; (II) evaluating and weighing evidence; and (III) conducting peer reviews. (C) Updating guidelines Not less frequently than once every 10 years, the Administrator shall update the guidelines established under subparagraph (A) to enable each agency to use the best available techniques to identify, quantify, and evaluate the need for rulemaking and present and future benefits, costs, other economic issues, and risks as objectively and accurately as practicable. (2) Simplification of rules (A) Issuance of guidelines The Administrator shall issue guidelines to promote coordination, simplification, and harmonization of agency rules during the rulemaking process. (B) Requirements The guidelines issued by the Administrator under subparagraph (A) shall advise each agency to— (i) avoid rules that are inconsistent or incompatible with, or duplicative of, other regulations of the agency and those of other agencies; and (ii) draft the rules of the agency to be simple and easy to understand, with the goal of minimizing the potential for uncertainty and litigation arising from the uncertainty. (3) Consistency in rulemaking (A) In general To promote consistency in rulemaking, the Administrator shall— (i) issue guidelines to ensure that rulemaking conducted in whole or in part under procedures specified in provisions of law other than those under this section conform with the procedures set forth in this section to the fullest extent allowed by law; and (ii) issue guidelines for the adoption of rules under subsection (e)(3)(B)(iii), which shall provide a reasonable opportunity for cross-examination, as described in subsection (e)(3)(B)(iii)(III). (B) Agency adoption of regulations Each agency shall adopt regulations for the conduct of hearings consistent with the guidelines issued under this paragraph. (k) Agency guidance; procedures To issue major guidance