Haw. Code R. § 11-186-20
Any person proposing a project that requires a certificate of need may file a letter of intent with the agency at the earliest possible opportunity The letter of intent shall describe the proposed project in such detail as may be necessary to inform the agency of the nature and scope of the proposed project The letter of intent shall include a description of the proposed project, its estimated cost, its location, and its estimated schedule The agency may require the person proposing the project to file additional information about the project with the agency as the information becomes available during the course of planning for the project A letter of intent and any information filed with the agency in accordance with this section shall not constitute an application for a certificate of need
Haw. Code R. § 11-186-20