HomeMy WebLinkAbout24IWC11-375 Maple Ave-Engineering Review 2 1-14-2025
John U. Faulise, Jr., L.S. David C. McKay, P.E.
Gerald J. Stefon, L.S. (1952-2021) Jacob S. Faulise, E.I.T.
Boundaries LLC
179 Pachaug River Drive
P.O. Box 184
Griswold, CT 06351
T 860.376.2006 | F 860.376.5899
www.boundariesllc.net
January 14, 2025
Ms. Stacy Radford
Zoning & Wetland Officer
Department of Land Use & Development
Town of Montville
310 Norwich-New London Turnpike
Uncasville, CT 06382
Re: 24IWC11 – 349 Maple Ave. LLC
375 Maple Ave. and Route 163
Montville, CT
Site Improvement Plan and Stormwater Management Report Review
Dear Ms. Radford,
Per your request Boundaries, LLC. has completed a review of the site improvement plans and stormwater
management report for the proposed trailer storage facility located at 375 Maple Avenue and Route 163
(Map 031 Lot 015-000 and Map 031 Lot 019-000) prepared by CLA Engineers, Inc. This review is intended
to evaluate compliance of the plan with the requirements of the Town of Montville Inland Wetlands and
Watercourses Regulations.
The following documents were received as part of the application package:
· Revised Inland Wetlands Application and Abutters Lists.
· Revised Project Narrative Letter.
· Revised Stormwater Management Plan.
· Wetland Delineation Report.
· Revised Site Improvement Plan, 375 Maple Avenue/Route 163, Town of Montville, Connecticut
06382, Prepared for 349 Maple Ave. LLC, 410 Maple Avenue, Montville, Connecticut 06382,
Revised January 13, 2025.
The previously provided comments have been addressed. Based on the revised documents I have the
following comments or questions:
Page 2
Stormwater Modeling
· Per page 60 of the Stormwater Quality Manual, “If flow rates and velocities at critical downstream
locations increase by less than 5% from the pre-developed condition, and no existing structures
are adversely impacted including exceedance of freeboard clearances and allowable flow
velocities, then no additional analysis is necessary. Otherwise, the project proponent should
redesign the stormwater quantity controls on the site and/or propose corrective actions to the
impacted downstream areas.” Please certify for the project record that the increased runoff rates
from the site will result in less than 5% increases in flow rates and velocities at downstream
locations and that no existing structures will be adversely impacted.
30-inch Drain Relocation
· Please provide the proposed top of frame elevation for the downstream manhole.
· Please specify the proposed rip rap gradation for the spread apron on the site plans. Per the
information provided in the stormwater report rip rap used at the drainage discharge should be
“standard.”
· Please incorporate a hood in the proposed catch basin if feasible and acceptable to the
Department of Public Works to provide some treatment of stormwater prior to discharge.
Please do not hesitate to contact me with any questions.
Sincerely,
David C. McKay, P.E.