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Sftpe V <br /> VI . SOIL PROFILE AND PERCOLATION TESTS <br /> Two test holes were excavated to depths of 3 . 0 feet in the <br /> areas shown on the percolation test result sheet (see Appendix) . <br /> to The purpose of the test holes was to determine percolation rates <br /> in these areas. Holes were prepared in accordance with County <br /> standards . As evident from the result sheet, this soil is more <br /> than adequate for conventional septic systems . <br /> Generally the surface soils consisted of a sandy loam by <br /> visual inspection. As shallow percolation tests proved adequate <br /> for conventional septic systems , no further soil exploration was <br /> necessary. <br /> As previously mentioned, the test holes were prepared in <br /> accordance with County Standards . A four hour test was performed <br /> on the homesite parcel with a percolation rate of 7 inches per <br /> hour measured. On the remainder property, a one hour test was <br /> performed with a percolation rate of 15 1/2 inches per hour. <br /> This one hour test is all that the County requires due to the <br /> } rapid percolations initially measured. Both tests were witnessed <br /> �.• by a County health official . <br /> VII . CONCLUSION <br /> Based on the results of the percolation tests, the soil <br /> profile, and the performance of the septic system on the <br /> property, it is Dillon &. Murphy' s opinion that the new homesite <br /> resulting from the proposed parcel split of the subject property <br /> is suited for the construction of a typical on site sewage <br /> La disposal systema The proposed system, however, should be. <br /> properly designed and installed according to current San Joaquin <br /> County criteria. <br /> twot <br /> It should be noted that the location of each of the <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 /> a.. accurate of other locations . <br /> Based on the depth to ground water in the area, and the <br /> size of the proposed parcels , it is our opinion that the <br /> installation of the proposed septic system, if properly <br /> installed, should not adversely affect the quality of the ground <br /> water in the area. <br /> 2 <br />