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HomeMy WebLinkAbout28.2REFERENCE IS MADE TO 1.) Connecticut Guidelines for Soil Erosion and Sediment Control, 2002. 2.) Soil Survey of New London County Connecticut, U.S.D.A. Soil Conservation Service 1983. DEVELOPMENT Proposed Development will allow for the creation of 2 building lots with associated grading, driveway access, on site septic systems, underground utlities, drilled wells, and home construction. The development will utilize an existing wetlands crossing to access one of the sites. SOILS The proposed site is composed of the following soil types: "Rn" Ridggbgry - Extremely stony fine sandy loam "CrC" Charlton -Hollis - Fine sandy looms, very rock, 3 to 15 percent slopes "CrD" Charlton -Hollis - Fine sandy looms, very rocky, 15 to 45 percent slopes DEVELOPMENT SCH It is anticipated that grading and house construction activities will begin Spring or early spring of 2005 and will be completed within six months. SEQUENCE OF CONSTRUCTION - PROPOSED ROAD 1 Install erosion and sediment control structures. 2. Clear, grub and rough grade proposed road. 3. Install underground utilities and drainage. 4. Install gravel base, binder course and bituminous curbing. 5. Install utility boxes. 6. Place finish bituminous course and sidewalks. 7. Loam, seed and mulch disturbed areas. Provide street trees. 8. Provide signage. 9. Remove erosion and sediment control structures. SEQUENCE OF CONSTRUCTION - INDIVIDUAL LOTS 1. Install erosion and sediment control devices. 2. Provide non -tracking construction entrance at proposed driveway. 3. Clear, grub and rough grade proposed driveway and site. 4. Excavate foundation hole and begin house construction. 5. Install septic system and well. 6. Complete house construction. 7. Complete final grading and install driveway. 8. Loam, seed and mulch disturbed areas. 9. Remov(: erosion and sediment control devices. Prior to the commencement of operations in accordance with any permit issued by the Town of Montville, the Contractor shall install all erosion and sediment control devices. The Contractor shall obtain a site inspection from the Town of Montville Zoning Enforcement Officer to ensure that all erosion and sediment control measures have been installed in accordance with this narrative. Upon certification with respect to the installation of erosion and sediment control measures, the Contractor may commence operations pursuant to the permit. Erosion and sediment control devices shall be installed in accordance with the "Filt.r Barrier Installation y,_ "v r _ V e" �­J "-lay Bele Instollction & Maintenonce" sections of this narrative hereinafter Dust control will be accomplished by spraying with water. The proposed planting schedule is to be adhered to during the planting of disturbed areas throughout the proposed construction site. Final stabilization of the site is to follow the procedures outlined in permanent vegetative cover. If necessary a temporary vegetative cover is to be provided until a permanent cover can be applied. During the stabilization period, all erosion and sediment control devices control devices shall be maintained in proper working order. The Owner's representative shall be responsible for checking all erosion and sediment control measures on a twice -weekly basis during