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Environmental assessment : Warrenville Grove Dam modification, Warrenville, Illinois
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2011
[PDF-6.10 MB]
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Alternative Title:Warrenville Grove Dam modification, Warrenville, Illinois;Environmental assessment for the Warrenville Grove Dam modification, Warrenville, Illinois;
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NOAA Program & Office:
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Description:"This project is a component of the proposed ecological enhancement of a portion of the West Branch DuPage River, in accordance with National Oceanic and Atmospheric Administration (NOAA) Grant Award No. FNA07NOS4630002, DuPage River Restoration. The Environmental Assessment (EA) was prepared under the requirements of the National Environmental Policy Act (NEPA) (42 USC 432 1 et seq.) to consider and disclose any potential significant impacts to the quality of the human environment that may arise from the proposed modification of the Warrenville Grove Dam along the West Branch DuPage River, Warrenville, DuPage County, Illinois. The overall goal of this project is to restore the ecological health of an impounded segment of the West Branch DuPage River. The preferred alternative - dam removal - would largely remove the Warrenville Grove Dam and would allow for re-creation of upstream channel conditions, thereby: Restoring the natural ecological functions and processes of a freeflowing river segment, Decreasing lake-like conditions upstream of the dam that support high algal biomass, high water temperatures, and intermittent substandard dissolved oxygen levels, Decreasing barriers to fish migration and mussel dispersion, Decreasing maintenance needs and costs of the dam, Improving public safety, Providing improved educational and recreational opportunities tor the community, Improving the Qualitative Habitat Evaluation Index scores and functional aquatic habitat, and Improving sediment transport within the river. The preferred alternative was created through input from the Forest Preserve District of DuPage County (the landowner), the public, NOAA and other federal agencies. The project, as proposed, would not result in significant adverse environmental impacts. Short-term, temporary, and localized construction-related impacts to air quality and increases in noise from the use of construction equipment are anticipated. However, over the long-term, the proposed project is anticipated to markedly improve aquatic habitat, improve water quality, enhance the area's natural resources, and improve the public use and enjoyment of the area"--Cover letter; Portfolio comprised of 3 related PDF documents digitized and organized by: NOAA Office of Program Planning and Integration (PPI) National Environmental Policy Act (NEPA) staff.
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Content Notes:prepared by the National Oceanic and Atmospheric Administration, Office of Response and Restoration in partnership with DuPage County Stormwater Management & Forest Preserve District of DuPage County.
Title from t.p. (viewed June 1, 2012).
"August 12, 2011."
Accompanied by: PPI NEPA cover letter for Environmental Assessment (EA), Responsible Program Manager: David M. Kennedy, Assistant Administrator, NOAA National Ocean Service, Sept. 7, 2011; Finding of No Significant Impact (FONSI) from David M. Kennedy, Sept. 6, 2011.
System requirements: Adobe Acrobat Reader.
Mode of access: World Wide Web.
Includes bibliographical references.
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Rights Information:Public Domain
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Compliance:Submitted
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