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indicating the proximity of the water table. A clean barrel was <br /> inserted, and a corglg.* taken from 7_Q„' _-to 72' . Recovery <br /> consisted of 6" tan to buff silty dry clay, grading to 18" of tan <br /> to brown, soft, friable, fine-grained water sand_ No odor or <br /> visible contamination was noted, but a portion of the core <br /> recorded 250 ppm with the PID meter. The tube at 71 ' was sealed <br /> and preserved using standard field protocol . <br /> The bit insert was reinstalled, and the augers were advanced to <br /> 82' ; drill cuttings consisted of wet water sand as described <br /> above. When the auger flights were pulled preparatory to <br /> enlarging the hole for casing, the bottom two feet consisted of <br /> buff to brown sandy clay. Refer toIBITV1 for a lithologic <br /> plot of the well. <br /> While the 8 1/4" flights were being steam--cleaned, the hole was <br /> enlarged with clean 10 1/4" OD flights to allow sufficient <br /> annular space for 4" casing. Drill cuttings and unused core <br /> material was placed in metal drums for future disposal or <br /> remediation. <br /> . After enlarging the hole to bottom, 4" OD, sch. 40, flush joint <br /> threaded PVC was made up and run in the hole to 80' . The bottom <br /> 15' was perforated with 6 rows of . 02" horizontal shop--made <br /> slots, (top of perf s at 65' ; ) the rest was blank to the surface. <br /> The annulus was packed with 7 sacks of #2 1/2 graded sand; the <br /> top was located at 60 ' _ The sand was capped with 1 3/4 sacks of <br /> bentonite, (which was wetted with water, ) top was located at 57' . <br /> The top of the casing was sealed and covered, and operations <br /> ceased for the day <br /> The preserved samples were transported under proper chain of <br /> custody to Sherwood Laboratory for analysis by Del Tech with <br /> instructions to test for BTEX & TPH-G. <br /> May 25 1993 - While the auger flights were bung steam-cleaned, <br /> the top of the bentonite seal was rechecked, and the annular <br /> space from that point to the surface was grouted with Class A <br /> construction cement which was thoroughly mixed in a portable <br /> power operated tank equipped with agitator fins When the proper <br /> consistency was reached, the slurry was pumped through a flexible <br /> hose lowered down the annulus. Refer to EXHI$IT_X for a <br /> schematic diagram of the well completion details <br /> The rig was moved and spotted over the location marked for <br /> MONITORING WELD , and operations began using clean 8 1/4" <br />• augers. Surface sediments consisted of 2-3' of dark brown to <br /> black peaty loam, which graded to a buff to brown silty clay <br /> 9 <br />