HomeMy WebLinkAboutPlan Set - Reduced24'±
20'
246
248250
250
248
246
244
242240 23
8236234 234236238
240
242
252252 252252
250250248
246244
246244242240
238236234 232
230
228
220
222
224
226228
2
18
2
1
6
21
2
210
210
220
220218216
228
226
224
222
220
FLOOD ZONE AE
(FROM FIRM PANEL 09011C0334G 7/18/2011)
REGULATORY FLOODWAY
UPLAND REVIEW AREA
TP 1
TP 2
TP 8
TP 7
TP 3
TP 6
TP 4
TP 9
24'±
307 (HG D)
URBAN LAND
34B (HG A)
MERRIMAC FINE SANDY LOAM
TEST PIT DATA
TEST PITS EXCAVATED BY P&H CONSTRUCTIONAS WITNESSED BY CLA ENGINEERS (D. Hayward & B. Russo)07/18/2024.
TP-1Total Depth = 50"0 - 15" Topsoil: Very dark brown, organic loam15" - 46" Subsoil: Light gray brown loamy sand46" - 50" Brown sand and gravelGroundwater @ 39" (Elev.=230.3)No ledgeMottles @ 30" (Elev.=231.0)
TP-2Total Depth = 87"0 - 35" Wood chips35" - 45" Topsoil:45" - 73" Subsoil: Light brown-gray-green silt73" - 83" Yellow brown fine sandy loam83" - 87" Brown sand and gravel with pebblesand cobbles with trace siltGroundwater at 76" (Elev.=230.9)No ledgeNo Mottles
TP-3 (Sample taken from 25" - 73")Total Depth = 73"
0" to 7" Topsoil: Brown fine sandy loam7" to 25" Subsoil: Yellow brown fine sandy loam with cobbles and stones25" to 73" Light brown, medium to coarse sand with gravel, cobbles and stones.Firm in place.No GroundwaterNo mottlesNo Ledge
TP-4Total Depth = 51"0" to 13" Topsoil: Dark brown silty loam13" to 26" Subsoil: Light brown silty loam26" to 35" Dark yellow brown sand and gravel with trace silt35" to 51" Yellow brown coarse sand and gravelNo GroundwaterNo LedgeMottles @ 22" (Elev. 235.3)
TP-5 - Not performed
TP-6 (Sample taken from 8" - 22")Total Depth = 66" (Firm at bottom)0"- 8" Topsoil: Brown silty loam
8" - 22" Subsoil: Yellow brown fine sandy loam with gravel22" - 42" Yellow brown coarse sand and gravel with cobblesFirm in place. Manganese staining.42" to 66" Light brown medium sand and gravel and stones.Groundwater @ 63" (Elev.=230.57)No ledgeMottles @ 33" (Elev.=233.07)
TP-7Total Depth = 85"0 "- 9" Topsoil: Dark brown sandy loam9" - 21" Subsoil: Brown fine sandy loam21" - 85" Light brown sand and gravel with cobbles and stones(46" Manganese staining - Dense)No GroundwaterNo ledgeNo Mottles
TP-8 (Sample taken at 46" - 60")Total Depth = 86"0 "- 16" Topsoil: Fill. Dark brown, light brown loamy sand16" - 26" Original topsoil: Dark brown silty loam26" - 46" Yellow brown sandy loam with cobbles and stones46" - 60" Strong brown, light brown very fine sand60" - 86" Gray, light brown sand and gravel with cobbles and stoneNo GroundwaterNo ledgeMottles at 36" (Elev.=235.17)
TP-9 (Sample taken from 16" to 45")Total Depth = 62"0 "- 16" Topsoil: Very dark brown, fine sandy loam16" - 45" Subsoil: Yellow brown fine sandy loam with cobbles and stones45" - 62" Gray brown coarse sand and gravel with cobbles
Groundwater at 45" (Elev.=229.4)No ledgeMottles at 28" (Elev.=230.8)
NRCS SOIL BOUNDARY
SOIL SYMBOL (HYDROLOGICAL GROUP)
SOIL DESCRIPTION
LEGEND
UPLAND REVIEW AREA
30'
15
15
31
R =5'R=
4
0'
30'
30'
24'±
240
238
242
244
238
236
23
4
2
3
2
2
3
0
2
2
8
22
6
240
242
242
236
234
236234238240238
236
DD
PROPOSED DEVELOPMENT
PROVIDE NEW BITUMINOUS
CONCRETE PAVEMENT SECTION.(TYP. SHADED AREA)
PROVIDE TOPSOIL & SEED
OVER DISTURBED AREAS(TYP.)
