County Supervisor Joe Maruca decided to delay for one week his resolution opposing future power plants across the border in Mexico.
Maruca said he wanted to re-word the resolution to include condemning the natural gas pipeline serving the power plants.
"Any additional pollution on the border is too much. No matter how clean you make them, they will still dirty the air," Maruca said, referring to the power plants.
The board plans to take action on closures at the Imperial Sand Dunes.
In October, the U.S. Bureau of Land Management ordered some driveable washes closed to vehicles and 25,600 acres east of the dunes closed to camping as part of a settlement with environmental groups.
"It is our intention to be involved in the appeal process," Supervisor Gary Wyatt said.
The latest closures brings the total open land in the 150,000-acre sand dunes to about 50 percent, according to BLM field manager Greg Thomsen.