Reclaimed Water for Athletic Complex Irrigation, a City of Dallas Case Study
The Elm Fork Athletic Complex (EFAC), a 160-acre master-planned soccer facility, is proposed to be constructed in the City of Dallas (City). The EFAC will sit on the site of a former landfill, allowing the City to market this new facility to the soccer community, increase urban park area and trail networks, as well as promoting sustainable design and enhancement of stormwater quality. During design, the project included a Reclaimed Water Supply Feasibility Study, to evaluate the feasibility of providing reclaimed water (in lieu of potable water) for irrigation at the EFAC.
Five alternatives were evaluated in the Reclaimed Water Supply Feasibility Study:
1. Wastewater treatment scalping facility located within Dallas Water Utilities collection system
2. Wastewater treatment scalping facility located within Trinity River Authority (TRA) collection system
3. Diversion of TRA Central Regional Wastewater System’s effluent reuse in cooperation with Dallas County Utility Reclamation District (DCURD)/City of Irving (COI) with the following options: (a) Storage at a DCURD system lake with pumping to the EFAC on-site storage pond and/or directly to the irrigation system, (b) Storage in a new ground storage tank and pumping directly to the EFAC irrigation system, and (c) Direct diversion to the EFAC on-site storage pond
Site selection criteria were established for the determination of scalping facility feasibility. These site selection criteria were established from current Texas Administrative Code on the use of reclaimed water and reclaimed water production facilities. Two potential scalping facility sites were identified within one mile of the EFAC and were evaluated for feasibility.
In contrast to the City providing their own reclaimed water through a scalping facility, three options were evaluated for the purchase of reclaimed water from local sources (DCURD/COI) to supply the EFAC. This paper describes the regulatory and economic factors that were considered in the Reclaimed Water Supply Feasibility Study for providing reclaimed water to the EFAC. Items covered will include anticipated reclaimed water demands for the EFAC and for the potential of serving surrounding large water use customers, scalping facility capacity and technologies, connection to an existing reclaimed water system, in addition to comparable life cycle costs for each alternative as compared to potable water.