CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS > SUBPART JJ—North Dakota (§52.1820 to §52.1837) > 52.1831—Visibility protection.

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.

Code of Federal Regulations

[54 FR 41098, Oct. 5, 1989]