As part of early project development, a geometric schematic may be prepared to describe the existing and proposed features and location requirements for a project.

An approved geometric schematic is required for new location or added capacity projects and for projects requiring control of access or an Environmental Impact Statement (EIS).

Geometric layouts

for other project types may be developed at the District’s discretion. These layouts do not go through the formal geometric schematic approval process, but are to be developed to the same level of detail, and can be submitted as the Initial (30% PS&E design) submission (see ).

A schematic preparation checklist can be found in the . The geometric schematic should include basic design information, which is necessary for proper review and evaluation of the proposed improvements.

Refer to the for a detailed discussion of the preliminary and final schematic preparation.