Skip to Content

We invite you to try out our new beta eCFR site at We’ve made big changes to make the eCFR easier to use. Be sure to leave feedback using the 'Feedback' button on the bottom right of each page!


Notice of Availability of the Draft Resource Management Plan Amendment and Preliminary Environmental Assessment for Evaluation of Potential Areas of Critical Environmental Concern Within the Tres Rios Field Office, Colorado

Document Details

Information about this document as published in the Federal Register.

Document Statistics
Document page views are updated periodically throughout the day and are cumulative counts for this document. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day.
Published Document

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Start Preamble Start Printed Page 5105


Bureau of Land Management, Interior.


Notice of availability.


In accordance with the National Environmental Policy Act of 1969, as amended, and the Federal Land Policy and Management Act of 1976, as amended, the Bureau of Land Management (BLM) has prepared a Draft Resource Management Plan (RMP) Amendment and Preliminary Environmental Assessment (EA) evaluating potential Areas of Critical Environmental Concern (ACEC) for the Tres Rios Field Office and by this Notice is announcing the opening of the comment period.


To ensure that comments will be considered, the BLM must receive written comments on the Draft RMP Amendment and Preliminary EA by April 22, 2019. The BLM will announce future meetings or hearings and any other public participation activities at least 15 days in advance through public notices, media releases, and/or mailings.


You may submit comments related to the Tres Rios Field Office ACEC RMP Amendment by any of the following methods:

Copies of the Tres Rios Field Office ACEC RMP Amendment are available in the Tres Rios Field Office at the above address.

Start Further Info


Keith Fox, Planning and Environmental Specialist; telephone (970) 882-6856; email Persons who use a telecommunication device for the deaf (TDD) may call the Federal Relay Service (FRS) at 1-800-877-8339 to contact the above individual during normal business hours. The FRS is available 24 hours a day, seven days a week, to leave a message or question with the above individual. You will receive a reply during normal business hours.

End Further Info End Preamble Start Supplemental Information


The BLM has prepared an RMP Amendment with an associated EA to evaluate areas nominated by the BLM and the public within the Tres Rios Field Office Planning Area and within the Silverton area of San Juan County, Colorado (now managed by the BLM Gunnison Field Office), for potential designation as ACECs. The Preliminary EA considers management alternatives for 17 potential ACECs and discloses the direct, indirect and cumulative impacts of management prescriptions included in each of the four alternatives. The following alternatives are considered in the EA:

  • Alternative A: No Action—continuation of existing management direction for ACECs;
  • Alternative B: No ACECs Designated—existing ACECs would not be carried forward and proposed areas would not be designated;
  • Alternative C: Agency Preferred—reduce the size of existing Anasazi Culture and Gypsum Valley ACECs, designate Mesa Verde Escarpment ACEC
  • Alternative D: Designate all Proposed ACECs

See the following for potential ACEC acreage by alternative and the associated Relevant and Important Values:

Potential ACECAlternative A (No Action) acreageAlternative C (Preferred) acreageAlternative D acreageRelevant and important values
Ancestral Puebloan (formerly named Anasazi Culture)1,002792792Cultural and Rare plants.
Cement Creek446Rare plants.
Cinnamon Pass562Rare plants.
Coyote Wash642Rare plants.
Disappointment Valley2,688Rare plants.
Dolores River Canyon—North6,019Scenic, cultural, rare plants, wildlife and geology.
Dolores River Canyon—South5,550Wildlife and rare plants.
Gypsum Valley13,1356,1706,170Rare plants.
Lake Como100Rare plants.
McIntyre Canyon2,968Rare plants.
Mesa Verde Entrance626Rare plants.
Mesa Verde Escarpment (this area was nominated during the public scoping period, and, therefore was not included in the Notice of Intent for the RMP Amendment)7,3737,373Cultural and rare plants.
Muleshoe Bench665Wildlife.
Silvey's Pocket707Rare plants.
Slick Rock3,427Wildlife and rare plants.
Snaggletooth23,825Wildlife, cultural and scenic.
Spring Creek Basin25,286Rare plants.

The following ACEC nominations were evaluated to determine if the relevance and importance criteria were met, but were not included in any alternative because they did not meet relevance or importance criteria:

  • Grassy Hills; for rare terrestrial plant community.
  • Navajo River; for scenic quality and fish and wildlife species.

The following management limitations are recommended for the proposed ACECs in the preferred alternative, alternative C:

  • Ancestral Puebloan—land use right of ways, utility corridors and road construction will avoid cultural resource sites by 100 meters; leasable mineral development will be restricted to No Surface Occupancy.
  • Gypsum Valley—no changes in management prescriptions from current management.
  • Mesa Verde Escarpment—utility right of ways prohibited, restrictions on recreation right of ways, facilities, road Start Printed Page 5106construction, and limiting travel to designated routes.

Through this Notice, the BLM is inviting the public to provide comments regarding the potential environmental impacts related to the management alternatives. All public comments will receive consideration prior to the BLM's decision regarding ACEC designation.

Please note that public comments and information submitted, including names, street addresses and email addresses of persons who submit comments will be available for public review and disclosure at the above address during regular business hours (8 a.m. to 4 p.m.), Monday through Friday, except holidays.

Before including your address, phone number, email address, or other personal identifying information in your comment, you should be aware that your entire comment—including your personal identifying information—may be made publicly available at any time. While you can ask us in your comment to withhold your personal identifying information from public review, we cannot guarantee that we will be able to do so.

Start Authority

Authority: 40 CFR 1506.6, 40 CFR 1506.10, 43 CFR 1610.2.

End Authority Start Signature

Jamie E. Connell,

BLM Colorado State Director.

End Signature End Supplemental Information

[FR Doc. 2019-02813 Filed 2-19-19; 8:45 am]