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F ATE LOADING STUDY FINDINGS DWATER INFORMATION (SSS§4.1,NLS§ 2.0,§2.1,§2.2, and §2.3.) NLS§ 2.1 Static water level as measured in the on-site well with an electronic water level meter was 70 feet from the top of the casing. The 1999 Lines of Equal Depth Map published by the San Joaquin County Flood Control District indicates the static groundwater depth to be approximately 65 feet. Lines of Equal Elevation Maps from 1993, 1996, 1997, 1998 and the most recent map published, 1999, found in Appendix 6, illustrates the groundwater flow to be in the following directions for each year listed. The groundwater depth is estimated upon the elevation of the property at -37 ft MSL. TABLE 4 YEAR GROUNDWATER ESTIMATED MSL ESTIMATED DEPTH DIRECTIONAL FLOW GROUNDWATER ELEVATION TO GROUNDWATER 1999 Southeast -25 MSL 62 Feet(-68 Feet-2005) 1998 East Southeast -29 MSL 66 Feet 1997 Due East -35 MSL 72 Feet 1996 Southeast -37 MSL 74 Feet 1992 South Southeast -39 MSL 76 Feet SSS§4.2, NLS§ 2.2,3.1 A 1994 study done by EHD regarding nitrate impact in domestic wells located in the Morada area revealed that the domestic wells all had comparatively low nitrate concentrations. This is contrary to what would be expected given: 1.) The high number of housing units on septic systems, 2.) The fact that the Morada area was under heavy agricultural production prior to housing development, and 3.) The fact that upgradient agricultural production, along with upgradient commercial facilities on septic systems such as a Chevron gas station still exists. SSS§4.3,4.4,4.5,4.6, NLS§ 2.3. Analysis of On-site Domestic Well The domestic well that served the on-site homesite was purged by opening the hose bibb that was located on the south side of the garage(shed). The water was run for 15 minutes before sampling. This ensured that aquifer formation water was sampled and not stagnant well water. A clear plastic bottle was used for the nitrate sample and three VOC amber bottles with preservative. The samples were placed in a cooled ice chest and subsequently delivered to A&L Western Agricultural Laboratories in Modesto, CA under the attached Chain of Custody. The nitrate concentration of the on-site well water was determined to be a low 9 ppm nitrate (as NO3), with the Maximum Contaminant Level (MCL) for nitrate(as NO3) is 45 ppm, or 10 ppm as nitrate- nitrogen(NO3-N). The well water also had a DBCP/EDB test result of BDL(Below Detectable Limits). Pae -7- Chesney Consulting