) must be submitted for all subcontractors prior to the notice to proceed for construction. 000.0.0.0.0.0 Suspension and Debarment Certification (00 CFR 000.000) On all federal-aid construction contracts and all related subcontracts of $00,000 or more, the contractor and lower tier participants must certify they are in compliance with this provision. This includes subcontractors, material suppliers and vendors. 