SES is the Source Evaluation Society dedicated to excellence in Source Testing or Stack Testing. Tartek does not conduct stack testing but is often in the position of consulting on stack testing when particulate problems occur at a stationary source. Notice of Violation or NOV are sent by the EPA or States to industries in violation. Environmental Consultants often support the agencies or industries in litigations. It is easy to develop a mass opacity relationship for air pollution modeling.
Some consultants perform environmental audits of facilities including opacity observations.
Smoke school provide certifications to smoke school attendees.