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Bob Holder <br />Gary Soldano <br />Colorado Mined Land Reclamation Div. <br />March 10, 1988 <br />Page 2 <br />Under normal operating procedures at the Golden Eagle Mine, the Nalco <br />8852 Coagulant is not discharged into the Purgatoire River. It is absorbed <br />or precipitated out in the settling ponds. However, we speculate that some <br />condition at the mine, the specific nature of which we have not yet <br />determined, may have resulted in the discharge of coagulant into the <br />Purgatoire River in concentrations sufFicient to be hazardous to brown <br />trout. We have suspended use of the coagulant pending further <br />investigation. <br />We have obtained water samples from the Purgatoire River, both before <br />and after the initiation of the fish kill. We have been informed by Nalco <br />that it is probable that only their laboratories are equipped to detect the <br />presence of the product in water. We will split our samples, sending half <br />to Nalco for analysis and the other half to a local laboratory For <br />corroboration. This analysis should enable us to determine whether the <br />coagulant was present in the Purgatoire River and, if so, whether it was <br />present in sufficient concentrations or conditions to have caused [he death <br />of the brown trout. We will be in touch with you as soon as our analytical <br />results are available. We understand the urgency of this matter and are <br />proceeding with all due haste. <br />If you have questions, or wish to discuss this information with a <br />representative of Wyoming Fuel, please direct your inquiries to David M. <br />Stout, our Environmental Coordinator. <br />Very my yours, <br />~ v`/ <br />K. M. Kolin <br />Manager of Engineering <br />KMR/pf <br />LAW3-9 <br />