Resources for EPA Method 9 and Method 22 Visible Emissions

• EPA Method 9 visual opacity web page »
• EPA Method 9 Visual Determination of the Opacity of Emissions from Stationary Sources »
• Method 203A Opacity Determination for Time-Averaged Regulations »
• Study guide for preparing for SES Method Group Exams » Provided by Source Evaluation Society
• Ringelmann Smoke Chart » By Bureau of Mines

Compliance Assurance Associates, Inc. smoke school documents

Have a question on visible emissions? Contact Compliance Assurance and we can answer your question and add your topic to our library.

The following are summaries of the following topics:

• What is smoke school? »
• 15 questions to ask your in-person smoke school provider »
• U.S. visible emissions history timetable »
• What is a baghouse? Filter emission systems »