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~CZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Sorinas. CO 80487!800) 334-5493 <br />Field Data <br /> <br />Conductivity (Field) Field Measurement 900 umhoslcm 07/14/04 12:23 jm <br />pH (Field) Field Measurement 7.6 units 07/14/04 12:23 jm <br />Temperature (Field) Field Measurement 12.0 C 07/14!04 12:23 jm <br />Metals Analysis <br /> <br />• R R ~~! 'i 9. ism <br />Calcium, dissolved M200.7 ICP 8.2 mg/L 0.2 1 07/28/04 9:52 scc <br />Iron, dissolved M20D.7 ICP 028 mg/L 0.01 0.05 07!23104 16:04 scp <br />Magnesium, dissolved M200.71CP 1.0 mg/L 0.2 1 07128/049:52 scc <br />Manganese, dissolved M200.7 ICP 0.029 B mg/L 0.005 0.03 07/23/04 16:04 scp <br />Potassium, dissolved M200.7 ICP 1.6 mglL 0.3 1 07/23/04 16:04 scp <br />Sodium, dissolved M200.7 ICP 484 mg/L 0.6 2 07/28/04 14:03 scp <br />Wel Chemistry <br /> <br />Alkalinity as CaC03 SM23208 -Titration <br />Bicarbonate as 1070 mg/L 2 10 07/28/04 0:00 mah <br />CaC03 <br />Carbonate as CaC03 U mg/L 2 10 07/28/04 D:OD mah <br />Hydroxide as CaC03 U mg/L 2 10 07r28/04 0:00 mah <br />Total Alkalinity 1070 myL 2 10 D7/28104 0:00 mah <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance •3.5 % 07!30104 0:00 talc <br />Sum of Anions 23.4 meyL 0.1 0.5 07/30/04 0:00 talc <br />Sum of Cations 27.8 meq/L 0.1 0.5 07r30/04 0:00 talc <br />Chloride M325.2 - Colodmetdc 56 mg/L 1 S 07/21/04 11:00 ksj <br />Hardness as CaC03 SM23406 -Calculation 25 mg/L 1 7 07/30/04 0:00 talc <br />Lab Filtmtion SM 3030 B 07/15/04 15:52 erf <br />Lab Filtration & SM 3030 B 07/20/04 8:15 las <br />Acidification <br />Nitrate as N, dissolved Calculation: N03N02 minus N02 0.04 B mg/L 0.02 0.1 07/30/04 0:00 talc <br />Nitrate/Nitd[e as N, M353.2 -Automated Cadmium 0.04 B mg/L 0.02 0.7 07/15/04 17:30 erf <br />dissolved Reduction <br />Nftdte as N, dissolved M353.2 -Automated Cadmium U mg/L 0.01 0.05 07!15!04 17:30 erf <br /> Reduction <br />Residue, Filterable M160.7 -Gravimetric 1270 mgt 10 20 07/21/0410: D2 bf <br />(TDS) @180C <br />Sodium Absorption USGS - 11738-78 42.90 0.03 0,15 07/30/04 0:00 talc <br />Ratio in Water <br />Sulfate M375.3 - Gravimetric 20 B mg/L 10 50 07/23/04 9:13 djb <br />TDS (calculated) Calculation 1210 mg/L 10 50 07/30/04 0:00 talc <br />TDS (ratio- Calculation 1.05 07/30/040:00 talc <br />measured/calculated) <br />REPIN.01,11.00.01 'Please refer to Extended Qualifier Report /or detail. <br /> L46721: Page 2 of 1l <br />Kerr Coal Company ACZ Sample ID: L46721-01 <br />Project ID: Date Sampled: 07/14/04 12:23 <br />Sample ID: SP-01 Date Received: 07/15104 <br />Sample Matrix: Ground Water <br />