For the purposes of this chapter, the ambient air quality standards, definitions, reference conditions, and methods of measurement are those specified in 40 CFR Parts 50, 51, 53, and 58, as amended.

Authority: Environment Article, §§1-101, 1-404, 2-101—2-103, 2-301—2-303, 10-102, and 10-103, Annotated Code of Maryland

Effective date: July 18, 1980 (7:12 Md. R. 1148)

Regulation .01 amended effective January 18, 1982 (8:25 Md. R. 1995)

Regulation .01B amended effective July 2, 1985 (12:11 Md. R. 1050)

For the history of this subtitle before June 18, 1980, see the Administrative History of COMAR 26.11.01.

Chapter recodified from COMAR 10.18.04 to COMAR 26.11.04

Regulation .01C amended effective February 17, 1992 (19:3 Md. R. 306)

Regulation .01 amended, Regulation .02 adopted, and Regulations .01—.07 under COMAR 26.11.03 recodified as Regulations .03—.09 under COMAR 26.11.04 Ambient Air Quality Standards effective May 8, 1995 (22:9 Md. R. 648)

The following is a history of Regulations .03—.09 before May 8, 1995, as codified under COMAR 26.11.03.01—.07:

Regulation .01 amended effective October 14, 1985 (12:18 Md. R. 1766)

Regulation .04 amended effective January 5, 1988 (14:24 Md. R. 2555)

Regulation .08 repealed effective October 14, 1985 (12:18 Md. R. 1766)

Chapter recodified from COMAR 10.18.03 to COMAR 26.11.03

Regulation .01 amended effective March 21, 1989 (16:3 Md. R. 347)

Regulation .02 amended effective March 21, 1989 (16:3 Md. R. 347)

Regulation .03 amended effective February 28, 2005 (32:4 Md. R. 411)

Regulation .04 amended effective February 28, 2005 (32:4 Md. R. 411)

Regulation .05 amended effective February 28, 2005 (32:4 Md. R. 411)

Regulation .07 amended effective February 28, 2005 (32:4 Md. R. 411)

Regulation .08 amended effective February 28, 2005 (32:4 Md. R. 411)

Chapter revised effective September 17, 2012 (39:18 Md. R. 1197)