Conservation Commission Agenda (linked)

DRAFT
DRAFT DRAFT DRAFT
TOWN OF WATERFORD
Inland Wetlands & Watercourses Permit #C-24-05
430 Mohegan Avenue Parkway & 23B Old Norwich Road
24 Unit Residential Development
The Waterford Conservation Commission, in their capacity as the Town’s Inland Wetland
Agency, hereby authorizes the applicant to conduct regulated activities in designated areas
located at 430 Mohegan Avenue Parkway & 23B Old Norwich Road, Waterford, CT, which are
subject to jurisdiction in accordance with CT General Statutes, Section 22a-36 through 22a-45,
inclusive, as amended, and the Waterford Inland Wetlands and Watercourses regulations.
This permit is a grant of approval to conduct the following regulated activities:
e Clearing, excavation and grading associated with construction of a 24 unit residential
development served by a private driveway, municipal water and sewer, and a stormwater
treatment / detention system upgradient of inland wetlands and watercourses;
e Fill and grading within 7,000+/- square ft. of upland review area for the construction of a
portion of two stormwater treatment basin embankments and a graded outlet channel.
e Discharge of treated stormwater run-off to inland wetlands and watercourses.
These regulated activities are associated with the proposed construction of a 24 unit residential
development located at 430 Mohegan Avenue Parkway & 23B Old Norwich Road, Waterford,
Connecticut. The proposed activities are depicted on site plans entitled; “Roberts Village Drive,
CGS 8-30g Affordable Housing, Site Development Plans For Conservation Commission
Review” prepared for 1721, LLC, 430 Mohegan Avenue Parkway & 23B Old Norwich Road,
Tax Map 76 Lots 10164 & 5600, Waterford, Connecticut” sheets 1 — 13, revised through
7/23/2024, prepared by Indigo Land Design, LLC.
The Conservation Commission authorizes the regulated activity with the following conditions of
approval to minimize impacts associated with the proposed regulated activity and protect the
inland wetlands and watercourses on this site:
SPECIAL CONDITIONS:
1. Revise plan sheets 8 of 14 and 14 of 14, revision date 7/31/2024, shall be incorporated into
the final plan set for approval.
2. The authorized limit of permanent clearing and disturbance to the north and west of the on-
site wetland shall be identified as the wetland non-encroachment boundary. No activity,
including but not limited to clearing, grading, filling or removal of vegetation shall be

Waterford Conservation Commission
Inland Wetland Permit #C-24-05
430 Mohegan Avenue Parkway & 23B Old Norwich Road
Page 2 of 4
conducted within the non-encroachment area without specific authorization from the
Conservation Commission. The purpose of this vegetated non-encroachnient area is to
protect inland wetland resources from direct and indirect impacts associated with adjacent
land development. :
3. The wetland non-encroachment boundary shall be marked in the field prior to the start of site
clearing and approved by the Commission’s agent. Following construction, the non-
encroachment boundary shall be permanently marked at 50 ft. intervals with identification
markers provided by the Conservation Commission affixed to trees or 4x4 wooden posts.
4. At all times during site construction, temporary diversion swales and temporary sediment
traps shall be maintained to collect and settle site construction run-off and to prevent
sediment discharge to the receiving wetlands and watercourse resources.
5. Two groundwater monitoring standpipes shall be installed in the detention basins at the onset
of construction to a minimum depth of two ft. below the completed depth of the basin. Depth
of surface ponding and seasonal high groundwater shall be monitored on a monthly basis for
the duration of site construction. A final wet basin planting plan shall be prepared by a
wetland scientist based on the collected basin hydrology data and submitted to the
Commission’s agent for approval prior to planting the stormwater basins.
6. The stormwater treatment basins shall be inspected by a CT licensed engineer during
construction to verify consistency with the approved plans and specifications. An as-built
survey of the stormwater system components shall be submitted to the Commission’s agent
with written verification from a CT licensed engineer that the system was constructed in
accordance with the approved design plans. This submittal shall be completed prior to
release of any bond amount.
7. Post construction monitoring of the stormwater basin vegetation and soil stabilization shall
be conducted by a wetland scientist or other qualified professional for a period of two (2)
years following completion of the stormwater basins to document vegetation
establishment/success and functioning of the stormwater basins. Monitoring shall be
conducted 2 times per year during the early and latter part of the growing season and include,
vegetation establishment, depth of ponding and draw-down interval, slope and substrate
stabilization, basin plantings survival, and inspection of soil stabilization downgradient of the
basin outlets. Invasive plant species shall be removed from the basins. Total herbaceous
coverage of the basin areas shall equal or exceed 80% at the end of the second monitoring
year. Areas of erosion shall be repaired and re-planted under supervision of the
Commission’s agent.
8. A stormwater basin monitoring report is required to be submitted to the Conservation
Commission’s agent by October 30th of each monitoring year. The Commission may require
corrective actions to maintain or repair the stormwater basins.
9. Acash bond or letter of credit shall be required for the cost of construction of the stormwater
treatment basins, monitoring and post-construction monitoring and reporting in accordance
with the approved plans and conditions of permit approval. A bond estimate shall be

Waterford Conservation Commission
Inland Wetland Permit #C-24-05
430 Mohegan Avenue Parkway & 23B Old Norwich Road
Page
10.
