Agmt 2004 Kennedy Jenks Consultants

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EXHIBIT A SCOPE OF SERVICES Phase 2, Stress Test with Facilities Planning at the WPCP A. Evaluate the hydraulic capacity of the Chlorine Contact Tank (CCT). The hydraulic capacity of the CCT was a concern raised by the WPCP staff at the final workshop of the capacity analysis project that was conducted byKennedy/Jerks Consultants on June 4, 2003. Data for analyzing the hydraulic capacity of the CCT was already obtained during the capacity analysis (stress testing) project and will be used to calibrate the hydraulic model used to evaluate the CCT. Chlorine contact time will not be evaluated as part of the CCT hydraulic analysis. B. Evaluate performance of Primary Sedimentation Basins. According to WPCP plant personnel, the Primary Sedimentation Basins have reduced detention time and perform differently from the two circular primary clarifiers (Clarifier #1 and Clarifier #2) with respect to suspended solids removal. The performance of the primary sedimentation basins will be evaluated based on investigation of record drawings, interviews with WPCP plant personnel, and evaluation of primary sedimentation removal data, if available. C. Investigate solids handling capabilities including: Grit Removal: Currently there are no operable grit removal facilities at the WPCP. The feasibility of using the existing sedimentation basin for grit removal will be evaluated based on the ability of the sedimentation basins to provide adequate detention time for grit removal, the ability to remove the grit effectively and conveniently from the sedimentation basin, and the effect on primary clarification capacity. The ability to remove grit effectively will be based on recommended design values. Physical tests on the Sedimentation Basins will not be performed. 2. Sludge Thickening: The capacity of the existing sieve -drum unit will be evaluated based on existing and projected solids processing data at the plant. The evaluation will determine if another sludge-thickening unit is required. Mechanical reliability of the existing sludge-thickener will also be used in the evaluation and will be based on interviews with WPCP staff. 3. Sludge Digestion: The capacity of the existing sludge digestion system will be evaluated based on existing and projected solids processing data at the plant. The evaluation will consider detention time and volatile solids loading. Performance and mechanical reliability of the existing digester mixing and heating equipment will also be considered in the evaluation. D. Identif~lignid stream and solid stream treatment system bottlenecks and the flow at which these bottlenecks are limiting. Bottlenecks will be determined by analyzing flow and strength data already gathered in the capacity analysis project performed by Kennedy/Jerks Consulting Services Agreement between February 2, 2004 City of San Leandro and Kennedy/Jerks Consultants Page 15 of 19