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r <br /> s GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> s <br /> AN D ASSOCIATES j INSPECTIONS & TESTING <br /> I � <br /> LABORATORY SERVICES 1 <br /> I I <br /> i POOL ENGINEERING <br /> I <br /> POST TENSION DESIGN <br /> i <br /> January 17, 2008 <br /> NOA Project Number: E07198B <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 /> Hieb Family Trust Property <br /> 10400 East Harney Lane <br /> Lodi, California <br /> Dear Ms. Mileski, <br /> The following discussion concerns the water sample constituent results from the well tested at the <br /> address 10400 East Harney Lane, Lodi, California. The well water sample was taken from a faucet <br /> on site by Mr. Jessen Welch of our office on December 12, 2007. <br /> Water Sample Constituents <br /> T e-watersamplg-was- . yzed for nitrate andBCP. DBCP was not dete d in the water sample. <br /> trate was found at 1.6 %L-NCI,, which is below low <br /> level (MCL) of 45 <br /> mg/.L 03 set nited States EPA. The analytical reports prepared by.F%-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 /> ANGELS CAMP • LODI - MODESTO RENO - SACRAMET <br /> _NO�•=W-AOT CREEK <br /> L 0 D 1 902 Industrial Way Lodi,CA--95240- 209:367.3701 • FAX 209-369.4228 • www.noanderson.com <br />