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ecS <br />STATE OF COLORADO <br />John W. Hickenlooper, Governor aF•co <br />Karin McGowan <br />Interim Executive Director <br />O <br />Dedicated to protecting and improving the health and environment of the people of Colorado <br />4300 Cherry Creek Dr. S. Laboratory Services Division <br />Denver, Colorado 80246 -1530 8100 Lowry Blvd. f 8776 6 <br />Phone (303) 692 -2000 Denver, Colorado 80230 -6928 Colorado Department <br />Located in Glendale, Colorado (303) 692 -3090 of Public Health <br />http: / /www.cdphe.state.co.us RECEIV =® and Environment <br />July 29, 2013 <br />Mr. Brian McGill <br />Freeport- McMoRan Company <br />Climax Molybdenum Mine ✓ <br />Highway 91 — Fremont Pass <br />Climax, Colorado 80429 <br />DIVISION OF ��OL4104770 <br />MINING AND SAFETY _ IV <br />✓om_ �qqq— z-19.3 <br />Re: Reply to Second Deadline Extension Request: Climax Mine Crusher Adit Vent Raise Asbestos <br />Disposal Shaft Closure <br />Climax Mine <br />Highway 91- Fremont Pass <br />S W/L,AK/CLI 2.4 <br />Mr. McGill, <br />The Colorado Department of Public Health and the Environment (the "Department ") Hazardous Materials and <br />Waste Management Division (the "Division ") has received the following request for a second extension of the <br />closure of the "asbestos shaft" addressed in the approved November 16, 2012 closure plan titled "Climax Mine <br />Crusher Adit Vent Raise Asbestos Disposal Shaft Closure Plan" (the "Plan ") at the Climax Molybdenum Mine <br />(the "Facility) in Climax, Colorado located on Highway 91 at the Fremont Pass. The first extension was addressed <br />by the Division's letter dated February 4, 2013 extending closure through September 2014. This recent request <br />(second request) was made through the following correspondence presented to the Division by the Facility. <br />Extension Request for Closure of Climax Mine Adit Vent Raise Asbestos Disposal Shaft. Prepared <br />by: Climax Molybdenum Company. Document dated: July 29, 2013. Document received: July 29, <br />2013. <br />The Division has reviewed this second extension request which would reschedule the closure plan activities to be <br />completed by September 2016. Based on this review it is the determination of the Division that a request be made <br />of the Facility to complete this activity no later than September 1, 2015 with the conditions that the following <br />conditions: <br />1) All structures and protective measures are fully maintained to ensure protection of human health and the <br />environment. <br />2) The adit shaft cannot be used for any disposal of any kind of additional materials. <br />3) The approved closure Plan will be followed as approved by the Division's conditional approval letter <br />dated January 8, 2013 during final closure activities. <br />