; and (B) the head of the Office, in consultation with the Board of Advisors, approves of the certification under subparagraph (A). (2) Certification If the head of the agency makes a certification under paragraph (1)(A), the agency shall— (A) publish the certification in the Federal Register at the time of publication of general notice of proposed rulemaking for the rule or at the time of publication of the final rule, along with a statement providing the factual basis for such certification; and (B) provide the certification and statement described in subparagraph (A) to the head of the Office. (c) Similar rules In order to avoid duplicative action, at the discretion of the Board of Advisors and in consultation with the applicable Director, an agency may consider a series of closely related rules as 1 rule for the purposes of sections 301, 302, 303, and 306. 305. Procedures for gathering comments (a) In general When a rule is promulgated that will have a significant economic, environmental, or public health impact on a substantial number of members of 1 or more frontline communities, the head of the agency promulgating the rule shall ensure that frontline communities have been given an opportunity to participate in the rulemaking for the rule through, at a minimum— (1) the inclusion in an advanced notice of proposed rulemaking, if issued, of a statement that the proposed rule may have a significant economic, environmental, or public health effect on a substantial number of members of 1 or more frontline communities; (2) the publication of general notice of proposed rulemaking in publications likely to be obtained by frontline communities; (3) the direct notification of interested frontline communities, including through community centers and schools; (4) the conduct of open conferences or public hearings concerning the rule for frontline communities, including soliciting and receiving comments over computer networks