Cal. Pub. Res. Code § 41054

The city source reduction component shall evaluate and identify rate structures and fees to reduce the amount of wastes that generators produce, and other source reduction strategies, including, but not limited to, programs and economic incentives to reduce the use of nonrecyclable materials, replace disposable materials and products with reusable materials and products, reduce packaging, and increase the efficiency of the use of paper, cardboard, glass, metal, and other materials.