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L <br />Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 3345493 <br />?;CI <br />_r <br />• I D <br />L 7204 <br />01 <br /> Lorencito Coal Company ACZ Sample - <br />: <br />6 <br /> Project ID: Date Sampled: 01112108 11:30 <br /> Sample ID: LC-2 Date Received: 01115108 <br /> Sample Matrix: Surface Water <br /> <br /> Wet Chemistry <br /> <br /> Alkalinity as CaCO3 SM2320B - Titration <br /> Bicarbonate as 348 mg/L 2 20 01/16108 0:00 Icp <br /> CaCO3 <br /> Carbonate as CaC03 21 mg/L 2 20 01116/08 0:00 Icp <br /> Hydroxide as CaC03 U m9/L 2 20 01/16108 0:00 Icp <br /> Total Alkalinity 369 mg/L 2 20 01/16/08 0:00 Icp <br /> Ammonia as N, un- M350.1 - Calculation < U mg/L 0.01 0.05 01/28/08 0:00 talc <br /> ionized <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 3.4 % 01/28108 0:00 Cale <br /> Sum of Anions 9.8 meq/L 0.1 0.5 01/28/08 0:00 Cale <br /> Sum of Cations 10.5 meq/L 0.1 0.5 01/28108 0:00 Cale <br /> Chloride 325.21 SM45000I-E 59 mg/L 1 5 01/21/0814:05 am[ <br /> Conductivity @25C 120.1 / SM2510B 897 umhos/cm 1 10 01/1610823:23 Icp <br /> Hardness as CaCO3 SM2340B - Calculation 236 mg/L 1 7 01/28108 0:00 Cale <br /> Lab Filtration SM 3030 B ' 01115/0815:10 cas <br /> Lab Filtration & SM 3030 B ' 01/16108 9:50 wpl <br /> Aadification <br /> N'"en, ammonia M350.1 - Automated Phenate U m91L 0.05 0.5 01/22/08 20:25 pib <br /> pH (lab) 150.1 / SM4500H+ B <br /> pH 8.5 H units 0.1 0.1 01/16108 0:00 Icp <br /> pH measured at 22.0 C 0.1 0.1 01/16/08 0.00 Icp <br /> Residue, Filterable 160.1 / SM2540C 510 mg/L 10 20 01/15/0815:10 cas <br /> (TDS) @180C <br /> Sodium Absorption USGS -11738-78 3.72 0.03 0.15 01/28/080:00 Cale <br /> Ratio in Water <br /> Sulfate 375.4 - Turbidiimetric 39 ' mg/L 5 30 01/2410814:27 and <br /> TDS (calculated) Calculation 540 m91L 10 50 01/28/080:00 talc <br /> TDS (ratio - Calculation 0.94 01/28/08 0:00 Cale <br /> measured/calculated) <br /> <br />REPIN.02.06.05.01 <br />• Please refer to Qualifier Reports for details. <br />L67204: Page 3 of 20