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ACZ <br />ACZ laboratories, /nc. <br />34f00 Downhill Drive <br />Sreamhom Springs, CO 86J87 <br />• (800) 334-5493 <br />Kerr Coal Co. <br />P.O. Bor 487 <br />Walden, CO 80480 <br />Jim Mossman <br />Lab Sample ID: L/j1~7-07 <br />Client Sample ID: 327 <br />Client Project ID: <br />ACZ Report ID: RG4/737 <br />Date Sampled: 3/2//97 /3:05 <br />Date Received: 3/25/97 <br />Date Reported: 4/8/97 <br />Sample Matrix: Surface Water <br />Conductivity (Field) Fidd Meazuremcnt 200 umhos/cm 3/21/97 jm <br />pH (Fidd) Field Measurement 7.6 units 3/21;97 jm <br />Tempemturc (Field) Field Meazurcmen[ 7.0 C J/21i97 jm <br />Metals Anal sis <br />Calcium, dissolved M200.71CP 19.1 mg/L 0.2 I 4/4/97 u <br />Iron. total recoverable M200.71CP 0.83 mg/L 0.01 0.05 3/31/97 jaw <br />Magnesium, dissolved M200.71CP i.7 mg/L 0.2 I 4/4!'97 ss <br />Mangancse. total recovcreble M200.7 ICP 0.060 mg/L 0.005 0.03 3/31/97 jaw <br />Potazsium. dissolved M200.71CP i.l mg/L 03 I 4/4/97 ss <br />Sodium. dissolved M200.71CP 22.4 mg/L 0.3 I 4/4/97 ss <br />Metals Pre <br />• Total Recoverablc Digestion M}005 ICP 3/27/97 laa <br /> Wet Chemist <br />r <br /> Alkalinity az CaC03 M310.1 <br /> Bicarbonate az CaC03 75 mg/L 2 10 327/97 jb <br /> Carbonate az CaC03 U mg/L 2 10 3/27/97 jb <br /> Hydroxide az CaC03 U mg/L 2 10 3!27/97 jb <br /> Total Alkalinity 75 mg/L 2 IO 327/97 jb <br /> Cation-Anion Balance Calculation <br /> Cation-Anion Balance 2.7 % 4/8/97 talc <br /> Sum of Anions 2.41 meq/L 0.01 0.05 4/8/97 talc <br /> Sum of Cations 2.54 meq/L 0.01 0.05 4/8!97 talc <br /> Chloride M325.2 - Colorimetric (RFA) 2 B mg/L I 5 328197 hm <br /> Lab Filtration ••• 3/25/97 laa <br /> Lab Filtration & Acidification ••• J/25/97 laa <br /> Nitrate az N, dissolved M353.2 -Automated Cadmium Reduction 0.12 mg/L 0.02 0.1 325/97 jb <br /> NitrateMiVite az N. dissolved M353.2 -Automated Cadmium Reduction O.I4 mg/L 0 02 0.1 725/97 jb <br /> Nitrite as N, dissolved M353.2 -Automated Cadmium Reduction 0.02 B mg/L 0.01 O.Oi 325/97 jb <br /> Rcsiduc. Filterable ITDS) ~a1,180C MI60.1 - Gmvimetric 180 mg/L 10 20 7/26197 bgb <br /> Residue. Non-Filterable (TSS) err 10J-iC M160.2 - GravimeVic 12 B mg/L 5 20 326!97 bgb <br /> Sodium Absorption Ratio in Water USGS - 11738.78 1.17 0 03 0.15 4/8/97 talc <br /> Sulfate M37i.3-Gravimevic 40 mg/L 10 20 3/31/97 bgb <br /> TDS (calculated) Calculation 179 mg/L 10 i0 4/8/97 talc <br /> TDS (ratio - mcazured/calculated) Calculation 1.29 4/8/97 talc <br />1 _ <br />eganie QmBGen IC <br />U = Analyze ss'az analyzed 1'or but not detccted aI the indicated MDL <br />B = Analyze concentration dctected at a valuc between MDL and PQL <br />PQL = Practical Quantization Limit <br />Vice President of Operations: Ralph PoWsen <br />REPIN 101.03 95 01 Page 1 of 1 <br />