AQS Regulatory Compliance 4

Question 1

What does the 'de minimis' threshold represent in the context of air quality permitting?

Accepted Answer

Emission levels below which NSR permitting is not triggered

Answer

De minimis thresholds define emission increases too small to trigger NSR major modification review.

Question 2

A Title V permit contains a monitoring gap—there is no method to verify compliance with an emission limit. How should this be addressed?

Accepted Answer

The permittee must propose periodic monitoring sufficient to yield compliance data

Answer

EPA's periodic monitoring rules require permits to specify monitoring that yields data sufficient to determine compliance status.

Question 3

Under the Acid Rain Program (Title IV), SO2 allowances are traded. What does one allowance authorize?

Accepted Answer

Emission of one ton of SO2 during or after a specified year

Answer

Each SO2 allowance under Title IV authorizes the emission of one ton of sulfur dioxide and can be banked or traded.

Question 4

Which regulation requires major sources of HAPs to conduct a residual risk assessment after achieving MACT compliance?

Accepted Answer

CAA Section 112(f)

Answer

Section 112(f) requires EPA to assess residual cancer and non-cancer risks remaining after MACT standards are met and to set additional standards if risks are unacceptable.

Question 5

A facility operates a boiler subject to NESHAP Subpart DDDDD. It must conduct an initial performance test. When must the test be completed?

Accepted Answer

Within 180 days of initial startup or by the applicable compliance date

Answer

Major source boiler MACT (Subpart DDDDD) requires an initial compliance demonstration within 180 days of startup or the compliance date.

(AQS) Air Quality Specialist Certification Practice Test

(AQS) Air Quality Specialist Certification Practice Test

AQS Regulatory Compliance 4