Pollution Sources Flashcards

Paint application operations at auto body shops are regulated HAP sources because they emit:

Answer: Chromium and isocyanates from coatings

Spray painting releases hexavalent chromium from certain primers and isocyanates from two-part urethane coatings, both regulated HAPs.

Under the Emergency Planning and Community Right-to-Know Act (EPCRA), facilities must report air releases of listed toxic chemicals through:

Answer: Toxic Release Inventory (TRI) Form R reporting

EPCRA Section 313 requires facilities that use or manufacture listed toxic chemicals above threshold quantities to file annual TRI Form R reports with EPA.

Which type of industrial source emits the most lead (Pb) air pollution in the United States today?

Answer: Piston-engine aircraft using avgas

Following the phase-out of leaded gasoline, piston-engine aircraft burning 100LL avgas became the largest single remaining source of airborne lead in the U.S.

Semiconductor manufacturing facilities are regulated NESHAP sources primarily due to emissions of:

Answer: Toxic gases such as arsine, phosphine, and chlorine

Chip fabrication uses highly toxic dopant and etchant gases including arsine, phosphine, and chlorine, which are regulated as hazardous air pollutants.

Which pollutant is the primary concern from crematoriums as regulated area sources?

Answer: Mercury from dental amalgam and dioxin/furan emissions

Crematoriums are regulated because they can release mercury from dental fillings and dioxins/furans from incomplete combustion of body tissues and caskets.

A facility emitting less than 10 tpy of any single HAP located in an urban area would typically be classified as:

Answer: An area source potentially subject to Urban Air Toxics rules

Area sources (below major source HAP thresholds) in urban areas may still be regulated under the Urban Air Toxics Strategy targeting 33 priority pollutants.

Natural gas pipeline compressor stations are air emission sources regulated primarily for emissions of:

Answer: Benzene, toluene, and VOCs from fugitive leaks and blowdowns

Compressor stations release VOCs and toxic air contaminants including benzene through fugitive equipment leaks, venting, and blowdown operations.