3 0f 4
prepared by the project engineer and submitted to the Waterford Planning Department for
review and acceptance. The bond is required prior to the start of construction and shall be
released upon request, in whole or in part, only by approval of the Waterford Conservation
Commission or its designated agent following receipt of as-built verification of construction
and monitoring reports of basin stabilization and function.
An operation and maintenance plan for the stormwater system components shall be prepared
by the design engineer and submitted to the Commission’s agent for approval prior to the
issuance of a certificate of occupancy. The plan shall outline frequency and type of
inspection and maintenance for each component of the system including the catch basins,
vegetated swales, basin forebays, wetland detention basins, and outlet control structures. An
inspection and maintenance checklist shall be implemented and maintained by the
homeowners association to insure proper maintenance and operation of the stormwater
control facilities.
STANDARD CONDITIONS:
1.
The Conservation Commission’s agent shall be notified at least 48 hours prior to
commencement of any regulated activity.
Final stabilization of disturbed soil areas, including all temporary and permanent soil
disturbances, shall be stabilized with the application of loam, seed and appropriate erosion
control measures.
At all times during site work and until soil areas are stabilized, the applicant shall install
and maintain erosion and sediment control measures such as fabric filter fence, staked hay
bales or other measures deemed necessary by the Commission’s agent to prevent erosion
and sedimentation impacts to wetlands and watercourses.
Erosion control and soil stabilization measures shall comply with the approved plans and
the guidelines as established in the Connecticut Guidelines for Soil Erosion and Sediment
Control, 2002, CTDEEP Bulletin 34.
Upon direction of the Commission’s agent, erosion and sediment control measures shall be
removed by the applicant following stabilization of the site.
All work and all regulated activities conducted pursuant to this authorization shall be consistent
with the terms and conditions of this permit. Any structures, excavation, deposition of fill,
obstructions of flow, encroachments or other regulated activities not specifically identified and
authorized herein shall constitute a violation of this permit and may result in permit
modification, suspension or revocation.
In the event that any additional wetland or watercourse regulated activities are required as a
result of other agency permitting to support the proposed activity, the Waterford Conservation
Commission reserves the right to reconsider the proposed regulated activity and may require
modifications to minimize the impact to wetland resources.

Waterford Conservation Commission
Inland Wetland Permit #C-24-05
430 Mohegan Avenue Parkway & 23B Old Norwich Road
Page 4 of 4
In evaluating this application, the Commission has relied on information provided by the
applicant. If such information subsequently proves to be false, incomplete and/or inaccurate, this
permit may be modified, suspended or revoked.
This permit shall be valid for a period of 5 years. Permit extensions may be authorized in
accordance with CT General Statutes § 22a-36 through 22a-45 inclusive. If the regulated
activity is not completed within this time frame, the permit may be held to be invalid by the
Conservation Commission or the applicant may be required to petition the Commission for an
extension or re-issuance of the permit. The Commission may require the applicant to furnish
additional information at that time.
The Conservation Commission renders this Summary Ruling in accordance with the Waterford
Inland Wetlands and Watercourses Regulations based on the following considerations:
A. The activity does not involve direct impacts to inland wetlands or watercourses. The
activity will not diminish the capacity of the on-site wetlands and watercourses to support
fish and wildlife, supply and protect ground and surface waters, control erosion,
assimilate pollutants or to facilitate drainage.
B. Short-term construction impacts are minimized with a phased construction sequence and
erosion and sediment control plan to reduce the potential for adverse sediment impacts.
C. Potential long-term impacts to on-site and off-site wetland resources are minimized by
maintenance of wetland hydrology, control of discharge velocities, implementation of
stormwater treatment systems, and maintenance of a vegetated wetland buffer designated
as a wetland non-encroachment area.
D. Strict adherence to the terms and conditions imposed with this permit will protect the
quality of wetlands and surface waters on this property.
This permit will be strictly enforced. If the Conservation Commission finds that the applicant
has not complied with the permit conditions or has exceeded the scope of this permit as set forth
herein, or, if the intended use of the general site is not as represented by the application or the
plan of record, the Commission may suspend or revoke this permit, direct the Environmental
Officer to issue a cease and desist order, require the applicant to modify, extend or revise the site
work, or require the applicant to restore the area to its original condition.
Date Issued: August 8, 2024
Issued By: DRAFT
Chairman, Richard F. Muckle ©
Waterford Conservation Commission
Effective Date:

STORMWATER MANAGEMENT QASIM FLOOR MIX ~ SEED MIXTURE SPECIFICATION
25% REDTOP PANICGRASS, PA ECOTYPE (PANICUM RIGIOULUM (P. STIPITATUM), PA ECOTYPE)
16% VIRGINIA MLDRYE, PA ECOTYPE (ELYMUS VIRGINICUS, PA ECOTYPE)
18% ALKALIGRASS, ‘FULTS’ (PUCCINELUIA OISTANS, ‘FULTS')
15% FOWL BLUEGRASS (POA PALUSTRIS)
10K CREEPING BENTORASS (AGROSTIS. STOLONIFERA)
10% TICKLEGRASS (ROUGH GENTGRASS), PA ECOTYPE (AGROSTIS SCABRA, PA ECOTYPE)
'S% SOFT RUSH (JUNCUS EFFUSUS)
2K AUTUMN BENTGRASS, PA ECOTYPE (AGROSTIS PERENNANS, PA ECOTYPE)
1% PATH RUSH, PA ECOTYPE (UNCUS TENUIS, PA ECOTYPE)
‘STORMWATER MANAGEMENT BASIN CONSTRUCTION NOTES
Pn
AFTER ROUGH GRADING AND SHAPING, THE AREA OF THE BASNS SHALL BE MARKED OFF AY APPROPRI x
Prevent Ie MOVEMENT OF CONSTRUCTION VENICLES OVER AND THE POSSIGLE OVER COMPACMION OF THE ORDERING
NATURAL SOLS.
