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• <br />INTRODUCTION <br />The Colorado Yampa Coal Company Kline I, Aline 2 and Eckman Park Mine are located <br />approximately 25 miles southwest of Steamboat Springs, Colorado in Twentymile Park (Figure <br />1). They are all inactive surface coal mining operations. <br />Mine 1 and the Eckman Park Mine (collectively called Mine 1 in this report) are located near <br />the top of the Foidel Creek drainage in the south end of Twentymile Park. Avery small portion <br />of the disturbed area extends into the Aliddle Creek drainage. The Wadge Coal seam was <br />extracted during active mining operations. Active mining has ceased with a total of <br />approximately 2200 acres having been mined in Eckman Park. Reclamation activities continue <br />in this area. A total area of approximately 3175 acres leas been disturbed at Mine 1. This <br />includes a coal ]oadout, maintenance and administrative facilities, most of which have been <br />transferred to Twentymile Coal Company. Also, A4ine 1 is adjacent to Twentymile Coal <br />Company's Foidel Creek underground mine. The operations share some of the discharge control <br />facilities. A spur of the Denver and Rio Grande Western Railroad runs to the site. <br />• Mine 2 is located on the south side of the Fish Creek drainage in the middle of Twentymile <br />Park. The Fislt Creek coal seam, which overlies the Wadge Coal seam was extracted at Mine <br />2. No active mining is taking place at Mine No. 2 and the area has been completely backfilled, <br />regraded, and revegetated. A total area of approximately 885 acres was disturbed at Mine 2. <br />Hydrologic monitoring leas been conducted in the area since 1975. Surface coal mining and <br />reclamation activities iit the A-line 1 area were conducted from 1960's to 1991. Surface coal <br />mining in the Mine 2 area was conducted from 1975 to 1981. This report covers the hydrologic <br />monitoring for the 1992 water year. The previous monitoring of this area was presented in <br />previous Annual Hydrologic Reports. The Hydrologic monitoring has been divided into four <br />parts: I) ground water, 2) surface water, 3) spoil springs, and 4) efFluent sites. The <br />monitoring locations are shown on Figures 2 and 3 and stnnmarized on Table 1. The parameter <br />lists are shown on Tables 2 and 3. A complete listing of all water data collected at the <br />monitoring sites is submitted separately. Summaries of the complete data set and the 1992 data <br />are presented on Tables 4 to 64 and Figures 4 to 53. Unless otherwise indicated reference to <br />a year means a water year. <br />