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<br />2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND <br />MINING ACTIVITIES -MINIMUM REQUIREMENTS FOR OPERATION AND <br />RECLAMATION PLANS. <br />2.05.6 Mitigation of Surface Coal Mining Operation Impacts. (Cont'd.) <br />(3) (b) (iii) (Cont'd.) <br />are situated over and adjacent to the currently inactive East Mine workings. <br />Development of the East Mine was halted in 1986 due to a mine fire. Ample <br />baseline data exists for the features in and around this area and monitoring <br />of selected sites will be renewed approximately one year prior to any further <br />development of the East Mine. <br />The operator believes that periodic reevaluation of the groundwater <br />monitoring program is necessary and will report to the Division monitoring <br />results and projected changes to the monitoring program in the "Annual <br />Hydrology, Subsidence, and Mine Inflow Report". The "Annual Hydrology, <br />Subsidence, and Mine Inflow Report" will be submitted to the Division by <br />April 30 of each year. Groundwater monitoring specified in Tables 3 and 46 <br />of Volume 4 will continue until cessation of operations and/or approval of the <br />Division. <br /> <br />Post Reclamation Monitoring <br />When regrading and backfilling of the east mine site is complete, nine <br />piezometers will be installed in the backfilled wedges to monitor groundwater <br />saturation. The piezometers will be installed where shown on Map 6A-5D. <br />One piezometer will be located in the fill wedge above the crushing and <br />screening level. Two piezometers will be located in the fill wedge above the <br />shop level. One piezometer will be located in the fill wedge above the <br />parking level and two piezometers will be located in the fill wedge above the <br />office level. Three piezometers will be located in the fill wedge above the <br />fan level. The piezometers will be installed throughout the entire thickness <br />of the fill wedges. The piezometers will be monitored quarterly through the <br />first two years following backfilling and annually in June thereafter for the <br />duration of the reclamation liability period or until cessation of monitoring is <br />approved by the Division. If unacceptable saturation occurs within any of the <br />fill wedges, remedial measures would be developed and implemented by the <br />operator. Atypical piezometer well completion diagram is presented in <br />Volume 6A, the Phase II Study, Geo-Hyro Consulting, Plate 6. <br />L~ <br />TR 96-028 124 <br />~pPPROV6D 1 ~/ty/99 <br />Revised 4/27198 <br />