 0.02 0.02 0.00 183.64 0.02 0.02 0.00 183.65 0.02 0.02 0.00 183.66 0.02 0.02 0.00 183.67 0.02 0.02 0.00 183.68 0.02 0.02 0.00 183.69 0.02 0.02 0.00 183.70 0.02 0.02 0.00 183.71 0.02 0.02 0.00 183.72 0.02 0.02 0.00 183.73 0.02 0.02 0.00 183.74 0.02 0.02 0.00 183.75 0.02 0.02 0.00 183.76 0.02 0.02 0.00 183.77 0.02 0.02 0.00 183.78 0.02 0.02 0.00 183.79 0.02 0.02 0.00 183.80 0.02 0.02 0.00 183.81 0.02 0.02 0.00 183.82 0.02 0.02 0.00 183.83 0.02 0.02 0.00 183.84 0.02 0.02 0.00 183.85 0.02 0.02 0.00 183.86 0.03 0.03 0.00 183.87 0.03 0.03 0.00 183.88 0.03 0.03 0.00 183.89 0.03 0.03 0.00 183.90 0.03 0.03 0.00 183.91 0.03 0.03 0.00 183.92 0.03 0.03 0.00 183.93 0.03 0.03 0.00 183.94 0.03 0.03 0.00 183.95 0.03 0.03 0.00 183.96 0.03 0.03 0.00 183.97 0.03 0.03 0.00 183.98 0.03 0.03 0.00 183.99 0.03 0.03 0.00 184.00 0.03 0.03 0.00 184.01 0.03 0.03 0.00 184.02 0.03 0.03 0.00 184.03 0.03 0.03 0.00 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 120HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.04 0.03 0.03 0.00 184.05 0.03 0.03 0.00 184.06 0.03 0.03 0.00 184.07 0.03 0.03 0.00 184.08 0.03 0.03 0.00 184.09 0.03 0.03 0.00 184.10 0.03 0.03 0.00 184.11 0.03 0.03 0.00 184.12 0.03 0.03 0.00 184.13 0.03 0.03 0.00 184.14 0.03 0.03 0.00 184.15 0.03 0.03 0.00 184.16 0.03 0.03 0.00 184.17 0.03 0.03 0.00 184.18 0.03 0.03 0.00 184.19 0.03 0.03 0.00 184.20 0.03 0.03 0.00 184.21 0.03 0.03 0.00 184.22 0.03 0.03 0.00 184.23 0.03 0.03 0.00 184.24 0.03 0.03 0.00 184.25 0.03 0.03 0.00 184.26 0.04 0.04 0.00 184.27 0.04 0.04 0.00 184.28 0.04 0.04 0.00 184.29 0.04 0.04 0.00 184.30 0.04 0.04 0.00 184.31 0.04 0.04 0.00 184.32 0.04 0.04 0.00 184.33 0.04 0.04 0.00 184.34 0.04 0.04 0.00 184.35 0.04 0.04 0.00 184.36 0.04 0.04 0.00 184.37 0.04 0.04 0.00 184.38 0.04 0.04 0.00 184.39 0.04 0.04 0.00 184.40 0.04 0.04 0.00 184.41 0.04 0.04 0.00 184.42 0.04 0.04 0.00 184.43 0.04 0.04 0.00 184.44 0.04 0.04 0.00 184.45 0.04 0.04 0.00 184.46 0.04 0.04 0.00 184.47 0.04 0.04 0.00 184.48 0.04 0.04 0.00 184.49 0.04 0.04 0.00 184.50 0.04 0.04 0.00 184.51 0.04 0.04 0.00 184.52 0.04 0.04 0.00 184.53 0.04 0.04 0.00 184.54 0.04 0.04 0.00 184.55 0.04 0.04 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.56 0.04 0.04 0.00 184.57 0.04 0.04 0.00 184.58 0.04 0.04 0.00 184.59 0.04 0.04 0.00 184.60 0.04 0.04 0.00 184.61 0.05 0.05 0.00 184.62 0.05 0.05 0.00 184.63 0.05 0.05 0.00 184.64 0.05 0.05 0.00 184.65 0.05 0.05 0.00 184.66 0.05 0.05 0.00 184.67 0.05 0.05 0.00 184.68 0.05 0.05 0.00 184.69 0.05 0.05 0.00 184.70 0.05 0.05 0.00 184.71 0.05 0.05 0.00 184.72 0.05 0.05 0.00 184.73 0.05 0.05 0.00 184.74 0.05 0.05 0.00 184.75 0.05 0.05 0.00 184.76 0.05 0.05 0.00 184.77 0.05 0.05 0.00 184.78 0.05 0.05 0.00 184.79 0.05 0.05 0.00 184.80 0.05 0.05 0.00 184.81 0.05 0.05 0.00 184.82 0.05 0.05 0.00 184.83 0.05 0.05 0.00 184.84 0.05 0.05 0.00 184.85 0.05 0.05 0.00 184.86 0.05 0.05 0.00 184.87 0.05 0.05 0.00 184.88 0.05 0.05 0.00 184.89 0.05 0.05 0.00 184.90 0.05 0.05 0.00 184.91 0.05 0.05 0.00 184.92 0.05 0.05 0.00 184.93 0.05 0.05 0.00 184.94 0.05 0.05 0.00 184.95 0.05 0.05 0.00 184.96 0.06 0.06 0.00 184.97 0.06 0.06 0.00 184.98 0.06 0.06 0.00 184.99 0.06 0.06 0.00 185.00 0.06 0.06 0.00 185.01 0.09 0.06 0.04 185.02 0.16 0.06 0.10 185.03 0.24 0.06 0.19 185.04 0.35 0.06 0.29 185.05 0.46 0.06 0.40 185.06 0.59 0.06 0.53 185.07 0.73 0.06 0.67 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 121HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 185.08 0.88 0.06 0.82 185.09 1.03 0.06 0.98 185.10 1.20 0.06 1.14 185.11 1.38 0.06 1.32 185.12 1.56 0.06 1.50 185.13 1.75 0.06 1.69 185.14 1.95 0.06 1.89 185.15 2.16 0.06 2.10 185.16 2.37 0.06 2.31 185.17 2.59 0.06 2.53 185.18 2.82 0.06 2.76 185.19 3.06 0.06 2.99 185.20 3.30 0.06 3.23 185.21 3.55 0.06 3.49 185.22 3.82 0.06 3.75 185.23 4.09 0.06 4.02 185.24 4.37 0.06 4.30 185.25 4.65 0.06 4.59 185.26 4.95 0.06 4.88 185.27 5.25 0.06 5.18 185.28 5.55 0.06 5.49 185.29 5.87 0.06 5.80 185.30 6.19 0.06 6.12 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 122HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.00 143 0 183.01 147 1 183.02 150 3 183.03 154 4 183.04 157 6 183.05 161 8 183.06 164 9 183.07 168 11 183.08 172 13 183.09 175 14 183.10 179 16 183.11 182 18 183.12 186 20 183.13 190 22 183.14 193 24 183.15 197 25 183.16 200 27 183.17 204 29 183.18 207 32 183.19 211 34 183.20 215 36 183.21 218 38 183.22 222 40 183.23 225 42 183.24 229 45 183.25 233 47 183.26 236 49 183.27 240 52 183.28 243 54 183.29 247 57 183.30 250 59 183.31 254 62 183.32 258 64 183.33 261 67 183.34 265 69 183.35 268 72 183.36 272 75 183.37 275 77 183.38 279 80 183.39 283 83 183.40 286 86 183.41 290 89 183.42 293 92 183.43 297 95 183.44 301 98 183.45 304 101 183.46 308 104 183.47 311 107 183.48 315 110 183.49 318 113 183.50 322 116 183.51 326 119 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.52 329 123 183.53 333 126 183.54 336 129 183.55 340 133 183.56 343 136 183.57 347 140 183.58 351 143 183.59 354 147 183.60 358 150 183.61 361 154 183.62 365 157 183.63 369 161 183.64 372 165 183.65 376 169 183.66 379 172 183.67 383 176 183.68 386 180 183.69 390 184 183.70 394 188 183.71 397 192 183.72 401 196 183.73 404 200 183.74 408 204 183.75 412 208 183.76 415 212 183.77 419 216 183.78 422 220 183.79 426 225 183.80 429 229 183.81 433 233 183.82 437 238 183.83 440 242 183.84 444 246 183.85 447 251 183.86 451 255 183.87 454 260 183.88 458 264 183.89 462 269 183.90 465 274 183.91 469 278 183.92 472 283 183.93 476 288 183.94 480 293 183.95 483 297 183.96 487 302 183.97 490 307 183.98 494 312 183.99 497 317 184.00 501 322 184.01 506 327 184.02 511 332 184.03 516 337 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 123HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.04 521 342 184.05 527 348 184.06 532 353 184.07 537 358 184.08 542 364 184.09 547 369 184.10 552 375 184.11 557 380 184.12 562 386 184.13 567 391 184.14 572 397 184.15 578 403 184.16 583 409 184.17 588 415 184.18 593 420 184.19 598 426 184.20 603 432 184.21 608 438 184.22 613 445 184.23 618 451 184.24 623 457 184.25 629 463 184.26 634 469 184.27 639 476 184.28 644 482 184.29 649 489 184.30 654 495 184.31 659 502 184.32 664 508 184.33 669 515 184.34 674 522 184.35 679 529 184.36 685 535 184.37 690 542 184.38 695 549 184.39 700 556 184.40 705 563 184.41 710 570 184.42 715 577 184.43 720 585 184.44 725 592 184.45 730 599 184.46 736 606 184.47 741 614 184.48 746 621 184.49 751 629 184.50 756 636 184.51 761 644 184.52 766 651 184.53 771 659 184.54 776 667 184.55 782 675 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.56 787 683 184.57 792 690 184.58 797 698 184.59 802 706 184.60 807 714 184.61 812 722 184.62 817 731 184.63 822 739 184.64 827 747 184.65 833 755 184.66 838 764 184.67 843 772 184.68 848 781 184.69 853 789 184.70 858 798 184.71 863 806 184.72 868 815 184.73 873 824 184.74 878 832 184.75 884 841 184.76 889 850 184.77 894 859 184.78 899 868 184.79 904 877 184.80 909 886 184.81 914 895 184.82 919 904 184.83 924 913 184.84 929 923 184.85 934 932 184.86 940 941 184.87 945 951 184.88 950 960 184.89 955 970 184.90 960 979 184.91 965 989 184.92 970 999 184.93 975 1,008 184.94 980 1,018 184.95 985 1,028 184.96 991 1,038 184.97 996 1,048 184.98 1,001 1,058 184.99 1,006 1,068 185.00 1,011 1,078 185.01 1,016 1,088 185.02 1,021 1,098 185.03 1,026 1,109 185.04 1,031 1,119 185.05 1,037 1,129 185.06 1,042 1,140 185.07 1,047 1,150 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 124HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 185.08 1,052 1,161 185.09 1,057 1,171 185.10 1,062 1,182 185.11 1,067 1,192 185.12 1,072 1,203 185.13 1,077 1,214 185.14 1,082 1,225 185.15 1,088 1,235 185.16 1,093 1,246 185.17 1,098 1,257 185.18 1,103 1,268 185.19 1,108 1,279 185.20 1,113 1,290 185.21 1,118 1,302 185.22 1,123 1,313 185.23 1,128 1,324 185.24 1,133 1,335 185.25 1,138 1,347 185.26 1,144 1,358 185.27 1,149 1,370 185.28 1,154 1,381 185.29 1,159 1,393 185.30 1,164 1,404 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 125HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-B: Rain Garden B Inflow Area = 10,641 sf, 41.23% Impervious, Inflow Depth = 4.03" for 25-Year event Inflow = 1.18 cfs @ 12.07 hrs, Volume= 3,573 cf Outflow = 0.37 cfs @ 12.39 hrs, Volume= 3,573 cf, Atten= 69%, Lag= 18.9 min Discarded = 0.06 cfs @ 12.39 hrs, Volume= 3,110 cf Primary = 0.31 cfs @ 12.39 hrs, Volume= 464 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 158.04' @ 12.39 hrs Surf.Area= 1,051 sf Storage= 1,485 cf Plug-Flow detention time= 253.5 min calculated for 3,572 cf (100% of inflow) Center-of-Mass det. time= 253.5 min ( 1,063.1 - 809.6 ) Volume Invert Avail.Storage Storage Description #1 156.00' 1,767 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 156.00 437 0 0 157.00 704 571 571 158.00 1,037 871 1,441 158.30 1,135 326 1,767 Device Routing Invert Outlet Devices #1 Primary 158.00'15.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 156.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 12.39 hrs HW=158.04' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=0.30 cfs @ 12.39 hrs HW=158.04' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.30 cfs @ 0.48 fps) Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 126HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.00 0.00 0.00 0.00 156.01 0.02 0.02 0.00 156.02 0.02 0.02 0.00 156.03 0.02 0.02 0.00 156.04 0.02 0.02 0.00 156.05 0.03 0.03 0.00 156.06 0.03 0.03 0.00 156.07 0.03 0.03 0.00 156.08 0.03 0.03 0.00 156.09 0.03 0.03 0.00 156.10 0.03 0.03 0.00 156.11 0.03 0.03 0.00 156.12 0.03 0.03 0.00 156.13 0.03 0.03 0.00 156.14 0.03 0.03 0.00 156.15 0.03 0.03 0.00 156.16 0.03 0.03 0.00 156.17 0.03 0.03 0.00 156.18 0.03 0.03 0.00 156.19 0.03 0.03 0.00 156.20 0.03 0.03 0.00 156.21 0.03 0.03 0.00 156.22 0.03 0.03 0.00 156.23 0.03 0.03 0.00 156.24 0.03 0.03 0.00 156.25 0.03 0.03 0.00 156.26 0.03 0.03 0.00 156.27 0.03 0.03 0.00 156.28 0.03 0.03 0.00 156.29 0.03 0.03 0.00 156.30 0.03 0.03 0.00 156.31 0.03 0.03 0.00 156.32 0.03 0.03 0.00 156.33 0.03 0.03 0.00 156.34 0.03 0.03 0.00 156.35 0.03 0.03 0.00 156.36 0.03 0.03 0.00 156.37 0.03 0.03 0.00 156.38 0.03 0.03 0.00 156.39 0.03 0.03 0.00 156.40 0.03 0.03 0.00 156.41 0.03 0.03 0.00 156.42 0.03 0.03 0.00 156.43 0.03 0.03 0.00 156.44 0.03 0.03 0.00 156.45 0.03 0.03 0.00 156.46 0.03 0.03 0.00 156.47 0.03 0.03 0.00 156.48 0.03 0.03 0.00 156.49 0.03 0.03 0.00 156.50 0.03 0.03 0.00 156.51 0.03 0.03 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.52 0.03 0.03 0.00 156.53 0.03 0.03 0.00 156.54 0.03 0.03 0.00 156.55 0.03 0.03 0.00 156.56 0.03 0.03 0.00 156.57 0.03 0.03 0.00 156.58 0.03 0.03 0.00 156.59 0.03 0.03 0.00 156.60 0.03 0.03 0.00 156.61 0.03 0.03 0.00 156.62 0.03 0.03 0.00 156.63 0.03 0.03 0.00 156.64 0.03 0.03 0.00 156.65 0.03 0.03 0.00 156.66 0.03 0.03 0.00 156.67 0.03 0.03 0.00 156.68 0.03 0.03 0.00 156.69 0.03 0.03 0.00 156.70 0.03 0.03 0.00 156.71 0.03 0.03 0.00 156.72 0.03 0.03 0.00 156.73 0.04 0.04 0.00 156.74 0.04 0.04 0.00 156.75 0.04 0.04 0.00 156.76 0.04 0.04 0.00 156.77 0.04 0.04 0.00 156.78 0.04 0.04 0.00 156.79 0.04 0.04 0.00 156.80 0.04 0.04 0.00 156.81 0.04 0.04 0.00 156.82 0.04 0.04 0.00 156.83 0.04 0.04 0.00 156.84 0.04 0.04 0.00 156.85 0.04 0.04 0.00 156.86 0.04 0.04 0.00 156.87 0.04 0.04 0.00 156.88 0.04 0.04 0.00 156.89 0.04 0.04 0.00 156.90 0.04 0.04 0.00 156.91 0.04 0.04 0.00 156.92 0.04 0.04 0.00 156.93 0.04 0.04 0.00 156.94 0.04 0.04 0.00 156.95 0.04 0.04 0.00 156.96 0.04 0.04 0.00 156.97 0.04 0.04 0.00 156.98 0.04 0.04 0.00 156.99 0.04 0.04 0.00 157.00 0.04 0.04 0.00 157.01 0.04 0.04 0.00 157.02 0.04 0.04 0.00 157.03 0.04 0.04 0.00 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 127HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.04 0.04 0.04 0.00 157.05 0.04 0.04 0.00 157.06 0.04 0.04 0.00 157.07 0.04 0.04 0.00 157.08 0.04 0.04 0.00 157.09 0.04 0.04 0.00 157.10 0.04 0.04 0.00 157.11 0.04 0.04 0.00 157.12 0.04 0.04 0.00 157.13 0.04 0.04 0.00 157.14 0.04 0.04 0.00 157.15 0.04 0.04 0.00 157.16 0.04 0.04 0.00 157.17 0.04 0.04 0.00 157.18 0.04 0.04 0.00 157.19 0.04 0.04 0.00 157.20 0.04 0.04 0.00 157.21 0.04 0.04 0.00 157.22 0.04 0.04 0.00 157.23 0.04 0.04 0.00 157.24 0.04 0.04 0.00 157.25 0.04 0.04 0.00 157.26 0.04 0.04 0.00 157.27 0.04 0.04 0.00 157.28 0.04 0.04 0.00 157.29 0.04 0.04 0.00 157.30 0.04 0.04 0.00 157.31 0.04 0.04 0.00 157.32 0.05 0.05 0.00 157.33 0.05 0.05 0.00 157.34 0.05 0.05 