HomeMy WebLinkAboutTE & SS Cmnts 8-13-2024
August 13, 2024
Stacy Radford
Zoning & Wetland Officer – Dept. of Land Use & Development
Town of Montville
310 Norwich-New London Tpke., Uncasville, CT 06382
Via Email: sradford@montville-ct.org
RE: Inland Wetland Application 24 IWC 7
339 Chesterfield Road Site Development
CLA-7873
1. Beavers and beaver dams are a known issue in that pond and watershed area. We would
recommend that the owner should be required to monitor and mitigate any beaver
activity at the new driveway culvert crossing. Addressed.
2. Stormwater calculations for the sizing of the driveway culvert crossing should be provided.
The drainage area figure provided appears to exclude some watershed area. In our
estimation the watershed appears to be around 18-20 acres. The Applicant should
review watershed and updated the watershed map and calculations. The watershed
map should be a scaled map/figure.
3. Pipe inverts and grading for the wetland crossing should be provided (spot grades or
contours). Addressed.
4. The driveway culverts appear to end at the edge of driveway, how will the
edge/embankment be stabilized? Will guide rail be required? Addressed.
5. Is there adequate cover over the culverts for the fire apparatus traffic loading specified?
Addressed.
6. Will electrical code allow for the installation of the underground electrical conduit within
the ±12” of soil over the driveway culverts? Addressed.
7. Will additional temporary wetland disturbance be needed for the driveway and culvert
construction? Addressed.
8. A construction narrative for the driveway and culvert construction through the wetland
should be provided. Including construction sequencing and means for dewatering or
water diversion as needed. Construction narrative and dewatering information have
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been included on plans. The dewatering discharge point has been shown in the
wetlands, this discharge point should be relocated to an upland area.
9. The application does not include a wetland function and value assessment. Provide a
description of if and how a variety of wetland functions may be impacted by the proposed
development. The wetland function and value assessment provided by the soil
scientist is satisfactory.
10. Provide information for replanting the land where the existing house is. How will the
upland review zone be re-vegetated? Seed mixes and replanting narrative have been
added to the functional assessment document. Ensure that plans have both seed
mixes clearly labeled.
11. How will disturbed soils throughout the site be re-vegetated? Comment not addressed.
Provide notes and details on soil stabilization in upland along driveway and behind
house.
12. Will areas of temporary wetland disturbance be re-planted? Appropriate wetland seed
mix has been provided.
13. Show a feasible soil stockpile location. Addressed.
14. Provide a copy of the plan signed by the soil scientist. Addressed.
15. Has wetland mitigation been considered? Addressed.
16. Several test pits and percolation tests are noted on the project plans. Provide the data
from these pits and perc tests. Addressed.
17. Has the septic design been approved by Uncas Health District? Addressed.
18. Show proposed limits of clearing adequately beyond the limits of proposed grading.
Comment not addressed. In and around wetland crossing and driveway, additional
clearing will need to occur for construction. Widen limits of clearing in wetland as
practical for construction.
19. The stone diaphragm proposed along the driveway is at the edge of the wetland and
beneath a cut slope. It is likely to remain saturated. There may be a need to move the
driveway further from the wetland or elevate it on the proposed location. Addressed.
20. Show a feasible soil stockpile location greater than 50 feet from the inland wetland.
Addressed.
21. Show proposed limits of clearing. Addressed.
22. Show grading for the septic system. This may extend the limits of clearing further
downhill. Addressed. If this changes, the applicant needs to come back to Inland
Wetlands Commission.
23. Clearly show and call out all E&S controls along the edge of disturbed soils. Addressed.
24. Provide woodchips or hay bales co-located with the silt fence barrier in the upland.
Addressed.
25. Use woodchip berms for E&S within the wetland. Addressed.
26. Quantify the temporary wetland disturbance including cutting of vegetation and
placement of E&S. Addressed.
Thank you for the opportunity to provide this review. Please feel free to call us at our office or email
khaubert@claengineers.com or brusso@claengineers.com with any questions or comments.
Very truly yours,
CLA Engineers, Inc.
Kyle Haubert, P.E.
Robert Russo C.S.S.