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Gasoline
<br /> DTW GWE B T E X MTBE TPH-G Oxygenates!
<br /> Additives
<br /> EPA Method: (602)1(80218) {602)1(80218) (602)1(80218) (602)1(80218) (602)1(8260)1 8015m
<br /> 80218
<br /> Detection Limits: feet feet 0.3 IL 0.3 IL 0.3 /L 0.6 IL 1.13 !L 0.05 m IL 0.5-13.0 pg1L
<br /> MON.WELL
<br /> TOC ELEV. (DATE)
<br /> MW-120 10125!01 34.52 -19.53 170 240 72 430 <10 2.4 NA
<br /> 14.99 119!02 33.53 -18.54 35 51 22 109 <1.0 0.76 NA
<br /> 4!10!02 32.61 -17.62 16 19 13 48 <5.0 0.53 NA
<br /> 713102 33.54 -18.55 2.7 1.1 2.7 2.1 8.5 0.12 NA
<br /> 10/15102 3680 -21.81 1.3 0,5 1.2 <1 0 <5,0 0.55 NA
<br /> 1115!03 35.78 -20.79 0.5 <0.5 0.6 <1.0 <0.5 <0.05 <0.5-<13
<br /> 4118103 34.80 -19.81 0.8 <0.5 0.8 <1.0 <D.5 0.089 <0.5-<13
<br /> 7125!03 36.39 -21.40 <0.5 <0.5 <0.5 <1.0 <0.5 <0.05 <0.5-<20
<br /> 1119103 37.79 -22,80 <0,5 <0.5 <0.5 <1.0 <0 5 <0.05 <0.5-<20
<br /> 1130!04 37.06 -22.07 <0,5 <0.5 <0.5 <1.0 <0.5 0.054
<br /> SV-1 1116!97 41,000 17,000 3,300 1 6,200 1 [1,4001 1 120 NA
<br /> 1115!00 1,100 34 120 250 1,100 4.1 N D
<br /> 712!02 210 1 3.0 31 110 1,000 1.6 NA
<br /> SV-2 4123198 49,000 66.000 31200 17,000 26,000 270 ND
<br /> 712!02 53,000 36,000 5,100 24,000 ND 4,000 190 NA
<br /> SV-3 7118197 71,000 73,000 3,900 19,000 35,0001 280 NA
<br /> 10/14/99 9,600 2,100 440 1,400 14,000 25 NA
<br /> 712!02 22,000 8,700 2,000 7,900 29,000 97 NA
<br /> SV-4 7122198 71,000 47,000 1,700 9,400 170,000 390 ND
<br /> 7111100 560 110 34 60 46,000 0.8 NA
<br /> 712102 73,000 62,000 4,700 19,000 740,000 300 NA
<br /> 10/15/02 93,000 96,000 4,600 18,000 730,000 450 NA
<br /> 1115103 82,000 74,000 9,800 24,000 5313,000 710 <5,0,0-
<br /> <130,OOD
<br /> 4117!03 97,000 93,000 5,000 23,200 530,000 390 34,000(TBA)
<br /> 7125103 80,000 80.000 4,400 20,200 550,000 500 80,000 TBA
<br /> 11!9103 8'.66 86,000 77,000 5,000 21,700 520,000 350 24,000 TBA
<br /> 1130104 90,000 79,000 4,700 21,700 350,000 380 130 TBA
<br /> SV-5 10122/97 55,000 73,000 3,900 19,000 37,000 290 ND
<br /> 712102 53,000 58,000 5,700 29,000 19,000 260 NA
<br /> SV-6 4121199 65,000 27,000 2,800 13,000 8,600 200 ND
<br /> 712!02 36,000 13,000 2,900 8,000 6,000 110 NA
<br /> SV-7 811196 91,000 75.000 3,000 18,000 7,800 360 NA
<br /> 10!23198 90,000 77,000 3,300 18,000 1.800 360 ND
<br /> 712102 73,000 57,000 4,300 22,000 ND 4,000 250 NA
<br /> SV-8 1121198 87,000 67.000 3,200 17,000 6,400 310 ND
<br /> 712102 76,000 45,000 4,100 20,000 3,600 NO 1,000 NA
<br /> SV-9 4!2197 25,000 ND 2,300 1,900 79,000 53 NA
<br /> 4112100 NQ 150 ND 150 ND 150 ND 300 9,700 ND 25 NA
<br /> 712!02 35 7.2 5.4 11 380,600 27 NA
<br /> DTW:depth to groundwater
<br /> GWE:groundwater elevation
<br /> TQC ELEV.:top of well casing elevation
<br /> 8,T,E,X:benzene,toluene,ethyl benzene,and total xylenes
<br /> TPN-G:total petroleum hydrocarbons,quantified as gasoline
<br /> MTBE: methyl tertiary butyl ether
<br /> ND=none detected at or above laboratory reported detection limit
<br /> ND(X)=none detected to a level of X.
<br /> NA=not tested for this analyte
<br /> NS:not sampled
<br /> #=nnouitur Well paved ovef afid nut locaied until after quarterly event was complete,DT4"u not take,
<br /> Notes:
<br /> 1)As of the fourth quarter 1999,MTBE was anaVyzed by EPA Method 602; groundwater monitoring for gasoline oxygenates/additives other than
<br /> MTBE was discontinued.
<br /> 2)From October 1996 through July 1997,MTBE was analyzed by EPA Method 602,but the result was not confirmed by E=PA Method 8260.
<br /> 3)As of the third quarter 2000, MTBE and BTEX are analyzed by EPA Method 8021 B.
<br /> 4)AS of the fourth quarter 2002,MTBE and BTEX are analyzed by EPA Method 8020.
<br /> 5)As of the first quarter 2003,groundwater monitoring for other oxygenates/additives was reinstated.The selected oxygenates/additives include
<br /> methyl tert butyl ether(MTBE),ethanol(EtOH),tertiary-butanol(713A),di-isopropyl ether,(DIRE),ethyl-tert butyl ether(ETBE),tert-amyl methyl
<br /> ether(TAME),1,2-dichlaroethane(1,2-DCA),and 1,2-dibromoethane(EDB)and were analyzed by EPA Method 82608.
<br /> �)Elevations surveyed November 26,2001 to NAD 83/NAVO 88 referenced to NGS benchmark,JS1384.
<br /> 6
<br /> 1707 Data January 2004(Table A) Page 6 of 6
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