08-1941 Emergency Design & Inspection Services for Gee Creek Weir at Laura Street Project

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SCOPE OF SERVICES FOR THE CITY OF CASSELBERRY GEE CREEK WEIR - EROSION CONTROL PROJECT SEPTEMBER, 2008 I. Project Description Camp Dresser & McKee Inc. (ENGINEER) has been selected by the Gty of Casselberry Public Works Department (CITY) to provide consulting services for the design of a replacement weir within the upstream reaches of Gee Creek, approximately 100 feet north of Laura Street. The existing weir failed during Hurricane Fay as water to the channel flowed around the sides of the weir and eroded the side banks of the channel. The west channel bank has a sheet pile wall that failed and the east bank is eroded just downstream of the weir. In order to repair the erosion problems in vicinity of the weir, the improvements will include replacement of approximately 100 linear feet of sheet pile wall on the west bank and stabilization measures on the east bank. The improvement areas are shown in Figure 1. II. Scope of Services Task 1 - Data Collection The CITY shall provide the following information that is available for the project including existing record drawings, or as-built drawings, sub-basin delineation maps, plat maps, GIS data, photos, permits, hydraulic and hydrologic models and calculations, and any other pertinent project data that has not already been provided to the ENGINEER. Subtask 1.1 Site Visits - The ENGINEER will perform a total of two (2) site visits to evaluate the condition of the existing weir and adjacent sheet pile wall. The ENGINEER will compare the site survey with observed field conditions and contact the CITY in the case of significant discrepancies that would require a modification to this scope of services. Subtask 1.2 Survey and Geotechnical Coordination and Review - This task includes coordination with a professional land surveyor and a geotechnical firm to help them understand the project goals for completing the topographic survey and geotechnical exploration. The ENGINEER will contract for the services of a professional land surveyor, Southeastern Surveying and Mapping Corporation (SSMC) to collect detailed survey within the project area. Topographic coverage will be limited to the project area, delineated on Figure 1. The ENGINEER will perform geotechnical services in-house, utilizing the expertise of Bill Fox, P.E. The ENGINEER will work with a drilling subcontractor to perform three (3) soil borings at the project site. A geotechnical report including recommendations for removal of unsuitable material, structure bedding recommendations, compaction requirements, and seasonal high water table elevations A c:1Ooc:umenIs IInll s.ttlngs1lllorTe$1Local8elllngs\T~ InlerMI FlleslOU<8\Scope08Se12 (4).Goc