the stabilization period and after each storm event. During the stabilization period, with respect to the site,. any erosion which occurs within disturbed areas shall be immediately repaired and restabilized. Once stabilization has been completed and certification thereof obtained in writing from the Zoning Enforcement Officer of the Town of Montville, erosion and sediment control devices shall be removed by the Contractor. Proposed trees will be planted with the following precautions: 1. Trees (:,nd shrubs are to be planted in the spring. 2. Newly planted trees are to be staked and supported with guy wire. 3. Soil of <>und trees and shrubs is to be thoroughly watered when dry and mulch provided around tho base to prevent roots from drying out. Provide a depression at the base of all trees and shrubs to insure the water will be received. FILTER BARRIER INSTALLATION & MAINTENANCE 1.) Dig a 6" trench on the uphill side of the barrier location. 2.) Position the posts on the downhill side of the barrier and drive the post 1.5 feet into the ground. 3.) Lay the bottom 6" of the fabric in the trench to prevent undermining and backfill. 4.) Inspect and repair barrier after heavy rainfall. 5.) Sediment deposits are to be removed when they reach a height of one foot behind the barrier and are to be deposited in an area which is not regulated by the Inland Wetlands Commission. 6.) Inspections and necessary repairs will be made twice -weekly. QUALITY CONTROL CERTIF CATION GROUP REVIEWED DATE PROJECT MANAGER SURVEY ENVIRONMENTAL CIVIL STRUCTURAL ARCHITECTURAL FT IF _1489 NSTALLATION &_ MAINTEN_AN_ 1.) Bales shall be placed around all proposed catch basins with the ends of the bales tightly abutting each other. 2.) Each bale shall be securely anchored with at least 2 stakes and gaps between bales shall be wedged with straw to prevent water from passing between the bales. 3.) Inspect bales after each storm and repair or replace promptly as needed. Remove sediment behind the bales when it has reached half the height of the bale and deposit in an area which is not regulated by the Inland Wetlands Commission. 4.) Inspections and necessary repairs will be made twice -weekly. PERMANENT VEGETATIVE COVER Topsoil will be replaced once the excavation has been completed and the shoulders are graded to a slope no greater than 3 to 1. Topsoil will be spread at a minimum compacted depth of 4 inches. Once the topsoil has been spread, all stones two inches or larger in any dimension will be removed as well as debris. Apply agricultural ground limestone at the rate of two tons per acre or 100 lbs. per 1000 s.f. Apply 10-10-10 fertilizer or equivalent at a rate of 300 lbs. per acre or 7.5 lbs. per 1000 s.f. Work lime and fertilizer into the soil to a depth of 4 inches. Inspect seedbed before seeding. If traffic has compacted the soil, retill compacted areas. Apply the following gross seed mix: PERC. = 15 MIN./IN. TEST HOLE #2 Seed Mixture Kentucky Bluegrass: 20 lbs./acre - .45 lbs/1000 sf Creeping Red Fescue: 20 lbs./acre - .45 lbs/1000 sf Perennial Rye Grass: 5 lbs./acre - .10 lbs/1000 sf The recommended seeding dates are April 1 through June 30 and August 1 through September 30. Following seeding, firm seedbed with a roller. Mulch immediately following seeding. If a permanent vegetative stand cannot be