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1 <br /> <br /> <br />LJ <br />' The Eagle No. 5 and No. 6 Mines are underground coal mines located <br />approximately seven miles south of Craig, Colorado (Figure 1). The <br />areal extent of the underground workings in the No. 5 Mine was <br /> approximately 1,997 acres at the end of 1988. Approximately 34 <br />' acres had been mined in the No. 6 Mine as of December 31, 1988. <br /> The coal being mined is from the Cretaceous Age Williams Fork <br /> Formation, "F" Seam in the No. 5 Mine and the "E" Seam in the No. <br />' 6 Mine. <br /> Hydrologic monitoring has been conducted at the mine site since <br />' 1980. This report presents the results of the 1988 monitoring. <br />The complete 1983, 1984, 1985, 1986 and 1987 monitoring is <br />presented in the respective Annual Reports. <br />' The hydrologic monitoring is divided into two parts: 1) ground <br />water and 2) surface water. The monitoring locations are shown on <br />Figure 2 and summarized on Table 1. The water quality monitoring <br />' includes field parameters (Table 2), water quality parameters <br />(Table 3) and NPDES parameters (Table 4). The water quality <br />samples are analyzed by ACZ Laboratories, Inc., Steamboat Springs, <br />Colorado, a USEPA certified laboratory. This report includes data <br />collected specifically to meet requirements of the Colorado Mined <br />Land Reclamation Division (CMLRD) as well as data collected to meet <br />the requirements of the Colorado Wastewater Discharge Permit System <br />' (NPDES permits). A complete listing of all the water quality data <br />is submitted separately. <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br />