Section 635.605 - Approvals and authorizations(a)Advertisement, award, and the relationship to NEPA.(1) The solicitation for an ID/IQ contract may identify all, some, or none of the specific locations where construction is to be required under the ID/IQ contract.(2) With prior concurrence of the Division Administrator, the contracting agency may advertise the solicitation for an ID/IQ contract prior to the completion of the NEPA process.(3) With prior concurrence of the Division Administrator, the contracting agency may award an ID/IQ contract prior to the completion of the NEPA process.(4) An authorization to proceed, or formal project agreement under § 630.106 of this chapter for an ID/IQ contract, shall not be issued or executed for final design or physical construction for work until the NEPA process has been completed for said work. An authorization or agreement under this paragraph may apply to work in multiple locations.(5) With the approval of the Division Administrator, the formal project agreement under § 630.106 of this chapter for final design or physical construction under an ID/IQ contract may be amended as necessary as additional work locations are identified and the NEPA process is completed for the additional work locations.(6) The agreement estimate for final design or physical construction required for an ID/IQ contract under § 635.115 shall not exceed the actual or best estimated costs of items necessary to complete the scope of work considered in applicable work orders and in the completed NEPA processes as described in paragraphs (4) and (5) of this subsection. The estimate shall be adjusted as necessary as set forth under § 630.106(a)(4) of this chapter.(b)Federal participation.(1) Subject to the requirements in this subpart, the contracting agency may request Federal participation in the costs associated with an ID/IQ contract, or portion of a contract. In such cases, FHWA's construction contracting requirements will apply to all ID/IQ contract work orders if any ID/IQ contract work orders are funded with Title 23, U.S.C. funds. Any expenses incurred before FHWA authorization shall not be eligible for reimbursement except as may be determined in accordance with § 1.9 of this chapter.(2) The applicable Federal share for each work order shall be specified in the relevant project agreement.