Arkansas ? Some of the thousands of mobile homes stored for possible use by disaster victims have formaldehyde levels rivaling those of housing already deemed unsafe for victims of 2005 hurricanes on the Gulf Coast, test results show.

The Federal Emergency Management Agency test results, obtained Tuesday by The Associated Press, show that three of 32 mobile homes tested for use in Arkansas had levels high enough to put possible residents at an increased risk of cancer and respiratory illnesses. Above half the homes tested had levels higher than the average home.

One offered to Tennessee tested at levels 16 times higher than the average home.

The more than 7,500 mobile homes are being stored at Hope Municipal Airport. FEMA had a contractor test some of them to see whether they were suitable for storm victims in Arkansas and Tennessee, which were hit by deadly tornadoes on Feb. 5.