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<br />MINREC, INC., BLUE RIBBON MINE <br />2007 ANNUAL HYDROLOGIC REPORT <br />LJ <br />• <br />JANUARY 1, 2007 THROUGH DECEMBER 31, 2007 <br />~~~~~~~ <br />FED ~ Z 2008 <br />INTRODUCTION Division of Rta,;;~.::;;;,~,on, <br />Mining and Safet <br />The Blue Ribbon Mine went into permanent cessation in 1986 and the majority ofy <br />reclamation was completed that year. A minor amount of grading was done in 1987 on the <br />portal bench to improve drainage. During 1988, 1989 and 1993 portions of the bench <br />cover material slumped and were repaired and seeded. <br />The hydrologic monitoring plan is contained in the permit document, pages 124 and 124a <br />which were revised July 28, 1994 and October 10, 1995 respectively. Exhibits H-1 and Z <br />show the various monitoring locations. <br />SURFACE WATER <br />The following table shows the flow, pH and conductivity for upstream and downstream <br />Hubbard Creek by quarter for 2007 compared to the same month averages from 1982 <br />through 2007. <br /> Upper Hubbard Creek Lower Hubbard Creek <br />Quarter Parameter AVE 2007 AVE 2007 <br />1St Flow, cfs 22.4 13 - - <br /> pH 8.2 8.8 8.1 8.5 <br /> Cond-umhos/cm 207 227 216 214 <br />2nd FIOw, Cfs 31.1 3.2 - - <br /> pH 8.2 8.2 8.1 8.3 <br /> Cond-umhos/cm 217 300 226 320 <br />3`d Flow, Cfs 6.0 2.1 - - <br /> pH 8.2 8.2 8.2 8.1 <br /> Cond-umhos/cm 244 170 257 150 <br />4th Flow, cfs 6.7 5.8 - - <br /> pH 8.1 8.2 8.1 7.9 <br /> Cond-umhos/cm 220 240 239 220 <br />