{"id":"e99a25d8-7756-47e8-b920-7a0852c63ce7","anomaly_type":"duplicate_payment","severity":"medium","confidence_score":"0.8500","title":"Two near-identical contracts to GRW Engineers within 0 day(s) ($25,000 ≈ $25,000)","description":"Two contracts to GRW Engineers of essentially the same amount ($25,000.00 on 2017-08-07 and $25,000.00 on 2017-08-07, 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":"2017-08-07","date_b":"2017-08-07","vendor":"GRW Engineers","amount_a":25000.0,"amount_b":25000.0,"days_apart":0,"content_hash":"ee344571e8f2c34ea8c5c02d4613fa01dbc5ef855897b725bcbcccab4d3e6f2b","contract_ids":["0b7287b7-2cd2-4fb9-96f0-71fe7fded239","df2b7f59-7012-48b6-b4e3-bd8a811c936b"],"department_a":"Unknown","department_b":"Unknown"},"published":true,"created_at":"2026-05-27T12:10:42.028249Z","related_entity_type":null,"related_entity_id":null,"reviewed_by":null,"reviewed_at":null,"reviewer_notes":null,"source_document_ids":null}