Over the past three years, the City of Raleigh, North Carolina, with support from consultant Brown and Caldwell, prepared for an audit of the City’s National Pollutant Discharge Elimination System (NPDES) Phase I municipal separate storm sewer system (MS4) permit by the North Carolina Department of Environmental Quality (NCDEQ). In 2020, the City completed a year-long self-audit and rewrote its stormwater management plan (SWMP). In 2021, the City and consultant staff focused on resolving potential program gaps before the actual audit that occurred in early 2022. In this presentation, the speakers will share how they structured the self-audit, prepared for the NCDEQ audit, and realized successes and lessons learned over this three-year process. This discussion will interest Phase I and Phase II MS4 municipal staff, stormwater regulators, and consultants to municipalities subject to NPDES MS4 compliance and audits.

Contributor/Source

Justin Harcum;Stephanie Hanses, PE

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