2019-06-10-CONCOM-min - Laserfiche WebLink

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adjacent wetlands in the project area. Impervious surface area will be removed and replaced. The drainage will be directed to the wetlands. The stormwater management system includes inlets that lead to an infiltration system. There are three water quality units. The Air Force Base asked that the runoff be reduced by 10% in order to achieve their own runoff goals. The water discharges into the headwaters of the Shawsheen River. Chairman Hamilton read the engineering memo into the record. Ms. Mullins stated that a legal opinion has not been submitted by Town Counsel. Ms. Mullins stated that one of the wetland resource areas is subject to town bylaws because it is considered navigable waters. Mr. Scott Sheehan stated that according to WOTUS section 3.13 local jurisdiction can regulate any navigable waters. The wetland is excluded from state regulations but must abide by local town bylaws. Mr. Langseth stated that conceptually the project is fine but the sizing of the systems will probably have to be increased. On a motion by Mr. Langseth and seconded by Mr. Beuttell, the Commission voted 7-0 to continue the hearing until June 241h at the applicant's request. Ms. Ladd rejoined the Commission. DEP 201-939 BL 898 Amendment to an Order of Conditions/NOI, 30 Oakmount Circle Applicant: Merek Franklin Project: Modifications to Site Plan for single family dwelling construction Mr. Dan Orwig presented before the Commission. Several changes were made during the construction process that needed to be reviewed by the Engineering Department. The infiltration system was moved in order to save a tree on the property. During the construction process, the contractor hit ledge in the front yard area which caused them to move the retention basin. In doing so, the retaining wall was constructed as one wall as opposed to two smaller walls. A proposed patio in the rear was not constructed. Chairman Hamilton read the engineering memo into the record. Mr. Langseth agreed that the changes made during the construction process benefitted overall the resource areas however the applicant was supposed to ask for permission before the proposed changes were made. An abutter from 28 Oakmount Circle asked to confirm that the drainage areas were not altered during construction.