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<br />ACZ <br />ACZ I,aborarorirs, fnc. <br />3P000 ONWnhrU UnYr <br />Suamboal Springs, CO 80487 <br />(800) 330-5493 <br />Flatiron Companies <br />P.O. Box 229 <br />Boulder, CO 80306 <br />Kay lames <br />Lab Sample ID <br />Client Sample ID <br />Client Project ID <br />ACZ Report 1D <br />Date Sampled <br />Date Received <br />Date Reported <br />L5876-01 <br />Wel! 30-C <br />Walden Coal Co <br />RG10493 <br />5/28/95 <br />6/1/95 <br />6/30/95 <br />Sample Matrix: Crovnd Water <br />Calcium, dissolved M200.7 ICP 116.0 mg/L 0.2 I 629/95 rd <br />Iron, total rccoverablc M200.7 ICP 8.08 mg/L 0.01 0.05 686/95 fp <br />Lead, total rccovcreble M200.7 ICP 0.05 B mg/L 0.02 0.1 626/95 fP <br />Magnesium, dissolved M200.7 ICP 61.0 mg/L 0.2 1 6129/95 rd <br />Potassium, dissolved M200.71CP _ 22 mg/L 0.3 1 629/95 rd <br />Sodium, dissolved M200.7 ICP 235.0 mg/L 0.3 1 629/95 rd <br />Metals Pre <br /> r. <br />Total Recoverable Digestion M3005 ICP 6/9/95 jaw <br />Wet Chemist <br />Alkalinity az CaC03 M2320B <br />Bicarbonate as CaC03 338 mg/L 2 10 6/5/95 jw <br />Carbonate az CeC03 U mg/L 2 ! 0 6/5/95 jw <br />Hydroxide az CaC03 U mg/L 2 10 6/5/95 jw <br />Total Alkalinity 338 mg/L 2 10 6/5/95 jw <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance 3.3 % 6/30195 talc <br />Sum of Anions 19.90 mcq/L 0.01 0.05 6/30/95 talc <br />Sum of Cations 21.20 meq/L 0.01 0.05 6!30/95 talc <br />Chloride M325.2 - Colarimetric (RFA) I B mg/L 1 5 6/6/95 hm <br />Lab fil[ration "' 62/95 jk <br />Lab Filua[ion 8: Acidification •'• 62/95 jk <br />pH (lab) M9040-Electromevic 7.2 units 0.1 0.1 62/95 jw <br />Residue, Filterahle (TDS)CISOC M160.1-Gravimetric 1190 mg/L IO 20 6/6195 jw <br />Sulfate M375.3-Gravimevic 600 mg/L 10 20 6/6/95 jk <br />i <br />IU = Analy[c waz analyzed for bm not de[ec[ed <br />~B = Analvte enneen7ation detected at a value be[ween MDL and PQL <br />PQL =Practical Quantization Limit <br />I <br />REPIN00703.95.07 Page 1 of t <br /> <br />,~~ / /r~t,~.u, <br />Vice President of Operations: Ralph Poulscn <br />R _ 2_ <br />