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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......................................................................................................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........................60 <br /> 4.15.8 REVEGETATION SUCCESS CRITERIA.......................................................................................................63 <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 /> INDUSTRIAL OR RESIDENTIAL USE..........................................................................................................................75 <br /> 4.15.11 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMONSTRATIONS FOR REVEGETATION SUCCESS <br /> REVEGETATION COMMUNITY MAPPING/STRATIFICATION.....................................................................................75 <br /> 4.16 POSTMINING LAND USE.........................................................................................................................81 <br /> 4.16.1 GENERAL...............................................................................................................................................81 <br /> 4.16.2 DETERMINING USE OF LAND..................................................................................................................81 <br /> 4.16.3 PRIOR TO RELEASE OF LANDS FROM THE PERMIT AREA IN ACCORDANCE WITH 3.03.1 (2)(C)..............81 <br /> 4.17 AIR RESOURCES PROCTECTION........................................................................................................81 <br /> 4.18 PROTECTION OF FISH,WILDLIFE,AND RELATED ENVIRONMENTAL VALUES.................81 <br /> 4.19 PROTECTION OF UNDERGROUND MINING.....................................................................................83 <br /> 4.20 SUBSIDENCE CONTROL.........................................................................................................................83 <br /> 4.21 COAL EXPLORATION..............................................................................................................................83 <br /> 4.21.1 SCOPE.....................................................................................................................................................83 <br /> 4.21.2 GENERAL RESPONSIBILITY OF PERSONS CONDUCTING COAL EXPLORATION.........................................83 <br /> 4.21.3 REQUIRED DOCUMENTS.........................................................................................................................83 <br /> 4.21.4 PERFORMANCE STANDARDS...................................................................................................................84 <br /> 4.21.5 REQUIREMENTS FOR A PERMIT...............................................................................................................85 <br /> 4.22 CONCURRENT SURFACE AND UNDERGROUND MINING............................................................85 <br /> 4.23 AUGER AND HIGHWALL MINING.......................................................................................................86 <br /> 4.23.1 SCOPE.....................................................................................................................................................86 <br /> 4.23.3 PERFORMANCE STANDARDS...................................................................................................................86 <br /> 4.23.4 MAXIMIZE RECOVERABILITY OF MINERAL RESERVES...........................................................................86 <br /> 4.23.5 UNDISTURBED AREAS OF COAL SHALL BE LEFT IN UNMINED SECTIONS...............................................87 <br /> 4.23.6 ABANDONED OR ACTIVE UNDERGROUND MINE WORKINGS..................................................................87 <br /> 4.23.7 SURFACE MINING ACTIVITIES AND HIGHWALL MINING.........................................................................87 <br /> 4.23.8 PREVENT POLLUTION OF SURFACE AND GROUNDWATER AND TO REDUCE FIRE HAZARDS....................87 <br /> 4.23.9 DIVISION SHALL PROHIBIT AUGER(HIGHWALL MINING)MINING..........................................................88 <br /> 4.23.10 BACKFILL AND GRADING REQUIREMENTS..................................................................................................88 <br /> 4.23.11 HIGHWALL SHALL BE ELIMINATED.............................................................................................................88 <br /> 4.24 OPERATIONS IN ALLUVIAL VALLEY FLOORS...................................................................................................88 <br /> 4.25 OPERATIONS ON PRIME FARMLANDS...............................................................................................................88 <br /> 4.26 MOUNTAINTOP REMOVAL................................................................................................................................89 <br /> 4.27 OPERATIONS ON STEEP SLOPES........................................................................................................................89 <br /> Table of Contents iv Date Revised: 7/23/18 <br /> Revision No: TR-123 <br />