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Technical Revision <br />page 3 <br />• rather than as stated in original technical revision. No additional <br />disturbance of the hillside is forseen, except as required for in- <br />stalling the 30" culvert. <br />V Sediment Control/Hydrology: <br />There will be no water discharged from the West Aline portals. <br />Alining activities associated with the mine have been dry, requiring <br />make-up water to satisfy underground activities. Water sources <br />µz11 be those listed in the Permit Application, Alay 1980, page 25. <br />For sediment control, the calculations are included in previously <br />submitted material as follou5: <br />a) {Pest Aline Sediment Fond - pages 7 8. 8 of Ekhibit T, Permit <br />• Application, play 1980 <br />b) The sediment control calculations submitted as an amendment <br />in ansver to questions submitted for the Fast Lease Permit <br />Application contain typical diversion ditch calculations for <br />the 14est Mine and apply to this application. The typical <br />calculation is a µorst case basis and will control the con- <br />struction of all required diversion structures. <br />c) The map is divided into areas delineated 1, lA, 2, 2A, etc. <br />North of, and above these areas, it is undisturbed ground. <br />Diversion is effected by diversion ditches running Fast and <br />West from above the portals, a 30 inch culvert to carry water <br />from the gulch, and the highway barrow ditch north of Colorado <br />Highway 133, at the coal handling facilities. Water diverted <br />• Fast will flow through the diversion ditch to a culvert under <br />