COLORADO
07/22/2010


PUEBLO, Colo., July 22
Colorado Electric and Black Hills Colorado IPP, subsidiaries of Black Hills Corp., were issued an air permit
by the State of Colorado Department of Public Health and Environment and immediately began
construction on two generation projects that will serve more than 93,300 Black Hills Energy - Colorado
Electric utility customers in southern Colorado beginning Jan. 1, 2012.

"Receiving our air permit is an important milestone for these Black Hills generation projects, and now we
have begun construction at the Pueblo Airport site," said David R. Emery, chairman, president and chief
executive officer of Black Hills Corp. "We are on track to have both plants ready for commercial operation
by the end of 2011 as planned. Most of the major equipment for the projects has been purchased,
contracts have been awarded for the construction of water and gas lines, a water supply agreement has
been executed, the annexation agreement has been approved by the City of Pueblo and the process to
select the remaining contractors is well underway."

In June 2009, Black Hills filed an initial application for an air permit with the State of Colorado Department
of Public Health to construct and operate its new utility generating plant, and in September 2009, Black
Hills submitted a revised application to include the Black Hills Colorado IPP plant. Both generation
projects will be located on a site near the Pueblo Airport. As many as 400 local jobs will be created during
the construction phase, and once completed, the Black Hills facilities will create about 15-20 permanent
highly technical jobs in southern Colorado.
Black Hills Receives Air Permit for Colorado Power Plant Projects
Jerry,
It is true they have their air permits, Packages are being bid right now, the project will be built 100%
union, We are a long way from putting travelers on that sight. I would venture to bet January as the best
bet. They have a lot of work to do prior to seeing any structure going up. These plants are 2- 100
megawatt simple cycle gas generators and 2- 100 megawatt combined cycle generators, they will start
construction on the 2 simple cycles, then about midway through the simple cycle construction schedule
they will start the 2 combined cycle projects. they are all in the same location. I would appreciate it if you
would post it to your web site that we are months away from needing travelers and if you want to check
back with me around November I would be glad to give you an update.
Thanks,

Rick Allen
UA local 58
UPDATE
08/01/2010
Local 58
229 East Moreno Ave., Colorado
Springs, CO 80903. (719) 633-4052
Job Line Number (719) 633 - 4052
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