Public Resources Code § 48013
ARTICLE 2.1. State Solid Waste Postclosure and Corrective Action Trust Fund
Except as provided in paragraph (3) of subdivision (a) of Section 48010, an owner of multiple landfills for which evidence of financial ability is maintained pursuant to Article 4 (commencing with Section 43600) of Chapter 2 of Part 4 and whose landfills are operating on January 1, 2012, shall include all other landfills in which that owner has in common ownership in the letter of participation.