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ON <br /> NEILO. ANDERSON E4VIRON MENTAL <br /> AND ASSOC IATES <br /> INSPECTIONS a TESTING <br /> LABORATORY SCRVIc�CS <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> January 7, 2009 <br /> NOA Project Number, I GS080551 <br /> Lisa Medina <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, CA 95212 <br /> Rei Well Water Sample Constituents <br /> Raverty Property <br /> 100 East Taddei Road <br /> Acampo, California <br /> E Dear Lisa, <br /> The following discussion concerns the water sample constituent results from the well tested at the <br /> address lab East Taddei Road, Acampo, California. The well water sample was taken from the <br /> spigot of the domestic well on site by Mr. Jessen Welch of our office on December 15, 2008. <br /> Water Sample Colnstltuents <br /> The water sample was.analyzed for nitrate and DBCP. DBCP was not detected in the water sample. <br /> Nitrate was found at 1.7 mg/L-NO3, which is below the,maximum contaminant level (MCL) of 45 <br /> mg/LTNO3 set by the United States EPA. The analytical reports prepared by FGL Environmental are <br /> 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 0. 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 /> i <br /> ANGELS CAMP - LODI - MODESTO - RENO - SACRAMENTO WALNUT CREEK <br /> L 0 D 1 902 Industrial Way - Lodi,CA 95240 - 209.367.3701 - FAX 209-369.4228 - u ww.flo�ndorson.aorn <br />