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understandings reached in that meeting. <br />Dorchester will conduct its room and pillar mining <br />operations in the vicinity of the water line as depicted on the <br />mine plan map in Appendix A. Because of the depth of the coal, <br />surface manifestations of subsidence are realistically expected <br />to be minimal. No barrier pillars or other special modifications <br />in the mining techniques are contemplated. The following <br />monitoring and mitigation measures will be implemented: <br />3.5.1 Monitoring <br />The subsidence monitoring line, depicted on the <br />Subsidence Monitoring Map in Appendix A, will be installed and <br />monitored quarterly to identify the location, nature and <br />magnitude of any subsidence which could potentially impact the <br />line. <br />3.5.2 Repair <br />Dorchester will purchase and maintain on site 50 feet of 12" <br />PVC pipe to serve as replacement pipe in the event of breakage <br />due to Dorchester's operations. Dorchester will repair or <br />replace appropriate sections of the water line which are <br />clearly shown by the monitoring program to have been damaged <br />by subsidence from Dorchester's operations. <br />3.5.3 Local Go ernment Coordination <br />Dorchester will continue to work closely with the Florence <br />authorities in all aspects of the above monitoring and repair <br />obligations. In addition, Dorchester will cooperate wherever <br />possible with those authorities in their planning efforts aimed <br />. at a long-term solution to the current problems of Florence's <br />water supply system. <br />29 <br />