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• <br />III IIIIIIIIIIIII III- <br />Environmenlal Planners, Scientists, and Engineers <br />December 7, 1994 e. ~ / ~• ~ <br />Mr. Harry Ranney ue~ iJ d 1994 <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman, Room 215 DiJieian a; ~~i;~,ar»~~ ~ N;.~,IapY <br />Denver, CO 80203 <br />Subject: Technical Revision 27 and NOV C-94-035 <br />Chimney Rock Mine, Kaiser Steel Resources, C-81-023 <br />Dear Mr. Ranney, <br />Please review the enclosed Small Area 6cemption Demonstration for the Pond 005 sediment cleanings <br />which were the subject of NOV C-94-035. This demonstration documents that discharge off the pond <br />cleanings will not resurt in an exceedance of the Settleable Solids standard of 0.5 ml/I fora 10-year 24- <br />hour storm event, to meet the performance standard found in Rule 4.05.2(3). Please file the demonstra- <br />tion at the end of Exhibft 7. Attached is a revised copy of page 2.053 and an updated revision of Map <br />8. The proposed public notice and the revised revision application form are also attached. <br />Please do not hesitate to callrf you have any questions. <br />Sincerely, <br />~~~~~ ~ ~ <br />//l,~ <br />Catherine W. Begej <br />Hydrologist <br />Attachments <br />cc. Mr. Mike Keegan w/o attachments <br />Archuleta County Clerk <br />5990 Greenwood Plaza Blvd. Suite 250 Englewood, CO 80111 <br />(303)850-0930 Fax (3031721-9298 <br />