ANS Control Paper
The US Army Corps of Engineers has published the Aquatic Nuisance Species (ANS) Control Paper: Inventory of Available Controls for Aquatic Nuisance Species of Concern – Chicago Area Waterway System.
The purpose of the ANS Control Paper is to identify the range of options or technologies available to prevent the ANS of Concern transfer in the CAWS. Each selected Control was identified as one that is potentially effective at preventing the transfer of the 39 ANS of Concern-CAWS via aquatic pathways. These organisms were previously identified as non-native species to be the initial focus of GLMRIS. This paper does not contain specific recommendations, rank the effectiveness of the Controls, or identify constraints, impacts, regulatory requirements or technological feasibility of application.
Controls include those that modify flow within a waterway, such as hydrologic separation of the basins, those that modify the water quality of a waterway, chemical application to ANS, collection and removal of ANS from a waterway, as well as other types of Controls currently in research and development.
ANS Control Fact Sheets
Click on the links below to view Appendix C: PDF fact sheets on the 27 ANS Controls.
Next Steps
USACE will consider comments received during this Comment Period, and will update the ANS Control Paper in spring 2012. An updated, final report will be posted to this Web site.
Using the information contained in the paper, USACE will develop screening criteria consistent with study objectives and refine the list of ANS Controls to determine which warrant further consideration. USACE will formulate plans comprised of one or more of the screened ANS Controls in consideration of four criteria: completeness, effectiveness, efficiency and acceptability. USACE will then evaluate and compare the effects of the alternative plans.
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