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Four percolation tests were performed in holes varying from 9 inches to 10 inches in diameter <br /> by 36 inches deep backfilled with 3 inches of gravel. The test hole on Parcel 1 was a 12" <br /> diameter hole tapering to a 9 inch diameter hole. The four holes were filled with water 24 <br /> - hours prior to running the test. The test holes for Parcels 1 and 2 were performed under a 4 <br /> hour test. The test hole for Parcels 3 and 4 were performed under a 1 hour test due to water <br /> remaining in the test holes after a 24 hour soaking period. The last half hour of the tests <br /> readings for Parcels 1 and 2 were witnessed by a County Health Official and the test data <br /> obtained is enclosed in the Appendix. The one hour test performed on Parcels 3 and 4 were <br /> not witnessed by a County Health Official. <br /> Parcel Number Percolation Rate <br /> 1 1 inch/hr. <br /> 2 1 inch/hr. <br /> -- 3 3 inches/hr. <br /> 4 2 inches/hr. <br /> VII. GROUNDWATER <br /> Groundwater tests were performed on the two existing wells. Their results can be found in the <br /> appendix. <br /> VIII. CONCLUSION <br /> Based on the results of the percolation tests and the soil profile, it is Dillon & <br /> Murphy's opinion that the existing homesites resulting from the proposed parcel split of the <br /> subject property are suited for a typical on-site sewage disposal system. The proposed system, <br /> however, should be properly designed and installed according to the current San Joaquin <br /> — County criteria. <br /> It should be noted that the location of each of the percolation tests was chosen near the <br /> existing disposal field. <br /> Based on the depth to ground water in the area, and the size of the proposed parcels, it <br /> is our opinion that the installation of any new proposed septic systems, if properly installed, <br /> should not adversely affect the quality of ground water in the area. <br /> 2 <br />