0.00 157.35 0.05 0.05 0.00 157.36 0.05 0.05 0.00 157.37 0.05 0.05 0.00 157.38 0.05 0.05 0.00 157.39 0.05 0.05 0.00 157.40 0.05 0.05 0.00 157.41 0.05 0.05 0.00 157.42 0.05 0.05 0.00 157.43 0.05 0.05 0.00 157.44 0.05 0.05 0.00 157.45 0.05 0.05 0.00 157.46 0.05 0.05 0.00 157.47 0.05 0.05 0.00 157.48 0.05 0.05 0.00 157.49 0.05 0.05 0.00 157.50 0.05 0.05 0.00 157.51 0.05 0.05 0.00 157.52 0.05 0.05 0.00 157.53 0.05 0.05 0.00 157.54 0.05 0.05 0.00 157.55 0.05 0.05 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.56 0.05 0.05 0.00 157.57 0.05 0.05 0.00 157.58 0.05 0.05 0.00 157.59 0.05 0.05 0.00 157.60 0.05 0.05 0.00 157.61 0.05 0.05 0.00 157.62 0.05 0.05 0.00 157.63 0.05 0.05 0.00 157.64 0.05 0.05 0.00 157.65 0.05 0.05 0.00 157.66 0.05 0.05 0.00 157.67 0.05 0.05 0.00 157.68 0.05 0.05 0.00 157.69 0.05 0.05 0.00 157.70 0.05 0.05 0.00 157.71 0.05 0.05 0.00 157.72 0.05 0.05 0.00 157.73 0.05 0.05 0.00 157.74 0.05 0.05 0.00 157.75 0.05 0.05 0.00 157.76 0.05 0.05 0.00 157.77 0.05 0.05 0.00 157.78 0.05 0.05 0.00 157.79 0.05 0.05 0.00 157.80 0.05 0.05 0.00 157.81 0.05 0.05 0.00 157.82 0.05 0.05 0.00 157.83 0.05 0.05 0.00 157.84 0.05 0.05 0.00 157.85 0.05 0.05 0.00 157.86 0.06 0.06 0.00 157.87 0.06 0.06 0.00 157.88 0.06 0.06 0.00 157.89 0.06 0.06 0.00 157.90 0.06 0.06 0.00 157.91 0.06 0.06 0.00 157.92 0.06 0.06 0.00 157.93 0.06 0.06 0.00 157.94 0.06 0.06 0.00 157.95 0.06 0.06 0.00 157.96 0.06 0.06 0.00 157.97 0.06 0.06 0.00 157.98 0.06 0.06 0.00 157.99 0.06 0.06 0.00 158.00 0.06 0.06 0.00 158.01 0.09 0.06 0.04 158.02 0.16 0.06 0.10 158.03 0.24 0.06 0.19 158.04 0.34 0.06 0.29 158.05 0.46 0.06 0.40 158.06 0.58 0.06 0.52 158.07 0.72 0.06 0.66 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 128HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 158.08 0.87 0.06 0.81 158.09 1.02 0.06 0.96 158.10 1.19 0.06 1.13 158.11 1.36 0.06 1.30 158.12 1.54 0.06 1.48 158.13 1.73 0.06 1.67 158.14 1.93 0.06 1.87 158.15 2.13 0.06 2.07 158.16 2.35 0.06 2.28 158.17 2.56 0.06 2.50 158.18 2.79 0.06 2.73 158.19 3.02 0.06 2.96 158.20 3.25 0.06 3.19 158.21 3.51 0.06 3.45 158.22 3.77 0.06 3.71 158.23 4.04 0.06 3.98 158.24 4.32 0.06 4.25 158.25 4.60 0.06 4.54 158.26 4.89 0.06 4.83 158.27 5.19 0.06 5.13 158.28 5.49 0.06 5.43 158.29 5.81 0.06 5.74 158.30 6.13 0.06 6.06 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 129HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.00 437 0 156.01 440 4 156.02 442 9 156.03 445 13 156.04 448 18 156.05 450 22 156.06 453 27 156.07 456 31 156.08 458 36 156.09 461 40 156.10 464 45 156.11 466 50 156.12 469 54 156.13 472 59 156.14 474 64 156.15 477 69 156.16 480 73 156.17 482 78 156.18 485 83 156.19 488 88 156.20 490 93 156.21 493 98 156.22 496 103 156.23 498 108 156.24 501 113 156.25 504 118 156.26 506 123 156.27 509 128 156.28 512 133 156.29 514 138 156.30 517 143 156.31 520 148 156.32 522 154 156.33 525 159 156.34 528 164 156.35 530 169 156.36 533 175 156.37 536 180 156.38 538 185 156.39 541 191 156.40 544 196 156.41 546 202 156.42 549 207 156.43 552 213 156.44 554 218 156.45 557 224 156.46 560 229 156.47 562 235 156.48 565 241 156.49 568 246 156.50 571 252 156.51 573 258 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.52 576 263 156.53 579 269 156.54 581 275 156.55 584 281 156.56 587 287 156.57 589 292 156.58 592 298 156.59 595 304 156.60 597 310 156.61 600 316 156.62 603 322 156.63 605 328 156.64 608 334 156.65 611 340 156.66 613 347 156.67 616 353 156.68 619 359 156.69 621 365 156.70 624 371 156.71 627 378 156.72 629 384 156.73 632 390 156.74 635 396 156.75 637 403 156.76 640 409 156.77 643 416 156.78 645 422 156.79 648 429 156.80 651 435 156.81 653 442 156.82 656 448 156.83 659 455 156.84 661 461 156.85 664 468 156.86 667 475 156.87 669 481 156.88 672 488 156.89 675 495 156.90 677 501 156.91 680 508 156.92 683 515 156.93 685 522 156.94 688 529 156.95 691 536 156.96 693 543 156.97 696 550 156.98 699 556 156.99 701 563 157.00 704 571 157.01 707 578 157.02 711 585 157.03 714 592 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 130HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.04 717 599 157.05 721 606 157.06 724 613 157.07 727 621 157.08 731 628 157.09 734 635 157.10 737 643 157.11 741 650 157.12 744 657 157.13 747 665 157.14 751 672 157.15 754 680 157.16 757 687 157.17 761 695 157.18 764 703 157.19 767 710 157.20 771 718 157.21 774 726 157.22 777 733 157.23 781 741 157.24 784 749 157.25 787 757 157.26 791 765 157.27 794 773 157.28 797 781 157.29 801 789 157.30 804 797 157.31 807 805 157.32 811 813 157.33 814 821 157.34 817 829 157.35 821 837 157.36 824 846 157.37 827 854 157.38 831 862 157.39 834 870 157.40 837 879 157.41 841 887 157.42 844 896 157.43 847 904 157.44 851 912 157.45 854 921 157.46 857 930 157.47 861 938 157.48 864 947 157.49 867 955 157.50 871 964 157.51 874 973 157.52 877 982 157.53 880 990 157.54 884 999 157.55 887 1,008 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.56 890 1,017 157.57 894 1,026 157.58 897 1,035 157.59 900 1,044 157.60 904 1,053 157.61 907 1,062 157.62 910 1,071 157.63 914 1,080 157.64 917 1,089 157.65 920 1,098 157.66 924 1,108 157.67 927 1,117 157.68 930 1,126 157.69 934 1,136 157.70 937 1,145 157.71 940 1,154 157.72 944 1,164 157.73 947 1,173 157.74 950 1,183 157.75 954 1,192 157.76 957 1,202 157.77 960 1,211 157.78 964 1,221 157.79 967 1,231 157.80 970 1,240 157.81 974 1,250 157.82 977 1,260 157.83 980 1,270 157.84 984 1,279 157.85 987 1,289 157.86 990 1,299 157.87 994 1,309 157.88 997 1,319 157.89 1,000 1,329 157.90 1,004 1,339 157.91 1,007 1,349 157.92 1,010 1,359 157.93 1,014 1,369 157.94 1,017 1,379 157.95 1,020 1,390 157.96 1,024 1,400 157.97 1,027 1,410 157.98 1,030 1,420 157.99 1,034 1,431 158.00 1,037 1,441 158.01 1,040 1,451 158.02 1,044 1,462 158.03 1,047 1,472 158.04 1,050 1,483 158.05 1,053 1,493 158.06 1,057 1,504 158.07 1,060 1,514 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 131HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 158.08 1,063 1,525 158.09 1,066 1,536 158.10 1,070 1,546 158.11 1,073 1,557 158.12 1,076 1,568 158.13 1,079 1,579 158.14 1,083 1,589 158.15 1,086 1,600 158.16 1,089 1,611 158.17 1,093 1,622 158.18 1,096 1,633 158.19 1,099 1,644 158.20 1,102 1,655 158.21 1,106 1,666 158.22 1,109 1,677 158.23 1,112 1,688 158.24 1,115 1,699 158.25 1,119 1,710 158.26 1,122 1,722 158.27 1,125 1,733 158.28 1,128 1,744 158.29 1,132 1,755 158.30 1,135 1,767 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 132HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond SWB: Stormtech MC 3500 (SWM-B) Inflow Area = 16,665 sf,100.00% Impervious, Inflow Depth = 5.92" for 25-Year event Inflow = 2.38 cfs @ 12.07 hrs, Volume= 8,224 cf Outflow = 0.10 cfs @ 14.55 hrs, Volume= 8,224 cf, Atten= 96%, Lag= 148.7 min Discarded = 0.10 cfs @ 9.58 hrs, Volume= 8,195 cf Primary = 0.01 cfs @ 14.55 hrs, Volume= 29 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 179.04' @ 14.55 hrs Surf.Area= 1,738 sf Storage= 3,964 cf Plug-Flow detention time= 339.9 min calculated for 8,221 cf (100% of inflow) Center-of-Mass det. time= 339.9 min ( 1,083.7 - 743.8 ) Volume Invert Avail.Storage Storage Description #1A 175.65' 2,580 cf 8.42'W x 206.46'L x 5.50'H Field A 9,557 cf Overall - 3,108 cf Embedded = 6,449 cf x 40.0% Voids #2A 176.40' 3,108 cf ADS_StormTech MC-3500 d +Cap x 28 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 5,688 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 175.65'15.0" Round Outlet Pipe L= 45.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 175.65' / 166.00' S= 0.2144 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf #2 Device 1 179.00'6.0" Vert. Low Flow Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 180.25'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 #4 Discarded 175.65'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 9.58 hrs HW=175.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.00 cfs @ 14.55 hrs HW=179.04' (Free Discharge) 1=Outlet Pipe (Passes 0.00 cfs of 9.82 cfs potential flow) 2=Low Flow Orifice (Orifice Controls 0.00 cfs @ 0.67 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 133HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pond SWB: Stormtech MC 3500 (SWM-B) - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 28 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 204.46' Row Length +12.0" End Stone x 2 = 206.46' Base Length 1 Rows x 77.0" Wide + 12.0" Side Stone x 2 = 8.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 12.0" Stone Cover = 5.50' Field Height 28 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 1 Rows = 3,108.5 cf Chamber Storage 9,557.4 cf Field - 3,108.5 cf Chambers = 6,448.9 cf Stone x 40.0% Voids = 2,579.6 cf Stone Storage Chamber Storage + Stone Storage = 5,688.0 cf = 0.131 af Overall Storage Efficiency = 59.5% Overall System Size = 206.46' x 8.42' x 5.50' 28 Chambers 354.0 cy Field 238.8 cy Stone Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 134HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 175.65 0.00 0.00 0.00 175.66 0.10 0.10 0.00 175.67 0.10 0.10 0.00 175.68 0.10 0.10 0.00 175.69 0.10 0.10 0.00 175.70 0.10 0.10 0.00 175.71 0.10 0.10 0.00 175.72 0.10 0.10 0.00 175.73 0.10 0.10 0.00 175.74 0.10 0.10 0.00 175.75 0.10 0.10 0.00 175.76 0.10 0.10 0.00 175.77 0.10 0.10 0.00 175.78 0.10 0.10 0.00 175.79 0.10 0.10 0.00 175.80 0.10 0.10 0.00 175.81 0.10 0.10 0.00 175.82 0.10 0.10 0.00 175.83 0.10 0.10 0.00 175.84 0.10 0.10 0.00 175.85 0.10 0.10 0.00 175.86 0.10 0.10 0.00 175.87 0.10 0.10 0.00 175.88 0.10 0.10 0.00 175.89 0.10 0.10 0.00 175.90 0.10 0.10 0.00 175.91 0.10 0.10 0.00 175.92 0.10 0.10 0.00 175.93 0.10 0.10 0.00 175.94 0.10 0.10 0.00 175.95 0.10 0.10 0.00 175.96 0.10 0.10 0.00 175.97 0.10 0.10 0.00 175.98 0.10 0.10 0.00 175.99 0.10 0.10 0.00 176.00 0.10 0.10 0.00 176.01 0.10 0.10 0.00 176.02 0.10 0.10 0.00 176.03 0.10 0.10 0.00 176.04 0.10 0.10 0.00 176.05 0.10 0.10 0.00 176.06 0.10 0.10 0.00 176.07 0.10 0.10 0.00 176.08 0.10 0.10 0.00 176.09 0.10 0.10 0.00 176.10 0.10 0.10 0.00 176.11 0.10 0.10 0.00 176.12 0.10 0.10 0.00 176.13 0.10 0.10 0.00 176.14 0.10 0.10 0.00 176.15 0.10 0.10 0.00 176.16 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.17 0.10 0.10 0.00 176.18 0.10 0.10 0.00 176.19 0.10 0.10 0.00 176.20 0.10 0.10 0.00 176.21 0.10 0.10 0.00 176.22 0.10 0.10 0.00 176.23 0.10 0.10 0.00 176.24 0.10 0.10 0.00 176.25 0.10 0.10 0.00 176.26 0.10 0.10 0.00 176.27 0.10 0.10 0.00 176.28 0.10 0.10 0.00 176.29 0.10 0.10 0.00 176.30 0.10 0.10 0.00 176.31 0.10 0.10 0.00 176.32 0.10 0.10 0.00 176.33 0.10 0.10 0.00 176.34 0.10 0.10 0.00 176.35 0.10 0.10 0.00 176.36 0.10 0.10 0.00 176.37 0.10 0.10 0.00 176.38 0.10 0.10 0.00 176.39 0.10 0.10 0.00 176.40 0.10 0.10 0.00 176.41 0.10 0.10 0.00 176.42 0.10 0.10 0.00 176.43 0.10 0.10 0.00 176.44 0.10 0.10 0.00 176.45 0.10 0.10 0.00 176.46 0.10 0.10 0.00 176.47 0.10 0.10 0.00 176.48 0.10 0.10 0.00 176.49 0.10 0.10 0.00 176.50 0.10 0.10 0.00 176.51 0.10 0.10 0.00 176.52 0.10 0.10 0.00 176.53 0.10 0.10 0.00 176.54 0.10 0.10 0.00 176.55 0.10 0.10 0.00 176.56 0.10 0.10 0.00 176.57 0.10 0.10 0.00 176.58 0.10 0.10 0.00 176.59 0.10 0.10 0.00 176.60 0.10 0.10 0.00 176.61 0.10 0.10 0.00 176.62 0.10 0.10 0.00 176.63 0.10 0.10 0.00 176.64 0.10 0.10 0.00 176.65 0.10 0.10 0.00 176.66 0.10 0.10 0.00 176.67 0.10 0.10 0.00 176.68 0.10 0.10 0.00 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 135HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.69 0.10 0.10 0.00 176.70 0.10 0.10 0.00 176.71 0.10 0.10 0.00 176.72 0.10 0.10 0.00 176.73 0.10 0.10 0.00 176.74 0.10 0.10 0.00 176.75 0.10 0.10 0.00 176.76 0.10 0.10 0.00 176.77 0.10 0.10 0.00 176.78 0.10 0.10 0.00 176.79 0.10 0.10 0.00 176.80 0.10 0.10 0.00 176.81 0.10 0.10 0.00 176.82 0.10 0.10 0.00 176.83 0.10 0.10 0.00 176.84 0.10 0.10 0.00 176.85 0.10 0.10 0.00 176.86 0.10 0.10 0.00 176.87 0.10 0.10 0.00 176.88 0.10 0.10 0.00 176.89 0.10 0.10 0.00 176.90 0.10 0.10 0.00 176.91 0.10 0.10 0.00 176.92 0.10 0.10 0.00 176.93 0.10 0.10 0.00 176.94 0.10 0.10 0.00 176.95 0.10 0.10 0.00 176.96 0.10 0.10 0.00 176.97 0.10 0.10 0.00 176.98 0.10 0.10 0.00 176.99 0.10 0.10 0.00 177.00 0.10 0.10 0.00 177.01 0.10 0.10 0.00 177.02 0.10 0.10 0.00 177.03 0.10 0.10 0.00 177.04 0.10 0.10 0.00 177.05 0.10 0.10 0.00 177.06 0.10 0.10 0.00 177.07 0.10 0.10 0.00 177.08 0.10 0.10 0.00 177.09 0.10 0.10 0.00 177.10 0.10 0.10 0.00 177.11 0.10 0.10 0.00 177.12 0.10 0.10 0.00 177.13 0.10 