Overpayment on Earlier Work Precludes Contractor From Recovering Increased Costs Due To Later Contract Modification; ASBCA No. 60273, E.C. London & Associates, Inc.

Appeal of the deemed denial of a request for additional payment for work outside the original contract requirements is denied, where the government overpaid the contractor for services completed under the task order prior to its modification; and sustained in part, where the contractor is owed payment and interest on unpaid invoices.