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Technical Memorandum: 6PPDQ Roadway Runoff Stormwater Composite Sampling Protocol Recommendation

Reference:

Herrera. 2024. Technical Memorandum: 6PPDQ Roadway Runoff Stormwater Composite Sampling Protocol Recommendation. Prepared for Washington State Department of Ecology by Herrera Environmental Consultants, Inc., Seattle, Washington.

This technical memorandum presents sampling protocol recommendations for using automated samplers to measure 6PPDQ in stormwater. The recommendations are based on a review of literature on the topic and on the 2023–2024 Field Protocol Sampling Study (field protocol study), which was designed to assess the potential loss of 6PPDQ to various sampling materials used during automated sampling programs. The project was funded by the Washington State Department of Ecology (Ecology).

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