Health and Safety Code § 25214.8.16
ARTICLE 10.2.2. Mercury Thermostat Collection Act of 2021
A person who demolishes a building shall remove any mercury-added thermostats from the building before demolition in accordance with all applicable statutes and regulations, and take the out-of-service mercury-added thermostat to a location that is authorized to collect out-of-service mercury-added thermostats.