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Sewer Utility Finances & Rates 64
<br /> Water & Sewer Financial Plans & Rate Studies
<br />Table S9: Cost Recovery Allocation
<br />
<br />Note: Excludes cost recovery for carryover CIP projects budgeted in prior years and Redwood City’s one‐time cash
<br />payment to SVCW in 2015/16 to help fund the City’s share of SVCW capital improvement program costs.
<br />
<br />Projected Sewer Loadings
<br />The following tables estimates the flows and loadings of each customer class based on analysis of
<br />recent winter and annual water consumption data and wastewater strength assignments for each
<br />customer class.
<br /> Residential flows per unit are based on analysis of historical winter water use data.
<br />Residential wastewater strength concentrations are based on estimates previously published
<br />by the State Water Resources Control Board (SWRCB) and are similar to wastewater strength
<br />estimates used by a number of other regional agencies. Residential wastewater strength
<br />concentrations have increased in recent years due to transition to low‐flow toilets and
<br />water‐efficient appliances, and conservation. Hence the wastewater strength
<br />concentrations used for residential sewage is estimated at the high end of the SWRCB’s
<br />typical residential range.
<br /> Non‐Residential Commercial and Institutional wastewater discharge is based on analysis of
<br />winter vs. annual metered water use. Based on the analysis, roughly 80% of non‐residential
<br />flow is estimated to return to the sewer system. Wastewater strength assignments for non‐
<br />residential customer classes are based on strength estimates previously published by the in
<br />the Revenue Program Guidelines of the SWRCB’s Policy for Implementing the State Revolving
<br />Fund for Construction of Wastewater Treatment Facilities.
<br />
<br />2016/172017/182018/193‐Year AvgFlowBODSSFlowBODSS
<br />Operating & Maintenance
<br />City Operating Expenses8,136,0008,387,0008,648,0008,920,00080.0%10.0%10.0%7,136,000892,000892,000
<br />SVCW Operating Expenses9,819,00010,179,00010,552,0009,947,00026.5%33.5%40.0%2,635,9553,332,2453,978,800__________________________________________________________________________
<br /> Subtotal17,955,00018,566,00019,200,00018,867,00051.8%22.4%25.8%9,771,9554,224,2454,870,800
<br />Debt Service
<br />SVCW Debt Service6,940,0007,211,00011,326,0008,492,33360.0%20.0%20.0%5,095,4001,698,4671,698,467__________________________________________________________________________
<br /> Subtotal6,940,000 7,211,000 11,326,000 8,492,33360.0%20.0%20.0%5,095,4001,698,4671,698,467
<br />Capital & Other Non‐Operating
<br />City Capital Projects7,000,0007,000,0007,000,0007,000,00080.0%10.0%10.0%5,600,000700,000700,000
<br />SVCW Reserve Contributions2,653,000 3,021,000 2,770,000 2,814,66760.0%20.0%20.0%1,688,800562,933562,933__________________________________________________________________________
<br /> Subtotal9,653,000 10,021,000 9,770,000 9,814,66774.3%12.9%12.9%7,288,8001,262,9331,262,933
<br />Total 34,548,00035,798,00040,296,00037,174,00059.60%19.33%21.07%22,156,1557,185,6457,832,200
<br />Annual ExpensesAllocation %Allocation $
<br />6.4.A. - Page 91
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