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MINREC, INC., BLUE RIBBON MINE <br />2004 ANNUAL HYDROLOGIC REPORT <br />JANUARY 1, 2004 THROUGH DECEMBER 31, 2004 <br />INTRODUCTION <br />The Blue Ribbon Mine went into permanent cessation in 1986 and the majority of reclamation was <br />completed that year. A minor amount of grading was done in 1987 on the portal bench to improve <br />drainage. During 1988, 1989 and 1993 portions of the bench cover material slumped and were <br />repaired and seeded. <br />The hydrologic monitoring plan is contained in the permit document, pages 124 and 124a which <br />were revised July 28, 1994 and October 10, 1995 respectively. Exhibits H-1 and Z show the various <br />monitoring locations. <br />SURFACE WATER <br />The following table shows the flow, pH and conductivity for upstream and downstream Hubbard <br />Creek by quarter for 2004 compared to the same month averages from 1982 through 2004. <br /> Upper Hubbard Creek Lower Hubbard Creek <br />Quarter Parameter AVE 2004 AVE 2004 <br />1st Flow, cfs 23.8 57.0 - - <br /> pH 8.1 8.8 8.1 8.6 <br /> Cond-umhos/cm 205 263 217 267 <br />2nd Flow, cfs 30.3 77 - - <br /> pH 8.2 8.4 8.1 8.3 <br /> Cond-umhos/cm 217 127 226 153 <br />3rd Flow, cfs 6.5 22 - - <br /> pH 8.2 8.9 8.2 8.9 <br /> <br />4th Cond-umhos/cm <br />Flow, cfs 249 <br />6.6 134 <br />8.0 266 <br />- 133 <br />- <br /> pH 8.1 8.9 8.1 9.0 <br /> Cond-umhos/cm 218 135 241 246 <br />I • <br />