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<br /> <br />1485 HYDROLOGIC MONTORING REPORT <br />PERMIT C-84-062, ENERGY MINE N0. 3 <br />OPERATOR: COLORADO YAMPA COAL COMPANY <br />INTRODUCTION <br />' Colorado Yampa Coal Company's Mine No. 3 is a surface mining operation <br />located approximately 15 miles southwest of Steamboat Springs, Colorado. A <br />comprehensive hydrologic monitoring program has been conducted at the mine <br />' site from 1979 to the present. The monitor sites, frequency and list of <br />parameters to be monitored are based on requirements of State Mining Permit <br />' 79-177, C-84-062 and NPDES Permit CO-0027154, CO-0036021. Water quality <br />samples are analyzed according to schedules derived from "Guidelines for <br />' the Collection of Baseline Water Quality and Overburden Chemistry Data" <br />(CMLRD, September 16, 1982) and NPDES Permit CO-0027154 (CWQCD, October 7, <br />1983). <br />MONITORING PROGRAM DESCRIPTION <br />' The plan for monitoring consists of field and laboratory measurement <br />of water at Surface Discharge Points (SDP), Selected Surface Stations <br />' (SSS), Sample Sites (SS), Bedrock Wells (BW), Alluvial Wells (AW) and Spoil <br />Wells (SW). The sites are shown on the map entitled CYCC Hydrologic Moni- <br />' toring Program. The schedule for monitoring is shown on the attached ta- <br />bles, and is described below. <br />' Ground water monitoring consists of water level measurement of bedrock <br />monitor wells and spoil monitor wells quarterly and alluvial wells monthly. <br />' Sampling for full-suite analysis is performed for bedrock, alluvial and <br />spoil wells twice per year in April and October; alluvial wells are also <br />' sampled for major ions in January and July. Wells sampled are shown in the <br />attached table, 1985 Ground Water Monitoring. At the time of ground water <br />' sampling, temperature, pH and electrical conductivity are measured using <br />EPA-approved equipment. The parameters analyzed for bedrock wells (BW), <br />' spoil wells (SW) and alluvial wells (AW) are shown in the attached table, <br />1985 Ground Water Quality Analyses. <br /> <br />