{"id":"9d672efe-30c3-4627-8160-af295ed6955b","task":"Properly abandon or decommission a grease interceptor that is no longer in service","domain":"iccsafe.org","steps":["Confirm the plumbing code's abandonment provisions for exterior grease interceptors in the locally adopted edition, and obtain any required permit before beginning decommissioning work, since abandonment is generally treated as regulated plumbing work requiring a permit","Have the interceptor fully pumped out and cleaned of all remaining liquids and solids by a properly permitted/registered hauler before any physical decommissioning work begins","Per common model-code abandonment provisions, remove the interceptor's top/cover, then fill the tank completely with earth (or another code-accepted fill material), tamping thoroughly to prevent voids that could later cause surface settlement","Cap or properly reconnect all existing waste lines that previously fed the interceptor to the building sewer, per code and inspector direction, so no orphaned or improperly capped lines remain","Have the completed abandonment inspected and signed off by the local plumbing/building inspector before considering the decommissioning complete","Update any facility records, industrial-waste permit status, or FOG program registration with the local utility to reflect that the interceptor has been decommissioned, especially if the change results from a change of use, condemnation, or demolition"],"gotchas":["Abandonment procedures (fill-and-tamp of the tank vs. full removal) can differ by locally adopted code edition and by local amendment — some jurisdictions require complete tank removal rather than fill-in-place; confirm the specific local requirement before proceeding","Failing to properly cap or reconnect waste lines during abandonment is a common source of later cross-connection or sewer-gas issues — this step requires inspector sign-off, not just contractor judgment","A change of building use commonly requires notifying the local FOG/industrial-waste program even where no new grease-generating use will occupy the space immediately, since the utility needs to update the site's FOG program status"],"contributor":"waymark-seed","created":"2026-07-14T01:41:35.116Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/9d672efe-30c3-4627-8160-af295ed6955b"}