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II <br /> TABLE B.2 <br /> Laboratory Results (Groundwater/Hydropunch - August 1995) <br />' B T E X TPH-G rEPH <br /> Detection 03 03 03 06 005 0 05-0 5 <br /> r4tmple I D Limits µg/l µg11 itg/1 Itg/1 mg/l mg/I <br /> 1432-HPI-8122195 12 14 5 5 26 0 22 0 79 <br /> (diLtic]) <br /> r1432-111'2-9/22/95 04 1 3 ND 8 7 ND 0 57 <br /> (d1L1LI) <br /> r 14324IM-8x22195 {k€) 260 ND 84 36 1 U 1 024 <br /> (diLsc.l) <br /> I111114:0nyLnsom And_ lnical <br /> µ,/I parts per billion(pp) ti I EX=bcnrure tolu(,nL Lthy I NLnzcne and xylenL <br /> img/I parts pLr mullion(ppm) I PI I-6—total pLtrolLum hydrocarbons quantrfrLd as gasolim <br /> FrPI I—total e,xtractablL petroleutn hydrocarbons quantsfied as diLSLI <br /> motor nsI and kt-rnSLnL <br /> I ND=nonL dLtLCtLd at or above thL reported laboratory deti-dion limits <br /> k—dLtection limit raiSLd due,to gasolmL MtUferen" <br /> r Based on the rt,Sults of the August, 1995, Investigation, Condor rt-commended additional investigation be <br /> conducted to evaluate the extent of the hydrot_arbon plume (reference ,Soil and Gioundivutei Invetitigalion <br /> Repo1 t, prepared by Condor, dated SLptember 26, 1995) Mr Ronald Rowe, of the PI IS/EHD verbally approved <br /> thi, proposal for additional investigation during a telephone conversation with C ondor in mid-Eebruary 1996 <br /> On August 29, 1996, HVL OLoprobe borehole,, (Cil'-1 through 01-1-5) wise installed at the Site (SU, the figure <br />' attached to the back of Appendix Ii for bori.11olc, locations) Linda I url.ette of the PHS/1--f-ID was on tiitc to <br /> observe the fiLldwork Soil 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 /> MTBE were detected at GP-4 17he TEPH (motor oil range) concentrations detected in soil samples collected <br /> rfrom CSP-2, OP-3, and GP-4, are questionable and are likely to be associated with the natural organic content of <br /> the soli (i e, peat), which is known to produce false positive results (see Tables 13 3 and B 4, below) <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br />