Subpart R Subpart R https://www.tceq.texas.gov/downloads/permitting/air-rules/federal/40-cfr-60/subpart-r https://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png Subpart R Subpart R Subpart R - Navigation Flowchart Subpart R - Navigation Flowchart Subpart R - Relationship Entry Screen Table Subpart R - Relationship Entry Screen Table Subpart R - Requirements Reference Tables Subpart R - Requirements Reference Tables