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1. Executive Summary Table 2 — Other User Rates Description Current (FY 2024) Proposed (FY 2025) Private Fire Protections (per month) $17.23 $36.57 Bulk Service Water: $/kgal N/A $4.14 Sewer: Billing Charge: $/bill $1.47 $1.82 Service Availability Charge: $/ERU $15.24 $14.62 Volumetric Charge: $/kgal water meter basis $2.99 $3.55 Volumetric Charge: $/kgal sewer meter basis $3.39 $4.02 Reclaimed Water: $0.24 $0.30 Septage and Sludge (per wet ton) $17.05 $26.06 1.3.3 Rate Design Analysis • Stantec reviewed IRCDUS' existing water, sewer, and reclaimed water monthly user rates and rate structure relative to 1) conformity with accepted national and local industry practices, 2) fiscal stability and recovery of fixed costs through base charges, 3) water conservation principles, 4) affordability for low is volume and average users, and 5) low administrative burden and easily understood. Consistent with IRCDUS' rate structure, customary practice within the water industry is a two-part rate structure comprised of both fixed and variable charges and recovery of a portion of the costs of the system in a fixed readiness -to -serve charge. This practice recognizes that utilities have substantial investments in capital related costs and other fixed costs that are incurred year-round to maintain a state of readiness to meet the peak demands of their customers when they occur. Additionally, IRCDUS' volumetric rate structure for potable water is made up of a four -tiered inclining block structure, in which the rate per block increases at each threshold recognizing conservation pricing. For wastewater volumes, a single tier rate is applied to residential metered water use while non-residential customers fall into an inclining two tier block structure. Overall, IRCDUS' existing rates are consistent with other communities throughout Florida and the County's objectives. During the conduct of the Study, Stantec identified that the detailed customer billing records required to make structural changes to IRCDUS' rate structure were not available. Thereafter, IRCDUS began the process of extracting the necessary information to allow for future rate structure modifications as may be proposed in future rate studies. As such, Stantec doesn't recommend any structural modifications s IRCDUS provides services to approximately 250 private fire lines throughout the potable water system. a 6 •