Cal. Health & Safety Code § 41606
(a)
(b) For purposes of this section:
(1) “Qualified agricultural biomass” means agricultural residues that are purchased after July 1, 2003, that historically have been open-field burned in the jurisdiction of the air district from which the agricultural residues are derived, as determined by the air district, excluding urban and forest wood products, that include either of the following:
(2) “Facility” means any facility located in California that meets all of the following criteria:
(c)