(a) The secretary of state shall review an application for approval of a modified design.
(b) The secretary may approve the modified design by written order if the design satisfies the applicable requirements for approval.

(c) If the secretary does not approve the modified design, the secretary by written order shall:
(1) invite the applicant to submit additional information in support of the application, submit the modified system or equipment itself, or both; or
(2) require an examination of the modified system or equipment by independent examiners.