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Water Main Replacement El Monte. CA CLIENT CONTACT: City of EI Monte 11333 Valley Boulevard El Monte, CA 91731 Lee Torres, City Engineer 1626.580.2055 YEAR COMPLETED: Ongoing KEY PERSONNEL: Joseph Boyle I Maira Salcedo I Michael Swan I Benjamin Halbach I Kimberly Alexander I Dave Moritz SUBCONSULTANTS: GMU Psomas was retained by the City to provide PS&E, surveying, environmental and permitting, community outreach, and construction support services for the replacement of approximately 6,900 LF of 4- and 6-inch water mains with 8- and 12-inch mains in two areas of the City's distribution system due to their age and to improve fire flow and reliability. Because this is the first phase of a major water main replacement project, the scope also included updating the City's hydraulic model and running various scenarios to determine if the City should standardize on 6- and 10-inch or 8- and 12-inch pipelines for replacement of their aging, smaller diameter mains. This will eliminate the need to stock various different pipe sizes, fittings, valves and appurtenances. Psomas accomplished the scenario modeling, prepared an economic analysis, compared flow and pressure results, and prepared a technical memorandum documenting the analyses and presenting recommendations. After completion of the final design, Psomas will combine plans for sewer improvements in one of the two neighborhoods with the water improvement plans into one bid set so it can be constructed as one coordinated project to limit disruption to residents and business owners. On -Call Engineering Services El Monte, CA 17 � 3 CLIENT CONTACT: City of El Monte 11333 Valley Boulevard El Monte, CA 91731 Lee Torres, City Engineer 1626.580.2055 YEAR COMPLETED: Ongoing KEY PERSONNEL: Michael Swan I Kimberly Alexander Beginning in 2015, Psomas was retained by the City to update their hydraulic model from a 2010 Water Master Plan and provide on -call modeling services. This update entailed revising demands and supply source data for wells pumping into the system. Following the model update, Psomas has run scenarios for a couple of proposed development projects testing fire flow and developing capital improvement requirements for these new developments.