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4 CHAPTER 2 TASKS The approved work plan identified six tasks that serve as channel-protection measures. These discussions and the main agenda for the project research; these are briefly guidelines are referred to herein as special topics. summarized below. C. Selection System TASK 1--LITERATURE REVIEW The team developed selection criteria and incorporated AND AGENCY SURVEY them into an expert selection system that may be used to A. Review of Technical Literature identify techniques that are suitable for specified river con- ditions, erosion problems, and economic constraints and that The team reviewed and evaluated the published technical address specified environmental goals or objectives. literature on environmentally sensitive slope protection and erosion control. Included in the review were such sources as TASK 3--INTERIM REPORT books, agency guidance manuals, handbooks, technical reports, journal articles, and conference or workshop pro- Information developed in Tasks 1 and 2 formed the main ceedings that have been published on the techniques. basis for an interim report. At a minimum the interim report included the following: B. Survey of State Transportation 1. A literature review and evaluation of environmentally and Regulatory Agencies sensitive channel- and streambank-protection measures, The team surveyed the design staff of state DOTs and reg- 2. Results of a survey of state transportation and regula- ulatory agencies to identify unpublished information, such tory agencies, as performance data, drawings, specifications, and guidance 3. A complete list of environmentally sensitive channel- pertaining to the application of the techniques. and bank-protection techniques for which the research team will develop guidance, 4. Complete design guidance (fact sheet, specifications, TASK 2--FORMULATION OF WORK PLAN information in text and tabular format, and well-refined drafting examples) for one of the environmentally sen- A. Identification and Description of sitive channel- and bank-protection techniques in each Environmentally Sensitive Techniques major group, 5. A status report on the development of the expert selec- The team developed a hierarchical list and classification tion system using the Exsys CORVID software, and system for the techniques, including descriptions, design 6. A revised proposed work plan attached as an appendix. guidelines, and selection criteria for the various techniques. The team incorporated the list of techniques into a selection The interim report was submitted as outlined; responses to matrix that describes the functional applications, suitability panel comments on the report were also prepared and sub- for various river conditions, environmental attributes, and mitted back to the panel. maintenance requirements of each technique. TASK 4--EXECUTION OF APPROVED B. Special Topic Modules WORK PLAN The team developed summaries on important topics that The team executed the approved work plan and developed are related generally to the selection, design, and imple- selection criteria and design guidelines for the approved list mentation of environmentally sensitive streambank- and of environmentally sensitive channel- and bank-protection