California bans more from the trash than most states, and two of the bans hit construction jobs directly.
Treated wood is the first. California requires lumber treated with chemical preservatives against insects and decay to be handled as hazardous waste, which means old fencing, deck boards, and sill plates have to be separated out rather than loaded. Asbestos is the second, and the state specifically flags older cement products, roofing, flooring, and siding as likely sources.
Beyond that, the state's banned-from-trash list is blunt: it is illegal to put hazardous waste in the garbage, down a storm drain, or on the ground. That covers oil-based paint, solvents, acids, pool chemicals, cleaners, pesticides, antifreeze, motor oil and filters, and any aerosol can that is not empty or is labeled toxic or flammable.
Batteries of every type are out, from AAA cells to car batteries. So are fluorescent tubes, metal halide and sodium vapor lamps, and even LED lamps, because of the metals inside them. Compressed gas cylinders, including barbecue and plumbing propane tanks, are banned too. Tires are not classed as hazardous but are still barred from the trash.
Unsure about something in the pile? Describe it to your account manager before it goes in the container.