Compliance Assurance Visible Emissions Videos

EPA Method 9 smoke school certification doesn't have to mean travel, scheduling conflicts, or weather delays. VirtualOpacity® is CAA's virtual reality (VR) training and certification platform — an EPA-approved alternative test method (ALT-152A) that brings the smoke school experience to your facility.

Observers complete the full certification process on-site using an immersive VR environment that replicates a real smoke plume with precision. The training meets all EPA Method 9 visible emissions certification requirements — without anyone leaving the building. VirtualOpacity is an especially practical solution for Title V permit holders and EHS professionals managing observer certification across chemical, petroleum, power generation, cement, and manufacturing facilities.

CAA's in-person smoke schools deliver hands-on EPA Method 9 visible emissions certification at locations nationwide. Observers work CAA smoke school instructors in the field, evaluating a controlled smoke plume to earn or renew their certification.

What sets CAA's in-person program apart is the use of digital field certification technology. Observers complete the process using a phone or tablet — eliminating waiting, paper forms, and providing digital recordkeeping from start to finish.

In-person smoke school is especially well-suited for first-time certification candidates and organizations that want hands-on, real-life training.

Baghouse filters are among the most widely used air pollution control devices in industrial operations — but what actually happens inside one? This video walks through the mechanics of baghouse filtration, how particulate matter is captured and released, and what can go wrong when a baghouse is underperforming.

For EHS managers and plant operators, baghouse performance has direct implications for visible emissions compliance. A failing or overloaded baghouse can produce excess opacity — triggering EPA Method 9 evaluation requirements and potential compliance issues under a facility's Title V permit.

Accurate opacity observation under EPA Method 9 starts with understanding how light behaves. This video explains the properties of light that are most relevant to visible emissions evaluations — and why they matter in practice.

Sun angle, background contrast, atmospheric conditions, and observer positioning all influence what a trained observer sees when evaluating emissions at a stack or fugitive source.

Whether you're preparing for smoke school certification or brushing up before recertification, a solid grasp of light properties makes for more accurate, defensible opacity readings in the field.