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water elevation is approximately 48 to 55 feet below mean sea level; ground water flows predominantly toward the east or southeast at a rate of approximately four to seven feet per mile in the vicinity of the Site. Given that the ground elevation of the Site is approximately 40 feet above mean sea level, the depth to water below the Site is estimated to be 88 to 95 feet, depending on the season. Potential Ground Water Contamination Issues The Soil Suitability Study is not intended to be an investigation into ground-water contamination sources, and no such investigation was conducted. Many sources can contribute to ground water contamination, including leaking underground storage tanks, agricultural activities, dairies, septic systems, and storm water infiltration. Agricultural activities and the use of septic systems in the area are known ground water contamination sources with the potential to impact the Site. Live Oak reviewed the EHD's Water Well Data Table dated March 10, 2009 for nearby addresses that have been tested for nitrate and dibromochloropropane (DBCP), common ground-water contaminants in San Joaquin County. Three wells were identified within approximately half of a mile of the Site. All three of the wells had been tested for nitrate; it was detected in all three, at concentrations of 4.2 to 13.7 mg/L-NO3. Only one of the wells had been tested for DBCP; it was not detected. The Maximum Contaminant Level (MCL) set by the US EPA for nitrate as NO3 is 45 mg/L (10 mg/L-N); the MCL for DBCP is 0.2 ug/L. On-Site Wells No wells are currently located on the Site, and no wells are proposed. No well permits were identified for the Site at the San Joaquin County Environmental Health Department. Water Sample No water sample was collected as part of this investigation. Soil Profile and Geologic Information The Site is depicted on the Preliminary geologic map of Cenozoic deposits of the Bellota Quadrangle, California (Marchand and Bartow, 1979). The Site is depicted along the boundary between two map units, the Modesto formation upper and lower members. The upper member is described as "foothill-derived alluvial silt, clay and minor sand forming terraces, upper fans, and following distributaries across lower fans; abundant volcanic detritus." The lower member is described as "basin alluvium derived LOGE 1847 Page 3