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TABLE OF CONTENTS <br /> 4.14.3 COVERING COAL AND ACID AND TOXIC FORMING MATERIALS 36 <br /> 4.14.4 THIN OVERBURDEN 37 <br /> 4.14.5 THICK OVERBURDEN 37 <br /> 4.14.6 REGRADING OR STABILIZING RILLS AND GULLIES 37 <br /> 4.15 REVEGETATION REQUIREMENTS 38 <br /> 4.15.1 GENERAL REQUIREMENTS 38 <br /> 4.15.1(4)VEGETATION MONITORING 38 <br /> 4.15.2 USE OF INTRODUCED SPECIES 39 <br /> 4.15.3 SEEDING AND PLANTING 40 <br /> 4.15.4 MULCHING AND OTHER SOIL STABILIZING PRACTICES 40 <br /> 4.15.5 GRAZING 41 <br /> 4.15.6 FIELD TRIALS 41 <br /> 4.15.7 DETERMINING REVEGETATION SUCCESS: GENERAL REQUIREMENTS AND STANDARDS 48 <br /> 4.15.8 REVEGETATION SUCCESS CRITERIA 51 <br /> 4.15.9 REVEGETATION SUCCESS CRITERIA:CROPLAND 63 <br /> 4.15.10 REVEGETATION SUCCESS CRITERIA: PREVIOUSLY MINED AREAS: AREAS TO BE DEVELOPED FOR <br /> INDUSTRIAL OR RESIDENTIAL USE 63 <br /> 4.15.11 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMONSTRATIONS FOR REVEGETATION SUCCESS <br /> REVEGETATION COMMUNITY MAPPING/STRATIFICATION 63 <br /> 4.16 POSTMINING LAND USE 69 <br /> 4.16.1 GENERAL 69 <br /> 4.16.2 DETERMINING USE OF LAND 69 <br /> 4.16.3 PRIOR TO RELEASE OF LANDS FROM THE PERMIT AREA IN ACCORDANCE WITH 3.03.1 (2)(C) 69 <br /> 4.17 AIR RESOURCES PROCTECTION 69 <br /> 4.18 PROTECTION OF FISH,WILDLIFE,AND RELATED ENVIRONMENTAL VALUES 69 <br /> 4.19 PROTECTION OF UNDERGROUND MINING 71 <br /> 4.20 SUBSIDENCE CONTROL 71 <br /> 4.21 COAL EXPLORATION 71 <br /> 4.21.1 SCOPE 71 <br /> 4.21.2 GENERAL RESPONSIBILITY OF PERSONS CONDUCTING COAL EXPLORATION 71 <br /> 4.21.3 REQUIRED DOCUMENTS 71 <br /> 4.21.4 PERFORMANCE STANDARDS 72 <br /> 4.21.5 REQUIREMENTS FOR A PERMIT 73 <br /> 4.22 CONCURRENT SURFACE AND UNDERGROUND MINING 73 <br /> 4.23 AUGER AND HIGHWALL MINING 74 <br /> 4.23.1 SCOPE 74 <br /> 4.23.3 PERFORMANCE STANDARDS 74 <br /> 4.23.4 MAXIMIZE RECOVERABILITY OF MINERAL RESERVES 74 <br /> 4.23.5 UNDISTURBED AREAS OF COAL SHALL BE LEFT IN UNMINED SECTIONS 74 <br /> 4.23.6 ABANDONED OR ACTIVE UNDERGROUND MINE WORKINGS 74 <br /> 4.23.7 SURFACE MINING ACTIVITIES AND HIGHWALL MINING 74 <br /> 4.23.8 PREVENT POLLUTION OF SURFACE AND GROUNDWATER AND TO REDUCE FIRE HAZARDS 75 <br /> 4.23.9 DIVISION SHALL PROHIBIT AUGER(HIGHWALL MINING)MINING 75 <br /> 4.23.10 BACKFILL AND GRADING REQUIREMENTS 75 <br /> 4.23.11 HIGHWALL SHALL BE ELIMINATED 75 <br /> 4.24 OPERATIONS IN ALLUVIAL VALLEY FLOORS 75 <br /> 4.25 OPERATIONS ON PRIME FARMLANDS 76 <br /> 4.26 MOUNTAINTOP REMOVAL 76 <br /> 4.27 OPERATIONS ON STEEP SLOPES 76 <br /> Table of Contents iv Date Revised: 12/20/19 <br /> Revision No: TR-135 <br />