40 CFR § 52.1831 - Visibility protection.

---
identifier: "/us/cfr/t40/s52.1831"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.1831 - Visibility protection."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.1831"
section_name: "Visibility protection."
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"
---


# 52.1831 Visibility protection.

A revision to the SIP was submitted by the Governor on April 18, 1989, for visibility general plan requirements and long-term strategies.

[54 FR 41098, Oct. 5, 1989]