Water resource data and trend analysis for the Highland Silver Lake comprehensive monitoring and evaluation project : Madison County, Illinois, phase IV /

"IEPA/WPC/86-001."

Water resource data and preliminary trend analysis for the Blue Creek Watershed Project, Pike County, Illinois : Phase I /

"IEPA/WPC/82-001".

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase III /

"IEPA/WPC/84-030."

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase I /

"November, 1982."

Water quality in Illinois, 1990-1991.

"IEPA/WPC/92-224."

Water resource data and trend analysis for the Blue Creek watershed project : Pike County, Illinois, phase III /

"IEPA/WPC/83-003X."

Water quality management basin plan, phase I : Kankakee River Basin.

Prepared by Division of Water Pollution Control, Planning and Standards Section.

Water quality assessment of Governor Bond (Greenville New) Lake Bond County, Illinois : 1977-1982.

"IEPA/WPC/84-011." -- Cover.

Storet II : storage and retrieval of data for open water and land areas /

Mode of access: Internet.

Sacramento River water pollution survey : Appendix A: Hydrography, hydrology, and water utilization.

Mode of access: Internet.

Air pollution control in California: annual report.

Mode of access: Internet.

Quantity-quality simulation (QQS) : a detailed continuous planning model for urban runoff control /

Mode of access: Internet.

Water pollution in the National Capital region : hearings ... Ninety-first Congress, second session.

Hearings held Mar. 25-June 25, 1970.

Empirical evidence showing the relationships between three approaches for pollution control

Willingness to pay models have shown the theoretical relationships between the contingent valuation, cost of illness and the avertive behaviour approaches. In this paper, field survey data are used to compare the relationships between these three approaches and to demonstrate that contingent valuation bids exceed the sum of cost of illness and the avertive behaviour approach estimates. The estimates provide a validity check for CV bids and further support the claim that contingent valuation studies are theoretically consistent.