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3. Cost of Service <br />Service Availability Charge: $/ERU <br />$15.24 <br />$14.62 <br />Volumetric charge: $/kgal water meter basis <br />$2.99 <br />$3.55 <br />Volumetric charge: $/kgal sewer meter basis <br />$3.39 <br />$4.02 <br />3.4 RECLAIMED WATER RATES <br />IRCDUS' current reclaimed water customers are golf courses who receive water at little or no pressure and <br />use their own on-site pumping and storage facilities to store, pump, and distribute the reclaimed water. <br />Through discussions with IRCDUS staff and Stantec's experience with other sewer systems, 10.0% of <br />Wastewater Treatment, General & Engineering, and Wastewater Collection O&M costs and capital costs <br />were allocated to reclaimed water. Schedule 10 of Appendix B summarizes IRCDUS' allocated reclaimed <br />water costs for FY 2025. <br />IRCDUS operates its reclaimed water system primarily as a means for effluent disposal rather than a <br />substitute for potable water irrigation throughout its service area. Therefore, it is appropriate for reclaimed <br />water costs to be recovered through sewer rates. As such, Stantec recommends that IRCDUS apply the <br />proposed sewer rate adjustment to existing reclaimed water rates. <br />Table 13 — Reclaimed Water User Rates: Existing and Proposed <br />Description <br />Existing (FY 2024) <br />Proposed (FY 2025) <br />Volumetric Charge: $/kgal <br />$0.24 <br />$0.30 <br />3.5 SEPTAGE AND SLUDGE RATES <br />IRCDUS charges a septage and sludge rate for deliveries of septage, grease, and recreational vehicle (RV) <br />waste to its treatment facilities. These waste streams have increased solids and organic matter as <br />compared to domestic wastewater that is treated by IRCDUS which requires additional costs to be incurred. <br />As such, it is appropriate to establish a cost -based rate for IRCDUS to apply to such wasted received for <br />treatment. <br />The cost basis consists of IRCDUS' O&M expenses at the bio solids facility, sludge removal expenses from <br />its WWTFs, an allocation of indirect O&M expenses and capital costs proportionate to the direct O&M <br />expenses. Total costs were divided by average wet tonnage of overall septage, and sludge received by <br />IRCDUS to develop the unit cost. Schedule 11 of Appendix B summarizes IRCDUS' costs associated with <br />the management of septage and sludge and unit cost calculation. <br />Table 14 — Septage and Sludge Rates: Existing and Proposed <br />Description <br />Existing (FY 2024) <br />Proposed (FY 2025) <br />Septage and Sludge (per wet ton) <br />$17.05 <br />$26.06 <br />a <br />24 <br />• <br />• <br />