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Rider to Mining Permit Permit Date: January 25, 1994 Permit No.: C-81-012 Page 2 Stipulation No. 14 (Continued) THE PERMITTEE SHALL PROVIDE AN ASSESSMENT OF THE PROBABLE HYDROLOGIC CONSEQUENCES OF SECONDARY OR RETREAT MINING ON THE QUANTITY AND QUALITY OF SURFACE WATER IN CIRUELA, APACHE AND PETE CANYONS. ALL MONITORING MUST CONTINUE UNTIL DISCONTINUATION IS APPROVED BY THE DIVISION IN WRITING. Stipulation No. 15 THE PERMITTEE SHALL SUBMIT AN ANNUAL HYDROLOGIC MONITORING REPORT FOR THE NEW ELK MINE. THE MONITORING REPORT SHALL INCLUDE A SUMMARY AND ANALYSIS OF DATA COLLECTED DURING THE YEAR, INCLUDING: WATER USED IN THE MINING OPERATION; 2. MINE WATER DISCHARGES TO RECEIVING STREAMS (QUANTITY AND QUALITY); 3. MINE WATER INFLOWS (ANNUAL MINE INFLOW STUDY); 4. STREAM FLOWS AND QUALITY; 5. IMPACTS TO THE QUALITY AND QUANTITY OF ALLUVIAL AND BEDROCK AQUIFERS; AND 6. IMPACTS TO SPRING FLOWS AND QUALITY. THE MONITORING REPORT SHOULD INCLUDE A DESCRIPTION OF MITIGATIVE MEASURES TAKEN TO MINIMIZE DISTURBANCE TO THE PREVAILING HYDROLOGIC BALANCE. Stipulation No. 52 THE DIVISION'S REVIEW OF THE PROBABLE HYDROLOGIC CONSEQUENCES OF THE PROPOSED MINING OPERATIONS HAS DETERMINED THAT IMPACTS TO THE OVERALL HYDROLOGIC REGIME AND ASSOCIATED NATURAL RESOURCES ARE NOT ANTICI- PATED. THESE ADDITIONAL ITEMS, HOWEVER, SHOULD BE SUBMITTED BY THE PERMITTEE TO THE DIVISION TO MORE ADEQUATELY ADDRESS CERTAIN ISSUES. 1. THE PERMITTEE SHALL SUBMIT BY MARCH 21, 1994 A MORE PRECISE DEFINITION OF THE EFFECTS OF LONGWALL MINING SUBSIDENCE ON THE SURFACE WATER AND GROUNDWATER SYSTEMS. 2. THE PERMITTEE SHALL SUBMIT BY MARCH 21, 1994 AN ANALYSIS OF THE PREDICTIONS WITH REGARD TO THE HYDROLOGIC BALANCE MADE IN THE PERMITTEE'S AUGUST 12, 1980 WATER, WASTE AND LAND, LTD. HYDROLOGY REPORT. THIS ANALYSIS SHALL BE DERIVED FROM DATA OBTAINED IN CONJUNCTION WITH THE CURRENTLY APPROVED HYDROLOGIC MONITORING PLAN ESTABLISHED PURSUANT TO RULES 2.05.6(3)(b)(iv) AND 4.05.13. 3. THE PERMITTEE WILL SUBMIT TO THE DIVISION BY MARCH 21, 1994 A MORE DETAILED ANALYSIS OF THE STABILITY OF THE PERMANENT ENTRY SEALS AND OOWNSLOPE BARRIERS, PURSUANT TO RULE 2.05.6(3)(c), WITH REGARD TO HYDRAULIC HEADS ANTICIPATED AS THE MINE INUNDATES.