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Mr. David Berry <br />Senior Environmental Protection Specialist <br />December 19, 1997 <br />Page 9 <br />40. When and why did the slump occur that exposed the outflow from the Edwards portal? <br />What aze the weathered concrete and steel materials associated with? <br />Bear -The slump occurred that exposed the mine outflow on November 17, 1997. The <br />cause of the slump was virtually complete saturation. The weathered concrete and steel <br />materials are associated with the tipple and or portal of the Clark and Edwards mines. <br />41. Provide location, elevation and data from any slope stability movements in the vicinity of <br />the Bear Mine facility. <br />Bear -See data compiled by UTE Engineering and Surveying Company (File #10). <br />42. Please provide copies of any aerial photographs or photogrametric maps taken and/or <br />constructed in the last 4 years. <br />Bear - No aerial photographs or photgrametric maps have been taken or constructed in the <br />last four years. <br />43. When was the reclamation of the coal reclaim conveyor and ventilation tunnel staged and <br />completed? Where did the material come from to backfill the reclaim and ventilation <br />tunnels? ow was this water handled when reclaiming the reclaim tunnel and vent? How <br />were these inflows sealed at reclamation? <br />Bear -The reclaim and ventilation tunnel was reclaimed during October 1997. Water was <br />pumped to the pond to facilitate reclamation. The reclaim and ventilation tunnels are <br />temporarily backfilled with gob. The flow did not have to be sealed. The flow is <br />apparently absorbed by the alluvium. <br />44. When was water first observed in the reclaim and vent tunnels? How has this water been <br />handled? Please provide historic flows, field parameters and chemistry. <br />Bear -There has been some water in the reclaim tunnel since it was constructed in 1981 <br />or 1982. The water was typically a problem during high river flow. For field parameters <br />see number 38 above. During 1997, water in the reclaim tunnel was abnormal. Typically <br />the reclaim tunnel was dry during July and August. However, during 1997 there was <br />water in the tunnel all year. <br />45. Please provide an accurate (surveyed) map of all of the Beaz No. 3 Mine portals, main <br />entries, and outby facilities (stack tube, reclaim tunnel, reclaim vent, etc,), along with the <br />Edwards portals, main entries and outby facilities including elevations and coordinates. <br />