Biological Stream Characterization (BSC) : a biological assessment of Illinois stream quality /

"IEPA/WPC/89-275"--Cover.

Biological and water quality survey of the Carroll Creek Watershed, Carroll County, Illinois, 1987-1988.

"IEPA/WPC/89-163."--Cover.

Biological investigation of Mississippi River central and north central basins, A-01, A-02, and B-01, B-02 /

Bibliography: p. 19-20.

Biological and water quality survey of three tributaries to the Sangamon River : South Fork basin, Mosquito Creek and Long Point Slough, September thru November, 1989 : Staff Report /

"May 1991."

Biological and water quality survey of the Vermilion River Vermilion County, Illinois, 1994 /

"May 1995."

Bureau of Land.

June 1993.

Chemical analysis of surficial sediments from 63 Illinois lakes : summer 1979 /

On cover: Investigations of Illinois surface waters.

Clean Lakes Program phase I diagnostic / feasibility study of Douglas Park Lagoon, Garfield Park Lagoon, Lincoln Park North Pond, Washington Park Lagoon : Chicago Park District, Cook County, Illinois /

"This report was financed in part by a grant from the U.S. Environmental Protection Agency under section 314 of the Clean Water Act."

Cleaning Illinois : status of the state's hazardous waste cleanup programs.

"Spring 1988."

Cleaning Illinois : status of the state's hazardous waste cleanup programs.

"Spring 1986."

Companies that treat, store, and dispose of hazardous waste : ... annual report /

Vol. for <1985> includes booklet for the Illinois Environmental Protection Agency hazardous waste treatment, storage, and disposal facility annual report forms and instructions for completing the annual hazardous waste report.

Comparative evaluation of gross erosion assessment techniques used in the Blue Creek Watershed /

Bibliography: p. 25.

Data collection methods and summaries for the assessment of stream water quality in the Vermilion River Basin (Wabash River), 2001 /

Cover title.

Effects of livestock wastes on small Illinois streams : Lower Kaskaskia River Basin and Upper Little Wabash River Basin : summer 1991 /

"July 1992."

Evaluation of Illinois sieved stream sediment data, 1982-1995 : staff report /

At head of cover title: Illinois Environmental Protection Agency, Bureau of Land.