UST closurein California
Closing an underground storage tank is a regulated process with permits, inspections and sampling. Here's what to expect and how Alliance handles the hazmat side.
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What closuremeans
In California, underground storage tanks are regulated under State Water Resources Control Board rules and overseen locally, typically by the Certified Unified Program Agency (CUPA). Taking a tank out of service generally requires a closure permit, an inspector on site during removal, and soil sampling to show whether the tank leaked.
Requirements and timelines vary by agency, so the first step is confirming what yours requires. Alliance handles the tank cleaning, removal, sampling, soil remediation and documentation.
Permits & inspections
Coordinating closure permits and inspection timing with the local agency.
Removal
Tank emptied, cleaned, excavated and removed with DOT-certified transport.
Sampling & reporting
Soil sampling at closure and documentation for the agency.
When the soilis contaminated
Older tanks frequently leaked. If closure sampling shows contamination, the impacted soil is excavated and disposed of, and the site is re-sampled to confirm. Budgeting for that possibility up front avoids surprises.
Closure sampling
Samples collected beneath and around the tank.
Excavate
Impacted soil removed where sampling shows it.
Dispose
Soil characterized, manifested and disposed of.
Confirm
Re-sampling to show the site meets standards.
UST Closure in CaliforniaFAQ
Who regulates UST closure in California?
USTs are regulated under State Water Resources Control Board rules and overseen locally, typically by the CUPA.
Do I need a permit to remove a UST?
Generally yes. A closure permit and inspection are typically required; your local agency sets the specifics.
What if the tank leaked?
Contaminated soil is excavated and disposed of, then the site is re-sampled.
Can you handle a residential heating-oil tank?
Yes. Contact us with the details and we'll scope it.