ASS SHALL NEVER BE USED FOR SEDMENT CONTROL OURNG AN ACTIVE CONSTRUCTION PERIOD,
URC COUSTRUCTON, SEDIMENT. SHALL OE PREVENTED FROM ENTERWO THE AREAS OF THE BASHS. THE CONTRACTOR
ISURE_TH ‘AREAS ORAIING TO THE BASINS ARE STABILIZED IN A TIMELY MANNER AND MAINTAINED
SVER THE ENTIRE AREA DRAMING TO THE BASS.
|. THE DESIGN ENGINEER SHALL MONITOR THE CONSTRUCTION OF THE WATER QUAUITY BASINS, WILL PERFORM ALL FOLLOW
UP INSPECTIONS, ASSESSMENTS ANO REPORTS AND REMEDIATION WORK (\F NECESSARY) AND SHALL PROMOE
CERTIFICATION THAT THE SYSTEM WAS INSTALLED IN SUBSTANTIAL CONFORMANCE WITH THE APPROVED PLANS.
ALL DISTURBED AREAS SHALL, BE FANE GRADED, RAKED, SEEDED AND MULCHED IN A TMELY MANNER, BOTTOM OF THE
BASINS SHALL BE St ‘ACCORDANCE WITH "ERNST SEED MIXTURE SCHEDULE” ON THIS SHEET.
SEEDING SHALL BE QUICKLY ESTASUSHED. ONIN VEGETATIVE COVERAGE, GF SOK SHAN “GE TARGETED "AN
|. THE FOREBAYS SHALL CONTAIN SO% OF THE WOV FOR STORMWATER MANAGEMENT BASIN #18 AND 24% OF THE WOY
FOR STORMWATER MANAGEMENT BASIN JIC. THE FOREBAYS SHALL BE FORMED BY A MODINED RIPRAP GERM. THE
IPRA GERM SHALL HAVE A HEKHT OF 1.0" FOR STORMMATER WALACEMENT BASWW FYB AND A HEIGHT OF 1.8 FOR
ATER MANAGEMENT BASIN. B1C, EACH FOREBAY SHALL ALSO HAVE A FIXED VERTICAL SEDIMENT DEPTH MARKER
red ‘TO MEASURE SEDIMENT DEPOSITION.
12" BIOFILTRATION SOL MIX SHALL BE INSTALLED ALONG THE ENTIRE BOTTOM OF STORMWATER MANAGEMENT BASIN
Hib uo NG. WE lor TRATION MIX SHALL CONSIST OF GONEDE SAND, B0S30R TOPSOL. AND’ 20-SOR HEED< THEE
JASIN FLOOR PLANTING SCHEDULE 1S PROVIDED BELOW FOR STORMWATER MANAGEMENT BASINS IB _AND #IC. PRIOR
TO NSTALLATON, HE DASH SHALL BE MONITORED DURING CONSTRUCTION TO DETERMINE THE EXTENT AND DEPTH OF
PONOING WITHIN "THE 8, THE PLANTING
{EDULE SHALL BE ADJUSTED ACCORDINGLY PER THE PROJECT SOIL
SCENTIST. THe FNAL PLANING. SCHEDULE SMALL BE. REWENED ANO'APPROVED BY OF THE. TOWN ENVIROMENTAL
PLANNER PRIOR TO INSTALLING.
CLA Engineers, Inc.
Cla * Structure! * Survey
i SATMAINSTREET © ~——RORWICH,CTOG3EO «+ ——(60)B86-1968 + (850) BBE-O1S FAX
July 1, 2024
Planting Schedule - Roberts Ct (Indigo)
Scientific name Quantity (IB/IC)_ Spacing WE Status
Carer stricta 300(78/222) | 2fton center_| OBL
Juncus effusus 300 (787222) | 2ft on cener_| OBL
Pontederia corduta 300 (78/222) 2fion center_| OBL
Dulichium arundinaceum | 300 (78/222) | 2ft on center_| OBL.
tris versicolor 300 (78/222) [2ft on center_| OBL
Sparganium americanum | 300 (78/222) 2fton center_| OBL
All plantings to be randomly distributed at basin bottom (127' elevation for basin 1B, 124° for
basin 1C)
Mathematical celculations:
Basin 1C approx., 4837 sqft: 1209 plants with 2ft spacing
Basin 1B approx. 1711 sqft: 428 plants with 2A spacing
Number of total plants required based on 2ft spacing approx. 1637
Total number of each species assuming equal amounts of all plants approx. 272 (6 Mints each)
Seed mix: New Eneland Erosion Contro/Restorsuon Mix For Detention Basins and Moist Sites
Use 5 pounds at 1250 sqftib around edges of basin 1B and 1C- do not add to basin bottom
Contact: 413-548-8000
= Description from manufacturer (New England Wetland Plants): The New England
Erosion Contro/Restoration Mix for Detention Basins and Moist Sites contains a
selection of native grasses and wildflowers designed to colonize generally moist, recently
disturbed sites where quick growth of vegetation is desired to stabilize the soil surface, It
isan inte seed mix for: y sensitive that require stabilization
as well as long-term establishment of native vegetation.
