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...Date revised may to contractor and suppliers re invoice documentation requirements all invoices shall be submitted in english us dollars with the provided as cited below any without required will not considered proper within meaning of prompt payment act returned unpaid cases proof delivery for material orders must included each if a purchase order has been awarded time contractors are submit applicable costs well sheets accordance their po terms conditions following apply labor broken down by specification item number where listing hours worked per task whether straight or overtime rate total rates those agreed upon referenced on confirmation backup signed ship s personnel b copies other verifiable itemizing quantity unit issue price extended reconciled cross utilized performance contract work subcontractor itemized note that requirement items above c travel expenses when specified reimbursable expense i e airfare lodging meals incidentals reimbursed buyer unless records tor transport...