Announcements
Single-Walled UST Permanent Closure Deadline
All USTs that do not meet the requirements of H&SC 25291(a)(1)-(6) must be permanently closed on or before December 31, 2025. For more information, please visit: SWRCB Permanent Closure Requirements for Underground Storage Tank with Single-Walled Components.
Public Counter
The Environmental Programs Division Public Counter is located on the 3rd floor of the Annex building located at 900 South Fremont Avenue, Alhambra, CA 91803. The public counter is open Monday through Thursday 7:00 a.m. to 5:00 p.m.
General Inquiries & Submissions
For Underground Storage Tank inquiries or submissions, please email ust@pw.lacounty.gov or contact our public counter at (626) 458-3517.
The Underground Storage Tank (UST) program of the Los Angeles County Public Works, Environmental Programs Division permits and inspects underground storage tanks within the unincorporated areas of Los Angeles County and 77 cities.
Los Angeles County Code, Title 11, Division 4, established the UST program in 1983. The Los Angeles County UST program’s goal is to protect public health and safety and the environment by ensuring that UST facilities are permitted, designed, installed, modified, operated, and eventually closed in compliance with Local, State, and Federal regulations.
If you have any questions, please email ust@pw.lacounty.gov or contact our public counter at (626) 458-3517.
Most Requested UST Services
Additional Resources
Contact Us
Headquarters
LA County Public Works Headquarters
Los Angeles County Public Works
Environmental Programs Division
900 South Fremont Avenue
Annex Building, 3rd Floor
Alhambra, CA 91803
Public Counter: (626) 458-3517
Fax: (626) 458-3569
TDD: (626) 282-7829
The public counter is open Monday through Thursday 7:00 a.m. to 5:00 p.m. For general inquiries, please email ust@pw.lacounty.gov or contact our public counter at (626) 458-3517.
Field Facilities
UST inspectors are available Monday through Friday 8:00 a.m. to 9:30 a.m. unless otherwise noted.
Report Fraud
If you suspect fraud or wrongdoing by a County employee, please report it to the County Fraud Hotline at 1-800-544-6861 or http://fraud.lacounty.gov/. You may remain anonymous.
