Useful Links

LDEQ links:


Enforcement Division (includes Title V Annual Compliance Certification and Semi-Annual Monitoring Forms)


Chemical Accident Prevention and Risk Management Plans

Louisiana Air Quality Rules and Regulations

Public Records

LDEQ's Emissions Testing Program

Find an Accredited Laboratory

Small Business Assistance

Outside links:


Federal Air Quality Rules and Regulations (40 CFR)


EPA's Applicability Determination Index (ADI) is a web-based database that contains memoranda issued by EPA on applicability and compliance issues associated with the New Source Performance Standards (NSPS), National Emissions Standards for Hazardous Air Pollutants (with categories for both NESHAP, Part 61, and MACT, Part 63), and chlorofluorocarbons (CFC).


The Federal Register is the official daily publication for rules, proposed rules, and notices of Federal agencies and organizations (electronic copies available from 1994 forward).

Texas' Decision Support System provides applicability flowcharts for selected 40 CFR 60, 61, & 63 subparts (courtesy of the Texas Commission on Environmental Quality).


AP-42 contains air emissions factors for various processes and activities.

Federal Register Notices for Hazardous Air Pollutants (Title I, Section 112) - Proposed and Final Preambles and Rules


Fact Sheets for Hazardous Air Pollutants (Title I, Section 112)


Louisiana Department of Environmental Quality 602 N. Fifth Street Baton Rouge, LA 70802
Call or e-mail a hotline · Office Address/Phone listing · Locate a DEQ employee
Call 1-866-896-LDEQ or e-mail our Customer Service Center with questions or comments