; (13) subject to subsection (d), a detailed plan for any required operation and maintenance of any remediation, including a timeline, if necessary; (14) subject to subsection (d), a description of any planned post-remediation monitoring, if necessary; and (15) subject to subsection (d), any other appropriate information, as determined by the Administrator or the applicant. (d) Investigative sampling (1) Investigative sampling permits The Administrator may grant an investigative sampling permit for a period determined by the Administrator to authorize a Good Samaritan to conduct investigative sampling of historic mine residue, soil, sediment, or water to determine— (A) baseline conditions; and (B) whether the Good Samaritan— (i) is willing to perform further remediation to address the historic mine residue; and (ii) will proceed with a permit conversion under subsection (e)(1). (2) Number of permits (A) Limitation Subject to subparagraph (B), the Administrator may grant not more than 15 investigative sampling permits. (B) Applicability to converted permits An investigative sampling permit that is not converted to a Good Samaritan permit pursuant to paragraph (5) may be eligible for reissuance by the Administrator subject to the overall total of not more than 15 investigative sampling permits allowed at any 1 time described in subparagraph (A). (3) Application If a Good Samaritan proposes to conduct investigative sampling, the Good Samaritan shall submit to the Administrator an investigative sampling permit application that contains, to the satisfaction of the Administrator— (A) each description required under paragraphs (1), (2), and (5) of subsection (c); (B) to the extent reasonably known to the applicant, any previously documented water quality data describing conditions at the abandoned hardrock mine site; (C) the evidence required under subsection (c)(3); (D) each plan required under paragraphs (9) and (10) of subsection (c)