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i <br /> I <br /> i <br /> VI. SOIL PROFILE AND PERCOLATION TESTS <br /> One test hole was excavated to a depth of 3.5 feet in the area of the <br /> ' homesite. The purpose of the test hole was to determine percolation rate in this <br />' area. For approximate location of the test hole, see the Tentative Parcel Map in the <br /> Appendix. The hole was prepared in accordance with County Standards. <br /> Generally the surface soils consisted of a loam. As shallow percolation tests <br /> proved adequate for conventional septic systems, no further soil exploration was L <br /> necessary. <br /> One percolation test was performed in a hole with 8 inches in diameter by 42 <br /> inches deep backfilled with 2 inches of gravel. The one hole was filled with water <br /> 24 hours prior to running the test. The test hole for Parcel 1 was performed under <br /> a 4 hour test. The last half hour of the tests readingfor Parcel e 1 were witnessed <br /> by a County Health Official and the test data obtained is enclosed in the Appendix. <br /> Parcel Number Percolation Rate <br /> 1 30 min Jin. <br /> VII. GROUNDWATER <br /> A Groundwater test was performed on the westerly adjacent propertywell. <br /> The results can be found in the appendix. <br /> VIII. CONCLUSION <br /> Based on the results of the percolation test and the soil profile, it is Dillon & <br /> k = Murphy's opinion that the existing homesite resulting from the proposed parcel split <br /> of the subject property is suited for a typical on-site sewage disposal system. The <br /> proposed system, however, should be properly designed and installed according to <br /> w ' the current San Joaquin County criteria. <br /> Based on the depth to ground water in the area, and the size of the proposed <br /> parcel, it is our opinion that the installation of any new proposed septic system, if <br /> properly installed, should not adversely affect the quality of ground water in the <br /> area. <br /> 2 <br /> CA0251%SOILS REPORT 112202 <br />