09/19/2019 BOARD OF HEALTH Minutes

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There being no further comments or discussion, Laurel Almquist moved to continue discussion of the request for Title 5 variance at 77 Tide Run to allow Town Counsel time to review the matter. Motion seconded by Brian Baumgaertel. VOTE: Unanimous (2-0). 7:30—10 Evergreen Circle Mr. Harrington commented that this plan was reviewed during Site Plan review on May 7, 2019. The plan was more conceptual then, but detailed plans have since been completed. In discussions with the engineer, Mr. Harrington made note of the drainage, as it lacked the subsurface component that the Board of Health requires and the effluent tee filter placed on the outlet tee of the grease trap. Mr. Harrington expressed concerns about it clogging and not operating as intended; however, it was included by the manufacturer of the proposed I/A system. Mr. Harrington further commented on the fact that the recirculation line was discharging at the outlet end of the septic tank, and not at the beginning. It is his understanding that, to get additional denitrification, the carbon in the first chamber should be utilized. The industrial waste holding tight tank was removed from the plan,which means that no vehicles will be entering the building and floor drains will not be required by the Plumbing Inspector. Chair Baumgaertel asked what the facility was being used for, and Mr. Harrington indicated that he had not seen a menu, but believed it was mainly for coffee production. He further advised that there were 67 seats proposed. There would be no vehicles permitted inside the building. After a brief discussion,it was determined that a tight tank is not needed. Mr. Harrington stated that the septic system is proposed under the pavement;therefore,the variance for the reserve area,even with the denitrification unit,should be denied. The Board has allowed the variance for existing properties that have an existing SAS, but are retro-fitting with a denitrification unit because they were over 600 gpd. This situation is restaurant flow, which is a highly organic waste. A representative for the applicant, who was present at the meeting, stated the plan proposes to install the reserve trenches in between the primary. Chair Baumgaertel expressed concern about losing treatment by installing reserve trenches within what is considered to be treatment area. He did not believe the reserve area could be installed without completely disturbing the 2' of material between the reserve and the primary lateral. Chair Baumgaertel also stated that coffee has been known to quickly destroy a leach field and,therefore, he is not inclined to grant a variance for the reserve area. Given it's a new building,there is not a valid reason not to have the reserve in place. The developer was encouraged to take a second look and, if it can be demonstrated that it's completely unfeasible, the Board would reconsider at that time. There being no further comments or discussion, Laurel Almquist moved to continue discussion of the septic and site plan for 10 Evergreen Circle to the next meeting on October 10, 2019. Motion seconded by Brian Baumgaertel VOTE: Unanimous(2-0). 7:35—161 Old Barnstable Road Mr. Harrington commented that this is a new construction application for a three-bedroom dwelling. The size and layout of the lot, with wetlands, dictates the necessity for variances to the wetlands. The proposed primary and reserve SASS are within 75' of the border of vegetative wetlands; therefore, a denitrification unit and UV disinfection are provided per the I/A Regulation. Testing of the denitrification unit and UV would be in accordance with the regulation. 3