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I• <br />Wet Chemistry <br />Alkalinity as CaCO3 SM23208 -Titration <br />Bicarbonate as 137 mg/L 2 10 11/01/030:00 jjc <br />CaCO3 <br />Carbonate as CaCO3 ~ U mg/L 2 10 11/01/03 0:00 jjc <br />Hytlroxide es CaCO3 U mg/L 2 10 11/01/03 0:00 Uc <br />Total Alkalinity 138 mg/L 2 10 11/01/03 0:00 jjc <br />Ammonia as N, un- M350.1 -Calculation U mglL 0.01 0.05 11121/030:00 talc <br />ionized <br />Ca[ion-Anion Balance Calculation <br />Cation-Anion Balance -1.4 % 11/21/03 0:00 talc <br />Sum of Anions 3.6 meq/L 0.1 0.5 11/21/030:00 talc <br />Sum o(Calions 3.5 meq/L 0.1 0.5 1121/030:00 talc <br />Chloride M325.2-Colorimetric 2 B mg/L 1 5 11/05/0316:48 ksj <br />Conductivity @25C M120.1 -Meter 275 umhos/cm 1 10 11/06/03 10:00 Uc <br />Hardness as CaCO3 SM23408-Calculation 160 mg/L 1 7 11/21/030:00 talc <br />Lab Filbation SM 3030 B 10/28/03 15:48 Ims <br />Lab Filtration & SM 3030 B 10/28/03 12:57 scp <br />• <br />Acidiica[ion <br />Nitrogen, ammonia M350.1 -Automated Phenate U mg/L 0.05 0.3 10/29/03 14:13 ksj <br />pH (IaD) M750.1 -Eleclrometdc 8.3 H units 0.1 0.1 11/01!0312:34 jjc <br />Residue, Filterable M160.1 -Gravimetric 190 mg/L 10 20 1110110314:45 jjc <br />(TDS) @180C <br />Residue, NOe- M760.2-Gravimetric U mg/L 5 20 11/03/0317:16 mah <br />Filterable (TSS) <br />@105C <br />Sotlium Absorption USGS - 11738-78 0.28 0.03 0.15 11/21!03 0:00 talc <br />Ratio in Water <br />Suttate M375.3 -Gravimetric 40 B mg/L 10 50 11/06/039:52 bnh <br />TDS (calculatetl) Calculation 192 mg/L 10 50 11/21/030:00 talc <br />TDS (ratio- Calculation 0.99 11/21/030:00 talc <br />measured/calculated) <br />• REPIN.01.11.00.01 'please rater to Extended Ouelilier Report /or detail. <br />L4J572: Pagc 17 of 27 <br />Lorencito Coal Company ACZ Sample ID: L43532-11 <br />Project ID: Date Sampled: 10/27/03 14:20 <br />Sample ID: PRGTY-WEST Date Received: 10/28/03 <br />Sample Matrix: Surface Water <br />