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6.6 Complete Percolation Test Form (including readings) was provided with REHS <br />verification signature. The rate was correctly calculated using the last reading. See Appendix <br />for Test Results Form. <br />Shallow Test(s) <br />TEST HOLE PERCOLATION RATE <br />1 (Parcel 1) 50 Min/In <br />2 (Parcel 2) 41.6 Min/In <br />*See Results in Appendix. <br />6.7 Discussion of any potential problems predicted and/or the need for an engineered or <br />alternative septic system. In this area, the soils are classified as Jacktone and Stockton Clay. Due to <br />this classification and percolation rate, a separate septic system for each unit with three leach lines, and <br />six 5 foot diameter seepage pits. Two seepage pits will be installed in series on each line, separated by 5 <br />feet. The seepage pits are provided to reduce the overall footprint of the leach fields to meet setback <br />requirements. <br />6.8 Discussion of percolation rates in relation to the type, size and location of future leach <br />fields needed at the site. Based on the results of the percolation rate and the soils profile, it is <br />Dillon & Murphy's opinion that the subject proposed parcels are suited for separate on-site sewage <br />disposal systems for each dwelling unit. The systems should be properly designed and installed <br />according to the above criteria and current San Joaquin County septic system standards. <br />Based on the depth to groundwater in the area, and the size of the proposed parcels, it is our opinion <br />on that the installation of any new proposed septic system, if properly installed, should not <br />adversely affect the quality of groundwater in the area. <br />7.0 CONCLUSION SECTION <br />The conclusions of this report are based on the information provided regarding the proposed <br />development, the use of the subject property, and the site conditions as they existed at the time we <br />excavated our test holes and performed the percolation tests. It was assumed that the test hole and <br />percolation test results are representative of the subsurface conditions in the general area. <br />Our services were performed, our findings obtained, and our conclusions proposed in accordance <br />with generally accepted engineering principles and practices. The warranty is in lieu of all other <br />warranties either expressed or implied. Test findings and statements of professional opinion do <br />not constitute a guarantee or warranty, expressed or implied. <br />0,,pFESS/p4, <br />URA �2 <br />� � 2 <br />LU m <br />No, 4527 n� <br />� az <br />. o <br />6'1Vt1. <br />2 <br />Joe Murphy <br />R(Ck 45277 <br />