Laws, Regulations, and Annotations Lawguide Search Business Taxes Law Guide—Revision 2026 BTLG Table of Contents > Hazardous Substances Tax Annotations > Hazardous Material Identification Hazardous Substances Tax Annotations Hazardous Material Identification (View entire annotation) Asbestos Classification of Substance as Hazardous Waste Containers and Packing Materials Materials Previously Classified by DTSC as Non-Hazardous Mixtures Oil and Water Mixture Waste