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• <br />III IIIIIIIIIIIII III <br />999_ <br />Doc Date:12/1112001 <br />MINREC, INC., BLUE RIIiBON MINE <br />1998 ANNUAL HYDROLOGIC REPORT <br />JANUARY 1, 1998 THROUGH DECEMBER 31, 1998 <br />• <br /> <br />INTRODUCTION <br />RECEIVED <br />MAR 11 1999 <br />Division of Minerals & Geology <br />The Blue Ribbon Mme went into permanent cessation in 1986 and the majority of reclamation was <br />completed that yeaz. A minor amount of grading was done in 1987 on the portal bench to improve <br />drainage. During ]988, 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 were <br />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 1998 compazed to the same month averages from 1982 through 1998. <br /> Upper Hubbard Creek Lower Hubbard Creek <br />Quarter Parameter AVE 1998 AVE 1998 <br />1st Flow, cfs 25.8 14.6 - - <br /> pH 8.1 7.8 8.0 7.8 <br /> Cond-umhos/cm 199 150 219 150 <br />2nd Flow, cfs 35.0 16.7 - - <br /> pH 8.1 7.6 8.0 7.1 <br /> Cond-umhos/cm 222 400 232 400 <br />3rd Flow, cfs 6.3 5.5 - - <br /> pH 8.2 7.8 8.1 7.3 <br /> Cond-umhos/cm 258 170 269 170 <br />4th Flow, cfs 7.2 8.9 - - <br /> pH 8.1 7.9 8.1 8.0 <br /> Cond-umhos/cm 218 170 243 140 <br />