Buried on the Forest Service website is the notice:
“Official Opportunity to Comment on the Heber Wild Horse Territory EA”
“This solicitation serves as the last designated opportunity for public comment on this project.”
Heber Wild Horse Territory Plan
https://www.fs.usda.gov/project/?project=18916
You must go under Project Documents then click on the Analysis tab in order to find the environmental assessment (EA). There are many pdf files at the Analysis tab. The HWHT_DraftEA is what the public comment period is specifically for.
The HeberDraftEACoverLetter is the last pdf on the list. The cover letter gives the rules for writing in a public comment including the following:
Timeframe for submitting comments
Specific written comments (36 CFR §218.2) on the proposed project will be accepted for 30 calendar days following publication of the notice initiating this comment period in the White Mountain Independent, the newspaper of record. We anticipate the legal
notice to be published on March 23, 2021. However, the actual publication date in the newspaper of record is the exclusive means for calculating the comment period. Those wishing to comment should not rely upon dates or timeframe information provided by any other source. It is the responsibility of the sender to ensure timely receipt of any comments submitted. A timely submission will be determined as outlined in 36 CFR 218.25(a)(4). The regulations prohibit extending the length of the comment period (36 CFR 218.6 (d)).
How to submit comments
Comments including attachments may be submitted electronically to:
https://cara.ecosystem-management.org/Public/CommentInput...
The following formats are acceptable: .doc, .rtf., txt., .html or .pdf.