He added that the project will be a "strong example of environmental performance" and praised the "strong leadership" of Utah Gov. Gary Herbert and other decision-makers.
But John Weisheit, director of the environmental advocacy group Living Rivers, called the decision "arbitrary." His Moab-based group, which has fought the project not only before the oil and gas board but also before the Utah Water Quality Board, contends the strip mine is a threat to the air and the water, especially the nearby White, Green and Colorado rivers.
"We have another avenue [to fight the mine] and that's the appeals court," he said, "and that's where we'll go."
Todd said his company has been working on the project since 2005, doing tests and exploration on a 5,900-acre lease site that is thought to hold as much as 190 million barrels of oil. It will use a citrus-based chemical called d-limonene.
But recent approvals, in October by the Water Quality Board and on Friday by the oil and gas board, apply only to a smaller project site. When production gets under way next year, the initial 200-acre project area is expected to generate around 2,000 barrels a day for a total of 10 million barrels.
The main question for both state panels was whether the mine endangers the water an important question in the nation's second-driest state.
The oil and gas board earlier gave preliminary approval to the project pending a decision by water quality regulators on whether the project needed groundwater-pollution permit. In its October decision, the water board determined there is no groundwater to pollute.
That left the oil and gas board with a final decision that members deliberated following a December hearing.
John Andrews, associate director and counsel for the Utah School and Institutional Trust Lands Administration, which owns the land, was pleased with the decision for its potential value to the state's schoolchildren.
"You would be looking at between $1 million and $3 million a year to the trust," he said of the project's first phase.
Environmental activists have protested and held teach-ins for much of the past year to attract negative public attention to the project.