Southeast Growth Area Water, Wastewater, and Recycled Water Modeling and Analysis
City of Fresno, California

West Yost provided hydraulic modeling, analysis, and model development of recommended backbone potable water, wastewater, and recycled water infrastructure required to serve buildout of the proposed Southeast Growth Area (SEGA) Project located in Fresno, California.

Backbone infrastructure was developed for two different land use scenarios.
For the non-potable (recycled water) system, West Yost developed a hydraulic model and allocated non-potable water demands based on two land use demand factors. A simulated 10 MG storage tank and a 30 mgd booster pump station were added to the model at the proposed WWTF location in south SEGA. Major transmission mains and backbone trunk mains were considered in the model. The alignment of the proposed large diameter non-potable main was chosen to avoid the proposed alignments of large diameter potable main and sewer trunk pipelines.

The recycled water transmission system was sized to deliver the peak hour flow rate, which is expected to be delivered for eight hours each night during the peak irrigation season. Peak hour flows are 6.6 times the average day demand. Engineer’s estimates for recommended pipelines, storage, and booster pump stations were also provided.