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Cost Item Alternative 1 Alternative 2 Alternative 3
<br />Staffing (annual) (1) (9)- $111,636 $167,455
<br />Chemical Treatment (annual) (2)$13,200 $78,900 $85,500
<br />Rountine Process Equipment Maintenance (3)$2,880 $11,635 $15,560
<br />Well Rehabilitations (4) (9)- $3,409 $5,113
<br />Well Pump Replacements (5) (9)- $18,747 $28,121
<br />Routine Electrical/Instrumentation
<br />Maintenance (annual) (6) (9)
<br />- $50,976 $76,463
<br />Electrical/Instrumentation Overhauls (7) (9)- $17,043 $25,564
<br />Pumping Electrical Power (annual) (8) (9) - $1,216,055 $1,216,055
<br />Chemical Process Equipment Replacement (10)$4,814 $14,337 $26,011
<br />Total Annual O&M Costs (11)$20,894 $1,522,738 $1,645,842
<br />Notes
<br />Pleasanton GW Supply Alternatives Study
<br />Estimated Annual O&M Costs for Alternatives(12) (13)
<br />2) Annual chemical costs were estimated by Carollo and detailed in Appendix C. Annual chemical supply costs for Alternative 1
<br />includes flouride for Turnout No. 8. Alternative 2 includes flouride costs for Turnout No. 8 and chloramination chemical costs, which
<br />are assumed to be equivalent to Alternative 3. Alternative 3 includes flouride and chloramination chemical costs for both well sites.
<br />3) Annual O&M costs for the chemical process equipment was assumed to be approximately 2% of process equipment costs as
<br />detailed in Appendix C. For Alternative 2, the O&M costs was assumed to be approximately 2% of chloramination upgrade direct
<br />costs.
<br />1) Annual labor for operations, maintenance, reporting, and compliance.
<br />4) Equivalent Uniform Annual Cost (EUAC) of planning-level rehabilitation measures (mechanical/chemical) at year 20 and 40.
<br />5) EUAC of full pump replacement (column, motor, and bowl assembly) at year 20 and 40.
<br />6) Annual SCADA/PLC maintenance and instrumentation replacement/calibration.
<br />7) EUAC of major electrical renewal (e.g., cabinets, breakers, PLC/SCADA upgrades, VFDs, etc.) at year 20 and 40.
<br />8) Annual pumping energy cost. For Alternative 2, City cost share for O&M is 50%.
<br />9) Costs taken from Regional Groundwater Facilities Project Feasibility Study prepared by LSCE (2025). Costs provided in the
<br />Regional Groundwater Facilities Feasibility Study are from May 2025. According to Engineering News Record’s 20-City Cost Index,
<br />market escalation from May 2025 to February 2026 is 2 percent. The costs provided in this table are escalated to 2026 dollars. For
<br />Alternative 2, City cost share for O&M is 50%. For Alternative 3, it was assumed O&M costs are 75% of Alternative 2 O&M costs
<br />despite the annual production being half due to a loss in the economy of scale.
<br />10) EUAC of full chemical process equipment replacement at year 20 and 40. Present value of replacement costs used to calculate
<br />the EUAC were estimated by Carollo as detailed in Appendix C.
<br />11) Does not include financing costs, permitting, land acquisition, administrative overhead, or other soft costs.
<br />12) Estimates do not account for emergency repairs, catastrophic equipment failures, or changes in regulatory standards.
<br />13) All costs are estimates, expressed in 2026 dollars (constant, no escalation) with no allowance for future inflation or changes in
<br />labor/chemical/energy prices to be consistent with Regional Groundwater Facilities Project Feasibility Study prepared by LSCE
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