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EXHIBIT A <br />Scope ofServices and Schedul of Work .. <br />Scope <br />Research and Investigation <br />Dudek will provide preliminary engineering services to collect and review existing background <br />data. Data collection includes right-of-way documents, existing utilities plans, soils and geologic <br />information, "as -built' construction drawings for the lake, park and existing nearby utilities, existing <br />hydraulic and master plans of drainage, irrigation plans, previous project reports, and proposed <br />development plans. In addition, a field reconnaissance investigation of the project study area will be <br />performed. The field investigation will include a verification of the site conditions and accuracy of the <br />existing improvement plans. <br />Soil Analysis <br />Excavate 5 small diameter borings to depths of 2 feet below the existing lake bottom. <br />Borings depths of 2 feet are based upon the assumption that the sediment on the lake <br />bottom is no more more than 1 -ft deep. We will geologically log the borings in <br />accordance with USCS standards and will collect samples for laboratory testing. The <br />borings will be backfilled with bentonite upon completion. <br />Perform laboratory testing which is anticipated to include grain size analyses, maximum <br />density/optimum moisture, in-situ moisture and density, direct shear, compaction, <br />permeability, and soil salinity, The laboratory test program will be determined based on <br />soil conditions encountered during our exploration. <br />Prepare a written report presenting our findings and conclusions and recommendations <br />regarding the proposed crossings, retaining (wing) walls, and pavement sections. <br />Deliverable: Soil sample analysis results, narrative interpretation of relevant soil characteristics <br />Water Quality Analysis <br />Dudek will obtain lake water samples and have them tested in a lab certified by the California <br />Department of Public Health. The lab will run a standard lake water quality test including: <br />• Surface Dissolved Oxygen reading <br />• Nutrients —Total Phosphorus <br />• Water Clarity —Turbidity, Color, Total Dissolved Solids <br />• Salts—Chloride, Conductivity <br />• Acid/Base Readings — pH, Total Alkalinity, Total Hardness <br />The test results will be used to provide physical indicators of specific problems with the lake water <br />quality and markers for measurement of improvement of the lake water quality after rehabilitation of <br />the lake. The lake water quality system will be designed to address the undesirable biological and <br />chemical components identified in the lake water. <br />Deliverable: Water quality sample analysis results, narrative interpretation of relevant water quality <br />characteristics <br />DUDEK Centennial Park Lake Circulation and Aeration Study � 11 <br />