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I TABLE A I (Continued) Constituent B T E X MTBE TPH-Cr ' EPA Method (602) (602) (602) (602) (6021 (5030) 8260) Detection Limits 03 03 03 06 10 005 µg/L µg/L µg/L µg/t- }ig/L mg/L ' NIW-7 9/22/94 ND 5 4 21 94 NA 1 2 2/14/95 24 26 65 13 NA 057 ' 514195 15 76 ND 49 NA 025 8/10/95 1 1 49 064 27 NA 043 ' 4/3/97 06 22 ND Nb 1481 0 19 7/21/97 04 l 6 ND ND [3 61 0 13 10/23/97 05 22 ND ND NDv 0 18 ' 1/22/98 as 3 0 ND ND ND v 021 4124198 059 24 ND ND NDv 01 7/23/98 I 1 12 ND ND NDv 01 10/21/98 04 19 ND ND NDv 01 1/20/99 04 1 9 ND ND NDv 01 4/23199 03 14 ND ND NDv 008 7128199 ND 12 ND ND ND• ND 10/15/99 ND 08 ND ND NDv 006 1/19/00 ND 08 ND ND NDv 006 4/19100 ND ND ND ND NDv 011 ' 7/13/00 ND1' 0 8F ND r NDP NDv ND 10/13/00 W ND r ND r ND r ND• ND B 1 1;X=benzene toluene ethyl benzene,and xylene ND=none detected at or above laboratory detection limit fl'H-G=total petroleum hydrocarbons quantified as gasoline ND X=none detected to a level of X MTBE=methyl tertiary butyl ether *=detection limit raised due to elevated petroleum hydrocarbon result I DIPE=Di-isopropyl ether NA=not tested tar this analyte [x]=EPA Method 602 analysis indicates a concentration of Y result is not confirmed by EPA Method 8260,however Future analysis by EPA Method 8260 may indicate that MTBE is not present v=other oxygenates/additives were analyzed by EPA Method 8260 and were not detected at or above the laboratory reported detection limits ♦ 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 RIPE which was detected above the laboratory reported detection limit **=EPA Method 602 indicated that MTBE was present at 240}µ8/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 limit J'=as of third quarter 2000 BTEX were analyzed by EPA Method 80218 I