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• • OES - Sharpe Army Depot, Lathrop <br />August 28, 1995 <br />Page -3- <br />5.0 RESULTS OF ANALYSES <br />Laboratory analyses of the soil sample collected from the tank excavation (1407 -Mid 5- <br />8/14/95) indicates that TPH-G, BTEX constituents, TEPH constituents and TTLC lead were not <br />detected at or above the laboratory's reported detection limits. Laboratory analyses of the sample <br />collected from the soil stockpile indicates that toluene, motor oil and lead were present at <br />concentrations of 9.6 µg/kg, 42 mg/kg and 18 mg/kg, respectively. TPH-G, benzene, ethyl benzene, <br />total xylenes, kerosene and diesel were not detected at or above the laboratory's reported detection <br />limits. <br />TABLE 1 <br />Laboratory Results for Soil Samples <br />Unit Conversions: <br />µg/kg:parts per billion (ppb) <br />mg/kg:parts per million (ppm) <br />B,T,E,X = benzene, toluene, ethyl benzene, and xylene. <br />TEPH = total petroleum hydrocarbons, quantified as kerosene, diesel, and motor oil. <br />TPH-G = total petroleum hydrocarbons, quantified as gasoline. <br />ND = none detected at or above laboratory detection limits. <br />6.0 CONCLUSIONS AND RECOMMENDATIONS <br />Based on the laboratory analyses of the soil sample collected from the tank excavation, <br />TPH-G, BTEX constituents, TEPH constituents and TTLC lead were not present at or above the <br />laboratory's reported detection limits. No petroleum odor was noted following the removal of TK1. <br />Inspection of the exterior of TK1 indicated moderate corrosion, but no holes or cracks were observed. <br />No underground piping associated with TK1 was observed. The soil in the excavation consisted of <br />silty, brown, sand (backfill material) from the surface to approximately 5.0 feet bgs. No petroleum <br />t� CONDOR <br />B <br />T <br />E <br />X <br />Lead <br />TPH-G <br />TEPH <br />Kerosene <br />Diesel <br />Motor <br />Oil <br />Detection <br />Limits: <br />Sample I.D. <br />5.0 <br />µg/kg <br />5.0 <br />Ing/kg <br />5.0 <br />FAg/kg <br />5.0 <br />µg/kg <br />5.0 <br />mg/kg <br />1.0 <br />mg/kg <br />1.0 <br />mg/kg <br />1.0 <br />mg/kg <br />10.0 <br />mg/kg <br />1407-Mid5-8/14/95 <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />1407 -SP -8/14/95 <br />ND <br />9.6 <br />ND <br />ND <br />18 <br />ND <br />ND <br />ND <br />42 <br />Unit Conversions: <br />µg/kg:parts per billion (ppb) <br />mg/kg:parts per million (ppm) <br />B,T,E,X = benzene, toluene, ethyl benzene, and xylene. <br />TEPH = total petroleum hydrocarbons, quantified as kerosene, diesel, and motor oil. <br />TPH-G = total petroleum hydrocarbons, quantified as gasoline. <br />ND = none detected at or above laboratory detection limits. <br />6.0 CONCLUSIONS AND RECOMMENDATIONS <br />Based on the laboratory analyses of the soil sample collected from the tank excavation, <br />TPH-G, BTEX constituents, TEPH constituents and TTLC lead were not present at or above the <br />laboratory's reported detection limits. No petroleum odor was noted following the removal of TK1. <br />Inspection of the exterior of TK1 indicated moderate corrosion, but no holes or cracks were observed. <br />No underground piping associated with TK1 was observed. The soil in the excavation consisted of <br />silty, brown, sand (backfill material) from the surface to approximately 5.0 feet bgs. No petroleum <br />t� CONDOR <br />