30 C.F.R. § 560.210

Royalty suspension volumes, as specified in section 304 of the Act, apply to eligible leases that meet the criteria in § 560.113. For purposes of this section and §§ 560.113 through 560.117:

(a) Any volumes of production that are not normally royalty-bearing under the lease or the regulations (e.g., fuel gas) do not count against royalty suspension volumes; and

(b) Production includes volumes allocated to a lease under an approved unit agreement.