+ This mix is particularly appropriate for detention basins thal do not hold standing water,
Many of the plants in this mix can tolerate infrequent inundation, but not constant
flooding. The mix may be applied by hand, by.the mechanical spreader, or by hydro-
seeder, After sowing, lightly rake, roll ur cullipuck to insure goud seed to soil cuntuct,
Best results are oblained with a Spring or late Summer seeding. Late Fall and Winter
dormant seeding requires an increase in the application rate, A light mulching of clean,
‘weed-free straw is recommended.
M, Ahem, Soil Scientist I
CLA Engineers, Norwich, CT
STORMWATER MANAGEMENT
BASIN PLATINGS & FLOOR
IK (SEE NOTES #4 & #3)
a
BOTTOM OF BASU PACTED,
Sey ae Raitt SUBORADE
Y, = 1274
MIX (SEE HOTES #4 & #5)
BOTTOM OF BASIN
ELEVA
RIPRAP MIZ.02
‘COMPACTED NON-ORGANIC:
EARTH SUBGRADE
TOP OF BERM ELEVATIONS: Gy
| TOP OF SPULMAY ELEVATIONS:
12° THICK CTDOT MODIFIED
RIPRAP 412.02
GEOTEXTLE FABRIC
coy pao
moras
iin com ‘
aa sores ; ol
|
1 Ste A : i
alge? [ara
cx pn - °
‘TRASH RACK ! ii 12° CORRUGATED
r 1 rg 1 bel ‘OUTLET
‘3° DIAMETER '
ORIFICE \ U !
ee NOTE 74) OH] NLL4 1__gouner pire mv.
Eel | eee
|
somo o
jp---------}4/---- 4 -e@structure
somo 34g BT soe
ELEY, = 127.08 7
FRONT ! Z
(WEST FACING) | 7
corer
BOTTOM OF f (HON-ORGANIC)
The
an na 2h Oi
ig copuem>
ahs
os Ree sl BF sone mp wT To Esco oF We edn
ESB AL SLND AE RI Me ERAS LGR TS v0
2 GEREB m uasons ww nr sm,
2 APTOS PEP A Se sox so suo me net aso ono De
OPENING (NOT SHOWN FOR CLARITY). THE PIPE SHALL PROJECT 2 TO 3 INCHES INTO THE BASIN ANO
SHALL HAVE A GALVANIZED PYRAMIO TRASH RACK OVER THE PIPE.
COMPACTED SUBCRADE OR
UNO!
STORMWATER
Mit. TOPSOIL (TYP.)
SHELL MATERIAL.
(SAND & GRAVEL)
ISTURBED GROUNO
HEIGHT VARIES
FRACTION PASSING No, 4 SHALL HAVE LESS
THAN 15% PASSING NO, 200 SIEVE
NOTES:
ALL MATERIALS SHALL BE COMPAGTED TO AT LEAST 95% MODIFIED. OPTMUM DENSITY
2. ENTIRE GERM AND SURROUNOING DISTURBED AREAS SHALL
3
4
COMPLETELY” STASIUZED AND
‘SEEDED YWTH EROSION CONTROL /RESTORATION MIX.
IT |S. RECOMMENDED TWAT THE BER
10N
DEMONSTRATE CONFORMANCE TO BERM
TO THE OESIGN ENGINEER.
ANTWSEEP COLLAR SHALL BE INSTALLED,
SE CONSTRUCTED IN THE SUMMER MONTHS IF PossiatE
‘COMPACT IF THEY BECOME
SPECICATION. ALL TEST RESULTS. SHALL BE PROVIOED
‘AROUND OUTLET PIPE AS NECESSARY.
WOT TO SCALE
UOTES.. NOT TO SCALE
1. REFER TO “STORMWATER MANAGEMENT BASIN CONSTRUCTION NOTES” ON THIS SHEET FOR
ADDITIONAL INFORMATION.
2 BOTTOM OF STORMWATER MANAGEMENT BASWW TO BE SEEDED WMH T
BASIN FLOOR MIX’ BY ERNST CONSERVATION SEEDS.
3, SOE SLOPES ANO TOP OF STORMWATER MANAGEMENT BASIN TO BE SEEDED WTH ‘PERMANENT
SEED MIXTURE’ (SEE NOTES ON THIS SHEET) ANO MULCHED, GALVANIZED PYRAMID
4, INSTALL, PLANTINGS ALONG BOTTOM OF BASH PER “PLANTING SCHEDULE FOR STORMWATER TRASH RACK
MAVAGEENT. BASIS 418 & FCT ON THIS SHEET, SEE STOMUWATER MAVAGENENT BASH
5 THE BOTTOM ASIN SHALL BE OVER, EXCAVATED. 12. INCHES. AND A, t2- INCH RECTANGULAR OPENING enecast
BIOPLTRATION SOIL MIX SHALL BE INSTALLED ALONG THE ENTIRE (OF THE STORMWATER (Min, 15.0 S.F.) 7 l-~ concreTe
RGEMENT. BASH. ME BIOPLIMATION. MIX SHALL “CONSIST OF" 20-60x "SAND, "20-20%
TOPSOIL. AND 20-30K WEED-FREE LEAF COMPOST OR EQUIVALENT. THE GIOFLTRATION NIK AND %
UNDERLTING SOILS’ SHALL NOT BE COMPACTED.
