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A~aZ Laboratories, Inc. <br />• 2773 Downhill Ddve Steamboat Springs, CO 80487(800) 334-5493 <br />Lorencito Coal Company ACZ Sample ID: L4935ti02 <br />Project ID: Date Sampled: 12/31/04 13:05 <br />Sample ID: LG2 Date Received: 01/05/05 <br /> Sample Matrix: Surface Water <br />Wet Chemistry <br /> <br />Alkalinity as CaC03 SM23208 -Titration <br />Bicarbonate as 228 mglL 2 10 01/05/05 0:00 jah <br />CaC03 <br />Carbonate as CaC03 28 mg/L 2 10 01/05/05 0:00 jah <br />Hydroxide as CaC03 U mglL 2 10 07105/OS 0:00 jah <br />Total Alkalinity 256 mglL 2 10 07!05105 0:00 jah <br />Amnwnia as N, un- M350.1 - Calcula8on U mglL 0.01 0.05 01/25/05 0:00 talc <br />ionaed <br />Cation-Anion Balanp Calwlation <br />Cation-Anion Balance -2.1 % 01125/05 0:00 talc <br />Sum of Minns 7.4 meglL 0.1 0.5 01/25/05 0:00 talc <br />Sum of Catlons 7.1 meglL 0.1 0.5 0125!05 0:00 talc <br />Chbride M325.2-Colorimebic 37 mglL 1 5 01/15/0517:06 pjb <br />Conductivity Q25C M120.1 -Meter 642 umhos/cm 7 10 01/05/05 21:44 jah <br />Hardness as CaC03 SM2340B-Calculation 215 mglL 1 7 01/251050:00 talc <br />Lab Filtration SM 3030 B ~ 01/10105 11:31 ak <br />Lab Filtration 8 SM 3030 B 01106105 20:02 ak <br />Addifiption <br />• <br />Nitrogen, ammonia M350.1 -Automated Phenate 0.07 B mglL 0.05 0.5 01113/05 13:03 ccp <br />pH (lab) M750.1 - Electrometric 8.6 H units 0.1 0.1 01/05/05 21:44 jah <br />Residue, Fitterabie M760.1 - Grevimetric 380 mglL 10 20 01/06/05 18:59 ktd <br />(TDS) (aJ160C <br />Residue, NOR- M760.2-Gravimetric 6 BH mglL 5 20 01/13/059:39 djb <br />Filterable (TSS) <br />Q105C <br />Sodium Absorption USGS - 11738-78 1.79 0.03 0.15 01/25105 0:00 talc <br />RaSo in Water <br />Sulfate M375.3 - Gravimetdc 60 mglL 10 50 01!13/05 11:54 has <br />TDS (calculated) CaIwlaOon 404 mglL 10 50 01!25/050:00 talc <br />TDS (ratio- Calwla8on 0.94 0125/050:00 plc <br />measured/calculated) <br />• <br />REPIN.01.11.00.01 <br />' Please refer fo Extended Qualifier Report /or detail. <br />ACiZ Laboratories, Inc. <br />• 2773 Downhill Drive Steamboat Springs, CO 80487(800) 334-5493 <br />Lorencko Coal Company <br />Project ID: <br />Sample ID: LG2 <br />1119358: Page 4 of ]0 <br />ACZ Sample ID: L49358.02 <br />Date Sampled: 12/31/04 13:05 <br />Date Received: 01/05/05 <br />Sample Matrix: Surface Water <br />Field Data <br />viua,y ~ z', a. t*°- ,-t. , e - '-,~,-ten <br />Conductivity (Field) Field Measurement 677 umhos/cm 12/31/04 13:05 rt <br />pH (Field) Field Measurement 8.4 uniLS 12131/04 13:05 rt <br />Temperature (Field) Field Measurement 5.8 C 12/31/04 13:05 rt <br />