Laserfiche WebLink
VI. SOIL PROFILE AND PERCOLATION TESTS <br /> rOne 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 rates 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 /> F Soils lithology in the general area of the test holes consisted of a loam. As a <br /> l. 1 shallow percolation test proved adequate for a conventional septic system, no <br /> further soil exploration was necessary. <br /> `' A copy of the Soils Classification Map prepared by the U.S. Department of <br /> Ag Soil Conversation Service is included in the Appendices. Their map classified <br /> the soils as Columbia fine sandy loam. Due to the classification, there should be no <br /> `.4 potential problems or special engineering required on future septic systems. <br /> FOne percolation test was performed in a hole with 8 inch in diameter by 42 <br /> y 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 b 3 <br /> a 4 hour test. The last half hour of the test reading for Parcel 1 was witnessed by <br /> a County Health Official and the test data obtained is enclosed in the Appendix. <br /> Parcel Number Percolation Rate 6"o <br /> 1 15.00 minutes/inch <br /> VII. GROUNDWATER <br /> A Groundwater test was performed on the water faucet located by the office <br /> building on the adjacent property (A.P.N. 091 -350-04). The well was tested for <br /> nitrates and DBCP. The samples were taken by Mike Toy of Dillon & Murphy and <br /> L,. driven directly to Precision Environ-Tech. Water was taken from the faucet at the <br /> office. The results from the test can be found in the Appendix. The results did not <br /> yield any reason for concern regarding ground water in the area. <br /> VIII. CONCLUSION <br /> 4 ' Based on the results of the percolation tests and the soil profile, it is Dillon & cv, -) <br /> Murphy's opinion that the existing homesites resulting from the proposed parcel <br /> split of the subject property are suited for a typical on-site sewage disposal system. C(o•a) <br /> The proposed system however, should be properly designed and installed <br /> according to the current San Joaquin County criteria. <br /> F. <br /> 2 <br /> f C:10210717921 N. Podesta Lane SOILS REPORT 110503 <br />