0.10 0.00 177.14 0.10 0.10 0.00 177.15 0.10 0.10 0.00 177.16 0.10 0.10 0.00 177.17 0.10 0.10 0.00 177.18 0.10 0.10 0.00 177.19 0.10 0.10 0.00 177.20 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.21 0.10 0.10 0.00 177.22 0.10 0.10 0.00 177.23 0.10 0.10 0.00 177.24 0.10 0.10 0.00 177.25 0.10 0.10 0.00 177.26 0.10 0.10 0.00 177.27 0.10 0.10 0.00 177.28 0.10 0.10 0.00 177.29 0.10 0.10 0.00 177.30 0.10 0.10 0.00 177.31 0.10 0.10 0.00 177.32 0.10 0.10 0.00 177.33 0.10 0.10 0.00 177.34 0.10 0.10 0.00 177.35 0.10 0.10 0.00 177.36 0.10 0.10 0.00 177.37 0.10 0.10 0.00 177.38 0.10 0.10 0.00 177.39 0.10 0.10 0.00 177.40 0.10 0.10 0.00 177.41 0.10 0.10 0.00 177.42 0.10 0.10 0.00 177.43 0.10 0.10 0.00 177.44 0.10 0.10 0.00 177.45 0.10 0.10 0.00 177.46 0.10 0.10 0.00 177.47 0.10 0.10 0.00 177.48 0.10 0.10 0.00 177.49 0.10 0.10 0.00 177.50 0.10 0.10 0.00 177.51 0.10 0.10 0.00 177.52 0.10 0.10 0.00 177.53 0.10 0.10 0.00 177.54 0.10 0.10 0.00 177.55 0.10 0.10 0.00 177.56 0.10 0.10 0.00 177.57 0.10 0.10 0.00 177.58 0.10 0.10 0.00 177.59 0.10 0.10 0.00 177.60 0.10 0.10 0.00 177.61 0.10 0.10 0.00 177.62 0.10 0.10 0.00 177.63 0.10 0.10 0.00 177.64 0.10 0.10 0.00 177.65 0.10 0.10 0.00 177.66 0.10 0.10 0.00 177.67 0.10 0.10 0.00 177.68 0.10 0.10 0.00 177.69 0.10 0.10 0.00 177.70 0.10 0.10 0.00 177.71 0.10 0.10 0.00 177.72 0.10 0.10 0.00 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 136HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.73 0.10 0.10 0.00 177.74 0.10 0.10 0.00 177.75 0.10 0.10 0.00 177.76 0.10 0.10 0.00 177.77 0.10 0.10 0.00 177.78 0.10 0.10 0.00 177.79 0.10 0.10 0.00 177.80 0.10 0.10 0.00 177.81 0.10 0.10 0.00 177.82 0.10 0.10 0.00 177.83 0.10 0.10 0.00 177.84 0.10 0.10 0.00 177.85 0.10 0.10 0.00 177.86 0.10 0.10 0.00 177.87 0.10 0.10 0.00 177.88 0.10 0.10 0.00 177.89 0.10 0.10 0.00 177.90 0.10 0.10 0.00 177.91 0.10 0.10 0.00 177.92 0.10 0.10 0.00 177.93 0.10 0.10 0.00 177.94 0.10 0.10 0.00 177.95 0.10 0.10 0.00 177.96 0.10 0.10 0.00 177.97 0.10 0.10 0.00 177.98 0.10 0.10 0.00 177.99 0.10 0.10 0.00 178.00 0.10 0.10 0.00 178.01 0.10 0.10 0.00 178.02 0.10 0.10 0.00 178.03 0.10 0.10 0.00 178.04 0.10 0.10 0.00 178.05 0.10 0.10 0.00 178.06 0.10 0.10 0.00 178.07 0.10 0.10 0.00 178.08 0.10 0.10 0.00 178.09 0.10 0.10 0.00 178.10 0.10 0.10 0.00 178.11 0.10 0.10 0.00 178.12 0.10 0.10 0.00 178.13 0.10 0.10 0.00 178.14 0.10 0.10 0.00 178.15 0.10 0.10 0.00 178.16 0.10 0.10 0.00 178.17 0.10 0.10 0.00 178.18 0.10 0.10 0.00 178.19 0.10 0.10 0.00 178.20 0.10 0.10 0.00 178.21 0.10 0.10 0.00 178.22 0.10 0.10 0.00 178.23 0.10 0.10 0.00 178.24 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.25 0.10 0.10 0.00 178.26 0.10 0.10 0.00 178.27 0.10 0.10 0.00 178.28 0.10 0.10 0.00 178.29 0.10 0.10 0.00 178.30 0.10 0.10 0.00 178.31 0.10 0.10 0.00 178.32 0.10 0.10 0.00 178.33 0.10 0.10 0.00 178.34 0.10 0.10 0.00 178.35 0.10 0.10 0.00 178.36 0.10 0.10 0.00 178.37 0.10 0.10 0.00 178.38 0.10 0.10 0.00 178.39 0.10 0.10 0.00 178.40 0.10 0.10 0.00 178.41 0.10 0.10 0.00 178.42 0.10 0.10 0.00 178.43 0.10 0.10 0.00 178.44 0.10 0.10 0.00 178.45 0.10 0.10 0.00 178.46 0.10 0.10 0.00 178.47 0.10 0.10 0.00 178.48 0.10 0.10 0.00 178.49 0.10 0.10 0.00 178.50 0.10 0.10 0.00 178.51 0.10 0.10 0.00 178.52 0.10 0.10 0.00 178.53 0.10 0.10 0.00 178.54 0.10 0.10 0.00 178.55 0.10 0.10 0.00 178.56 0.10 0.10 0.00 178.57 0.10 0.10 0.00 178.58 0.10 0.10 0.00 178.59 0.10 0.10 0.00 178.60 0.10 0.10 0.00 178.61 0.10 0.10 0.00 178.62 0.10 0.10 0.00 178.63 0.10 0.10 0.00 178.64 0.10 0.10 0.00 178.65 0.10 0.10 0.00 178.66 0.10 0.10 0.00 178.67 0.10 0.10 0.00 178.68 0.10 0.10 0.00 178.69 0.10 0.10 0.00 178.70 0.10 0.10 0.00 178.71 0.10 0.10 0.00 178.72 0.10 0.10 0.00 178.73 0.10 0.10 0.00 178.74 0.10 0.10 0.00 178.75 0.10 0.10 0.00 178.76 0.10 0.10 0.00 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 137HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.77 0.10 0.10 0.00 178.78 0.10 0.10 0.00 178.79 0.10 0.10 0.00 178.80 0.10 0.10 0.00 178.81 0.10 0.10 0.00 178.82 0.10 0.10 0.00 178.83 0.10 0.10 0.00 178.84 0.10 0.10 0.00 178.85 0.10 0.10 0.00 178.86 0.10 0.10 0.00 178.87 0.10 0.10 0.00 178.88 0.10 0.10 0.00 178.89 0.10 0.10 0.00 178.90 0.10 0.10 0.00 178.91 0.10 0.10 0.00 178.92 0.10 0.10 0.00 178.93 0.10 0.10 0.00 178.94 0.10 0.10 0.00 178.95 0.10 0.10 0.00 178.96 0.10 0.10 0.00 178.97 0.10 0.10 0.00 178.98 0.10 0.10 0.00 178.99 0.10 0.10 0.00 179.00 0.10 0.10 0.00 179.01 0.10 0.10 0.00 179.02 0.10 0.10 0.00 179.03 0.10 0.10 0.00 179.04 0.10 0.10 0.01 179.05 0.10 0.10 0.01 179.06 0.11 0.10 0.01 179.07 0.11 0.10 0.02 179.08 0.12 0.10 0.02 179.09 0.12 0.10 0.02 179.10 0.13 0.10 0.03 179.11 0.13 0.10 0.04 179.12 0.14 0.10 0.04 179.13 0.15 0.10 0.05 179.14 0.15 0.10 0.06 179.15 0.16 0.10 0.07 179.16 0.17 0.10 0.07 179.17 0.18 0.10 0.08 179.18 0.19 0.10 0.09 179.19 0.20 0.10 0.10 179.20 0.21 0.10 0.11 179.21 0.22 0.10 0.12 179.22 0.23 0.10 0.13 179.23 0.24 0.10 0.14 179.24 0.25 0.10 0.16 179.25 0.26 0.10 0.17 179.26 0.28 0.10 0.18 179.27 0.29 0.10 0.19 179.28 0.30 0.10 0.20 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.29 0.31 0.10 0.22 179.30 0.33 0.10 0.23 179.31 0.34 0.10 0.24 179.32 0.35 0.10 0.26 179.33 0.37 0.10 0.27 179.34 0.38 0.10 0.28 179.35 0.39 0.10 0.30 179.36 0.41 0.10 0.31 179.37 0.42 0.10 0.32 179.38 0.43 0.10 0.34 179.39 0.45 0.10 0.35 179.40 0.46 0.10 0.36 179.41 0.47 0.10 0.38 179.42 0.49 0.10 0.39 179.43 0.50 0.10 0.40 179.44 0.51 0.10 0.41 179.45 0.52 0.10 0.43 179.46 0.53 0.10 0.44 179.47 0.54 0.10 0.45 179.48 0.55 0.10 0.46 179.49 0.56 0.10 0.47 179.50 0.57 0.10 0.47 179.51 0.58 0.10 0.48 179.52 0.59 0.10 0.49 179.53 0.60 0.10 0.50 179.54 0.61 0.10 0.51 179.55 0.61 0.10 0.52 179.56 0.62 0.10 0.53 179.57 0.63 0.10 0.53 179.58 0.64 0.10 0.54 179.59 0.65 0.10 0.55 179.60 0.66 0.10 0.56 179.61 0.66 0.10 0.57 179.62 0.67 0.10 0.58 179.63 0.68 0.10 0.58 179.64 0.69 0.10 0.59 179.65 0.69 0.10 0.60 179.66 0.70 0.10 0.61 179.67 0.71 0.10 0.61 179.68 0.72 0.10 0.62 179.69 0.72 0.10 0.63 179.70 0.73 0.10 0.63 179.71 0.74 0.10 0.64 179.72 0.74 0.10 0.65 179.73 0.75 0.10 0.66 179.74 0.76 0.10 0.66 179.75 0.77 0.10 0.67 179.76 0.77 0.10 0.68 179.77 0.78 0.10 0.68 179.78 0.78 0.10 0.69 179.79 0.79 0.10 0.69 179.80 0.80 0.10 0.70 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 138HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.81 0.80 0.10 0.71 179.82 0.81 0.10 0.71 179.83 0.82 0.10 0.72 179.84 0.82 0.10 0.73 179.85 0.83 0.10 0.73 179.86 0.83 0.10 0.74 179.87 0.84 0.10 0.74 179.88 0.85 0.10 0.75 179.89 0.85 0.10 0.76 179.90 0.86 0.10 0.76 179.91 0.86 0.10 0.77 179.92 0.87 0.10 0.77 179.93 0.88 0.10 0.78 179.94 0.88 0.10 0.79 179.95 0.89 0.10 0.79 179.96 0.89 0.10 0.80 179.97 0.90 0.10 0.80 179.98 0.90 0.10 0.81 179.99 0.91 0.10 0.81 180.00 0.92 0.10 0.82 180.01 0.92 0.10 0.82 180.02 0.93 0.10 0.83 180.03 0.93 0.10 0.83 180.04 0.94 0.10 0.84 180.05 0.94 0.10 0.85 180.06 0.95 0.10 0.85 180.07 0.95 0.10 0.86 180.08 0.96 0.10 0.86 180.09 0.96 0.10 0.87 180.10 0.97 0.10 0.87 180.11 0.97 0.10 0.88 180.12 0.98 0.10 0.88 180.13 0.98 0.10 0.89 180.14 0.99 0.10 0.89 180.15 0.99 0.10 0.90 180.16 1.00 0.10 0.90 180.17 1.00 0.10 0.91 180.18 1.01 0.10 0.91 180.19 1.01 0.10 0.92 180.20 1.02 0.10 0.92 180.21 1.02 0.10 0.93 180.22 1.03 0.10 0.93 180.23 1.03 0.10 0.94 180.24 1.04 0.10 0.94 180.25 1.04 0.10 0.95 180.26 1.06 0.10 0.96 180.27 1.08 0.10 0.99 180.28 1.11 0.10 1.02 180.29 1.15 0.10 1.05 180.30 1.19 0.10 1.09 180.31 1.23 0.10 1.14 180.32 1.28 0.10 1.19 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.33 1.33 0.10 1.24 180.34 1.39 0.10 1.29 180.35 1.44 0.10 1.35 180.36 1.50 0.10 1.40 180.37 1.56 0.10 1.47 180.38 1.63 0.10 1.53 180.39 1.69 0.10 1.60 180.40 1.76 0.10 1.66 180.41 1.83 0.10 1.74 180.42 1.90 0.10 1.81 180.43 1.98 0.10 1.88 180.44 2.06 0.10 1.96 180.45 2.13 0.10 2.04 180.46 2.22 0.10 2.12 180.47 2.30 0.10 2.20 180.48 2.39 0.10 2.29 180.49 2.48 0.10 2.38 180.50 2.57 0.10 2.47 180.51 2.66 0.10 2.57 180.52 2.76 0.10 2.66 180.53 2.85 0.10 2.76 180.54 2.95 0.10 2.86 180.55 3.05 0.10 2.96 180.56 3.16 0.10 3.06 180.57 3.26 0.10 3.17 180.58 3.37 0.10 3.27 180.59 3.48 0.10 3.38 180.60 3.59 0.10 3.49 180.61 3.70 0.10 3.60 180.62 3.82 0.10 3.72 180.63 3.93 0.10 3.84 180.64 4.05 0.10 3.95 180.65 4.17 0.10 4.07 180.66 4.29 0.10 4.20 180.67 4.42 0.10 4.32 180.68 4.55 0.10 4.45 180.69 4.68 0.10 4.58 180.70 4.81 0.10 4.71 180.71 4.94 0.10 4.85 180.72 5.08 0.10 4.98 180.73 5.22 0.10 5.12 180.74 5.36 0.10 5.26 180.75 5.50 0.10 5.40 180.76 5.64 0.10 5.54 180.77 5.79 0.10 5.69 180.78 5.93 0.10 5.84 180.79 6.08 0.10 5.99 180.80 6.23 0.10 6.14 180.81 6.39 0.10 6.29 180.82 6.54 0.10 6.45 180.83 6.70 0.10 6.60 180.84 6.86 0.10 6.76 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 139HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.85 7.02 0.10 6.92 180.86 7.19 0.10 7.09 180.87 7.36 0.10 7.26 180.88 7.53 0.10 7.43 180.89 7.71 0.10 7.61 180.90 7.88 0.10 7.79 180.91 8.06 0.10 7.97 180.92 8.24 0.10 8.15 180.93 8.43 0.10 8.33 180.94 8.61 0.10 8.52 180.95 8.80 0.10 8.71 180.96 8.99 0.10 8.90 180.97 9.19 0.10 9.09 180.98 9.38 0.10 9.28 180.99 9.58 0.10 9.48 181.00 9.78 0.10 9.68 181.01 9.98 0.10 9.88 181.02 10.18 0.10 10.09 181.03 10.39 0.10 10.29 181.04 10.60 0.10 10.50 181.05 10.81 0.10 10.71 181.06 10.99 0.10 10.90 181.07 11.18 0.10 11.08 181.08 11.37 0.10 11.27 181.09 11.55 0.10 11.46 181.10 11.74 0.10 11.65 181.11 11.93 0.10 11.84 181.12 12.12 0.10 12.03 181.13 12.32 0.10 12.22 181.14 12.51 0.10 12.41 181.15 12.70 0.10 12.61 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 140HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 175.65 1,738 0 175.66 1,738 7 175.67 1,738 14 175.68 1,738 21 175.69 1,738 28 175.70 1,738 35 175.71 1,738 42 175.72 1,738 49 175.73 1,738 56 175.74 1,738 63 175.75 1,738 70 175.76 1,738 76 175.77 1,738 83 175.78 1,738 90 175.79 1,738 97 175.80 1,738 104 175.81 1,738 111 175.82 1,738 118 175.83 1,738 125 175.84 1,738 132 175.85 1,738 139 175.86 1,738 146 175.87 1,738 153 175.88 1,738 160 175.89 1,738 167 175.90 1,738 174 175.91 1,738 181 175.92 1,738 188 175.93 1,738 195 175.94 1,738 202 175.95 1,738 209 175.96 1,738 215 175.97 1,738 222 175.98 1,738 229 175.99 1,738 236 176.00 1,738 243 176.01 1,738 250 176.02 1,738 257 176.03 1,738 264 176.04 1,738 271 176.05 1,738 278 176.06 1,738 285 176.07 1,738 292 176.08 1,738 299 176.09 1,738 306 176.10 1,738 313 176.11 1,738 320 176.12 1,738 327 176.13 1,738 334 176.14 1,738 341 176.15 1,738 348 176.16 1,738 354 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.17 1,738 361 176.18 1,738 368 176.19 1,738 375 176.20 1,738 382 176.21 1,738 389 176.22 1,738 396 176.23 1,738 403 176.24 1,738 410 176.25 1,738 417 176.26 1,738 424 176.27 1,738 431 176.28 1,738 438 176.29 1,738 445 176.30 1,738 452 176.31 1,738 459 176.32 1,738 466 176.33 1,738 473 176.34 1,738 480 176.35 1,738 487 176.36 1,738 494 176.37 1,738 500 176.38 1,738 507 176.39 1,738 514 176.40 1,738 521 176.41 1,738 535 176.42 1,738 549 176.43 1,738 564 176.44 1,738 578 176.45 1,738 592 176.46 1,738 606 176.47 1,738 620 176.48 1,738 634 176.49 1,738 648 176.50 1,738 662 176.51 1,738 676 176.52 1,738 690 176.53 1,738 704 176.54 1,738 718 176.55 1,738 732 176.56 1,738 746 176.57 1,738 760 176.58 1,738 774 176.59 1,738 788 176.60 1,738 802 176.61 1,738 816 176.62 1,738 830 176.63 1,738 844 176.64 1,738 858 176.65 1,738 872 176.66 1,738 886 176.67 1,738 900 176.68 1,738 914 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 141HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.69 1,738 928 176.70 1,738 942 176.71 1,738 956 176.72 1,738 970 176.73 1,738 984 176.74 1,738 998 176.75 1,738 1,012 176.76 1,738 1,025 176.77 1,738 1,039 176.78 1,738 1,053 176.79 1,738 1,067 176.80 1,738 1,081 176.81 1,738 1,095 176.82 1,738 1,109 176.83 1,738 1,123 176.84 1,738 1,137 176.85 1,738 1,150 176.86 1,738 1,164 176.87 1,738 1,178 176.88 1,738 1,192 176.89 1,738 1,206 176.90 1,738 1,220 176.91 1,738 1,233 176.92 1,738 1,247 176.93 1,738 1,261 176.94 1,738 1,275 176.95 1,738 1,289 176.96 1,738 1,303 176.97 1,738 1,316 176.98 1,738 1,330 176.99 1,738 1,344 177.00 1,738 1,358 177.01 1,738 1,371 177.02 1,738 1,385 177.03 1,738 1,399 177.04 1,738 1,413 177.05 1,738 1,427 177.06 1,738 1,440 177.07 1,738 1,454 177.08 1,738 1,468 177.09 1,738 1,481 177.10 1,738 1,495 177.11 1,738 1,509 177.12 1,738 1,523 177.13 1,738 1,536 177.14 1,738 1,550 177.15 1,738 1,564 