UNITED STATES

DEPARTMENT OF THE INTERIOR

This mining plan approval document is issued by the United States of America to: 

Colowyo Coal Company L.P. 

5731 Highway 13 

Meeker, CO 81641 

for a mining plan modification to mine within Federal Coal Leases COC-0123475 01 & COC68590 at the Colowyo Coal Mine. This mining plan approval supplements all previous mining 

plan approvals for the Colowyo Coal Mine. The approval is subject to the following conditions. 

Colowyo Coal Company, L.P. is hereinafter referred to as the operator.

l. Statutes and Regulations. This mining plan approval is issued pursuant to Federal Coal 

Leases COC-0123475 01 & COC-68590; the Mineral Leasing Act of 1920, as amended 

(30 U.S.C. 181 et seq.); and in the case of acquired lands, the Mineral Leasing Act for 

Acquired Lands of 1947, as amended (30 U.S.C. 351 et seq.). This mining plan approval 

is subject to all applicable laws and regulations of the Secretary of the Interior which are 

now or hereafter in force; and all such laws and regulations are made a part hereof. The 

operator shall comply with the provisions of the Federal Water Pollution and Control Act 

(33 U.S.C. 1251 et seq.), the Clean Air Act (42 U.S.C. 7401 et seq.), and other applicable 

Federal laws.

2. This document approves the mining plan modification for Federal Coal Leases COC0123475 01 & COC-68590 at the Colowyo Coal Mine and authorizes coal development 

or mining operations on the Federal leases within the area of mining plan approval. This 

authorization reaffirms the approved mining plan area located within Federal coal lands.

COC-0123475 01 

Township 4 North (T4N), Range 93 West (R93W), 6th Prime Meridian (P.M.) 

Section 29, SW1⁄4; 

Section 30, Lots 1 through 4, E1⁄2W1⁄2SE1⁄4; 

T4N, R94W, 6th P.M. 

Section 24, Lot 9, E1⁄2SW1⁄4, and SW1⁄4SW1⁄4; 

Section 25, Lots 1, 3, 5, 7, 13, and N1⁄2; 

Section 26, Lot 3; 

Section 35, Lots 2, 3, 6, W1⁄2E1⁄2, W1⁄2, and SE1⁄4SE1⁄4; 

Section 36, Lots 1, 10, 11, 14, 16, 18, and S1⁄2S1⁄2. 

COC-68590 

T3N, R94W, 6th P.M. 

Section 1, Lots 7, 8, SW1⁄4NW1⁄4, N1⁄2SE1⁄4NW1⁄4, SW1⁄4SE1⁄4NW1⁄4, 

N1⁄2NW1⁄4SW1⁄4, and SW1⁄4NW1⁄4SW1⁄4; 

Section 2, Lots 5 through 8 inclusive, S1⁄2N1⁄2, SW1⁄4, N1⁄2SE1⁄4, SW1⁄4SE1⁄4, 

N1⁄2SE1⁄4SE1⁄4, and SW1⁄4SE1⁄4SE1⁄4; 
Mining Plan Modification for Federal Leases 

COC-0123475 01 & COC-68590 at the Colowyo Coal Mine Page 2 of 2

Section 3, Lot 5, E1⁄2W1⁄2NE1⁄4, SE1⁄4NE1⁄4, and E1⁄2SE1⁄4;

Section 10, NE1⁄4NE1⁄4; 

Section 11, NW1⁄4NE1⁄4NE1⁄4, N1⁄2NW1⁄4NE1⁄4, SW1⁄4NW1⁄4NE1⁄4, 

NW1⁄4SW1⁄4NE1⁄4, N1⁄2NW1⁄4, NE1⁄4SW1⁄4NW1⁄4, and 

N1⁄2SE1⁄4NW1⁄4. 

 T4N, R94W, 6th P.M. 

Section 34, S1⁄2NE1⁄4NE1⁄4, SE1⁄4NE1⁄2, E1⁄2W1⁄2SE1⁄4, and E1⁄2SE1⁄4. 

These lands encompass approximately 3,517 Federal coal acres and are shown on the 

mining plan approval area map attached hereto as Attachment A.

3. The operator shall conduct coal development or mining operations only as described in 

the complete permit application approved by the Colorado Division of Reclamation, 

Mining and Safety, except as otherwise directed in the conditions of this mining plan 

approval. 

4. The operator shall comply with the terms and conditions of the leases, this mining plan 

approval, and the requirements of the Colorado Permit No. C-1981-019 issued under the 

Colorado State program, approved pursuant to the Surface Mining Control and 

Reclamation Act of 1977 (30 U.S.C. 1201 et seq.).

5. This mining plan approval shall be binding on any person conducting coal development 

or mining operations under the approved mining plan and shall remain in effect until 

superseded, canceled, or withdrawn.

6. If, during mining operations, unidentified prehistoric or historic resources are discovered, 

the operator shall ensure that the resources are not disturbed and shall notify the Colorado 

Division of Reclamation, Mining and Safety and the Office of Surface Mining 

Reclamation and Enforcement pursuant to section 110(a)(2)(E) of the National Historic 

Preservation Act. The operator shall take such actions as are required by the Colorado 

Division of Reclamation, Mining and Safety in coordination with the Office of Surface 

Mining Reclamation and Enforcement. 

7. The Secretary retains jurisdiction to modify or cancel this approval, as required, on the 

basis of further consultation with the U.S. Fish and Wildlife Service pursuant to section 7 

of the Endangered Species Act, as amended, 16 U.S.C. 1531 et seq. 

Attachment