07/17/2025 SEWER COMMISSION Minutes (2)

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Town of Mashpee Sewer Commission t 16 Great Neck Road North Mashpee, MA 02649 Mr. Drainville said that the bidding process is in progress,with six contracts out to bid.Two bid openings have occurred already, with three more scheduled the following week and a final one the Monday after. He also referenced prior presentations on sewer phasing plans, noting they had received feedback from the Select Board, Sewer Commission, and Department of Public Works. Mr. Drainville is working with Catherine and Jared Meader to align project phasing with the town's paving schedules and funding availability. Phase Two Construction Contracts and Planning • There are four separate contracts for collection systems, meaning the pipe networks that carry sewage from homes to the treatment facilities. • There is one contract for pumping stations, of which there are six, distributed across the network to move wastewater effectively across varied elevations. • There is also a staged upgrade plan for the main treatment facility, ensuring that the plant is capable of expanding capacity as additional homes are connected in future phases. • The original projection was 2,288 residences,though 1,288 may have applied to an earlier version or alternate scope. • The system is designed to be adaptable, adjusting with future growth and evolving planning priorities. • Presentation to the Select Board: Mashpee-Wakeby Satellite Facility • Mr. Drainville reported that he had recently appeared before the Mashpee Select Board to discuss the proposed satellite treatment system for the Mashpee-Wakeby Pond area. • He clarified that this system is envisioned as a "below-grade cluster treatment facility," meaning: o Most of the infrastructure would be built underground, including the treatment tanks. • This setup differs from the more visible and complex main treatment facility, offering a less visually intrusive alternative for residential neighborhoods. • He emphasized that: o The satellite project is listed on the State Revolving Fund (SRF) list,which means a comprehensive application package must be assembled. o The recent Select Board appearance was not to seek approval of the project itself but to request permission to begin holding public discussions and hearings. o The intent is to formally invite residents to provide feedback, raise concerns, and explore possible mitigation or design changes in response. Four of the six current contracts are designated for collection systems, one for pumping stations, and another for treatment facility upgrades.The phased design allows for scalable infrastructure growth in tandem with increased residential connections.The current estimate is for approximately 1,288 residences to be included in Phase Two. Mr. Drainville confirmed this number as accurate, clarifying that it was originally projected as 2,288 but has since been refined. Mr. Drainville also reported that he recently presented the Mashpee-Wakeby satellite facility proposal to the Select Board.This presentation mirrored what had previously been shared with the Sewer Commission and included details about the intention to use a below-grade, or underground, cluster treatment system—distinct from the larger main treatment plant.