Laserfiche WebLink
f- <br /> Non wastewater: area of lawn, roofs, paved area to calculate what runs off. <br /> Tom asked if they will measure off the GIS naps? <br /> Yes,Mashpee information has closed polygons and paved areas and lawn it will show edge of treed <br /> area vs. Lawn). The assessors office has proofs of this no . It is a powerful tool. <br /> Sensitivity analysis: i.e. is it worth looking at roof runoff in a few ways if the nitrogen loading makes it <br /> insignificant. <br /> Toni asked if they would test some of the lawns in the area? <br /> S & W said lawns are a big source of nitrogen. Next to wastewater, fertilizer is second biggest <br /> contributor. It is something you can remediate. <br /> Brian said you have to be careful what number you use for leaching rate,there is a lot of debate. <br /> The beauty of GIS is you can apply any factor you want and see if it is relevant. <br /> S &W can give you existing loading based on GIS database then Dr. Howes calibrates his model to <br /> develop an existing level that will be allowed-the critical nitrogen loads. <br /> The target loading for the embalmment and sub watershed goes back into GIS data base and S & W <br /> looks at various technology and management plans to create nitrogen reduction alternatives. Dr. <br /> Howes then plugs them into his model to verify and fine tune it. <br /> 'fora asked if they will know if doing something in one part of the watershed will be preferable to <br /> another part of the watershed? r. Howes said yes. <br /> Nate said the cost effectiveness is being analyzed at the same time. <br /> 2. How do you do the loading for non residential properties` <br /> S&W said they Vn'11 look at the number of seats for a restaurant, Boor space or grater usage, and make <br /> some judgment. <br /> How do you get impervious surface? <br /> From GIS, within a road ght of way there i a certain paved surface and then subtract off for <br /> shoulders. <br /> . Torn asked what their role will he in the presentations, Stearns and Wheler vs. Sever Commission? <br /> Nate said it is very clear in the RFP what meetings they are to attend and the project updates. They will <br /> provide information, similar to the examples they presented. The information will depend on the <br /> audience, including computer generated graphics,flip charts, naps showing work in progress. <br /> Worn said the Sewer Commission is looking for a salesman. <br /> S & W will work with the citizens advisory committee. The watershed management committee seems <br /> like the most effective CAC. <br /> Tom asked if MEPA would be comfortable with that group as a CC` <br /> Nate does not know if it is a diverse enough group. If you don't go special procedures, you can use any <br /> group. <br /> . Tom asked for an illustration of the level of detail for phases 4, 5 & 6. <br /> Nate described and gave examples of similar previous work for each phase. <br /> Phase I needs assessment report. They gave are example from Provincetown, Torn has a copy of <br /> Barnstaple's. They will look at all current treatment plants, nitrogen loading, identify regulations,, <br /> review all past studies. <br /> Phase 3: technologies and methods. They will look at them all and screen out some, <br /> 6 <br />