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F <br /> MAE <br /> TABLE B <br /> TESTS ON PIT BOTTOM WATER SAMPLE <br /> Units: ug/1 = ppb; mg/l = ppm <br /> ND = Not detectable at level shown <br /> Samp1Q Date: 5/8/91 <br /> Detect. Detect. <br /> Benzene Toluene E'Benzene Xylene Limit TPH(D) Limit <br /> ug/l ug/l <br /> r <br /> Method: 602 Method: 5030 <br /> PIT <br /> WTR. ND ND ND ND 5 ND 50.0 <br /> TABLE C <br /> TESTS ON SPOIL SAMPLES (SOIL) <br /> Units: ug/kg = ppb; mg/kg = ppm <br /> ND = Not detect. at level shown <br /> Sample Date: 5/8/91 <br /> Detect. Detect. <br /> Benzene Toluene E'Benzene Xylene Limit TPH(D) Limit <br /> mg/kg mg/kg <br /> Method: 8020 Method: 5030 <br /> SP-E ND ND ND ND .005 ND 1 <br /> SP-W <br /> SP-S ., <br /> CONCLUSIONS <br /> All tests, a total of 15 when including triose from the pit <br /> sides and bottom, water from seepage into the pit and those <br /> from the spoil piles, showed no hydrocarbon contamination <br /> at the limits of detection as recommended by the Tri- <br /> Regional Guidelines. <br /> It is concluded by the writers that the contamination <br /> originally round was from casual spills at the surface and <br /> that the groundwater has not been impacted. <br /> No further groundwater investigations are needed. <br /> RECOMMENDATIONS <br /> It is recommended that the pit be re-filled with the spoil <br /> from the excavation and that the site b�eT,4d clean. <br /> ennis R. Allen r- 'a <br /> -f June 12, 1991 <br /> 5 <br />