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<br />iii iiiiiiiiiiiii iii <br />999 <br />r <br />Mr. Jim Stevens <br />July 21, 1987 <br />Page Two <br />Arizona crossing <br />Arizona Crossing at pump road <br />(Ditch flea) 2/3 ,1/2 <br />U = i.4t3u/n A r o <br />Q = 109.5 cfs <br />~ ~, <br />i <br />Profile <br />D .1.3 ft with d.3' freeboard (flowline depth = 1.0 ft at ~. <br />F1 = 1(d <br />r = A/WP = 5d/50 = 1.1010 <br />n = N.035 <br />S = 0.01 <br />l~ = 212.29 cfs O.K. <br />(4) The pwx3er house road is not used except for security personnel. As <br />you are aware, rIFC is not blasting nor do we have plans to blast. M1H~ <br />plans to put an "Arizona Crossing" at this location rather than <br />culvert. <br />East Portal Area <br />(5) LiFY: is planning to install a 36" culvert at this location. the culvert <br />will allow tramming from our proposed railroad car dump to the raw mal <br />stockpile. `This plan will be submitted as a mimr revision. <br />(n) Yes, WFe; will need to install a culvert at the point D-'25 intersects <br />the haul road north of the transfer building. <br />(7) WFC has two options as we see it. We can either install culverts or <br />install a drop inlet structure just west of t~ce newly designated i~au1 <br />road. This will be determined during field construction. <br />If you have any questions regarding the above, please do not hesitate <br />to contact me. <br />Sincerely, <br />~~~ s~' <br />David M. Stout <br />rhvironmental Coordinator <br />UIyLS/tl <br />