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IWAIR11 R11 A1( NNORIN6 RI PORT 00oher 1997 <br /> (A N1 PA ti(AR WASII <br /> 6I111 E'+e.fLe A\J)CL 1t'UliloID CA <br /> IJcu.nfhu Il] 1997 <br /> below the ground surface (bgs) at the site The groundwater cicvatton ranged from 28 82 to 27 73 feet <br /> below sea level (bnlsl) I he groundwater (.levation contour map (Figur. 3, Appendix A) Indicates <br /> groundwater mounding in the center of the site in the vicinity of MW-1 and MW-2 See Table 1, <br /> below, for groundwater (,levatkon data A hydrograph of groundwater elevations is included as Figure <br /> 4, Appendix A <br /> TABLE 1 <br /> Ground%Nater Elevation Data (October 21, 1997) <br /> MW-1 through MW-8 <br /> Well Well Casing Well Collar Depth to Groundviater <br /> ID Screen Elevation Water Elevation <br /> Interval (feet) (feet) (feet) <br /> (feet - bgs) <br />' MW-1 50 - 70 13 45 41 18 -27 73 <br /> MW-2 50 - 70 13 27 41 12 -27 85 <br /> MW-3 50 - 70 13 50 41 72 -2822 <br /> MW-4 50 - 70 13 82 41 80 -2798 <br /> A'IVV-5 50 - 70 1269 4074 -2805 <br /> N NN-6 45 - 65 11 62 4044 -28 82 <br /> AIW-7 45 - 65 13 18 41 61 -28 43 <br /> MNN-8 45 - 65 13 26 41 59 -2833 <br /> 4 2 Chemical Anah%" (TPH-G, BTEX, Oxygenates/Additives) <br /> The groundwater samples %Here analyzed by GeoAnalytical Laboratories for Totla Petroleum <br /> Hydrocarbons - Ga,,oline (TPH-G) by Method 5030/1-UrT, for Benzene Toluene Ethyl Benzene and <br /> Xylene (BTEX) by LPA Method 602, and for gasoline oxygenates/additives by EPA Method 8260 <br /> The gasoline oxygenates/additives Include Methyl tertiary-Butyl Ether (MTBE), Ethanol tertiary- <br />. r] a.. 1 Yl I rl rntnr.� I:ti.. l ♦�,.-+ l7 t .l Gth�.� (E=TRr'1 and tej,,ru niwi N/Imltvl Ether <br /> vuiatiol, vl-%, 4iucr k"Ih ") cUl)I iwuary-viii}i wi �� a 1 J J J <br /> (TAME) <br /> TPH-G was detected In ground\Vatcr sannples collected frons MW-1 MVI'-2 MW-4 and SV-5 at <br /> concentrations ranging frons 0 09 to 290 nig/l BTEX constituents were detected In MW-1, MW-2, <br /> MW-7, and SV-5 at cnncentratiow, rail-in,g frons 10 to 73 000 Pig/I MTBE was detected In Samples <br /> collected from MVI-1 MW-2 MW-3 and 5V-5 at concentiations ranging, from 14 to 37,000 1tg/l <br /> Chemical analyses indlcat(,d that ga5ohni- oxygcnate5/addltive5 L\Lludins, MTBE were not detect(A at <br /> or above the laboratory (IcteCU011 limits En any of th(, san1p1c5 analyzed Chemical analy,,es also <br /> �� CONDOR <br />