Laserfiche WebLink
• The Eagle ~5 and ~6 Mines are underground coal mines, located <br />approximately seven miles south of Craig, Colorado (Figure 1). <br />The aerial extent of the underground workings in the #5 Mine <br />was approximately 2,040 acres at the end of 1990 and since <br />active mining in the #5 Mine ceased in 1990 this acreage has <br />not changed. The mains connecting the 5 and 5A portals in the <br />~5 Mine are still used for access to the f6 Mine. The coal <br />extraction is from the Cretaceous Age Williams Fork Formation, <br />in the "E1" Seam in the ~6 Mine. Hydrologic monitoring has <br />been conducted at the mine site since 1980. This report <br />presents the results of year 1993 monitoring. The complete <br />1983 through 1992 monitoring is presented in the respective <br />Annual Reports for each calendar year. The hydrologic <br />• monitoring is divided into two parts: 1) groundwater, and 2) <br />surface water. The monitoring locations are shown in Figure 2 <br />and summarized in 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 <br />Springs, Colorado, a USEPA certified laboratory. This report <br />includes data collected specifically to meet requirements of <br />the Colorado Division of Minerals & Geology (DMG), as well as <br />data collected to meet the requirements of the Colorado <br />Wastewater Discharge Permit System (NPDES permits). A <br />complete listing of all the water quality data is submitted <br />• separately. <br />