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wl Y TABLE A (continued) • Constituent B T E X MTBE TPH G EPA Method (602/8020/ (602/8020/ (602/8020/ (602/8020/ (6021 8260) (5030/LUFT/ 8021B) 80218) 8021B) 8021 B) 8015m) Detection Limits 03 03 0 3 06 E 0 005 µg/L µ µ Kg/L Ng/L- mg/L MW 7 09/22/1994 ND 54 2 1 94 NA 12 02/14/1995 24 26 65 13 NA 057 05104/1995 15 76 ND 49 NA 025 08110/1995 1 1 49 064 27 NA 043 04/0311997 06 22 ND ND [4 8] 019 07/21/1997 04 16 ND ND [3 61 013 10/23/1997 05 22 ND ND NDv 018 01/22/1998 08 3 ND ND NDv 021 04/24/1998 059 24 ND ND NDv 0 17 07/2311998 l l 12 ND ND NDv Ol i 10121/1998 04 19 ND ND NDv 01 01/20/1999 04 18 ND ND NDv 01 04/23/1999 03 14 ND ND NDv 008 07/28!1999 ND 12 ND ND NDv ND 10/15/1999 ND 08 ND ND NDv 006 01119/2000 ND 08 ND ND NDv 006 04/1912000 ND ND ND ND NDv 011 07/13/2000 ND 08 ND ND NDv ND 10/13/2000 ND ND ND ND NDv ND 01/02/2001 1 2 ND ND ND NDv 00976 04/13/2001 ND ND ND ND NDv ND • 07/1912001 <03 <03 <03 <06 <t 0v <005 10/09/2001 09 <G5 <0 5 <1 0 <0 5v 0 091 01/08/2002 <05 <05 <05 <10 14v <005 04/09/2002 <0 5 <0 5 <0 5 <l 0 1 5 v 006 07/05/2002 <0 5 <05 <0 5 <1 0 2 0 v 0 056 10/17/2002 <0 5 <0 5 <0 5 <1 0 3 3v 0 055 01/13/2003 <0 5 <0 5 <0 5 <1 0 <5 00 006 04/04/2003 <0 5 <0 5 <0 5 B T E,X=benzene toluene ethyl benzene,and xylene ND=none detected at or above laboratory detection hunt TPH G=total petroleum hydrocarbons,quantified as gasoline ND(X)=none detected to a level of X MTBE=methyl tertiary butyl ether *=detection hint raised due to interference from non-target analytes NA=not tested for this analyte [x]=EPA Method 602 analysis indicates a concentration of x result is not confirmed by EPA Method 8260B,however subsequent analyses by EPA Method 8260 indicates MTBE is present. v=other oxygenates/additives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits =Sample chromatogram does not resemble typical gasoline standard chromatogram The sample was further analyzed and cis-1,2-Dichloroethene Trichloroethene and Tetrachloroethane were detected at concentrations of 16 5,21 2 and 66 1µg/L &=other oxygenates/additives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits with the exception of Di isopropyl ether,which was detected above the laboratory reported detection]mat. **=EPA Method 602 indicated that MTBE was present at 240µg/L However,EPA Method 8260 indicated in the previous monitoring event that MTBE was not present in the monitor well at or above the laboratory reported detection litrat #=Analyzed by EPA Method 8020 •