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�r TABLE A (Continued) Constituent B T E X MTBE TPH-G ' EPA Method (602) (602) (602) (602) (6021 (5030) 8260) Detection Limits 03 03 03 06 l 0 005 }Lg/I µg/l µ211 µg/1 µgA mg/l MW-7 9/22/94 ND 54 2 1 94 NA 1 2 2/14/95 24 26 6 5 13 NA 0 57 514195 15 7 6 ND 4 9 NA 025 8/10/95 1 1 49 064 27 NA 043 4/3/97 06 2 2 ND ND [4 81 0 19 V21197 04 1 6 ND ND [-16] 0 13 10/23/97 05 22 NO ND NDv 0 18 I 1/22198 08 10 ND ND NDv 021 4/24/98 059 24 ND ND NDv 0 17 7123198 11 12 ND ND NDv 0l 10/21/98 04 1 9 ND ND NDv 01 1/20/99 04 1 8 ND ND NDv 0 1 4!23199 01 14 ND ND NDv 009 7/28/99 ND l2 ND ND NDv ND 10/15/99 N1) 08 ND ND NDv 006 1/19/00 ND 08 ND ND NDv 006 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 limit raised due to elevated petroleum hydrocarbon result DIPE=D1-isopropyl ether NA=not tested for this analyte jx]=EPA Method 602 analysis indicates a concentration of x 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 DIPS which was detected above the laboratory reported detection limit **=EPA Method 602 indicated that MTBE was present at 240 Ag/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 I