2021-10-25-CONCOM-min - Laserfiche WebLink

Browse Search

Ms. Mullins stated that the applicant provided an invoice dated 10/25/2021 for the purchase of two `October Glory' Swamp Red Maples. Per the Order of Conditions, the applicant is required to plant only a native variety and what was purchased is a cultivar. This will be continued to a future hearing. Certificate of Compliance: 7 Lois Lane, ViewPoint Cloud Permit#COC-20-14, DEP4201-1152, BL 1152 This will be continued to the next meeting. New Public Meetings/Hearings Request for Determination of Applicability: 99 Hancock Street(Diamond Middle School) ViewPoint Cloud Permit# CDOA-21-13 Applicant/Property Owner: Town of Lexington Project: installation of new concrete pad and natural gas generator, main circuit breaker and CB cubicle switchboard. Impervious area increase of 198 square feet. All proposed work is outside of the 100 Foot Wetland Buffer Zone Documentation Submitted.- - ubmitted:— Sheet 1.3.01 "Site Layout& Grading Plan and Sitework Details" and Sheet 10.1.01 "Site Electrical Plan"; Prepared by: DiNisco Design; Stamped and signed by: Fredric W. King, PE Civil No. 38089; Date: 9/24/2021; — Project Description; From: Kevin Riopelle, DGT Associates; To: Lexington Conservation Commission; RE: Diamond Middle School Emergency Generator Project at 99 Hancock Street; Date: 9/24/2021; — WPA Form 1 Request for Determination of Applicability application; Prepared by: Kevin Riopelle, DGT Associates; Prepared for: Michael Cronin, Town of Lexington; Date signed by applicant: 9/24/2021; Date signed by representative: 9/28/2021; Mr. Kevin Riopelle, civil engineer, on behalf of Lexington Facilities,presented to the Commission. The applicant is proposing to remove the existing generator and generator pad on site and replace with a new concrete pad and generator, 257 feet away from wetlands to the southeast. Mr. Riopelle stated that the runoff will be collected in an existing catch basin to the north and discharged to wetlands 680 feet to the north. He added that there will be no adverse impact to the stormwater management system. It was noted that the volume calculation for the 1 year storm event exceeds existing conditions. Mr. Riopelle responded that the volume calculation for the 1 year storm event is about a .001 (acre foot) increase or about 44 cubic feet. This volume is not in compliance with the original permit. Mr. Riopelle added that the existing subcatchment is a mostly wooded area and almost no runoff is generated from this wooded area. The Commission agreed that they would like the applicant to rerun the calculations for the purpose of consistency. On a motion by Ms. Ladd and seconded by Mr. Beuttell, the Commission voted 6-0 by roll call vote to continue the hearing to the November 22, 2021 meeting at the applicant's request.