7.11.3 Stormwater Pollution Prevention Plan (SWP3) Summary Sheet and Environmental Layouts

Designing erosion and sediment control devices includes determining the type and size of facilities for minimizing erosion and siltation during and after project construction. SWP3 Summary Sheet and environmental layouts are prepared to show the construction of devices that minimize erosion and siltation during construction. Various grasses, and other typically proprietary devices, are used to control long-term erosion.

For projects that do not disturb soil (traffic signals, overlays, seal coats, etc.) a standardized General Note and inclusion of Item 504 will serve as the project SWP3. Refer to TxDOT’s PS&E Preparation Manual
for more details on developing these sheets.

Considerations in preparing the SWP3 Summary Sheet and environmental layouts include:

Prepare environmental layouts to indicate erosion control by construction stage if possible; and

Consider roadside safety in selecting the type of devices to include.

7.11 Environmental Design