Illinois annual air quality report.

Mode of access: Internet.

Illinois companies that generate, treat, store, dispose or recover hazardous waste ... report.

Mode of access: Internet.

Illinois EPA policy & procedure manual.

Loose-leaf for updating.

Illinois EPA's quick answer directory.

Description based on: June 1996; title from cover.

Illinois EPA sludge regulation guidance document.

"Authors: James J. Janssen and S. Alan Keller." -- Bibliographic data sheet.

Illinois Landsat feasibility study /

Prepared for the Institute of Natural Resources by John Bishop in cooperation with the Dept. of Local Government Affairs and Illinois Environmental Protection Agency.

Illinois recommended standards for sewage works /

Effective March 31, l980.

Illinois solid waste management legislation.

"April 1996."

Illinois water monitoring strategy, 2007-2012.

"IEPA/BOW/07-005."--Cover.

Illinois water quality report /

Mode of access: Internet.

Illinois Volunteer Lake Monitoring Program newsletter.

Description based on: Sept. 1990; title from caption.

Illinois' Nonpoint Source Management Program.

"IEPA/BOW/01-009."--Cover.

Indian Refining/Texaco Superfund Site, Lawrenceville, Illinois.

"July 2007"

Investigation at Markham illegal dumping site : Markham, Cook County, Illinois.

"July 2010."

Investigations of six intermittent streams : (Solomon Creek, Otter Creek, Blue Creek, Kaskaskia Ditch, Steward Creek, and Brushy Creek) : April-September 1980.

"February, 1981."