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Generally the surface soils consisted of sandy loam. Since shallow percolation <br /> tests proved adequate for conventional septic systems, no further soil exploration was <br /> necessary. <br /> The percolation test was performed in a hole 9 inch diameter by 36 inch deep <br /> backfilled with 2 inches of gravel. The hole was filled with water 24 hours prior to <br /> running the test. The test hole for Parcel 1 was performed under a 4 hour test. The <br /> last half hour of the test readings were witnessed by a County Health Official and the <br /> test data obtained is enclosed in the Appendix. The results of the test indicate that <br /> the soil at the homesite has a percolation rate as follows: <br /> Parcel Number Percolation Rate <br /> 1 6" /h r. <br /> VII. CONCLUSION <br /> Based on the results of the percolation test and the soil profile, it is Dillon & <br /> Murphy's opinion that the homesite resulting from the proposed parcel split of the <br /> subject property is suited for the construction of a typical on site sewage disposal <br /> system. The proposed system, however, should be properly designed and installed <br /> - according to current San Joaquin County criteria. <br /> It should be noted that the location of the percolation test was chosen as the most <br /> likely location for a disposal field. If the actual location of a proposed disposal field <br /> varies significantly from the test location, the test data should not be considered <br /> accurate of other locations. <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 a proposed septic system, if properly <br /> installed, should not adversely affect the quality of the ground water in the area. <br /> VII. LIMITATIONS <br /> The conclusions of this report are based on the information provided regarding <br /> the proposed development, the use of the subject property, and the site as they <br /> existed at the time we excavated out test hole and performed the percolation test. It <br /> was assumed that the test hole and percolation test results are representative of the <br /> subsurface conditions in the general area. <br /> 2 <br />