(a) Offerors proposing to use foreign construction material other than that listed by the Government in the applicable clause at 52.225-9, paragraph (b)(2), or 52.225-11, paragraph (b)(3), or covered by the WTO GPA or a Free Trade Agreement (paragraph (b)(2) of 52.225-11), must provide the information required by paragraphs (c) and (d) of the respective clauses.

(b) Unless the head of the agency specifies a higher percentage, the contracting officer must add to the offered price 20 percent of the cost of any foreign construction material proposed for exception from the requirements of the Buy American statute based on the unreasonable cost of domestic construction materials. In the case of a tie, the contracting officer must give preference to an offer that does not include foreign construction material excepted at the request of the offeror on the basis of unreasonable cost.

(c) Offerors also may submit alternate offers based on use of equivalent domestic construction material to avoid possible rejection of the entire offer if the Government determines that an exception permitting use of a particular foreign construction material does not apply.

(d) If the contracting officer awards a contract to an offeror that proposed foreign construction material not listed in the applicable clause in the solicitation (paragraph (b)(2) of 52.225-9, or paragraph (b)(3) of 52.225-11), the contracting officer must add the excepted materials to the list in the contract clause.