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Board continues review of SeptiTech STAAR denitrification for 95 Mayflower Lane
Summary
The Board of Health continued a request for a SeptiTech STAAR denitrification system at 95 Mayflower Lane (a proposed seven‑bedroom configuration) and asked staff to obtain percent‑reduction performance data and clarify whether prior waiver practice applies when household flow increases.
The Tisbury Board of Health continued its review on April 30 of a proposal to use a SeptiTech STAAR denitrification system at 95 Mayflower Lane to serve a five‑bedroom primary residence plus a two‑bedroom accessory dwelling unit (seven bedrooms total).
Board members and staff discussed whether prior waiver practice — which had, according to staff, typically been limited to year‑round housing without increased flow — could be applied when the project would increase flow and bedroom count. They examined comparative performance and cost considerations between the proposed SeptiTech STAAR unit and more established nitrogen‑reducing systems, and explored options including conditioning relief on reduced bedroom count, limiting use to year‑round occupancy, or requiring a deed restriction.
The applicant indicated willingness to modify the proposal, including the possibility of reducing bedroom count. The Board asked staff to gather or verify supporting percent‑nitrogen‑reduction performance data and to clarify the local regulatory interpretation before returning the matter to a future meeting.
No formal vote was recorded on the application; the matter was continued for additional information.
