Information on NPDES Permits (IEPA):
University of Illinois Extension
- overview
IDNR-Use of EcoCat and finding TRS values (required by NPDES permit application)
City of Chicago Invasive Species Ordinance
Sample ordinances from elsewhere in the United States
Portland, OR, invasive Plant Policy Review and Regulatory Improvement Project
European buckthorn (Rhamnus cathartica) (J. M. Randall)
