Conservation Commission - Minutes - 08/19/2020

MEETING MINUTES
Conservation Commission
Special Meeting Bf n
August 19, 2020 =
6:30 PM =
Zoom Remote Access Only 3 >
Members Present: Dave Lersch, Tali Maidelis, Richard Muckle and Geneva Renégar
(2 Vacancies) 9
Members Absent: Michael Stankov (notified) : Bs 3
Alternates Present: Wade Thomas (6:33) and Julie Wainscott (1 Vacancy) _
Staff Present: Maureen FitzGerald, Environmental Planner
Katrina Kotfer, Recording Secretary
1. CALL TO ORDER AND APPOINTMENT OF ALTERNATES
R. Muckle called the meeting to order at 6:30 p.m. Julie Wainscott was seated to fill a vacancy.
2. APPROVAL of the August 6, 2020 MEETING MINUTES
Motion: Motion made by T. Maidelis, second by D. Lersch to approve the August 6, 2020
meeting minutes.
Vote: 5-0
W. Thomas joined the meeting at 6:33 p.m. and was seated to fill a vacancy.
3. APPLICATION REVIEW
C-20-12 36 Butlertown Road — Woods Road Stream Crossing — Dennis Harlow, Owner
Motion: Motion made by D. Lersch, second by G. Renegar to approve the draft permit.
Vote: 6-0
C-20-13 51 Shore Road — Vegetation Maintenance in wetland and non-encroachment area —
Brian Vincenti, Applicant & Owner
Motion: Motion made by D. Lersch, second by T. Maidelis to approve the draft permit.
Vote: 6-0
C-20-14 14B & 18 Shore Road — Driveway Construction — David C. Mortimer, Owner &
Applicant, Killingly Engineering Associates, Agent
Norm Thibeault, Killingly Engineering Associates and Dave Reagan were available at the
meeting. N. Thibeault reviewed his responses to staff comments with the Commission. He
explained that the property owner does not have permission to upgrade the currently used
driveway and that he needs to bring underground utilities and municipal water to the house
currently under construction. He reviewed the proposed limits of clearing and wetland
mitigation for the proposed wetland disturbance. He discussed the proposed culvert replacement.
He reviewed the mitigation plantings and seeding. Staff noted comments have been submitted
by the Fire Marshal.
D. Lersch questioned if the driveway would cut off the wetland near flag #’s 10-12 from the
large wetland and if a connecting culvert is needed. N. Thibeault responded the ground is very

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August 19, 2020 — Special Meeting
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flat in that area and there is no evidence of surface flow. He did not feel a culvert was needed but
can evaluate the area during construction. D. Lersch questioned if there would be loss of flood
storage in the wetland due to the proposed driveway. N. Thibeault noted that the functionality of
the wetland will not be compromised and the proposed driveway will be asphalt with a gravel
base with minimal grading due to the flat slope.
Motion: Motion made by D. Lersch, second by T. Maidelis to have staff prepare a draft
permit.
Vote: 6-0
C-20-15 140 Waterford Parkway South — Concrete Products Manufacturing and Outdoor
Storage — Fabcon Precast, Applicant, Mathon Fund I LLC, Owner, Loureiro, Agent
Seamus Moran, PE, Clint Brown, PE and Jeff Prince were available at the meeting. S. Moran
reviewed with the Commission a power point presentation for the proposed concrete products
manufacturing and outdoor storage facility. The site is located on the old Airport property and is
presently served by water and sewer utilities. The development area is 41 acres. S. Moran
reviewed the site layout plan, the lighting and landscaping plan. He discussed the proposed
stormwater management system consisting of 5 infiltration basins and 4 subsurface infiltration
chamber systems. He noted the stormwater system meets the recommendations in the Jordan
Brook Watershed Management plan and the design standards of the Town regulations.
A wetland functions and values assessment was submitted from James Cowen, Certified
Professional Wetland Scientist and endangered species surveys were conducted on the property
in response to information received from the CT DEEP Natural Diversity Database. S. Moran
stated the design had been modified to eliminate disturbance within identified turtle nesting areas
and habitat.
D. Lersch asked if there are any potential impacts from air emissions and dust particulates. J.
Prince noted that the largest potential for impacts would be from heat and fuel, no air emissions
of dust or concrete products will occur from the building.
T. Maidelis asked if any chemicals were going to be used in the production. J. Prince noted that
the concrete additives and curing of material occurs inside the building before the material is
stored outside and that there would be no release of chemicals.
R. Muckle asked what would happen to defective materials. J. Prince, those items would be
transported off site.
W. Thomas asked about the effectiveness of the infiltration chambers in pollutant removal and
requested the design consider adding a separator unit off the paved surface area to capture and
isolate any spilled or released fuels. S. Moran noted they are one component of a treatment train
including pretreatment and infiltration. He noted that a geotechnical report and field testing was
completed for the infiltration areas and will be submitted for the application.
R. Muckle asked what activity and vehicle use will take place in the storage yard and what dust
control measures are proposed. S. Moran noted that the storage yard will contain concrete panels
stored in rows, gantry cranes are used to move and load the panels. The storage yard will be
gravel surface and run-off will drain to 3 off-line sediment forebays within the storage yard.
Crushed stone will be placed on top of site gravel. Water trucks will be used as needed to

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August 19, 2020 — Special Meeting
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mitigate dust.
M. Fitzgerald questioned the proposed clearing limits within the 100 ft. upland review area in the
propose stormwater area on the east side of the facility. S. Moran indicated the previously
constructed basins on the site would not be cleared beyond the limit of grading. M. Fitzgerald
asked where the 300 ft. turtle conservation area mentioned in the herpetologist’s report is located
and how will it be conserved or restricted. S. Moran replied he would coordinate with Mr. Quinn
to determine the area.
R. Muckle asked about outdoor lighting and any proposed abatement of potential noise during
the 2" and 3" shift. S. Moran replied that they are looking at a planted natural solutions rather
than noise barrier.
W. Thomas questioned if a stormwater management plan has been submitted to the application.
J. Price replied they have prepared an application for the State Stormwater discharge permit and
a copy will be provided.
The Commission continued this application to their next regularly scheduled meeting on
Thursday, August 27, 2020.
4. PAYMENT OF BILLS
Motion: Motion made by T. Maidelis, second by D. Lersch to pay the bill from The Day
for $78.75.
Vote: 6-0
5. ADJOURNMENT
Motion: Motion made by D. Lersch, second by J. Wainscott, to adjourn at 8:07 p.m.
Vote: 6-0
Respectfully Submitted,
Katrina Kotfer
Recording Secretary