PROVIDE 12' x 60' PAINTED
TRAILER PARKING SPACES
PROVIDE BIT. CONC. CURB(DRIVEWAY CURBRETURNS ONLY)
GRASS LINED SWALE 1A
(SEE DETAIL)STORMWATERBASIN #1
STORMWATER BASIN #2
STOP SIGN
AREA RESERVED FORSNOW STORAGE(4 SPACES)
PROVIDE BIT. CONC. CURB
LIMIT OF GRADING
(TYP.)
MATCH EXISTINGPAVEMENT
REMOVE EXISTINGBUILDING AND WELL
GRASS LINED SWALE 2
(SEE DETAIL)
MATCH EXISTINGPAVEMENT
STOP BAR
ALL DISTURBED AREAS TO BE TREATED WITH
6" OF LOAM AND SEEDED WITH NEW
ENGLAND ROADSIDE MATRIX MIX
(SEE E&S PLAN FOR DETAILS)
BASIN BOTTOM TO BE 6" OF LOAM AND SEEDEDWITH NEW ENGLAND EROSIONCONTROL/RESTORATION MIX FOR MOIST SITES
(SEE E&S PLAN FOR DETAILS)
STONE FILLEDTRENCH
(SEE DETAIL)
LEGEND
FLOOD ZONE AE
(FROM FIRM PANEL 09011C0334G 7/18/2011)
REGULATORY FLOODWAY
INSTALL 40' GUARDRAILCONNECT TO EXISTING GUARDRAIL
GRASS LINED SWALE 1B
(SEE DETAIL)
GRASS LINED SWALE 1C
(SEE DETAIL)
REINSTATE ROADWAY PERTOWN OF MONTVILLE
STANDARD DETAILS
UPLAND REVIEW AREA
R =5'R=
4
0'
240
238
242
244
238
236
23
4
2
3
2
2
3
0
2
2
8
22
6
240
242
242
236
234
236234238240228
220222
226 224
238
236
DD
CB 'TYPE C WITH HOOD
TF=247.2±
INV IN MATCH EXIST (APPROX. 242.2)INV OUT=(30" NE)=239.00
5' DMH
TF=238.5±
INV IN=(30" SW)=234.00INV OUT=(36" NE)=233.01
5' DMHTF=235.0±INV IN=(36" SW)=230.00
INV OUT=(36" E)=230.00
234
232
234232 232 234
234234
246
244
230232
236 236
3.0:1 3.0:13.0:1
3.0:1OUTLET
INV (36" )=229.8
SFSFSFSF
SF SFSFSF SF
3.0:162'
24'±
SEDIMENT FOREBAY 2
BOTT. ELEV. = 231.0
SEDIMENT FOREBAY 1BBOTT. ELEV. = 231.0
SEDIMENT FOREBAY 1A
BOTT. ELEV. = 231.0
8' WIDE LEVEL SPREADER OUTLET
ELEV. = 234.0
8' WIDE LEVEL SPREADER OUTLETELEV. = 234.0
STORMWATER BASIN #1
BOTT. ELEV. = 231.0
STORMWATER BASIN #2
BOTT. ELEV. = 231.0
4' WIDE EARTHEN BERM
TOP ELEV. = 234.0
4' WIDE EARTHEN BERM
TOP ELEV. = 234.0
4' WIDE EARTHEN BERMTOP ELEV. = 234.0
166' - 30" CORRUGATED HDPE PIPE
S=2.9%
173' - 36" CORRUGATED HDPE PIPES=1.7%
46' - 36" CORRUGATED HDPE PIPES=0.5%
PROPOSED TREE LINE /CLEARING LIMITS TOMIMIC LIMIT OFDISTURBANCE
(TYP.)
GRASS LINED SWALE
TYP.
(SEE DETAIL)
LIMIT OF GRADING
(TYP.)
