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~~ <br />Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487(800) 334-5493 <br />Metals Analysis <br />Calcium, dissolved M200.7 ICP 63.2 mg/L 0.2 1 12/05/02 22:52 kdw <br />Iron, dissolved M200.7 ICP 0.30 mglL 0.01 0.05 12/07/02 5:27 bf <br />Iron, total M200.7 ICP 1.41 mg/L 0.01 0.05 12/11/02 18:07 kdw <br />Iron, total recoverable M200.7 ICP 1.41 mg/L 0.01 0.05 12/14/02 19:30 bf <br />Lead, dissolved M200.8 ICP-MS 0.0001 B mg/L 0.0001 0.0005 72/14/02 20:52 Icj <br />Magnesium, dissolved M200.7 ICP 14.6 mg/L 0.2 1 12/07/02 5:27 bf <br />Magnesium, total M200.71GP 73.2 mglL 0.2 1 72/71/02 1B:07 ktlw <br />Manganese, dissolved M200.7 ICP 0.154 mg/L 0.005 0.03 12/05/02 22:52 kdw <br />Manganese, total M200.7 ICP 0.187 mg/L 0.005 0.03 12/11/02 18:07 kdw <br />Potassium, dissolved M200.7 ICP 3.1 mg/L 0.3 1 12/07/02 5:27 bf <br />Selenium, dissolved M200.8 ICP-MS U mg/L 0.002 0.008 12/14/02 20:52 Icj <br />Sodium, dissolved M200.7 ICP 70.3 mg/L 0.3 1 12/07/02 5:27 bf <br />' Metals Prep <br />• Total Hot Plate M200.2 ICP 12/10/02 23:36 cdr <br />Digestion <br />Total Recoverable M200.21CP 12/12102 14:18 cdr <br />Digestion <br />Wet Chemistry <br />Alkalinity as CaC03 SM23200 -Titration <br />• <br />Bicarbonate as 308 mg/L 2 10 12/04/02 0:00 Izg <br />CaC03 <br />Carbonate as U mg/L 2 10 12/04/02 0:00 Izg <br />CaC03 <br />Hyd roxitle as CaC03 U mglL 2 10 12/04/02 0:00 Izg <br />Total Alkalinity 308 mg/L 2 10 12/04102 0:00 Izg <br />Chloride M325.2 - Colonmetric 24 mg/L 1 5 12/13/02 14:25 pll <br />Hardness as CaC03 SM23400 -Calculation 218 mg/L 1 7 12/18!02 0:00 talc <br />Lab Filtration SM 3030 B 12/02/02 10:40 cdr <br />Lab Filtration 8 SM 3030 B 12/02/02 13:08 cdr <br />AcidificaSon <br />Residue, Filterable M160.1 -Gravimetric 390 mg/L 10 20 12/0210214:14 mah <br />(TDS) @180C <br />Residue, Non- M160.2 -Gravimetric 6 8H mg/L 5 20 12109/02 13:39 Izg <br />Filterable (TSS) <br />t OSC <br />Sodium Absorption USGS - 11738-78 2.10 0.03 0.15 12118!02 0:00 talc <br />Ratio in Waler <br />Sulfate M375.3 -Gravimetric 30 mg/L 10 20 12/04/02 10:08 mah <br />REPIN.01.11.00.0 <br />L39523: Paee l l of 16 <br />Lorencito Coal Company ACZ ID: L39523-06 <br />Project ID: NEW ELK MINE Date Sampled: 11/26102 12:16 <br />Sample ID: PAW-9 Date Received: 11/27/02 <br />Sample Matrix: Ground Water <br />