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DGROUNDWATER ANALYTICAL DATA Volatiles (EPA Method 8260B) Dissolved n Monttortng TPHg2 Results to Ft /L3 Lea d4 J Well Date /L B T E X MTBE /L MW3-5 08/22/03 <50 <1 0 222 1 11 336 na na conttnued 10/16/03 <50 <10 <10 <10 <10 na na 02/26/04 <50 <10 <10 <10 105 na na 04/01/04 <20 06 <0 5 <0 5 <1 0 na na 05/18/04 <20 <0 5 <0 5 <0 5 <1 0 na na 05/21/04 <100 <0 5 <0 5 <0 5 <1 0 na na 09/23/04 <50 <0 5 <0 5 <0 5 <0 5 <0 5 na I2/17/04 <50 <0 5 <0 5 <0 5 <0 5 na na D MW3-6 02/20/037 6,800 1,700 80 69 280 <0 5 3 1 05/29/03 1,000 1,030 85 59 110 na na 08/22/03 7,970 1,890 614 65 8 249 na na D 10/16/03 688 875 25 3 166 827 na na 02/26/04 312 792 207 106 545 na na 04/01/04 2,900 890 43 0 320 91 na na a 05/18/045 ns ns ns ns ns ns ns 05/21/04 327 411 176 114 450 na na 09/23/04 3,800 1,800 43 33 160 <25 na LP12/17/04 3,900 1,300 <50 <50 64 na na 1 Monitoring well locations arc shown on Figure 2 2 TPHg=total petroleum hydrocarbons quantified as gasoline analyzed using U S Environmental Protection Agency (EPA)methods 8015M or 8260B Results reported in micrograms per liter(µg/L) 3 B=benzene,T=toluene, E=ethylbenzene,X=total xylenes(sum of m,p-xylene and o-xylene), MTBE=methyl tertiary butyl ether Results reported inµg/L na=not analyzed for constituent ND=not detected for constituent ns=not sampled U=data are qualified as not detected because concentration is less than five times the blank concentration 4 Dissolved lead analyzed using EPA Method 6010B Results reported sn j,g/L a 5 Wells MW3-1 and MW3-6 were not sampled on May 18,2004 6 Well MW3-3 was not sampled because a temporary earth ramp covered the well location 7 Sample was also analyzed for 1,2-dichloroethene,drnsopropyl ether,ethyl tertiary butyl ether, and tertiary amyl methyl ether using EPA Method 8260 These constituents were not detected 8 <=less than the detection limit for purpose of reporting a