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[3] PROPOSED DEVELOPMENT OF THE SUBJECT SITE As referenced, it is proposed to divide a 53 acre parcel into a 51 acre Designated Remainder and a 2 acre Parcel 1. It is our understanding there is to be no development or improvements made to the Designated Remainder and no future development of Parcel 1. Any related septic system structures and the domestic well must comply with published "distance" requirements. [4] SOIL PROFILE AND PERCOLATION TESTING The predominate soil type from grade to 3 ft is a clay soil with a high organic matter content. The soil type changes to a light brown, silty clay at four feet. A hardpan layer was not encountered in the drilling procedures. The well logs illustrate there are intermittent clay layers between grade and the depth to drinking water aquifers. The perc test boring was set at four feet below existing grade to illustrate the depth effluent percolation or the "wetting front" that will occur in native soil. From the perc test results, it was determined this four foot depth produces acceptable percolation rates. Our percolation tests were conducted according to San Joaquin County Department of Environmental Health regulations. The Field Test Data Sheets can be found in the Appendix. The perc test was conducted on January 14, 1999 in the location specified on the Tentative Map. However,after this date, it was decided to change the lot line to the south of the hay shed. Although the perc test was not officially conducted on Parcel 1, it is our opinion there would not be significant soil changes in the short distance from the north side of the shed to Parcel 1. Secondly, there are no plans to build another structure on Parcel 1, where it would be prudent to conduct the test. Although the indigenous soil are clay, the comparatively fast perc rate obtained can be attributed primarily to the alfalfa roots at the perc test depth. Also the clay soil was moist which can promote faster perc rates. [5] LOCAL GROUNDWATER AND SURFACE WATER INFORMATION The groundwater,or the zone of saturation is located at approximately 8 ft below grade. There was no evidence of a perched water table condition during our perc boring procedures. The property is subject to the 100 yr flood zone A25 (Elevation 20)per flood insurance rate map, community panel No. 060299 0570 B, dated July 4, 1988. vaffey Ag P pearck