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ACZ Laboratories, Inc. <br />9773 Downhill Oriv» Sleamhn»t Snrinas. CO 80487!8001 334-5493 <br />Wet Chemistry <br /> <br />Alkalinity as CaC03 SM23206 -Titration <br />Bicarbonate as 209 mg/L 2 20 07/10/06 0:00 ct <br />Bicarbonate <br />Carbonate as 38 mg/L 2 20 07/10/06 0:00 ct <br />Cartonate <br />Hydroxide as U mg/L 2 20 07/10/06 0:00 ct <br />Hydroxide <br />Total Alkalinity 235 mg/L 2 20 07/10/08 0:00 ct <br />Chemical Oxygen M410.4 20 B mg/L 10 20 07/07/0615:18 jR <br />Demand <br />Lab Filtration SM 3030 B 07106/06 16:45 rea <br />pH (lab) M150.1 - Electrometric <br />pH 8.7 H units 0.1 0.1 07/10/060:00 ct <br />pH measured at 21.3 C 0.1 0.1 07/10!06 0:00 ct <br />Residue, Filterable M160.1 - Gravimelric 1290 mg/L 10 20 07/06/06 16:29 jR <br />(TDS) @180C <br />REPIN.02.06.05.01 • Please refer to Qua/ifler Reports /or detail. <br />L57502: Page 2 of 8 <br />Twentymile Coal Co. ACZ Sample ID: L57502-01 <br />Project ID: Date Sampled: 07/06/06 14:18 <br />Sample ID: 6MN Date Received: 07/06/06 <br />Sample Matrix: Surface Water <br />