Use WaiverSign's online liabiltiy release form software to quickly and easily create and administer your release form. Our design is accented with cyan and orange graphics to give it an appealing yet professional aesthetic.In this article, we explain what an enclosure is and how to cite one, and we provide an example of an enclosure in a business letter. Discussion of when the use of form AEO21 is appropriate, and instructions for completing it. General Comment: The latest FEMA Elevation Certificate form must be used. The form can be downloaded directly from the FEMA website (FEMA.gov). STEP 1: Determine whether your plan will be submitted online or in-person at OCFA, and note any special city requirements. When size, weight, or other factors prevent sending an enclosure with a letter, send it separately and type "(sep cover)" after the enclosure's description. Submittal Minimum Requirements. • A site plan is required and must include the location of the septic tank and drain field if applicable.