3/15/2011 SEWER COMMISSION Minutes

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Chair inquired about the significance of the colors on the plan and Mr. Braginton-S mith noted that the 1 inch main was yellow, 8 inch was blue, 6 inch was orange and 4 inch was green. Santuit and Mashpee Fond area would also require expansion. The second proposal was developed ini October 2010 and included the possibility of utilizing New Seabury with complete and comprehensive sewering.- The plan did not include Secon ett and Monomoscoy.Islands, which presents some challenges, including the need to go through F'alinouth. The Chair inquired about the possibility of going under the liver and Mr. Braginton# Smith agreed that it would be one option but that there were other considerations. Mr. Bra inton-Smith also suggested the possibility of utilizing River Road and sever from the station above or create a small vacuum station on Seconsett.1sland. Mr. Braginton-Smith added that a small vacuum station could be built to provide a vessel pump out station for the marina a well as at New Seabury. Mr. Braginton-Smith summarized that their proposal provided for comprehensive sewering for the entre town that would include 61,200 connections and approximately 3,100 valve pits, 8 vacuum stations and could cost$5,00046,200 per connection. Mr. Bra inton-Smith provided copies of the proposals to the Chair and will forward electronic copies-for the other Commissioners- Mr. Lyons inquired whether the entire project proposed would cost $38 million and Mr. Braginton-Smith confirmed that it would. lir. O'Hara inquired whether the cost included connections to the home and Mr. Bragiton-Smith stated that it did not include the connection to the home but added that he hoped that the number of valve pits could be reduced. Mr. O'Hara asked about the estimated cost to connect t the home and Mr. raginton-Smith.responded that it would be approximately $3,500 for piping, decommissioning of the septic tank and the line t the valve pit. Chairman Fudala stated his hope that he would have received a proposal that would have matched the service areas determined by the Sewer Commission along with a cost breakdown. Mr. Braginton-Smith responded that he could modify the proposal and base it o,n the pink circled areas from the map. lam-. � Iarcelli inquired whether M-T' Braglnton-Smith's proposal took into consideration all of the existing wastewater treatment facilities and whether they would be connected to the system. Mr. Braginton-Snaith responded that pre-existing treatment areas were exempted from the proposal. -]E/One--Grinder Pump Imw Pressure System Ed Quann, F.R. Mahoney& Associates, reported that his company has represented the Environment One (E/One) sewer system for 30 years. Mr. Quann provided copies of the report and presentation to each of the Commissioners. Mr. Quann reported that he addressed six sites in Mashpee and examined the use of low pressure suer systems using Tae grinder pumps at the identified collection areas_ Mr. Quann stated that each home would have a pump and the piping would follow grade approximately 4 feet below grade at a constant flow and could go up or down as needed. The Force main would run to the street and would feature a shut off at the property line. Mr. Quann laid out the system in branches, beginning at the.end and running along to a collection site. Mr. Quann stated that each home would tie in to a conunaon force main in the street. Mr. Quann noted that the force main could start as a 2 or 3 inch pipe but could increase to a 10 inch pipe.. Among the collection areas examined, Mr. Quann assessed the Back Road d Site, Heritage Park Site, High School Site, Reeter Site, Neter Seabury and the Transfer Station Site. The cost estimate summary includes pump cost, pump installation cost(including electrical) and force 6