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
BR Biennial Report (under RCRA)
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 (RCRA Hazardous Waste)
CFC Chlorofluorocarbon(s)
CO Carbon Monoxide
CWA Clean Water Act
DMR Discharge Monitoring Report (under CWA)
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 Violation (under CAA; also see SNC)
ICIS Integrated Compliance Information System
ID Identifier or Identification Number
LQG Large Quantity Generator (RCRA Hazardous Waste)
MACT Maximum Achievable Control Technology (CAA program)
NAICS North American Industry Classification System
NC Noncompliance
NESHAP National Emission System for Hazardous Air Pollutants (CAA program)
NNCR NPDES Noncompliance Report (under CWA)
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
OMS U.S. EPA Office of Mission Services
OSHA U.S. Occupational Safety and Health Administration
PCE Partial Compliance Evaluation
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 Act Information System
RNC Reportable Noncompliance (under CWA)
SDWA Safe Drinking Water Act
SDWIS Safe Drinking Water Information System
SEC U.S. Securities and Exchange Commission
SIC Standard Industrial Classification
SIP State Implementation Plan (under CAA)
SNC Significant Noncompliance (or Noncomplier) (also see HPV)
SOx Sulfur Oxides
SQG Small Quantity Generator (RCRA Hazardous Waste)
TRC Technical Review Criteria (under CWA)
TRI Toxics Release Inventory
TRIS Toxics Release Inventory System
TSCA Toxic Substances Control Act
TSDF Treatment, Storage, and Disposal Facility (RCRA Hazardous Waste)
VOC Volatile Organic Compounds
VSQG Very Small Quantity Generator (RCRA Hazardous Waste)
ZIP Zone Improvement Plan [code]