Iowa Code § 455B.474A
The rules adopted by the commission under section 455B.474 shall be consistent with and shall not exceed the requirements of federal regulations relating to the regulation of underground storage tanks except as provided in section 455B.474, subsection 1, paragraph "a", subparagraph (6), and section 455B.474, subsection 3, paragraph "d". It is the intent of the general assembly that state rules adopted pursuant to section 455B.474, subsection 1, paragraph "a", subparagraph (6), and section 455B.474, subsection 3, paragraph "d", be consistent with and not more restrictive than federal regulations adopted by the United States environmental protection agency when those rules are adopted.
Iowa Code § 455B.474A
2010 Acts, ch 1069, §58; 2011 Acts, ch 25, §139; 2013 Acts, ch 30, §101