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!r1 Our Project Number: LES090550 Page 5 of 6 <br /> June 30, 2009 <br /> i <br /> 5.2 Percolation Test Forms and Results <br /> The completed percolation test form is included in the Appendix B of this report. A shallow / (� <br /> percolation test is defined b the EHD as being between 36 and 42 inches in depth; a <br /> p Y 9 <br /> satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. <br /> A deep percolation test is defined as being between 3.5 and 25 feet in depth; a satisfactory <br /> percolation rate for a deep test is 30 min/in or less. One percolation test must demonstrate a <br /> satisfactory percolation rate within the proposed septic system disposal field of each parcel to <br /> utilize a standard septic system. Details of the percolation tests are summarized in the table <br /> below. <br /> Table 3. <br /> Summary of Percolation Tests <br /> Percolation Percolation <br /> Test No., Test Comments <br /> Date Tested Test Rate Depth (feet) (minutes/inch) Duration [see notes) <br /> P-1 (shallow) 3.35 2.94 4 hours Satisfactory <br /> June 24, 2006 <br /> Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. <br /> A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD for the use of a standard <br /> septic system. <br /> Septic system construction utilizing leach lines and pits should follow the San Joaquin County <br /> On-Site Wastewater Disposal Standards where applicable. If cobbles prevent excavation of <br /> seepage pits, sumps should be used in their place. Due to the depth of groundwater, (130 feet) <br /> and the likely existence of fine-grained soils deeper, the impact to groundwater from <br /> percolating effluent is estimated to be low. <br /> 6.0 CONCLUSIONS <br /> In summary, percolation rates that meet the minimum EHD standards were achieved in the <br /> proposed septic disposal areas of each of the proposed parcels. The parcels appear suitable for <br /> the use of a standard septic system. <br /> No ground water was encountered in_any~of-the baring" s�drillea-�on-Y_ operty. The on-site <br /> water well was tested for nitrate anc_DBCP. Analytical results are forthcomifq <br /> We find the site suitable for development with the use of septic systems utilizing leach lines and <br /> seepage pits. <br /> 7.0 LIMITATIONS <br /> The conclusions of this report are based on the information provided regarding the existing and <br /> proposed development, the use of the subject property, and the site conditions as they existed <br /> 902 Industrial Way- Lodi,CA 95240.209.367.3701 -Fax 209.369.4228 ©2009 Neil 0.Anderson&Associates,Inc <br />