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EspañolSEMSWA Grading, Erosion, and Sediment Control Manual
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- SEMSWA Grading, Erosion, and Sediment Control Manual
The Grading, Erosion, and Sediment Control Manual (GESC Manual), as amended, was adopted by the SEMSWA Board of Directors (Resolution 19-22) and Arapahoe County Board of County Commissioners in June 2019. This current version replaces the May 2018 approved manual (Resolution 18-13) as amended May 2012 (Resolution 12-20). This website contains the latest version.
The GESC Manual describes the permitting program that has been adopted to promote environmentally-sound construction practices in the entire SEMSWA Service Area, including City of Centennial and urbanized portions of Unincorporated Arapahoe County.
A GESC Fact Sheet Series (below) has been prepared to provided for GESC plan/report preparation, GESC permitting, and GESC BMP selection.
In addition to the Manual and Fact Sheet Series, SEMSWA provides this inspection/enforcement information for Contractors: Inspection/Escalation Enforcement Process Document
GESC Manual (complete)
GESC Manual (text only)
Appendix A: GESC Contact Information
Appendix B: Early Grading Form Letter
Appendix C: Engineers Cost Estimate
Appendix D: Example Single Family Lot Plans
Appendix E: GESC Plan and Report Checklist
Appendix F: GESC Plan Standard Notes and Details
Appendix G: Control Measures Legend and Approval Block
Appendix H: Definitions
GESC Process Matrix
GESC Fact Sheet Series
GESC Fact Sheet Series Index & Resource Guide
Fact Sheet 1.0 Regulatory Permitting
Fact Sheet 2.0 Submittal and Permit Process
Fact Sheet 3.0 Plan Report Submittal
Fact Sheet 4.0 Erosion Principles 10 Elements
Fact Sheet 4.1 GESC BMP Types
Fact Sheet 4.2 Drainageways
Fact Sheet 5.0 Field Processes and Enforcement
Fact Sheet 6.0 General Construction
Fact Sheet 7.0 Project Close-Out
Fact Sheet 8.0 Low Impact Permit
Fact Sheet 9.0 Single Family Lot Permit
Fact Sheet 10.0 Utility Construction
Fact Sheet 11.0 Temporary Batch Plant
Fact Sheet 12.0 GESC Outside of MS4
Most Popular Pages
Permitting
For Park, Metro Dist. & HOA Maint.
Information For Businesses
- GESC Considerations for Pipe Relining Operations
- GESC Considerations for Minor Right of Way/Streetscape Construction
- GESC Considerations for Minor Commercial Construction
- Annual Bore Utility Permits
- Land Development Review Process Explained
- Permits
- Fees
- Am I in the Floodplain?
- Working in the Floodplain
- Maintaining your pond or other stormwater feature
- Grant Program
- Pollution Prevention