{"data":{"id":"us/40-cfr-52.781","jurisdiction":"us","citation":"40 CFR 52.781","heading":"Rules and regulations.","body":"(a) [Reserved]\n(b) A part of the second sentence in section 3, APC-17, which states “Where there is a violation or potential violation of ambient air quality standards, existing emission sources or any existing air pollution control equipment shall comply with th\n(c)-(d) [Reserved]\n(e) Section 2(d) of APC-20, Fugitive Dust Emissions, is disapproved because it is unenforceable within the terms of the regulation.\n(f) Subsections 3(b)(3) and 3(b)(5) of APC-2 (May 18, 1977) are disapproved because they are unenforceable within the terms of the regulation.\n(g) Disapproval. EPA is disapproving 326 IAC 25-2-1, 326 IAC 25-2-3 and 326 IAC 25-2-4 as revisions to the Indiana SIP.\n(h) Disapproval. EPA is disapproving the December 10, 2009 submittal of 326 IAC 7-4-14 as a revision to the Indiana SIP.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart P—Indiana"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"8cb6daae5a2f67e71e013671a8d8915e36db721536eaa63df15086abfd7eea36","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.780","next":"us/40-cfr-52.782"},"notice":"GroundRules: Original legal text. Not legal advice."}