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®n <br />® 0 <br />Lange Property <br />our Project Number: LGS080011 <br />February 28, 2008 <br />Page 8 <br />Test No., <br />Date Tested <br />Percolation Teion <br />Su78.62 <br />Depth (ft.)es/inch) <br />3.25 <br />Table 3. <br />Percolation <br />Rate <br />Tests <br />Test Duration <br />4 hrs <br />Comments <br />(see notes) <br />Satisfactory perc rate <br />P-1 Shallow <br />2-13-08 <br />P-2 Shallow3.34 <br />11.36 <br />4 hrs <br />Satisfactory perc rate <br />2-1-08 <br />P-3 Shallow <br />3,21 <br />13.9 <br />4 hrs <br />Satisfactory perc rate <br />2-12-08 <br />P-4 Shallow <br />3.23 <br />4 hrs <br />Satisfactory perc rate <br />2-12-08'`�� <br />/I <br />P-5 Shallow <br />3,21 <br />50 <br />/ 4 hrs <br />Satisfactory perc rate <br />2-1-08 <br />P-6 Shallow <br />3 Z7 <br />13.8 <br />4 hrs <br />Satisfactory perc rate <br />2-1-08 <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 />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 />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. <br />7.0 CONCLUSIONS <br />In summary, percolation rates that meet the minimum END 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 systema <br />No ground water was encountered in any of the borings drilled on the property. The on-site <br />water well was tested for nitrate and DBCP�CP-mss non-detectable, and nitrate <br />concentration in ground water was found to be�4�5 mg/L��3, which is well above the <br />maximum contaminant drinking water limit of 45 mg/L-Na3: This well should not be used for <br />drinking water at this time. We recommend discussing repair options with the EH. D. <br />902 Industrial Way • Lodi, CA 95240.209.367.3701 • Fax 209.369.4228 ©2008 Neil O. Anderson & Associates, Inc <br />