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HomeMy WebLinkAbout2014-07-01 CONCOM-min TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES Tuesday, July 1, 2014 6:30 P.M. Parker Room, Town Office Building 1625 Massachusetts Avenue Chair Joyce Miller opened the meeting at 6:40 pm in the Parker Room of the Town Office Building. Commissioners Present: Joyce Miller (arrived at 6:39 pm), David Langseth, Dick Wolk (arrived at 6:39 pm), Jane Warren and Duke Bitsko Commissioners Absent: Stew Kennedy and Phil Hamilton Others Present: Michelle Morelli, Community Development Department Assistant PENDING MATTERS 6:40 pm Plan change: 149 Adams Street, DEP# 201-922, BL 882, underground propane tank installation Steve Cavallo, Lexington Development was present for this discussion. He gave a description of digging 5’ into the 100’ wetland buffer zone in order to install an underground propane tank. Mr. Cavallo explained two options for locations of the propane tank. Option #1 would require the least amount of trenching and a fill port will be 6” above grade for a truck hose hook up. Mr. Langseth asked if erosion controls were proposed. Mr. Cavallo replied there are existing erosion controls on site. Mr. Langseth commented the stockpiling be covered or erosion control placed in the area of work. Motion made and seconded to approve the plan change as described on the plan with option #1, 5-0 in favor. 6:46 pm Update on non-compliance and extension of Order of Conditions: 9 Tufts Road, DEP# 201-835, BL 793 Mr. Langseth commented the infiltrator unit should either be re-constructed to its original capacity or re-located to the front yard. Mr. Langseth stated that performance standards would not be met if the system is left in its existing location and the non-conforming portions of the project previously required mitigation. Mr. Langseth suggested submittal of a detailed analysis for the system in order to support it functioning properly. The Commission discussed the need for an independent observer. The applicant commented on the design change due to conditions in the field. Mr. Wolk asked for a clarification on the runoff being infiltrated. Mr. Langseth stated there was additional capacity that was reflected in the original design. The applicant will come back in front of the Commission at a later date with a proposal for additional chambers. 7:18 pm Motion made and seconded to issue a Certificate of Compliance for 10 Vaille Avenue, DEP# 201-864, BL 822, pending a site visit by the administrator, 5-0 in favor. 7:19 pm Motion made and seconded to approve the minutes from June 10, 2014, 5-0 in favor. Motion made and seconded to approve the minutes from June 17, 2014 with minor edits, 5-0 in favor. 7:20 pm Meeting – 456 Concord Avenue, RDA DET# 14-10 Applicant: Gunish Chugani Installation of a garage wall and landscaping within the 100-foot Buffer Zone Present for the Applicant: Gunish Chugani, Applicant Mr. Chugani proposed construction of two walls on the front and back of the carport and native plantings which are listed on the plan. There are no trees proposed for removal, only trimming will occur. Comments from the Commission as follows: Ms. Miller asked if a foundation would be dug. Mr. Chugani explained the construction of the walls are remaining within the footprint of the existing carport. A trench will be dug within the 50’ buffer zone. Ms. Warren stated that western bamboo is invasive and suggested a different native plant for the arborvitae as well . The Commission discussed the wetland line. Mr. Langseth asked if an erosion control was proposed for stockpiling of soil. Mr. Bitsko asked if the trench drain was taking roof runoff. The Commission discussed the trench drain day-lighting to wetland, but it is not shown on the plan where the runoff comes from. The pipe is also not shown on the plan. Mr. Langseth commented that some erosion control should be placed at end of pipe. Mr. Wolk stated changing the plantings as suggested and erosion control measures during construction of the trench. Motion made and seconded to continue the meeting to July 15, 2014 at 7:00 pm at the request of the applicant, 5-0 in favor. 7:35 pm Hearing – 425 & 509 Woburn Street, NOI DEP# 201-944, BL 902 Applicant: Brian P. Kelley Construction of an access driveway and parking within the 100-foot Buffer Zone to Bordering Vegetated Wetland Present for the Applicant: Rich Kirby, LEC Environmental Consultants, Mike Novak and Rick Waitt, Meridian Associates and Brian P. Kelley, Applicant Mr. Kirby gave a description of the site and proposed the teardown and construction of a condominium. The site borders an intermittent stream and part of the access and parking is within the 100’ buffer zone. Area drains are directed to Cultec chambers. The roof runoff goes directly to infiltration systems. An addendum plan was submitted before the meeting for construction of a sidewalk, which extends to the south side of Woburn Street and near Peachtree Road. Comments from the Commission as follows: Mr. Langseth asked where the stream crossing is shown on the plan. The wetland boundary intercepts a concrete headwall, which contains two culverts that extend beneath it. Culvert inverts need to be shown on the plan or addition of a note of two culverts on the plan. Mr. Langseth asked about incorporating stormwater management for existing roadway into the system. Mr. Bitsko stated the snow storage area needs to be designated on plan. Mr. Bitsko commented that the operations and maintenance plan needs to utilize the words, “shall not” in reference to the use of salt and chemicals. Motion made and seconded to continue the hearing to July 15, 2014 at 7:00 pm at the request of the applicant, 5-0 in favor. 7:51 pm Reports: Bike Advisory, Community Preservation Committee, Land Steward Directors, Housing Partnership, Tree Committee, Land Management, Land Acquisition, etc. There were no reports given. 7:52 pm Cont. Hearing – Lot 186E & Oakmount Circle, NOI DEP# 201-939, BL 898 Applicant: Merek Franklin, Copley Design Construction of a single-family dwelling with underground utilities and paving of a portion of Oakmount Circle within the 100-foot Buffer Zone to Bordering Vegetated Wetland Motion made and seconded to continue the hearing to July 15, 2014 at 7:00 pm at the request of the applicant, 5-0 in favor. 7:53 pm Motion made and seconded to adjourn the meeting, 5-0 in favor. Respectfully submitted, Michelle Morelli Community Development Department Assistant