40 CFR 409.61 - Specialized definitions.
For the purpose of this subpart:
(b) The term gross cane shall mean that amount of crop material as harvested, including field trash and other extraneous material.
(c) The term net cane shall mean that amount of “gross cane” less the weight of extraneous material.
(d) The term x shall mean that fraction of the “net cane” harvested by the advanced harvesting systems.