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L ' •• .. <br /> LNovember 8,2004 <br /> NOA Project Number: E0401 10A <br /> 1i �6.7 Discussion of Percolation Test Results <br /> L The soils within the sewage disposal areas of Parcels 2, 10,and 12 have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD. The soils of these parcels appear <br /> to be suitable for a septic system utilizing shallow leach lines and seepage pits. The soils of the <br /> remaining parcels were found to be suitable for an engineered septic system. As part of a separate <br /> Ldocument,our office has provided engineered septic system designs for the lots with failing <br /> percolation tests. <br /> L1✓6.8 Discussion of Septic System Sizing <br /> Septic System Construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> L Standards where applicable. Refer to the attached Nitrate Loading Study for a complete discussion <br /> of the necessary recommendations. <br /> L 7.0 CONCLUSIONS <br /> L ✓7.1 Signatures <br /> The signatures of the environmental professionals involved in the preparation of this report can be <br /> Lfound at the front of this package. <br /> 8.0 SELECTED REFERENCES <br /> LCrites, R.,Tchobanoglous, G., 1998, Small and decentralized wastewater management systems: <br /> McGraw-Hill series in water resources and environmental engineering, McGraw-Hill Boston <br /> Lfirst edition. <br /> Griffith,Stacey,Personal Communication October 1 and 28, 2004. <br /> LHantzshe N., Finnemore,E.J. 1992,Predicating Ground-Water Nitrate-Nitrogen Impacts. Ground <br /> Water,Vol. 30,No. 4. <br /> San Joaquin Community Development Department, 2004,www.co.san-joaquin.ca.us. <br /> San Joaquin County Environmental Health Department,2003, On-Site Wastewater Disposal <br /> 1 Standards: San Joaquin County Environmental Health Department, 304 E.Weber Avenue, <br /> 6. 3rd Floor, Stockton, California. <br /> L San Joaquin County Flood Control and Water Conservation District. Depth to ground water and <br /> ground-water elevation maps for Spring 1983, Fall 1998,and Spring 1999. Published <br /> Lbiannually, Scale: 1 inch = 2 miles. <br /> L 11 <br /> L. <br />