Cost Analysis. Costs of potential improvements were estimated at milestone years for each entity. Cost analyses focus on the major improvements evaluated and discussed during stakeholder meetings and do not represent all possible alternatives. However, regardless of the improvements which will eventually occur, these costs analyses are believed to represent useful budgetary planning estimates. For improvements projected to occur by 2035, cost estimates included 20-year life cycle cost analyses. These analyses provide an estimate of capital expenditures (i.e., design and construction), periodic costs (i.e., equipment replacement), and annual costs (i.e., operations and maintenance) over a 20-year period. For improvements projected to occur after 2035, cost evaluations were limited to capital expenditures. Life cycle cost evaluations made this far in advance are not likely to be a useful planning tool. Additionally, potential advancements in technology and industry practice could significantly impact the accuracy of such life cycle costs. Capital costs, more easily and accurately estimated, provide entities with benchmark projections. Assumptions were made based on current industry metrics for wastewater improvements and operations. The following assumptions were used in generating life cycle costs: • $20/gallon for wastewater treatment facility construction and expansion • 3.3% annual inflation – (average from 1914-2023) • Periodic equipment replacements/upgrades every 15 years based on data from similarly sized facilities in Georgia • Annual costs, including operation and maintenance based on data from similarly sized facilities in Georgia Wastewater improvement cost evaluations are summarized in the tables below for each entity by the following milestone years: 2035, 2050, 2075. Year Improvement Capital Cost Life Cycle Cost ▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇ 2.0 MGD Construction $56,000,000 $76,000,000 IPR from WRF to Lake Varner1 $24,000,000 $30,000,000 20502 Eastside WRF 4.0 MGD Expansion $181,000,000 20752 Eastside WRF 4.0 MGD Expansion $406,000,000 1Potential option for IPR at Lake ▇▇▇▇▇▇ . Costs may be shared by NCWR. 2Cost estimates at this time horizon are subject to significant variability. However, these estimates suggest continued infrastructure expansions may be cost prohibitive, further illustrating the importance of reuse water and other more sustainable solutions. Year Improvement Capital Cost Life Cycle Cost 2035 ASEWRF 2.5 MGD Expansion $70,000,000 $112,000,000 YRWPCP IDPR to Lake Varner1 $19,000,000 $24,000,000 20502 ASEWRF 1.25 MGD Expansion $57,000,000 20752 YRWPCP 4.0 MGD Expansion $406,000,000 1Potential option for IPR at Lake ▇▇▇▇▇▇ . Costs may be shared by NCWR. 2Cost estimates at this time horizon are subject to significant variability. However, these estimates suggest continued infrastructure expansions may be cost prohibitive, further illustrating the importance of reuse water and other more sustainable solutions.
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