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HEC CO2 BACT Analysis (1083.72kb)
June 1, 2009
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Hyperion Refining LLC requested RTP Environmental Associates, Inc. prepare a Best Available Control Technology analysis of carbon dioxide emissions from the Hyperion Energy Center in Union County, South Dakota. This report presents the results of that analysis.
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SD BME Site Tour Maps (690.81kb)
April 15, 2009
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Maps given to the South Dakota Board of Minerals and Environment during the Siouxland Site tour on April 15th, 2009.
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HEC Overview Presented at the 6th Annual Canadian Oil Sands Summit (1312.24kb)
January 14, 2009
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Presentation given by Project Executive Preston V. Phillips in Calgary, Alberta on January 13th, 2009.
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DENR's Response to Comments Received on the Draft PSD Air Quality Permit (1296.91kb)
December 15, 2008
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DENR reviewed everyone’s comments but no changes to the draft PSD air quality permit resulted from those that took this opportunity to support or oppose the project without providing specific comments. This document contains DENR’s responses to the comments received during the public notice period. In cases where the comment resulted in a change to the draft PSD air quality permit, the changes may be viewed in the proposed PSD air quality permit with additions to the permit represented in bold, blue, and underlined, and deletions represented in red with overstrikes. A summary of the comments and DENR’s responses follows.
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Proposed PSD Air Quality Permit (322.18kb)
December 15, 2008
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Pursuant to Chapter 34A-1-21 of the South Dakota Codified Laws and the Air Pollution Control Regulations of the State of South Dakota and in reliance on statements made by the owner designated below, a permit to construct and operate is hereby issued by the Secretary of the Department of Environment and Natural Resources. This permit authorizes Hyperion to construct and operate the permitted units at the Union County, SD site.
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Hyperion's Comments on the SD DENR's Draft Air Permit (1207.15kb)
October 27, 2008
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We concur with the conclusion reached by the DENR that Hyperion will construct and operate in compliance with all state and federal air quality requirements established to protect public health and the environment.
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Statement of Basis (1430.5kb)
September 11, 2008
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The Statement of Basis provides DENR's description of the derivation of the conditions in the draft permit and the reasons for them. This includes, among other things, regulatory applicability determinations, case-by-case determinations of best available control technology, and development of adequate compliance demonstration techniques.
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Draft Air Permit (688.09kb)
September 11, 2008
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DENR Air Quality engineers have completed a thorough technical review of the 613-page air quality permit application. On the basis of that review, DENR has completed a draft air quality permit.
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Draft Air Permit Public Notice (127.11kb)
September 11, 2008
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Notice of PSD pre-construction air quality permit application and draft permit and MACT approval.
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Screening Level Health Risk Assessment (1193.37kb)
April 23, 2008
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A report concerning an assessment of the potential carcinogenic health risk to South Dakotans in Union County from the Hazardous Air Pollutants (HAPs) that would be emitted from the Hyperion Energy Center. You will find that the results of the assessment show an estimated cancer risk below the US EPA’s standard for protection of residential populations.
This assessment was performed using the established methodology used by the US EPA for similar reviews of existing refineries in the United States. The assessment shows that the likelihood of any one individual contracting cancer due to inhalation of emissions from the Hyperion Energy Center is less than 1 in 1,000,000. This probability is reached by using a model that includes a theoretical exposure of 24 hours a day for 70 years. The estimated cancer risk is 3,000 times less than the existing cancer incidence rate in Union County as reported by the South Dakota Cancer Registry.
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Siouxland Economic Impact Study (207.65kb)
April 21, 2008
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The economic impact of the Hyperion Energy Center on the South Dakota and greater Siouxland economies by Stuefen Research, LLC.
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Siouxland Industrial Roundtable Presentation (1582.45kb)
April 3, 2008
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Presentation given by J. Louis "Corky" Frank on April 3rd, 2008.
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Rezoning PD Boundary Map As Adopted (364.06kb)
March 11, 2008
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The final PD boundary for rezoning at the Siouxland Site.
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PD Ordinance As Adopted in South Dakota (917.97kb)
March 11, 2008
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Planned Development Ordinance in its Final Adopted Format
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Summary of the County's Changes to the PD Application (56kb)
March 11, 2008
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Changes made to the Planned Development application by Union County
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Planning and Zoning Binder (10605kb)
January 10, 2008
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Documents submitted at Planning and Zoning meeting.
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Initial Rezoning PD Boundary with Transition Zone (Dec. 2007) (214kb)
January 6, 2008
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The initially proposed PD boundary with the transition zone for rezoning at the Siouxland Site.
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Air Permit Application (11732kb)
December 10, 2007
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Hyperion files with SD DENR an air permit application.
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Open House Station Summaries (382kb)
December 10, 2007
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During the open house presentations to the public in South Dakota, Hyperion provided summaries of each station.
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Rezoning PD Application (10213kb)
December 6, 2007
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Hyperion has filed an application to rezone land in Union County.
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