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L .w <br /> September 9, 2005 <br /> NOA Project Number: E05112A <br /> LDetails of the percolation tests are summarized in Table 6. <br /> Table 6. <br /> Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test <br /> Date Tested Test Depth(ft) (minutes/inch) Duration Comment <br /> �.. P-C shallow,8-30-05 3.4 7.14 4-hr Satisfactory percolation rate <br /> (Parcel C) <br /> P-D shallow,8-30-05 3.0 5.68 4-hr Satisfactory percolation rate <br /> Panel D <br /> Note: A satisfactory percolation rate for a"shallow'test is less than or equal to 60 minutes per inch. <br /> 6.7 Discussion of Percolation Test Results <br /> 1 The soils within the sewage disposal areas of the proposed parcels that are within San Joquin County <br /> have demonstrated a satisfactory percolation rate in accordance with the requirements of the EHD. <br /> The soils of the Site appear to be suitable for a standard septic system. <br /> L 6.8 Discussion of Septic System Sizing <br /> L Septic system construction should follow the San Joaquin County On-Site Wastewater Disposal Standards <br /> where applicable. <br /> 7.0 CONCLUSIONS <br /> L In summary, satisfactory percolation rates of the soil were achieved in the proposed septic disposal <br /> areas of the Site. The septic disposal areas of the proposed parcels appear suitable for a standard <br /> septic system. <br /> LNo ground water was encountered at a depth of 8.5 feet on August 29, 2005 at on the subject <br /> property,or in any of the percolation test borings drilled on the property. The on-site water well was <br /> tested for nitrate and DBCP. DBCP was not detected in the water sample,however Nitrate was <br /> detected at a concentration of 44.8 mg/L-NO3. The Nitrate concentration in the well water is slightly <br /> below the maximum contaminate limit from drinking water of 45 mg/L-NO3.We recommend <br /> L periodically testing the well to determine if water quality is within drinking water standards.You <br /> should contact the EHD for more details regarding health issues and repair/replacement options if <br /> necessary. <br /> L <br /> 10 <br /> "044 <br /> L <br />