2018—Subsec. (a). Pub. L. 115–270 substituted “$62,500,000” for “$50,000,000”.

2014—Subsec. (a). Pub. L. 113–121, § 1030(b)(1), substituted “$50,000,000” for “$35,000,000”.

Subsec. (b). Pub. L. 113–121, § 1030(b)(2), substituted “$10,000,000” for “$7,000,000”.

2007—Subsec. (b). Pub. L. 110–114 substituted “$7,000,000” for “$4,000,000”.

1986—Subsec. (a). Pub. L. 99–662 substituted “$35,000,000” for “$25,000,000”.

Subsec. (b). Pub. L. 99–662 substituted “$4,000,000” for “$2,000,000”.

1976—Subsec. (b). Pub. L. 94–587 substituted “$2,000,000” for “$1,000,000”.

1970—Subsec. (a). Pub. L. 91–611 substituted “$25,000,000” for “$10,000,000”.

Subsec. (b). Pub. L. 91–611 substituted “$1,000,000” for “$500,000”.

1965—Subsec. (a). Pub. L. 89–298, § 310(a)(1), substituted “$10,000,000” for “$2,000,000”.

Subsec. (b). Pub. L. 89–298, § 310(a)(2), substituted “$500,000” for “$200,000”.

Amendment by Pub. L. 99–662 not applicable to any project under contract for construction on Nov. 17, 1986, see section 915(i) of Pub. L. 99–662, set out as a note under section 426g of this title.

Pub. L. 94–587, § 133(c), Oct. 22, 1976, 90 Stat. 2928, provided that: “The amendments made by this section [amending this section and section 701s of this title] shall not apply to any project under contract for construction on the date of enactment of the Water Resources Development Act of 1976 [Oct. 22, 1976].”

Amendment by Pub. L. 91–611 not applicable to any project under contract for construction on Dec. 31, 1970, see section 112(c) of Pub. L. 91–611, set out as a note under section 426g of this title.