8/20/2020 BOARD OF HEALTH Minutes

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There being no comments or revisions,Veronica Warden moved to approve the minutes of the July 2,2020 public session meeting. Motion seconded by Brian Baumgaertel. Roll call vote: Brian Baumgaertel (yes);Veronica Warden (yes). VOTE: Unanimous(2-0). 2. Sign expense warrants. It was understood that expense warrants would have to be signed outside of the meeting,due to there being no Board members physically present. 3. Review of request for Title 5 variance,38 Quail Hollow Road. Mr. Harrington commented that a variance had been requested to allow a two-bedroom dwelling to be constructed with no naturally-occurring pervious soil above groundwater, as required by Board of Health regulations. Historically, two properties have had this variance approved, 265 & 266 Monomoscoy Road. In both cases, a composting toilet with a gray water Title V system were required. In this case, a Busse Model 250 was being proposed. Mr. Harrington researched the effectiveness of the Busse system and determined it provided roughly 61%total nitrogen removal. The phosphorous unit removed 98%. The composting toilet removes roughly 83% nitrogen, but the phosphorous removal provided by the composting toilet was unknown. The area around this property is serviced by town water. There has been algae growth in the abutting John's Pond, so phosphorous reduction has some value in treating the nutrients from this system. Matthew Costa of Cape& Islands Engineering introduced himself for the record as representing the applicant. He stated that the property has been family-owned since 1965, and has always been treated/taxed as buildable lot. A perc test was performed and determined that soils on site were fill and had to be classified as such, effectively rendering the lot unbuildable unless a variance is granted. The owners were proposing a modest 2-bedroom house, with a bio- membrane reactor, that has been approved in Mashpee previously as mitigation for a well variance. Mr. Costa stated the proposed phosphorous add-on removes about 98% of phosphorous. The media typically gets replaced every 4-5 years, which removes the phosphorous, and the media is recycled. Mr. Costa provided the Board with some historic information on the site. Based on the age of vegetation on site and the fact that the property was family-owned the entire time, Mr. Costa stated that the fill was likely placed during road construction. This is a pre-existing condition that wasn't created by the owner, and therefore is a hardship. Ms.Warden asked who witnessed perc test and Glen answered that he had,stating there were a lot of organics, with a low area that had been filled to about 8' and then buried peat to roughly 110". Ms.Warden asked if the Busse system is self-contained,and Mr.Harrington answered that it discharges to a Title V system. Mr. Harrington went on to say that engineers would have to determine where the good soils is, and prove that there is 5' of pervious naturally occurring soil below the system. Chair Baumgaertel stated that Busse does not currently have approval for phosphorous units,and Mr. Costa responded that they would be seeking a pilot approval from the state. Chair Baumgaertel asked if Busse usually goes straight to the leaching, and Mr. Costa advised that the septic tank is proposed as a fail-safe. Mr. Costa stated that he was highly confident they would get DEP approval and that they would find good soils below the peat level, but the owner did not want to incur the added expense unless the Board would be willing to grant a conditional approval. Chair Baumgaertel asked if Busse is going for pilot approval or site specific approval,and Mr.Costa answered that site specific would be quicker, but that there is value going for a pilot to deploy 15 3