Tank Abandonment in Place in California, California
When tank removal isn't feasible due to location constraints, abandonment in place may be an option. This involves properly closing the tank by filling it with foam or concrete slurry. In California, California, this must be done by licensed contractors following California State Water Resources Control Board guidelines.
About Tank Abandonment in Place in California
Tank abandonment in place is an alternative to removal when the tank is located under a building, driveway, or other structure that makes excavation impractical or prohibitively expensive. The tank is cleaned, filled with inert material, and properly closed. Note: Not all municipalities in California allow abandonment in place, and many buyers prefer removal.
Common in older Bay Area and coastal homes built before 1980.
When You Need Tank Abandonment in Place
- Tank located under building addition or porch
- Tank under driveway or patio that can't be removed
- Excavation would damage critical structures
- Cost of removal exceeds property value improvement
- Temporary solution while planning future removal
The Abandonment Process in California
- 1Verify abandonment in place is allowed by local jurisdiction
- 2Obtain necessary permits
- 3Drain all remaining oil from tank
- 4Clean tank interior to remove sludge
- 5Cut holes in tank to allow filling
- 6Fill tank with concrete slurry, sand, or foam
- 7Cap all pipes and openings
- 8Document abandonment with photos and records
- 9File closure paperwork with California State Water Resources Control Board
California Regulations
Regulatory Body: California State Water Resources Control Board
Permit Required: Yes
Permit Cost: $150-500
Notable Requirements: Strictest regulations in the nation. Local CUPA oversight required. Extensive soil and groundwater testing mandatory.
Tank Abandonment in Place FAQs for California
Is tank abandonment in place legal in California?
Tank abandonment in place is allowed in California under certain circumstances, but regulations vary by municipality. Some areas require removal regardless of location. Check with California State Water Resources Control Board and your local building department.
Will buyers accept a tank abandoned in place?
Many buyers and lenders prefer complete removal. Abandoned tanks may still affect property value and future sale. In California, real estate agents typically recommend removal when possible.
What's the difference between abandonment materials?
Concrete slurry is most permanent but heaviest. Foam fill is lighter and easier to remove later if needed. Sand fill is cheapest but may shift over time. Most California contractors recommend foam or concrete.
Can an abandoned tank leak later?
Properly abandoned tanks shouldn't leak because all oil is removed and the tank is filled solid. However, if not done correctly, residual oil or rust can still contaminate soil over time.
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