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tube was labeled and placed on ice in a sealed chest pending <br /> transfer to the laboratory. A portion of the first tube was <br /> placed in a one-quart ziplock bag, labeled and set aside for <br /> 10-15 minutes to allow any volatile compounds to vaporize The <br /> remaining portions of the core were examined and described by the <br /> geologist . Unused core material and drill cuttings were placed <br /> in metal drums, which were sealed, labeled, and stored on site <br /> pending later disposition <br /> After 10-15 minutes, the probe of a field calibrated Thermo <br /> Environment Instuments Model 850B OVM was inserted into the <br /> plastic bag, and a reading taken <br /> Cores were taken at 5 ' intervals from 5 ' to 3616" using the same <br /> field techniques described above. The first reading on the PID <br /> meter was from the cored interval 201 -211611 , but no odor or <br /> discoloration was noted Positive FID readings & petroleum odors <br /> were recorded in all cores below that depth. The bottom of the <br /> last core, (351 -3616" , ) contained sticky blue-gray clay; it had a <br /> petroleum odor but no visible discoloration The core barrel was <br /> wet, and the blue clay was damp. For complete details of blow <br /> . counts, core recovery, lzthologic descriptions, PID readings, and <br /> other pertinent information, refer to PLATE VII The auger <br /> flights were advanced to 37 , bgl , a tape was run and found water <br /> at that depth It had a definite petroleum odor The augers <br /> were then advanced to 50 , bgl , and the crew prepared to run <br /> casing <br /> 2" Schedule 40, blank & slotted flush screw-point PVC was run in <br /> the flights to 501 , the bottom 20 ' consisted of horizontal. 020" <br /> machine cut slots with a solid screw on plug on the bottom The <br /> top of the screen was at 301 , approximately 71 above the water <br /> table. From 30 , to the surface was blank #3 Lonstar graded <br /> sand was poured down the annular space between the casing and the <br /> augers from the surface The casing was continually vibrated <br /> during sand placement, and fill was checked with a weighted tape. <br /> As the sand filled the annulus, auger flights were slowly <br /> withdrawn. A total of 6 1/2 sacks of sand was used, the top was <br /> located at 281 , 2 feet above the top of the screened portion. A <br /> bucket of bentonite pellets was poured down the annulus on top of <br /> the sand; it was wetted with a bucket of water The top of the <br /> bentonite seal was located at 251611 , 2 1/21 above the sand pack. <br /> The remaining auger flights were withdrawn from the hole, they <br /> were covered with sticky, blue-grey clay The top of the hole <br /> was covered with a large metal plate pending grouting of all <br /> three wells Refer to PLATE X for completion details . <br /> • After decontaminating the auger flights & core barrels, the rig <br /> 5 <br />