1
overriow é 2 2
NOT TO SCALE Top OF ORATE@ 
-APPROXMATE
egy. = 126.008 GRADE UNE
CANT SH HAR | 12" CORRUGATED
4° MIN, TOPSOIL, puce LeveL aPa8* Hore ouner
STORMWATER MANAGEMENT LP eT
BAS PLANTINGS. & FLOOR a OUTLET PIPE Wy.
NIK (SEE NOTES #4 & ELEY, = 124.
’ nee OIAMETER ORIFICE j= 12400
(Gee Hore 44) O-] BOTTOM OF
elev. $126.00 SO sTRUCTURE
eormaroeren BOTTOM OF BASH gy . ELEY. = 120.04
LEY, = 124,00 f
rronr_!
(nest FACING)
ye
}OTTOM OF
SOUS (WON—oRGANIC)
euev = 12008 Eka Suacedoe
£12" CONPACTED
‘GRAVEL BASE
RIPRAP 12.02
‘COMPACTED_NON-ORGANIC
EARTH SUBGRADE
TOP OF BER ELEVATIONS: @y
555] TOP OF SPRLWAY ELEVATIONS:
12" THICK CTDOT MODIFIED
RIPRAP 12.02
CEOTEXTILE FABRIC
NOTES.
1. REFER TO “STORMWATER MANAGEMENT BASIN CONSTRUCTION NOTES” ON THIS SHEET FOR
‘ADDITIONAL INFORMATION.
2 BOTTOM OF STORMWATER MANAGEMENT BASIN TO BE SEEDED WITH "STORMWATER MANAGEMENT
BASIN FLOOR MIX’ BY ERNST CONSERVATION SEEDS.
3. SIOE SLOPES ANO TOP OF STORMWATER MANAGEMENT BASIN TO BE SEEDED WTH ‘PERMANENT
SEED MIKTURE’ (SEE NOTES ON THIS SHEET) ANO MULCHED.
4. INSTALL PLANTINGS ALONG BOTTOM OF ASW PER “PLANTING SCHEDULE FOR STORMWATER
MANAGEMENT BASINS 18 & $C" ON THIS SHEET. SEE STORMWATER MANAGEMENT BAS
CONSTHUCTION NOTE 48.
cf BASIN SHALL BE OVER EXCAVATED 12 INCHES ANO A 12-INCH
Bone maTon Se UK staiL BE WISTALED ALONG THe ENTIRE BOTTOM OF THE Stomuwaren
IAHAGEMENT ASW. THE BIOFILTRATION MIX SHALL CONSIST OF 50~60x SAND, 20-309
Tomson, AND 20-36r WEED-PREE LEAF COMPOST OR EQUIVALENT. THE GIOPLTRATION MK AND
UNOERLVING SOLS SHALL NOT BE COMPACTED.
STORMWATER MANAGEMENT BASIN #1C DETAIL.
NOT TO SCALE
ANT JOINTS IN RISERS SHALL BE MORTARED AND WATERTIGHT TO THE SANSFACTION OF THE ENGINEER.
SHOP ORAWINGS SHALL GE SUBMITTED TO OESICN ENGINEER FOR REVIEW AND APPROVAL PRIOR TO
FABRICATION.
WITH ANO DEPTH DIMENSIONS MAY VARY SUGHTLY.
. THE 3° OUMETER ORIFICE SHALL HAVE A 3" DIAMETER SCH. 40 SOUD PYC PIPE INSERTED INTO THE
QPENG, (NOT SHOWN FOR CLAMTY). THE PIPE SMALL PROJECT 2 TO 3 INCHES WTO THE BASIN AD
SHALL HAVE A GALVANIZED PYRAMIO. TRASH RACK OVER THE PIPE
»:
QUTLET CONTROL
STRUCTURE DETAIL
NOT TO SCALE
ep
EXISTING OR FINISHED
GRADE PER SITE PLAN
INSTALLATION é& EMBEDMENT
PER MANUFACTURER,
“EXCEL SS-2 ALL NATURAL”
BIODEGRADABLE EROSION CONTROL BLANKET
BY WESTERN
THE SWALE SHALL HAVE AN “EXCEL
BLANKET BY, WESTERN GREEN (OR EQUNALENT), THE LNER SHALL BE INSTALLED 1 FT. (Mint)
‘ABOVE THE BOTTOM OF THE SW
THe EROSION CONTROL "OLAIKET SHALL NEET OR_EXCEED “TPE 2.0" FOR FEDERAL HIGHWAY
ADUMISTRATION ROLLED EROSION CONTROL PRODUCTS, INCLUDING SHEAR STR
IALE AND ALL DISTURBED AREAS SHALL BE HEAVILY SEEDED Itt
PERWANENT SEED MBTURE (SEE SHECT
GREEN (SEE NOTE fi & 2)
SS-2 ALL NATURAL” BIODEGRADABLE EROSION CONTROL,
¢ENGTH_ AND. LONGEVITY,
CONFORMANCE WITH THE
3 OF 13) AFTER GRADING IS COMPLETED AND PRIOR TO
THE
THE MAT SHULL BE SECURELY ANcHG
DicHONED ED NTO THe SOIL AT ALL TRWUNG EDGES. THE MAT SHALL
BE _FASTENED TO THE
RECOMMENDED BF THE MANUFACTURER.
