{"id":"c3843530-975f-4bf0-9e35-a731262e2f5f","anomaly_type":"duplicate_payment","severity":"medium","confidence_score":"0.8500","title":"Two near-identical contracts to Churchill McGee within 0 day(s) ($6,377,831 ≈ $6,384,554)","description":"Two contracts to Churchill McGee of essentially the same amount ($6,377,831.18 on 2015-08-28 and $6,384,553.54 on 2015-08-28, 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":"2015-08-28","date_b":"2015-08-28","vendor":"Churchill McGee","amount_a":6377831.18,"amount_b":6384553.54,"days_apart":0,"content_hash":"48dfdff4da6d77a33a143f31bce31c7ba44078b4d8bd0a6497fd92b9ef777e87","contract_ids":["01cc6ae6-4d21-464e-b26f-0bfc19e728c9","1109e64a-7aff-405e-b300-81d82e788874"],"department_a":"Unknown","department_b":"Unknown"},"published":true,"created_at":"2026-05-27T12:10:42.023307Z","related_entity_type":null,"related_entity_id":null,"reviewed_by":null,"reviewed_at":null,"reviewer_notes":null,"source_document_ids":null}