Utah and local politicians say the monument, created under executive authority granted to presidents by the 1906 Antiquities Act, will needlessly expand federal oversight and limit public access and use of the remote lands west of Blanding.
President Donald Trump has directed Zinke — who is expected to visit Utah next week — to review large monument designations made by Presidents Bill Clinton, George W. Bush and Obama and report back within 120 days on whether they should be adjusted or even revoked as misapplications of the Antiquities Act.
"We wanted him to have that information as he does his 45-day evaluation," said Bruce Adams, a Monticello rancher and the longest-serving member of the county commission. "He seemed like he was listening intently and had some feedback to give us."
Adams said the presentation used maps to outline existing government protections for the land and its resources.
"There are 11 layers of protections," Adams said. "With a monument, it is just another layer on top of all these protective areas."
Zinke is to complete the Bears Ears review by June 10 and the larger review will include the 1.9-million acre Grand Staircase Escalante National Monument, designated in 1996.
Tuesday's meeting raised eye brows because it amounted to a closed-door meeting of San Juan's three-member commission, and Zinke has yet to reply to requests for meetings with tribal leaders who proposed the monument.
"At [Zinke's] confirmation, he said 'tribal sovereignty should mean something.' The tribes took that as a good sign," said Natasha Hale, lead staffer for the Bears Ears Inter-Tribal Coalition.
"Any new administration needs time to organize themselves, but then Zinke sets up meetings with the Utah delegation and the San Juan commission," Hale said. "What he said doesn't mean a lot."
Obama designated the 1.3 million acres surrounding Cedar and Mancos mesas, Comb Ridge, Bears Ears buttes and Indian Creek at the request of the coalition's five sovereign tribes — Navajo, Ute, Ute Mountain Ute, Zuni and Hopi.
"Our Tribes are the original inhabitants of the West long before the United States was a nation, and we do not view Bears Ears National Monument as an abuse," the coalition said in an April 26 letter to Zinke.
"To the contrary, it is a fulfillment of both our duty to preserve our cultures and our ancestral lands, and its designation was the result of a long, deliberative process with your predecessor [Sally Jewell] to further our self-determination," the letter said.
Coalition leaders said they still hope to meet with Zinke when he visits Utah next week.
All three San Juan commissioners were at the Zinke meeting at the Interior Department's Washington, D.C., headquarters, but no advance public notice for the meeting was provided — in apparent violation of Utah's opening meeting laws.
The commission posted that its regular Tuesday meeting would not be held this week "due to other county obligations."
Adams said he does not believe that the county commission is required to post notice meetings where decisions are not being discussed, as was the case with the Zinke meeting.