Loading...
CC 2016-10-11_12b Water Use Restriction Measures and Options Presentation Water USE RESTRICTION MEASURES AND OPTOINS 1 Staff recommendation It is recommended the City Council: Receive and file the updated water supply and demand report; Approve triggers and additional water use restrictions for the next step of Stage 1 water emergency restrictions and direct staff to bring back an implementing Resolution; Direct staff to bring back a draft Resolution revising the Stage 1 water emergency restrictions to increase mandatory conservation for dedicated irrigation meters from 25% to 50%; and Approve a revised funding plan for water conservation programming and appropriate an additional $8,450 from the Water Neutralization Fund, as proposed. 2 2 DROUGHT RESPONSE TIMELINE MAY 2011 CITY COUNCIL ESTABLISHES PERMANENT WATER USE RESTRICTIONS January 2014 Governor declares drought emergency JUNE 2014 CITY COUNCIL APPROVED WATER SUPPLY STRATEGY AND Water CONSERVATION MEASURES February 2015 City council adopts ordinance no. 669 - water shortage contingency plan APRIL 2015 governor orders MANDATORY WATER RESTRICTIONS MAY 5, 2015 STATE water resources control board requires 28% water use reduction for City of Arroyo Grande May 26, 2015 City council DECLARes A STAGE 1 WATER SHORTAGE EMERGENCY AND ADOPTs AN URGENCY ORDINANCE SEPTEMBER 2016 COUNCIL DIRECTS STAFF TO PREPARE REPORT WITH RECOMMENDED TRIGGERS FOR NEXT STEP OF WATER RESTICTIONS AND WATER CONSERVATION OPTIONS 3 SECTION 1 WATER DEMAND AND SUPPLY UPDATE 4 exceptional Drought CONTINUES on the central coast 5 6 LOPEZ RESERVIOR HISTORIC STORAGE GRAPH 7 Lopez reservoir storage projections 8 Low reservoir response plan 9 10 Lopez Reservoir - last 5 water years inflow 2015-2016 = 3,078.36 AF 2014-2015 = 1,326.93 AF 2013-2014 = 1,444.19 AF 2012-2013 = 1,895.23 AF 2011-2012 = 4,690.85 AF 5 YR. AVERAGE= 2,227.11 AFY 11 12 Northern cities management area 13 City of Arroyo Grande 13 14 15 annual SMGB Pumping – arroyo Grande 16 Arroyo Grande residents are conserving! 17 Supplemental water supply projects 18 City of Arroyo Grande Pismo Beach Regional Groundwater Sustainability Project SSLOCSD Recycled Water Facilities Planning Study Diablo Desalination Temporary Water purchases 18 19 20 Section 1 Questions? 21 SECTION 2 MANDATORY WATER USE RESTRICTIONS 22 Emergency Water use restriction PREVIOUS TRIGGERS Declaration Of A Stage 2 Water Supply Condition Per The City’s Existing Ordinance (This could occur based upon a threat to a local water supply, water delivery system, state mandated reductions, or a combination); Reduction of Lopez Supply of 35%; or The SMGWB continually falls below the Deep Well Index Trigger Level of 7.5 feet in conjunction with Lopez supply reduction of 20% or indications of sea water intrusion are detected. 23 RECOMMENDED MODIFIED TRIGGERS FOR ADDITIONAL WATER USE RESTRICTIONS Interruption to local water deliveries, water delivery system or State mandated reductions. Lopez Reservoir level at or below 10,000 AF. Six quarterly continuous monitoring events of Sentry well water level readings in the SMGWB below the deep well index trigger level of 7.5 feet in conjunction with Lopez supply reduction of 20% or indications of sea water intrusion are detected. (Based on the opinion of the NCMA Hydrogeological consulting firm, GSI, relative to the potential impacts with sustained low groundwater levels.) 24 BUILDING RESTRICTION (moratorium) options Existing planning permit applications deemed complete as of the date of a resolution imposing a building moratorium would be processed and building permits issued for those projects. New planning permit applications requiring new water meters not otherwise deemed complete by the date of a resolution modifying stage 1 restrictions will be accepted and processed; however, building permits for those projects would not be issued until stage 1 is declared over. New commercial/retail use of existing buildings, or redevelopment of existing buildings will be allowed, but only such that water demand will be less than or equal to the existing water demand. 