‘AN METAL STAPLES, OR AS OTHERWISE
8. THE SHALE SHALL HAVE PERMENENT CHECK OAMS INSTALLED (NO SHOWN) — SEE DETAIL
HoT To SCALE
6° Munim
A
ALTER FABRIC
(iF NECESSARY)
CT, OT NO. 3,
‘STONE (CRUSHED)
SUBGRADE
NOTES:
1, KEY STONE INTO THE BANKS AS SHOWN TO PR
2. ALL STONE CHECK OAMS SHAUL BE
‘SHALL BE REMOVED ONCE
3. STONE CHECK OAMS SHALL BE PLACED AS SHOWN ON THE SITE PLANS AND AT NO LESS THAN 75 FT.
TERVALS. ALONG GRASSED, SHALES #14. JIB AND AIC.
4, ALL STORE CHECK OAMS SHALL BE LEFT IN PLACE PERMANENTLY.
{EVENT FLOW FROM FLANKING THE CHECK DAM.
MAINTAINED OURING CONSTRUCTION. ANY ACCUMULATED SLT OR OEBRIS
THE SITE 1S STABIUZED.
NOT TO SCALE
EXISTING OR FINSHED
GRADE PER SITE PLAN
EXCEL SRo1
EROSION CONTROL
GREEN (SEE
THE SWALE SHALL HAVE AN “EXCEL
BLANKET GY WESTERN. Gi
‘ABOVE THE BOTTOM OF THE SWALE.
THE EROSION CONTROL BLANKET
‘ADMINISTRATION
SHALL
CONTROL. PF
INSTALLATION é& ENBEDWENT.
PER MANUFACTURER
ALL NATURAL” BIODEGRADABLE
BLANKET BY WESTERN.
NOTE #1 & 2)
iT _
oe
ia
=i
a
SR=1_ ALL NATURAL BIOOEG:SRADABLE CONTROL
AEN (OR FQUNALEMT. THE UNER SHALL BE STALLED TFT ull)
MEET OR EXCEED, "TPE 2.0" FOR FEDERAL WchwAY
ROLLED EROSION >RODUCTS, STRENGTH.
SHE SWALE NO ALL DISTUROED AREAS “SHALL BE HEAMLY. SEEDED. IN CONFORMANCE. "WIT THE
PERMANENT SEED MIXTURE (SEE SHEET 3 OF 13) AFTER GRADING IS COMPLETED ANO PRIOR TO
THE INSTALLATION OF THE EROSION, COhMROL BUAKUET.
HALL BE SECURELY ANCHORED INTO THE SOIL AT ALL TRAUNG EDGES. THE MAT SHALL
BE FASTENED TO THE SOI. WITH WOOD STAKES ANO META. STAPLES, OR AS OTHERWISE
RECOMMENOED BY THE MANUFACTURER,
THE SWALE SHALL HAVE PERMENENT CHECK OANS INSTALLED (NO SHOWN) ~ SEE OETAL.
GRASSEO SWALE #18 & #iC WITH EROSION CONTROL BLANKET DETAIL.
‘NOT TO SCALE
INDIGO LAND DESIGN, LLC
‘JOSEPH WREN, P.E.
CT REG. NO. 21030
F
2
é
40 ELM STREET, 2ND FLOOR
‘OLD SAYBROOK, CT 06475
PHONE: (
1: INDIGO-LAND.COM
WEB:
NOT FOR
‘CONSTRUCTION
UNTIL THIS NOTE
IS REMOVED
2]2|2|5
g
Aa
zlsléls
Ella
elelels
lathe
Blulo
e188
@
3 lal
3
RISIRIS
nle[-[sJ
PREPARED FOR 1721, LLC
430 MOHEGAN AVENUE PARKWAY & 23B OLD NORWICH ROAD
CONSTRUCTION DETAILS (STORMWATER AND E&S CONTROL)
TAX MAP 76 LOTS 10164 & 5600
WATERFORD, CONNECTICUT
OATE:
MAY 21, 2024
‘SCALE:
‘AS NOTED
It DRAWN BY:
CO, MA, RG, RM
CHECKED BY:
aw
DWG. NO.
CD-1

Perel
OPERATION AND MAINTENANCE (O&M)
OF STORMWATER SYSTEM
3, SCHEDULE OF INSPECTION AND MAINTENANCE
a Th sem shall have and routine and
and corrective measures performed as outined lath operation and malotenanca plan.
b. At stormwater system components shal be Inspected after any major storm events oF a8 otherwite
specified.
© fon this thet may be used during Complete
2 sepante inspection check for each structural stormwate feature and prepare asi plan or sketch
showing the locations of exch. Ml ryrtem components may not be applicable.
