
Regional Actual Emissions Comparison
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The HEC's combined actual emissions will be significantly lower than existing regional power plants

Includes NOx, SO2, PM-10 and VOCs
Normalized Refinery & IGCC Power Plant Emissions
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The refinery normalized emissions will be 80% lower than the average operating refinery in California
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The IGCC power plant normalized emissions will be approximately 1/30th of the emissions of George Neal power plant in Port Neal, Iowa and 1/60th of the existing Big Stone Power Plant near Milbank, South Dakota

Includes NOx, SO2, PM-10 and VOCs. Emissions are normalized according to capacity. Refinery emissions are normalized to a crude distillation capacity of 400,000 barrels per day and power plant emissions are normalized to a heat input capacity of 9,625 million Btu per hour. Normalization corrects for differences due to size and better reflects performance of air emissions control technologies.
CO2
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The IGCC is designed to be Carbon Capture Ready for over 90% of the carbon dioxide from gasification
- Canadian crude will be refined somewhere in the world and it should be at a facility that is carbon capture ready and will meet stringent air emissions and water quality standards. North American oil should not be refined in countries with low or non-existent environmental standards and irresponsible CO2 foresight
Air Permit
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The HEC will require an air permit prior to construction which is implemented by the SD DENR and oversighted by the EPA. Public participation, including a public hearing, is part of the process. Details will be posted as they become available.
- Hyperion has filed its PSD Air Permit Application as of December 20th, 2007 with SD DENR. To view the application online, please click here (requires Adobe Acrobat Reader) or visit the files section to browse all available online documents related to the HEC.
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Hyperion has filed a Screening-Level Health Risk Assessment as of April 23rd, 2008 with SD DENR. To view the report online, please click here.


