CC 2016-10-11_12b Water Use Restriction Measures and Options Presentation
Water USE RESTRICTION MEASURES AND OPTOINS
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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.
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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
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SECTION 1
WATER DEMAND AND SUPPLY UPDATE
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exceptional Drought CONTINUES on the central coast
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LOPEZ RESERVIOR HISTORIC STORAGE GRAPH
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Lopez reservoir storage projections
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Low reservoir response plan
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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
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Northern cities management area
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City of Arroyo Grande
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annual SMGB Pumping – arroyo Grande
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Arroyo Grande residents are conserving!
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Supplemental water supply projects
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City of Arroyo Grande
Pismo Beach Regional Groundwater Sustainability Project
SSLOCSD Recycled Water Facilities Planning Study
Diablo Desalination
Temporary Water purchases
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Section 1 Questions?
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SECTION 2
MANDATORY WATER USE RESTRICTIONS
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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.
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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.)
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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.
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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
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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.
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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
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ADDITIONAL STAGE 1 RESTRICTION RECOMMENDATIONS
Prohibition on private vehicle washing
PROJECTED WATER SAVINGS: Unknown. Less than 1AF per year.
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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
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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
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Section 2 Questions?
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SECTION 3
IMMEDIATELY RECOMMENDED
WATER CONSERVATION MANDATES
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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.
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ANNUAL WATER CONSUPMTION BY ACCOUNT TYPE
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EXISTING PARKWAY MEDIAN & LANDSCAPE TURF
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EXISTING PARKWAY MEDIAN & LANDSCAPE TURF
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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.
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Section 3 Questions?
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section 4
WATER CONSERVATION INCENTIVE PROGRAM OPTIONS
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WATER CONSERVATION INCENTIVE PROGRAM OPTIONS
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WATER CONSERVATION INCENTIVE PROGRAM budget
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Additional WATER CONSERVATION
INCENTIVE PROGRAM options
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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.
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Section 4 Questions?
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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.
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Questions?
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