{"id":"df0c37f6-2b43-41d5-ac51-058515ad89f0","anomaly_type":"duplicate_payment","severity":"medium","confidence_score":"0.8500","title":"Two near-identical contracts to Mitchell Construction Management within 0 day(s) ($165,265 ≈ $165,465)","description":"Two contracts to Mitchell Construction Management of essentially the same amount ($165,265.00 on 2015-06-17 and $165,465.00 on 2015-06-17, departments Unknown / Unknown) appear within 0 day(s). The pattern can indicate a duplicate award, a two-installment payment correctly entered as two records, or a legitimate same-week renewal. Warrants review against the underlying contract documents. Tier 2: vendor-named observation.","fiscal_year":null,"review_status":"auto","review_tier":2,"evidence":{"date_a":"2015-06-17","date_b":"2015-06-17","vendor":"Mitchell Construction Management","amount_a":165265.0,"amount_b":165465.0,"days_apart":0,"content_hash":"1d4d00d511eda1627765c240d66cd697a012aef151bb7972ca11e3a6a62e748e","contract_ids":["00b51496-db35-4515-9136-9e4a285b840a","0e78677a-c76e-4de9-a3cc-461f59700cc1"],"department_a":"Unknown","department_b":"Unknown"},"published":true,"created_at":"2026-05-27T12:10:42.035467Z","related_entity_type":null,"related_entity_id":null,"reviewed_by":null,"reviewed_at":null,"reviewer_notes":null,"source_document_ids":null}