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A GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> AND"44 A S SOC 1 A T E S INSPECT;ONS a TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TEVSION DESIGN <br /> February 28, 2006 <br /> NOA Project Number: E05091B <br /> Transmitted by Fax: (209) 464-0138 cc: Ralph.Renna <br /> Lisa Medina,Land Use Program. <br /> San Joaquin County, Environmental Health Department <br /> 304 East Weber.Avenue,Third Floor <br /> Stockton,California 95202 <br /> RE: Soil Suitability Study <br /> Delta Land, LLC <br /> 651 W. Sargent Road. <br /> Lodi, California 95242 <br /> ]Dear Lisa: <br /> Here are the co:ttected water sample constituents frona the above SSS.The DBCP level was <br /> mistakenly recorded in the previous report as being,"non-detect."The DBCP level should bx,c <br /> been recorded in the report as being 0.34 ug/L;above the maximum conta:rinant level(MCL" of <br /> 0.2 ug/L set by the United States EPA..Please see the following sections for a more detailed <br /> description of the water sample cozistituents. <br /> 4.4 Water Sample Constituents <br /> The water sample wars analyzed for nitrate and DBCP. DBCP was detected in the water sample at <br /> 0.34 ug/L,above the maximum contaminant level(MCL) of 0.2 ug/L set by the United States EPA. <br /> Nitrate was found at 10.9 m.g/TrNO3t below the maximum contaminant level(MCL) of 45 ;n /L- <br /> NO3 set by the United States EPA.The analytical reports prepared by Precision Envito-Tech can be <br /> found.in the appendix of this report <br /> Well construction, seals, age and depth of the well scteem may play significant part in assessing the <br /> 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 of the condition of the <br /> aquifer. Essentially,the water sample concentration approximately indicates the constituent <br /> concentration level of the aquifer from wbich the well is dtai,i . It is Neil 0. Anderson and <br /> Associate's opinion that,in,general,neat surface aquifers are zz�Ore likely to have elevated <br /> concentrations of.Nitrate and DBCP than the deeper aquifers. However the contarr-mant <br /> concentration of on.e aquifer cannot give any indication as to the concentrations of any other aquifer <br /> regardless of proximity. <br /> LODI M SACRAMENTO ■ MODEST O <br /> ENVIRONMENTAL DMSION 902 Tndn4tlal Way,l-odi.Califo tip 95240 ■2(T9.3G7.370� ■ 209369.4228 rax ■vmrw.rimndc:wn.com <br />