Laserfiche WebLink
2.05 APPLZCATZCIV FCR PFSaQT FQ2 SURFACP. CR DtIDH~ID ?II~DaXa M.'1'I7ITZF8 - <br />RBQQIItB~SlfB FOR OPFRATZCN ArID RHCS.AlII~TZON FLANS. <br />2.05.6 Mitigation of Surface Coal Mining Operation Ilopacts. (Cont'd.) <br />(3) (b) (iii) (Cont'd.) <br />for the features in and around this area arc2 monitoring of selected <br />sites will be renewed approximately one year prior to any further <br />development of the Fast Mine. <br />Surface water stations UII2C aril I.II2C were established as the result of <br />a Q~IIRD mine inspec-tion on November 25, 1986. Division concerns with <br />sediment transport and control during and after construction of the <br />West mine prat~ted the establishment of this monitoring. these sites <br />are located above (UII2C) and belv+~ (LYI2C) the area disturbed by <br />construction of the West mine. Grab sales fran these sites are <br />collected and analyzed for total suspended solids and total dissolved <br />solids. 'These sites were initially monitored on a weekly basis with <br />monitoring subsequently reduced to a monthly basis (see CrffRD <br />inspection report dated 01-15-86). COVCC petitione3 the Division for <br />a further reduction in the frequency of monitoring at these sites as <br />part of TR-24. UERC and L,fRC are presently monitored in accordance <br />with Table 1, Surface Water Appendix, Volume 4, <br />~VCC believes that periodic reevaluation of the surface water <br />monitoring program is necessaZy and will report to the Division <br />monitoring results aryl projected changes to the monitoring Program in <br />• the "Annual Hydrology, Subsidence, aril Mine Inflow Report". 'The <br />"Annual Hydrology, Subsidence, and Mine Inflow Report" will be <br />sub[nitted to the Division by April 30 of each year. Monitoring <br />specified Volume 4 Tables 1 and 2 will continue until cessation of <br />operations. Changes will be addressed by technical revision. <br />Past Groundwater Monitoring -Permit and Adjacent Areas <br />CWI monitored three types of grouurdwater; springs and associated ponds, <br />deep bedrock grourxlvrater, and alluvial crvimp groundwater. With one <br />exception, springs can also be considered as alluvial source <br />c~oundwater. Spring 25 is associated with a fault aril typically <br />exhibits chemistry more similar to deep bedroc3c groundwater sources. <br />Fifteen springs numbered 16 throuegh 31, were chosen for monitoring each <br />month during 1983 and 1984 to ascertain baseline hydrology conditions <br />within the entire permit area. Field parameters, including pH, <br />temperature, and electrooonductivity were measured monthly at these <br />locations. DisGrarges fran the springs were also measured with a <br />portable trapezoidal 60° "V" flume, manufactured by the Powlus <br />Manufacturing Coicq~any of 'Twin Falls, Idaho. Quarterly water samples <br />were taken for laboratory analysis. Refer to the Surface Water <br />Appendix in Volume 4 Pon monitoring information. Those sprirxls which <br />issued into nearby ponds are identified as "spring and pond". See Map <br />. -i i iGJ' ui i'~~.iG]7 Gi ui +uYl i~'~`S illGYti w1`~'~. <br />Generally, CWI's deep bedrock groundwater monitoring program consisted <br />TR 93-24 Revised 12/10/93 <br />120 <br />