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I '. I I I I I I I .. I I I I I I I ,. I . . Woodward-Clyde Consultants 2.0 SCOPE OF WORK WCC proposes to perform the following tasks in accordance with the Contract Conditions included in Attachment B. 2.1 TASK 1 - REVIEW OF EXISTING INFORMATION This task will be performed simultaneously with Task 2 - Field Investigation to provide rapid collection of the data required for evaluation of remedial alternatives. The purpose of the review is to familiarize WCC with previous work performed at the site. This will prevent unnecessary duplication during the investigation and data collection effort and will thereby minimize the length and cost of the investigation. The review will concentrate on available information concerning the configuration, condition and component material properties of the embankment and dam foundation. While significant gaps are believed to exist in the available database, especially concerning critical embankment and foundation material properties, we understand that valuable data from earlier investigations will be available. In addition, existing geologic maps and air photos of the site will be obtained and evaluated. Areal joint patterns and fault traces will be delineated and interpreted where possible and an evaluation of their significance to sinkhole development will be made. The proposed field investigation program will be refined based on the review of existing information to maximize the effectiveness and minimize the cost of the subsurface exploration. 2.2 TASK 2 - FIELD INVESTIGATION The purpose of this task is to provide sufficient data concerning the configuration, condition and component material properties of the embankment and foundation to provide a firm technical foundation for the development of a suitable, cost effective 92D227P!P227 06-2~-92(IO,17pm)IPRO/~4 -3-