Creation of CIP project 61014 Goodyear Water Reclamation Facility (GWRF) 9.5 mgd Average Day Demand (ADD) Expansion and authorize related budget amendments for design services.

Approve Capital Improvement Plan (CIP) project 61014 Goodyear Water Reclamation Facility 9.5 mgd (ADD) Expansion and related budget amendment for design and pre-construction services of $7,000,000. (Barbara Chappell, Water Services Director)

Design and expansion of the GWRF is currently included in FY2027 (project 61-24-433) of the CIP with a design budget of $7,000,000 and construction budget of $80,000,000 representing a 3.0 MGD expansion completely funded through North Wastewater Development Impact Fees. This request reduces the initial planned expansion from 3.0 MGD to 2.0 MGD and advances funding to FY2024 enabling the commencement of the design phase, including pre-construction, while the construction timeline remains contingent on a continuous assessment of capacity, growth, and budget availability. Funding for this phase is available in the North DIF and Water Operations funds.

Due to planned process changes which impact current operations, funding will be proportionately split between the North Wastewater Development Impact Fee and the Wastewater Operating enterprise fund. This technology change was not anticipated as part of the current wastewater operating rates and will need to be factored into future rate studies.

A master plan of the GWRF was recently completed as part of CIP project 60112 (2023). The master plan included a comprehensive evaluation of treatment technologies, buildout capacity, site footprint, staffing needs and capital costs. Based on projected growth, a phased expansion is recommended - 10-year capacity (9.5 mgd); buildout capacity (11.0 mgd). The need for the first phase of expansion is anticipated by 2027.

The City is currently engaged in several initiatives aimed at enhancing capacity at the GWRF, which include a re-rate project (#60109) and master plan (#60112). At the completion of the re-rate, the GWRF will increase capacity from 6.0 to 7.5 mgd, addressing short term growth and removing the need for enhanced monitoring as required by the Maricopa County Environmental Services Department. The master plan identified there will be a need for expansion by 2027 to accommodate future growth, even with a reduction in brine flow expected by FY2025. The city is proposing to move this project forward to have a design solution in place to evaluate the construction timeline and costs during FY2025.