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Nos . D1A, DIB, D1C, DID, DIE and D2 were drilled and are shown on the attached "Parcel Map" . Only Percolation Test Holes Nos . DID and D2 were formally tested and fully reported on. Percolation Test Hole Nos . DID and D2 from the ground surface to depths of 13 ' 11" and 19 ' 08" , respectively, the soil is a brown clay. At the 13 ' 11" and 19"08" depths layers of brown, sandy loam with a trace of gravel were encountered. Though not formally tested Percolation Test Hole No. D1C was similar in character to DID and D2 . From the ground surface to a depth of 22 ' 00" , the soil is a brown clay. At the 22 ' 00" depth a layer of brown, sandy loam with a trace of gravel was encountered. Percolation Test Hole Nos . DIA, D1B and DIE from the ground surface to a depth of 25 feet the soil is a brown clay. No water was encountered in drilling any of the deep percolation test holes to a maximum depth of 25 feet . The San Joaquin County Flood Control And Water Conservation Map entitled " "Lines of Equal Depth To Water Wells" dated Fall 1990 shows the water to be in excess of 110 feet below the ground surface. Percolation Tests : Only two ( 2) shallow percolation test holes were excavated to about a 3-foot depth and tested. These were Percolation Test Hole Nos . SIC and S2 . The location of these test holes are shown on the attached Parcel Map. Six ( 6) deep percolation test holes were drilled. These were Percolation Test Hole Nos . D1A, D1B, D1C, DID, DIE and D2 . Only Percolation Test Hole Nos . DID and D2 were formally tested and reported on. The location of all six (6) deep percolation test holes are shown on the attached "Parcel Map" . All percolation tests conducted were performed in accordance with the percolation test procedures outlined in the "Manual Of Septic Tank Practice" , published by the Department Of Health, Education And Welfare and the requirements of the San Joaquin County Public Health Service, Environmental Health Division. On September 18 and 19 , 1991 , and October 1 and 2 , three (3) percolation tests , two (2 ) shallow and one ( 1 ) deep and on October 1 and 2 another deep percolation test for a total of four (4) were performed on the subject property under my direction in conformance with San Joaquin County Public Health Service , Environmental Health Division regulations and San Joaquin County Ordinance Code Standards . Percolation Test Hole Nos . SIC, DID, S2 and D2 , for Parcel Nos . 1 and 2 resulted in the percolation rates and the determinations shown on the attached "Field Note Sheets" and are