; (2) by redesignating subparagraph (B) as subparagraph (C); and (3) by inserting after subparagraph (A) the following new subparagraph: (B) Exception A task or delivery order contract in an amount estimated to exceed $100,000,000 (including all options) may be awarded to a single source without the written determination otherwise required under subparagraph (A) if the executive agency has made a written determination pursuant to section 3304 of this title that procedures other than competitive procedures may be used for the awarding of such contract. .