SEMSWA has adopted minor revisions to the Grading, Erosion, and Sediment Control (GESC) Manual applicable within the City of Centennial, along with an updated fee schedule. Beginning July 28, 2026, all GESC Program submittals received by SEMSWA must comply with the 2026 GESC Manual requirements and associated fees. Questions about these revisions can be directed to semswamain@semswa.org.