Policy and Guidance Memos for Modeling

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Active Policy and Guidance Memos from 2008

• Refining Predicted Modeling Exceedances - October 2008
• Point Source Data Base (PSDB) - October 2008

Active Policy and Guidance Memos from 2007

• Preferred Air Dispersion Models for Refined Modeling - October 2007

Active Policy and Guidance Memos from 2006

• Outdoor Blasting and Coating Adjustment Factor for Shrouds Memo - March 2006

Active Policy and Guidance Memos from 2004

• Technical Basis for Flare Parameters Memo - September 2004

Active Policy and Guidance Memos from 2002

• Air Dispersion Modeling for Dockside Marine Vessels and Related Activities - August 2002
• Modeling Adjustment Factor for Fugitive Emissions - March 2002

Active Policy and Guidance Memos from 1998

• Background Concentration Determination for Use in NAAQS Analyses Memo - September 1998
• Modeling Guidance for Exemption 106.512 - August 1998
• Modeling Request Guidance Memo - September 1998
• Screening Background Concentration Memo - September 1998

Active Policy and Guidance Memos from 1997

• Procedure for Replacing Low Mixing Height Data in Meteorological Files - January, 1997
• Modeling Fugitive Emission as Pseudo-Point Sources Memo - July 1997
• Modeling Emissions for Tilted Stacks Memo - September 1997

Active Policy and Guidance Memos from 1996

• Anemometer Heights Memo - June 1996
• NAAQS Modeling Procedures for Lead - Background Document Memo - June 1996

Active Policy and Guidance Memos from 1995

• Meteorological Data for Prevention of Significant Deterioration Modeling Memo - February 1995

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