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1 I <br /> CLOSURE REPORT FOR UNDERGROUND STORAGE TANK 834-DlU1 <br /> SUMMARY OF ENVIRONMENTAL SAMPLES COLLECTED: <br /> Sample Identification Matrix Depth below Grade <br /> (Inches) <br /> 1) TK-01-834-01-D1U1-SO-SP Stockpile Soil N/A <br /> 2) TK-01-834-02-D1U1-SO-SP Stockpile Soil N/A <br /> 3) TK-02-834-01-D1U1-SO-120 Tank Excavation 120 <br /> 4) TK-03-834-01-D1U1-SO-120 Tank Excavation 120 <br /> Matrix codes: SP(soil pile),SO(soil) <br /> [X] Environmental Sample Collection Map (Figure 1)is enclosed as Appendix D. <br /> SUMMARY OF LABORATORY ANALYTICAL RESULTS: <br /> Sample Identification Analyte EPA Method Sample Concentration <br /> Number <br /> 1)TK-01-834-01-D1U1-SO-SP TPH-D TPH-D TPH-D <br /> Diesel Fuel 8015 3.2 mg/kg <br /> BTXE BTXE BTXE <br /> AVOC 8020 ND <br /> HVOC HVOC HVOC <br /> HVOC 8010 ND <br /> 2)TK-01-834-02-D1U1-SO-SP TPH-D TPH-D TPH-D <br /> Diesel Fuel 8015 21 mg/kg <br /> BTXE BTXE BTXE <br /> AVOC 8020 0.0031 mg/kg xylene <br /> HVOC HVOC HVOC <br /> HVOC 8010 0.0025 mg/kg tetrachloroethene <br /> 0.0091 mg/kg trichloroethene <br /> STLC/TTLC STLC TTLC STLC TTLC <br /> Arsenic 6010/7000 6010/7000 ND 1.5 mg/kg <br /> Barium 6010/7000 6010/7000 14.0 mg/L 390 mg/kg <br /> Chromium 6010/7000 6010/7000 ND 40.0 mg/kg <br /> Cobalt 6010/7000 6010/7000 ND 14.0 mg/kg <br /> Copper 6010/7000 6010/7000 NC 22.0 mg/kg <br /> Nickel 6010/7000 6010/7000 NC 32.0 mg/kg <br /> Vanadium 6010/7000 6010/7000 0.85 mg/l 110.0 mg/kg <br /> Zinc 6010/7000 6010/7000 1.3 mg/L 56.0 mg/kg <br /> CRI CRI CRI <br /> pH 9040 8.8 <br /> Cyanide/Sulfide 9010/9030 ND/ND <br /> Flashpoint 1010 >140 degrees F <br /> Gross Alpha (Radiological Analytical ND <br /> Gross Beta Method Numbers Not ND <br /> Tritium Specified) ND <br /> Gamma Spectroscopy Gamma Spectroscopy <br /> Potassium-40 8.0E-06 uCi/mLgm <br /> Ra-216 5.1E-07 uCi/mLgm <br /> Ra-218 5.3E-07 uCi/mLgm <br /> Th-228 6.8E-07 uCi/mLgm <br /> TPH-D TPH-D <br /> Diesel Fuel 8015 <br /> BTXE BTXE <br /> AVOC 8020 <br /> TPH-D TPH-D <br /> Diesel Fuel 8015 <br /> BTXE BTXE <br /> AVOC 8020 <br /> NOTE: <br /> mg/Kg=milligrams per Kilogram <br /> µCi/mLgm=microCuries per milliliter-gram <br /> ppm=parts per million <br /> ND=Not detected above laboratory detection limits <br /> [X] Laboratory analytical results and chain of custody records for the environmental <br /> sample(s)enclosed as Appendix E. <br /> 4 <br />