SU0006536 SSNL - Laserfiche WebLink

Home Browse Search

New Moose Lodge Soil Suitability Study Page 4 of 9 Our Project Number: E07175A November 5, 2007 The repair permits are primarily for the installation of additional leach lines and seepage pits. 3.7 Expected On-Site Maximum Septic Tank Usage Maximum expected usage on the Site would be for the proposed sportsman's club. Septic system design should be based on the On-Site Wastewater Disposal Standards or other engineering recommendations. 4.0 GROUND WATER INFORMATION 4.1 Ground Water Depth and Gradient The San Joaquin County Flood Control and Water Conservation District (1998 and 1999) ground water depth and elevation maps were reviewed to determine the ground water levels near the Site. The Fall 1998 and Spring 1999 maps are the most current official maps available from the County. According to these maps (Plates 3-6), ground water lies between 40 and 50 feet below ground surface and flows at a gradient of about 10 to 13 feet per mile to the east in the vicinity of the Site. It should be noted that the ground-water gradient is somewhat uncertain in the area due to recharge areas on either side of the Site. No ground water was encountered by the staff of Neil 0. Anderson & Associates, Inc. during the drilling to a depth of 5.80 feet on October 29, 2007. �4.2 Potential Ground Water Contamination Issues Identifying potential ground-water contamination sources was not part of the scope of work for the soil suitability study. Phase I and II Environmental Site Assessments previously prepared addressed this issue (NOA, July 9, 2007). No recognized environmental conditions were identified on the Site by these investigations, with the exception of the potential for groundwater contamination resulting from proximity to the adjacent unlined winery wastewater ponds. Potential ground-water contamination can occur from a number of sources which often include leaky underground storage tanks, agricultural activities, dairies, septic systems, and storm water infiltration. Agricultural activities and the use of septic systems in the area should be considered potential ground-water contamination sources. 4.3 Water Sample Location One agricultural well exists on the Site. One well permit which appears to refer to this well was found during file review at EHD on October 26, 2007. The address on the permit is 3830 East Woodbridge Road; it is dated 1994. The agricultural well is not operational at this time; the client has retained a contractor to perform the repairs. Once the well is operational, a water sample will be collected, and the results will be submitted in a separate letter. ,044 902 Industrial Way-Lodi,CA 95240-209.367.3701 -Fax 209.369.4228 02007 Neil O.Anderson&Associates,Inc