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2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND ACTIVITIES -- <br />MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION PLANS. <br />2.05.6 Mitigation of Surface Coal Mining Operation Impacts. (Cont'd.) <br />(3) (b) (iii) (Cont'd.) <br />for the features in and around this area and monitoring of selected sites will be renewed <br />approximately one year prior to any further development of the East Mine. <br />Surface water stations UERC and LERC were established as the result of a DRMS mine inspection <br />on November 25, 1986. Division concerns with sediment transport and control during and after <br />construction of the West mine prompted the establishment of this monitoring. These sites are <br />located above (UERC) and below (LERC) the area disturbed by construction of the West mine. <br />Grab samples from these sites are collected and analyzed for total suspended solids and total <br />dissolved solids. These sites were initially monitored on a weekly basis with monitoring <br />subsequently reduced to a monthly basis (see CMLRD inspection report dated 01- 15 -86). The <br />Operator petitioned the Division for a further reduction in the frequency of monitoring at these sites <br />as part of TR -24. UERC and LERC are presently monitored in accordance with Table 1, Surface <br />Water Appendix, Volume 4. <br />The Operator believes that periodic reevaluation of the surface water monitoring program is <br />necessary and will report to the Division monitoring results and projected changes to the monitoring <br />program in the "Annual Hydrology, Subsidence, and Mine Inflow Report". The "Annual Hydrology, <br />Subsidence, and Mine Inflow Report" will be submitted to the Division by April 30 of each year. <br />Monitoring specified Volume 4 Tables 1 and 2 will continue until cessation of operations. Changes <br />will be addressed by technical revision. <br />Past Groundwater Monitoring - Permit and Adjacent Areas <br />The Operator monitored three types of groundwater; springs and associated ponds, deep bedrock <br />groundwater, and alluvial source groundwater. With one exception, springs can also be considered <br />as alluvial source groundwater. Spring 25 is associated with a fault and typically exhibits chemistry <br />more similar to deep bedrock groundwater sources. <br />Fifteen springs numbered 16 through 31, were chosen for monitoring each month during 1983 and <br />1984 to ascertain baseline hydrology conditions within the entire permit area. Field parameters, <br />including pH, temperature, and electroconductivity were measured monthly at these locations. <br />Discharges from the springs were also measured with a portable trapezoidal 60 "V" flume, <br />manufactured by the Powlus Manufacturing Company of Twin Falls, Idaho. Quarterly water samples <br />were taken for laboratory analysis. Refer to the Surface Water Appendix in Volume 4 for monitoring <br />information. Those springs which issued into nearby ponds are identified as "spring and pond ". <br />See Map No. 4 -1 for the location of the springs monitored. <br />The responsibility for monitoring springs 16 through 23 will be transferred to the Bowie No. 2 Mine <br />by PR -04. <br />Generally, CWI's deep bedrock groundwater monitoring program consisted <br />PR -04 -120- 06/10 <br />l9 l -P ,_dvCf-> <br />