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TABLE OF CONTENTS <br />Table of Contents iv Date Revised: 12/14/22 <br /> Revision No: MR-245 <br />4.14.3  COVERING COAL AND ACID AND TOXIC FORMING MATERIALS ............................................................. 37  <br />4.14.4 THIN OVERBURDEN ................................................................................................................................ 37  <br />4.14.5  THICK OVERBURDEN .............................................................................................................................. 38  <br />4.14.6 REGRADING OR STABILIZING RILLS AND GULLIES ................................................................................. 38  <br />4.15 REVEGETATION REQUIREMENTS ...................................................................................................... 38  <br />4.15.1 GENERAL REQUIREMENTS ............................................................................................................................. 38  <br />4.15.1(4) VEGETATION MONITORING ...................................................................................................................... 39  <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 ....................................................................................................................................................... 40  <br />4.15.6 FIELD TRIALS ................................................................................................................................................ 40  <br />4.15.7 DETERMINING REVEGETATION SUCCESS: GENERAL REQUIREMENTS AND STANDARDS ........................ 42  <br />4.15.8 REVEGETATION SUCCESS CRITERIA ....................................................................................................... 43  <br />4.15.9 REVEGETATION SUCCESS CRITERIA: CROPLAND .................................................................................... 44  <br />4.15.10 REVEGETATION SUCCESS CRITERIA: PREVIOUSLY MINED AREAS: AREAS TO BE DEVELOPED FOR <br />INDUSTRIAL OR RESIDENTIAL USE ........................................................................................................................... 44  <br />4.15.11 REVEGETATION SAMPLING METHODS AND STATISTICAL DEMONSTRATIONS FOR REVEGETATION SUCCESS <br />REVEGETATION COMMUNITY MAPPING / STRATIFICATION ...................................................................................... 44  <br />4.16 POSTMINING LAND USE ......................................................................................................................... 49  <br />4.16.1 GENERAL ................................................................................................................................................ 49  <br />4.16.2 DETERMINING USE OF LAND .................................................................................................................. 49  <br />4.16.3 PRIOR TO RELEASE OF LANDS FROM THE PERMIT AREA IN ACCORDANCE WITH 3.03.1 (2) (C) ............... 49  <br />4.17 AIR RESOURCES PROCTECTION ......................................................................................................... 49  <br />4.18 PROTECTION OF FISH, WILDLIFE, AND RELATED ENVIRONMENTAL VALUES ................. 49  <br />4.19 PROTECTION OF UNDERGROUND MINING ..................................................................................... 51  <br />4.20 SUBSIDENCE CONTROL ......................................................................................................................... 51  <br />4.21 COAL EXPLORATION .............................................................................................................................. 51  <br />4.21.1 SCOPE ..................................................................................................................................................... 51  <br />4.21.2  GENERAL RESPONSIBILITY OF PERSONS CONDUCTING COAL EXPLORATION ......................................... 51  <br />4.21.3 REQUIRED DOCUMENTS ......................................................................................................................... 52  <br />4.21.4 PERFORMANCE STANDARDS ................................................................................................................... 52  <br />4.21.5 REQUIREMENTS FOR A PERMIT ............................................................................................................... 53  <br />4.22 CONCURRENT SURFACE AND UNDERGROUND MINING ............................................................. 53  <br />4.23 AUGER AND HIGHWALL MINING ....................................................................................................... 54  <br />4.23.1  SCOPE ..................................................................................................................................................... 54  <br />4.23.3  PERFORMANCE STANDARDS ................................................................................................................... 54  <br />4.23.4 MAXIMIZE RECOVERABILITY OF MINERAL RESERVES ........................................................................... 54  <br />4.23.5 UNDISTURBED AREAS OF COAL SHALL BE LEFT IN UNMINED SECTIONS ............................................... 54  <br />4.23.6 ABANDONED OR ACTIVE UNDERGROUND MINE WORKINGS .................................................................. 54  <br />4.23.7  SURFACE MINING ACTIVITIES AND HIGHWALL MINING ......................................................................... 54  <br />4.23.8  PREVENT POLLUTION OF SURFACE AND GROUNDWATER AND TO REDUCE FIRE HAZARDS .................... 55  <br />4.23.9 DIVISION SHALL PROHIBIT AUGER (HIGHWALL MINING) MINING .......................................................... 55  <br />4.23.10 BACKFILL AND GRADING REQUIREMENTS .................................................................................................. 55  <br />4.23.11 HIGHWALL SHALL BE ELIMINATED ............................................................................................................. 55  <br />4.24 OPERATIONS IN ALLUVIAL VALLEY FLOORS.................................................................................................... 55  <br />4.25 OPERATIONS ON PRIME FARMLANDS ............................................................................................................... 56  <br />4.26 MOUNTAINTOP REMOVAL ................................................................................................................................ 56  <br />4.27 OPERATIONS ON STEEP SLOPES ........................................................................................................................ 56