Centennial, CO Environmental Rules: Erosion Control (2026)
Key Facts
- Permit name
- GESC Permit
- Issued by
- SEMSWA (regional drainage authority)
- Trigger
- Any land disturbing activity
- Manual dated
- May 2019
Summary
Any land-disturbing activity in Centennial needs a Grading, Erosion, and Sediment Control permit issued by SEMSWA before disturbance begins, under standards in the regional GESC Manual.
GESC permits are required for all land disturbing activities, prior to the disturbance. The permits are issued by SEMSWA according to the criteria of the GESC Manual. See Section 12-11-403, Grading, Erosion, and Sediment Control Manual.
Full Breakdown
Centennial's Land Development Code requires a GESC permit for all land disturbing activities, obtained prior to the disturbance. The Southeast Metro Stormwater Authority (SEMSWA), the drainage authority formed by intergovernmental agreement among Centennial, Arapahoe County, and area water and sanitation districts, issues the permit and applies the criteria of the SEMSWA Grading, Erosion, and Sediment Control Manual, a document adopted and amendable by City Council resolution and dated May 2019. The permit is typically obtained after site plan approval, if one is required, and before the disturbing activity commences.
Violations & Fines
Disturbing land without an approved GESC permit is an LDC violation subject to enforcement and a hold on further development orders under Article 15, Enforcement and Remedies.
Frequently Asked Questions
Who issues Centennial's grading permit?
When must I get the GESC permit?
Sources & Official References
Other rules in Centennial
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Erosion Control in Nearby Cities
How other cities in Arapahoe County handle erosion control.