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v <br /> I <br /> f and underneath the fill spout area. The 171 depth was obtained <br /> by having the backhoe excavate as deep as possible from the sur- <br /> face. The samples were labeled T-2 and T-2b, with the b sample <br /> label designation signifying end of tank area. The parameters to <br /> be analyzed for were BTX and TPH. Tank T-2 exhibited no signs of <br /> sxa leakage except as noted and the excavated area did not emit any <br /> noticeable odors. <br /> At 2:45 pm, excavation of tank T-3 began. Again, noticeable <br /> " product was observed near the fill spout area. The tank was <br /> removed and loaded onto the truck. No visible signs of leakage <br /> were present. The sample gathering from the tank bottom area of <br /> bra T-3 was postponed until tank T-1 had been removed. <br /> k E <br /> At 3:15 pm, removal of tank T-1 began. The tank was removed and <br /> F..° loaded onto the truck. No visible sign of tank damage was <br /> observed. The excavation area for tank T-1 emitted strong <br /> gasoline odors. The backhoe excavated 17' beneath the tank fill <br /> spout area and retrieved a bucket load of soil from which the <br /> sample was obtained. Only one sample was taken from this tank <br /> >; area per request by the on-site health official. The sample was <br /> labeled T-1. The analytical parameters were BTX and TPH. <br /> While excavating tank T-1, an additional tank was discovered. <br /> This tank was a previously abandoned storage tank which had been <br /> e filled with sand. In addition to this sand filled tank, a waste <br /> oil tank was discovered adjacent to the east side of tanks T-2 <br /> and T-3. Neither excavation nor disposal of these tanks occurred <br /> at this time. <br /> At 4:45 pm, the sidewall area and bottom sands from beneath tanks <br /> T-2 and T-3 were stockpiled and a bucket load from the 171 depth <br /> was retrieved for the end of the tank T-3 area for sampling. <br /> This bucket load emitted medium to strong gasoline odors. A <br /> sample was gathered and labeled T-3b. A similar bucket load was <br /> gathered from beneath the fill spout area. Mild odors were <br /> observed in this bucket load. The sample was obtained and <br /> labeled T-a. Both samples were to be analyzed for BTX, TPH, EDB <br /> and organolead. <br /> Once the bottom of the tank areas had been sampled, the stockpile <br /> material was sampled. A composite sample was obtained from the <br /> is stockpile by digging into the pile and composite filling a brass <br /> tube in four locations. The sample was labeled composite and was <br /> to be analyzed for BTX, TPH, EDB, and Organolead. <br /> � # Each sample after being gathered, was stored on ice for shipment <br /> to the WESTON Stockton Analytical Laboratory. <br /> On May 3, 1988, all parties returned to the site to remove and <br /> dispose of the waste oil tank T-6 and the sand filled tank T-7 <br /> The WESTON representative, Erik Friedrich, arrived at 9:15 and <br /> on-site were two men from Evans Brothers Inc. They had already <br /> P <br /> f:M <br />