177.16 1,738 1,577 177.17 1,738 1,591 177.18 1,738 1,605 177.19 1,738 1,618 177.20 1,738 1,632 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.21 1,738 1,646 177.22 1,738 1,659 177.23 1,738 1,673 177.24 1,738 1,686 177.25 1,738 1,700 177.26 1,738 1,714 177.27 1,738 1,727 177.28 1,738 1,741 177.29 1,738 1,754 177.30 1,738 1,768 177.31 1,738 1,782 177.32 1,738 1,795 177.33 1,738 1,809 177.34 1,738 1,822 177.35 1,738 1,836 177.36 1,738 1,849 177.37 1,738 1,863 177.38 1,738 1,876 177.39 1,738 1,890 177.40 1,738 1,903 177.41 1,738 1,917 177.42 1,738 1,930 177.43 1,738 1,944 177.44 1,738 1,957 177.45 1,738 1,971 177.46 1,738 1,984 177.47 1,738 1,998 177.48 1,738 2,011 177.49 1,738 2,025 177.50 1,738 2,038 177.51 1,738 2,051 177.52 1,738 2,065 177.53 1,738 2,078 177.54 1,738 2,092 177.55 1,738 2,105 177.56 1,738 2,118 177.57 1,738 2,132 177.58 1,738 2,145 177.59 1,738 2,158 177.60 1,738 2,172 177.61 1,738 2,185 177.62 1,738 2,198 177.63 1,738 2,212 177.64 1,738 2,225 177.65 1,738 2,238 177.66 1,738 2,252 177.67 1,738 2,265 177.68 1,738 2,278 177.69 1,738 2,291 177.70 1,738 2,305 177.71 1,738 2,318 177.72 1,738 2,331 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 142HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.73 1,738 2,344 177.74 1,738 2,358 177.75 1,738 2,371 177.76 1,738 2,384 177.77 1,738 2,397 177.78 1,738 2,410 177.79 1,738 2,423 177.80 1,738 2,437 177.81 1,738 2,450 177.82 1,738 2,463 177.83 1,738 2,476 177.84 1,738 2,489 177.85 1,738 2,502 177.86 1,738 2,515 177.87 1,738 2,528 177.88 1,738 2,541 177.89 1,738 2,554 177.90 1,738 2,567 177.91 1,738 2,581 177.92 1,738 2,594 177.93 1,738 2,607 177.94 1,738 2,620 177.95 1,738 2,633 177.96 1,738 2,646 177.97 1,738 2,658 177.98 1,738 2,671 177.99 1,738 2,684 178.00 1,738 2,697 178.01 1,738 2,710 178.02 1,738 2,723 178.03 1,738 2,736 178.04 1,738 2,749 178.05 1,738 2,762 178.06 1,738 2,775 178.07 1,738 2,788 178.08 1,738 2,800 178.09 1,738 2,813 178.10 1,738 2,826 178.11 1,738 2,839 178.12 1,738 2,852 178.13 1,738 2,864 178.14 1,738 2,877 178.15 1,738 2,890 178.16 1,738 2,903 178.17 1,738 2,915 178.18 1,738 2,928 178.19 1,738 2,941 178.20 1,738 2,954 178.21 1,738 2,966 178.22 1,738 2,979 178.23 1,738 2,992 178.24 1,738 3,004 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.25 1,738 3,017 178.26 1,738 3,030 178.27 1,738 3,042 178.28 1,738 3,055 178.29 1,738 3,067 178.30 1,738 3,080 178.31 1,738 3,092 178.32 1,738 3,105 178.33 1,738 3,117 178.34 1,738 3,130 178.35 1,738 3,143 178.36 1,738 3,155 178.37 1,738 3,167 178.38 1,738 3,180 178.39 1,738 3,192 178.40 1,738 3,205 178.41 1,738 3,217 178.42 1,738 3,230 178.43 1,738 3,242 178.44 1,738 3,254 178.45 1,738 3,267 178.46 1,738 3,279 178.47 1,738 3,291 178.48 1,738 3,304 178.49 1,738 3,316 178.50 1,738 3,328 178.51 1,738 3,341 178.52 1,738 3,353 178.53 1,738 3,365 178.54 1,738 3,377 178.55 1,738 3,389 178.56 1,738 3,402 178.57 1,738 3,414 178.58 1,738 3,426 178.59 1,738 3,438 178.60 1,738 3,450 178.61 1,738 3,462 178.62 1,738 3,474 178.63 1,738 3,487 178.64 1,738 3,499 178.65 1,738 3,511 178.66 1,738 3,523 178.67 1,738 3,535 178.68 1,738 3,547 178.69 1,738 3,559 178.70 1,738 3,571 178.71 1,738 3,582 178.72 1,738 3,594 178.73 1,738 3,606 178.74 1,738 3,618 178.75 1,738 3,630 178.76 1,738 3,642 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 143HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.77 1,738 3,654 178.78 1,738 3,665 178.79 1,738 3,677 178.80 1,738 3,689 178.81 1,738 3,701 178.82 1,738 3,713 178.83 1,738 3,724 178.84 1,738 3,736 178.85 1,738 3,748 178.86 1,738 3,759 178.87 1,738 3,771 178.88 1,738 3,783 178.89 1,738 3,794 178.90 1,738 3,806 178.91 1,738 3,817 178.92 1,738 3,829 178.93 1,738 3,840 178.94 1,738 3,852 178.95 1,738 3,863 178.96 1,738 3,875 178.97 1,738 3,886 178.98 1,738 3,898 178.99 1,738 3,909 179.00 1,738 3,920 179.01 1,738 3,932 179.02 1,738 3,943 179.03 1,738 3,954 179.04 1,738 3,965 179.05 1,738 3,977 179.06 1,738 3,988 179.07 1,738 3,999 179.08 1,738 4,010 179.09 1,738 4,022 179.10 1,738 4,033 179.11 1,738 4,044 179.12 1,738 4,055 179.13 1,738 4,066 179.14 1,738 4,077 179.15 1,738 4,088 179.16 1,738 4,099 179.17 1,738 4,110 179.18 1,738 4,121 179.19 1,738 4,132 179.20 1,738 4,143 179.21 1,738 4,154 179.22 1,738 4,164 179.23 1,738 4,175 179.24 1,738 4,186 179.25 1,738 4,197 179.26 1,738 4,207 179.27 1,738 4,218 179.28 1,738 4,229 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.29 1,738 4,239 179.30 1,738 4,250 179.31 1,738 4,261 179.32 1,738 4,271 179.33 1,738 4,282 179.34 1,738 4,292 179.35 1,738 4,303 179.36 1,738 4,313 179.37 1,738 4,323 179.38 1,738 4,334 179.39 1,738 4,344 179.40 1,738 4,354 179.41 1,738 4,365 179.42 1,738 4,375 179.43 1,738 4,385 179.44 1,738 4,395 179.45 1,738 4,405 179.46 1,738 4,416 179.47 1,738 4,426 179.48 1,738 4,436 179.49 1,738 4,446 179.50 1,738 4,456 179.51 1,738 4,466 179.52 1,738 4,475 179.53 1,738 4,485 179.54 1,738 4,495 179.55 1,738 4,505 179.56 1,738 4,514 179.57 1,738 4,524 179.58 1,738 4,534 179.59 1,738 4,543 179.60 1,738 4,553 179.61 1,738 4,562 179.62 1,738 4,572 179.63 1,738 4,581 179.64 1,738 4,591 179.65 1,738 4,600 179.66 1,738 4,609 179.67 1,738 4,618 179.68 1,738 4,627 179.69 1,738 4,636 179.70 1,738 4,645 179.71 1,738 4,654 179.72 1,738 4,663 179.73 1,738 4,672 179.74 1,738 4,680 179.75 1,738 4,689 179.76 1,738 4,698 179.77 1,738 4,706 179.78 1,738 4,714 179.79 1,738 4,723 179.80 1,738 4,731 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 144HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.81 1,738 4,739 179.82 1,738 4,747 179.83 1,738 4,755 179.84 1,738 4,763 179.85 1,738 4,771 179.86 1,738 4,779 179.87 1,738 4,787 179.88 1,738 4,795 179.89 1,738 4,802 179.90 1,738 4,810 179.91 1,738 4,818 179.92 1,738 4,825 179.93 1,738 4,833 179.94 1,738 4,840 179.95 1,738 4,848 179.96 1,738 4,855 179.97 1,738 4,863 179.98 1,738 4,870 179.99 1,738 4,878 180.00 1,738 4,885 180.01 1,738 4,893 180.02 1,738 4,900 180.03 1,738 4,907 180.04 1,738 4,915 180.05 1,738 4,922 180.06 1,738 4,929 180.07 1,738 4,936 180.08 1,738 4,944 180.09 1,738 4,951 180.10 1,738 4,958 180.11 1,738 4,965 180.12 1,738 4,972 180.13 1,738 4,979 180.14 1,738 4,986 180.15 1,738 4,993 180.16 1,738 5,000 180.17 1,738 5,007 180.18 1,738 5,014 180.19 1,738 5,021 180.20 1,738 5,028 180.21 1,738 5,035 180.22 1,738 5,042 180.23 1,738 5,049 180.24 1,738 5,055 180.25 1,738 5,062 180.26 1,738 5,069 180.27 1,738 5,076 180.28 1,738 5,083 180.29 1,738 5,090 180.30 1,738 5,097 180.31 1,738 5,104 180.32 1,738 5,111 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.33 1,738 5,118 180.34 1,738 5,125 180.35 1,738 5,132 180.36 1,738 5,139 180.37 1,738 5,146 180.38 1,738 5,153 180.39 1,738 5,160 180.40 1,738 5,167 180.41 1,738 5,174 180.42 1,738 5,181 180.43 1,738 5,188 180.44 1,738 5,195 180.45 1,738 5,201 180.46 1,738 5,208 180.47 1,738 5,215 180.48 1,738 5,222 180.49 1,738 5,229 180.50 1,738 5,236 180.51 1,738 5,243 180.52 1,738 5,250 180.53 1,738 5,257 180.54 1,738 5,264 180.55 1,738 5,271 180.56 1,738 5,278 180.57 1,738 5,285 180.58 1,738 5,292 180.59 1,738 5,299 180.60 1,738 5,306 180.61 1,738 5,313 180.62 1,738 5,320 180.63 1,738 5,327 180.64 1,738 5,334 180.65 1,738 5,340 180.66 1,738 5,347 180.67 1,738 5,354 180.68 1,738 5,361 180.69 1,738 5,368 180.70 1,738 5,375 180.71 1,738 5,382 180.72 1,738 5,389 180.73 1,738 5,396 180.74 1,738 5,403 180.75 1,738 5,410 180.76 1,738 5,417 180.77 1,738 5,424 180.78 1,738 5,431 180.79 1,738 5,438 180.80 1,738 5,445 180.81 1,738 5,452 180.82 1,738 5,459 180.83 1,738 5,466 180.84 1,738 5,473 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 145HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.85 1,738 5,479 180.86 1,738 5,486 180.87 1,738 5,493 180.88 1,738 5,500 180.89 1,738 5,507 180.90 1,738 5,514 180.91 1,738 5,521 180.92 1,738 5,528 180.93 1,738 5,535 180.94 1,738 5,542 180.95 1,738 5,549 180.96 1,738 5,556 180.97 1,738 5,563 180.98 1,738 5,570 180.99 1,738 5,577 181.00 1,738 5,584 181.01 1,738 5,591 181.02 1,738 5,598 181.03 1,738 5,605 181.04 1,738 5,612 181.05 1,738 5,619 181.06 1,738 5,625 181.07 1,738 5,632 181.08 1,738 5,639 181.09 1,738 5,646 181.10 1,738 5,653 181.11 1,738 5,660 181.12 1,738 5,667 181.13 1,738 5,674 181.14 1,738 5,681 181.15 1,738 5,688 Type III 24-hr 25-Year Rainfall=6.16"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 146HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,968 sf, 21.15% Impervious, Inflow Depth = 1.90" for 25-Year event Inflow = 5.38 cfs @ 12.18 hrs, Volume= 18,990 cf Primary = 5.38 cfs @ 12.18 hrs, Volume= 18,990 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 147HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=16,145 sf 22.38% Impervious Runoff Depth=4.71"Subcatchment DA 1A: DA 1A Tc=10.0 min CN=74 Runoff=1.78 cfs 6,339 cf Runoff Area=16,665 sf 100.00% Impervious Runoff Depth=7.52"Subcatchment DA 1B: DA 1B Tc=5.0 min CN=98 Runoff=3.01 cfs 10,444 cf Runoff Area=47,379 sf 1.50% Impervious Runoff Depth=3.92"Subcatchment DA 1C: DA 1C Tc=10.0 min CN=67 Runoff=4.36 cfs 15,489 cf Runoff Area=10,641 sf 41.23% Impervious Runoff Depth=5.52"Subcatchment DA 1D: DA 1D Tc=5.0 min CN=81 Runoff=1.60 cfs 4,891 cf Runoff Area=29,138 sf 0.00% Impervious Runoff Depth=3.92"Subcatchment DA 1E: DA 1E Flow Length=446' Tc=10.7 min CN=67 Runoff=2.62 cfs 9,526 cf Peak Elev=185.13' Storage=1,214 cf Inflow=1.78 cfs 6,339 cfPond RG-A: Rain Garden A Discarded=0.06 cfs 3,234 cf Primary=1.70 cfs 3,105 cf Outflow=1.76 cfs 6,339 cf Peak Elev=158.10' Storage=1,547 cf Inflow=1.60 cfs 4,891 cfPond RG-B: Rain Garden B Discarded=0.06 cfs 3,438 cf Primary=1.14 cfs 1,453 cf Outflow=1.20 cfs 4,891 cf Peak Elev=179.47' Storage=4,427 cf Inflow=3.01 cfs 10,444 cfPond SWB: Stormtech MC 3500 (SWM-B) Discarded=0.10 cfs 8,849 cf Primary=0.45 cfs 1,595 cf Outflow=0.54 cfs 10,444 cf Inflow=9.81 cfs 31,168 cfLink TSD: Total Site Discharge Primary=9.81 cfs 31,168 cf Total Runoff Area = 119,968 sf Runoff Volume = 46,689 cf Average Runoff Depth = 4.67" 78.85% Pervious = 94,594 sf 21.15% Impervious = 25,374 sf Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 148HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1A: DA 1A Runoff = 1.78 cfs @ 12.14 hrs, Volume= 6,339 cf, Depth= 4.71" Routed to Pond RG-A : Rain Garden A Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 6,492 66 Woods, Poor, HSG B 6,040 69 50-75% Grass cover, Fair, HSG B 3,613 98 Paved parking, HSG B 16,145 74 Weighted Average 12,532 77.62% Pervious Area 3,613 22.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 149HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1B: DA 1B Runoff = 3.01 cfs @ 12.07 hrs, Volume= 10,444 cf, Depth= 7.52" Routed to Pond SWB : Stormtech MC 3500 (SWM-B) Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 4,000 98 Roofs, HSG B 12,665 98 Paved parking, HSG B 16,665 98 Weighted Average 16,665 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 150HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1C: DA 1C Runoff = 4.36 cfs @ 12.14 hrs, Volume= 15,489 cf, Depth= 3.92" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 709 98 Paved parking, HSG B 22,996 66 Woods, Poor, HSG B 23,674 67 Brush, Poor, HSG B 47,379 67 Weighted Average 46,670 98.50% Pervious Area 709 1.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, direct Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 151HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1D: DA 1D Runoff = 1.60 cfs @ 12.07 hrs, Volume= 4,891 cf, Depth= 5.52" Routed to Pond RG-B : Rain Garden B Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 4,387 98 Paved parking, HSG B 6,254 69 50-75% Grass cover, Fair, HSG B 10,641 81 Weighted Average 6,254 58.77% Pervious Area 4,387 41.23% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, direct Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 152HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment DA 1E: DA 1E Runoff = 2.62 cfs @ 12.15 hrs, Volume= 9,526 cf, Depth= 3.92" Routed to Link TSD : Total Site Discharge Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100-Year Rainfall=7.76" Area (sf) CN Description 20,116 66 Woods, Poor, HSG B 9,022 69 50-75% Grass cover, Fair, HSG B 29,138 67 Weighted Average 29,138 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.7 100 0.2400 0.22 Sheet Flow, Sheetflow Woods: Light underbrush n= 0.400 P2= 3.45" 3.0 346 0.0750 1.92 Shallow Concentrated Flow, SHALLOW Short Grass Pasture Kv= 7.0 fps 10.7 446 Total Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 153HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-A: Rain Garden A Inflow Area = 16,145 sf, 22.38% Impervious, Inflow Depth = 4.71" for 100-Year event Inflow = 1.78 cfs @ 12.14 hrs, Volume= 6,339 cf Outflow = 1.76 cfs @ 12.16 hrs, Volume= 6,339 cf, Atten= 1%, Lag= 1.0 min Discarded = 0.06 cfs @ 12.16 hrs, Volume= 3,234 cf Primary = 1.70 cfs @ 12.16 hrs, Volume= 3,105 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 185.13' @ 12.16 hrs Surf.Area= 1,077 sf Storage= 1,214 cf Plug-Flow detention time= 135.8 min calculated for 6,337 cf (100% of inflow) Center-of-Mass det. time= 135.9 min ( 957.1 - 821.3 ) Volume Invert Avail.Storage Storage Description #1 183.00' 1,404 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 183.00 143 0 0 184.00 501 322 322 185.00 1,011 756 1,078 185.30 1,164 326 1,404 Device Routing Invert Outlet Devices #1 Primary 185.00'15.0' long x 3.