SU0006957 SSNL - Laserfiche WebLink

Home Browse Search

Den Hartog Property Page 8 of 9 Our Project Number: LGS080514 May 23, 2008 Table 3 Summary of Percolation Tests Test Number Percolation Percolation Test Comments Date Tested Depth(ft) (min tes/inch)Rate Duration (see notes) P-1 (shallow) 3.30 4.03 4-hr Satisfactory 5-6-08 percolation rate P-2 (shallow) 3.21 7.14 4-hr Satisfactory 5-7-08 percolation rate P-3 (shallow) 3.25 7.58 4-hr Satisfactory 5-6-08 percolation rate P-4 (shallow) 3.19 17.86 4-hr Satisfactory v 5-6-08 percolation rate Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. ✓6.7 Discussion of Percolation Test Results The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation rate in accordance with the requirements of the EHD for the use of a standard septic system. ✓6.8 Discussion of Septic System Sizing Septic system construction should follow the San Joaquin County On-Site Wastewater Disposal Standards where applicable. �/7.0 CONCLUSIONS In summary, percolation rates that meet the minimum EHD standards were achieved in the proposed septic disposal areas of each of the proposed parcels. The parcels appear suitable for the use of a standard septic system. No groundwater was encountered in any of the borings drilled on the property. The on-site water well was tested for nitrate and DBCP. DBCP was not detected in the well water sample. Nitrate was found at 79.0 mg/L-NO3 which is above the maximum contaminant level (MCL) of 45 mg/L-NO3 set by the Environmental Protection Agency (EPA). This well should not be used for drinking water at this time. We recommend discussing repair options with the EHD. 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02008 Neil O.Anderson&Associates.Inc