V.A.6.b.

Code of Colorado Regulations · Regulation Number 26

CONTROL OF EMISSIONS FROM ENGINES AND MAJOR STATIONARY SOURCES 5 CCR 1001-30

This regulation controls emissions from engines and major stationary sources in Colorado. It applies to combustion equipment and major sources subject to Reasonably Available Control Technology (RACT) requirements. The regulation includes general provisions, specific control requirements for combustion equipment and major sources, appendices defining Colorado's ozone nonattainment and attainment-maintenance areas, and statements of basis and authority.

I.A.1.

The 8-Hour Ozone Control Area includes all of Adams, Arapahoe, Boulder, Douglas, and Jefferson Counties; the Cities and Counties of Denver and Broomfield; the portion of Larimer County south of a specified line; and the portion of Weld County south of a specified latitude line. The Larimer County line is defined by latitude and longitude coordinates, while the Weld County line follows a single latitude, 40 degrees, 42 minutes, 47.1 seconds north, marking the northern boundary of the area.

I.A.1.a.

This defines the portion of Larimer County (including part of Rocky Mountain National Park) that falls within the 8-Hour Ozone Control Area: it is the part of the county south of a boundary line that runs from the Weld County line westward along 40°42'47.1"N latitude, then south along 105°29'40.0"W longitude, then west again along 40°33'17.4"N latitude to the Grand County line.

I.A.1.b.

This defines the southern boundary of the 8-Hour Ozone Control Area within Weld County: it includes only the part of Weld County south of a line running due west along latitude 40°42'47.1"N from the Logan County line to the Larimer County line.

I.A.2.

This defines the Denver 1-Hour Ozone Attainment/Maintenance Area as Jefferson County, Douglas County, the Cities and Counties of Denver and Broomfield, Boulder County (excluding Rocky Mountain National Park), Adams County west of Kiowa Creek, and Arapahoe County west of Kiowa Creek.