GRASS LINED SWALETYP.(SEE DETAIL)
GRADE BREAK
DISPOSE EXISTING
CB AND PIPE
DISPOSE EXISTING
CB AND PIPE
'STANDARD' SIZE RIPRAP APRON
(SEE DETAIL FOR DIMENSIONS)
LEGEND
FLOOD ZONE AE
(FROM FIRM PANEL 09011C0334G 7/18/2011)
REGULATORY FLOODWAY
UPLAND REVIEW AREA
24'±DD
CB 'TYPE CTF=247.2±INV OUT=(30" NE)=239.00
5' DMH
TF=238.5±
INV IN=(30" SW)=234.00
INV OUT=(36" NE)=233.01
5' DMH
TF=235.0±
INV IN=(36" SW)=230.00
INV OUT=(36" E)=230.00
46' - 36" CORRUGATED HDPE PIPE
S=0.5%
OUTLET36" HDPE FESELEV. =229.75
173' - 36" CORRUGATED HDPE PIPES=1.7%
166' - 30" CORRUGATED HDPE PIPE
S=2.9%238236240244246232
SFSFSFSFSF SF
232235234
232 234
235
236SFSFSFSFSF
SF SFSFSF SFSF
SFSF
SF
SF
SF
SF
SF
SF SF
SF
TEMPORARY VEGETATIVE COVER
SUGGESTED SITE PREPARATION CONSTRUCTION SEQUENCE
SEDIMENT TRAP #1
(BOTT. ELEV. =232.0)
TEMPORARY SEDIMENT TRAP NARRATIVE
LEGEND
APPROXIMATE WATERSHED SEDIMENT TRAP 1
APPROXIMATE WATERSHED SEDIMENT TRAP 2
SEDIMENT TRAP #1
(BOTT. ELEV. =232.0)
GENERAL NOTES:
1. PRIOR TO CONSTRUCTION, THE PROPOSED LIMITS OF DISTURBANCE SHALL BE STAKED BY A
LICENSED LAND SURVEYOR.
2. INLAND WETLAND BOUNDARIES SHALL BE RE-STAKED IN THE FIELD BY A LICENSED LAND
SURVEYOR OR CERTIFIED SOIL SCIENTIST PRIOR TO INSTALLATION OF EROSION ANDSEDIMENTATION CONTROL MEASURES.3. AFTER STABILIZATION OF THE SLOPE BETWEEN BASIN #1 AND ROCKLAND POND, THEFOLLOWING SHRUBS SHALL BE PLANTED ALTERNATELY ALONG THE EDGE OF DISTURBANCE
AT AN INTERVAL OF 10-FEET ON CENTER:10 HIGHBUSH BLUEBERRY, 10 NORTHERN
ARROWWOOD VIBURNUM, 10 RED CHOKEBERRY
INVASIVE PLANT CONTROL
1. AN ECOLOGIST/WETLANDS PROFESSIONAL WILL FLAG WOODY INVASIVES TO BE REMOVED IN THEVICINITY OF BASIN #1 (I.E., BETWEEN THE TOP OF BERM AND ROCKLAND POND) AND WEEDYSPECIES TO BE SPRAYED AT THE TIME OF PLAN IMPLEMENTATION, AND PREFERABLY JUST PRIOR
TO ANY EARTHWORK.
2. TARGETED, RATHER THAN BROADCAST HERBICIDE APPLICATION METHODS, SHALL BE USED. FORSPRING TREATMENT, CUT EARLY IN GROWING SEASON (LATE APRIL TO MID MAY) AND TREATSMALL RESPROUTS IN EARLY SUMMER USING A LOW VOLUME SPRAYER. IN EARLY FALL USE THE
“CUT-AND-PAINT METHOD,” APPLYING HERBICIDE TO A RECENTLY CUT STEM (WITHIN 10 MINUTES)
ON BROADLEAF INVASIVES. USE A SELECTIVE HERBICIDE LIKE TRICLOPYR (FOUND INBRUSH-B-GON, GARLON 3A OR 4A, AND OTHER PRODUCTS), RATHER THAN BROAD-SPECTRUMGLYPHOSATE, TO MINIMIZE IMPACTS ON NON-TARGET PLANTS AND SOIL FAUNA. SEE NOTES ON
INVASIVE CONTROL.
3. INVASIVE PLANT CONTROL WITHIN THE AREAS OF PLANTINGS BETWEEN BASIN #1 AND THE PONDSHALL TAKE PLACE FOR TWO (2) YEARS FOLLOWING THE YEAR OF PLAN IMPLEMENTATION (I.E.,YEARS 1 AND 2), FOLLOWING THE PROCEDURES PROMULGATED BY THE CT DEEP'S CONNECTICUT
INVASIVE PLANT WORKING GROUP (CIPWG), AND/OR THE NATURE CONSERVANCY.
4. THE ECOLOGIST/WETLANDS PROFESSIONAL WILL PREPARE A ANNUAL REPORT AND PROVIDE ITTO THE COMMISSION BY NOVEMBER 30 OF EACH YEAR.
UPLAND REVIEW AREA
STORMWATER MANAGEMENT & POLLUTION PREVENTION PLAN
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REQUIREDAS