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<br />Mr. Marcus Middleton -2- August 27, 1993 <br />Colorado Yampa Coal Co. <br />5. Units for settleable solids should be represented as ml/I rather than mg/I. Please <br />correct. <br />6. The bottom of well 026-SP-1 calculates to 7004 feet, yet is shown at 7026 on <br />Figure 16. Which is correct? This same phenomenon exist for well 026-SP-3. <br />7. Why are Foidel Creek mine ponds included in Table 1? <br />8. The text indicates spoil spring data was collected in May of 1991. Is this <br />correct? <br />9. The text indicates the total recoverable manganese standard at Station 8 is <br />1000 mgll. The Division believes this to be incorrect. <br />Monitoring Frequency <br />Bedrock Wells <br />1. All requirements were met. <br />Alluvial Wells <br />1. All requirements were met. <br />Spoil Wells <br />1. All requirements were met. <br />Surface Water <br />1 . No May cations, anions, and trace metal sample was represented for sites 301 <br />and 69. <br />2. Doubling of values was evident in the data tables for sites 800, 900, 16, 10, and <br />1002. <br />3. Sites 8, 307, 1002, and 69 datum elevations do not agree with the table. <br />4. Please forward a copy of rating curves used for sites 1003, 69, 16, and 301. <br />Discharge and Pond Sites <br />1 . Please submit the meter readings for site 1 15 and site 109 for the Foidel Creek <br />Mine for the 1992 water year. Include this information as a standard portion of <br />your AHR starting in 1993. <br />