established by September 30, apply a temporary cover on the topsoil such as netting, mat or an organic mulch. TEST HOLE DATA PER DAVID COUGHLIN, PERC TEST DATA PER DAVID COUGHLIN, UNCAS HEALTH DISTRICT UNCAS HEALTH DISTRICT DATE: 5/20/04 0 LN am, DATE: 5/20/04 TEST HOLE #1 N t- O W LL_ = O PERS 0"-8" TOPSOIL 0 PRESOAK 10:41 am 8"-34" BROWN SANDY LOAM DEPTH - 14" 34"71" GREY MEDIUM COMPACT SANDY TILL 2:12 - 4" WATER @ 42" U►� 2:42 - 10 1/2#1 MOTTLING © 34" " U W 3:12 - 12 1/211 LEDGE @ 71 Z J = J � PERC. = 15 MIN./IN. TEST HOLE #2 ��// F- 0"-3" TOPSOIL 0 N Z 3"-32" BROWN SANDY LOAM PRESOAK 11:33 am 32"-61" GREY MEDIUM COMPACT SANDY TILL DEPTH - 28" NO WATER a 2:05 - 16" MOTTLING © 32" � 2.28 21 '� LEDGE @61 " � 2:50 - 24" TEST HOLE ##3 �8 3:03 - 26" 0"-3" TOPSOIL " PERC. = 6.5 MIN./IN. 3"-31 BROWN SANDY LOAM 31"-52" GREY MEDIUM COMPACT SANDY TILL l U WATER @ 48" t� 3 .� rti MOTTLING C9 31" �' LEDGE Q 52" TEST HOLE #4 0"-4" TOPSOIL a � 4"-29" BROWN SANDY LOAM 29"-49" GREY MEDIUM COMPACT SANDY TILL NO WATER MOTTLING @ 29" N LEDGE © 49" TEST HOLE #5 0"-12" TOPSOIL 12"-27" BROWN SANDY LOAM W 27"-69" GREY MEDIUM TO FINE SANDY TILL NO WATER F� NO MOTTLING NO LEDGE DESIGN DATA PERCOLATION RATE = 15 MINUTES/INCH 4 BEDROOM RESIDENCE REQUIRES 660 SF OF LEACHING AREA PROVIDE 3 - 75' (48" WIDE) TRENCHES EFFECTIVE LEACHING AREA = 675 SF PROVIDE A 1250 GALLON 2 -COMPARTMENT TANK M.L.S.S. REQUIRED = 20X2.OX1.5=60 LF M.L.S.S. PROVIDED = 75 LF U'�IC CONSTRUCTION ENTRANCE NOT TO SCALE OF ROAD ti Z 04 O M Ln 0 LN am, ' Z N t- O W LL_ = O 00 N 00 z D 0 Of 0 CO CO (0 CO C' J � N PLAN t OF ROAD 8' HIGHER THAN GUTTER 0 Z _ OR R.O.W. LINE 6' HIGHER THAN GUTTER GUTTER VARIES 10' 10' CREST CURI E IN DRIB NOTE: ABOVE DETAILS SHALL BE USED WHERE A STORM DRAINAGE SYSTEM IN THE ROAD EXIST RESIDENTIAL DRIVEWAY DETAILS NOT TO SCALE FINISHED GRADE k ELECTRICAL, TELEPHONE AND CABLE TELEVISION SERVICE BURIED CABLE TRENCH CROSS SECTION NOT TO SCALE FILTER FABRIC ! ANGLE 10' UP SLOPE FOR STABILITY AND POST I. SELF CLEANING 7.7 COMPACTED BACKFILL_ SILT FENCE NOT TO SCALE 2x2 5/8 16 GA. 4" PVC ELBOW WIRE MESH 1-1/2" 1-1/4" n F I QD N 1_ O - 00 d 2" 2" STANDARD D -BOX WITH ELBOW NOT 'TO SCALE 10'- 6" �- KNOCKOUT INLET AND i OUTLET OPENINGS 71o I t N Li.! pp = f. - M CAST CONCRETE COVERS-/ PLAN CAPACITIES A B C 1250 GAL 61" 51" 48" 1500 GAL 69" 59" 56" PROVIDE RISERS TO WITHIN 4 x 4 12.6/'12.6 6 x 6 6/6 GA. 12" OF FINISHED GRADE GA. WIRE MESH WIRE MESH AT INLET AND OUTLET I 24" PROVIDE OUTLET FILTER /-POLYLOK PL -122 INLET 3 VENT ----- LIQUID LIQUID LEVEL CONTINUOUS HOT p 4" OUTLET ¢ ASPHALT SEAL BAFFLE M 4" SCHED. #40 '.NLET BAFFLE g 0' GAS A. DEFLECTOR CROSS SECTION 1250/ 1500 GALLON 2 COMPARTMENT SEPTIC TANK NOT TO SCALE OUTLET U V) ti Z 04 O M Ln C,400 ' Z N t- O W LL_ = O 00 N 00 Q Q Q Of 0 CO CO (0 CO 0v ry H- o w H V- 0 -I Z LLJ U►� ° U_ U W Z 0 IL Z J = J � < U ��// F- ry 0 N Z M C) 0 0 a Q0 o � E � �8 Ov Z 4 l U 42 t� 3 .� rti �' w of a � N bA W TJ4 bA F� U V) t-� O M Ln Z rn Z N t- O W LL_ = O < Q Q Q Of 0 Z 0 0v ry H- o w 0 V- CK -I Z LLJ wLd Ld lY U W Z 0 W W cr Z J = J � < U ��// F- ry 0 N Z M 0 0 t� Z 0 Z a Q U rn w 0 0 uy w cn Li w o Otf Li o I N ME Q t-� M Ln o� rn N hq 0 O d O N t- O W LL_ = O O � O z LIJ � o J w LL_ 0 o Iz O (am) o cn Q Li 0 bi Lu fl� = O 1 DATE: 12/14/2004 SCALE: AS NOTED SHEET 2 OF 2