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Historical Groundwater Monitoring Data <br /> Eckert Gold Storage <br /> Gasoline <br /> Benzene Toluene Ethyl Benzene Total Xylenes TPH-G TPH-D MTBE Oxygenates! DTW GWE <br /> Additives <br /> Analytical Method: 82606 8250B 82606 8260E 503018015M $510/8015M 82608 82606 <br /> Detection Limit: 0.3 u 1L 0.3 u 1L 0.3 u /L 0.6 u /L 0.05 m 1L 0.05 m /L 1.0 u 1L feet feet <br /> Monitor Well <br /> TOC Elev. Sample Date <br /> MW-8 1/5/2000 53 31 34 100 0.9 ND 4.1 NA <br /> 37.76 3/27/2000 33 5.9 47 46 0.9 NO 9.0 NA <br /> 6/23/2000 1,600 42 710 1,600 17 NO 19 NA <br /> 9/8/2000 2,900 70 1,800 4,200 33 ND 36 NA <br /> 12/29/2000 310 ND 140 12 2.8 0.34 NO NO <br /> 3/5/2001 75 ND 24 NO 1 NO NO ND <br /> 6/4/2001 1,300 25 220 920 10 NO ND NO <br /> 9/10/2001 2,000 33 1,800 1,800 21 ND 34 ND <br /> 12/17/2001 572 ND 888 38 3.4 ND NO NO <br /> 2/2712002 140' 0.6 160` 70 0.55 <0.05 <0.5 <0.5-<5.0 16.46 21.30 <br /> 6/26/2002 1,100 24 550 1,617 9.8 <0.05 32 <5.0-<50 18.52 19.24 <br /> 9/3012002 480 2.3 51 27 5.4 NA 9.2 <2.0-<20 20.18 17.58 <br /> 12/912002 16 <0,5 5.9 <1.0 0.34 NA 4.4 17(TBA);2.6 18.12 19.64 <br /> (1,2-D A <br /> 3/28/2003 50 <0.5 15 5.0 0.97 NA 9.0 35(TBA);1.4 17.63 20.13 <br /> (1,2- CA <br /> DW 2/2712002 <0.5 <0.5 <0.5 <1.0 '40.05 <0.05 <0.5 <0.5-<5.0 NM <br /> 6/26/2002 <0.5 <0.5 <0.5 <1.0 <0.05 <0.05 <0.5 <0,5-<5,0 NM <br /> 913012002 <0.5 <0.5 <0.5 <1.0 <0.05 NA <0.5 <0.5-<5.0 NM <br /> 12/112002 <0.5 <0.5 <0.5 <1.0 <0.05 NA <0.5 <0.5-<5.0 NM <br /> 4 <br /> 812003 <0.5 <0.5 <0.5 <1.1 '40.05 NA <0.5 <0.5-<5.0 NM <br /> Note:Data collected prior to Februarys 27,2002 waa provided by WHF,Inc. <br /> Detection Limits vrcru amended as of the February 27,2002 groundwater monitoring event(See Lab.Reports for detection limits) <br /> Elevations measured fiom the top of the well casing andare referenced to NGS Benchmark HS4486,elevatitm 35.03 fent using NAVD 88 datum, <br /> units: <br /> ma/L:milligrams per liter,puts per million(ppm) <br /> Wz- <br /> per liter,parts per billion(ppb) <br /> B.T,E,X:benzene,toluene,ethyl benzene,total xylenes - <br /> TPH-G:total petroleum hydrocarbons quantified as gasoline <br /> Gasoline oxygenates/additives-methyl tertiary bury]ether(MTBE);ethanol;ternary butanol(TBA);di-isopropyl ether(DIPE);ethyl tertiary butyl ether JESBE);tertiary amyl methyl ether(TAME),1,2-dichlorcethane(1,2-DCA) <br /> DTW:depth to water <br /> GWE:groundwater elevation <br /> ND:not detected at or above the laboratory reported detection limits <br /> NA;not analyzed <br /> NM:not measured <br /> NS:not sampled <br /> estimated concentration <br /> Page 3 of 3 <br />