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Bail Bond Business Page 7 of 13 <br /> Our Project Number: LGS080549 <br /> 3anuary 13, 2009 <br /> 1.6.6 Percolation Test Forms and Results <br /> The completed percolation test form is included in the appendix of this report. <br /> A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth; a <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 /> Summa of Percolation Tests. <br /> Test No., Percolation Test Percolation Rate Test Duration Comments <br /> Date Tested Depth (ft.) (minutes/inch) (see notes) <br /> P-1 (shallow) 3.35 2.94 4-hr Satisfactory perc rate <br /> 12-11-08 <br /> P-2 (deep) 5.25 3.57 4-hr Satisfactory perc rate <br /> 12-11-08 <br /> Note: A satisfactory percolation rate for a"shallow"testi s 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 /> 1.6.7 Discussion of Percolation Test Results <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 /> 1.6.8 Discussion of Septic System Sizing <br /> Septic system construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> Standards where applicable. Please see the Nitrate Loading Study for more information <br /> rega`iing septic system sizing. <br /> / 2.0 / NITRATE LOADING STUDY <br /> Because of concern regarding nitrate leaching into ground water from septic systems, a nitrate <br /> loading analysis was required by the EHD for the proposed development to measure the <br /> potential concentration of percolating effluent and rain fall over the long term. Where <br /> percolating effluent leaches into the ground, ground water quality may be impacted to some <br /> degree should the effluent reach ground water. <br /> .444 <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02008 Neil O.Anderson&Associates,Inc <br />