Guidance manual for petroleum-related LUST cleanups in Illinois /

"Spring 1990."

Ground water level changes and demographic analysis of ground water in Illinois /

"October, 1981."

Groundwater withdrawals from aquifers in Illinois with emphasis on PWS wells /

Bibliography: p. 25-26.

Guidelines for solid waste management planning grants /

"September 1989."

Illinois annual air quality report.

Mode of access: Internet.

Illinois environmental emergency contact directory.

Cover title.

Illinois reasonable further progress report for 1985 : ozone and carbon monoxide.

"September, 1986."

Illinois reasonable further progress report for 1986 : ozone and carbon monoxide.

"September, 1987."

Illinois water quality report /

Mode of access: Internet.

Illinois water quality report.

Latest issue consulted: 2002.

Illinois water data catalog report /

"IEPA/WPC/85-007."-- Cover.

In the matter of a plan for protecting Illinois groundwater : report of the Board /

Caption title.

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

"February, 1981."

Lake water quality assessment program : northeastern Illinois lakes /

"The Northeastern Illinois Planning Commission's Natural Resources Dept. conducted the lake assessment data collection effort for the six county northeastern Illinois region." -- P. iii.

Lake water quality assessment program, 1993 : northeastern Illinois lakes /

"January 1995."