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.41 2.56 2.69 2.67 2.66 2.66 2.65 2.67 2.67 2.70 2.77 2.83 2.87 2.93 3.10 3.19 3.32 #2 Discarded 183.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 12.16 hrs HW=185.13' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=1.69 cfs @ 12.16 hrs HW=185.13' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 1.69 cfs @ 0.87 fps) Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 154HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.00 0.00 0.00 0.00 183.01 0.01 0.01 0.00 183.02 0.01 0.01 0.00 183.03 0.01 0.01 0.00 183.04 0.01 0.01 0.00 183.05 0.01 0.01 0.00 183.06 0.01 0.01 0.00 183.07 0.01 0.01 0.00 183.08 0.01 0.01 0.00 183.09 0.01 0.01 0.00 183.10 0.01 0.01 0.00 183.11 0.01 0.01 0.00 183.12 0.01 0.01 0.00 183.13 0.01 0.01 0.00 183.14 0.01 0.01 0.00 183.15 0.01 0.01 0.00 183.16 0.01 0.01 0.00 183.17 0.01 0.01 0.00 183.18 0.01 0.01 0.00 183.19 0.01 0.01 0.00 183.20 0.01 0.01 0.00 183.21 0.01 0.01 0.00 183.22 0.01 0.01 0.00 183.23 0.01 0.01 0.00 183.24 0.01 0.01 0.00 183.25 0.01 0.01 0.00 183.26 0.01 0.01 0.00 183.27 0.01 0.01 0.00 183.28 0.01 0.01 0.00 183.29 0.01 0.01 0.00 183.30 0.01 0.01 0.00 183.31 0.01 0.01 0.00 183.32 0.01 0.01 0.00 183.33 0.01 0.01 0.00 183.34 0.01 0.01 0.00 183.35 0.01 0.01 0.00 183.36 0.02 0.02 0.00 183.37 0.02 0.02 0.00 183.38 0.02 0.02 0.00 183.39 0.02 0.02 0.00 183.40 0.02 0.02 0.00 183.41 0.02 0.02 0.00 183.42 0.02 0.02 0.00 183.43 0.02 0.02 0.00 183.44 0.02 0.02 0.00 183.45 0.02 0.02 0.00 183.46 0.02 0.02 0.00 183.47 0.02 0.02 0.00 183.48 0.02 0.02 0.00 183.49 0.02 0.02 0.00 183.50 0.02 0.02 0.00 183.51 0.02 0.02 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 183.52 0.02 0.02 0.00 183.53 0.02 0.02 0.00 183.54 0.02 0.02 0.00 183.55 0.02 0.02 0.00 183.56 0.02 0.02 0.00 183.57 0.02 0.02 0.00 183.58 0.02 0.02 0.00 183.59 0.02 0.02 0.00 183.60 0.02 0.02 0.00 183.61 0.02 0.02 0.00 183.62 0.02 0.02 0.00 183.63 0.02 0.02 0.00 183.64 0.02 0.02 0.00 183.65 0.02 0.02 0.00 183.66 0.02 0.02 0.00 183.67 0.02 0.02 0.00 183.68 0.02 0.02 0.00 183.69 0.02 0.02 0.00 183.70 0.02 0.02 0.00 183.71 0.02 0.02 0.00 183.72 0.02 0.02 0.00 183.73 0.02 0.02 0.00 183.74 0.02 0.02 0.00 183.75 0.02 0.02 0.00 183.76 0.02 0.02 0.00 183.77 0.02 0.02 0.00 183.78 0.02 0.02 0.00 183.79 0.02 0.02 0.00 183.80 0.02 0.02 0.00 183.81 0.02 0.02 0.00 183.82 0.02 0.02 0.00 183.83 0.02 0.02 0.00 183.84 0.02 0.02 0.00 183.85 0.02 0.02 0.00 183.86 0.03 0.03 0.00 183.87 0.03 0.03 0.00 183.88 0.03 0.03 0.00 183.89 0.03 0.03 0.00 183.90 0.03 0.03 0.00 183.91 0.03 0.03 0.00 183.92 0.03 0.03 0.00 183.93 0.03 0.03 0.00 183.94 0.03 0.03 0.00 183.95 0.03 0.03 0.00 183.96 0.03 0.03 0.00 183.97 0.03 0.03 0.00 183.98 0.03 0.03 0.00 183.99 0.03 0.03 0.00 184.00 0.03 0.03 0.00 184.01 0.03 0.03 0.00 184.02 0.03 0.03 0.00 184.03 0.03 0.03 0.00 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 155HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.04 0.03 0.03 0.00 184.05 0.03 0.03 0.00 184.06 0.03 0.03 0.00 184.07 0.03 0.03 0.00 184.08 0.03 0.03 0.00 184.09 0.03 0.03 0.00 184.10 0.03 0.03 0.00 184.11 0.03 0.03 0.00 184.12 0.03 0.03 0.00 184.13 0.03 0.03 0.00 184.14 0.03 0.03 0.00 184.15 0.03 0.03 0.00 184.16 0.03 0.03 0.00 184.17 0.03 0.03 0.00 184.18 0.03 0.03 0.00 184.19 0.03 0.03 0.00 184.20 0.03 0.03 0.00 184.21 0.03 0.03 0.00 184.22 0.03 0.03 0.00 184.23 0.03 0.03 0.00 184.24 0.03 0.03 0.00 184.25 0.03 0.03 0.00 184.26 0.04 0.04 0.00 184.27 0.04 0.04 0.00 184.28 0.04 0.04 0.00 184.29 0.04 0.04 0.00 184.30 0.04 0.04 0.00 184.31 0.04 0.04 0.00 184.32 0.04 0.04 0.00 184.33 0.04 0.04 0.00 184.34 0.04 0.04 0.00 184.35 0.04 0.04 0.00 184.36 0.04 0.04 0.00 184.37 0.04 0.04 0.00 184.38 0.04 0.04 0.00 184.39 0.04 0.04 0.00 184.40 0.04 0.04 0.00 184.41 0.04 0.04 0.00 184.42 0.04 0.04 0.00 184.43 0.04 0.04 0.00 184.44 0.04 0.04 0.00 184.45 0.04 0.04 0.00 184.46 0.04 0.04 0.00 184.47 0.04 0.04 0.00 184.48 0.04 0.04 0.00 184.49 0.04 0.04 0.00 184.50 0.04 0.04 0.00 184.51 0.04 0.04 0.00 184.52 0.04 0.04 0.00 184.53 0.04 0.04 0.00 184.54 0.04 0.04 0.00 184.55 0.04 0.04 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 184.56 0.04 0.04 0.00 184.57 0.04 0.04 0.00 184.58 0.04 0.04 0.00 184.59 0.04 0.04 0.00 184.60 0.04 0.04 0.00 184.61 0.05 0.05 0.00 184.62 0.05 0.05 0.00 184.63 0.05 0.05 0.00 184.64 0.05 0.05 0.00 184.65 0.05 0.05 0.00 184.66 0.05 0.05 0.00 184.67 0.05 0.05 0.00 184.68 0.05 0.05 0.00 184.69 0.05 0.05 0.00 184.70 0.05 0.05 0.00 184.71 0.05 0.05 0.00 184.72 0.05 0.05 0.00 184.73 0.05 0.05 0.00 184.74 0.05 0.05 0.00 184.75 0.05 0.05 0.00 184.76 0.05 0.05 0.00 184.77 0.05 0.05 0.00 184.78 0.05 0.05 0.00 184.79 0.05 0.05 0.00 184.80 0.05 0.05 0.00 184.81 0.05 0.05 0.00 184.82 0.05 0.05 0.00 184.83 0.05 0.05 0.00 184.84 0.05 0.05 0.00 184.85 0.05 0.05 0.00 184.86 0.05 0.05 0.00 184.87 0.05 0.05 0.00 184.88 0.05 0.05 0.00 184.89 0.05 0.05 0.00 184.90 0.05 0.05 0.00 184.91 0.05 0.05 0.00 184.92 0.05 0.05 0.00 184.93 0.05 0.05 0.00 184.94 0.05 0.05 0.00 184.95 0.05 0.05 0.00 184.96 0.06 0.06 0.00 184.97 0.06 0.06 0.00 184.98 0.06 0.06 0.00 184.99 0.06 0.06 0.00 185.00 0.06 0.06 0.00 185.01 0.09 0.06 0.04 185.02 0.16 0.06 0.10 185.03 0.24 0.06 0.19 185.04 0.35 0.06 0.29 185.05 0.46 0.06 0.40 185.06 0.59 0.06 0.53 185.07 0.73 0.06 0.67 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 156HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-A: Rain Garden A (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 185.08 0.88 0.06 0.82 185.09 1.03 0.06 0.98 185.10 1.20 0.06 1.14 185.11 1.38 0.06 1.32 185.12 1.56 0.06 1.50 185.13 1.75 0.06 1.69 185.14 1.95 0.06 1.89 185.15 2.16 0.06 2.10 185.16 2.37 0.06 2.31 185.17 2.59 0.06 2.53 185.18 2.82 0.06 2.76 185.19 3.06 0.06 2.99 185.20 3.30 0.06 3.23 185.21 3.55 0.06 3.49 185.22 3.82 0.06 3.75 185.23 4.09 0.06 4.02 185.24 4.37 0.06 4.30 185.25 4.65 0.06 4.59 185.26 4.95 0.06 4.88 185.27 5.25 0.06 5.18 185.28 5.55 0.06 5.49 185.29 5.87 0.06 5.80 185.30 6.19 0.06 6.12 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 157HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.00 143 0 183.01 147 1 183.02 150 3 183.03 154 4 183.04 157 6 183.05 161 8 183.06 164 9 183.07 168 11 183.08 172 13 183.09 175 14 183.10 179 16 183.11 182 18 183.12 186 20 183.13 190 22 183.14 193 24 183.15 197 25 183.16 200 27 183.17 204 29 183.18 207 32 183.19 211 34 183.20 215 36 183.21 218 38 183.22 222 40 183.23 225 42 183.24 229 45 183.25 233 47 183.26 236 49 183.27 240 52 183.28 243 54 183.29 247 57 183.30 250 59 183.31 254 62 183.32 258 64 183.33 261 67 183.34 265 69 183.35 268 72 183.36 272 75 183.37 275 77 183.38 279 80 183.39 283 83 183.40 286 86 183.41 290 89 183.42 293 92 183.43 297 95 183.44 301 98 183.45 304 101 183.46 308 104 183.47 311 107 183.48 315 110 183.49 318 113 183.50 322 116 183.51 326 119 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 183.52 329 123 183.53 333 126 183.54 336 129 183.55 340 133 183.56 343 136 183.57 347 140 183.58 351 143 183.59 354 147 183.60 358 150 183.61 361 154 183.62 365 157 183.63 369 161 183.64 372 165 183.65 376 169 183.66 379 172 183.67 383 176 183.68 386 180 183.69 390 184 183.70 394 188 183.71 397 192 183.72 401 196 183.73 404 200 183.74 408 204 183.75 412 208 183.76 415 212 183.77 419 216 183.78 422 220 183.79 426 225 183.80 429 229 183.81 433 233 183.82 437 238 183.83 440 242 183.84 444 246 183.85 447 251 183.86 451 255 183.87 454 260 183.88 458 264 183.89 462 269 183.90 465 274 183.91 469 278 183.92 472 283 183.93 476 288 183.94 480 293 183.95 483 297 183.96 487 302 183.97 490 307 183.98 494 312 183.99 497 317 184.00 501 322 184.01 506 327 184.02 511 332 184.03 516 337 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 158HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.04 521 342 184.05 527 348 184.06 532 353 184.07 537 358 184.08 542 364 184.09 547 369 184.10 552 375 184.11 557 380 184.12 562 386 184.13 567 391 184.14 572 397 184.15 578 403 184.16 583 409 184.17 588 415 184.18 593 420 184.19 598 426 184.20 603 432 184.21 608 438 184.22 613 445 184.23 618 451 184.24 623 457 184.25 629 463 184.26 634 469 184.27 639 476 184.28 644 482 184.29 649 489 184.30 654 495 184.31 659 502 184.32 664 508 184.33 669 515 184.34 674 522 184.35 679 529 184.36 685 535 184.37 690 542 184.38 695 549 184.39 700 556 184.40 705 563 184.41 710 570 184.42 715 577 184.43 720 585 184.44 725 592 184.45 730 599 184.46 736 606 184.47 741 614 184.48 746 621 184.49 751 629 184.50 756 636 184.51 761 644 184.52 766 651 184.53 771 659 184.54 776 667 184.55 782 675 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 184.56 787 683 184.57 792 690 184.58 797 698 184.59 802 706 184.60 807 714 184.61 812 722 184.62 817 731 184.63 822 739 184.64 827 747 184.65 833 755 184.66 838 764 184.67 843 772 184.68 848 781 184.69 853 789 184.70 858 798 184.71 863 806 184.72 868 815 184.73 873 824 184.74 878 832 184.75 884 841 184.76 889 850 184.77 894 859 184.78 899 868 184.79 904 877 184.80 909 886 184.81 914 895 184.82 919 904 184.83 924 913 184.84 929 923 184.85 934 932 184.86 940 941 184.87 945 951 184.88 950 960 184.89 955 970 184.90 960 979 184.91 965 989 184.92 970 999 184.93 975 1,008 184.94 980 1,018 184.95 985 1,028 184.96 991 1,038 184.97 996 1,048 184.98 1,001 1,058 184.99 1,006 1,068 185.00 1,011 1,078 185.01 1,016 1,088 185.02 1,021 1,098 185.03 1,026 1,109 185.04 1,031 1,119 185.05 1,037 1,129 185.06 1,042 1,140 185.07 1,047 1,150 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 159HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-A: Rain Garden A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 185.08 1,052 1,161 185.09 1,057 1,171 185.10 1,062 1,182 185.11 1,067 1,192 185.12 1,072 1,203 185.13 1,077 1,214 185.14 1,082 1,225 185.15 1,088 1,235 185.16 1,093 1,246 185.17 1,098 1,257 185.18 1,103 1,268 185.19 1,108 1,279 185.20 1,113 1,290 185.21 1,118 1,302 185.22 1,123 1,313 185.23 1,128 1,324 185.24 1,133 1,335 185.25 1,138 1,347 185.26 1,144 1,358 185.27 1,149 1,370 185.28 1,154 1,381 185.29 1,159 1,393 185.30 1,164 1,404 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 160HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond RG-B: Rain Garden B Inflow Area = 10,641 sf, 41.23% Impervious, Inflow Depth = 5.52" for 100-Year event Inflow = 1.60 cfs @ 12.07 hrs, Volume= 4,891 cf Outflow = 1.20 cfs @ 12.15 hrs, Volume= 4,891 cf, Atten= 25%, Lag= 4.3 min Discarded = 0.06 cfs @ 12.15 hrs, Volume= 3,438 cf Primary = 1.14 cfs @ 12.15 hrs, Volume= 1,453 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 158.10' @ 12.15 hrs Surf.Area= 1,070 sf Storage= 1,547 cf Plug-Flow detention time= 209.2 min calculated for 4,891 cf (100% of inflow) Center-of-Mass det. time= 209.1 min ( 1,009.9 - 800.7 ) Volume Invert Avail.Storage Storage Description #1 156.00' 1,767 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 156.00 437 0 0 157.00 704 571 571 158.00 1,037 871 1,441 158.30 1,135 326 1,767 Device Routing Invert Outlet Devices #1 Primary 158.00'15.0' long x 4.