10/09/2013 ZONING BOARD OF APPEALS Decision

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MASHPEE ZONING BOARD OF APPEALS TCB Mashpee Village LP Minor Modification-1974 Special Permit One Wampanoag Drive(Map 66 Parcel 1-0-R) Mashpee, MA 02649 SP-2013-47 Presently the site is served by a mix of seven.(7) Title 5 septic units of the garden- style apartments and multi-family units, as well as common septic systems for the homes on Amos Circle.The applicant wants to centralize the septic system to improve both ground water quality and treatment of the wastewater throughout the development. This enhanced treatment system will include a 36' x 44' structure to house the pumps and blowers and will be consistent with the architectural style of the development. Kevin Olsen, of Wright-Pierce Engineering presented a booklet to the Board containing the advantages and design of the proposed structure. His focus with Community Builders is the waste water infrastructure site which is about 40 years old. He stated the time has arrived for an improvement of the waste water collection system as well as treatment and disposal.He gave an overview of the project and site of the building location. He stated there are currently three different systems in place. This project will basically provide one common system and a near term solution. It will help mitigate the current pumping needs and will also provide a long term reliable sustainable solution. The proposed structure will be designed and constructed in conformance with DEP permitting. He stated he consulted with Tom Fudala on several occasions to make sure the solution on the wastewater side was consistent with the Town's overall comprehensive wastewater management planning, is consistent with the Massachusetts Estuaries Project nitrogen goals, and will provide improved discharge quality to the ground water. Currently there is septic system and is not highly treated going into the ground. For practical purposes it really doesn't effectively remove nitrogen. The current system is putting out 30 milligrams per leader of total nitrogen into the ground water. The new system will put out 5-10 milligrams per leader to 700 lbs. year, or less. Stephanie concluded, the individual septic systems that exist under Title 5 will be properly abandoned and will require emptying and filling them with sand or appropriate material. Each of the homes and apartment buildings will no longer have or share any Title 5 systems.This new system will connect all the homes and apartments. Besides the obvious benefits of one centralized treatment facility, enhanced treatment of the wastewater, it is also allegations imposed by the grandfathered discharge permit issued by the department including monitoring making certain the plant is working at the appropriate level as well as financial assurance requirements for the ongoing maintenance and replacement of the system. This is a significant commitment by the applicant and well worth to the existent that it overlaps with the Board's authority, and simply because the 1974 Special Permit obviously did not anticipate an accessory structure to house the blowers, pumps and emergency generators. 2