Tank Abandonment in Place in Montana, Montana
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 Montana, Montana, this must be done by licensed contractors following Montana Department of Environmental Quality (DEQ) guidelines.
About Tank Abandonment in Place in Montana
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 Montana allow abandonment in place, and many buyers prefer removal.
Significant use in rural areas and older homes due to cold climate.
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 Montana
- 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 Montana Department of Environmental Quality (DEQ)
Montana Regulations
Regulatory Body: Montana Department of Environmental Quality (DEQ)
Permit Required: Yes
Permit Cost: $50-150
Notable Requirements: DEQ Petroleum Tank Release Compensation Board. Cold climate means many heating oil systems.
Tank Abandonment in Place FAQs for Montana
Is tank abandonment in place legal in Montana?
Tank abandonment in place is allowed in Montana under certain circumstances, but regulations vary by municipality. Some areas require removal regardless of location. Check with Montana Department of Environmental Quality (DEQ) 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 Montana, 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 Montana 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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