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®E <br />C7~FlG <br />Greg Lewicki And Associates <br />9054 S. Forrest Drive Phone/Fax: (303) 346-5196 <br />Highlands Ranch, CO~USA 80126 )`Mail: lewicld7!a~attbi.com <br />TAoMas Rt," Pe~M,t Ne. M-r9rG -02.~ R@CG~V2f~ <br />qn~-a1 ~ <br />Fc~,-Co~ne: s Mgferra/5~ Xnc,/ MAR ~ 7 2002 <br />March 6, 2002 DO~nyp Fled pKkg <br />Divlsbn of Minerals 8 Geology <br />Wally Erickson. <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, 2"d Floor <br />Denver, CO 80203 ~ C~'~ <br />Q~.. ~ <br />Dear Wally: ~o~o~~'Q.ayJI~1 <br />~.. <br />Enclosed is a technical revision to the amendment recently submitted for the Thomas, <br />Pit of Four Corners Materials in Durango. Permit number is M-76-020. Changes have <br />been made to the jetty design in the river at the request of the Durango office of the <br />US Army Corps of Engineers. Basically, the jetty has been reduced in size and length <br />and an apron of pit run gravel has been proposed for the area immediately <br />downstream of the jetty. Other changes were proposed by the Corps but could not be <br />implemented since the design would not be capable of handling the 100 year event. <br />The design we have shown is adequate to handle the 100 year event and has been <br />modified to be less impacting to the river and as aesthetically pleasing as possible. <br />Sincerely, _ /, <br />y~~e es~~e/ <br />Greg L wicki, P. E. ~/ <br />Greg Lewicki and Associates <br />