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TABLE B.2 <br /> Laboratory Results (Groundwater/Hydropunch - August 1995) <br /> B T E Y TPH-G TEPH <br /> Detection 03 03 03 06 005 0 05-0 5 <br /> 'sample I D Limits ug/1 l-tg/l ug/I 1tg/I mg/I mg/l <br /> 1 432 HI'I-8,'�2/9s ; 2 14 7 26 022 0 79 <br /> (diesel) <br /> i 432-HP2-8/22 95 04 1 3 ND 8 7 ND 0 57 <br /> (dt�sc,l) <br /> 1432 11Y3-8122 94 161) ND 8 4 36 1 0 0 24 <br /> (diesel) <br /> L nit( onyersiona lnalvrical <br /> }Lg,l parts per billion(pp ) RTE X -bLIIZLne toluene ethvl benzene and xylene <br /> Mg/1 parts pLr inijlitin(ppm) 11311-0--total pLtrolium hvdrocarbons quanttfiLd x,nasolinL <br /> rLPFI total extractable petroluim hvdrocarbons quantified as diesel <br /> motor oil and kLTOSene <br /> 'ail) none dcdecte.d at or above,the reported Iaboratory detection Innits <br /> H dLtec.tion I:mit raised due to gasoline interference <br /> Based on the results of the August 1995 investigation, Condor recommended additional investigation be <br /> conducted to evaluate the extent of the hydrocarbon plume (reference ,Foil and Uroundlvatei Investigation <br /> Report, prepared by Condor, dated September 26 1995) Mr Ronald Rowe of the PHS/EHD verbally approved <br /> the proposal tar additional investigation during a telephone conversation with ( ondor in mid-1~ebruary 1996 <br /> On August 29 1996 five (reoprobe boreholes ((,P-1 through 011-5) were installed at the srtc (scL the figure <br /> attached to the back of Appendix B for borehole locations) 1 Enda Curkette of the PHS/FHD was on site to <br /> I observe the fieldwork ',oil and groundwater samples were collected during the investigation for laboratory <br /> analyses 1 he results of the laboratory analyses indicated that elevated concentrations of TPH-G, BTEX, and <br /> MTBF were detected at GP-4 The TEPH (motor oil range) concentrations detected in soil samples collected <br /> from GP-2, GP-3, and GP-4, are questionable and are likely to be associated with the natural organic content of <br /> the soil (i e , peat), which is known to produce false positive results (see Tables B 3 and B 4 on the next page) <br /> I <br />