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////APEX "t <br /> 03 OCT —3 PH 2: 34 11244 Pyrites Way•Gold River,CA 95670 <br /> E N V I R 0 T E C H , I N C . Phone 916.851.0174• Fax 916.851.0177•Toll Free 1.800.242.5249 <br /> September 30, 2003 <br /> Margaret Lagorio <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Piping Upgrade - Soil Sampling Results Report <br /> Tracy Safeway <br /> 1987 West 11`h Street, Tracy, San Joaquin County, California <br /> Apex Job #: 17I1,01.008 <br /> Dear Mr. Carruth: <br /> On September 22 through 24, 2003 Apex Envirotech, Inc. (Apex) personnel supervised the <br /> product piping upgrades performed by Fillner Construction Company, Inc. of West Sacramento, <br /> California at the above-referenced property. <br /> The former product piping was located approximately 2-feet below grade surface (bgs). Apex <br /> personnel hand augured angle borings to a total depth of approximately 3.5-feet bgs and collected <br /> soil samples from beneath the former product lines in native soil. Soil sample locations were <br /> selected by a representative of the San Joaquin County Environmental Health Department <br /> (SJCEHD). Apex personnel noted no evidence of odors or soil staining during field activities. <br /> All of the soil samples were collected in accordance with Apex standard operating procedures <br /> included as Attachment I and transported under chain-of-custody documentation to Kiff <br /> Analytical, LLC of Davis, California, a State-certified analytical laboratory. The samples were <br /> analyzed for: total petroleum hydrocarbons as gasoline, benzene, toluene, ethylbenzene, total <br /> xylenes, methyl t-butyl ether, di-isopropyl ether, ethyl t-butyl ether, t-amyl methyl ether, and t- <br /> butanol by EPA Method 8260B. It should be noted that due to angle methodology used to <br /> advance the borings, several soil samples were labeled as being collected at 5.5-feet bgs, <br /> although actual total vertical depth bgs was 3.5-feet, as witnessed by the SJCEHD representative. <br /> All soil samples were below laboratory detection limits for all of the constituents listed in the <br /> analyses above. The laboratory analytical results are summarized in Table 1 (Attachment II). A <br />