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APR 2 2 11993 <br /> OWGROUNDWATER ENVIRONMENTAL HEALTH <br /> HLD TECHNOLOGY INC. <br /> PERMIT/SERVICES <br /> � 4057 Port Chicago Highway,Concord,CA 94520(415)671-2387 <br /> FAX:(415)685-9148 <br /> April 14, 1993 <br /> Project No. 020203767 <br /> Mr. Bob Vasquez <br /> The Southland Corporation <br /> 5820 Stoneridge Mall Road, Suite 310 <br /> Pleasanton, California <br /> SUBJECT: First Quarter Monitoring and Sampling Report, 1993 <br /> Southland Site No. 20304 <br /> 455 Grant Line Road <br /> Tracy, California <br /> Dear Mr. Vasquez: <br /> This First Quarter Monitoring and Sampling Report, 199 presents the results of monitoring and <br /> sampling activities performed by Groundwater Technology, Inc. at The Southland Corporation <br /> (Southland) Site No. 20304 located at 455 Grant Line Road in Tracy, California (Attachment 1, <br /> • Figure 1) between January 1 and March 31, 1993. <br /> The activities during this reporting period included: <br /> ■ Monitoring 13 groundwater monitoring wells (Figure 2) to measure the depth to <br /> water (DTW) and to check for the presence of separate-phase hydrocarbons. <br /> ■ Collecting groundwater samples from 11 monitoring wells and submitting them to <br /> a California-certified laboratory for benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX), and total petroleum hydrocarbons-as-gasoline (TPH-G) analyses using <br /> Environmental Protection Agency (EPA) Methods 8020/8015 and for total petroleum <br /> hydrocarbons-as-diesel fuel (TPH-D) analysis using EPA Method 3510/8015. The <br /> samples collected from monitoring wells MW-1, MW-2, and MW-4 were analyzed for <br /> pH, nitrates, chloride, and sulfate. The sample from well MW-1 was also analyzed <br /> for total lead using EPA Method 7421, for pesticides and polychlorinated biphenyls <br />. using EPA Method 608, and for volatile organics using EPA Method 601. These <br /> additional analyses were performed to comply with discharge permit requirements <br /> and to evaluate the appropriate groundwater treatment system. <br /> GROUNDWATER MONITORING DATA <br /> Groundwater monitoring was performed on March 11, 1993. Before monitoring, the wellcaps were <br /> opened to allow the water in each well to stabilize to atmospheric pressure. The DTW and the depth <br /> . to separate-phase hydrocarbons were measured to the nearest 0.01 foot from the top of the well <br /> R3767A1.SCN <br /> Offices throughout the U.S.,Canada and Overseas <br />