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RIDER TO MINING PERMIT Stipulation No. 5 THE PERMITTEE SHALL SUBMIT AN ANNUAL HYDROLOGY REPORT BY JANUARY 30 OF EACH YEAR WHICH PRESENTS AND DISCUSSES THE MONITORING DATA COLLECTED DURING THE PAST YEAR. Stipulation No. 17 THE PERMITTEE WILL SUBMIT TO THE DIVISION BY JANUARY 30 OF EACH YEAR AN ANNUAL REPORT WHICH INCLUDES A SUMMARY OF THE PREVIOUS CALENDAR YEAR'S PIT EXPANSION, THE CUMULATIVE TOTAL NUMBER OF ACRES STRIPPED, ACRES RECLAIMED, AND DISTURBED ACRES REMAINING TO BE RECLAIMED. THE REPORT WILL ALSO INCLUDE A MAP SHOWING ACTUAL RECLAIMED TOPOGRAPHY AND A REPORT OF BACKFILLING MASS BALANCE CALCULATIONS. Stipulation No. 20 ASH MATERIAL AT THE KEENESBURG MINE MUST BE BURIED A MINIMUM OF EIGHT (B) FEET BELOW THE FINAL POST-MINING RECLAIMED SURFACE. Stipulation No. 21 ASH MATERIAL AT THE KEENESBURG MINE MUST BE BURIED A MINIMUM OF FIVE (5> FEET ABOVE THE PROJECTED POST-MINING WATER TABLE. Stipulation No. 23 IN ADDITION TO THE LARAMIE-FOX HILLS MONITORING WELL INSTALLED NORTH- EAST OF THE ASH DISPOSAL CELLS, A MONITORING WELL SHOULD BE INSTALLED SOUTHWEST OF THE ASH DISPOSAL AREA. ALL MONITORING WELLS MUST BE INSTALLED AND FUNCTIONING AS DESIGNED PRIOR TO DISPOSAL OF ASH AT THE MINE SITE. WELL LOCATION, DESIGN AND CONSTRUCTION TECHNIQUES MUST BE APPROVED BY THE DIVISION PRIOR TO WELL CONSTRUCTION, FREQUENCY OF MONITORING FOR ASH DISPOSAL MONITORING WELLS WILL BE MONTHLY AND PARAMETERS TO BE ANALYZED FOR INCLUDE ALL PARAMETERS SAMPLED FOR DURING THE PASTE EXTRACT ANALYSIS OF ASH SAMPLES PLUS ALL PARAMETERS INCLUDED IN SAMPLING OF QUARTERLY WATER QUALITY SAMPLES. Stipulation No. 24 EACH YEAR, A MINIMUM OF ONE (1) REPRESENTATIVE FLY ASH AND ONE (1) REPRESENTATIVE BOTTOM ASH SAMPLE SHALL BE COLLECTED FROM THE BOILERS AT THE GOLDEN POWER PLANT. LABORATORY ANALYSIS WILL CONSIST OF SATURATION EXTRACTS AND E.P. TOXICITY TEST FOR EACH SAMPLE. ADDITIONAL FLY ASH AND BOTTOM ASH SAMPLES WILL BE COLLECTED AND ANALYZED IF, AT ANY TIME, A SOURCE OF COAL IS CHANGED. RESULTS OF SATURATION EXTRACTS AND TOXICITY TESTS WILL BE SUBMITTED TO THE DIVISION WITHIN 15 DAYS OF ANALYSIS.