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City of Davis Wastewater Utility

City of Davis Wastewater Utility. October 2014 Michael Lindquist Stan Gryczko Bob Clarke. Programs. Collection system Conveyance (160 miles of pipes, 2600 MHs) Lift stations (6) Wastewater Treatment Plant (WWTP) Primary and Secondary treatment 400 acres of wetlands

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City of Davis Wastewater Utility

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  1. City of DavisWastewater Utility October 2014 Michael Lindquist Stan Gryczko Bob Clarke

  2. Programs • Collection system • Conveyance (160 miles of pipes, 2600 MHs) • Lift stations (6) • Wastewater Treatment Plant (WWTP) • Primary and Secondary treatment • 400 acres of wetlands • Green energy - co-generation and solar • Water Quality Laboratory • Wastewater, Drinking Water, • Pretreatment, Stormwater • Pretreatment Program

  3. Statistics • Service Area (# customers) • City of Davis (15,333) • El Macero (441) • North Davis Meadows (95) • Customer Base (% of customers, %revenue) • Residential (96.5%, 86%) • Commercial (3.4%, 13%) • Other (0.1%, 0.3%) • Staffing (23 FTEs) • Collections – 5, Pretreatment – 1, Maintenance – 6 Laboratory – 2, WWTP Operations – 6, Admin/Regulatory - 3

  4. Everyday Duties • Collection system • Cleaning pipes – roots, grease, blockages • Repairing breaks – laterals and main lines • Lift station preventive maintenance • Wastewater Treatment Plant (WWTP) • Treatment - Approximately 4.5 MGD • Preventative maintenance programs, reactive maintenance, environmental and regulatory activities

  5. Everyday Duties (cont’d) • Laboratory • Performs or coordinates samples • Regulatory report preparation • Pretreatment Program • Permitting, inspections, regulatory report preparation

  6. Major Capital Improvements • Collection system • Collections system ($1M/yr until 2016) • Lift station rehabilitation ($3.5M in 2015-17) • Wastewater Treatment Plant (WWTP) • Rehabilitation and Replacement (R&R) - $5.4M • Secondary and Tertiary (STI) - $85M (2012-18) • Replace ponds and overland flow fields with conventional treatment • Add tertiary treatment (filtration) • Update laboratory and ancillary facilities that support new processes • CIP Financing (pay as we go, SRF Loans)

  7. Finances • Fund Balance • Currently approximately $32,000,000 • Debt service requirements • Rate reserve • Pay-as-we-go capital improvements

  8. Existing Rate Structure • Residential monthly charges (example for SFR) • Fixed, volume*, and base charges * winter water use (WWU) is determined by measured water use in November – February. Maximum volume provision. • Commercial • Volume and base charge • Industrial – special contracts • % of revenue

  9. Existing Rate Structure (cont’d) • 5-yr rate structure and rates adopted in 2011 • Future potential increases

  10. Looking Forward • Why look at rates now? • Major capital costs and financing will be known • Next year’s increase is substantial • Provide more accurate rate information for Innovation Park developments • Major steps of Rate Study • Revenue Requirements • Cost of Service • Rate Design • System Development Fees • Financial Plan (long term)

  11. Schedule of Rate Study • Recruit Rate Study Consultant • December - January • Rate Study • January - June • Consideration of updated rates • Summer • New rate in effect in December 2015

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