TESC Manual

2019 Temporary Erosion and Sediment Control Manual


The GESC/DESC Manual has been renamed the Temporary Erosion and Sediment Control Manual (TESC Manual), and has been revised to comply with the Town’s MS4 (Municipal Separate Storm Sewer System) Permit with the Colorado Department of Public Health and Environment. It is in effect for all new projects after July 1, 2019.  

View a summary of the changes from GESC to TESC here.

The TESC Manual describes the permitting program that has been adopted to promote environmentally sound construction practices in Town. The goal of the program is to implement erosion and sediment control measures as a standard for all land-disturbance activities. The hope is to reduce increases in erosion and sedimentation over pre-development conditions. Erosion caused by construction and downstream sedimentation can damage property and degrade the quality of streams and lakes. The TESC Manual is a large document, so it may take several minutes to open the full manual.

2015 Grading, Erosion and Sediment Control / Drainage, Erosion and Sediment Control manuals


The GESC and DESC Manual (commonly known as the GESC Manual) will still apply to projects that were in review or started before July 1, 2019.


To view the Town's Storm Drainage and other technical criteria, view our Plans and Regulations page.

The links below enable you to view the entire manual or sections individually.

Erosion control


This training is for contractors wishing to learn more about erosion control and post-construction water quality. Suggested sources for training: