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Table A—Historical Laboratory Analytical Data (continued) •' GASOLINE OXYGENATES/ADDITIVES B 'r E X TPH-G TPH-D MTBE Other Gasoline Oxygenates/Additives Detection Limits: 0.3 0.3 0.3 0.6 0.05 0.05 1.0 See Lab Reports µg11 µg11 µg/1 µg/l mg/l mg/l µg/1 41 Analytical Method: 8260E 8260B 8260B 8260B 50301 35101 8260B 8260B 8015M 8015M Sample I,D./Date MW8-1/5/00 53 31 34 100 0.9 ND 4.1 NA MW8-3127100 33 5.9 47 46 0.9 ND 9.0 NA MW8-6/23/00 1,600 42 710 1,600 17 ND 19 NA MW8-918/00 2,900 70 1,800 4,200 33 ND 36 NA M W8-12/29/00 310 ND 140 12 2.8 0.34 ND ND MW8-3/5/01 75 ND 24 ND 1.0 ND ND ND MW8-6/4/01 1,300 25 220 920 10 ND ND ND MW8-9110101 2,000 33 1,800 1,800 21 ND 34 ND MW8-12/17/01 572 ND 888 38 3.4 ND ND ND MW8-2/27/02 140* 0.8 160* 70 0.55 ND <0.5 ND MW8-6/26/02 1,100 24 650 1,617 9.8 ND 32 ND+ DW-2/27102 <0.5 <0.5 <0.5 <1.0 ND ND <0.5 ND DW-6/26102 <0,5 <0.5 <0.5 <1.0 ND ND <0.5 ND Units: Analytical: mg/L=milligrams per liter—parts per million(ppm) B,T,E,X=benzene,toluene,ethyl benzene,total xylenes µg/L=micrograms per liter=parts per billion(ppb) TPH-G=total petroleum hydrocarbons quantified as gasoline Gasoline oxygenates/additives= methyl tertiary butyl ether(MTBE),ethanol, tertiary butanol, di-isopropyl ether(DIPE), ethyl tertiary butyl ether(ETRE), tertiary amyl methyl ether(TAME), 1,2-dichloroethane(1,2-DCA) ND=not detected at or above the laboratory reported detection limits NA=not analyzed *—estimated concentration ♦ = all other oxygenates/additives were not detected at or above laboratory reporting limits f = all other oxygenates/additives were not detected at or above raised laboratory reported detection limits,see laboratory reports for actual detection limits P;\347 IA Eckert Cold StoragelQuarterly Monitoring Repons4listorical.doc Page 7 of