SEMSWA Grading, Erosion, and Sediment Control Manual
The GESC Manual, as amended, was adopted by the SEMSWA Board of Directors (Resolution 25-28), effective July 17, 2025 fo use within the City of Centennial portion of the SEMSWA service area. The current version replaces the February 2023 version.
The GESC Manual describes the program that has been adopted to promote environmentally-sound construction practices in the City of Centennial portion of the SEMSWA Service Area.
In addition to the GESC Manual, an Enforcement Response Plan (ERP) Guidance Document was adopted by the SEMSWA Board of Directors (Resolution 25-29), effective July 17, 2025 for use within SEMSWA's service area. The current version replaces the May 2018 version.
SEMSWA Enforcement Response Plan Guidance Document
GESC Manual
GESC Manual (Revised 7/16/25)Appendix A: GESC/ESC Standard Notes and Details (coming soon)
Appendix B: GESC Narrative TemplateAppendix C: ESC Plan TemplateAppendix D: Engineers Cost Estimate (.xlsx)Appendix E: GESC Plan ChecklistAppendix F: Early Grading Letter TemplateAppendix G-0: Low Risk GuidanceAppendix G-1: Low Risk Fact Sheet for Bore & Utility ProjectsAppendix G-2: Low Risk Fact Sheet for Minor Commercial and Residential ConstructionAppendix G-3: Low Risk Fact Sheet for Park Metro and HOAAppendix H: GESC Program Permitting Matrix