Laserfiche WebLink
Mr. David Berry <br />Senior Environmental Protection Specialist <br />December 19, 1997 <br />Page 5 <br />l7. Is there an existing means to monitor water accumulation within the Beaz Mine? Are you <br />performing such monitoring? <br />Beaz -There is no means to monitor water accumulation within the Beaz No. 3 Mine. <br />18. CDMG has previously requested that MCC compute "time to fill" calculations for the <br />West Elk Mine, and to evaluate the PHCs associated with this scenazio. Please provide <br />the compazable hydrologic analysis for the Bear Mine. What aze the projected PHCs, <br />including slope stability, when the Beaz Mine is filled with water? <br />Beaz - No "time to fill" calculations or PHC projections have been made by Beaz for <br />mine dischazge. <br />19. Please characterize the general water quality impacts to the North Fork posed by Beaz <br />Mine operations, including both "point" and "nonpoint" impacts. How has stormwater <br />runoff from the mine site been managed historically? How is it being managed now? <br />How do these impacts compaze with those seen from the current Edwazds Mine <br />dischazge? <br />Beaz -The PHC section of Beaz's mining permit (File #14) presents most of the <br />requested data. No comparison has been made of this data compazed to the impacts from <br />the recent mine dischazge. Run-off from the mine site has be contained in the sediment <br />pond. <br />20. From the onset of the landslide in mid-November to the present, have you observed <br />smoke emerging from cracks and snow melting in particular locations? Were there any <br />"hot spots" within the Beaz Mine or adjacent mines? <br />Beaz - No smoke has been observed emerging from cracks nor snow observed melting. <br />Bear had two "hot spots" within the Beaz Mine. One of the hot spots was in the pillaz <br />between the intake and return approximately 140-feet inby the portal. It was <br />approximately four to five feet long. The pillaz was cooled by water injection into the hot <br />spot. The second hot spot was in the small triangulaz shaped pillaz in the return neaz the <br />portal. This pillaz was also cooled with water injection. Bear has not investigated the <br />presence of "hot spots" in adjacent mines. <br />21. How might an underground fire affect the behavior of this landslide (e.g., could fire <br />compromise pillaz integrity and stability, enhance secondary porosity, "focus" <br />groundwater flow dischazges into the Edwazds Mine, or increase air pressure so as to <br />impart slope stability)? <br />