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i y <br />Richard 0. Lamm <br />Governor <br /> <br />DEPARTMENT OF NATURAL RESOURCES <br />David H. Getches, Executive Director <br />MINED LAND RECLAMATION DI\ <br />DAVID C. SHELTOtJ, Director <br />October 18, 1985 <br />Terrell Johnson <br />Colorado Yampa Coal Company <br />29588 County Road 27 <br />Oak Creek, Colorado 80467 <br />Re: Interpretation of Hydrologic Monitoring at Eckman Park - File No. 79-117 <br />Dear Mr. Johnson: <br />Attached is the Division's interpretation and results of the water sampling <br />that was conducted at the Eckman Park Mine on July 30, 31 and August 1, 2, <br />1985. At the end of this letter there are general comments and concerns on <br />your monitoring plan and probable hydrologic consequences which you need to <br />consider and respond to. <br />NPDES Sampling <br />Three point source discharge samples were taken at pond H, D, and F. These <br />samples were forwarded to the Department of Health for analysis of total <br />suspended solids. The results for the pond H, D, and F samples were 35, 12, <br />and 10 mg/1 TSS. These results appear to be within acceptable TSS limits. <br />Spoils Aquifer Quality <br />Groundwater samples were collected from bailed spoils wells at site 026-SP2 <br />and 026-SP1. Both wells showed similar quality characteristics. Dissolved <br />solids concentrations were moderately high at 2450 and 2750 mg/l, EC for site <br />SP2 was 2770 umhos and sulfates were 1400 and 1670 mg/1. CYCC (Colorado <br />Yampa Coal Company] has not submitted any data to MLRD (Mined Land <br />Reclamation) from these wells for comparison purposes. However, the TDS <br />concentrations appear to be at or below spoils water concentrations found at <br />other mines in 20 Mile Park. The concentrations also appear to be in the <br />range predicted by the leach tests done by CYCC. <br />Spring Discharges <br />Numerous springs were noted at the base of the back filled spoils at Eckman <br />Park and one other spring (identified in 1984) is located east of the Foidel <br />Creek Mine facilities. The quality of the springs discharge is fair to poor <br />with the results of selected parameters shown below. <br />423 Centennial Building, 7313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />rl <br />~II II~~I~~I~~I~~ II~ <br />