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New Source Review (NSR) Permitting

Relevant Guidance Index

Users should note that EPA has established a distinct database containing EPA Guidance pursuant to Executive Order (EO) 13891, titled "Promoting the Rule of Law Through Improved Agency Guidance Documents." Some of the documents included in this NSR Policy Guidance Database are also included in EPA’s EO 13891 database
EPA intends to continue maintaining and populating this NSR Policy Guidance Database as the Agency has in the past. This database contains documents that meet the definition of “guidance” in paragraph 2(b) of EO 13891 and documents that are not covered by that definition, such as adjudications and statements directed to particular parties about circumstance-specific questions. This NSR Policy Guidance Database also includes guidance that is no longer active, but that may be referenced to establish historical facts. More information on the scope of the documents organized in the topic index can be found here.

New Source Review Applicability 

Stationary Source
 Major Stationary Source
Major Modifications

Best Available Control Technology (BACT) 

Ambient Air Modeling & Monitoring 

Class I Areas 

Nonattainment New Source Review 

Post-Issuance Permit Activities 

Implementation of New Source Review (NSR) Program