Cal. Pub. Res. Code § 40127

“Diversion program” means a program in the source reduction and recycling element of a jurisdiction’s integrated waste management plan, specified in Chapter 2 (commencing with Section 41000) of, or Chapter 3 (commencing with Section 41300) of, Part 2 and that has the purpose of diverting solid waste from landfill disposal or transformation through source reduction, recycling, and composting activities. “Diversion program” additionally includes any amendments, revisions, or updates to the element, and any programs set forth in a time extension, alternative requirement, or compliance order approved by the board pursuant to Part 2 (commencing with Section 40900).