River Islands, located within the Stewart Track in the City of Lathrop, is a 5,000-acre, master-planned community located southwest of the San Joaquin River. PACE was hired to provide master planning and design services for the development’s potable water, recycled water and sanitary sewer infrastructure. PACE worked with the developer’s general civil engineer to analyze and model all wet utility infrastructure and verify each system’s performance under average, maximum, and peak operating conditions. For the potable water distribution system model, peak conditions included verifying the performance of the system to meet fire flow requirements under maximum and peak hour potable water demands. PACE was also responsible for determining the design requirements for all infrastructure improvements such as the pumping capacity of lift stations and booster pump stations, and size and height requirements for storage tank sites.
The potable water distribution model was analyzed using WaterGEMS and includes approximately 325,000 LF of distribution piping, 20,000 GPM of pumping capacity across two booster pump stations, and 10.8 MG of storage. The sanitary sewer model was created and analyzed within ArcGIS and includes approximately 390,000 LF of collection piping, and 6 sewer lift stations. All model results were summarized in individual master plan reports submitted and approved by the City of Lathrop.
River Islands at Lathrop