1d._-A copy of the Inspection checilit can alto be found ln Appendis B of the "Connecticut Stormwater
(Quality Manvar’, publuhed Sept. 30,2023 ut revised Mar. 26,2024, or as amended,
2, RESPONSIBLE PARTIES FOR INSPECTIONS AND MAINTENANCE
2. Allaspections, corrective measure by
property Heensed inspectors and contrac selected and fnanced by the property/homeowner’s
ausodation.
3, DOCUMENTATION
‘Anas-bult plan of the stormwater system shal be prapared ba Heansed land surveyor. aha Indude
the loation, elevations and sltes of all stormwater management structures and features.
Upon cormpletin of the stormwater system, the design engineer shall prepara a later of complance
cerdving that Iwas constructed ly subranisl conformance with the approved plans,
. and routine and. measures shall be cy
{Semonstrare compBance with malnuenancaactiides.
4. Acopy ofthe as-built, letter of compliance, and malotenance netvides shall be hapt on fle withthe
ropeny/omeownersasiocaton.
‘eA yentty signed statement shall be submitted by the propery/homeowner's ausecation to the
Waterford Plannlog ndteatiag thatthe facity has been propesty
tnd ts functioning ns designed, pee Section 25.6.14.3.3 ofthe roning regulations.
F
4, CATCH BASINS AND SUMPS
2. Inspect catch Basins and sumps twice per yr, lo late speog afer snout and lalate fal ater leat
{land before the fest snow.
Establish a atch bauln dearing frequency sch thatthe catch basin sumps are never more Uhtn SO%
[RL Clean more frequenty catch basi wth known heavier sediment 3
problem, duding the cach bats with detp sumpt and hooded outlets,
Gang should incu te vemonl ef eden fom etch Bl sump, remonl ef Doxables and
Iyakecarbons rom he wate autice Ine the etch baal and rma of wah and dab rom
Sosiun pannel onesneiny
Source: Adaptea fron tne CF Stormatee Manual dated $/0 7023, lap revivyd 312872028
a
Page ot?
Gach
Foto snes Cntr epson) shou ba repay capoed esta ve oes ee Sopot et
an approved she. Sand und organic master shal be tested fr sulablty W revses.
Handle and éispove of eatch basin and storm drainage system desnings ln accordance with CT DEEP
(udelines and requirements. Refer to CT DEEP “Guidelines for Municlpal Mantgement Practices for
‘SunetSweeplngs & Catch Basin Gangs", as amended.
5, STORMWATER MANAGEMENT BASINS AND OUTLET CONTROL STRUCTURES
|. Perlodicaly maw the pond side slopes during the growing
Inspect aher major storms (Loch or more fert3 month
Inspect outlet contol structures and oft 3 Umes per year nspect sediment forebay twice per year
tnd he ret ehe rem ny, edn Inet and pend emt
nd repairs shoud be mas
mf AALNEoqapeate rr Bub her coumetar apna s oud amore
age to vegetation. Hewry equipment mary be ured for sediment removal and other malatenance
‘ett the equipment rposRioned ovtsde the imi ofthe sytem. Heavy construction equlpment
should not be allowed within the Bie of the rystem for maltenance purposes.
‘Remove trash and organic debris haves) Inthe spring and fal.
[Remove seciment from the seimant forebey whan I nccumultes toa depth of SOX of the height of
‘the forebey berm.
‘Remove xedimant from the permanent pool when the pool volume has become reduce sigicant,
lor hen significant algal growth iso
‘The vegetative cover should be maintained at ASX. If vegetation has damage, the aren should be
‘reestablished In zcordance withthe orginal specications.
son, Malntan side slope vegetation at 6
Inches or Nghe. nsptct and remove ovasive vegetation as necelsary. Mabstalning hither vegetation
along the edge of the pond to deter waterfowd.
Inspect wevand plants and manage/harvest da
oF dying branches are observed. Pant
reinforcement plantings as necessary.
Prune wetiand vegetation on a reguir schedule Ingpect watiind plants and mansge/harvest
dylng plants ax necessary. Plant reinforcement plandngs as necessary.
6. SWALES
1% Inspect ater major storms (1 Inch or more of precipitation) n the Rist 3 months folowing construction.
1 Ieapece twice per yearn tte spcing afer rnowmelt and in ate fal afer laf fal and before the Ast
snowall,
amo tin nd ran eis uo) nth ng on
a feceeds 2 Inches or when
©
deren wes har a storm event,
eich
irasdel Dus core sd watery Mowing sheet be potaroad hes tes ee rook
{ovoid rutting or compaction.
Periodically remove gras clippings to prevent cogring of the surface ofthe swale,
7, LAWN AND LANDSCAPE MANAGEMENT
Sources Adaatee trom tha CT Stormmater asus, dated 9/200 ns estes 372672078
Pages of
‘ellmate and tera
and puitilde application. Choose vagetation that Is best sulted to the local eondltons and require
‘minimal malatenanes.
i the
© Use orpanelavn care methods
‘extent praccable. I ferstier Ito be used, foow best management pracscas.
| Fertile no more thin twice » yeur, once lo Mayne (vol belore spring green up) and once la
‘September. Ute showealease formulations (50% or more water iyoluble nhropen).
