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BLUE RIBBON COAL COMPANY <br /> 1989 HYDROLOGIC REPORT <br /> JANUARY 1 , 1989 THROUGH DECEMBER 31 , 1989 <br /> INTRODUCTION <br /> Blue Ribbon Coal Company went into permanent cessation in 1986 <br /> and the majority of reclamation was completed that year. A minor <br /> amount of grading was done in 1987 on the portal bench to improve <br /> drainage . During both 1988 and 1989 portions of the bench cover <br /> material slumped and were repaired and seeded. <br /> Blue Ribbon' s hydrologic monitoring plan is contained in the per- <br /> mit document , pages 124 and 124a both of which were revised May <br /> 19 , 1987 . Exhibit Z shows the monitoring locations . <br /> SURFACE WATER <br /> The following table shows the flow, PH and conductivity for <br /> upstream and downstream Hubbard Creek by quarter for 1989 com- <br /> pared to the same month averages from 1982 through 1988 . <br /> Upper Hubbard Creek Lower Hubbard Creek <br /> Quarter Parameter Ave 1989 Ave 1989 <br /> 1st Flow 28 . 0 12 . 0 - - <br /> pH 8 . 1 8 . 0 7 . 9 8 . 4 <br /> Cond 168 220 206 210 <br /> 2nd Flow 43 . 7 8 . 0 - - <br /> pH 8 . 3 8 . 3 8 . 4 8 . 3 <br /> Cond 193 170 206 180 <br /> 3rd Flow 9 . 2 3 . 0 - - <br /> pH 8 . 1 8 . 4 8. 2 8. 6 <br /> Cond 234 380 255 290 <br /> 4th Flow 10 . 8 4 . 0 - - <br /> pH 8 . 2 8 . 0 8 . 3 8 . 5 <br /> Cond 177 280 203 290 <br /> According to the local irrigation office, 1989 was a below <br /> average year for run-off . The table shows the lower than average <br /> flow. <br /> Pond No. 5 , discharge point 001 , was the only pond that dis- <br /> charged during the year and it only discharged during March . The <br /> total discharge was 0 . 45 acre-feet . The pH was 8 . 2 and the con- <br /> ductivity was 1400 . The relatively low conductivity indicates <br /> that the discharge was a mix of surface run-off and discharge <br /> from the south underdrain. <br /> -1- <br />