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 156.00'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.06 cfs @ 12.15 hrs HW=158.10' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=1.11 cfs @ 12.15 hrs HW=158.10' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 1.11 cfs @ 0.75 fps) Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 161HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.00 0.00 0.00 0.00 156.01 0.02 0.02 0.00 156.02 0.02 0.02 0.00 156.03 0.02 0.02 0.00 156.04 0.02 0.02 0.00 156.05 0.03 0.03 0.00 156.06 0.03 0.03 0.00 156.07 0.03 0.03 0.00 156.08 0.03 0.03 0.00 156.09 0.03 0.03 0.00 156.10 0.03 0.03 0.00 156.11 0.03 0.03 0.00 156.12 0.03 0.03 0.00 156.13 0.03 0.03 0.00 156.14 0.03 0.03 0.00 156.15 0.03 0.03 0.00 156.16 0.03 0.03 0.00 156.17 0.03 0.03 0.00 156.18 0.03 0.03 0.00 156.19 0.03 0.03 0.00 156.20 0.03 0.03 0.00 156.21 0.03 0.03 0.00 156.22 0.03 0.03 0.00 156.23 0.03 0.03 0.00 156.24 0.03 0.03 0.00 156.25 0.03 0.03 0.00 156.26 0.03 0.03 0.00 156.27 0.03 0.03 0.00 156.28 0.03 0.03 0.00 156.29 0.03 0.03 0.00 156.30 0.03 0.03 0.00 156.31 0.03 0.03 0.00 156.32 0.03 0.03 0.00 156.33 0.03 0.03 0.00 156.34 0.03 0.03 0.00 156.35 0.03 0.03 0.00 156.36 0.03 0.03 0.00 156.37 0.03 0.03 0.00 156.38 0.03 0.03 0.00 156.39 0.03 0.03 0.00 156.40 0.03 0.03 0.00 156.41 0.03 0.03 0.00 156.42 0.03 0.03 0.00 156.43 0.03 0.03 0.00 156.44 0.03 0.03 0.00 156.45 0.03 0.03 0.00 156.46 0.03 0.03 0.00 156.47 0.03 0.03 0.00 156.48 0.03 0.03 0.00 156.49 0.03 0.03 0.00 156.50 0.03 0.03 0.00 156.51 0.03 0.03 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 156.52 0.03 0.03 0.00 156.53 0.03 0.03 0.00 156.54 0.03 0.03 0.00 156.55 0.03 0.03 0.00 156.56 0.03 0.03 0.00 156.57 0.03 0.03 0.00 156.58 0.03 0.03 0.00 156.59 0.03 0.03 0.00 156.60 0.03 0.03 0.00 156.61 0.03 0.03 0.00 156.62 0.03 0.03 0.00 156.63 0.03 0.03 0.00 156.64 0.03 0.03 0.00 156.65 0.03 0.03 0.00 156.66 0.03 0.03 0.00 156.67 0.03 0.03 0.00 156.68 0.03 0.03 0.00 156.69 0.03 0.03 0.00 156.70 0.03 0.03 0.00 156.71 0.03 0.03 0.00 156.72 0.03 0.03 0.00 156.73 0.04 0.04 0.00 156.74 0.04 0.04 0.00 156.75 0.04 0.04 0.00 156.76 0.04 0.04 0.00 156.77 0.04 0.04 0.00 156.78 0.04 0.04 0.00 156.79 0.04 0.04 0.00 156.80 0.04 0.04 0.00 156.81 0.04 0.04 0.00 156.82 0.04 0.04 0.00 156.83 0.04 0.04 0.00 156.84 0.04 0.04 0.00 156.85 0.04 0.04 0.00 156.86 0.04 0.04 0.00 156.87 0.04 0.04 0.00 156.88 0.04 0.04 0.00 156.89 0.04 0.04 0.00 156.90 0.04 0.04 0.00 156.91 0.04 0.04 0.00 156.92 0.04 0.04 0.00 156.93 0.04 0.04 0.00 156.94 0.04 0.04 0.00 156.95 0.04 0.04 0.00 156.96 0.04 0.04 0.00 156.97 0.04 0.04 0.00 156.98 0.04 0.04 0.00 156.99 0.04 0.04 0.00 157.00 0.04 0.04 0.00 157.01 0.04 0.04 0.00 157.02 0.04 0.04 0.00 157.03 0.04 0.04 0.00 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 162HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.04 0.04 0.04 0.00 157.05 0.04 0.04 0.00 157.06 0.04 0.04 0.00 157.07 0.04 0.04 0.00 157.08 0.04 0.04 0.00 157.09 0.04 0.04 0.00 157.10 0.04 0.04 0.00 157.11 0.04 0.04 0.00 157.12 0.04 0.04 0.00 157.13 0.04 0.04 0.00 157.14 0.04 0.04 0.00 157.15 0.04 0.04 0.00 157.16 0.04 0.04 0.00 157.17 0.04 0.04 0.00 157.18 0.04 0.04 0.00 157.19 0.04 0.04 0.00 157.20 0.04 0.04 0.00 157.21 0.04 0.04 0.00 157.22 0.04 0.04 0.00 157.23 0.04 0.04 0.00 157.24 0.04 0.04 0.00 157.25 0.04 0.04 0.00 157.26 0.04 0.04 0.00 157.27 0.04 0.04 0.00 157.28 0.04 0.04 0.00 157.29 0.04 0.04 0.00 157.30 0.04 0.04 0.00 157.31 0.04 0.04 0.00 157.32 0.05 0.05 0.00 157.33 0.05 0.05 0.00 157.34 0.05 0.05 0.00 157.35 0.05 0.05 0.00 157.36 0.05 0.05 0.00 157.37 0.05 0.05 0.00 157.38 0.05 0.05 0.00 157.39 0.05 0.05 0.00 157.40 0.05 0.05 0.00 157.41 0.05 0.05 0.00 157.42 0.05 0.05 0.00 157.43 0.05 0.05 0.00 157.44 0.05 0.05 0.00 157.45 0.05 0.05 0.00 157.46 0.05 0.05 0.00 157.47 0.05 0.05 0.00 157.48 0.05 0.05 0.00 157.49 0.05 0.05 0.00 157.50 0.05 0.05 0.00 157.51 0.05 0.05 0.00 157.52 0.05 0.05 0.00 157.53 0.05 0.05 0.00 157.54 0.05 0.05 0.00 157.55 0.05 0.05 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 157.56 0.05 0.05 0.00 157.57 0.05 0.05 0.00 157.58 0.05 0.05 0.00 157.59 0.05 0.05 0.00 157.60 0.05 0.05 0.00 157.61 0.05 0.05 0.00 157.62 0.05 0.05 0.00 157.63 0.05 0.05 0.00 157.64 0.05 0.05 0.00 157.65 0.05 0.05 0.00 157.66 0.05 0.05 0.00 157.67 0.05 0.05 0.00 157.68 0.05 0.05 0.00 157.69 0.05 0.05 0.00 157.70 0.05 0.05 0.00 157.71 0.05 0.05 0.00 157.72 0.05 0.05 0.00 157.73 0.05 0.05 0.00 157.74 0.05 0.05 0.00 157.75 0.05 0.05 0.00 157.76 0.05 0.05 0.00 157.77 0.05 0.05 0.00 157.78 0.05 0.05 0.00 157.79 0.05 0.05 0.00 157.80 0.05 0.05 0.00 157.81 0.05 0.05 0.00 157.82 0.05 0.05 0.00 157.83 0.05 0.05 0.00 157.84 0.05 0.05 0.00 157.85 0.05 0.05 0.00 157.86 0.06 0.06 0.00 157.87 0.06 0.06 0.00 157.88 0.06 0.06 0.00 157.89 0.06 0.06 0.00 157.90 0.06 0.06 0.00 157.91 0.06 0.06 0.00 157.92 0.06 0.06 0.00 157.93 0.06 0.06 0.00 157.94 0.06 0.06 0.00 157.95 0.06 0.06 0.00 157.96 0.06 0.06 0.00 157.97 0.06 0.06 0.00 157.98 0.06 0.06 0.00 157.99 0.06 0.06 0.00 158.00 0.06 0.06 0.00 158.01 0.09 0.06 0.04 158.02 0.16 0.06 0.10 158.03 0.24 0.06 0.19 158.04 0.34 0.06 0.29 158.05 0.46 0.06 0.40 158.06 0.58 0.06 0.52 158.07 0.72 0.06 0.66 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 163HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond RG-B: Rain Garden B (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 158.08 0.87 0.06 0.81 158.09 1.02 0.06 0.96 158.10 1.19 0.06 1.13 158.11 1.36 0.06 1.30 158.12 1.54 0.06 1.48 158.13 1.73 0.06 1.67 158.14 1.93 0.06 1.87 158.15 2.13 0.06 2.07 158.16 2.35 0.06 2.28 158.17 2.56 0.06 2.50 158.18 2.79 0.06 2.73 158.19 3.02 0.06 2.96 158.20 3.25 0.06 3.19 158.21 3.51 0.06 3.45 158.22 3.77 0.06 3.71 158.23 4.04 0.06 3.98 158.24 4.32 0.06 4.25 158.25 4.60 0.06 4.54 158.26 4.89 0.06 4.83 158.27 5.19 0.06 5.13 158.28 5.49 0.06 5.43 158.29 5.81 0.06 5.74 158.30 6.13 0.06 6.06 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 164HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.00 437 0 156.01 440 4 156.02 442 9 156.03 445 13 156.04 448 18 156.05 450 22 156.06 453 27 156.07 456 31 156.08 458 36 156.09 461 40 156.10 464 45 156.11 466 50 156.12 469 54 156.13 472 59 156.14 474 64 156.15 477 69 156.16 480 73 156.17 482 78 156.18 485 83 156.19 488 88 156.20 490 93 156.21 493 98 156.22 496 103 156.23 498 108 156.24 501 113 156.25 504 118 156.26 506 123 156.27 509 128 156.28 512 133 156.29 514 138 156.30 517 143 156.31 520 148 156.32 522 154 156.33 525 159 156.34 528 164 156.35 530 169 156.36 533 175 156.37 536 180 156.38 538 185 156.39 541 191 156.40 544 196 156.41 546 202 156.42 549 207 156.43 552 213 156.44 554 218 156.45 557 224 156.46 560 229 156.47 562 235 156.48 565 241 156.49 568 246 156.50 571 252 156.51 573 258 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 156.52 576 263 156.53 579 269 156.54 581 275 156.55 584 281 156.56 587 287 156.57 589 292 156.58 592 298 156.59 595 304 156.60 597 310 156.61 600 316 156.62 603 322 156.63 605 328 156.64 608 334 156.65 611 340 156.66 613 347 156.67 616 353 156.68 619 359 156.69 621 365 156.70 624 371 156.71 627 378 156.72 629 384 156.73 632 390 156.74 635 396 156.75 637 403 156.76 640 409 156.77 643 416 156.78 645 422 156.79 648 429 156.80 651 435 156.81 653 442 156.82 656 448 156.83 659 455 156.84 661 461 156.85 664 468 156.86 667 475 156.87 669 481 156.88 672 488 156.89 675 495 156.90 677 501 156.91 680 508 156.92 683 515 156.93 685 522 156.94 688 529 156.95 691 536 156.96 693 543 156.97 696 550 156.98 699 556 156.99 701 563 157.00 704 571 157.01 707 578 157.02 711 585 157.03 714 592 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 165HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.04 717 599 157.05 721 606 157.06 724 613 157.07 727 621 157.08 731 628 157.09 734 635 157.10 737 643 157.11 741 650 157.12 744 657 157.13 747 665 157.14 751 672 157.15 754 680 157.16 757 687 157.17 761 695 157.18 764 703 157.19 767 710 157.20 771 718 157.21 774 726 157.22 777 733 157.23 781 741 157.24 784 749 157.25 787 757 157.26 791 765 157.27 794 773 157.28 797 781 157.29 801 789 157.30 804 797 157.31 807 805 157.32 811 813 157.33 814 821 157.34 817 829 157.35 821 837 157.36 824 846 157.37 827 854 157.38 831 862 157.39 834 870 157.40 837 879 157.41 841 887 157.42 844 896 157.43 847 904 157.44 851 912 157.45 854 921 157.46 857 930 157.47 861 938 157.48 864 947 157.49 867 955 157.50 871 964 157.51 874 973 157.52 877 982 157.53 880 990 157.54 884 999 157.55 887 1,008 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 157.56 890 1,017 157.57 894 1,026 157.58 897 1,035 157.59 900 1,044 157.60 904 1,053 157.61 907 1,062 157.62 910 1,071 157.63 914 1,080 157.64 917 1,089 157.65 920 1,098 157.66 924 1,108 157.67 927 1,117 157.68 930 1,126 157.69 934 1,136 157.70 937 1,145 157.71 940 1,154 157.72 944 1,164 157.73 947 1,173 157.74 950 1,183 157.75 954 1,192 157.76 957 1,202 157.77 960 1,211 157.78 964 1,221 157.79 967 1,231 157.80 970 1,240 157.81 974 1,250 157.82 977 1,260 157.83 980 1,270 157.84 984 1,279 157.85 987 1,289 157.86 990 1,299 157.87 994 1,309 157.88 997 1,319 157.89 1,000 1,329 157.90 1,004 1,339 157.91 1,007 1,349 157.92 1,010 1,359 157.93 1,014 1,369 157.94 1,017 1,379 157.95 1,020 1,390 157.96 1,024 1,400 157.97 1,027 1,410 157.98 1,030 1,420 157.99 1,034 1,431 158.00 1,037 1,441 158.01 1,040 1,451 158.02 1,044 1,462 158.03 1,047 1,472 158.04 1,050 1,483 158.05 1,053 1,493 158.06 1,057 1,504 158.07 1,060 1,514 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 166HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond RG-B: Rain Garden B (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 158.08 1,063 1,525 158.09 1,066 1,536 158.10 1,070 1,546 158.11 1,073 1,557 158.12 1,076 1,568 158.13 1,079 1,579 158.14 1,083 1,589 158.15 1,086 1,600 158.16 1,089 1,611 158.17 1,093 1,622 158.18 1,096 1,633 158.19 1,099 1,644 158.20 1,102 1,655 158.21 1,106 1,666 158.22 1,109 1,677 158.23 1,112 1,688 158.24 1,115 1,699 158.25 1,119 1,710 158.26 1,122 1,722 158.27 1,125 1,733 158.28 1,128 1,744 158.29 1,132 1,755 158.30 1,135 1,767 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 167HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Pond SWB: Stormtech MC 3500 (SWM-B) Inflow Area = 16,665 sf,100.00% Impervious, Inflow Depth = 7.52" for 100-Year event Inflow = 3.01 cfs @ 12.07 hrs, Volume= 10,444 cf Outflow = 0.54 cfs @ 12.51 hrs, Volume= 10,444 cf, Atten= 82%, Lag= 26.2 min Discarded = 0.10 cfs @ 8.82 hrs, Volume= 8,849 cf Primary = 0.45 cfs @ 12.51 hrs, Volume= 1,595 cf Routed to Link TSD : Total Site Discharge Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 179.47' @ 12.51 hrs Surf.Area= 1,738 sf Storage= 4,427 cf Plug-Flow detention time= 302.0 min calculated for 10,441 cf (100% of inflow) Center-of-Mass det. time= 302.1 min ( 1,042.7 - 740.7 ) Volume Invert Avail.Storage Storage Description #1A 175.65' 2,580 cf 8.42'W x 206.46'L x 5.50'H Field A 9,557 cf Overall - 3,108 cf Embedded = 6,449 cf x 40.0% Voids #2A 176.40' 3,108 cf ADS_StormTech MC-3500 d +Cap x 28 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 5,688 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 175.65'15.0" Round Outlet Pipe L= 45.0' CPP, end-section conforming to fill, Ke= 0.500 Inlet / Outlet Invert= 175.65' / 166.00' S= 0.2144 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf #2 Device 1 179.00'6.0" Vert. Low Flow Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 180.25'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 #4 Discarded 175.65'2.400 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 8.82 hrs HW=175.71' (Free Discharge) 4=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.45 cfs @ 12.51 hrs HW=179.47' (Free Discharge) 1=Outlet Pipe (Passes 0.45 cfs of 10.56 cfs potential flow) 2=Low Flow Orifice (Orifice Controls 0.45 cfs @ 2.34 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 168HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Pond SWB: Stormtech MC 3500 (SWM-B) - Chamber Wizard Field A Chamber Model = ADS_StormTech MC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 1 rows = 29.8 cf 28 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 204.46' Row Length +12.0" End Stone x 2 = 206.46' Base Length 1 Rows x 77.0" Wide + 12.0" Side Stone x 2 = 8.