Laserfiche WebLink
iii iiiiiiiiiiiii iii <br />999 <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Narural Resources <br />1313 Sherman St., Room 215 <br />Denver, CO A0203 <br />Phone: 13031 866-3567 <br />FAX: (303) 8328106 <br />October 19, 1993 <br />Mr. Ralph Lopez <br />Environmental Engineer <br />Basin Resources, Inc. <br />14300 Highway 12 <br />Weston, CO 81091 <br />RE: New Elk Mine, Permit No. C-81-012, Basin Resources, Inc. <br />Technical Revision No. 28, RDA Access Road, Adequacy Review. <br />Dear Mr. Lopez: <br />The Division has reviewed the submitW for the RDA access road reclassification and has the following <br />questions or comments: <br />1. Several items may need to be changed in the RDA Ditch Design table: <br />a. For ditch section #1, the depth is .47 feet. <br />b. For ditch section #4, the depth is .87 feet and the width is 5.21 feet. <br />c. For ditch section tt6, the depth is .57 feet. <br />2. Please provide page numbers and the revision date on each page, for insertion into the permit. <br />or ro[o <br />~~~ b <br />0 <br />.~, <br />~ rar6 ~ <br />Rny Romrr <br />,overnor <br />michael B. Long <br />Drvision Dirtt for <br />3. The design for Culvert B uses a peak discharge of about 3.5 CFS. However, from the watershed map <br />provided, it appears that culveA B receives the runoff from Watershed #5, which has a peak ntnoff of <br />4.02 CS. Please explain. <br />4. Does the operator intend to assign a ditch type (A, B, etc.) to the ditches? In either case, please <br />provide a map showing the ditches and their cross-sectional measurements. <br />If you have any questions, please call me. <br />Sincerely, <br />)~ ~~~~ <br />oseph J. h <br />Environmental Protection Specialist <br />cc: Dan Hernandez, DMG <br />Cathy Begej, Greystone Consulting <br />STATE OF COLORADO <br />m: \osslscm\newellt. trv <br />