Air Quality Regulations (CAA) Flashcards

In an attainment area, what potential-to-emit threshold for a criteria pollutant generally makes a stationary source 'major' for Title V operating permit purposes?

Answer: 100 tons per year

Under Title V, a source with potential to emit 100 tpy or more of any air pollutant is generally a major source in attainment areas.

A facility emits 8 tpy of toluene and 20 tpy of combined hazardous air pollutants (HAPs). Is it a major HAP source under Section 112?

Answer: No, it is below both the 10 tpy single-HAP and 25 tpy combined-HAP thresholds

A major HAP source has PTE of 10 tpy of any single HAP or 25 tpy of any combination of HAPs, and this facility is below both.

Which control technology standard must a new major source in a nonattainment area meet under Nonattainment New Source Review?

Answer: Lowest Achievable Emission Rate (LAER)

Nonattainment NSR requires LAER, the most stringent rate achieved in practice, without considering cost.

Besides LAER, what other key requirement must a new major source in a nonattainment area satisfy?

Answer: Obtain emission offsets from existing sources

Nonattainment NSR requires emission reductions (offsets) from other sources so the area still makes reasonable further progress.

Prevention of Significant Deterioration (PSD) permitting applies to new major sources or major modifications located in which type of area?

Answer: Attainment or unclassifiable areas

PSD protects air quality in areas already meeting the NAAQS (attainment) or that cannot be classified.

What is the maximum term of a Title V operating permit before it must be renewed?

Answer: 5 years

Title V permits are issued for fixed terms not to exceed five years (40 CFR 70.6).

Under Title V, how often must a permittee submit reports of required monitoring, including deviations?

Answer: At least every 6 months

Part 70 requires monitoring reports at least every six months, plus an annual compliance certification.