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Ash Disposal <br />DISPOSAL ACTIVITIES <br />For the calendar year 2012, a total of 35,029 tons (1,523 truckloads) of <br />mixed fly and bottom ash were transported to, and disposed of at the Coors <br />Energy Company, Keenesburg Mine site. Because A -Pit reclamation is <br />complete, and that pit has been closed, the entire quantity of ash delivered in <br />2012 was placed in South B -Pit. Thus, the 2012 ash disposal activity brings <br />the total B -Pit ash volume to 752,231 tons (5,667 tons in North B -Pit, and <br />746,564 tons in South B -Pit). The total amount of ash disposed of at the <br />Keenesburg Mine between 1987 and the end of 2012 was 996,584 tons. <br />In accordance with the conditions of the Permit, the Keenesburg site <br />continues to accept only ash that is the by- product of the coal combustion <br />process, and which is generated at the power plant located in Golden, <br />Colorado, the MillerCoors, LLC (formerly Coors Brewing Company) plant <br />location. Since September, 1995 this power plant has been owned and <br />operated by Colorado - Golden Energy Corporation (CGEC). (formerly <br />Trigen - Colorado Energy Corporation). According to the agreements <br />between CGEC and CEC, ash from this power plant will continue to be <br />transported to, and used for reclamation at the Keenesburg site until the <br />reclamation requirement has been satisfied. <br />During 2012 the steam coal used to fuel the CGEC power plant was <br />supplied by Twenty Mile Coal Company (a Peabody Coal Company <br />subsidiary) from its mine located at Energy, Colorado (southwest of <br />Steamboat Springs). This coal has been previously tested and approved in <br />accordance with the requirements of the Permit, and has been supplied to <br />and used at the power plant for multiple years. As of the beginning of the <br />year (2012) the decision was made to cease the use of stoker coal at the <br />power plant. The stoker boiler has been "mothballed" and is not expected to <br />resume operation. Thus, unlike previous years, no stoker coal was <br />consumed during 2012. <br />Samples of the ash produced by the burning of coal at the CGEC power <br />plant are collected annually as part of the ongoing qualification process of <br />the ash for disposal at the Keenesburg Mine site. Ash "grab samples" (both <br />AHR -2012 -77- <br />