An intensive survey of the Kishwaukee River and its tributaries, 1983.

"IEPA/WPC/88-009."

An intensive survey of the Vermilion River basin, 1985-1986 /

"October 1989."--Cover.

An intensive survey of the Vermilion River basin, Illinois River drainage, summer 1990 /

"IEPA/WPC/93-192."--Cover.

An intensive survey of the American Bottoms Basin, 1984 / by Merrill R. Matson.

"June 1989."

An introduction to leaking underground storage tanks in Illinois.

"Fall 1994."

An intensive survey of the Mackinaw River Basin, 1994 : staff report /

"December 1996"--Cover.

Analysis of septic tank distribution and septage generation rates in Illinois /

"IEPA/WPC/84-003."

An intensive water quality survey of the Rock River from Rockford to Byron, Illinois, May-October, 1978 /

Bibliography: p. 35.

An investigation of volatile organic chemical contramination in groundwater new Rockton, Illinois /

"March 1988."

An Air monitoring survey design for toxic air pollutants : final report /

"ILENR/RE-AQ-89/05."

Annual air quality report.

Mode of access: Internet.

Annual report : IEPA emergency response.

Mode of access: Internet.

Annual report on hazardous waste, generation, treatment, storage and disposal.

Mode of access: Internet.

Annual report.

Report year ends June 30.

Aquifers of Illinois : underground sources of drinking water and non-drinking water /

"September, 1981."