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HomeMy WebLinkAboutStaff Report 1.A 04/11/2016 Presented to: Petaluma City Council City Staff: Dan St. John F. ASCE, Director Dan Herrera, P.E. Chelsea Thompson Kent Carothers, P.E. April 11, 2016 Introduction  1983 Urban Water Management Planning Act Updated Urban Water Management Plan (UWMP) required every 5 years Purpose: Promote water management planning by Local Utilities Assess water demand and supplies over a 20-year planning horizon Develop reliable and adequate water service for Community Adopt Contingency Plan of Addressing Drought or Emergency Curtailments in Water Supply 2015 UWMP California Senate Bill X7-7 (SB X7-7) Projected Water Demands Projected Water Supplies Water Contingency Planning Plan Timeline SB X7-7: State Water Conservation Act of 2009 Promotes increased water use efficiency First included in the 2010 UWMP 10-year baseline demand calculation based on water consumption and population from 1995-2008 Requires a 20% reduction of baseline by 2020 Based on “Gross” Gallons per Capita per Day (GPCD) using Total System Water demand, not just residential. Establishes Reduction Targets 2020 Calculated GPCD Target 2015 Interim GPCD Target Target GPCD VS. Projected /Actual GPCD Calculated 10-15 year Baseline GPCD SB X7-7 2020 Target GPCD Projected 2020 GPCD SB X7-7 2015 Interim Target GPCD Actual 2015 GPCD 177 141 128 159 111 SB X7-7 Target Consumption Projected Water Demands Joint Planning effort with Sonoma – North Marin Regional Alliance Demand Analysis prepared by Maddaus Management Inc., October 29, 2015 Projected demands based on: Projected Population Growth Industrial and Commercial Growth Passive Water Savings (Building Codes, etc.) Water Conservation Efforts (Demand Management Measures) Projected Water Demands 7,000 7,500 8,000 8,500 9,000 9,500 10,000 10,500 11,000 11,500 12,000 2020 2025 2030 2035 2040 WA T E R D E M A N D (AF Y ) YEAR Gross Water Demand With Passive Savings With Water Conservation With Potable Offset Projected Water Demands Current and Projected Demands for Potable Water (Acre-Feet per Year) 2015 2020 2025 2030 2035 2040 2015 UWMP Projected Water Demand 6,746 8,398 8,693 8,956 9,277 9,623 2010 UWMP Projected Water Demand 10,627 10,112 10,580 11,047 11,515 N/A NOTES: Current Demands from City billing records. Projected demands based on Maddaus Report for individual account types to match billing record info . Projected demands include passive savings (Plumbing Code, etc.), and Water Conservation efforts. Demand projections do not include Distribution System Losses. City of Petaluma Water Supplies Surface Water provided by Sonoma County Water Agency Sonoma County Water Agency Restructured (Wholesale Water) Agreement – 2006 Deliver Up to 13,400 AFY Analysis of 3 year dry period, multiple drought scenario included in 2010 UWMP. Conclusion: Sufficient storage with no impacts to City water supply SCWA analyzing single year and 4-year drought scenario. To be included in 2015 UWMP. City of Petaluma Water Supplies Recycled Water produced at Ellis Creek Water Recycling Facility Urban Offset: Reduces urban irrigation demand of potable water Remainder delivered to agricultural customers outside of City limits City of Petaluma Water Supplies Groundwater –City Owned Well Groundwater supply considered de minimis Annual use of wells necessary to assure reliability of equipment Goal: Meet 40% Local Supply during emergency or drought Water Supply Facility Needs No expansion of existing water supply, storage, or transmission facilities are required to assure reliable surface water supply during normal or drought scenarios Expanded “purple pipe” recycled water system to increase urban potable offset up to 657 Acre-Feet/Year by 2040 •6% of future total water demand Upgrade and expansion of Well Field required to meet Drought and Emergency Contingency of 40% Local Supply per conditions of Restructured Agreement Water Shortage Contingency Plan What is it? Component of the City’s Urban Water Management Plan Addresses water shortages that result from droughts, natural disasters, or reduced deliveries from the Water Agency Provides guidelines to managing water demand in the event of a water supply disruption or severe drought Describes four water shortage stages, and actions taken at each stage Stages based on water supply conditions and demand reduction goals Updated periodically, most recently in 2015. Water Shortage Contingency Plan How is it enforced? City Council adopts resolution to implement water shortage stage appropriate for a water supply shortage caused by natural disaster, delivery