; and (B) a 100-Mbps upstream transmission capacity. (2) Adjustments At least once every 2 years, the Secretary shall review, and may adjust through notice published in the Federal Register, the minimum acceptable level of broadband service established under paragraph (1) and broadband buildout requirements under paragraph (3) to ensure that high-quality, cost-effective broadband service is provided to rural areas over time. (3) Broadband buildout requirements (A) Definition of broadband buildout requirement In this paragraph, the term broadband buildout requirement means the level of internet service an applicant receiving assistance under this section must agree, at the time the application is finalized, to provide for the duration of any project-related agreement between the applicant and the Department. (B) Establishment of broadband buildout requirements The Secretary shall establish broadband buildout requirements that— (i) utilize the same metrics used to define the minimum acceptable level of broadband service under paragraph (1); and (ii) reasonably ensure— (I) the repayment of all loans; and (II) the financed network is technically capable of providing broadband service for the lifetime of any project-related agreement. (C) Substitute service standards for unique service territories (i) In general If an applicant shows that it would be cost prohibitive to meet the broadband buildout requirements established under this paragraph for the entirety of a proposed service territory due to the unique characteristics of the proposed service territory, the Secretary and the applicant may agree to utilize substitute standards for any unserved portion of the project. (ii) Requirement Any substitute service standards described in clause (i) should continue to consider the best technology available to meet the needs of the residents in the unserved area. ; (2) by redesignating subsections (g), (h), and (i) as subsections (f), (g), and (h), respectively