For more detailed information about the acronyms on this page, refer to the EPA Terminology Services website.

Acronyms Used in ECHO
Acronym Meaning
AFO Animal Feeding Operation
AFS Air Facility System (for CAA)
AIRS Aerometric Information Retrieval System (for CAA)
BRS Biennial Reporting System
CAA Clean Air Act
CAFO Concentrated Animal Feeding Operation
CBG Census Block Groups
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act
CESQG Conditionally Exempt Small Quantity Generator (under RCRA)
CFC Chlorofluorocarbon(s)
CLO Closure Workload (under RCRA)
CO Carbon Monoxide
CWA Clean Water Act
DKT (Federal Enforcement) Docket
DMR Discharge Monitoring Report
ECHO Enforcement and Compliance History Online
EDGAR Electronic Data Gathering, Analysis, and Retrieval database (SEC)
EPA U.S. Environmental Protection Agency
EPCRA Emergency Planning and Community Right-to-Know Act
EP313 EPCRA Section 313 (established TRI)
ERNS Emergency Response Notification System
FAQ Frequently Asked Questions
FCE Full Compliance Evaluation
FESOP Federally Enforceable State Operating Permit (CAA program)
FIFRA Federal Insecticide, Fungicide, and Rodenticide Act
FIP Federal Implementation Plan (CAA program)
FRS Facility Registry Service
HPV High Priority Violator (under CAA; also see SNC)
I-3 Integrated Information Initiative
ICIS Integrated Compliance Information System
ID Identifier or Identification Number
IDEA Integrated Data for Enforcement Analysis
IWI Index of Watershed Indicators
LQG Large Quantity Generator (under RCRA)
MACT Maximum Achievable Control Technology (CAA program)
NC Noncompliance
NESHAP National Emission System for Hazardous Air Pollutants (CAA program)
NOV Notice of Violation
NOx Nitrogen Oxides
NPDES National Pollutant Discharge Elimination System (CWA permit program)
NSPS New Source Performance Standards (CAA program)
NSR New Source Review (CAA program)
OECA U.S. EPA Office of Enforcement and Compliance Assurance
OEI U.S. EPA Office of Environmental Information
OSHA U.S. Occupational Safety and Health Administration
OTIS Online Tracking Information System
PMT Permit Workload (under RCRA)
POTWs Publicly Owned Treatment Works
PSD Prevention of Significant Deterioration (CAA program)
QNCR Quarterly Noncompliance Report (under CWA)
RCRA Resource Conservation and Recovery Act
RCRAInfo Resource Conservation and Recovery Information System
RNC Reportable Noncompliance (under CWA)
RTKNet Right-to-Know Network (non-EPA site)
SDWA Safe Drinking Water Act
SDWIS Safe Drinking Water Information System
SEC U.S. Securities and Exchange Commission
SFIP Sector Facility Indexing Project
SIC Standard Industrial Classification code
SIP State Implementation Plan (under CAA)
SNC Significant Noncompliance (also see HPV)
SOx Sulfur Oxides
SQG Small Quantity Generator (under RCRA)
TRC Technical Review Criteria (under CWA)
TRI Toxics Release Inventory
TRIS Toxics Release Inventory System
TSCA Toxic Substances Control Act
TSD Treatment, Storage, or Disposal facility (under RCRA)
VOC Volatile Organic Compounds
ZIP Zone Improvement Plan [code]


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