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16 THE CITY OF CITY COUNCIL AGENDA REPORT PLEASANTON. August 15, 2023 Public Works TITLE: CONSIDER AND APPROVE VARIOUS PROFESSIONAL SERVICES AGREEMENTS (INCLUDING THOSE WITH WOODARD & CURRAN FOR $666,365, PAKPOUR CONSULTING GROUP, INC. FOR $121,216, AND MARK THOMAS & COMPANY, INC. FOR $231,906) FOR THE DESIGN OF INTERIM WATER IMPROVEMENTS TO IMPROVE THE POTABLE WATER SYSTEM CAPACITY AND RELIABILITY FOR THE RECOMMENDED CIP NO. 24171, CIP NO. 24172, AND CIP NO. 24173 SUMMARY Interim water improvements are necessary to improve the water system capacity, which will better utilize existing turnouts and increase reliability until the long-term water supply assessment's selected alternative can be designed and constructed. The interim water improvements will consist of constructing three 18- to 24-inch pipe segments (totaling 9,600 feet) and installing a new water turnout and booster station at Turnout 4. The existing pipe network was designed utilizing the City's three wells. Increasing flows at the existing turnouts to meet the water demand without using the wells creates an imbalance in the system as well as higher pressures and velocities in the pipelines than is recommended by the American Water Works Association (AWWA) as the higher pressures and velocities lead to damaged pipelines and water main breaks. The interim water improvements will build a firm capacity to meet the existing maximum day demand of 25.8 million gallons per day (mgd) through the existing turnouts. The improvements were identified in the draft Water System Master Plan as necessary to meet future maximum day demands of 32.8 mgd regardless of the water supply assessment selected alternative(s). To complete the construction of the interim water improvements by summer 2024, it was necessary to divide the improvements into three projects to align with the available design capacity of the existing on-call consultants. Staff recommends awarding professional services agreements with Woodard & Curran for the design of Turnout 4, the booster station, and 3,500 linear feet of 24-inch pipe on Stoneridge Drive for the not-to-exceed amount of$666,365; Pakpour Consulting Group, Inc. for the design of 1600 linear feet of 18-inch pipe along Bernal Avenue near Turnout 5 for the not to exceed amount of $121 ,216; and Mark Thomas & Company, Inc. for the design of 4,500 linear feet of 20-inch pipe along Sunol Boulevard for the not-to-exceed amount of$231 ,906. RECOMMENDATION 1 . Approve and authorize the City Manager to execute a professional services agreement with Woodard & Curran for civil engineering services for the design of Turnout 4, the booster station, and 3,500 linear feet of 24-inch water main for the