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April 20,2005 <br /> NOA Project Number: E05022B <br /> Test No., Percolation Percolation Rate Test Comment <br /> Date Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> P-1 shallow,3/14/05 322 35.71 4-hr Satisfactory percolation rate <br /> _ (Parcel 3) <br /> P-1 deep,3/14/05 12.03 3.96 4-hr. Satisfactory percolation rate <br /> Parcel 3 <br /> 6. Note: A satisfactory percolation rate for a"shallow'test is less than or equal to 60 minutes per inch. <br /> fA satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> L 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation <br /> rate in accordance with the requirements of the EHD for the use of a standard septic system. <br /> 6.8 Discussion of Septic System Sizing <br /> 6. <br /> Septic System Construction should follow the San Joaquin County On-Sate Wastewater Disposal <br /> i Standards where applicable. <br /> L•, 7.0 CONCLUSIONS <br /> ly 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 the <br /> Luse of a standard septic system. <br /> No ground water was encountered in any of the borings drilled on the property.The on-site water <br /> well was tested for nitrate andpILCP. DBCP was non-detectable, and nitrate concentration in <br /> ground water was found to 1.09 g/L-NO3,which is well below the maximum con nt <br /> drinking water limit of 45 mg-Jt:-­N0 <br /> � 13. <br /> 8.0 LIMITATIONS / <br /> LThe 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 at the <br /> time we excavated out test holes and performed the percolation tests. It was assumed that the test <br /> Lholes and percolation test results are representative of the subsurface conditions in the general area. <br /> L <br /> L <br /> 10 <br /> L OA4 <br /> L <br />