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Table A-Historical Groundwater Monitoring Data <br /> Noe <br /> H T E X MTBE Otber TPH-G TPH-D,K,MO Ground <br /> Oxygenates Water <br /> DTW Elevation <br /> Detection limits: 0.5 0.5 0.5 1.0 0.5 0.5-13 50 50-500 <br /> Monitor Well(TOC) DATE gg/L li8/L µg/L l+g/L Ngo A91L µg/L µg/L <br /> MW-1(17.42) 12118101 <0.5 0.6 <0.5 <1.0 <0.5 ND <50 ND 37.56 -20.14 <br /> 6128/02 <0.5 [0.5 <0.5 <1.0 <U ND <50 ND 37.16 -19.74 <br /> 9111/02 <0.5 <0.5 <0.5 <1.0 <0.5 ND <so ND 39.04 -21.62 <br /> 12/27/02 <0.5 <0.5 <0.5 <1.0 <0.5 NO <50 ND 39.87 -22.45 <br /> 3/13/03 <0.5 <0.5 <0.5 <1,0 <0.5 ND <50 ND 38.90 -21.48 <br /> MW-2(17.59) 12118/01 0.5 1.0 <0.5 <1.0 <0.5 4.3(1,2-DCA) 150 ND 37,64 -20.05 <br /> 6/28/02 <0.5 <0.5 <0.5 <1.0 <0.5 3.3(1,2-DCA) <50 ND 37.38 -19.79 <br /> 9111102 <0.5 0.5 <0.5 <1.0 <0.5 2.5(1,2-DCA) 100 ND 39.30 -21.71 <br /> 12/27/02 0.8 2.5 1.1 1.3 <0.5 2.0(1,2-DCA) 210 ND 39.98 -22.39 <br /> 3113103 0.7 1.7 1.9 2.9 <0.5 1.9(1,2-DCA) 240 230(THP-D) 39.05 -21.46 <br /> 550(TPH-MO) <br /> MW-3(17.16) 12118/01 2.8 1.5 1.6 4.5 82 715(12-DCA) 210 ND 37.38 -20.22 <br /> 6728102 4,7 1.3 3.7 4.6 190 93(1,2-DCA) 480 ND 37.02 -19.86 <br /> 9111/02 5.0 0.7 5.5 4.9 160 74(1,2-DCA) 680 350*CrPli-D) 38.92 -21.76 <br /> 12/27/02 2.9 2.2 1.3 11 75 40(1,2-DCA) 610 540(TPH-K) 39.63 -22.47 <br /> 3113/03"" 8.6 1.4 5.6 12 85 41(1,2-DCA) 930 220(TPH-D) 38.75 -21.59 <br /> All Measurements Are In Feet-Elevations Are In Feet Above Mean Sea Level. <br /> TOC=top of casing. <br /> Units: µg/L=parts per billion <br /> mg/L=parts per million <br /> Analytical: <br /> BTEX=benzene,toluene,ethyl benzene,total xylenes <br /> TPH-G=total petroleum hydrocarbons,quantified as gasoline <br /> TPH-D,K,MO=total petroleum hydrocarbons quantified as diesel(D),kerosene(K),or motor oil(MO) <br /> MTBE=methyl tert-butyl ether <br /> Other oxygenates include tertiary-butanol(TBA),di-isopropyl ether(D1PE),ethyl tertiary butyl ether(ETBE),tertiary- <br /> amyl methyl ether(TAME), 1,2-Dichloroethane(1,2-DCA), 1,2-Dibromoethane,and ethanal. See laboratory results for <br /> detection limits of individual compounds <br /> ND=not detected at or above the laboratory reported detection limits <br /> *=the sample chromatogram does not match the standard diesel chromatogram and the result is an estimated value <br /> **=high surrogate recovery for TPH-G and BTEX due to matrix interferences <br /> P:13024 CSUS-Mu1ti-CampuslQMR12003 March\Historical Data Table.doc <br />