- APSA – Frequently Asked Questions (Statewide)
- APSA Program Guidance (May 13, 2024)
- APSA – State Overview & CUPA Implementation
- Underground Storage Tank Maintenance Fee – CDTFA
- HSC Chapter 6.7 – Underground Storage of Hazardous Substances (UST)
- CCR Title 23, Div. 3, Ch. 16 – Underground Storage Tank Regulations (Jan 2026)
- California Code of Regulations, Title 23, Division 3, Chapter 16 – UST Regulations (Jan 2026)
- CARB Executive Order VR‑301 – Standing Loss Control Vapor Recovery System
- CARB Truck & Bus Regulation – Official Program Page
- California Environmental Reporting System (CERS) Business Portal
- Dollars and Sense: Financial Responsibility Requirements for UST Owners & Operators
- Financial Responsibility for Underground Storage Tanks – EPA Guidance
- National Underground Storage Tank (UST) Program – Current Performance Overview
- Underground Storage Tank (UST) – Leak Detection Methods & SIR Overview
- Operating and Maintaining Underground Storage Tank Systems – EPA UST Program
- Spill Prevention, Control, and Countermeasure (SPCC) Rule – EPA Overview
- Straight Talk On Tanks – Leak Detection Methods for Petroleum USTs
- Understanding Automatic Tank Gauging Systems (Legacy SWRCB Guidance)
- Unidocs
