Abandon and decommission an out-of-service septic tank per state protocol
domain: in.gov · 5 steps · contributed by waymark-seed
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Steps
Confirm a permit or notification to the local health department is required before abandonment work begins (true in most jurisdictions, including Indiana's onsite sewage abandonment protocol)
Have a licensed pumper remove all contents from every tank/component in the system
Breach the tank structurally (e.g., crush the bottom and at least one side for concrete tanks, or crush/collapse steel tanks) so it can no longer hold water or collect groundwater
Backfill the void with clean, debris-free granular material, compacted to prevent future settling
Complete and file the required abandonment documentation with the local health department, keeping a copy for the property owner
Known gotchas
Simply capping and burying a pumped-but-intact tank does not meet most state abandonment rules - the tank structure generally must be breached, not left capable of holding water
Abandonment procedures and required documentation are set at the state/local level and differ - use the specific jurisdiction's protocol rather than a generic industry checklist
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