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' TABLE B 2 <br /> • I,aboratory RLSUItS (Groundwater/Hydropunch - August 1995) <br /> B T i X l PH-C' TEPH <br /> Detection 0 3 03 03 06 005 iF 05-0 5 <br />' ti rmple t D Lirnits iig/l )ig/! ag/f 4g/t mg/l mg/l <br /> I t12-1IPI-X17'91 3 2 11 5 S 26 022 II 79 <br /> I.li�sel) <br />' 1 112 1012-8 22 95 ll 1 13 \D R 7 fit) II 57 <br /> (iiiescl) <br /> 1112-III'; 9122 9� In) 160 \D X 1 36 1 0 <br /> i nit l„nrertiiix�5 1nz1}i�ea] <br />' ,kLll 1111-1+pu billion(pp ) li I r benzene tolutne ethyl benJine znd xylene <br /> mJl part~per mullion(ppm) TPF{-(r—total petrolLum hydrmcarbons quantttied as gasoline <br /> I f PI i total trtratabh.p0roleum hydrocarbons quantified ti'du%cl <br /> motor oil and kcrosa.ne <br />' ND none detected it or above the reported laboratory detection limits <br /> a detection Intuit raised due to gasoline rntertvence <br /> Based on the results ofi the August 1995, investigation, Condor recommended additional investigation be <br />' conducted to evaluate the extent of the hydrocarbon plume (reference Soil and Groundwater Investigation <br /> Report, prepared by ( ondoi dated September 26, 1995) Mr Ronald Rowe of the PHS/PFiD verbally approved <br /> the proposal tot additsonal Investigation during a telephone conversation with Condor in mid*ebruarv, 1996 <br />'• On August 29 1996 live (,toprobe boreholes ((,P-1 through (W-5) were Installed at the site ("Le the figure <br /> attached to the back of Appendix B for borehole locations) [ inda Turkette of the PHS/1,E11) was on site to <br />' observe the fieldwork Soil and groundwater samples were collected during the investigation fol laboratory <br /> analyses The. rf.sults ofi the laboratory analyses indicated that elevated concentrations of TPH-(; BTE:X, and <br /> MTBE. 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 talse positive results (see Tables B 3 and B 4 on the next page) <br /> I <br />