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Table A-Historical Groundwater Monitoring Data <br /> S T E X MTBE Other TPH- TPH-D, Ground <br /> Oxygenates G IC,MO 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 ID DATE gg/L }tg/L µg/L pg/L 4L pg/L µg/L µg/L <br /> 54(TBA) <br /> MW-3(17.16) 12/18/01 2.8 1.5 1.6 4.5 82 71(1,2- 210 ND 37.38 -20.22 <br /> DCA) <br /> 6/28/02 4.7 1.3 3.7 4.6 190 9DCA) 480 ND 37.02 -19.86 <br /> 74(1,2- 350* <br /> 9/11/02 5.0 0.7 5.5 4.9 160 DCA) 680 (TPH- 38.92 -21.76 <br /> D) <br /> 40(1,2- 540 <br /> 12/27/02 2.9 2.2 1.3 11 75 DCA) 610 (TPH- 39.63 -22.47 <br /> K) <br /> 3113/03** 8.6 1.4 5.6 12 85 DCA)41 (1,2- 220 930 (TPH- 38.75 21.59 <br /> D) <br /> 1.2(TAME) 490* <br /> 8/10/04 11 <0.5 5.0 3.2 70 140(1,2- 640 (TPH- 41.23 -24.07 <br /> DCA) D) <br /> 29(TBA) <br /> 1.4(TAME) 130 <br /> (TPH- <br /> 11/10/04 6.2 <0.5 2.5 1.9 83 160(1DCA,)2- 510 D)320* 42.60 -25.44 <br /> - <br /> 33(TBA) (TPH- <br /> K) <br /> 1.5(TAME) 180* <br /> 2/3/05 7.1 <0.5 5.0 4.4 89 120(1,2 690 (TPH- 41.86 -2470 <br /> DCA) D) <br /> 29.2(1,2 144* <br /> 5/2/05 10.2 <0.5 24.7 12.7 30.8 DCA) 557 (TPH- 39.56 -22.40 <br /> D) <br /> All water level measurements and groundwater elevations are in feet. <br /> TOC=top of casing. <br /> Units:pg/L=parts per billion <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 (DIPS), ethyl tertiary butyl ether (ETRE), tertiary-amyl methyl ether <br /> (TAME),1,2-Dichloroethane(1,2-DCA),1,2-Dibromoethane,and ethanol.See laboratory results for detection limits of individual compounds <br /> ND=not detected at or above the laboratory reported detection limits <br /> NA=Sample not analyzed for this constituent <br /> *=the sample chromatogram does not match the standard chromatogram and the result is an estimated value <br /> **=high surrogate recovery for TPH-G and BTEX due to matrix interferences <br /> P:13000_prj13024 CSUS-Multi-Campus13024A GWMIQMlt12005 MaylHistorical Data Table.doc <br />