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J6 <br /> would be load based or concentration based. Mr. Gurnee suggested that use of individual <br /> treatment plants would be most cost effective by expanding the facilities as much as possible. <br /> The Chair stated that willowbend would likely require an upgrade and expansion would be <br /> constrained by its location, although discharge on the golf course could be an option. The Chair <br /> added that a large field located next door had been previously offered to the True and could be a <br /> possibility for expansion, although the Transfer Station Municipal Plant would likely treat the <br /> area: The land could also,serge as a discharge area. Mr. Gregg pointed out that New Seabury <br /> would discharge outside of the watershed and was a consideration as receiving more flow with <br /> expansion or remain at stags quo. The Chair stated that New Seabury was critical with a. <br /> 300,OOO gpd permit and only 200,000-250,000 gpd expected to be used by New Seabury <br /> residents and expansion was a possibility. The Mashpee Commons 80,000 plant was located-at <br /> the core of town, with plans to increase development, and permitted for 180,000 gpd,with <br /> buildout requiring an expansion to 2501,000 gpd. For some time there has been an expectation <br /> that the plant would become municipal. The greatest challenge was that it was located Soo feet <br /> or less from the Mashpee River. One element of sever planning has included piping the treated <br /> effluent from the plant, as well as windchime Point and South Cape village, to New Seabury. <br /> Mr. Gregg referenced a rainbow spreadsheet with the proposed treatment and discharge sites to <br /> estimate proximity to 1P model results. There was further discussion regarding the analysis of <br /> re-locating the flow and the availability of capacity at the sites under consideration. Mr. Gregg <br /> pointed out that there were sites that could physically handle the increased flow, but possibly not <br /> the nitrogen content. The High School plant was already owned by the town and there was <br /> discussion regarding its expansion. Mr, Gregg indicated the possibility oftreating the flow <br /> where it was located or pump it to a new treatment plant,treating it at that location, also <br /> suggesting that a nitrex system could be added to a site to further knock down the tr atment <br /> level. Regarding Southport and limited capacity, Mr. Gregg recommended that existing plants <br /> treating to 10 work at their peak and when reaching their design life, compare costs to determine <br /> if it should be upgraded or pumped to another facility that would treat to 3 mgfL. Mr. Klenert <br /> inquired about updating systems and them-impact to residents and'Mr. Gregg responded that <br /> plants could be unproved while receiving flow. Plants with multiple trams, such as New <br /> Seabury and Willowbend, would be easiest to expand and i <br />