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INTRODUCTION <br />The Eagle #5 and #6 Mines are underground coal mines, located approximately <br />seven miles south of Craig, Colorado (Figure 1). The aerial extent of the underground <br />workings in the #5 Mine 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 not changed. The <br />mains connecting the 5 and 5A portals in the #5 Mine are still used for access to the <br />#6 Mine. The coal extraction is from the Cretaceous Age Williams Fork Formation, in <br />the "E1"Seam in the #6 Mine. Hydrologic monitoring has been conducted at the mine <br />site since 1980. This report presents the results of year 1995 monitoring. The <br />complete 1983 through 1994 monitoring is presented in the respective Annual Reports <br />for each calendar year. The hydrologic monitoring is divided into two parts: 1) <br />• groundwater, and 2) surface water. The monitoring locations are shown in Figure 2 <br />and summarized in Table 1. The water quality monitoring includes field parameters <br />(Table 2), water quality parameters (Table 3), and NPDES parameters (Table 4). The <br />water quality samples are analyzed by ACZ Laboratories, Inc., Steamboat Springs, <br />Colorado, a USEPA certified laboratory. This report includes data collected <br />specifically to meet requirements of the Colorado Division of Minerals & Geology <br />(DMG), as well as data collected to meet the requirements of the Colorado <br />Wastewater Discharge Permit System (NPDES permits). <br />n <br />lJ <br />C~91~044 1995 AHR Page 1 <br />