Boulder Creek (Boulder County and Weld County, Colo.)Langrangian Sampling of Wastewater Treatment Plant Effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, During the Summer of 2003 and Spring of 2005Steffanie H. Keefe Larry B. Barber (Dana W. Kolpin, Douglas J. Schnoebelen, Jennifer L. Flynn, Gregory K. Brown, Edward T. Furlong, Susan T. Glassmeyer, James L. Gray, Michael T. Meyer, Mark W. Sandstrom, Howard E. Taylor, and Steven D. Zaugg), Larry B. Barber, Steffanie H. Keefe author, Dana W. Kolpin author, Douglas J. Schnoebelen author, Jennifer L. Flynn author, Gregory K. Brown author, Edward T. Furlong author, Susan T. Glassmeyer author, James Gray author (L.), Michael T. Meyer author, Mark W. Sandstrom author, Howard E. Taylor author, Steven D. Zaugg author