The state's Health Council voted in favour of the rules Monday, the Associated Press reported.
The
 current rules allow up to five picocuries of radiation per gram. The 
new rules, passed on Monday by the State Health Council, which could go 
into effect by January, allow up to 50 picocuries.
According to 
the AP, one official said the five-picocurie limit is low enough to be 
registered by a granite countertop. Meanwhile, Texas and Washington set 
their limits at 10,000 picocuries.
Under the new rules, landfills 
would be able to accept radioactive oilfield waste such as filter socks,
 which must be shipped out-of-state for disposal. The shale boom in 
North Dakota, combined with one of the lowest radiation limits in the 
country, has led to a growing trend of illegal dumping within the state.
Last year, officials discovered what was believed to be the largest case of illegal dumping
 in the state's history near the town of Noonan. There, regulators found
 more than 200 55-gallon trash bags filled with oil filter socks in an 
abandoned auto repair shop.
Earlier this year, about 100 new and used filter socks were found
 in garbage bags inside a facility in the town of Williston. Green 
Diamond Environmental Trucking Services, which owns the facility, 
claimed the filter socks were dropped at the site by another company.
Opponents
 of the new rules caution that they could make North Dakota a dumping 
ground for other states, but an official told the AP that an influx of 
waste from outside the state was unlikely because of transportation 
costs.