I.L.4.a.

Regulation 7

CONTROL OF EMISSIONS FROM OIL AND GAS EMISSIONS OPERATIONS 5 CCR 1001-9

Regulation 7 controls air emissions from oil and gas operations in Colorado. The regulation includes applicability and general provisions, requirements for oil and natural gas operations, and statements of basis and authority, along with an appendix covering Colorado's ozone nonattainment and attainment-maintenance areas, including a chronology of attainment status designations and maps.

I.A.1.a.

This provision applies to operators in the Denver 1-hour ozone attainment/maintenance area, any 1-hour ozone nonattainment area, the 8-hour Ozone Control Area, and northern Weld County. It establishes that all requirements of Regulation 7 apply within these geographic areas.

I.A.1.b.

This provision applies to any ozone nonattainment area in Colorado (areas designated nonattainment for either the 1-hour or 8-hour ozone standard). It states that all provisions of Regulation 7 apply to such areas unless otherwise specified in Section I.A.1.c. Maps and chronologies of Colorado's ozone nonattainment or attainment maintenance areas are provided in Appendix A of the regulation.

I.A.1.c.

This provision specifies that certain sections of Regulation 7 Part B (Sections II, III, IV, V, VI except VI.E., VII and VIII) apply statewide. Sections II through VIII and any other sections marked (State Only) are not federally enforceable, unless otherwise identified.

II.A.1.

The 8-Hour Ozone Control Area includes all of Adams, Arapahoe, Boulder, Douglas, Jefferson, Denver, and Broomfield counties, plus the southern portion of Larimer County (south of a line that starts at 40°42'47.1" north latitude on the Larimer-Weld boundary, runs west to 105°29'40.0" west longitude, south to 40°33'17.4" north latitude, then west to the Grand County boundary) and the southern portion of Weld County (below a line at 40°42'47.1" north latitude). The exact boundaries for the Larimer and Weld portions are defined by specific latitude and longitude coordinates.