(1) When an appropriator cannot complete the project under a permit or change authorization by the project completion due date specified, an application for extension of time may be filed. The application must be postmarked by the project completion due date.

(2) A complete application must include the following:

(a) name, mailing address, and telephone number of applicant;

(b) identification number of the permit or change authorization;

(c) project completion due date;

(d) a chronological narrative describing how the applicant has diligently worked to complete the project, and a description of the work completed on the project prior to the deadline date;

(e) the reasons the project was not completed as scheduled which must include a discussion of how the information provided prior to the issuance of the permit or change authorization has changed concerning the following:

(i) the cost of the project;

(ii) the magnitude of the project;

(iii) the engineering of the project;

(iv) the physical features encountered during development of the project;

(v) the time line for completion of the project.

(f) a notarized signature; and

(g) the required filing fee.

(3) An application postmarked after the project completion due date is void.