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1 .0 INTRODUCTION/PREVIOUS WORK <br /> ter This report is being submitted in response to a request by <br /> Western Stone Products to conduct a site investigation on <br /> the grounds of their Tracy Facility at 8181 W. 11th Street <br /> in Tracy. <br /> Elevated levels of diesel hydrocarbons were detect%d in the <br /> watar sample collected from the diesel tank pit. SOJI <br /> sampias collected from beneath the three tanks be1ng <br /> removed, did not detect hydrocarbons above method detection <br /> limits. <br /> t. p 2.0 DATA REQUIRED BY THE REGIONAL WATER QUALITY CONTROL BOARD <br /> 2. 1 Name and address of contact person: <br /> a. Contact Person: Bill Keller <br /> Western Stone Products <br /> ' P.O. Box 3171 <br /> o=,v Modesto, CA 95353 <br /> ( 209 ) 523-5615 <br /> 6� <br /> 2.2 Map showing site location relative to nearby landmarks: <br /> Ya(S <br /> The site location is shown on Figure 1. <br /> 2.3 Sketch of site: <br /> A site sketch is presented on Figure 2. <br /> 2.4 Layout of all tanks and piping systems properly labeled for <br /> "J content: <br /> Existing tank and pump locations are shown on Figure 2. <br /> 2. 5 Table summarizing preliminary sample data: <br /> Concentration (ppb) <br /> Sample Type B T X TPHG TPHD Pb <br /> ---------------------------------------------- <br /> #1 South end sail ND ND ND ND 4, 400 <br /> #2 Middle soil ND ND ND ND -- -- <br /> #3 South end soil ND ND ND -- ND -- <br /> #4 Water water 42 ND 130 -- 110, 000 <br /> B = benzene Pb = lead <br /> T - toluene ND = none detected <br /> X = xylenes -- = not analyzed <br /> TPHG = total petroleum hydrocarbons as gasoline <br /> TPHD - totai petroleum hydrocarbons as diesel <br /> 3 <br /> Laboratory reports are contained in Appendix I . <br /> 1 <br /> i <br />