COUNTY OF LaSALLE, ex rel. GARY PETERLIN, STATE'S ATTORNEY OF LaSALLE COUNTY: THE VILLAGE OF NAPLATE, a municipal corporation; THE CITY OF OTTAWA, a municipal corporation; THE VILLAGE OF UTICA, a municipal corporation; OTTAWA TOWNSHIP BOARD OF TRUSTEES, ex rel. THE TOWN OF OTTAWA; RESIDENTS AGAINST POLLUTED ENVIRONMENT, an Illinois not-for-profit corporation; ROSEMARY SINON; MARIE MADDEN; and JOAN BENYA BERNABEI v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY; WILLIAM CLARKE; PIONEER DEVELOPMENT; PIONEER PROCESSING, INC., and WILMER AND EDITH BROCKMAN