Headwaters Resources Inc. and Boral Material Technologies Inc. and a coalition of environmental groups filed motions for summary judgment August 14 asking the U.S. District Court for the District of Columbia to set a deadline for the Environmental Protection Agency to issue a final rule on coal ash management in three or six months, respectively. Both claimed that the agency violated Section 2002(b) of the Resource Conservation and Recovery Act by failing to review and revise regulations on the residue for coal-fired power plants.