curtailment, or as otherwise mandated by the State Water shortage stage - determined by demand reduction target required to meet severity of water supply condition Water shortage stage mandates are in addition to the City’s year-round Water Conservation Regulations (15.17 PMC) and voluntary programs (e.g. Mulch Madness) Water Conservation Regulations Year -round prohibitions (PMC 15.17): •Using a hose not equipped with a hose-end shutoff nozzle •Unfixed leaks •Irrigation that allows runoff of water or over-spray •Swimming pool and spa covers required •Using water for non-recycling water features •Using water for single pass evaporative cooling systems •Using water for new non-recirculating conveyor car wash systems •Using water for non-recirculating industrial clothes washing systems •Dedicated irrigation accounts exceeding the allocated water budget by more than 20 percent. Water Conservation Regulations Recommended adds to year-round mandates: Outdoor irrigation during and within 48 hours after measureable rainfall is prohibited Outdoor pools and spas must be covered during non-business hours or while not in use Evaluating requirement property inspection upon sale of single- or multi-family accounts and require appliance and fixture upgrades to water efficient units Increased water conservation in landscaping and limited turf in new development through updated Landscape water use efficiency standards (PMC) Implement water shortage rate structure in City’s Water Rate Resolution Water Conservation Programs  Year -round water conservation programs: •Public Information and Outreach •Customer Support: Water-Wise House Calls Mulch Madness Program Professional irrigation audit for irrigation customers Leak detection •Rebate and Incentive Programs: HE Toilet and HE Clothes Washer Rebates Commercial Rebates Smart Irrigation Controller Rebate Low Flow Shower Heads/ Plumbing Fixtures “Cash for Grass” Available Through Existing State Program Water Conservation Programs Recommended Year-Round Programs: •Modify on-line bill pay system to require customers to acknowledge water conservation requirements before paying bill Water Shortage Contingency Plan Stage One Mandates Current Proposed Reduction Target 15% Reduction Target Up to 15% Hose-end shut off nozzles Included in Water Conservation Regulations Water served on request only in restaurants  (same as “Current”) Pavement wash down prohibited  Customer Demand Reduction Plan Moved to Stage 2 Water Shortage Contingency Plan Stage Two Mandates Current Proposed Reduction Target 15% - 25% Reduction Target Up to 25% All Stage 1 Mandates, plus:  No ornamental fountains  No filling new private swimming pools Moved to Stage Three Irrigation only 7 pm to 8 am, 3-days per week.  No irrigation on public street medians  Recycled water for dust control or one truck per day of potable water  Vehicle washing at commercial facilities only Irrigation within 48 hours of rainfall Moved to Water Conservation Regs Hotels/Motels provide guests option of daily laundered linen  Implement water shortage rate structure as adopted by City’s Water Rate Resolution Customer Demand Reduction Plan (See Next Slide) Customer Demand Reduction Plan City identifies high water users based on billing records City creates a Customer Demand Reduction Plan Customers allowed to meet reduction in two ways: Achieve percent reduction based on Stage implemented from prior year’s usage for same billing period Meet Conditions of Customer Demand Reduction Plan Customer s not meeting Reduction Plan goals will be subject to progressive enforcement actions Water Shortage Contingency Plan Stage Three Mandates Current Proposed Reduction Target 25% - 35% Reduction Target Up to 35% All Stage 1 & 2 Mandates, plus:  No water using landscape installation  No filling or topping off private pools  No operating ornamental fountains Already in Stage Two, does not need to be listed again in Stage Three No landscape irrigation except food gardens and mature trees Water Shortage Contingency Plan Stage Four Mandates Current Proposed Reduction Target 35+% Reduction Target Up to 50+% All Stage 1, 2 & 3 Mandates, plus:  No residential or commercial landscape irrigation  Public irrigation only for playing fields and mature trees or shrubs  Project Timeline for UWMP 2016 Submit to State: July 1, 2016 Public Hearing and City Council Adoption: •Preliminary Date of May 16, 2016 Available for Public Review: •Preliminary Date of April 15, 2016 •City Hall, Field Office and online. Public Outreach: Beginning April 12: •Argus Courier advertisements - print and online •Social Media Questions and Comments