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GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> AN D ASSOCIATES INSPECTIONS a TESTING <br /> LABORATIII¢¢O(�(�RRNNY SERVICES <br /> u u��g� ��H=510N DESIGN <br /> JUL 0 7 2008 <br /> June 30, 2008 ENVIRONMENT HEALTH <br /> NOA Project Number: LGS080518 PERMIT/SE <br /> F(ICES <br /> Rodney Estrada <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, CA 95212 <br /> Re: Well Water Sample Constituents <br /> Mary's Mini Mart <br /> 21850 East Liberty Road <br /> Clements, California <br /> Dear Rodney, <br /> The following discussion concerns the water sample constituent results from the well tested at the <br /> address 21850 East Liberty Road, Clements, California. The well water sample was taken from a <br /> spigot on site by Mr. Jessen Welch of our office on June 2, 2008. <br /> Water Sample Constituents <br /> The water sample was analyzed for nitrate and DBCP. DBCP was not detected in the water sample. <br /> Nitrate was found at 6.9 mg/L-NO3, which is well below the maximum contaminant level (MCL) of <br /> 45 mg/L-NO3 set by the United States EPA. The analytical reports prepared by FGL Environmental <br /> are attached. <br /> Well construction, seals, age and depth of the well screens may play significant part in assessing <br /> the levels of nitrate and DBCP in various aquifers. Without knowing specific details regarding well <br /> construction and condition, it would be difficult to accurately comment on the condition of the <br /> aquifer. Essentially, the water sample concentration approximately indicates the contaminant <br /> concentration level of the aquifer from which the well is drawing. It is Neil O. Anderson and <br /> Associates' opinion that, in general, near-surface aquifers are more likely to have elevated <br /> concentrations of nitrate and DBCP than the deeper aquifers. However the contaminant <br /> concentration of one aquifer cannot give any indication as to the concentrations of any other <br /> aquifer regardless of proximity. <br /> ANGELS CAMP • LODI • MODESTO • RENO • SACRAMENTO • WALNUT CREEK <br /> LODI 902 Industrial Way • Lodi,CA 95240 • 209.367.3701 • FAX 209-369.4228 • www.noandersonxom <br />