No detectable emissions
No detectable emissions means no escape of HAP from a device or system to the atmosphere as determined by:
(1) Instrument monitoring results in accordance with the requirements of ยง 63.772(c); and
(2) The absence of visible openings or defects in the device or system, such as rips, tears, or gaps.
Source
40 CFR § 63.761
Scoping language
All terms used in this subpart shall have the meaning given them in the Clean Air Act (Act), subpart A of this part (General Provisions), and in this section. If the same term is defined in subpart A and in this section, it shall have the meaning given in this section for purposes of this subpart.