Section 75.603 - Beginning the construction(a) A grantee must begin work on the construction project within a reasonable time after the Secretary has approved the project under § 75.601 .(b) A grantee must follow all applicable procurement standards in 2 CFR part 200, subpart D, when advertising or placing the project on the market for bidding. Authority: 20 U.S.C. 1221e-3 and 3474