Related Information

PSD Guidance for Permit Applicants - Although superceded by the FLAG Guidance, this document describes the Federal Land Manager's role and responsibility, and provides general information regarding the permit review process.

EPA Guideline On Air Quality Models - This explains the regulatory requirements for using air quality models and specifically the CALPUFF long-range transport model. Get the PDF version.

Educational Material on Visibility Science and Regulations - This site contains visibility information and various tools for looking at visibility data.

National Acid Deposition Program

Desired Permit Review Process for Projects That May Impact Class I Areas - This document lists the steps the NPS and FWS recommend that applicants and permitting authorities follow regarding FLM involvement in the permit review process.

Class I Area Boundaries - This site provides maps of Class I area boundaries.

Class I Area Receptors - This site provides suggested receptor grids for Class I area impact modeling.

Final correspondence search regarding permit reviews - This site provides a document search regarding the NPS and FWS review of permit applications.