(C) Upon the filing of an application under division (B) of this section, the commission shall authorize a limited period for the filing of comments by any party regarding the application. After considering any such comments and only by order issued after the effective date of initial regulations adopted pursuant to the "Swift Rail Development Act," Pub. L. No. 103-440, 108 Stat. 4615, 49 U.S.C. 20153, the commission may approve the application, approve it with conditions, or reject the application. If the application is complete and otherwise meets all the requirements of this section, the commission shall approve the railroad quiet zone if the commission finds that the supplemental safety measures proposed for each public crossing included in the zone comply with the guidelines for the use and operation of those measures as set forth in Appendix (A) of 49 C.F.R. part 222 and are appropriate and adequate for the crossing. If the commission disapproves all or part of an application as to a particular crossing, the commission's order shall state the findings and reasons for disapproval. Nothing in this section precludes the subsequent filing of a substantially modified application by the municipal corporation or township. The commission shall reject an application that does not include the documents described in divisions (B)(2)(a), (b), and, if applicable, (B)(2)(c) and (d) of this section. If the application includes a written reply and a written statement described in division (B)(2)(a) of this section, the commission shall reject the application if the commission finds that the statement from the municipal corporation or township does not adequately address the concerns of the railroad contained in the railroad's written reply. If the application includes a statement described in division (B)(2)(d) of this section, the commission shall reject the application if the commission finds that the application does not adequately address the issue of the safety of those persons who will utilize the private grade crossings located within the quiet zone if the commission approves its creation.