Section 635.123 - Determination and documentation of pay quantities(a) The State DOT shall have procedures in effect which will provide adequate assurance that the quantities of completed work are determined accurately and on a uniform basis throughout the State. All such determinations and all related source documents upon which payment is based shall be made a matter of record.(b) Initial source documents pertaining to the determination of pay quantities are among those records and documents which must be retained pursuant to 2 CFR 200.333 .56 FR 37004, Aug. 2, 1991, as amended at 85 FR 7293 , Nov. 16, 2020