; and (B) retain publically available records of all sampling events for a period of not less than 3 years. (5) Post-sampling remediation (A) Refusal to convert permit Subject to subparagraph (B), a person who obtains an investigative sampling permit may decline to apply to convert the investigative sampling permit into a Good Samaritan permit under paragraph (6) and decline to undertake remediation on conclusion of investigative sampling. (B) Return to preexisting conditions If the activities carried out by a person under an investigative sampling permit result in surface water quality conditions, or any other environmental conditions, that are worse than the preexisting conditions of the applicable orphan mine site due to historic mine residue at the orphan mine site, the person shall undertake actions to return the orphan mine site to those preexisting conditions. (6) Permit conversion Not later than 1 year after the date on which the investigative sampling under the investigative sampling permit concludes, a person to whom an investigative sampling permit is granted under paragraph (1) may apply to convert an investigative sampling permit into a Good Samaritan permit under subsection (e)(1). (e) Investigative sampling conversion (1) In general A person to which an investigative sampling permit was granted may submit to the Administrator an application in accordance with paragraph (2) to convert the investigative sampling permit into a Good Samaritan permit. (2) Application (A) Investigative sampling An application for the conversion of an investigative sampling permit under paragraph (1) shall include any requirement described in subsection (c) that was not included in full in the application submitted under subsection (d)(2). (B) Public notice and comment An application for permit conversion under this paragraph shall be subject to— (i) a period of public notice and comment