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• , iii iiiiiiiiiiiiiiii <br />STATE OF LOLvivwv <br />Roy Romer, Governor <br />r~ `~~` <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />November 30, 1989 <br />Mr. Rick Mills <br />Colorado Yampa Coal Company <br />29587 Routt County Road No. 27 ~ ~~ -~`~~~ <br />Oak Creek, Colorado 80467 <br />RE: Annual Hydrology Report - 1988 Water Year - Eckman Park, Mine 1, Mine 2, <br />- C-81-071 <br />Dear Mr. Mills: <br />We have reviewed the above-referenced Annual Hydrology Report and our comments <br />are listed below. This review emphasizes an analysis of sampling frequency <br />for the 1988 water year. The water quality impact analysis provided by CYCC <br />appears to appropriately represent the trends exhibited by the water quality <br />data. Implications regarding increases in salt loading and offsite impacts <br />will be more closely examined upon receipt of the 1989 water year report. <br />The following section outlines monitoring deficiencies identified for 1988: <br />Bedrock We11s <br />1. All monitoring requirements were met. <br />Alluvial Wells <br />1. CYCC did not collect a full suite water quality sample for the <br />third quarter period at alluvial wells 006-AW-2 and 006-AZ-3. We <br />understand that the sites were frozen during April; however, this <br />did not preclude sampling during May or June. Please explain this <br />omission. <br />Spoil We11 s <br />Only one of the two required full suite samples was collected at <br />spoil well 026-SP-3. Please explain this omission. <br />Springs <br />1. Flow and field parameters were not recorded for Spring A2 during <br />April. Although it is appreciated that two measurements were made, <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 <br />