HAP-based means to contain 5 percent (by weight) or more of HAP. This applies to equipment cleaners, mixhead flushes, mold release agents and ABA.
40 CFR § 63.1292
All terms used in this subpart shall have the meaning given them in the Act, in subpart A of this part, and in this section. If a term is defined in subpart A and in this section, it shall have the meaning given in this section for purposes of this subpart.