Arkansas Attorney General Dustin McDaniel says a limit on phosphorus concentrations in the Illinois River in Oklahoma was "unfairly calculated" when it was set a year ago.
So, McDaniel said Wednesday that Arkansas entities will pay for a new $600,000 study to work out a more scientific and reasonable limit.
The Illinois is designated a scenic river in Oklahoma, but officials there say runoff from poultry operations in Arkansas has harmed the water quality in the river, which begins in Arkansas and flows into Oklahoma.