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 12.0" Stone Cover = 5.50' Field Height 28 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 1 Rows = 3,108.5 cf Chamber Storage 9,557.4 cf Field - 3,108.5 cf Chambers = 6,448.9 cf Stone x 40.0% Voids = 2,579.6 cf Stone Storage Chamber Storage + Stone Storage = 5,688.0 cf = 0.131 af Overall Storage Efficiency = 59.5% Overall System Size = 206.46' x 8.42' x 5.50' 28 Chambers 354.0 cy Field 238.8 cy Stone Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 169HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 175.65 0.00 0.00 0.00 175.66 0.10 0.10 0.00 175.67 0.10 0.10 0.00 175.68 0.10 0.10 0.00 175.69 0.10 0.10 0.00 175.70 0.10 0.10 0.00 175.71 0.10 0.10 0.00 175.72 0.10 0.10 0.00 175.73 0.10 0.10 0.00 175.74 0.10 0.10 0.00 175.75 0.10 0.10 0.00 175.76 0.10 0.10 0.00 175.77 0.10 0.10 0.00 175.78 0.10 0.10 0.00 175.79 0.10 0.10 0.00 175.80 0.10 0.10 0.00 175.81 0.10 0.10 0.00 175.82 0.10 0.10 0.00 175.83 0.10 0.10 0.00 175.84 0.10 0.10 0.00 175.85 0.10 0.10 0.00 175.86 0.10 0.10 0.00 175.87 0.10 0.10 0.00 175.88 0.10 0.10 0.00 175.89 0.10 0.10 0.00 175.90 0.10 0.10 0.00 175.91 0.10 0.10 0.00 175.92 0.10 0.10 0.00 175.93 0.10 0.10 0.00 175.94 0.10 0.10 0.00 175.95 0.10 0.10 0.00 175.96 0.10 0.10 0.00 175.97 0.10 0.10 0.00 175.98 0.10 0.10 0.00 175.99 0.10 0.10 0.00 176.00 0.10 0.10 0.00 176.01 0.10 0.10 0.00 176.02 0.10 0.10 0.00 176.03 0.10 0.10 0.00 176.04 0.10 0.10 0.00 176.05 0.10 0.10 0.00 176.06 0.10 0.10 0.00 176.07 0.10 0.10 0.00 176.08 0.10 0.10 0.00 176.09 0.10 0.10 0.00 176.10 0.10 0.10 0.00 176.11 0.10 0.10 0.00 176.12 0.10 0.10 0.00 176.13 0.10 0.10 0.00 176.14 0.10 0.10 0.00 176.15 0.10 0.10 0.00 176.16 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.17 0.10 0.10 0.00 176.18 0.10 0.10 0.00 176.19 0.10 0.10 0.00 176.20 0.10 0.10 0.00 176.21 0.10 0.10 0.00 176.22 0.10 0.10 0.00 176.23 0.10 0.10 0.00 176.24 0.10 0.10 0.00 176.25 0.10 0.10 0.00 176.26 0.10 0.10 0.00 176.27 0.10 0.10 0.00 176.28 0.10 0.10 0.00 176.29 0.10 0.10 0.00 176.30 0.10 0.10 0.00 176.31 0.10 0.10 0.00 176.32 0.10 0.10 0.00 176.33 0.10 0.10 0.00 176.34 0.10 0.10 0.00 176.35 0.10 0.10 0.00 176.36 0.10 0.10 0.00 176.37 0.10 0.10 0.00 176.38 0.10 0.10 0.00 176.39 0.10 0.10 0.00 176.40 0.10 0.10 0.00 176.41 0.10 0.10 0.00 176.42 0.10 0.10 0.00 176.43 0.10 0.10 0.00 176.44 0.10 0.10 0.00 176.45 0.10 0.10 0.00 176.46 0.10 0.10 0.00 176.47 0.10 0.10 0.00 176.48 0.10 0.10 0.00 176.49 0.10 0.10 0.00 176.50 0.10 0.10 0.00 176.51 0.10 0.10 0.00 176.52 0.10 0.10 0.00 176.53 0.10 0.10 0.00 176.54 0.10 0.10 0.00 176.55 0.10 0.10 0.00 176.56 0.10 0.10 0.00 176.57 0.10 0.10 0.00 176.58 0.10 0.10 0.00 176.59 0.10 0.10 0.00 176.60 0.10 0.10 0.00 176.61 0.10 0.10 0.00 176.62 0.10 0.10 0.00 176.63 0.10 0.10 0.00 176.64 0.10 0.10 0.00 176.65 0.10 0.10 0.00 176.66 0.10 0.10 0.00 176.67 0.10 0.10 0.00 176.68 0.10 0.10 0.00 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 170HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 176.69 0.10 0.10 0.00 176.70 0.10 0.10 0.00 176.71 0.10 0.10 0.00 176.72 0.10 0.10 0.00 176.73 0.10 0.10 0.00 176.74 0.10 0.10 0.00 176.75 0.10 0.10 0.00 176.76 0.10 0.10 0.00 176.77 0.10 0.10 0.00 176.78 0.10 0.10 0.00 176.79 0.10 0.10 0.00 176.80 0.10 0.10 0.00 176.81 0.10 0.10 0.00 176.82 0.10 0.10 0.00 176.83 0.10 0.10 0.00 176.84 0.10 0.10 0.00 176.85 0.10 0.10 0.00 176.86 0.10 0.10 0.00 176.87 0.10 0.10 0.00 176.88 0.10 0.10 0.00 176.89 0.10 0.10 0.00 176.90 0.10 0.10 0.00 176.91 0.10 0.10 0.00 176.92 0.10 0.10 0.00 176.93 0.10 0.10 0.00 176.94 0.10 0.10 0.00 176.95 0.10 0.10 0.00 176.96 0.10 0.10 0.00 176.97 0.10 0.10 0.00 176.98 0.10 0.10 0.00 176.99 0.10 0.10 0.00 177.00 0.10 0.10 0.00 177.01 0.10 0.10 0.00 177.02 0.10 0.10 0.00 177.03 0.10 0.10 0.00 177.04 0.10 0.10 0.00 177.05 0.10 0.10 0.00 177.06 0.10 0.10 0.00 177.07 0.10 0.10 0.00 177.08 0.10 0.10 0.00 177.09 0.10 0.10 0.00 177.10 0.10 0.10 0.00 177.11 0.10 0.10 0.00 177.12 0.10 0.10 0.00 177.13 0.10 0.10 0.00 177.14 0.10 0.10 0.00 177.15 0.10 0.10 0.00 177.16 0.10 0.10 0.00 177.17 0.10 0.10 0.00 177.18 0.10 0.10 0.00 177.19 0.10 0.10 0.00 177.20 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.21 0.10 0.10 0.00 177.22 0.10 0.10 0.00 177.23 0.10 0.10 0.00 177.24 0.10 0.10 0.00 177.25 0.10 0.10 0.00 177.26 0.10 0.10 0.00 177.27 0.10 0.10 0.00 177.28 0.10 0.10 0.00 177.29 0.10 0.10 0.00 177.30 0.10 0.10 0.00 177.31 0.10 0.10 0.00 177.32 0.10 0.10 0.00 177.33 0.10 0.10 0.00 177.34 0.10 0.10 0.00 177.35 0.10 0.10 0.00 177.36 0.10 0.10 0.00 177.37 0.10 0.10 0.00 177.38 0.10 0.10 0.00 177.39 0.10 0.10 0.00 177.40 0.10 0.10 0.00 177.41 0.10 0.10 0.00 177.42 0.10 0.10 0.00 177.43 0.10 0.10 0.00 177.44 0.10 0.10 0.00 177.45 0.10 0.10 0.00 177.46 0.10 0.10 0.00 177.47 0.10 0.10 0.00 177.48 0.10 0.10 0.00 177.49 0.10 0.10 0.00 177.50 0.10 0.10 0.00 177.51 0.10 0.10 0.00 177.52 0.10 0.10 0.00 177.53 0.10 0.10 0.00 177.54 0.10 0.10 0.00 177.55 0.10 0.10 0.00 177.56 0.10 0.10 0.00 177.57 0.10 0.10 0.00 177.58 0.10 0.10 0.00 177.59 0.10 0.10 0.00 177.60 0.10 0.10 0.00 177.61 0.10 0.10 0.00 177.62 0.10 0.10 0.00 177.63 0.10 0.10 0.00 177.64 0.10 0.10 0.00 177.65 0.10 0.10 0.00 177.66 0.10 0.10 0.00 177.67 0.10 0.10 0.00 177.68 0.10 0.10 0.00 177.69 0.10 0.10 0.00 177.70 0.10 0.10 0.00 177.71 0.10 0.10 0.00 177.72 0.10 0.10 0.00 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 171HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 177.73 0.10 0.10 0.00 177.74 0.10 0.10 0.00 177.75 0.10 0.10 0.00 177.76 0.10 0.10 0.00 177.77 0.10 0.10 0.00 177.78 0.10 0.10 0.00 177.79 0.10 0.10 0.00 177.80 0.10 0.10 0.00 177.81 0.10 0.10 0.00 177.82 0.10 0.10 0.00 177.83 0.10 0.10 0.00 177.84 0.10 0.10 0.00 177.85 0.10 0.10 0.00 177.86 0.10 0.10 0.00 177.87 0.10 0.10 0.00 177.88 0.10 0.10 0.00 177.89 0.10 0.10 0.00 177.90 0.10 0.10 0.00 177.91 0.10 0.10 0.00 177.92 0.10 0.10 0.00 177.93 0.10 0.10 0.00 177.94 0.10 0.10 0.00 177.95 0.10 0.10 0.00 177.96 0.10 0.10 0.00 177.97 0.10 0.10 0.00 177.98 0.10 0.10 0.00 177.99 0.10 0.10 0.00 178.00 0.10 0.10 0.00 178.01 0.10 0.10 0.00 178.02 0.10 0.10 0.00 178.03 0.10 0.10 0.00 178.04 0.10 0.10 0.00 178.05 0.10 0.10 0.00 178.06 0.10 0.10 0.00 178.07 0.10 0.10 0.00 178.08 0.10 0.10 0.00 178.09 0.10 0.10 0.00 178.10 0.10 0.10 0.00 178.11 0.10 0.10 0.00 178.12 0.10 0.10 0.00 178.13 0.10 0.10 0.00 178.14 0.10 0.10 0.00 178.15 0.10 0.10 0.00 178.16 0.10 0.10 0.00 178.17 0.10 0.10 0.00 178.18 0.10 0.10 0.00 178.19 0.10 0.10 0.00 178.20 0.10 0.10 0.00 178.21 0.10 0.10 0.00 178.22 0.10 0.10 0.00 178.23 0.10 0.10 0.00 178.24 0.10 0.10 0.00 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.25 0.10 0.10 0.00 178.26 0.10 0.10 0.00 178.27 0.10 0.10 0.00 178.28 0.10 0.10 0.00 178.29 0.10 0.10 0.00 178.30 0.10 0.10 0.00 178.31 0.10 0.10 0.00 178.32 0.10 0.10 0.00 178.33 0.10 0.10 0.00 178.34 0.10 0.10 0.00 178.35 0.10 0.10 0.00 178.36 0.10 0.10 0.00 178.37 0.10 0.10 0.00 178.38 0.10 0.10 0.00 178.39 0.10 0.10 0.00 178.40 0.10 0.10 0.00 178.41 0.10 0.10 0.00 178.42 0.10 0.10 0.00 178.43 0.10 0.10 0.00 178.44 0.10 0.10 0.00 178.45 0.10 0.10 0.00 178.46 0.10 0.10 0.00 178.47 0.10 0.10 0.00 178.48 0.10 0.10 0.00 178.49 0.10 0.10 0.00 178.50 0.10 0.10 0.00 178.51 0.10 0.10 0.00 178.52 0.10 0.10 0.00 178.53 0.10 0.10 0.00 178.54 0.10 0.10 0.00 178.55 0.10 0.10 0.00 178.56 0.10 0.10 0.00 178.57 0.10 0.10 0.00 178.58 0.10 0.10 0.00 178.59 0.10 0.10 0.00 178.60 0.10 0.10 0.00 178.61 0.10 0.10 0.00 178.62 0.10 0.10 0.00 178.63 0.10 0.10 0.00 178.64 0.10 0.10 0.00 178.65 0.10 0.10 0.00 178.66 0.10 0.10 0.00 178.67 0.10 0.10 0.00 178.68 0.10 0.10 0.00 178.69 0.10 0.10 0.00 178.70 0.10 0.10 0.00 178.71 0.10 0.10 0.00 178.72 0.10 0.10 0.00 178.73 0.10 0.10 0.00 178.74 0.10 0.10 0.00 178.75 0.10 0.10 0.00 178.76 0.10 0.10 0.00 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 172HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 178.77 0.10 0.10 0.00 178.78 0.10 0.10 0.00 178.79 0.10 0.10 0.00 178.80 0.10 0.10 0.00 178.81 0.10 0.10 0.00 178.82 0.10 0.10 0.00 178.83 0.10 0.10 0.00 178.84 0.10 0.10 0.00 178.85 0.10 0.10 0.00 178.86 0.10 0.10 0.00 178.87 0.10 0.10 0.00 178.88 0.10 0.10 0.00 178.89 0.10 0.10 0.00 178.90 0.10 0.10 0.00 178.91 0.10 0.10 0.00 178.92 0.10 0.10 0.00 178.93 0.10 0.10 0.00 178.94 0.10 0.10 0.00 178.95 0.10 0.10 0.00 178.96 0.10 0.10 0.00 178.97 0.10 0.10 0.00 178.98 0.10 0.10 0.00 178.99 0.10 0.10 0.00 179.00 0.10 0.10 0.00 179.01 0.10 0.10 0.00 179.02 0.10 0.10 0.00 179.03 0.10 0.10 0.00 179.04 0.10 0.10 0.01 179.05 0.10 0.10 0.01 179.06 0.11 0.10 0.01 179.07 0.11 0.10 0.02 179.08 0.12 0.10 0.02 179.09 0.12 0.10 0.02 179.10 0.13 0.10 0.03 179.11 0.13 0.10 0.04 179.12 0.14 0.10 0.04 179.13 0.15 0.10 0.05 179.14 0.15 0.10 0.06 179.15 0.16 0.10 0.07 179.16 0.17 0.10 0.07 179.17 0.18 0.10 0.08 179.18 0.19 0.10 0.09 179.19 0.20 0.10 0.10 179.20 0.21 0.10 0.11 179.21 0.22 0.10 0.12 179.22 0.23 0.10 0.13 179.23 0.24 0.10 0.14 179.24 0.25 0.10 0.16 179.25 0.26 0.10 0.17 179.26 0.28 0.10 0.18 179.27 0.29 0.10 0.19 179.28 0.30 0.10 0.20 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.29 0.31 0.10 0.22 179.30 0.33 0.10 0.23 179.31 0.34 0.10 0.24 179.32 0.35 0.10 0.26 179.33 0.37 0.10 0.27 179.34 0.38 0.10 0.28 179.35 0.39 0.10 0.30 179.36 0.41 0.10 0.31 179.37 0.42 0.10 0.32 179.38 0.43 0.10 0.34 179.39 0.45 0.10 0.35 179.40 0.46 0.10 0.36 179.41 0.47 0.10 0.38 179.42 0.49 0.10 0.39 179.43 0.50 0.10 0.40 179.44 0.51 0.10 0.41 179.45 0.52 0.10 0.43 179.46 0.53 0.10 0.44 179.47 0.54 0.10 0.45 179.48 0.55 0.10 0.46 179.49 0.56 0.10 0.47 179.50 0.57 0.10 0.47 179.51 0.58 0.10 0.48 179.52 0.59 0.10 0.49 179.53 0.60 0.10 0.50 179.54 0.61 0.10 0.51 179.55 0.61 0.10 0.52 179.56 0.62 0.10 0.53 179.57 0.63 0.10 0.53 179.58 0.64 0.10 0.54 179.59 0.65 0.10 0.55 179.60 0.66 0.10 0.56 179.61 0.66 0.10 0.57 179.62 0.67 0.10 0.58 179.63 0.68 0.10 0.58 179.64 0.69 0.10 0.59 179.65 0.69 0.10 0.60 179.66 0.70 0.10 0.61 179.67 0.71 0.10 0.61 179.68 0.72 0.10 0.62 179.69 0.72 0.10 0.63 179.70 0.73 0.10 0.63 179.71 0.74 0.10 0.64 179.72 0.74 0.10 0.65 179.73 0.75 0.10 0.66 179.74 0.76 0.10 0.66 179.75 0.77 0.10 0.67 179.76 0.77 0.10 0.68 179.77 0.78 0.10 0.68 179.78 0.78 0.10 0.69 179.79 0.79 0.10 0.69 179.80 0.80 0.10 0.70 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 173HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 179.81 0.80 0.10 0.71 179.82 0.81 0.10 0.71 179.83 0.82 0.10 0.72 179.84 0.82 0.10 0.73 179.85 0.83 0.10 0.73 179.86 0.83 0.10 0.74 179.87 0.84 0.10 0.74 179.88 0.85 0.10 0.75 179.89 0.85 0.10 0.76 179.90 0.86 0.10 0.76 179.91 0.86 0.10 0.77 179.92 0.87 0.10 0.77 179.93 0.88 0.10 0.78 179.94 0.88 0.10 0.79 179.95 0.89 0.10 0.79 179.96 0.89 0.10 0.80 179.97 0.90 0.10 0.80 179.98 0.90 0.10 0.81 179.99 0.91 0.10 0.81 180.00 0.92 0.10 0.82 180.01 0.92 0.10 0.82 180.02 0.93 0.10 0.83 180.03 0.93 0.10 0.83 180.04 0.94 0.10 0.84 180.05 0.94 0.10 0.85 180.06 0.95 0.10 0.85 180.07 0.95 0.10 0.86 180.08 0.96 0.10 0.86 180.09 0.96 0.10 0.87 180.10 0.97 0.10 0.87 180.11 0.97 0.10 0.88 180.12 0.98 0.10 0.88 180.13 0.98 0.10 0.89 180.14 0.99 0.10 0.89 180.15 0.99 0.10 0.90 180.16 1.00 0.10 0.90 180.17 1.00 0.10 0.91 180.18 1.01 0.10 0.91 180.19 1.01 0.10 0.92 180.20 1.02 0.10 0.92 180.21 1.02 0.10 0.93 180.22 1.03 0.10 0.93 180.23 1.03 0.10 0.94 180.24 1.04 0.10 0.94 180.25 1.04 0.10 0.95 180.26 1.06 0.10 0.96 180.27 1.08 0.10 0.99 180.28 1.11 0.10 1.02 180.29 1.15 0.10 1.05 180.30 1.19 0.10 1.09 180.31 1.23 0.10 1.14 180.32 1.28 0.10 1.19 Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.33 1.33 0.10 1.24 180.34 1.39 0.10 1.29 180.35 1.44 0.10 1.35 180.36 1.50 0.10 1.40 180.37 1.56 0.10 1.47 180.38 1.63 0.10 1.53 180.39 1.69 0.10 1.60 180.40 1.76 0.10 1.66 180.41 1.83 0.10 1.74 180.42 1.90 0.10 1.81 180.43 1.98 0.10 1.88 180.44 2.06 0.10 1.96 180.45 2.13 0.10 2.04 180.46 2.22 0.10 2.12 180.47 2.30 0.10 2.20 180.48 2.39 0.10 2.29 180.49 2.48 0.10 2.38 180.50 2.57 0.10 2.47 180.51 2.66 0.10 2.57 180.52 2.76 0.10 2.66 180.53 2.85 0.10 2.76 180.54 2.95 0.10 2.86 180.55 3.05 0.10 2.96 180.56 3.16 0.10 3.06 180.57 3.26 0.10 3.17 180.58 3.37 0.10 3.27 180.59 3.48 0.10 3.38 180.60 3.59 0.10 3.49 180.61 3.70 0.10 3.60 180.62 3.82 0.10 3.72 180.63 3.93 0.10 3.84 180.64 4.05 0.10 3.95 180.65 4.17 0.10 4.07 180.66 4.29 0.10 4.20 180.67 4.42 0.10 4.32 180.68 4.55 0.10 4.45 180.69 4.68 0.10 4.58 180.70 4.81 0.10 4.71 180.71 4.94 0.10 4.85 180.72 5.08 0.10 4.98 180.73 5.22 0.10 5.12 180.74 5.36 0.10 5.26 180.75 5.50 0.10 5.40 180.76 5.64 0.10 5.54 180.77 5.79 0.10 5.69 180.78 5.93 0.10 5.84 180.79 6.08 0.10 5.99 180.80 6.23 0.10 6.14 180.81 6.39 0.10 6.29 180.82 6.54 0.10 6.45 180.83 6.70 0.10 6.60 180.84 6.86 0.10 6.76 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 174HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Discharge for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Discharge (cfs) Discarded (cfs) Primary (cfs) 180.85 7.02 0.10 6.92 