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..- <br /> ..r <br /> water at this location is approximately 120 feet . <br /> The residential well on the site was tested for <br /> Dib.romochloropropane (DBCP) and nitrates . The results are <br /> included in the appendix. <br /> VI. SOIL PRO]?ILE AND PERCOLATION TESTS <br /> Two test holes were excavated to depths of 3 . 0 feet in the <br /> areas of the proposed homesites . The purpose of the test holes <br /> was to determine percolation rates in these areas . For <br /> approximate location of the test holes , see the Terntative Parcel <br /> Map in the Appendix. Holes were prepared in accord1.tr1(--e with <br /> County standards . <br /> Generally the surface soils consisted of clay. The soil <br /> was classified based on a visual inspection . As shallow <br /> percolation tests proved adequate for conventional septic <br />■- systems , no further soil exploration was necessary . <br /> Both percolation tests were performed in 6 inch diameter <br /> by 36 inch deep test holes backfilled with two inches of gravel . <br /> Both holes were filled with water 24 hours prior to running the <br /> test. A four hour percolation test was performed and the last <br /> half hour of the test readings were witnessed by a county health <br /> Official and the test data obtained is enclosed in the Appendix . <br /> The results of the tests indicate that the soil at the Proposed <br /> homesite on Parcel 1 had a Propose <br />-' and the soil at thePercolation rate of 60 minutes/inch <br /> proposed homesite on Parcel 2 had a <br /> percolation rate of 60 minutes/inch. <br /> VII. CONCLUSION <br /> Based on the results of the percolation tests , the soil <br /> Profile, and the performance of the septic systems in the <br /> surrounding area, it is Dillon & Murphy ' s opinion t}iat the-) new <br /> homesites resulting from the proposed parcel split of the subject <br /> property are suited for the construction of a typical on site <br /> sewage disposal system. The proposed system, however, should be <br /> properly designed and installed according to current San Joaquin <br /> t,ounty criteria . <br /> It should be noted that the location of each of the <br />,. <br /> percolation tests were chosen as the most likely location for a <br /> disposal field . Although it is not anticipated that soil <br /> conditions vary greatly over the subject project , if the actual <br />_ location of a proposed disposal field varies significantly from <br /> the test locations , the test data should not be considered <br /> accurate of other locations . <br /> 2 <br />