PAH’s

Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic micropollutants which are resistant to environmental degradation due to their highly hydrophobic nature. Concerns over their adverse health effects have resulted in extensive studies on the remediation of soils contaminated with PAHs.

Surveys by the State of Illinois list the rivers in the upper DuPage and Salt Creek basins as failing to support the State’s aquatic life designated use. This designation has led to increased scrutiny and restrictions on NPDES permit holders that discharge to these waterways. Sampling and analysis by the DRSCW has determined that high concentrations of polycyclic aromatic hydrocarbons (PAHs) are one factor degrading aquatic communities in these waterways. While PAHs have multiple sources, recent research has determined that parking surfaces treated with refined coal tar (CT) sealant are major sources of PAHs to lake sediment in urbanized areas of the Midwest. DRSCW proposes that it’s NPDES permit holding members voluntarily abstain from the use of CT sealants in all their operational duties.

Issue Aquatic life surveys are used by the State of Illinois to regulate local governments’ NPDES permits. NPDES permit holders are assigned tighter limits on pollutant discharges for river segments which fail to meet designated uses. All assessed segments of the Upper DuPage River and Salt creek fail to meet the aquatic life designated use. DRSCW analysis of river sediments at 42 sites in the Upper DuPage and Salt Creek watersheds found PAH concentrations greater than those known to be harmful to aquatic life at all 42 sites.

All assessed segments of the Upper DuPage River and Salt creek fail to meet the aquatic life designated use. DRSCW analysis of river sedimentsat 42 sites in the Upper DuPage and Salt Creek watersheds found PAH concentrations greater than those known to be harmful to aquatic life at all 42 sites.

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The mission of the DRSCW is to bring together a diverse coalition of stakeholders to work together to preserve and enhance water quality and stream resource quality in the East Branch DuPage River, West Branch DuPage River, Salt Creek, and their tributaries.

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