The evolution of environmental procedures has generated a considerable number of acronyms. These have been created for the names of many Federal and State agencies, laws, studies, terms, etc. The following identifies the more significant acronyms which may be used in conjunction with this study:

AASHTO – American Association of State Highway and Transportation Officials
ADA – Americans with Disabilities Act

BDE – (IDOT) Bureau of Design and Environment
BMP – Best Management Practices

CE – Categorical Exclusion
CERCLIS – Comprehensive Environmental Response, Compensation, and Liability Information System
CEQ – Council on Environmental Quality
CFR – Code of Federal Regulations
CMAP – Chicago Metropolitan Agency for Planning

DOI – (United States) Department of Interior

EA – Environmental Assessment
ECAD – Environmental Class of Action Determination
EIS – Environmental Impact Statement
EPA – (United States) Environmental Protection Agency
ESA – Endangered Species Act

FEMA – Federal Emergency Management Agency
FHWA – Federal Highway Administration
FONSI – Finding of No Significant Impact
FRA – Federal Railroad Administration
FSA – (United States) Farm Service Agency
FTA – Federal Transit Administration
FWS – (United States) Fish and Wildlife Service

IDNR – Illinois Department of Natural Resources
IDOA – Illinois Department of Agriculture
IDOT – Illinois Department of Transportation
IEPA – Illinois Environmental Protection Agency
IHPA – Illinois Historical Preservation Agency
INHS – Illinois Natural History Survey
INPC – Illinois Natural Preserves Commission
ISGS – Illinois State Geological Survey
ISTEA – Intermodal Surface Transportation and Efficiency Act (of 1991)
ISWS – Illinois State Water Survey

LAWCON – Land and Water Conservation Fund (Act)
LUST – Leaking Underground Storage Tank

MPO – Metropolitan Planning Organization

NAAQS – National Ambient Air Quality Standards
NEPA – National Environmental Policy Act
NFIP – National Flood Insurance Program
NPDES – National Pollutant Discharge Elimination System
NPS – National Park Service
NRCS – Natural Resources Conservation Service
NRHP – National Register of Historic Places

OWR– Office of Water Resources

PESA – Preliminary Environmental Site Assessment
PSI – Preliminary Site Investigation

RCRA – Resource Conservation and Recovery Act
ROW – Right-of-Way
RPB – Regional Planning Board

SAFETEA-LU – Safe Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users
SHPO – State Historic Preservation Officer
STP – Surface Transportation Program

TCM – Traffic Control Measure
TIP – Transportation Improvement Program
TSM – Transportation System Management

URAA – Uniform Relocation Assistance Act
USC – United States Code
USACOE – United States Army Corps of Engineers
USCG – United States Coast Guard
USDA – United States Department of Agriculture
USDOT – United States Department of Transportation
USGS – United States Geological Survey
UST – Underground Storage Tank