United States Office of Air Quality EPA-454/R-95-006

Environmental Protection Planning and Standards December 1995

Agency Research Triangle Park, NC 27711

AIR

INTERAGENCY WORKGROUP

ON AIR QUALITY MODELING (IWAQM):

ASSESSMENT OF PHASE 1

RECOMMENDATIONS REGARDING THE

USE OF MESOPUFF II

INTERAGENCY WORKGROUIP ON AIR QUALITY MODELING (IWAQM):

ASSESSMENT OF PHASE 1 RECOMMENDATIONS

REGARDING THE USE OF MESOPUFF II

Office of Air Quality Planning and Standards

Technical Support Division (MD-14)

Research Triangle Park, North Carolina 27711

National Park Service

Air Quality Division

Denver, Colorado 80225

USDA Forest Service

Office of Air Quality

Fort Collins, Colorado 80526

U.S. Fish and Wildlife Service

Air Quality Branch

Denver, Colorado 80225

April 1995

PREFACE

A memorandum of understanding (MOU) was developed by interested Federal agencies, viz.

the Environmental Protection Agency, the U.S. Forest Service, the National Park Service, and

the U.S. Fish and Wildlife Service, to provide a focus for development of technically sound,

regional air quality models for regulatory assessments of pollutant source impacts on Federal

Class I areas. Based on this MOU the Interagency Workgroup on Air Quality Modeling

(IWAQM) was formed. Although no States are signatories, their participation in IWAQM

functions is explicitly noted in the MOU.

The Guideline on Air Quality Models (Code of Federal Regulations, Appendix W to Part 51)

suggests MESOPUFF II may be considered on a case-by-case basis for use for assessing long

range transport impacts. In the interim recommendations (EPA, 1993), IWAQM outlined a

manner in which MESOPUFF II might be applied in such instances. This report documents

results from a case study to apply the MESOPUFF II air quality modeling system following

the IWAQM interim recommendations.

 

 

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