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dark gray lime cemented sands & gravels. Contamination was <br /> evident during spoil removal on the south and east walls of the <br /> excavation, and some petroleum odor could be4detected. Some of <br /> the harder material had a petroleum .odor when broken, but no free i <br /> product was noted. Because of the highly unconsolidated nature <br /> of the sands, sloughing & caving of the sides of-` the excavation <br /> was common. Spoil removal continued until all evidence of <br /> contamination was removed; the final size of -the; pit was appr'ox- <br /> imately 44 feet N-S, and 32 feet E-W; with a maximum depth of- 14 <br /> feet: <br /> Under the direction of Linda,''Turkette, REHS, and: Wm. Hunter, ,the <br /> excavator operator removed undisturbed soil with� the excavator_ <br /> Mike Allsup of Geo-Analytical laboratories took samples' from the <br /> teeth of the bucket by pushing a clean metal tube into the soil, <br /> f quickly sealing the ends with teflon tape, plastic caps and duct f <br /> tape., and placing them in an';Ace chest for preservation. The <br /> locations of those samples, & summary of laboratory results, are <br /> shown on PLATE VII. <br /> The removed spoil, which had°'been stored on plastic to the west <br /> of the site, was also sampled by the technician at the approxi- <br /> mate locations shown on PLATE VIII by digging down int6 the pile � <br /> with a small shovel., and pushing a acetal tube into the soil. The <br /> i <br /> samples were sealed and preserved .in the same manner as,� those <br /> from the excavation k <br /> I <br /> The preserved samples were transported under chain-of-custody to <br /> Geo-Analytical laboratory for analysis. Tests required by the <br /> County EHD for samples from the excavation were: '; BTEX, (EPA <br /> 5030/8020, ) & TPS-D, (EPA 5030/3550 . ) The results of those <br /> analyzes are summarized on TABLE II, which show that BTEX was F <br /> below detection limits in all samples, and TPH-D; was only <br /> measured in sample# Btm. So. at 10. 5 mg/kg. Calculating levels <br /> for leaving in place using the Leaching Potential Analysis .for <br /> Diesel worksheet from the LUFT Manual shows that• the allowable <br /> level 'is 100 mg/kg, far above that measured at this site. Copies . <br /> of the laboratory reports & chain-of-custody 'are'° included as <br /> EXHIBIT E. <br /> r <br /> The four samples taken from the removed spoil were composited <br /> into two for analysis & profiling purposes to determine, the best <br /> method of treating or disposing of the spoil. The two samples <br /> were analyzed by EPA Methods 8010, 8020, TEPH .(3550 LUFT) & TTLC , <br /> for 10 metals. Those results are summarized -on TABLE 111; copies. <br /> of the laboratory reports and chain-of-custody are included as <br /> EXHIBIT F. <br /> After a review of the lab results of the samples. from the removed' <br /> spoil pile, Forward.,. Inc. , agreed to. take the material for treat- <br /> 4 <br />