; 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 (6) 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), (5), and (6) of subsection (c); (B) the evidence required under subsection (c)(3); (C) each plan required under paragraphs (9) and (10) of subsection (c); and (D) a detailed plan of the investigative sampling. (4) Requirements (A) In general If a person submits an application that proposes only investigative sampling of historic mine residue, soil, or water that only includes the requirements described in paragraph (1), the Administrator may only grant an investigative sampling permit that authorizes the person only to carry out the plan of investigative sampling of historic mine residue, soil, or water, as described in the investigative sampling permit application under paragraph (3). (B) Reprocessing An investigative sampling permit— (i) shall not authorize a Good Samaritan or cooperating person to conduct any reprocessing of material