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Pacific Water Resources, Inc. <br /> Dragonfly Bend Habitat Enhancement Project <br /> City of Eugene Public Works Department <br /> j Project #4168 <br /> PACIFIC SCOPE OF WORK <br /> WA1ER RESOURCES, INC. " <br /> I <br /> I <br /> Design Review Services <br /> March Z5, 2004 <br /> Requirements of the Clean Water Act (CWA) and the Endangered Species Act (ESA) are <br /> <br /> ~r forcing a reevaluation of human impacts on aquatic resources. Improving water quality <br /> and habitat productivity requires new development and construction methods. Similarly, <br /> habitat enhancement projects require new paradigms as well. <br /> Habitat enhancement projects are challenging for a number of reasons. There are no <br /> widely accepted standards for designs or materials specifications. Design materials that <br /> are available tend to be prototypical, subject to change and of limited applicability. <br /> j Habitat enhancement goals require the use of organic materials such as large wood debris <br /> (LWD) or willow stakes. These materials are not dimensionally or physically stable. <br /> For these reasons, traditional engineering approaches are difficult to apply. Pacific Water <br /> Resources, Inc. (PWR) desires to assist public agencies in developing solutions to these <br /> problems. Fundamentally, this work involves natural systems which are inherently <br /> unpredictable. Until regionally accepted standards are developed, these types of projects <br /> will involve more risk than traditional endeavors. The use ofnon-traditional design, <br /> materials and construction methods imparts additional risk. <br /> The City of Eugene's Department of Public Works is designing the Dragonfly BHEP. <br /> The City recognizes that these projects and their implementation are not traditional. As <br /> project designers the City is responsible for all decisions affecting the design and its <br /> implementation. The City desires limited review and analysis of project documents ~y <br /> <br />