10/18/2011 SEWER COMMISSION Minutes

Home Browse Search

4 M Mr. Gregg stated that the general approach for option I A would include the following: focus on directing the flow to Rock Landing and New Seabury, recharge some flow from Barnstable, Falmouth and Sandwich outside of the watersheds,-utilize existing treatment locations, add new treatment locations, expand some treatment facilities and maintain some existing I As, such as the Nitrex system in Sconset Village, Mr. Gurnee inquired about the number of I A systems in Mashpee and Chairman Fudala responded that there were over 300, more than any other town on Cape. The Chair noted that here were two additional subdivisions that were required to be 100%I A to include Equestrian Way and Anthony's Way. The Chair will forward the information to Mr. Gregg and recommended mfg up a large map. lir. Gregg noted that there may be little change in concentration over a small-flow, but since.the IIA systems were in place they could be considered in future planning. Mr. Gregg noted that the primary discharge site would be Rock Landing, with potentially New Seabury, Back Road Site, Site Transfer Station and the recharge.of existing facilities. Mr. Gregg discussed the content of the option 1 A table. Chairman Fudala inquired why four areas were lumped into one area. Mr. Gregg stated that Mashpee Commons had an existing treatment facility that was already treating to a high level. Mr, Gregg was attempting to determine the impact to the,scenario runs when recharging at a certain value and at a certain concentration. Mr. Gregg noted that there would be a cost difference if a new facility was built to treat at 10 mg/L. The Chair expressed concern about the direction of some of the flows and Mr-. Gregg responded that it was a balancing exercise. Mr. Gregg discussed specific details about building new facilities to treat+the yellow area and other areas and the increased costs of building to treat to 10 mg/L. Mr. Gregg stated that WF would be seeking water and concentrations and that the goal was to get as much flow to Rock Landing as possible. The Chair recommended that there be greater consistency between the two tables and that each area be identified separately. lair. Gregg stated that the table was intended to reflect which areas - would be directed to which discharge site. Results from the model would allow movement of the service areas, as needed. The Chair also expressed concern that Falmouth Bast, which was being treated, was not reflected on the table, and requested that it be included. In reference to the maps,Mr. Lyons recommended that roadways such as Great Neck North and South, Rt. 151 and Rt. 28 be included to serve as reference points for Mashpee residents. Mr. Gregg agreed to make the change for the final report. Mr. Gurnee inquired about the Way in which certain areas were identified as being treated outside the watershed and other areas being left on septic systems. Mr. Gregg responded that it was determined based on the nitrogen balance. Chairman Fudala inquired whether the Fair Share concept had been considered and IW Gregg responded that it was based on a general approach. Mr. Gurnee expressed concern that more properties remained on septic, suggesting that Barnstable would not be contributing 50% reduction. Mr. Gregg responded that he reviewed all Bows and loads and that this was a reasonable approach, adding that assumptions sometimes must be made in the absence of specific details. The Chair reiterated his preference that the tables reflect the Fair share responsibility. Mr. Gurnee and Mr. Gregg discussed the split and Mr. Gregg emphasized the reed to focus on what was being recharged to the watershed. 'There was also discussion about Sandwich and the creed to balance. Chairman Fudala referenced one existing and one proposed treatment plant located in Sandwich that did not appear i