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GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Fscalon,California 95320 <br /> Telephone:(209)838-9888 <br /> Facsimile:(209)838-9883 <br /> F�LIW [0 <br /> August 1, 2047 <br /> AUG 0 12 2-'007 <br /> Cf41WROil�l�^ENT HEALTH <br /> Ms. Lori Duncan !'E=iMIT/SCRiiICE <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton, CA 95202-3029 <br /> Subject: Groundwater Monitoring Well Installation and Soil Boring Permit Application <br /> Speedy Foods, 8200 North Highway 99,Morada, California(Figure 1) <br /> Dear Ms. Duncan: <br /> Ground Zero Analysis, Inc. (Ground Zero) is submitting this permit application and associated <br /> fee for the installation of three (3) additional groundwater monitoring wells and the advancement of <br /> one confirmation soil boring at the referenced site. <br /> The wells and the boring will be drilled, installed and sampled pursuant to the Workplan for <br /> Additional Subsurface Investigation dated May 11, 2007, which was approved in your letter dated <br /> that you <br /> July 3, 2007. In the aforementioned letter it states at y approve the "confirmation boring <br /> located near VW2 but request that it be placed near MW1 and SB2." Can you please clarify? We <br /> proposed the boring near VW2 because soil samples previously <br /> collected from the installation of <br /> VW2 were the most highly contaminated of those collected in the area of the former underground <br /> g y <br /> storage tanks (iJSTs). Note that the cumulative table of soil data included with the workplan <br /> inadvertently did not contain data from VW2. Please replace the table with the enclosed updated <br /> version. Your July 2007 letter also requests that the screened intervals on the new wells be reduced <br /> from the proposed 20 feet to 10-15 feet, which we accept. Figure 2 shows the approximate location <br /> of the proposed soil boring and Figure 3 shows the approximate location of the proposed <br /> groundwater monitoring wells. A check in the amount of $374 is enclosed to cover the permit <br /> i <br /> application fee. <br /> In your letter you requested the calculation we used to establish the mass of dissolved MTBE in <br /> shallow groundwater at the site. With reference to Figure 6 in the April 27, 2007, Quarterly <br /> f <br /> G:\GROUNDZEITULEBLTRG\permitcvT.doc <br />