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i V Soil Suitability Study 4 Two (2) basic soil layers were found in excavating to the 8- foot depth. From the ground surface to a depth of 1 . 0 foot , the soil was noted to be a gray loam. From 1 .0 ' to 8 .0 ' below the ground surface, the soil was noted to be a reddish-brown sandy loam. A noteworthy change in the nature of the soil within the 7 . 0 reddish-brown sandy loam layer was noted at a depth of 3 ' 06" below the ground surface. At that depth the character of the soil changed from a dry rather loose, readily excavated material to a dry and hard material making it too difficult and impractical with the hand tools being used in the digging to excavate to the full 10-foot depth. This information is shown graphically on the attached "Field Percolation Data Sheet" . The University Of California , College Of Agriculture, Agricultural Experimental Station, Berkeley, California publication entitled "Soils Of San Joaquin County , California" , by Walter W. Weir , indicates the soil on the subject property to be on the borderline of two different soils listed as ( 1 ) Hanford Sandy Loam and (2) San Joaquin Sandy Loam (Deep) . I refer to the soil as two basic types , ( 1 ) Gray Loam and (2 ) Reddish-brown sandy loam on my "Field Percolation Data Sheet " . Percolation Tests : Two (2 ) percolation test holes , one ( 1 ) on Parcel No. 1 and the other on Parcel No. 2 , were excavated to about a 3-foot depth. The specific locations of the two ( 2) percolation test holes are shown on the attached "Tentative 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 June 17 and 18 , 1993 , two ( 2 ) percolation tests were performed on the subject property under my direction in conformance with the San Joaquin County Public Health Service, Environmental Health Division regulations and the San Joaquin County Ordinance Code Standards . Percolation Test. Hole Nos . 1 and 2 resulted in the percolation rates and determinations shown on the attached "Field Percolation Data Sheet" and are tabulated as follows : Parcel No. Test Hole Percolation Rate Minimum Usable No. (Minutes Per Inch) Disposal Area (Square Feet 1 1 15 .0 8 , 000 2 2 8 . 0 6 ,000 Michael and Elizabeth Tax MS-92-190 , Parcel Nos . 1 & 2