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:. <br /> <br />~~ <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />0.E CLAMATION <br />MINING•SAFEiY <br />RAG Empire Corporation sill Owens <br />Mr. Riehazd Mills eovemor <br /> Creg E. Walther <br />P.O. Box 68 Eaetmrve D~rec:or <br />Craig, CO 81625 Michael g. Long <br /> Division Director <br />Re: 1998 and 1999 Annual Hydrology Reports, and 1999 Annual Reclamation Report <br />Eagle 5 and 9 Mines, Permit C-81-044 <br />Dear Mr. Mills: <br />The Division has completed its review of the above-referenced reports. The results of the <br />review aze shown on the attached review checklist. The 1999 Annual Hydrology Report was <br />well-prepazed and thorough. The Division has the following comments regazding the reports. <br />1. Submittal of 1998 Annual Hydrology Report. The Division does not have copies <br />of the 1998 annual hydrology report. Please submit two copies. <br />2. Submittal of 1999 Pond Inspection Reports. The Division does not have copies of the <br />1999 pond inspection reports. Please submit copies. <br />3. 1999 Annual Hydrology Report, underground mine discharge volume (Figure 17) and <br />discharge rate (Appendix 1). The reported dischazge volumes seem small for the reported <br />dischazge rates. For example, the 7 North Angle's 325-gpm rate reported for 12199 would <br />take only 42 minutes to produce the 13,604 gallons repotted for that month. Are these <br />figures accurate? <br />4. 1999 Annual Hydrology Report, Table 8, spurious pH value. The field pH maximum is <br />reported as 910, an obvious unreliable figure. Please correct it if it is a typographical error. If <br />910 was the actual measurement (indicating a measurement error), then please exclude <br />unreliable data of this type from the summary sheets in the annual reports. <br />Please do not hesitate to call me if you have any questions. <br />Sincerely, <br />Tom Kaldenbach <br />Environmental Protection Specialist <br />cc: Dan Hernandez. CDMG <br />III liiillliilllllll <br />~~rA?~ OF COLC~1~1~U <br />DIVISION OF MINERALS AND GEOLOGY <br />DeOanmene of Namra! Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone. 13051 866-3567 <br />FA%:1307183?-8106 <br />January 31, 2001 <br />