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City seeks Ecology funding to monitor 6PPDQ in stormwater after research links tire chemical to fish kills
Summary
City staff requested consent for about $88,000 in Ecology-funded monitoring of 6PPDQ, a transformation product of a tire antidegradant linked to coho salmon mortality. The proposed work would sample paired catch basins to measure how much 6PPDQ is captured by gray stormwater infrastructure.
The city submitted a proposal to the Washington State Department of Ecology to monitor 6PPDQ in urban stormwater and asked the PIES Committee for consent for about $88,000 in Ecology-funded work, presenter Trey said.
Trey described 6PPD as a tire additive that reacts with ozone to form 6PPDQ, the compound researchers identified as lethal to coho salmon and toxic to rainbow trout. "6PPDQ is what we're actually gonna focus on... 6PPDQ is lethal to coho salmon and toxic to rainbow," Trey said, adding that early discoveries were made around 2020 by researchers at the Washington Stormwater Center and that the issue has driven statewide and…
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