eCFR Reference Browser

---

title: "40 CFR §65.10"

source: "https://www.ecfr.gov/current/title-40/section-65.10"

title_number: "40"

volume_number: "17"

chapter_number: "Unknown"

subchapter_code: "C"

subchapter_subject: "AIR PROGRAMS (CONTINUED)"

part_code: "65"

part_subject: "CONSOLIDATED FEDERAL AIR RULE"

subpart_code: "A"

subpart_subject: "General Provisions"

section_number: "65.10"

section_subject: "State authority."

cfr_reference: "40 CFR 65.10"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Parts 64 to 71"

revised_date: "Revised as of July 1, 2019"

publication_date: "As of July 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

(a)The provisions of this part shall not be construed in any manner to preclude any State or political subdivision thereof from adopting and enforcing any emission standard or limitation applicable to a regulated source, provided that such standard, limitation, prohibition, or other regulation is not less stringent than the standard applicable to such a regulated source.

(b)The provisions of this part shall not be construed in any manner to preclude any State or political subdivision thereof from requiring the owner or operator of a regulated source to obtain permits, licenses, or approvals prior to initiating construction, modification, or operation of such a regulated source.

§65.10 - State authority.