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Gasoline
<br /> DTW GWE B t T E X MTBE TPH-G Oxygenates!
<br /> Additives
<br /> EPA Method (602)/(8021B)/ (602)/(80218)! (602)!(8021 B)1 (602)1(8021 B)/ (602)/(8021 B)1 8016m 8260B
<br /> 46 802a 182606 8020/82606 8020/82606 80201 82608 (8020)/8260B
<br /> WELL ID
<br /> TOC ELEV) (DATE) (feet) (feet) (µg/L) (µg/L) (µg/L) (µ91L) (µglL) (mg/L) (µg/L)
<br /> SV 1 1/16/1997 41 000 17 ODO 3 300 6200 1 4001 120 NA
<br /> 1/15/2000 1100 34 120 250 1,100 41 NO
<br /> 7/2/2002 210 30 31 110 1 000 is NA
<br /> 9/12/2005 2 660 88 2 1 590 1 299 66 6 11 9 <50<2 AO
<br /> OO
<br /> 4/23/1998 49 000 66 000 3'200 17 000 26 000 270 ND
<br /> 7/2/2002 53 000 36,000 5.100 24.000 ND(4,000) 190 NA
<br /> 9/12/2005 25 400 10.300 3.750 16,350 2 000 102 <5DO-<20.000
<br /> SV-3 7/18/1997 71 000 73 000 3 900 19 000 35 OGOI 28O NA
<br /> 10/14/1999 9,600 2,1 DO 440 1,400 14,000 25 NA
<br /> 7/2/2002 22 060 8 700 2000 7 900 29 ODO 97 NA
<br /> 911212005 21,500 4,630 4,790 16,640 4,870 101 <500-<20,000
<br /> SV-4 7/2211998 71 000 47 000 1 700 9 400 170 000 390 NO
<br /> 711112000 560 110 34 60 46 000 08 NA
<br /> 7/2/2002 73 OOO 62 000 4,700 19 000 740,000 300 NA
<br /> 10115/2002 93,000 96 O00 4,60D 18,000 730,0013 450 NA
<br /> 1115/2003 82 000 74 000 9 800 24 000 530 000 710 <5 000-<130 000
<br /> 4117/2003 97,000 93 0GG 5,000 23 200 530 000 390 34 000 TBA
<br /> 7/25/2003 80 000 80 ODO 4 400 20 200 550,000 500 80 000 TBA
<br /> 1119/2003 86 000 77 ODD 5,000 211,700 520 000 360 24 000 TBA
<br /> 1!30!2004 9(),000 79,000 4 700 21,700 350,000 380 130 BA
<br /> 5!712004 85,000 81.000 5.200 24,700 370,000 340 <500-<20,000
<br /> 7122!2004 78,000 70,000 4,800 23,000 410,000 260 <500-<20,000
<br /> 10/14/2004 67 000 64 000 4 100 20 000 310 000 250• <500-<20 DDO
<br /> 1/24/2005 77 000 68 000 4 900 24 000 320 000 360 <500-<20 000
<br /> 4/13/2005 77,000 58 000 3,900 18 BOO 320,000 280 <50D-<20,000
<br /> 7/28/2005 63,000 53 600 3,970 17,850 317 000 355 <500-<20,000
<br /> 9/12/2005 49,800 39,000 <5,000 <15.000 485 000 235 <5000-<200 000
<br /> 10/1312005 72 700 64 400 1 3 510 15 070 295 000 275 <500-<20 000
<br /> 1/27/2006 27 200 20 400 2 300 8 520 177 000 174 <500-<20 000
<br /> 5118/2006 24,900 13 600 1 280 4 330 101 000 102 <500-<20 000
<br /> SV-5 10/22!1997 55 000 73 000 3 900 19 000 37 000 290 NO
<br /> 7/212002 53,000 58 000 5,700 29 000 19,000 260 NA
<br /> 9/12/2005 46 200 47,2130 4 900 22 240 4.400 219 <500-<20.000
<br /> SV-6 4/21/1999 65 000 27 000 2 800 13 000 8 600 200 NO
<br /> 712/2002 36 000 13 000 2 900 8 000 6 000 110 NA
<br /> 9/12/2005 67,000 3.260 3.130 4688 1 280 137 <500-<20 000
<br /> SV 7 8/1/1996 91 000 75 000 3 000 18 000 7 800 360 NA
<br /> 10/23/1998 90 000 77 000 3 300 113000 1 800 360 NO
<br /> 712/2002 73,000 97,000 4,300 22,000 NO(4,000) 250 NA
<br /> 9/12/2005 33,900 41,800 3.330 20.840 <500 205 <500 <20,000
<br /> $V-8 1/21/1998 87 000 67 000 3200 17 000 6 400 310 ND
<br /> 712/2002 76,000 45,000 4,100 20,000 3,600 NO(1,000) NA
<br /> 9/12/2005 65,300 33,100 3,310 10.330 2,130 188 <500 <20,000
<br /> SV 9 4/2/1997 25 000 ND 2 300 1 900 79 000 53 NA
<br /> 4/12/2000 NO 150 ND 150 NO 150 NO 300 9 700 ND 25 NA
<br /> 7/2/2002 35 72 54 11 380 000 27 NA
<br /> 9/12/2005 <50 <50 <50 <150 16,800 04 <50-<2000
<br /> DTW depth to groundwater B T E X benzene toluene ethyl benzene and total xylenes
<br /> GWE groundwater elevation TPH-G total petroleum hydrocarbons quantified as gasoline
<br /> TOC ELEV top of well casing elevation MTBE methyl tertiary butyl ether
<br /> MW=Monitoring Well µg/L=micrograms per Iger=parts per billion(ppb)
<br /> SV=Soil Vapor Extraction Well mg/L=milligrams per Iner=parts per million(ppm)
<br /> ND=none detected at or above laboratory reported detection limit
<br /> NO(X)=none detected to a level of X
<br /> NA=not tested for this analyte
<br /> NS=not sampled
<br /> #=monitoring well paved over and not located until after quarterly event was complete DTW not taken
<br /> =the sample chromatogram does not match the standard gasoline chromatogram
<br /> Notes
<br /> 1) As of the fourth quarter 1999 MTBE was analyzed 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 EPA Method 8260
<br /> 3) As of the third quarter 2000 MTBE and BTEX are analyzed by EPA Method 80218
<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 oxygenatesladdstives was reinstated The selected oxygenates/additives include
<br /> MTBE ethanol(EtOH) tertiary-butanol(TBA) di-isopropyl ether (RIPE) ethyl-ter,butyl ether(ETBE) Cert-amyl methyl ether(TAME)
<br /> 1 2-dichloroethane(1 2 DCA) and 1 2-dibromoethane(EDB)and were analyzed by EPA Method 8250B
<br /> 6) Elevations surveyed November 26 2001 to NAD 83/NAVO 88 referenced to NGS benchmark JS 1384
<br /> 7) As of the fourth quarter 2004 BTEX and other oxygenates/addRlves are analyzed by EPA Method 8260B(current laboratory analytical method is shown
<br /> in bold-faced type)
<br /> P 11000_pgV 707 CanepMl 707F Canape PeurictitiReportsXQMRti200612na gtMppendudC1 1707 Data May 2008 As Page 10 of 10
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