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0 <br />CITY OF EL MONTE <br />WATER MAIN REPLACEMENT <br />El Monte, CA <br />- rive oia tu <br />-- ------ I I I I <br />1 <br />Psomas was retained by the City to provide <br />PS&E, surveying, environmental and permitting, <br />community outreach, and construction support <br />services for the replacement of approximately <br />6,900 LF of 4- and 6-inch water mains with <br />8- and 12-inch mains in two areas of the City's <br />distribution system due to their age and to improve <br />fire flow and reliability. Because this is the first <br />phase of a major water main replacement project, <br />the scope also included updating the City's <br />hydraulic model and running various scenarios <br />to determine if the City should standardize on <br />6- and 10-inch or 8- and 12-inch pipelines for <br />replacement of their aging, smaller diameter <br />mains. This will eliminate the need to stock <br />various different pipe sizes, fittings, valves and <br />appurtenances. <br />Psomas accomplished the scenario modeling, <br />prepared an economic analysis, compared flow <br />and pressure results, and prepared a technical <br />memorandum documenting the analyses and <br />presenting recommendations. After completion <br />of the final design, Psomas combined plans <br />for sewer improvements in one of the two <br />neighborhoods with the water improvement plans <br />into one bid set so it could be constructed as one <br />coordinated project to limit disruption to residents <br />and business owners. <br />REFERENCE: Lee Torres, City Engineer <br />626.580.2055 1 Itorres@elmonteca.gov <br />YEAR COMPLETED: 2022 <br />CITY OF EL MONTE <br />ON -CALL ENGINEERING <br />SERVICES <br />El Monte, CA <br />UNDER <br />ON -CALL <br />CONTRACT <br />Beginning in 2015, Psomas was retained by the <br />City to update their hydraulic model from a 2010 <br />Water Master Plan and provide on -call modeling <br />services. This update entailed revising demands <br />and supply source data for wells pumping into <br />the system. Following the model update, Psomas <br />has run scenarios for a couple of proposed <br />development projects testing fire flow and <br />developing capital improvement requirements for <br />these new developments. <br />REFERENCE: Lee Torres, City Engineer <br />626.580.2055 1 Itorres@elmonteca.gov <br />YEAR COMPLETED: Ongoing <br />