40 CFR § 52.241 - Inspection and maintenance program.

---
identifier: "/us/cfr/t40/s52.241"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.241 - Inspection and maintenance program."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.241"
section_name: "Inspection and maintenance program."
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: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
cfr_part: "52"
---


# 52.241 Inspection and maintenance program.

(a) [Reserved]

(b) *Approval.* On June 5, 2009, the California Air Resources Board submitted a revision to the California Motor Vehicle Inspection and Maintenance Program (2009 I/M Revision) to satisfy the requirements for basic and enhanced motor vehicle inspection and maintenance (I/M) in applicable ozone nonattainment areas. On October 28, 2009, the California Air Resources Board amended the 2009 I/M Revision to include revised enhanced performance program evaluations for six nonattainment areas. Approved elements of the 2009 I/M Revision, as amended on October 28, 2009, include a discussion of each of the required design elements of the I/M program; description of the current geographic coverage of the program; I/M-related statutes and regulations; enhanced I/M performance standard evaluations for the urbanized areas within six California ozone nonattainment areas (South Coast Air Basin, San Joaquin Valley, Sacramento Metro, Coachella Valley, Ventura County, and Western Mojave Desert); basic I/M performance standard evaluation for the urbanized area within the San Francisco Bay Area ozone nonattainment area; and emission analyzer specifications and test procedures, including BAR-97 specifications. The 2009 I/M Revision, as amended on October 28, 2009, meets the requirements of sections 182(a)(2)(B) and 182(c)(3) of the Clean Air Act, as amended in 1990, and 40 CFR part 51, subpart S and is approved as a revision to the California State Implementation Plan.

[75 FR 38026, July 1, 2010]