Local conservation groups and the Coconino County Board of Supervisors have found what they call "serious" flaws in a federal analysis weighing the risks and benefits of uranium mining here.

The Coconino County Board of Supervisors, Sierra Club, Center for Biological Diversity, Grand Canyon Wildlands Council and Grand Canyon Trust are all questioning estimates that mining in northern Arizona could employ hundreds directly and thousands indirectly -- saying those figures appear greatly inflated.

These groups all support putting federal land bordering the Grand Canyon off-limits to new uranium mines for 20 years.

It's a scenario that would allow perhaps 11 existing mines to open instead of 30 and end new exploration rather than permitting more than 700 sites to be explored.

These questions have growing significance this summer because a 2-year-old moratorium on new uranium mining issued by Interior Secretary Ken Salazar expires in mid-July, opening the door for mining exploration to resume across about 1 million acres.

An Interior spokeswoman said she did not know when Salazar might make a decision on the issue.


"The problem with this area is that there are more unknowns than knowns -- especially north of the canyon, there is a huge area where the science has not been done to determine how groundwater is moving," said Alicyn Gitlin, of the Sierra Club.

She raised the example of the drinking water for the Grand Canyon, which is supplied by a spring on the northern side of the canyon.

When snow melts on the North Rim most years, the water quality in the springs gets cloudy, raising an evident connection between events on the surface and water quality.

Estimates of how much uranium ore could come from each mine appear to be overstated by a factor of four in the long analysis (about the size of three Flagstaff phone books), said one consultant.

Projections on how much the ore could be worth into the future appear volatile, and determining who benefits from the industry is problematic, economic development consultant Richard Merritt wrote to the Interior Department on behalf of the Grand Canyon Trust.

"... inaccuracies in modeling the economic impact of the withdrawal ... cause us to seriously question the veracity of the final conclusions ..." Merritt wrote.

Federal agencies didn't adequately weigh the risks of lasting aquifer contamination related to uranium mining, the four conservation groups wrote.

"(The analysis) avoids discussion of the monumental tasks and hundreds of millions or billions of dollars required to clean up deep aquifer contamination, assuming it is even possible. Commenting organizations raised this issue in scoping. Neither the federal government nor industry can guarantee that uranium mining would not deplete or contaminate aquifers," they stated.

They raised other uranium-mining-related contamination in the Southwest, and drew a comparison to the Gulf oil spill.

"In their permitting of the BP Deepwater Horizon oil drilling, Interior Department agencies repeatedly dismissed the possibility of a deepwater oil spill and assumed that response resources and systems were adequate to prevent significant environmental harm in the event that a spill did occur," they wrote.


The Coconino County Board of Supervisors unanimously signed a letter in April asking that a lot of federal land in Coconino County be put off-limits to uranium mining, raising concerns about the impacts to tourism and questions about cleanup in case of an ore truck overturning.

The county cited "hot spots" of radioactivity at former mines, as uncovered in tests by the U.S. Geological Survey a few years ago, and a mine on standby for more than 20 years that had not been closed.

The board contended that uranium jobs were possibly counted multiple times, but that tourism revenues might be undercounted, and raised complaints that monitoring for radioactive materials along haul routes into Fredonia, Flagstaff, Page and Cameron wouldn't be adequate.

The agency noted that it might feel somewhat differently about the risks if there was a guarantee that the uranium mined from the Colorado Plateau were to end up supplying power in the United States, but there is no such guarantee.

"There is entirely too much risk, too many unknowns and too many identified impacts to justify threatening one of the most important U.S. landmarks and one of the most world-renowned national parks to justify the relatively small economic benefit associated with mining of uranium in the Grand Canyon region," the supervisors stated.

Cyndy Cole can be reached at 913-8607 or at ccole@azdailysun.com.