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A~Z Laboratories, Inc. a • 2773 Downhill Dave Steamboat Springs, CO 80487(800) 334-5493 '~ Lorencko Coal Company ACZ Sample ID: C49298-01 Project ID: Date Sampled: 12/2&/04 13:20 Sample ID: PC-1 Date Received: 12/29/04 Sample Matrix: Surface Water Wet Chemistry - '~'Fn a > ~e -a - r. - AlkalinityasCaC03 SM23206-Titration Bicarbonate as 860 mgll 2 10 01104/05 0:00 jah CaCO3 Carbonate as CaCO3 93 mg/L 2 10 01/04/05 0:00 jah Hydroxide as CaCO3 U mg/L 2 10 01104105 0:00 jah Total Alkalinity 953 mglL 2 10 01/04/05 0:00 jah Ammonia as N, un- M350.1 -Calculation U mglL 0.01 0.05 01/26/05 0:00 talc ion¢etl Cation-Anion Balance Calculation Cation-Anion Balance -5.0 % 01128105 0:00 talc Sum of Anions 21.0 meglL 0.1 0.5 01/26/05 0:00 talc Sum of Cations 19.0 meq/L 0.7 0.5 01/26/05 0:00 talc Chloride M325.2 - Colorimetric 48 mgrL t 5 01/07/05 17:24 cep ConducCrviry (~25C M120.1 -Meter 1690 umhos/cm 1 10 01104!05 16:17 jah Hardness as CaCO3 SM23408 -Calculation 80 mg/L 1 7 01/26/050:00 cafe Lab FilDation SM 3030 B 1229/04 17:49 jah Lab Filtration & SM 3030 B 12/29104 19:20 ak • AcidiOcaficn Nitrogen, ammonia M350.1 -Automated Phenate U mglL 0.05 0.5 Ot/06/05 13:24 cep pH (lab) M150.1 - Electrometric 8.6 H units 0.1 0.7 01104/05 16:17 jah Residue, Filterable M160.7 - Gravimehic 1170 mglL 10 20 01/04105 9:43 ktd (TDS) @780C Residue, Non- M1602-Gravimetric 14 B mglL 5 20 1229/0416:34 ktd Filtemble (TSS) ~705C Sodium Absorption USGS -1173&78 19.50 0.03 0.75 0126/05 0:00 talc Ratio in Water Suttate M375.3-Gravimetric 30 B mglL 10 50 01/1110510:23 Ims TDS (calculated) Calcuation 1110 mglL 10 50 0126105 0:00 talc TDS (ratio - Calwlation 1,05 01126!05 0:00 talc measuredlcalculated) • REPIN.01.11.00.01 ' Please refer to Extended Qualifier Report for detail. IA9298: Page 3 of 15