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October 11, 2011 <br />Page i <br />NEW ELK COAL COMPANY <br />SUBSIDENCE CONTROL, MONITORING, AND MITIGATION PLAN <br />TABLE OF CONTENTS <br />Page <br />1.0 INTRODUCTION ................................................................................. ............................... l <br />2.0 BACKGROUND INFORMATION ....................................................... ..............................2 <br />3.0 SUBSIDENCE PREDICTION ANALYSIS AND RESULTS ............... ..............................5 <br />4.0 SUBSIDENCE PLANS BY SURFACE STRUCTURE CLASS ........... .............................12 <br />4.1 <br />Gas Wells .................................................................................. .............................12 <br />4. 1.1 <br />Gas Well Subsidence Control Plan ............................... .............................15 <br />4.1.2 <br />Gas Well Monitoring Plan ............................................ .............................15 <br />4.1.3 <br />Worst Possible Consequences of Damage to Gas Wells ...........................16 <br />4.1.4 <br />Gas Well Damage Mitigation Plan ............................... .............................16 <br />4.2 <br />Gas Pipelines ............................................................................. .............................16 <br />4.2.1 <br />Gas Pipeline Subsidence Control Plan .......................... .............................16 <br />4.2.2 <br />Gas Pipeline Monitoring Plan ....................................... .............................16 <br />4.2.3 <br />Worst Possible Consequences of Damage to Gas Pipelines ...................... <br />17 <br />4.2.4 <br />Gas Pipeline Damage Mitigation Plan .......................... .............................17 <br />4.3 <br />Gas Pipeline Ancillary Structures ............................................. .............................17 <br />4.3.1 <br />Gas Pipeline Ancillary Structure Subsidence Control Plan .......................17 <br />4.3.2 <br />Gas Pipeline Ancillary Structure Monitoring Plan ....... .............................17 <br />4.3.3 <br />Worst Possible Consequences of Damage to Gas <br />Pipeline Ancillary Structures ........................................ .............................17 <br />4.3.4 <br />Gas Pipeline Ancillary Structure Damage Mitigation Plan .......................18 <br />4.4 <br />Water <br />Pipeline ........................................................................... .............................18 <br />4.4.1 <br />Water Pipeline Subsidence Control Plan ...................... .............................18 <br />4.4.2 <br />Water Pipeline Monitoring Plan ................................... .............................18 <br />4.4.3 <br />Worst Possible Consequences of Damage to Water Pipelines ..................18 <br />4.4.4 <br />Water Pipeline Damage Mitigation Plan ...................... .............................18 <br />4.5 <br />Water <br />Pipeline Ancillary Structures ......................................... .............................18 <br />4.5.1 <br />Water Pipeline Ancillary Structure Subsidence Control Plan ...................18 <br />4.5.2 <br />Water Pipeline Ancillary Structure Monitoring Plan .... .............................18 <br />4.5.3 <br />Worst Possible Consequences of Damage to Water <br />Pipeline Ancillary Structures ........................................ .............................18 <br />4.5.4 <br />Water Pipeline Ancillary Structure Damage Mitigation Plan ....................19 <br />DISCLAIMER:This report contains professional opinions based on information provided by the <br />Owner. AN makes no warranties, either expressed or implied, as to the accuracy or <br />completeness of the information herein. Opinions are based on subjective interpretations of <br />geotechnical data; other equally valid interpretations may exist. Identification and control of <br />hazardous conditions are the responsibilities of the Owner. <br />Agapito Associates, Inc. <br />