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The topography of the dairy is comparatively flat as illustrated on the attached United States Geological Survey (USGS) map. It may be assumed that City of Tracy water and sewer will not be installed in this area for decades, if ever. A review of Application Permits on file at the San Joaquin County Environmental Health Department reveals there have been two Applications for Repairs/Additions in the one-half mile diameter study area(the microfiche printer was broken, so no copies are available.) The first application was for a new system to be added to an old septic system on 11/20/63 at Arbor and Paradise Roads. The second application was for a repair at 7680 West Arbor on 418187. This number of repair applications can be considered somewhat excessive for the study area, given that the housing density is extremely sparse and indicates the surface and subsurface soils are not overly conducive for shallow long-term effluent percolation. B. SOIL PROFILES AND PERCOLATION TEST RESULTS Information on the surface soil characteristics can be found in the USDA Natural Resources Conservation Service Soil Survey of San Joaquin Coun . The nutrient application soils consist predominately of Merritt silty clay loam (#197) with Willows clay (#274) in the southwest half of the Beffa property and Capay clay (#118) in the approximate southeast half of the Beffa property. All five proposed parcels were perc tested, however as referenced, only parcels 2 and 3 will have new septic systems installed. Although the Soil Survey suggests the underlying soil on parcels 2 and 3 are the same or similar, there was a visible and tactile difference between the two soils, with parcel 3 containing almost twice the clay content of parcel 2, based upon laboratory analysis. The sandy loam soil type of parcel 2 is more conducive for long-term septic effluent management than the loam soil type observed on parcel 3. The underlying soil profile down to perc test depth of approximately 40 inches is found on the Field Percolation Teat; Forma, and the in the chart below. 1. SOIL ANALYTICAL TEST RESULTS Both soil physical characteristics and soil chemical parameters were examined for the Nitrate Loading Study. As illustrated below, soil samples were retrieved from the respective depths as noted. The attached Soil Analysis Reports denotes the samples as 38 IN, 8 FT, and PAR 3. Analyzed constituents relating to nitrate loading include the organic matter content of the soil, pH, Cation Exchange Capacity (CEC),the nitrate-nitrogen(NO3-N) content. Of significance and interest were the nitrate-nitrogen concentrations. Parcel 2, in the location where the soil and groundwater samples were taken, was and is being farmed,previously in corn and now in winter wheat. The soil nitrate-nitrogen test results reveal a high concentration of 38 ppm and 46 ppm ppm NO3-N, at the 38 inch depth and 8-foot depth, i respectively. This nitrate-nitrogen concentration is typical of agricultural land that is intensely farmed. The soil sample from the approximate 40-inch depth from parcel 3 indicates a much lower nitrate-nitrogen concentration at 3 ppm NO3-N. The area where this sample was retrieved had not been farmed for several months. Therefore,the fine-grained soil structure of this soil, as referenced above, has apparently created favorable conditions for de on alon with ieachin . 4. j Chesney Consulting i