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quickly to treatment. There was a question whether DEP will judge Mashpee's ability to meet <br /> the TMDLs based on the modeling, but Mr. Walter was unsure and Mr. Lyons pointed out that <br /> the modeling was-hypothetical since nitrogen would continue to be added. Chairman Fudala <br /> noted that 0% reduction of the load in existing conditions should allow Mashpee to meet its <br /> target levels for ecological recovery. <br /> �-. Walter described the next scenario, where some areas would be severed with return flow <br /> removed along with existing and future wastewater treatment facilities. In phase 2, buildout will <br /> include additional sewerrng. Transfer modeling shows that there would be 0%of the total <br /> decrease in 6 years.. Phase 2.results in a slight increase, but treatment would be 'increased. <br /> Chairman Fudala inquired about the particular scenario that Mr. Gregg provided to Mr. Walter to <br /> complete the modeling. Mr. Gregg responded that the data was given to Mr. Walter prior to <br /> finalizing the 3 scenarios, although the modeling represented something similar to the scenarios. <br /> Mr. Walter noted that Shoestring Bay featured the biggest load and discussed the origins of the <br /> load inputs, <br /> Mr. Walter discussed dynamic watersheds and the-possibility of changing stresses, such as public <br /> water supplies, to change recharge ares, but use of current recharge areas for future sources <br /> could create inconsistencies that would affect the load. W. Walter provided and discussed the <br /> examples of Popponesset Creek'and oclway Bay. Chairman Fudala suggested that the modeling <br /> would assist in determining the appropriate-locations to'se ger, as well as to provide ars estimate <br /> of what should happen. lair. Walter discussed figures showing changes to the northern part of the <br /> watershed boundaries in the based upon the amount of pumping at the cooperative well sites. <br /> Chairman Fudala inquired about whether the model could be used to identify a concentrated area <br /> of nitrogen intersecting the shoreline in order to-utilize a PRB and Mr. Walter responded that it <br /> could. Mr. Lombardo recommended creating a dross-section to show the mass movement along <br /> the shore. W. Walter noted that it was difficult to figure out a mass or individual load number. <br /> Information that would be useful, and possible to acquire, would include the speed of a response <br /> and the scale of hove much was moving through the ponds. <br /> Chairman Fudala inquired about the availability of the model for testing purposes and Mr. <br /> Walter responded that the report would be reviewed and submitted for approval, with a modified <br /> regional model, and that the model would then be available to the public. Mr. Gobell inquired <br /> about calibration and Mr. Walter described the process. A&. Walter indicated that the model was <br /> in the public domain and that others would be able to complete the modeling, which could take <br /> 3-4 days to run on a server. Charman Fudala inquired whether the Cape Cod Commission had <br /> expressed interest in utilizing the model County gide,to which Mr. Walter responded that there <br /> had been no specific conversation regarding County use, Mr. Walter will keep the Sewer. <br /> Commission informed as to when the modeling would be available. <br /> GHD Proposals for SRF-Scope of Work Changes <br /> The Chair and A-. Gobell VAll be discussing the final draft with the Town Manager. The final <br /> spreadsheet has also been included. <br /> Status of GHD Tasks <br /> -Regina villa Associates Public Outmach Work-No update <br />