In addition to the requirements of chapter 372-20 WAC, an application for an approval and a certification of necessity must be presented to ecology and shall include, but not be limited to, the following considerations:

(1) A general statement of the present and future sewage problems in the proposed area of service.

(2) A consideration of the relationship of the district to contiguous, nearby or overlapping sewer entities.

(3) Service areas considering reasonable drainage basin oriented planning.

(4) Population forecasts as a basis of sewer system design in the proposed service area.

(5) A layout map showing major trunk lines and interceptor lines including the drainage area to be served within and outside of the boundaries of the water district.

(6) The methods of interception and disposal of sewage.

(7) The projected completion time for the sewer system.

(8) An affidavit signed by an officer of the applicant water district, stating that all persons, parties or entities have been given the notice required by WAC 372-52-040.

(9) A summary setting forth the reasons why the applicant water district is better suited to provide a sewer system within the proposed service area than a contiguous or adjacent sewer entity.