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vacuum sewer, STEP systems and grinder pumps, as well as gravity sewers, at the next meeting. <br /> Commissioners discussed Provincetown's sewer system and the recent rupture in their vacuum line. <br /> Barnstable uses a vacuum system, grinder pump and gravity system in their sewer system. The Chair <br /> noted that municipal staff must understand the operation of three different systems, which creates an <br /> added complexity. Mr. Kaplan added that Willowbend has used grinder pumps with success in their 7- <br /> 8 year old system which also uses a redundant pumping system- <br /> On-Site Denite Mapping <br /> Tom Mayo added 31 missing denite systems to the map. The sites are denoted with a dot on the <br /> centerline of the street since the mapping is based on the street address and not the map and parcel. <br /> Mr. Mayo is attempting to convert the information to map and parcel. Subdivision cluster systems are <br /> also represented on the map where the Planning Board has required developers to install denite <br /> systems. It was questioned why the information was significant and the Chair responded that when <br /> designing a system, it may be possible to exclude neighborhoods with existing denite systems. <br /> Additionally, it is important to be aware of those residents who have already installed a costly system <br /> in the event that they are then asked to tie in to another system and pay a betterment fee. Mr. Klenert <br /> questioned payment for the Town's system but it was suggested that financing of the sewer system be <br /> pursued at a later date. <br /> Project Planning Base Map <br /> The revised map was provided to Commissioners and illustrates the following: green represents <br /> Conservation areas; red are potential discharge sites; red cross hatched areas have an MMR easement, <br /> but may allow sand filter beds; blue represents discharge areas; blue dots represent the water district <br /> wells; red dots represent the denite systems; green lines denote Zone 2 recharge areas of public water <br /> supply wells; shades of blue represent the watersheds; shades of brown show privately sewered areas <br /> and red areas at Willowbend are the fairways which are being considered for discharge. The Chair <br /> highlighted new possible discharge locations on the map in the areas north of Johns and Ashumet <br /> Ponds. Mr. Kaplan suggested that a series of meetings be planned to discuss discharge sites. The <br /> Chair noted that the Selectmen have authorized exploratory work on the 14 acre potential discharge <br /> site adjacent to the Transfer Station but that the state archeologist has required an intense survey and <br /> more information before moving forward. Jeff Gregg of GHD reported that the Tribal Council was <br /> being contacted. <br /> Upon the request of Mr. Klenert,Mr. Gregg described what makes the Transfer Station site amenable. <br /> Mr. Gregg reported that the site requires evaluation which involves the installation of infiltration <br /> basins and monitoring wells in order to analyze how the site accepts water. An archeological study has <br /> been required and the Tribe has been contacted at the request of the State. Paperwork will be <br /> submitted to the State to assess whether or not the plan is sufficient to evaluate the site. Mr. Gregg <br /> noted that the State could require a more intensive study. Mr_ Gregg further stated that field data and <br /> other information will be collected and USGS information will be used to develop a model to <br /> determine suitability of the site. The site has been considered because it is town owned land despite <br /> being located in the watershed. Mr. Gregg noted that it is difficult to locate discharge sites and that <br /> options need to be kept open and the potential for the site becoming a pumping site or treatment plant. <br /> Mr. O'Hara questioned the possibility of using the MMR option to treat effluent. Mr. Fudala <br /> responded that the scenarios had been identified prior to the MMR option being discussed and that the <br /> MMR is a distant option that would not accept all of Mashpee's wastewater due to distance. It was <br /> noted that the Transfer Station site was not the best option which is why the Commission is in <br /> discussion with the golf courses and New Seabury. Mr. Gregg reminded the Commission that once the <br /> plan is developed, all sites need to be evaluated to determine their suitability before moving to <br /> 2 <br />