Conservation Commission Meeting Agenda (linked)

FIFTEEN ROPE FERRY ROAD
WATERFORD, CT 06385-2886
PHONE: 860-442-0553
www.waterfordct.org
Date: April 19, 2023
To: Waterford Conservation Commission
From: Maureen FitzGerald, Environmental Planner _
Re: 61 & 61A Myrock Avenue: Multi-Unit Residential Complex
Request for Determination of No Regulated Activity
Preliminary Site Plan Comments
Proposed Activity:
The application is for the construction of 6 3-story apartment buildings housing 216 residential
units on a 27.6 acre parcel consisting of 61 & 61A Myrock Avenue. The area of construction
disturbance is approximately 12 acres. (Refer to attached aerial map and site plan sheet).
The project includes 6 buildings served by a 24 ft. wide access drive and 325 parking spaces, 5
detached garage structures, and open space / recreation areas. Access is from Willetts Avenue
via the existing private access drive to Waterford Woods multi-family development. The
completed project will contain 6.46 acres of impervious area and 5.2 acres of open space /
recreation area.
No land disturbance is proposed within the 100 ft. Upland Review Area of on-site wetlands.
The stormwater treatment/detention pond discharges treated stormwater to a plunge pool located
260 feet upslope of the closest wetland boundary.
The applicant is requesting a finding of “no regulated activity” for the proposed development.
Wetland Resources:
A large forested/shrub wetland area is located at the south end of the parcel and extends to the
railroad embankment at the southern boundary of the site. The wetland is approximately 27
acres in size and is associated with the East Brook tributary to Jordan Brook, identified as ES-1
in the Jordan Brook Watershed Management plan. ES-1 is ranked as an average value wetland
in the watershed with functional values of ecological integrity and wildlife habitat. The
watershed wetland summary map and table are attached).
The limit of proposed disturbance is 200 feet or greater from this wetland boundary.
An isolated wetland area occurs at the toe of a fill slope north and upslope of the existing sewer
easement and ES-1. The wetland is fed by groundwater seepage and is defined by old fill slopes.
The closest disturbance to this wetland occurs 115 feet upgradient of the northern boundary.
The Jordan Brook Watershed Management Plan recommends treatment of stormwater run-off to
control pollutant loading and stormwater discharge, support groundwater recharge and maintain

a minimum 50 ft. width vegetated buffer between the wetland boundary and adjacent
development. Base level and secondary stormwater control measures are recommended to
achieve 80 percent removal of total suspended solids from stormwater run-off.
Stormwater Management:
The proposed stormwater management system incorporates vegetated swales and rain gardens to
collect and pre-treat roof run-off prior to discharging into the stormwater treatment pond.
Roadway and parking surface run-off is directed through a sediment forebay to a vegetated sand
filter bed and a wet detention basin. The detention pond has been sized to attenuate peak flow
rates from the development to not exceed existing peak flows for the 2-yr through 100-yr storm
event.
The sediment forebay, sand filter bed and detention pond retain and treat the water quality
volume and water quality flows from the developed site. The calculated groundwater recharge
volume is infiltrated through rain gardens and the sediment forebay and filter bed.
This treatment and infiltration of stormwater run-off is consistent with the recommendations of
the Jordan Brook Watershed Management Plan.
Considerations:
The applicant is requesting a finding of “no regulated activity” for the proposed development as
no disturbance is proposed within the 100 ft. Upland Review Area of the isolated wetland area,
and no disturbance is proposed within 200 feet or greater from the large forested wetland at the
south end of the property.
The proposed site development plans incorporate the recommendations of the Jordan Brook
Watershed Management Plan. It is the opinion of staff that the project, if constructed per the
proposed plan details, will not impact or affect on-site or off-site wetlands and does not involve
regulated inland wetland activities.
The Commission should consider, per Section 6.3 of the Waterford Inland Wetlands &
Watercourse Regulations, if the activity located in upland review areas or any other non-wetland
or non-watercourse area is likely to impact or affect wetlands or watercourses and as such, is a
regulated activity.
attachments (3)

MENT DEVELOPMENT
\
Aerial Survey 2009
Jordan Brook Watershed Wetlands
1"= 400 ft.

Town of Waterford
WETLANDS SUMMARY
WETLAND VALUES
[i] VERY HIGH
Gg HicH
AVERAGE
[my Low
\/ MAJOR ROADWAYS
Fog Plain Road
SCALE: 1 INCH = 4000 FT MYKOYC AV
4000 0 4000 Feet
a Miner Lane
5 FUSS & O'NEILL INC: ensiitvny "us \ Great Neck Road
bade

Fuss & O'Neill Inc,
TABLE 6 (CONTINUED)
INLAND WETLANDS SUMMARY
JORDAN BROOK WATERSHED: MANAGEMENT STUDY
TOWN OF WATERFORD
FEBRUARY 2000.
Mean Mean | Mean | Subjective | inal Improve | Special
Wetland Aven | Conductivity} IVI WvuU Opinion | Wetland | Water Signif.
(acres) | (umhos/em) | (Score) | (Score) | (Score) Value Quality
ast Broolk
EMI 47,3 171 0,43 20,52 1 Low 1
JEM2> 17.8 178 0.39 | 6.85 2 Low I
IEM3 39.9 195 0,71 28.37 3 High P X
IET1 143 a7 0,49 7.07 1 Low I
( ESD 2.5 0.46 | 12,60 3 Average
i 34.9 0,76 26,53 4 Very High x
EPL 0.8 0,33 0,26 1 Low t
EP2 12 80 0,33 0.40 2 Low I
jotes:
Mean FVI represents average score assigned to each of the four functional values,
Mean WVU represents mean FVI multiplitied by the acreage of the wetland,
I= Improve Water Quality
P = Preserve Water Quality
P93/93154/A2/TABLES, WB2