Guidance for California businesses

Businesses that generate TWW as part of their operations are subject to specific requirements, although they may be exempt from some requirements if they meet certain conditions. Any TWW generated by businesses must be disposed in an authorized disposal site and businesses should review requirements for storage, labeling, transportation, notifications and recordkeeping. Go to the specific topic under the TWW Basics section for detailed guidance.

Identifying TWWDetermine whether the wood to be removed is treated wood. See guidance
HandlingFollow overall recommendations. See guidance
StorageBusinesses may be exempt from storage restrictions, provided: 1) the TWW is not physically altered except for resizing to facilitate transport or reuse and 2) no more than 1,000 lbs. of TWW may be stored at one time. See guidance
LabelingAll TWW generated, accumulated, stored or transported by businesses within California must be clearly marked and visible for inspection. See guidance for sample label.
TransportBusinesses must follow specific requirements for consolidating TWW volumes and providing information that must accompany any shipments for disposal. See guidance
NotificationsBusinesses are exempt from notification provisions, unless they handle more than 10,000 lbs. of TWW in any calendar year. See guidance
RecordkeepingBusinesses are required to keep records of TWW disposal, which may take the form of a log, invoice, manifest, bill of lading, shipping document, or receipt from an approved TWW facility. Such records must be maintained for a minimum of three years. See guidance
ReuseTreated wood removed from its current use can only be reused under specific conditions. See guidance
Disposal sitesTWW must be disposed only at authorized disposal sites. Find disposal site