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TABLE B.3 <br /> Laboratory Results (Soil/Geoprobe) <br /> B T E X MTBE TPH-G TEPH <br /> Detection 5.0 -9.0 5.0 5.05.0 l.0 1.0-10 <br /> Sample I.D. Limits: pg/kg µg/kg pg/kg pg/kg mg/kg Etg/kg mg/kg <br /> 1432-GPI-9 ND ND ND ND ND ND ND <br /> 1432-0P2-I I ND ND ND ND ND ND 45 (motor oil range?) <br /> 1432-GP-3-10 ND ND ND ND I 14 ND 39(motor oil range?) <br /> 1432-GP4-5 920 1,500 ND(100) ND(100) 14,000 28 55 (motor oil range?) <br /> 1432-GP5-13 ND ND ND ND ND ND ND <br /> Unit Conversions: Analvtical <br /> µg/kg:parts per billion(ppb) BTEX=benzene,toluene,ethyl benzene,and total xylenes'. <br /> nag/kg:parts per million(ppm) VITBE=methyl tertiary butyl ether <br /> TPH-G=total petroleum hydrocarbons,quantified as gasoline. <br /> TEPH=total extractable petroleum hydrocarbons,quantified as <br /> diesel.motor oil,and kerosene. <br /> ND=none detected at or above laboratory detection limits. <br /> (100)=detection limits raised due to gasoline interference. <br /> (motor oil range?)=organics detected within the motor oil ran__e. <br /> however,do not match the motor oil pattern. <br /> TABLE B.4 <br /> Chemical Analyses (Groundwater/Geoprobe) <br /> B T E X MTBE TPH-G TEPH <br /> Detection 0.3 0.3 0.3 0.6 1.0 0.05O.m-0.5 <br /> Sample I.D. Limits: µg/l µg/1 )tgll ugA µg/1 Itg/I _ <br /> 1432-GPI-8/29/96 ND 0L3 ND <br /> ND ND ND ND <br /> 1432-0P2-8/29/96 0.4 0.6 ND 0.6 ND <br /> ND ND <br /> 1432-GP4-8/29!96 69 600 1 66 100 11,300 2.7 <br /> ND <br /> 1432-GP5-8/29/96 <br /> ND ND I ND ND ND ND ND <br /> Unit Conversions: Analvtical <br /> pto:parts per billion(ppb) BTEX=benzene,toluene,ethyl benzene,and xylene. <br /> nig/l:parts per million(ppm) MTBE=methyl tertiary butyl ether. <br /> TPH-G=total petroleum hydrocarbons,quantified as gasoline. <br /> TEPH=total extractable petroleum hydrocarbons,quantified as <br /> diesel,motor oil,and kerosene. <br /> ND=none detected at or above the reported laboratory detection <br /> limits. <br /> Based on the results of the Geoprobe investigation, Condor recommended that monitor wells be <br /> installed at the site to investigate and monitor the lateral extent of the gasoline and diesel <br /> contamination plume (reference - Soil and Groundwater Investigation Report, prepared by <br /> Condor, dated September 30, 1996). Mr. Ronald Rowe of the PHS/EHD approved the proposal <br /> for the monitor well installation in correspondence to Condor, dated February 6, 1997. Condor <br /> subsequently prepared the Work Plan for Monitor Well Installation, dated May 30, 1997. As <br />