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• 1998 storm 24-hour data. <br />Consultant Deliverables: <br />• Graphs of historical flow data. <br />• Summary table of storage volume requirements. <br />• Summary table of alternatives comparison. <br />• Summary table of cost of alternatives. <br />• Draft TM (5 hard copies). <br />Task 1.11- Digester 3 Evaluation. Consultant shall prepare a TM to evaluate whether to rehabilitate <br />Digester 3 or replace it with a new digester or another tank configured for another use. As part of this task, <br />Carollo will evaluate anticipated solids production to determine whether Digester 3 is needed for solids <br />treatment. Next, Carollo will rely on the limited condition assessment (concrete coring analysis) performed <br />by others for Digester 3 to estimate the extent of repairs needed in order to assess the cost and <br />constructability of this rehabilitation and compare it to the cost of providing a new tank for use as a digester <br />or another function (i.e. flow equalization) at the same location. <br />Information and/or Services Provided by City: <br />• Available record drawings and specifications of past WPCP designs. <br />• July 2008 Evaluation of Concrete Structures (Final Report). <br />• Input on operation and maintenance requirements of Digester 3. <br />Consultant Deliverables: <br />• Summary table of altematives comparison. <br />• Summary table of cost of alternatives. <br />• Draft TM (5 hard copies). <br />Task 1.12 -Electrical System Evaluation. Consultant shall prepare a TM to evaluate the key electrical <br />and instrumentation system improvements needed at the plant to support rehabilitation of the WPCP, <br />These include: 1) replacement alternatives for the Pacific Gas & Electric (PG&E) service transformer; 2) <br />replacement of main PG&E service and distribution switchboard; 3) upgrade of electrical service at the <br />existing Administration Control Building; 4) replacement of feeder to all MCCs; 5) replacement of MCCs A, <br />A1, D, E1, F, H, L, R, and S; 6) evaluation of the existing control system's capabilities to accommodate new <br />process requirements; and 7) evaluation of 480V radial and 12KV electrical system. <br />Consulting Services Agreement between Project No. 08-593-52-239 <br />City of San Leandro and Carollo Engineers, Inc. Page 23 <br />