2009/03/24 City Council Resolution 2009-27RESOLUTION NO. 2009-27
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ROHNERT PARK
ADOPTING A SUPPLEMENT TO THE CITY OF ROHNERT PARK
2005 URBAN WATER MANAGEMENT PLAN AND
DIRECTING FILING WITH THE DEPARTMENT OF WATER RESOURCES
WHEREAS, the Urban Water Management Planning Act (Act), California Water Code
Section 10610 et. seq. requires that every urban water supplier directly or indirectly supplying
water for municipal purposes to more than 3,000 customers prepare an Urban Water
Management Plan (UWMP), the primary objective of which is to plan for the efficient
management of the water supply;
WHEREAS, as the City of Rohnert Park (the City) is an urban water supplier within the
meaning of the Act, the City prepared an UWMP (the City of Rohnert Park 2005 Urban Water
Management Plan) to meet the requirements of the Act, in accordance with the guidelines
developed by the California Department of Water Resources (the Department);
WHEREAS, the City Council of the City of Rohnert Park adopted the City of Rohnert
Park 2005 Urban Water Management Plan on August 28, 2007, and directed staff to file the
document with the Department, all in compliance with the Act;
WHEREAS, during the course of its review, the Department requested that the City
provide additional information regarding its water shortage contingency plan;
WHEREAS, the City and its consultants have prepared a draft of the requested
information and confirmed that it addresses the questions raised by the Department;
WHEREAS, the Supplement to City of Rohnert Park 2005 Urban Water Management
Plan has been made available for public review since February 27, 2009, in compliance with the
requirements of the Act;
WHEREAS, the City Council conducted a duly noticed public hearing on March 24,
2009, to receive oral and written comments upon the Supplement to City of Rohnert Park 2005
Urban Water Management Plan;
WHEREAS, the City Council has reviewed the Supplement to City of Rohnert Park
2005 Urban Water Management Plan, City staff reports and presentations, and the oral and
written comments received; and
WHEREAS, pursuant to the provisions of the Act, the preparation and adoption of the
Supplement to City of Rohnert Park 2005 Urban Water Management Plan is exempt from the
California Environmental Quality Act.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Rohnert
Park that it does hereby find, determine and declare as follows:
1. All of the above recitals are true and correct;
2. The Supplement to City of Rohnert Park 2005 Urban Water Management Plan is adopted.
BE IT FURTHER RESOLVED that the City staff is hereby authorized and directed to
make the appropriate filings with the Department in accordance with the requirements of the Act.
DULY AND REGULARLY ADOPTED this 24t' day of March, 2009.
ATTEST:
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CITY OF ROHNERT PARK
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BELFORTE: AYE CALLINAN: AYE MACKENZIE: AYE STAFFORD: AYE BREEZE: AYE
AYES: (5) NOES: (0) ABSENT: (0) ABSTAIN: (0)
CITY OF ROHNERT PARK
SUPPLEMENT TO
2005 URBAN WATER MANAGEMENT PLAN
January 2009
Prepared by:
Winzler & Kelly Consulting Engineers
495 Tesconi Circle, Santa Rosa, CA 95404
(707) 523 -1010
`This is a draft report and is not intended to be a final representation of the work done or recommendations made by Winkler Kelly.
It should not be relied upon; consult the final report "
TABLE OF CONTENTS
1.0 INTRODUCTION & PURPOSE ............................................................ ............................... 1
2.0 INTER- AGENCY COORDINATION ................................................... ............................... 2
3.0 REVIEW AND IMPLEMENTATION OF THE 2000 UWMP ............. ............................... 3
4.0 WATER SHORTAGE CONTINGENCY PLAN ................................... ............................... 4
4.1
Actions in Response to Water Supply Shortages (Water Code 10632(a)) .............
4
4.2
Minimum Water Supply during the Next Three Years (Water Code 10632(b)) ....
8
4.3
Catastrophic Supply Interruption Plan (Water Code 10632(c)) .............................
