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TABLE OF CONTENTS <br />4.14.3 COVERING COAL AND ACID AND TOXIC FORMING MATERIALS.............................................................44 <br />4.14.4 THIN OVERBURDEN................................................................................................................................45 <br />4.14.5 THICK OVERBURDEN..............................................................................................................................45 <br />4.14.6 REGRADING OR STABILIZING RILLS AND GULLIES.................................................................................45 <br />4.15 REVEGETATION REQUIREMENTS...... <br />.............46 <br />4.15.1 GENERAL REQUIREMENTS............................................................................................................................ 46 <br />4.15.1(4) VEGETATION MONITORING......................................................................................................................46 <br />4.15.2 USE OF INTRODUCED SPECIES.......................................................................................................................47 <br />4.15.3 SEEDING AND PLANTING...............................................................................................................................48 <br />4.15.4 MULCHING AND OTHER SOIL STABILIZING PRACTICES.................................................................................48 <br />4.15.5 GRAZING.......................................................................................................................................................49 <br />4.15.6 FIELD TRIALS................................................................................................................................................49 <br />4.15.7 DETERMINING REVEGETATION SUCCESS: GENERAL REQUIREMENTS AND STANDARDS ........................61 <br />4.15.8 REVEGETATION SUCCESS CRITERIA.......................................................................................................64 <br />4.15.9 REVEGETATION SUCCESS CRITERIA: CROPLAND...................................................................................75 <br />4.15. 10 REVEGETATION SUCCESS CRITERIA: PREVIOUSLY MINED AREAS: AREAS TO BE DEVELOPED FOR <br />INDUSTRIALOR RESIDENTIAL USE.......................................................................................................................... 76 <br />4.15.11 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMONSTRATIONS FOR REVEGETATION SUCCESS <br />REVEGETATION COMMUNITY MAPPING / STRATIFICATION..................................................................................... 76 <br />4.16 POSTMINING LAND USE.........................................................................................................................82 <br />4.16.1 GENERAL............................................................................................................................................... 82 <br />4.16.2 DETERMINING USE OF LAND.................................................................................................................. 82 <br />4.16.3 PRIOR TO RELEASE OF LANDS FROM THE PERMIT AREA IN ACCORDANCE WITH 3.03.1 (2) (C) .............. 82 <br />4.17 AIR RESOURCES PROCTECTION........................................................................................................82 <br />4.18 PROTECTION OF FISH, WILDLIFE, AND RELATED ENVIRONMENTAL VALUES.................82 <br />4.19 PROTECTION OF UNDERGROUND MINING.....................................................................................84 <br />4.20 SUBSIDENCE CONTROL.........................................................................................................................84 <br />4.21 COAL EXPLORATION <br />....................................................... 84 <br />4.21.1 <br />SCOPE.....................................................................................................................................................84 <br />4.21.2 <br />GENERAL RESPONSIBILITY OF PERSONS CONDUCTING COAL EXPLORATION ......................................... <br />84 <br />4.21.3 <br />REQUIRED DOCUMENTS......................................................................................................................... <br />84 <br />4.21.4 <br />PERFORMANCE STANDARDS...................................................................................................................85 <br />4.23.8 PREVENT POLLUTION OF SURFACE AND GROUNDWATER AND TO REDUCE FIRE HAZARDS....................88 <br />4.21.5 <br />REQUIREMENTS FOR A PERMIT............................................................................................................... <br />86 <br />4.22 CONCURRENT SURFACE AND UNDERGROUND MINING............................................................86 <br />4.23 AUGER AND HIGHWALL MINING.......................................................................................................87 <br />4.23.1 SCOPE.....................................................................................................................................................87 <br />4.23.3 PERFORMANCE STANDARDS...................................................................................................................87 <br />4.23.4 MAXIMIZE RECOVERABILITY OF MINERAL RESERVES........................................................................... <br />87 <br />4.23.5 UNDISTURBED AREAS OF COAL SHALL BE LEFT IN UNMINED SECTIONS ............................................... <br />88 <br />4.23.6 ABANDONED OR ACTIVE UNDERGROUND MINE WORKINGS..................................................................88 <br />4.23.7 SURFACE MINING ACTIVITIES AND HIGHWALL MINING.........................................................................88 <br />4.23.8 PREVENT POLLUTION OF SURFACE AND GROUNDWATER AND TO REDUCE FIRE HAZARDS....................88 <br />4.23.9 DIVISION SHALL PROHIBIT AUGER (HIGHWALL MINING) MINING.......................................................... <br />89 <br />4.23. 10 BACKFILL AND GRADING REQUIREMENTS.................................................................................................. <br />89 <br />4.23.11 HIGHWALL SHALL BE ELIMINATED............................................................................................................. <br />89 <br />4.24 OPERATIONS IN ALLUVIAL VALLEY FLOORS................................................................................................... <br />89 <br />4.25 OPERATIONS ON PRIME FARMLANDS............................................................................................................... <br />89 <br />4.26 MOUNTAINTOP REMOVAL................................................................................................................................90 <br />4.27 OPERATIONS ON STEEP SLOPES........................................................................................................................90 <br />Table of Contents iv Date Revised: 5/25/18 <br />Revision No: RN -07 <br />