1 Feriiee at arate of no move thin % pound of rtrogen per 3000 square feel. Typlcay apply oneal
‘to one-thid (or les) ofthat recommended on the feria bag label and then montor lawn responte
and adjust as needed.
sere msi i A Ma Ra
i ints forest. Do not
tot Spreng lea on epenout utes
8, STREET SWEEPING
Mint ice per yeas tn spring as soon a possible
acthes sch sandand ral
‘Street sweeping shall be handled in accordance wth CT DEEP "Guidelines for Municipal Management
Practices for Street Swreepings & Catch Basin Cleanings", as amended.
9. SNOWMELT. placed a ont,
‘where sand and other debris wil remalaaher snowmelt fr ler removal
b. Snow should not be pushed or dumped Into waterbodles or wevinds stormwater quatty basins,
‘wales, or on top of atch bastas.
© Sow shal
‘Azcurulations from Roxdivnys and Parking Lou”
‘Sourea.2dspu fromthe CT Ssrmmvnter Maan, dace 9/30 2028, av raied 3/2622
PAGEL
CHECKLIST inspector:
TYPE OF BMP:
WEATHER DURING INSPECTION:
LOCATION:
TYPE OF INSPECTION (check ifapplicable):
Storm Bvent(] Complaint Response (Routine 2)
AS 1S BUILT PLANS AVAILABLE: Yes 1] noO
PRECIPITATION AMOUNT IN 24 HR PRIOR TO INSPECTION:
fnlet and within the structure (i
Bow diversion structure applicable)
-Sinvetural damage or erosion
Guidance on what co look for
Accumulated debris’ sediment at the
CONDITION: Satistsetory O) Unsatiseiory O)
‘Appendix B - Suuctural Stormwater BMP Maintenance Inspection Checklist
sediment forebay, pretreatment
vegetated fiter strip, deep sump pump
catch basin il rit seperstoe,proprictary
treatment device
‘Guidance on what so nok far
“Accumulated debrie’ sediment
Structural daeisge or erosion
CONDITION
Suisteion Unnvietory
inGhration trench, infikration
bioretention,
gravel wetland -Overgrown/ dead vegetation
Accumulated debris
nd filter, subsuriace -Damaye (e.g. erosion! eniinal burrowing)
Standing water
Condition of wetland veyetation
sete]
‘Appendix 8 - Structural Stormwater BMP Maintentnce Inspection Checklist
bioretantion, sand fer. roe pe dey
water qualigy sale, 0 dead: and weeds
~ Accumulated debriv/ sediment
Standing water above fikee bed
-Eronow rutting in upgsadient teas
-Crucks or damage to permeable
pavement
CONDITION: __Saushctory OF Unisiséciony
inftration trench, underground infikration “Standing water in the
syatem, dry well bioretention, ree filter, dry
‘ater quality swale, subsurfice gravel welland®
*i¢onderdevin preseat
CONDITION: Satistactory Unsensfactory ]
|
Appendic 8 - Structural Stormwater BMP Maintenance Inspection Checklist
jormawater ponds, stormwater Welland “Debris sediment buiklup
inchding subsurtice gravel wetland, water -Damage (e.g. erosion, cracks, spalling,
quality swales seepage! weeps. failure, anima) burrows)
Unsatisfactory)
Gicsle ornate apnlicable elementish, ‘Guidangs.on what to look for;
‘outlet curb cut openings, reised overtiow “Accumulated debris/ sediment at the
structures or riters, oulflow weirs, outlet outlet and within the stroerure (if
pipew culverts, stone riprap apron, stone applicable)
riprap ailing Basia or plunge pool “Structural damage or erosion
CONDITION: Setistzctory C) Unsarisderory ()
Appendix B - Structural Stormwater BMP Maintenance Inspection Checklist
removal
Structural dainage or ervsion access coud
-Overgrowiv dead vegetation preventing or impeding access by maintenunce pertonne) or
equipment
Access to preireatment and all party of BMP that require routine maintenance or sediment
[[conprion: Satisfetory Unsatisfactory Oh
‘Appendix 8 - Structural Stormwater BMP Malatenance Inspection Checklist
PLAN PREPARED BY:
INDIGO LAND DESIGN, LLC
JOSEPH WREN, P.E.
CT REG. NO. 21090
(860) 388-9343
‘OLD SAYBROOK, CT 06475
PHONE:
WEB: INDIGO-LAND.COM
—
40 ELM STREET, 2ND FLOOR
NOT FOR
‘CONSTRUCTION
UNTIL THIS NOTE
IS REMOVED
Re
RC
BY
‘O&M REVISIONS PER TOWN COMMENTS, MISC.
REVISIONS PER TOWN COMMENTS, MISC.
REVISIONS PER TOWN COMMENTS, NISC.
‘DESCRIPTION
RSs
L rlel-|~
PREPARED FOR 1721, LLC
430 MOHEGAN AVENUE PARKWAY & 23B OLD NORWICH ROAD
TAX MAP 76 LOTS 10164 & 5600
WATERFORD, CONNECTICUT
STORMWATER OPERATION & MAINTENANCE (O&M) PLAN
OATE:
MAY 21, 2024
AS NOTED
DRAWN BY:
(©, MA, RG, RM