Excerpts
Revisions to materials incorporated by reference in the HMR are handled via the rulemaking process, which allows for the public and regulated entities to provide input. During the rulemaking process, PHMSA must also obtain approval from the Office of the Federal Register to incorporate by reference any new materials. The Office of the Federal Register issued a rulemaking
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that revised 1 CFR 51.5 to require that an agency detail in the preamble of a rulemaking the ways the materials it proposes to incorporate by reference are reasonably available