DENR extends deadline to comment on Hyperion air quality permit

After receiving several requests for extension, the South Dakota Department of Environment and Natural Resources (DENR) is extending the public comment period on Hyperion�s draft Prevention of Significant Deterioration preconstruction air quality permit revisions to April 1.

In August 2009, the Board of Minerals and Environment issued Hyperion a preconstruction air quality permit. With the permit, Hyperion is authorized to begin construction of the Hyperion Energy Center in Union County. It will consist of a petroleum refinery and an integrated gasification, combined-cycle power plant that will process an average of 400,000 barrels per day of crude oil.

Hyperion submitted a request to extend the construction deadline from Feb. 20, 2011, to Aug. 20, 2012. The request included reviews of the new one-hour National Ambient Air Quality Standards for nitrogen dioxide and sulfur dioxide, inclusion of a coker quench water tank, and analyses of the Best Available Control Technology for the permitted equipment and greenhouse gas emissions.

Copies of the draft revised Hyperion air quality permit conditions and public notice are available on DENR�s website at http://denr.sd.gov/hyperionaqrfe.aspx.

For those without Internet access, hard copies of the draft revised permit conditions and public notice are available for viewing at DENR�s offices in Pierre or in the Akeley-Lawrence Science Center, University of South Dakota, 414 East Clark, Vermillion.  Copies of DENR�s draft revised permit conditions can also be obtained by writing to DENR�s Pierre office at 523 East Capitol, Joe Foss Building, Pierre, SD, 57501, or calling Kyrik Rombough, DENR Natural Resources Engineering Director, at 605-773-3151.

DENR will consider and address all comments timely submitted and issue a final permit decision within 30 days of the end of the public comment period. DENR will notify the applicant and each person who submitted written comments or requested notice of DENR�s final permit decision, including notification of any changes to the permit, based on the comments.

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