Due to the age, condition, capacity, and service area growth of the City of Fulshear (City) Cross Creek Ranch (CCR) Wastewater Treatment Facility (WWTF), the City hired eHT to assist in the implementation of a major improvement project at the City’s existing CCR WWTF to upgrade, or where necessary, significantly increase the capacity of the overall WWTF, including the incorporation of a new advanced secondary treatment process. The upgrades to the City’s CCR WWTF are intended to increase the capacity of the CCR WWTF, improve the efficiency of overall plant performance, and improve the effluent quality for discharge into a local polishing pond adjacent to the WWTF. The CCR WWTF currently does not produce Type II non-potable water. In addition, the proposed secondary treatment improvements are intended to pave the way for future Type I non-potable and/or potable reuse capability (with the completion of additional polishing processes in the future).

The City’s CCR WWTF will plan to utilize effluent onsite and offsite, which is currently enforced by the TCEQ under Type II reclaimed water requirements as written in Title 30 of the Texas Administration Code (TAC), Chapter 210 regulations to support onsite plant water demands, as well as offsite Type I reuse water demands. The proposed upgrades for the CCR WWTF will include decommissioning of existing package treatment plants (flow to be diverted to the permanent facility), construction of a new preliminary treatment (headworks) system (including coarse mechanical screening), the conversion of the existing conventional activated sludge (CAS) aeration basins into an MLE basin (consisting of the addition of anoxic selector zone onto the existing aerobic basins), construction of an additional secondary clarifier, expansion of the existing chlorine contact disinfection system, retrofit aerobic digesters into solids storage basins, and construction of a new solids handling system.