94.501—Applicability.
(a)
The requirements of this subpart are applicable to manufacturers of engines subject to the provisions of subpart A of this part, excluding small-volume manufacturers.
(b)
The provisions of subpart F of 40 CFR part 89 (Selective Enforcement Audit) apply to engines subject to the provisions of subpart A of this part.
(c)
Manufacturers may comply with the provisions of 40 CFR part 1042, subpart D, instead of the provisions of this subpart F.