This document may be of assistance in applying the New Source Review (NSR) air permitting regulations including the Prevention of Significant Deterioration (PSD) requirements. This document is part of the NSR Policy and Guidance Database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

• Indiana Air Pollution Control Board Approves a Modification on a PSD Permit for General Motors in which Two Coal-Fired Boilers are Forgiven a SO2 Control Requirement (PDF)(3 pp, 19 K)
  This document is part of the NSR Policy and Guidance Database.