The public has until Dec. 16 to comment on a proposed settlement that requires Arkansas-based Denali Water Solutions LLC of Russellville to pay a $610,000 civil penalty due to alleged violations of the Clean Water Act. According to a press release from the U.S. Environmental Protection Agency, the organic residuals recycling company has agreed to pay the sum to settle with the federal government over violations that allegedly occurred in Arizona and California. Among its work, Denali provides land application services of sewage sludge, also known as biosolids, derived from wastewater treatment facilities, according to the EPA.