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Council advances stormwater and floodplain update; new permitting and fees proposed

5455062 · July 23, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

Thornton moved forward on a rewrite of its stormwater and floodplain rules on July 22, approving first reading of an ordinance that establishes a stormwater quality permit for disturbances of 1 acre or more, adopts the Mile High Flood District manual by reference, and updates fees and enforcement tools.

The Thornton City Council on July 22 gave first reading approval to an ordinance that reorganizes stormwater and floodplain rules, adopts the Mile High Flood District urban storm drainage criteria manual by reference and establishes a stormwater quality permitting system for development disturbances.

Keith Bisbee, the city’s stormwater coordinator, told the council the package extracts stormwater provisions from Chapter 18 and places them in a new Chapter 22 to consolidate technical standards, align enforcement under one group and move stormwater‑related fees into the stormwater enterprise fund. The change is intended to simplify…

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