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There are three domestichnigation wells and one monitoring well on the subject property. It is our understanding that the well on the Kenworth property will serve the entire project. The following describes each well and the measured nitrate concentration. WELL CURRENT USE NITRATE LEVEL (12198) Kenworth well#1 Serves entire project 32 ppm NO3 Irrigation well#2 Fire Suppression 37 ppm NO3 East of retention pond. Domestic well#3 To be abandoned? 58 ppm NO3 South of main entrance. Monitoring well in Abandoned 315 ppm NO3 east retention basin. Nitrate concentrations for Well #2 and Well#3 were determined in previous investigations by Meinfelder, Inc. and Neil Anderson&Associates, Inc. An analysis of the Kenworth well and the monitoring well are included in this report. Test results from the basin monitoring well demonstrate the top aquifer has been severely impacted by nitrate. The test results of the wells also indicate impact and the fact that nitrate concentrations are increasing based on past analyses of the wells. In an effort to determine the source of the nitrate contamination in the underlying groundwater, the nitrogen isotope technique referred to as the Delta "N test was completed on the top aquifer and the underlying drinking water aquifers. These two water samples were obtained from the referenced monitoring well and the Kenworth well, respectively. Sampling protocol was done under U.S.E.P.A. guidelines. Test results indicate the sources to be possibly from 1.)Fertilizers 2.)the organic soil fraction and 3.) influence from sewage disposal systems. Studies by the investigators who developed this technique clearly show the Delta 'IN test can be used to distinguish between NO3 originating from animal sources and from fertilizer and/or natural soil organic matter. The technique cannot be used reliably to distinguish between fertilizer and natural soil organic matter. Additionally, the technique appears to be useful for distinguishing between on-site sewage disposal sources and animal waste. Further discussion and interpretation of the Delta "N test results will follow in the Conclusions section of this report. E. SURFACE WATER INFORMATION The stormwater detention basins (4 total) are the only bodies of surface water located on-site. The septic systems have been installed under permit and comply with applicable distance requirements from these basins. Consequently,there should be no impact from septic effluent. 4 Vaffey Aq search