Scientific Investigations Report 2007–5185
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5185
This investigation was the result of a collaboration between the USGS and the Oregon Association of Clean Water Agencies (ACWA) with additional assistance from the Willamette Partnership. Janet Gillaspie, Executive Director of ACWA, aided this investigation through her leadership and coordination. A group termed the Scenario Development Team (SDT) provided useful discussions, insight, information, and guidance. The SDT was composed of USGS staff and ACWA members as well as representatives from the Oregon Department of Environmental Quality (ODEQ), the U.S. Army Corps of Engineers (USACE), and the Willamette Partnership. Thanks to ACWA members Mark Yeager (city of Albany), Steve Downs (city of Salem), Tom Mendes (Metropolitan Wastewater Management Commission of Eugene/Springfield), Larry Lamperti and Dan Hanthorn (city of Corvallis), Andrew Swanson (Clackamas Water Environment Services), Brett Arvidson (Oak Lodge Sanitary District), and Garry Ott (city of Portland). Thanks also to Jim Britton (USACE), Jim Bloom and Neil Mullane (ODEQ), and David Primozich and Charlie Logue (Willamette Partnership).
The assistance of Ryan Michie and Jim Bloom and their colleagues at ODEQ was greatly appreciated. Their willingness to share the final Total Maximum Daily Load models and point-source allocation spreadsheets, as well as many other pieces of data and information, made this investigation possible and greatly added to its collaborative nature. I thank them for enduring a number of meetings and for their patience in answering my questions and periodically providing me with information.
This report benefited from several helpful reviews. For their comments and suggestions on the draft manuscript, I thank Scott Wright (USGS), Lorraine Flint (USGS), Jim Bloom (ODEQ), Chris Berger (PSU), Jim Britton (USACE), and Tom Mendes (ACWA).