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GEOMATRIX <br /> TABLE 3 Page 3 of 3 <br /> GROUNDWATER ANALYTICAL DATA <br /> Volatiles (EPA Method 8260B) Dissolved <br /> 1 Monitoring TPHg2Results to K /L3 Lead <br /> well, Date /L B T E X MTBE /I, <br /> MW3-4 12/17/04 <50 <0 5 <0 5 <0 5 <0 5 na na <br /> continued 02/24/05 <50 <0 5 <0 5 <0 5 <0 5 na na <br /> MW3-5 02/20/037 <20 <0 5 <0 5 <0 5 <0 5 <0 5 37 <br /> 05/29/03 <50 <0 5 <0 5 <0 5 <0 5 na na <br /> 08/22/03 <50 <10 222 ill 336 na na <br /> 10/16/03 <50 <10 <10 <10 <10 na na <br /> 02/26/04 <50 <10 <10 <10 105 na na <br /> 04/01/04 <20 06 <0 5 <0 5 <1 0 na na <br /> 05/18/04 <20 <0 5 <0 5 <0 5 <1 0 na na <br /> 05/21/04 <100 <0 5 <0 5 <0 5 <1 0 na na <br /> 09/23/04 <50 <0 5 <0 5 <0 5 <0 5 <0 5 na <br />' 12/17/04 <50 <0 5 <0 5 <0 5 <0 5 na na <br /> 02/24/05 <50 <0 5 <0 5 <0 5 <0 5 na na <br /> MW3-6 02/20/037 6,800 1,700 80 69 280 <0 5 3 1 <br /> 05/29/03 1,000 1,030 85 59 110 na na <br /> 08/22/03 7,970 1,890 61 4 65 8 249 na na <br /> 10/16/03 688 875 253 166 827 na na <br /> 02/26/04 312 792 207 106 545 na na <br /> 04/01/04 2,900 890 430 320 91 na na <br /> 05/18/045 ns ns ns ns ns ns ns <br /> 05/21/04 327 411 176 114 450 na na <br /> 09/23/04 3,800 1,800 43 33 160 <25 na <br /> 12/17/04 3,900 1,300 <50 <50 64 na na <br /> 02/24/05 2,700 1,200 <25 <25 54 na na <br /> 1 Monitonng well locations are shown on Figure 2 <br /> t 2 TPHg=total petroleum hydrocarbons quantified as gasoline analyzed using U S Environmental Protection Agency <br /> (EPA)methods 8015Cm or 8260B Results reported in micrograms per liter(µg/L) <br /> 3 B=benzene,T=toluene,E=ethylbenzene,X=total xylenes(sum of m,p-xylene and o-xylene), <br /> BTEX analyzed using U S EPA method SW8260B <br /> MTBE=methyl tertiary butyl ether Results reported in gg/L na=not analyzed for constituent <br /> ND=not detected for constituent ns=not sampled U=data are qualified as not detected <br /> because concentration is less than five times the blank concentration <br />' 4 Dissolved lead analyzed using EPA Method 6010B Results reported inµg/L <br /> 5 Wells MW3-1 and MW3-6 were not sampled on May 18,2004 <br /> 6 Well MW3-3 was not sampled because a temporary earth ramp covered the well location <br /> 7 Sample was also analyzed for 1,2-dichloroethene,dusopropyl ether,ethyl tertiary butyl ether, and tertiary amyl methyl <br /> ether using EPA Method 8260 These constituents were not detected <br /> 8 <=less than the detection limit for purpose of reporting <br /> 1 <br /> 1 <br /> 1%6000s16437 0001Archiv66437-028 <br /> 1 <br />