5 Colo. Code Regs. § 1001-5-D-VIII

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Current through Register Vol. 48, No. 1, January 10, 2025

Section 5 CCR 1001-5-D-VIII - Area Classifications

VIII.A. The following areas in Colorado shall be Class I areas and may not be redesignated:

VIII.A.1. National Parks

VIII.A.1.a. Rocky Mountain

VIII.A.1.b. Mesa Verde

VIII.A.2. National Wilderness Areas

VIII.A.2.a. Black Canyon of the Gunnison

VIII.A.2.b. Eagle's Nest

VIII.A.2.c. Flattops

VIII.A.2.d. Great Sand Dunes

VIII.A.2.e. La Garita

VIII.A.2.f. Maroon Bells - Snowmass

VIII.A.2.g. Mount Zirkel

VIII.A.2.h. Rawah

VIII.A.2.i. Weminuche

VIII.A.2.j. West Elk

VIII.B. All other areas of Colorado, unless otherwise specified by Act of Congress or the Colorado legislature, or the Commission pursuant to Section IX. are designated Class II; provided, however that in the following areas as they existed on August 7, 1977 (maps available from the Division), the increase allowed in sulfur dioxide concentrations over the baseline concentration shall be the same as the increase established by Section 163(b) of the Federal Act for Class I areas, except that such allowable increases may not be allowed if a Federal Land Manager should make an adverse impact determination under Section XIII.C. with which the Division concurs and except that such allowable increases, may be exceeded by compliance with the provisions of Sections XIII.D., XIII.E., or XIII.F.:

VIII.B.1. National Monuments

VIII.B.1.a. Florissant Fossil Beds

VIII.B.1.b. Colorado

VIII.B.1.c. Dinosaur

VIII.B.1.d. Great Sand Dunes (those portions not included as National Wilderness Areas in Section VIII.A.2.)

VIII.B.2. Forest Service Primitive Areas

VIII.B.2.a. Uncompahgre Mountain

VIII.B.2.b. Wilson Mountain

VIII.B.3. Lands administered by the Federal Bureau of Land Management in the Gunnison Gorge Recreation Area as of October 27, 1977. All areas designated Class II under this section may be redesignated as provided in Section IX. of this part.

VIII.B.4. National Parks

Black Canyon of the Gunnison (those portions not included as National Wilderness Areas in Section VIII.A.2.)

VIII.C. The following areas may be redesignated only as Class I or II.

VIII.C.1. An area that exceeds ten thousand acres in size and is a national monument, a national primitive area, a national preserve, a national recreational area, a national wild and scenic river, a national wildlife refuge, a national lakeshore; and

VIII.C.2. A national park or national wilderness area established after August 7, 1977, that exceeds ten thousand acres in size.

VIII.D. The Commission recognizes out of state Class I areas that have been listed in the Federal Register (44 Fed. Reg. 69124). Emissions from sources in Colorado shall not violate any standard in these areas.

5 CCR 1001-5-D-VIII

37 CR 18, September 25, 2014, effective 10/15/2014

37 CR 24, December 25, 2014, effective 1/14/2015

39 CR 04, February 25, 2016, effective 3/16/2016

39 CR 21, November 10, 2016, effective 11/30/2016

41 CR 21, November 10, 2018, effective 11/30/2018

43 CR 02, January 25, 2020, effective 2/14/2020

44 CR 02, January 25, 2021, effective 2/14/2021

46 CR 02, January 25, 2022, effective 2/14/2023

46 CR 12, June 25, 2023, effective 7/15/2023

47 CR 06, March 25, 2024, effective 4/15/2024

47 CR 12, June 25, 2024, effective 7/15/2024