In 2020, the City of Charlotte and Mecklenburg County, North Carolina, adopted a new Stormwater Pollution Control Ordinance which included, for the first time, a prohibition on the use of pavement products containing more than 0.1% polycyclic aromatic hydrocarbons (PAHs) by weight. This ordinance change was adopted following several years of research, local monitoring, and correspondence with cities with similar prohibitions and outreach to local sealant manufacturers and other local stakeholders that this ordinance can potentially impact. The purpose of this prohibition is to reduce the amount of PAHs entering local streams from stormwater runoff with the goal to reduce in-stream PAH values below levels that are considered toxic to aquatic life. This presentation will summarize the research that led Charlotte-Mecklenburg to take this concern seriously, the results from local monitoring, and the stakeholder process used to adopt the new ordinance language.

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