Field sampling procedures to quantify riverine plastic pollution in the U.S.
Ruth Branch1, Win Cowger2, Benjamin Maurer3, Zhaoqing Yang1, Ali Chamas3, Andrew B Gray4, Susanne M Brander5, Elise F Granek6 and Kelly Somers7, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)Moore Institute for Plastic Pollution Research, Long Beach, United States, (3)National Renewable Energy Lab, Denver, United States, (4)University of California Riverside, Riverside, CA, United States, (5)Oregon State University, Corvallis, OR, United States, (6)Portland State University, Environmental Science & Management, Portland, OR, United States, (7)EPA, DC, United States