180.86 7.19 0.10 7.09 180.87 7.36 0.10 7.26 180.88 7.53 0.10 7.43 180.89 7.71 0.10 7.61 180.90 7.88 0.10 7.79 180.91 8.06 0.10 7.97 180.92 8.24 0.10 8.15 180.93 8.43 0.10 8.33 180.94 8.61 0.10 8.52 180.95 8.80 0.10 8.71 180.96 8.99 0.10 8.90 180.97 9.19 0.10 9.09 180.98 9.38 0.10 9.28 180.99 9.58 0.10 9.48 181.00 9.78 0.10 9.68 181.01 9.98 0.10 9.88 181.02 10.18 0.10 10.09 181.03 10.39 0.10 10.29 181.04 10.60 0.10 10.50 181.05 10.81 0.10 10.71 181.06 10.99 0.10 10.90 181.07 11.18 0.10 11.08 181.08 11.37 0.10 11.27 181.09 11.55 0.10 11.46 181.10 11.74 0.10 11.65 181.11 11.93 0.10 11.84 181.12 12.12 0.10 12.03 181.13 12.32 0.10 12.22 181.14 12.51 0.10 12.41 181.15 12.70 0.10 12.61 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 175HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 175.65 1,738 0 175.66 1,738 7 175.67 1,738 14 175.68 1,738 21 175.69 1,738 28 175.70 1,738 35 175.71 1,738 42 175.72 1,738 49 175.73 1,738 56 175.74 1,738 63 175.75 1,738 70 175.76 1,738 76 175.77 1,738 83 175.78 1,738 90 175.79 1,738 97 175.80 1,738 104 175.81 1,738 111 175.82 1,738 118 175.83 1,738 125 175.84 1,738 132 175.85 1,738 139 175.86 1,738 146 175.87 1,738 153 175.88 1,738 160 175.89 1,738 167 175.90 1,738 174 175.91 1,738 181 175.92 1,738 188 175.93 1,738 195 175.94 1,738 202 175.95 1,738 209 175.96 1,738 215 175.97 1,738 222 175.98 1,738 229 175.99 1,738 236 176.00 1,738 243 176.01 1,738 250 176.02 1,738 257 176.03 1,738 264 176.04 1,738 271 176.05 1,738 278 176.06 1,738 285 176.07 1,738 292 176.08 1,738 299 176.09 1,738 306 176.10 1,738 313 176.11 1,738 320 176.12 1,738 327 176.13 1,738 334 176.14 1,738 341 176.15 1,738 348 176.16 1,738 354 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.17 1,738 361 176.18 1,738 368 176.19 1,738 375 176.20 1,738 382 176.21 1,738 389 176.22 1,738 396 176.23 1,738 403 176.24 1,738 410 176.25 1,738 417 176.26 1,738 424 176.27 1,738 431 176.28 1,738 438 176.29 1,738 445 176.30 1,738 452 176.31 1,738 459 176.32 1,738 466 176.33 1,738 473 176.34 1,738 480 176.35 1,738 487 176.36 1,738 494 176.37 1,738 500 176.38 1,738 507 176.39 1,738 514 176.40 1,738 521 176.41 1,738 535 176.42 1,738 549 176.43 1,738 564 176.44 1,738 578 176.45 1,738 592 176.46 1,738 606 176.47 1,738 620 176.48 1,738 634 176.49 1,738 648 176.50 1,738 662 176.51 1,738 676 176.52 1,738 690 176.53 1,738 704 176.54 1,738 718 176.55 1,738 732 176.56 1,738 746 176.57 1,738 760 176.58 1,738 774 176.59 1,738 788 176.60 1,738 802 176.61 1,738 816 176.62 1,738 830 176.63 1,738 844 176.64 1,738 858 176.65 1,738 872 176.66 1,738 886 176.67 1,738 900 176.68 1,738 914 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 176HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 176.69 1,738 928 176.70 1,738 942 176.71 1,738 956 176.72 1,738 970 176.73 1,738 984 176.74 1,738 998 176.75 1,738 1,012 176.76 1,738 1,025 176.77 1,738 1,039 176.78 1,738 1,053 176.79 1,738 1,067 176.80 1,738 1,081 176.81 1,738 1,095 176.82 1,738 1,109 176.83 1,738 1,123 176.84 1,738 1,137 176.85 1,738 1,150 176.86 1,738 1,164 176.87 1,738 1,178 176.88 1,738 1,192 176.89 1,738 1,206 176.90 1,738 1,220 176.91 1,738 1,233 176.92 1,738 1,247 176.93 1,738 1,261 176.94 1,738 1,275 176.95 1,738 1,289 176.96 1,738 1,303 176.97 1,738 1,316 176.98 1,738 1,330 176.99 1,738 1,344 177.00 1,738 1,358 177.01 1,738 1,371 177.02 1,738 1,385 177.03 1,738 1,399 177.04 1,738 1,413 177.05 1,738 1,427 177.06 1,738 1,440 177.07 1,738 1,454 177.08 1,738 1,468 177.09 1,738 1,481 177.10 1,738 1,495 177.11 1,738 1,509 177.12 1,738 1,523 177.13 1,738 1,536 177.14 1,738 1,550 177.15 1,738 1,564 177.16 1,738 1,577 177.17 1,738 1,591 177.18 1,738 1,605 177.19 1,738 1,618 177.20 1,738 1,632 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.21 1,738 1,646 177.22 1,738 1,659 177.23 1,738 1,673 177.24 1,738 1,686 177.25 1,738 1,700 177.26 1,738 1,714 177.27 1,738 1,727 177.28 1,738 1,741 177.29 1,738 1,754 177.30 1,738 1,768 177.31 1,738 1,782 177.32 1,738 1,795 177.33 1,738 1,809 177.34 1,738 1,822 177.35 1,738 1,836 177.36 1,738 1,849 177.37 1,738 1,863 177.38 1,738 1,876 177.39 1,738 1,890 177.40 1,738 1,903 177.41 1,738 1,917 177.42 1,738 1,930 177.43 1,738 1,944 177.44 1,738 1,957 177.45 1,738 1,971 177.46 1,738 1,984 177.47 1,738 1,998 177.48 1,738 2,011 177.49 1,738 2,025 177.50 1,738 2,038 177.51 1,738 2,051 177.52 1,738 2,065 177.53 1,738 2,078 177.54 1,738 2,092 177.55 1,738 2,105 177.56 1,738 2,118 177.57 1,738 2,132 177.58 1,738 2,145 177.59 1,738 2,158 177.60 1,738 2,172 177.61 1,738 2,185 177.62 1,738 2,198 177.63 1,738 2,212 177.64 1,738 2,225 177.65 1,738 2,238 177.66 1,738 2,252 177.67 1,738 2,265 177.68 1,738 2,278 177.69 1,738 2,291 177.70 1,738 2,305 177.71 1,738 2,318 177.72 1,738 2,331 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 177HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 177.73 1,738 2,344 177.74 1,738 2,358 177.75 1,738 2,371 177.76 1,738 2,384 177.77 1,738 2,397 177.78 1,738 2,410 177.79 1,738 2,423 177.80 1,738 2,437 177.81 1,738 2,450 177.82 1,738 2,463 177.83 1,738 2,476 177.84 1,738 2,489 177.85 1,738 2,502 177.86 1,738 2,515 177.87 1,738 2,528 177.88 1,738 2,541 177.89 1,738 2,554 177.90 1,738 2,567 177.91 1,738 2,581 177.92 1,738 2,594 177.93 1,738 2,607 177.94 1,738 2,620 177.95 1,738 2,633 177.96 1,738 2,646 177.97 1,738 2,658 177.98 1,738 2,671 177.99 1,738 2,684 178.00 1,738 2,697 178.01 1,738 2,710 178.02 1,738 2,723 178.03 1,738 2,736 178.04 1,738 2,749 178.05 1,738 2,762 178.06 1,738 2,775 178.07 1,738 2,788 178.08 1,738 2,800 178.09 1,738 2,813 178.10 1,738 2,826 178.11 1,738 2,839 178.12 1,738 2,852 178.13 1,738 2,864 178.14 1,738 2,877 178.15 1,738 2,890 178.16 1,738 2,903 178.17 1,738 2,915 178.18 1,738 2,928 178.19 1,738 2,941 178.20 1,738 2,954 178.21 1,738 2,966 178.22 1,738 2,979 178.23 1,738 2,992 178.24 1,738 3,004 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.25 1,738 3,017 178.26 1,738 3,030 178.27 1,738 3,042 178.28 1,738 3,055 178.29 1,738 3,067 178.30 1,738 3,080 178.31 1,738 3,092 178.32 1,738 3,105 178.33 1,738 3,117 178.34 1,738 3,130 178.35 1,738 3,143 178.36 1,738 3,155 178.37 1,738 3,167 178.38 1,738 3,180 178.39 1,738 3,192 178.40 1,738 3,205 178.41 1,738 3,217 178.42 1,738 3,230 178.43 1,738 3,242 178.44 1,738 3,254 178.45 1,738 3,267 178.46 1,738 3,279 178.47 1,738 3,291 178.48 1,738 3,304 178.49 1,738 3,316 178.50 1,738 3,328 178.51 1,738 3,341 178.52 1,738 3,353 178.53 1,738 3,365 178.54 1,738 3,377 178.55 1,738 3,389 178.56 1,738 3,402 178.57 1,738 3,414 178.58 1,738 3,426 178.59 1,738 3,438 178.60 1,738 3,450 178.61 1,738 3,462 178.62 1,738 3,474 178.63 1,738 3,487 178.64 1,738 3,499 178.65 1,738 3,511 178.66 1,738 3,523 178.67 1,738 3,535 178.68 1,738 3,547 178.69 1,738 3,559 178.70 1,738 3,571 178.71 1,738 3,582 178.72 1,738 3,594 178.73 1,738 3,606 178.74 1,738 3,618 178.75 1,738 3,630 178.76 1,738 3,642 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 178HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 178.77 1,738 3,654 178.78 1,738 3,665 178.79 1,738 3,677 178.80 1,738 3,689 178.81 1,738 3,701 178.82 1,738 3,713 178.83 1,738 3,724 178.84 1,738 3,736 178.85 1,738 3,748 178.86 1,738 3,759 178.87 1,738 3,771 178.88 1,738 3,783 178.89 1,738 3,794 178.90 1,738 3,806 178.91 1,738 3,817 178.92 1,738 3,829 178.93 1,738 3,840 178.94 1,738 3,852 178.95 1,738 3,863 178.96 1,738 3,875 178.97 1,738 3,886 178.98 1,738 3,898 178.99 1,738 3,909 179.00 1,738 3,920 179.01 1,738 3,932 179.02 1,738 3,943 179.03 1,738 3,954 179.04 1,738 3,965 179.05 1,738 3,977 179.06 1,738 3,988 179.07 1,738 3,999 179.08 1,738 4,010 179.09 1,738 4,022 179.10 1,738 4,033 179.11 1,738 4,044 179.12 1,738 4,055 179.13 1,738 4,066 179.14 1,738 4,077 179.15 1,738 4,088 179.16 1,738 4,099 179.17 1,738 4,110 179.18 1,738 4,121 179.19 1,738 4,132 179.20 1,738 4,143 179.21 1,738 4,154 179.22 1,738 4,164 179.23 1,738 4,175 179.24 1,738 4,186 179.25 1,738 4,197 179.26 1,738 4,207 179.27 1,738 4,218 179.28 1,738 4,229 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.29 1,738 4,239 179.30 1,738 4,250 179.31 1,738 4,261 179.32 1,738 4,271 179.33 1,738 4,282 179.34 1,738 4,292 179.35 1,738 4,303 179.36 1,738 4,313 179.37 1,738 4,323 179.38 1,738 4,334 179.39 1,738 4,344 179.40 1,738 4,354 179.41 1,738 4,365 179.42 1,738 4,375 179.43 1,738 4,385 179.44 1,738 4,395 179.45 1,738 4,405 179.46 1,738 4,416 179.47 1,738 4,426 179.48 1,738 4,436 179.49 1,738 4,446 179.50 1,738 4,456 179.51 1,738 4,466 179.52 1,738 4,475 179.53 1,738 4,485 179.54 1,738 4,495 179.55 1,738 4,505 179.56 1,738 4,514 179.57 1,738 4,524 179.58 1,738 4,534 179.59 1,738 4,543 179.60 1,738 4,553 179.61 1,738 4,562 179.62 1,738 4,572 179.63 1,738 4,581 179.64 1,738 4,591 179.65 1,738 4,600 179.66 1,738 4,609 179.67 1,738 4,618 179.68 1,738 4,627 179.69 1,738 4,636 179.70 1,738 4,645 179.71 1,738 4,654 179.72 1,738 4,663 179.73 1,738 4,672 179.74 1,738 4,680 179.75 1,738 4,689 179.76 1,738 4,698 179.77 1,738 4,706 179.78 1,738 4,714 179.79 1,738 4,723 179.80 1,738 4,731 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 179HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 179.81 1,738 4,739 179.82 1,738 4,747 179.83 1,738 4,755 179.84 1,738 4,763 179.85 1,738 4,771 179.86 1,738 4,779 179.87 1,738 4,787 179.88 1,738 4,795 179.89 1,738 4,802 179.90 1,738 4,810 179.91 1,738 4,818 179.92 1,738 4,825 179.93 1,738 4,833 179.94 1,738 4,840 179.95 1,738 4,848 179.96 1,738 4,855 179.97 1,738 4,863 179.98 1,738 4,870 179.99 1,738 4,878 180.00 1,738 4,885 180.01 1,738 4,893 180.02 1,738 4,900 180.03 1,738 4,907 180.04 1,738 4,915 180.05 1,738 4,922 180.06 1,738 4,929 180.07 1,738 4,936 180.08 1,738 4,944 180.09 1,738 4,951 180.10 1,738 4,958 180.11 1,738 4,965 180.12 1,738 4,972 180.13 1,738 4,979 180.14 1,738 4,986 180.15 1,738 4,993 180.16 1,738 5,000 180.17 1,738 5,007 180.18 1,738 5,014 180.19 1,738 5,021 180.20 1,738 5,028 180.21 1,738 5,035 180.22 1,738 5,042 180.23 1,738 5,049 180.24 1,738 5,055 180.25 1,738 5,062 180.26 1,738 5,069 180.27 1,738 5,076 180.28 1,738 5,083 180.29 1,738 5,090 180.30 1,738 5,097 180.31 1,738 5,104 180.32 1,738 5,111 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.33 1,738 5,118 180.34 1,738 5,125 180.35 1,738 5,132 180.36 1,738 5,139 180.37 1,738 5,146 180.38 1,738 5,153 180.39 1,738 5,160 180.40 1,738 5,167 180.41 1,738 5,174 180.42 1,738 5,181 180.43 1,738 5,188 180.44 1,738 5,195 180.45 1,738 5,201 180.46 1,738 5,208 180.47 1,738 5,215 180.48 1,738 5,222 180.49 1,738 5,229 180.50 1,738 5,236 180.51 1,738 5,243 180.52 1,738 5,250 180.53 1,738 5,257 180.54 1,738 5,264 180.55 1,738 5,271 180.56 1,738 5,278 180.57 1,738 5,285 180.58 1,738 5,292 180.59 1,738 5,299 180.60 1,738 5,306 180.61 1,738 5,313 180.62 1,738 5,320 180.63 1,738 5,327 180.64 1,738 5,334 180.65 1,738 5,340 180.66 1,738 5,347 180.67 1,738 5,354 180.68 1,738 5,361 180.69 1,738 5,368 180.70 1,738 5,375 180.71 1,738 5,382 180.72 1,738 5,389 180.73 1,738 5,396 180.74 1,738 5,403 180.75 1,738 5,410 180.76 1,738 5,417 180.77 1,738 5,424 180.78 1,738 5,431 180.79 1,738 5,438 180.80 1,738 5,445 180.81 1,738 5,452 180.82 1,738 5,459 180.83 1,738 5,466 180.84 1,738 5,473 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 180HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond SWB: Stormtech MC 3500 (SWM-B) (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 180.85 1,738 5,479 180.86 1,738 5,486 180.87 1,738 5,493 180.88 1,738 5,500 180.89 1,738 5,507 180.90 1,738 5,514 180.91 1,738 5,521 180.92 1,738 5,528 180.93 1,738 5,535 180.94 1,738 5,542 180.95 1,738 5,549 180.96 1,738 5,556 180.97 1,738 5,563 180.98 1,738 5,570 180.99 1,738 5,577 181.00 1,738 5,584 181.01 1,738 5,591 181.02 1,738 5,598 181.03 1,738 5,605 181.04 1,738 5,612 181.05 1,738 5,619 181.06 1,738 5,625 181.07 1,738 5,632 181.08 1,738 5,639 181.09 1,738 5,646 181.10 1,738 5,653 181.11 1,738 5,660 181.12 1,738 5,667 181.13 1,738 5,674 181.14 1,738 5,681 181.15 1,738 5,688 Type III 24-hr 100-Year Rainfall=7.76"post development Printed 11/8/2022Prepared by HH Engineering Assoc Page 181HydroCAD® 10.20-2g s/n 12772 © 2022 HydroCAD Software Solutions LLC Summary for Link TSD: Total Site Discharge Inflow Area = 119,968 sf, 21.15% Impervious, Inflow Depth = 3.12" for 100-Year event Inflow = 9.81 cfs @ 12.15 hrs, Volume= 31,168 cf Primary = 9.81 cfs @ 12.15 hrs, Volume= 31,168 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs