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Work Plan-Soil and Groundwater Investigation Henan&Helen's Marina May 20, 1996 ' Page.;. TABLE 1 Laboratory Results (Soil - August 1995) iB T E X TPH-G TEPH Detection 5.0 5.0 5.0 5.0 1.0 1.0-10 ' Sample I.D. Limits: µg/kg µg/kg µg/kg µg/kg mg/kg mg/kg 1432-HPI-1I (#) 1,200 3.100 5,500 22.000 300 190 (diesel) ' 1432-HP2-11 (#) ND ND 130 2,800 22 ND 1432-HP3-5.5 61 68 5.2 91 7.5 16 (diesel) ' Note:The last number in each sample 1D indicates the depth at which the sample was collected. Unit Conversions: ' µg/kg:parts per billion(ppb) B,T,E,X =benzene,toluene, ethyl benzene, and total xylenes. mg/kg:parts per million(ppm) TPH-G=total petroleum hydrocarbons, quantified as gasoline. TEPH =total extractable petroleum hydrocarbons,quantified as diesel, motor oil, and kerosene. ' ND=nonedetected at or above laboratory detection limits. #=detection limits raised due to gasoline interference. ' TABLE 2 Laboratory Results (Groundwater/Hydropunch - August 1995) B T E X TPH-G TEPH ' Detection 0.3 0.3 0.3 0.6 0.05 0.05-0.5 Sample I.D. Limits: µg/L µg/L µg/L µg/L mg/L mg/L ' 1432-HPI-8/22/95 3.2 14 5.5 26 0.22 0.79 (diesel) 1432-HP2-8/22/95 0.4 1.3 ND 8.7 ND 057 t (diesel) 1432-HP3-8/22/95 (#) 260 1 ND 8.4 36 1.0 0.24 (diesel) Init sons: µg/L:paits ns perper billion(ppb) B,T,E,X =benzene, toluene,ethyl benzene, and xylene. mg/L:parts per million(ppm) TPH-G=total petroleum hydrocarbons, quantified as gasoline. TEPH=total extractable petroleum hydrocarbons,quantified as diesel, motor oil,and kerosene. ND=none detected at or above the reported laboratory detection limits. p=detection limit raised due to gasoline interference. Based on the results of the August, 1995, investigation, Condor recommended additional investigation be conducted to evaluate the extent of the hydrocarbon plume (reference Soil and tGroundwater Investigation Report, prepared by Condor, dated September 26, 1995). Mr. Ronald ' j�e CONDOR