29-30 (citing 47 U.S.C. § 160(a)(l)-(3)). The Commission says that Qwest failed to meet that burden here and the Phoenix Order so concluded. See id. at 32-33. We first address the issue of burden of proof. Although the statute says nothing about it, the Commission has determined through a notice-and-comment proceeding that the burden of proof — en compassing the burdens of both production and persuasion — is on the petitioner. See In the Matter of Petition to Establish Procedural Requirements to Govern Proceedings for Forbearance Under Section 10 of the Communications Act of 1934, As Amended, 24 FCC Rcd. 9543, 9554-55, ¶ 20 (2009) [hereinafter Forbearance Procedures Order], That construction of section 10(c) is entitled to our deference. See Mead Corp., 533 U.S. at 230, 121 S.Ct. 2164 (<HOLDING>). And we believe the construction to be a
holding that chevron deference is due only to a reasonable interpretation made by the administrator of an agency holding that administrative implementation of a particular statutory provision qualifies for chevron deference when it appears that congress delegated authority to the agency generally to make rules carrying the force of law and that the agency interpretation claiming deference was promulgated in the exercise of that authority holding regulations entitled to chevron deference holding that agency interpretations promulgated by noticeandcomment rulemaking warrant chevron deference holding that chevron deference is due only when the agency acts pursuant to delegated authority