25 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS 1. Building moratorium and restrictions 2. One day per week outdoor watering for residential properties 3. Prohibition on private vehicle washing 4. Further reduce overall irrigation of City-owned non- sports field turf areas to 25% of the 2015 use 5. Increase the mandatory water use reductions for residential water customers by 5% for each of the three water rate tiers 26 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS Building moratorium and restrictions PROJECTED WATER SAVINGS: Development projects currently in the entitlement process would account for an increase of approximately 35 AF/year or less than 2% of the anticipated 2,300 AF citywide annual water demand. 27 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS One day per week outdoor watering for residential properties PROJECTED WATER SAVINGS: Annual Demand- 2,200 AFY X 80%= 1,760 afy Residential use- 1,760 Afy X .45%= 792 AFY Outdoor irrigation- 792 afy x 10%= 7.9 afy 28 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS Prohibition on private vehicle washing PROJECTED WATER SAVINGS: Unknown. Less than 1AF per year. 29 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS Further reduce overall irrigation of City-owned non- sports field turf areas to 25% of the 2015 use PROJECTED WATER SAVINGS: 7.5 afy 30 ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS Increase the mandatory water use reductions for residential water customers by 5% for each of the three water rate tiers PROJECTED WATER SAVINGS: Annual Demand- 2,200 AFY X 80%= 1,760 afy Residential use- 1,760 Afy X .5%= 88 afy 31 Section 2 Questions? 32 SECTION 3 IMMEDIATELY RECOMMENDED WATER CONSERVATION MANDATES 33 DEDICATED IRRIGTION METER 50% WATER USE REDUCTION MANDATE existing Stage 1 Water Shortage Emergency MANDATES 25% MANDATORY WATER USE REDUCTION FOR DEDICATED IRRIGATION METERS. AN INCREASE TO 50% WILL GENERATE AN ANNUAL WATER SAVINGS OF APPROXIMATELY 40 afY. 34 34 ANNUAL WATER CONSUPMTION BY ACCOUNT TYPE 35 EXISTING PARKWAY MEDIAN & LANDSCAPE TURF 36 EXISTING PARKWAY MEDIAN & LANDSCAPE TURF 37 DEDICATED IRRIGTION METER 50% WATER USE REDUCTION MANDATE Staff recommends that the City Council amend the existing Stage 1 Water Shortage Emergency to include this additional water conservation measure. This action would require modifications to Resolution 4659 and would need to be brought back to the City Council at a future meeting if so directed. 38 38 Section 3 Questions? 39 section 4 WATER CONSERVATION INCENTIVE PROGRAM OPTIONS 40 WATER CONSERVATION INCENTIVE PROGRAM OPTIONS 41 WATER CONSERVATION INCENTIVE PROGRAM budget 42 Additional WATER CONSERVATION INCENTIVE PROGRAM options 43 WATER FUND ACCOUNTS In-Lieu Water Neutralization Fund This fund accounts for these funds collected by developers and is used towards the City’s water conservation efforts. Water Availability Fund These charges are restricted for the sole purpose of expanding water supply such as desalination plant, recycled water, scalping plant, etc. Water Fund This fund is used to account for the activities associated with the transmission and distribution of potable water by the City to its users.  Water Facility Fund This fund is to be used for capital improvement projects in the City. 44 Section 4 Questions? 45 Staff recommendation It is recommended the City Council: Receive and file the updated water supply and demand report; Approve triggers and additional water use restrictions for the next step of Stage 1 water emergency restrictions and direct staff to bring back an implementing Resolution; Direct staff to bring back a draft Resolution revising the Stage 1 water emergency restrictions to increase mandatory conservation for dedicated irrigation meters from 25% to 50%; and Approve a revised funding plan for water conservation programming and appropriate an additional $8,450 from the Water Neutralization Fund, as proposed. 46 46 Questions? 47