2019-07-22-CONCOM-min - Laserfiche WebLink

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routed through the underground system and outlets to an existing culvert. The additional field will be routed to an existing manhole. The parking area runoff is discharged towards Lincoln. The driveway runoff will be captured by catch basins and routed to a water quality unit before being discharged. The last field discharges into a vernal pool where there is a water quality unit and dry well before it enters the vernal pool. The last field is located over the Town of Lincoln property line. The Lincoln Conservation Commission hearing has closed for this project. The project will be discussed by the Lincoln Planning Board the following day. The Town of Lexington Planning Board has approved the project. Ms. Kayersman stated the proposed Field House will be tied into the current utility lines. The soil erosion controls will be comprised of compost silt socks which are located on either side of the road. One line of erosion control is existing along the outer boundaries of the existing road as a part of a previously permitted project. The applicant is proposing to install an additional erosion control on the inside of the roadway. Mr. Eric presented the photometric plan which shows that the lights primarily focused on the fields themselves. Additional lighting will need to be provided along the pedestrian paths. The road, which borders the wetland, has a light level of zero which means that the wetland is not lit. A tree count has been completed. A currently existing field will be retired which will act as a "conservation area"where tubelings will be planted. Tubelings and conservation mix will be planted where trees are proposed to be removed on the lower multipurpose field. Ms. Dohan asked about the turf substratum. Mr. Roise stated that there are 24 inches of washed gravel. Ms. Kayersman stated that it is double washed gravel with under half a percent of fines included. Mr. Roise stated that it gets dusted with finer stone and the turf carpet goes on top of that with a Brazilian pad. The 2 inch turf carpet is then infilled with a creme rubber coated with a food grade acrylic to keep the turf cool. Ms. Kayersman stated that there are structures within the paved areas so everything will have the 80% TSS treatment and be treated in the water quality unit. On a motion by Ms. Dohan and seconded by Ms. Beuttell, the Commission voted 4-0 to continue the hearing until August 5, 2019, at the applicant's request. New Business/Pendine Matters Ms. Mullins presented Lexington's new online permitting system to the Commission. On a motion by Ms. Dohan and seconded by Ms. Beuttell, the Commission voted 4-0 to adjourn the meeting.