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AWMAWCE L HEALTH <br /> THRAiMuLtS TEAM <br /> February 10, 1995 <br /> Mobil Oil Corporation Alton Project No. 30-0136 <br /> 3700 West 190th Street, TPT-2 <br /> Torrance, California 90509-2929 <br /> ATTN: MR. STEVE PAO <br /> SITE: FORMER MOBIL BULK PLANT 04-343 <br /> 500 EAST GRANTLINE ROAD <br /> TRACY, CALIFORNIA <br /> RE: QUARTERLY PROGRESS REPORT, <br /> JANUARY THROUGH MARCH, 1994 <br /> Dear Mr. Pao: <br /> This quarterly report presents the results of fluid level monitoring and groundwater sampling at <br /> the above-referenced site. On January 12, 1995, fluid levels were measured and groundwater <br /> . samples were collected in twelve monitoring wells. Groundwater samples were submitted to a <br /> state-certified laboratory for analysis, The results of the investigation are attached. Fluids <br /> recovered during sampling activities were stored onsite in labeled, Department of Transportation <br /> approved drums prior to transport by IWM, Inc. for offsite recycling at McKittrick Waste <br /> Treatment in McKittrick, California, <br /> ATTACHMENTS <br /> Figure 1: Ground Water Elevation Contour Map <br /> Figure 2: Dissolved-Phase Hydrocarbon Concentrations <br /> Table 1: Summary of Ground Water Sampling and Analysis <br /> Appendix: General Field Procedures, Official Laboratory Reports, and Chain of Custody <br /> Records <br /> This report was prepared in compliance with the requirements of the San Joaquin County <br /> Environmental Health Division. <br /> 30A Lindbergh Avenue <br /> Livermore,California 94550 <br /> (510)606-9150•FAX(510)606-9260 <br />