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TABLE A(continued) • Constituent B T E X MTBE TPH-G (602/8020/ (602/9020/ (602/80201 (602/8020/ (8020/8260) (5030/Ll7FT/ EPA Method 80218) 80218) 8021B) 802113) 8015m) Detection Limits 03 03 0 3 06 1 0 005 Ag/L li µPQ Pg/L 11gIL mg/L MW 7 9/22)1994 ND 54 21 94 NA 12 2/1411995 24 26 65 13 NA 057 51411995 15 76 ND 49 NA 025 S/IOl1995 11 49 064 27 NA 043 4/3/1997 06 22 ND ND [4 81 019 7!21/1997 04 16 ND ND [3 6] 0 13 10/23/1997 05 22 ND ND NDw 0 18 1/22/1998 08 3 ND ND NDw 021 4/24/199S 059 24 ND ND NDw 0 17 7/23/1998 11 12 ND ND NDw 01 10/2111998 04 19 ND ND NDw 01 1/20/1999 04 19 ND ND NDw 0 1 4/23/1999 03 14 ND ND NDw 008 N28l1999 ND 12 ND ND NDw ND [0/15/1999 ND 08 ND ND NDw 006 1/19/2000 ND 09 ND ND NDw 006 4/19/2000 ND ND ND ND NDw Oil 7113!2000 ND 08 ND ND NDw ND 10/13/2000 ND ND ND ND NDw ND 1/7/2001 12 ND ND ND NDw 00976 4/13/2001 ND ND ND ND NDw ND 7118/2001 <03 <03 <0 3 <0 6 <l Ow <0 05 10/9/2001 09 <D5 <0 5 <10 <05V 0 091 1/8/2002 <0 5 <05 <0 5 <10 1 4 w <0 05 4/9/2002 <0 5 <0 5 <05 <10 15V 006 7/5!2002 <05 <0 5 <05 <10 20V 0 056 10/17/2002 <05 <05 W5 <10 33w 0055 1/13/2003 <0 5 <05 <0 5 <10 <5 0# 006 4/4/2003 e05 <0 5 <0 5 <10 <5 0# <0 05 7/10/2003 <0 5 <0 5 <0 5 <10 <5 00 <0 05 B T E X=benzene,toluene ethyl benzene and xylene ND=none detected at or above laboratory detection limit TPH-G=total petroleum hydrocarbons quantified as gasoline ND(X)=none detected to a level of X MTBE=methyl tertiary butyl ether *=detection lumt 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 9260B 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 its-1 2-Dichloroethene Tnchloroethene and Tetrachloroethane were detected at concentrations of 16 5 21 2,and 66 1µg2 &=other oxygenates/additives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection Imuts with the exception of Di-isopropyl ether which was detected above the laboratory reported detection limit **=EPA Method 602 indicated that MTBE was present at 240µg2 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 hnut #=Analyzed by EPA Method 8020