The preliminary engineering and design phase of construction and non-construction projects includes development of design guidelines with requirements specified by state and federal statutes. The phase also includes the development of design layouts for non-construction projects and design schematics for roadway projects depicting proposed geometrics.

Design Concept Conference

A design concept conference is a meeting of key individuals to establish fundamental aspects of a project. The conference facilitates agreement to basic project features and enhances relationships between concerned parties. The local government should submit a listing of the design guidelines for construction and non-construction projects.

Preliminary Design

Preliminary design must include identification of environmental issues and commitments. Commitments are often included in the following project environmental documents:

• Categorical exclusion (CE)
• Environmental assessment (EA)
• Environmental impact statement (EIS)

Additional topics that should be considered during the preliminary design phase are:

• Coordination with the Federal Aviation Administration
• Compliance with accessibility standards
• Preparation of design surveys
• Landscape development
• Storm water management