Cal. Pub. Resources Code § 16001
For purposes of this division, "recycled concrete" means reclaimed concrete material used in concrete mixtures in accordance with the "Greenbook Standard Specifications for Public Works" 2003 edition, or the most current revision of those requirements. "Recycled concrete" includes mix designs or aggregate gradations that are in accordance with the specifications or codes of the American Concrete Institute (ACI), the American Society of Testing and Materials (ASTM), the International Building Code (IBC), the International Residential Code (IRC), the California Building Code (Part 2 (commencing with Section 1.1.1) of Title 24 of the California Code of Regulations), Caltrans Standard Specifications, or the California Green Building Standards Code (Part 11 (commencing with Section 101.1) of Title 24 of the California Code of Regulations). However, reclaimed concrete material that is in compliance with ASTM-94 specifications is exempt from this division.
Ca. Pub. Res. Code § 16001