Low impact development (LID) best management practices (BMPs) may aim to treat roadway runoff near its source through dispersion and infiltration. These BMPs are crucial for reducing chemicals such as 6PPD and 6PPD-q, which derive from tire preservatives and have been linked to high mortality rates in coho salmon. Unfortunately, WSDOT\u2019s current methods for estimating runoff infiltration rates is believed to be overly conservative, rendering the LID BMPs infeasible and substantially increasing runoff mitigation costs. Runoff infiltration rate is the product of saturated hydraulic conductivity and the hydraulic gradient. The goal of this research is to refine the method WSDOT uses to estimate hydraulic gradients, enabling it to produce more accurate and less conservative estimates of infiltration rates. These refinements should help improve the feasibility, cost-efficiency, and environmental effectiveness of LID BMPs used in WSDOT stormwater designs. This in turn should encourage broader adoption of LID BMPs and help reduce 6PPD-related environmental impacts, particularly in fish-sensitive areas.<\/p>\n\n\n\n
Principal Investigators: Sponsor: WSDOT Low impact development (LID) best management practices (BMPs) may aim to treat roadway runoff near its source through dispersion and infiltration. These BMPs are crucial for reducing chemicals such as 6PPD and 6PPD-q, which derive from tire preservatives and have been linked to high mortality rates in coho salmon. Unfortunately, WSDOT\u2019s current methods for estimating … Continue reading Right Sizing Low Impact Development (LID) Best Management Practices (BMPs) to Aid in Reducing 6PPD in Stormwater Runoff<\/span>
Brett Mauer<\/a>
Mike Gomez<\/a>
Pedro Arduino<\/a>
Civil and Environmental Engineering, UW<\/p>\n\n\n\n
WSDOT Technical Monitor: Rani Jaafar<\/a>
WSDOT Project Coordinator: Mustafa Mohamedali<\/a>
Scheduled completion: May 2027<\/p>\n","protected":false},"excerpt":{"rendered":"