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 7/2025)Appendix A: GESC/ESC Standard Notes and Details Appendix B: GESC Narrative Template Appendix C: ESC Plan Template Appendix D: Engineers Cost Estimate (.xlsx)Appendix E: GESC Plan Checklist Appendix F: Early Grading Letter Template Appendix G-0: Low Risk Guidance Appendix G-1: Low Risk Fact Sheet for Bore & Utility Projects Appendix G-2: Low Risk Fact Sheet for Minor Commercial and Residential Construction Appendix G-3: Low Risk Fact Sheet for Park Metro and HOA Appendix H: GESC Program Permitting Matrix