Requirements for notifying state government
Those handling more than 10,000 lbs. of preservative TWW in any calendar year are required to register and notify the state of California.
TWW handlers generating more than 10,000 lbs. must first apply to the state Dept. of Toxic Substances Control (DTSC) for a Hazardous Waste Identification Number online or by calling 800-618-6942 within 30 days of exceeding the 10,000 lbs. limit.
A TWW handler that generates more than 10,000 lbs. of TWW in a calendar year shall notify the DTSC by submitting a DTSC notification form within 30 days of exceeding the 10,000 lbs. threshold.