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BACKGROUND Sanitary pump station S-6 was constructed in the 1960's. It is located at the northeast corner of the intersection of the Arroyo Mocho and Alamo Canal in northwest Pleasanton, adjacent to the West Las Positas Boulevard over-crossing of Interstate 1- 680. This pump station consists of a "metal can" dry well configuration pumping from an adjacent concrete wet well into a force main that runs northerly to the Dublin San Ramon Services District (DSRSD) treatment plant. The pumping equipment, electrical systems, and pump station building are all in a poor condition, with the pumps currently operating with capacity problems under both dry weather and wet weather flow conditions. On January 16, 2007, City Council approved a contract with BKF in the amount of $79,879 to complete (1) an evaluation of the condition of wastewater pumping station S- 6and (2) to provide apre-design study for a new pump station. The evaluation report was completed in March, 2007 and confirmed that the existing pump station is in poor condition and is in need of replacement. This report also indicated that the existing pump station is capable of providing the necessary services for the next three years while the new pump station is being designed and constructed. The pre-design study was completed by BKF in June, 2007. This pre-design report evaluated various alternatives for the future S-6 pump station, and resulted in the City selecting a "wet well submersible pump station" as the best alternative for the replacement of the S-6 pump station. Consultant Selection Now that the pre-design study has been completed, specialized engineering services are required to develop the necessary detailed plans and specifications for the selected alternative. These services include environmental, regulatory permitting, geotechnical, survey, structural, hydraulic, civil, mechanical, and electrical engineering functions. Using the City's consultant database and responding to letters of interest submitted by consultants, a total of fourteen (14) firms were invited to submit proposals. Four (4) firms responded to the Request for Proposal. After interviews and evaluation of the submitted proposals by City staff, Carollo Engineers was determined to be the most qualified consulting firm for the project. The interviews and proposals were evaluated on presentation, project understanding, project approach, members of the project team and previous experience with similar projects. Carollo Engineers has proposed to perform the scope of work fora "not-to-exceed" amount of $390,000. Staff has reviewed the tasks and associated fees and found them to be reasonable. Previous work performed by Carollo Engineers has been verified as satisfactory. The proposed contract between the City and Carollo Engineers is attached (Attachment 1) and includes the scope of work for the subject project, Exhibit A, and the hourly rate schedule, Exhibit B. A summary of estimated costs and a summary of the estimated consultant staff hours for these tasks is included in the attachments. Compensation for these tasks will be on a time and materials basis, with anot-to-exceed cost of $390,000. Page 2 of 3