3/8/1999 SEWER COMMISSION Minutes

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u .r , MASHPEE SEWER COMMISSION MINUTES t MARCH 8. 1999 TOWN ALL Present: Toni.Fudala,Dennis Balzarini, John Cahalane,Dr. Brian Howes Meeting convened at 2:05 p.m. The Commission conducted a second round of interviews with SEA Consultants and Stearns and Wheler. Torn prepared a list of questions regarding their proposals and previously sent them to the firms so that they could respond at this interview. SEA CONSULTANTS I. Torn is still confused how SEA will develop the nitrogen loading calculations within the 160 planning zones accounting for seasonal fluctuations. The representatives from Normando responded. If the planning zone information is in digital form they can tabulate the loads for planing zones to be included in Dr. Howes" model. Torn asked where they will get the load information? They will use verified, land use based coefficients. They can be adjusted for information unique to Mashpee, including seasonality. Tom asked what they will apply the coefficients to' They will.be applied to town land use and Cape Cod Commission land use for adjacent towns. They will use best land use data available in digitized form. They use ARC view and ARC'View spatial analyst. Using 2 separate sets of tables is not a problem. Tom said the only land use map the town has in digital foam reflects the assessors designation land use codes as of 1994. It does not tell how many people live in a house. Large parcels not yet subdivided have to be accounted for as well as land which has been removed from development for open space. I ormando responded they will have to meet with Tom to discuss and incorporate the Town"s build out analysis. Worn only has that information in spreadsheet form, not digital.. The transfer has to be done by someone. Also the seasonal factors have to be accounted for. Nrmando thinks the two databases can be linked. Torn is nervous about this aspect of the proposal. If they adjust coefficients for seasonality, what size area will they use`? Normando said it depends on the land use. r. Howes said the crux of the issue is bow to introduce seasonality component. John suggested using assessors iforration, specifically personal property tax. r. Howes said water use records per dwelling that is on town water could be linked to this data base. That will generate flow data. Tom said it is critical to him that we get numbers right up front. From SEA's response, it seemed they don't understand why Tom is concerned about it. The point is for targeting tmpro ements,, choosing neighborhoods with the highest loads for improvement and ignoring the others. Nor ando said they will use spatial analysis to identify hot spots. They will know where the trouble is. Tom is concerned how they will know. He did not see much effort in that part of the proposal,there were few dollars allocated to that portion.of the proposal.. I k