01/22/2024 SELECT BOARD Minutes - Laserfiche WebLink

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4 Mashpee Select Board Minutes January 22, 2024 APPOINTMENTS & HEARINGS Rqp4 ritA.Public Works Director Catherine Laurent: Stormwater MapWrqqRt U Catherine Laurent,Director of Public Works was in attendance with Garbielle Belfit of Tighe&Bond to review the Town's Asset Management Plan, a part of the EPA's Small MS4 Stormwater Program. The MS4 refers to Municipal Separate Storm Sewer System which includes all drainage within municipally owned areas. Stormwater is one of the fastest types of pollution in Massachusetts. Mashpee's Stormwater Progrw-n.(SWMP) consists of 5 Minimum Control Measures(MCMs). This includes public education and outreach, public involvement and participation, illicit discharge detection and elimination program, construction site stet' water runoff control, stet' water management in new development and redevelopment and good housekeeping and pollution prevention. The To in permit year 5 is required to address the MCMs each year. Ms. Belfit indicated the To of Mashoe has successfully addressed the permit year requirements, Ms. Belfit stated there is one additional area that needs to be addressed by the To of Mashpee. There is a need to address water quality; Total Maximum Daily Loads (TMDLs) and the number of water bodies impaired. The TMDL and impaired water body requirements and supplemental BMPs include; annual timed messages on nutrient pollution related topics, stet' water management Best Management Practices(BMPs)optimized for nitrogen and phosphorus removal, good housekeeping SOPSs for Town properties and street sweeping twice per year. All base are requirements have been met. A map of the TMDL water bodies was reviewed to depict the discharge outfalls, areas of impairment, and TMDL assignments. Ms. Belfit indicated there is need to specifically focus efforts on nutrient pollution,leaf litter, fertilizer and the management of house, waste distributed. Activities completed in pen-nit year 5 include; annual requirements, impaired waters/TMDL requirements and good housekeeping requirements, The BMP Retrofit Inventory Report, an activity completed in PY5 included phosphorus source ID requirements, pollutant load optimization for new and redevelopment and Ashumet& Santuit Pond impairment requirements. Five sites are selected for conceptual retrofit design. This includes the Attaquin Park deep sump catch basin, the Quashnet elementary bioretention basin,the To Archive sediment forebays,the DPW and the Mashpee Kids Klub, As the To moves forward to PY6 it is required the list of 5 sites selected for the conceptual retrofit design be ongoing. If one is implemented,another project from the inventory would be added to the list. It was noted that Town owned sites have been identified on As et Pond and within the San it Pond watershed. Additionally, all culverts have been inspected and analyzed for risk of failure and expense to develop the top retrofit locations.