Professional Engineering Services For The Design Of A Chlorination System At Marengo Reservoir

The City of Alhambra Department of Utilities is soliciting proposals for professional engineering services to design a chlorination system improvement project at the Marengo Reservoir. The project involves replacing a 20-year-old on-site chlorine generation system with a new sodium hypochlorite storage and feed system. The comprehensive scope of work includes the demolition of the existing facility, construction of a new building, and the installation of reservoir mixing systems, water quality monitoring, and SCADA integration. The selected firm will manage all project phases, including existing conditions assessment, preliminary and final design, regulatory permitting support with the California State Water Resources Control Board Division of Drinking Water, and technical support during the bidding and construction phases. Proposals are due by 11:00 A.M. on July 23, 2026, and must be submitted in hard copy to the Utilities Department. The selection process utilizes a trade-off methodology, prioritizing the qualifications of the firm in municipal drinking water facilities, regional experience, and a proven track record with the Division of Drinking Water over the lowest cost. The contract is structured on a time and materials basis with a not-to-exceed cost proposal. Awarded consultants must maintain a City of Alhambra business license and provide minimum insurance coverage of 1,000,000 dollars for professional liability, contractual general liability, and comprehensive automobile liability. All designs must comply with NSF/ANSI/CAN 60 and 61 standards and be stamped by a Professional Civil Engineer registered in California.