Section 300.820 - Administrative record file for a removal action(a) If, based on the site evaluation, the lead agency determines that a removal action is appropriate and that a planning period of at least six months exists before on-site removal activities must be initiated: (1) The administrative record file shall be made available for public inspection when the engineering evaluation/cost analysis (EE/CA) is made available for public comment. At such time, the lead agency shall publish in a major local newspaper of general circulation a notice or use one or more other mechanisms to give adequate notice to a community of the availability of the administrative record file.(2) The lead agency shall provide a public comment period as specified in § 300.415 so that interested persons may submit comments on the selection of the removal action for inclusion in the administrative record file. The lead agency is encouraged to consider and respond, as appropriate, to significant comments that were submitted prior to the public comment period. A written response to significant comments submitted during the public comment period shall be included in the administrative record file.(3) The lead agency shall comply with the public participation procedures of § 300.415(m) and shall document compliance with § 300.415(m)(3)(i) through (iii) in the administrative record file.(4) Documents generated or received after the decision document is signed shall be added to the administrative record file only as provided in § 300.825 .(b) For all removal actions not included in paragraph (a) of this section: (1) Documents included in the administrative record file shall be made available for public inspection no later than 60 days after initiation of on-site removal activity. At such time, the lead agency shall publish in a major local newspaper of general circulation a notice or use one or more other mechanisms to give adequate notice to a community of the availability of the administrative record file.(2) The lead agency shall, as appropriate, provide a public comment period of not less than 30 days beginning at the time the administrative record file is made available to the public. The lead agency is encouraged to consider and respond, as appropriate, to significant comments that were submitted prior to the public comment period. A written response to significant comments submitted during the public comment period shall be included in the administrative record file.(3) Documents generated or received after the decision document is signed shall be added to the administrative record file only as provided in § 300.825 .55 FR 8859, Mar. 8, 1990, as amended at 80 FR 17706 , Apr. 2, 2015