01/22/2024 SELECT BOARD Minutes - Laserfiche WebLink

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5 Mashpee Select Board Minutes January 22, 2024 APPOINTMENTS& HEARINGS artment of Public Works Director Catherine Laurent: Dep_...._. -..................... ........... ......................... ........ _ ._ Stormwater Management Update: (continued) Discussion followed with respect to the 5 sites selected for conceptual retrofit design. The designs at present are conceptual, and not final. It was noted the Attaquin Park deep sump catch basin would capture the contaminants within the stormwater to eliminate runoff in the outflow. The design in a solid structure would capture, remove and dispose of contaminants with the cleaner water moving in the process for release or for infiltration. The Town is also looking at large parking areas leaching into catch basins to obtain the most benefit from treatment options tying into public education. This includes the Quashnet Elementary and the DPW listed in the 5 sites, as well as the DNR building and other Town owned properties. Santuit Pond through the Department of Natural Resources and its MVP grant has been reviewing projects for retrofit. Activities planned for permit year 6 include; annual MS4 general permit reporting,complete the AM program, BMP nutrient removal,tracking and annual DPW staff training. The expiration of this program in 2022 does not affect the Town's ability to apply for grants. The permit is valid, and it is administratively continually as it carries over in a 10-year compliance. Participation can leverage grant funding. The Town is working with the state to finalize designs for the parking lots. Permits are anticipated to be filed in the early spring. With grant funds it is anticipated that work would begin in the summer or early fall. There is concern with respect to the significant rain events, as it relates to runoff from private properties. There is a need to further educate the public. Practices to curb water flow may include French drains,bio-retention, snow removal control and options for grading. Not washing leaves off a driveway would reduce pollution. The Town has information with respect to this regard on their website. In managing stormwater,new developments can be addressed with conditioned permits. General bylaws could be imposed for private areas to include parking sites and road designs,barriers in critical areas of concern. With regards to the Mashpee River,the Town has received funding in collaboration with the Tribe and NOAH to design a restoration project as it involves this historic location. This would include engineering and review of sedimentation, improvement of flow and analysis of the culvert. Work in segments is anticipated to start at the head waters of the Mashpee River. As the Town applies for grant funding the designation of Mashpee as an Environmental Justice community may have leverage and assist in the remediation of impaired waters.