40 CFR § 52.2077 - Identification of plan—conditional approvals and disapprovals.

---
identifier: "/us/cfr/t40/s52.2077"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.2077 - Identification of plan—conditional approvals and disapprovals."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.2077"
section_name: "Identification of plan—conditional approvals and disapprovals."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "52"
part_name: "APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
cfr_part: "52"
---


# 52.2077 Identification of plan—conditional approvals and disapprovals.

(a) [Reserved]

(b) *Disapprovals.* (1) 1997 Ozone NAAQS: The 110(a)(2) infrastructure SIP submitted on December 14, 2007, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(2) 2008 Ozone NAAQS: The 110(a)(2) infrastructure SIP submitted on January 2, 2013, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(3) 2008 Lead NAAQS: The 110(a)(2) infrastructure SIP submitted on October 26, 2011, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(4) 2010 Nitrogen Dioxide NAAQS: The 110(a)(2) infrastructure SIP submitted on January 2, 2013, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(5) 1997 PM<sub>2.5</sub> NAAQS: The 110(a)(2) infrastructure SIP submitted on September 10, 2008, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(6) 2006 PM<sub>2.5</sub> NAAQS: The 110(a)(2) infrastructure SIP submitted on November 6, 2009, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at 40 CFR 52.2080.

(7) 2012 PM<sub>2.5</sub> NAAQS: The 110(a)(2) infrastructure SIP submitted on December 6, 2017, is disapproved for Clean Air Act element 110(a)(2)(H). A Federal Implantation Plan is already in place at § 52.2080.

[81 FR 23179, Apr. 20, 2016; 84 FR 52366, Oct. 2, 2019; 87 FR 32320, May 31, 2022]