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Gasoline
<br /> DTW GWE B T E X MTBE TPH-G Oxygenates/
<br /> Additives
<br /> EPA Method (602)1(8021B) (602)/(8021B) (602)/(80218) (602)/(8021B) (602)1(8260)1 50301LUFT
<br /> 8021B
<br /> Detection Limits feet feet 0 3 /L 0 3 1L 0 3 /L 0 6 1L 1 0&L 0 05 mall- 0 5-13 0 p /L
<br /> MON WELL (DATE)
<br /> TOC ELEV
<br /> SV-3 7/1811997 71,000 73 000 3 900 19 000 (35 000] 280 NA
<br /> 10/14/1999 9 600 2 100 440 1 400 14,000 25 NA
<br /> 7/2/2002 22,000 8 700 2,000 7,900 29,000 97 NA
<br /> SV-4 7/22/1998 71 000 47 000 1 700 9 400 170,000 390 ND
<br /> 7/11/2000 560 110 34 60 46,000 08 NA
<br /> 7/2/2002 73,000 62,000 4,700 19 000 740,000 300 NA
<br /> 10/15/2002 93 000 96 000 4 600 18 000 730,000 450 NA
<br /> 1/15/2003 82,000 74,000 9,800 24,000 530,000 710 <5 000-
<br /> 4/17/2003 97,000 93 000 5 000 23,200 530,000 <130,000 390 34,130 TBA
<br /> 5V-5 10/22/1997 55 000 73,000 3,900 19,000 37,000 290 ND
<br /> 7/2/2002 53 000 58 000 5 700 29 000 19 000 260 NA
<br /> SV-fi 4/21/1999 65 000 27 000 2 800 13 000 8 600 200 ND
<br /> 7/2/2002 36,000 13,000 2,900 8,000 6,000 110 NA
<br /> SV-7 8/1/1996 91 000 75 000 3 000 18 000 7,800 360 NA
<br /> 10/23/19981 90,000 1 77 000 1 3 300 1 18,000 1 1,800 360 ND
<br /> 7/2/2002 73 000 57 000 4 300 22 000 ND 4 000 250 NA
<br /> FSV-8 112111998 87 000 67,000 3,200 17 000 6 400 310 ND
<br /> 7/2/2002 76,000 45,000 4,100 20,000 3,600 ND i 000 NA
<br /> SV-9 4/2/1997 25 000 ND 2 300 1,900 79 000 53 NA
<br /> 411212000 ND 150 ND 150 ND 150 ND 3009,700 ND 25 NA
<br /> 7/2/2002 35 72 54 11 380,000 27 NA
<br /> DTVV depth to groundwater
<br /> WE roundwater elevation
<br /> C ELEV top of well casing elevation
<br /> T,E,X benzene,toluene,ethyl benzene,and total xylenes
<br /> TPH-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 /> 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 oxygenates/additives was reinstated The selected oxygenatesladditives include
<br /> methyl tent butyl ether(MTBE) ethanol(EtOH),tertiary-butanol(TBA),di-isopropyl ether (DIPE),ethyl-tert butyl ether(ETBE),tert-amyl methyl
<br /> ether(TAME), 1,2-dichloroethane(1,2-DCA), and 1,2-dtbromoethane(EDB)and were analyzed by EPA Method 8260B
<br /> 6)Elevations surveyed November 26,2001 to NAD 831NAVD 88 referenced to NGS benchmark JS1384
<br /> 1707 Data 2nd 03 xis(Table A) Page 6 of 6
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