A complete Floodplain Development Permit Application. The  application form must be signed by the applicant(s), property owner(s), and/or duly authorized representative(s). If the applicant and/or property owner is a Limited Liability Company (LLC), please also provide a list of all members of the LLC with your application.

Floodplain Development Permit fee. You must pay the application fee when you file your application.

Plans of a size and form meeting the standards established by the Floodplain Administrator, showing:

• The nature, location, dimensions, and elevations of the area subject to the development application; and

• The location of existing and proposed structures, fill, storage of materials, and drainage facilities;

In riverine flood zones, the proposed elevation (in relation to mean sea level) of the lowest floor (including basement) and all attendant utilities of all new and substantially improved structures, in accordance with the requirements of SRC 601.040(b);

A description of the extent to which any watercourse will be altered or relocated;

Base Flood Elevation data for subdivision proposals or other development when required pursuant to SRC 601.040(a) and 601.070(b);

A complete Substantial Improvement Worksheet, including a calculation for any improvement, addition, reconstruction, renovation, or rehabilitation of an existing structure; and

The amount and location of any fill or excavation activities proposed.

If floodproofing of a nonresidential building is proposed, the following is required:

• The proposed elevation in relation to mean sea level to which any non-residential structure will be floodproofed;

• A certification by a registered professional engineer or architect licensed in the State of Oregon that the floodproofing methods proposed for any non-residential structure meet the floodproofing criteria for non-residential structures in SRC 601.075(c)(3).

A complete Floodplain Development Permit Application. The application form must be signed by the applicant(s), property owner(s), and/or duly authorized representative(s). If the applicant and/or property owner is a Limited Liability Company (LLC), please also provide a list of all members of the LLC with your application.

Land use application fee. You must pay the application fee when you file your application.

Plans of a size and form meeting the standards established by the Floodplain Administrator, showing:

• The nature, location, dimensions, and elevations of the area subject to the development application; and

• The location of existing and proposed structures, fill, storage of materials, and drainage facilities;

In riverine flood zones, the proposed elevation (in relation to mean sea level) of the lowest floor (including basement) and all attendant utilities of all new and substantially improved structures, in accordance with the requirements of SRC 601.040(b);

A description of the extent to which any watercourse will be altered or relocated;

Base Flood Elevation data for subdivision proposals or other development when required pursuant to SRC 601.040(a) and 601.070(b);

A complete Substantial Improvement Worksheet, including a calculation for any improvement, addition, reconstruction, renovation, or rehabilitation of an existing structure; and

The amount and location of any fill or excavation activities proposed.

A floodplain mitigation assessment and mitigation plan in accordance with the requirements of SRC 601.100 and the Floodplain Habitat Assessment and Mitigation Regional Guidance for Oregon.

• You must provide either a complete Mitigation Assessment Worksheet or a Floodplain Mitigation Assessment and plan prepared by a qualified professional.

If floodproofing of a nonresidential building is proposed, the following is required:

• The proposed elevation in relation to mean sea level to which any non-residential structure will be floodproofed;

• A certification by a registered professional engineer or architect licensed in the State of Oregon that the floodproofing methods proposed for any non-residential structure meet the floodproofing criteria for non-residential structures in SRC 601.075(c)(3).