9
4.4
Prohibitions, Penalties and Consumption Reduction (Water Code 10632(d) -(f))
.. 9
4.5
Effect on Revenues and Expenditures (Water Code 10632 (g)) ...........................
10
4.6
Water Shortage Contingency Ordinance (Water Code 10632(h)) ........................
12
4.7
Mechanisms for Determining Actual Reductions (Water Code 10632(i)) ...........
12
Appendix - Water Shortage Contingency Plan Update
'This is a draft report and is not intended to be a final representation of the work done or recommendations made by Win.Zkr & Kelly.
It should not be plied upon; consult the final report."
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page ii
List of Tables 3
Table 3 -1 Summary of Review of the 2000 UWMP and Implementation Schedule
Table 4 -1 Evidence of Supply Reliability and Redundancy
5
Table 4 -2 Evidence of Supply Flexibility — Reductions in Agency Supply 5
Table 4 -3 Evidence of Supply Flexibility — Reductions in Groundwater Supply 6
Table 4-4 Evidence of Supply Flexibility - Reductions in Recycled Water Supply 7
Table 4 -5 Reductions in All Water Supplies 7
Table 4 -6 (DWR Table 27) Consumption Reduction Methods 8
Table 4 -7 (DWR Table 25) Preparation Actions for a Catastrophe 9
Table 4 -8 (DWR Table 26) Mandatory Prohibitions 9
Table 4 -9 (DWR 28) Enforcement Methods 10
Table 4 -10 Water Rate Schedule 10
Table 4 -11 Effect of Reduced Water Sales of Total Revenue
11
Table 4 -12 Effect of Reduced Supply on Revenues and Expenditures 11
`This is a draft report and is not intended to be a final repirsentation of the work done or recommendations made by Winder & Kelly.
It should not be relied upon; consult the final report. 11
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 1
1.0 INTRODUCTION & PURPOSE
On August 28, 2007, the City of Rohnert Park (City) adopted its 2005 Urban Water Management
Plan (2005 UWMP) in accordance with California Water Code Division 6, Part 2.6, Sections
10610 through 10657 (the Urban Water Management Planning Act, hereinafter Act). The City
provides municipal service to over 3,000 customers and meets the definition an urban water
supplier as outlined in the Act. The adopted 2005 UWMP was then forwarded to the Department
of Water Resources (DWR) in accordance with the requirements of the Act.
During its review of the City's 2005 UWMP, DWR requested additional clarification and /or
supplement information about several items in the 2005 UWMP. Specifically DWR requested:
1. Clarification on whether or not the City provided the reliability section of the 2005
UWMP to the County (Water Code Section 10635(b));
2. Clarification on whether or not the City reviewed its 2000 UWMP and described any
implementation efforts undertaken in accordance with the 2000 UWMP (Water Code
Section 10643)
3. Additional information on various items related to the City's water shortage contingency
and reliability planning (Water Code Section 10632).
The purpose of this supplement is to provide the additional information requested by the DWR.
The information contained in this supplement either clarifies details initially presented in the
2005 UWMP or provides additional information that supplements the 2005 UWMP. This
supplement neither replaces nor corrects information included in the City's approved 2005
UWMP.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Pave 2
2.0 INTER - AGENCY COORDINATION
The Act requires the City to coordinate the preparation of its Plan with other appropriate
agencies in the area, including other water suppliers that share a common source, water
management agencies, and relevant public agencies. In addition, Section 10634 of the Act
specifically requires that the City provide the County with a copy of the reliability element of its
UWMP.
The City is located in Sonoma County and the Sonoma County Water Agency (the Agency) is
the regional wholesale water supplier and the lead County entity on water issues. The Agency's
Board of Directors is the Board of Supervisors of Sonoma County. The City coordinated the
preparation of its 2005 UWMP with the Agency and the Agency's other Prime Contractors. The
City has provided copies of 2005 UWMP (including the reliability element) and this supplement,
to the Agency and the other Prime Contractors. In addition, the Agency and its Prime
Contractors, including the City, meet regularly to coordinate operations and enhance reliability.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Pa -ae 3
3.0 REVIEW AND IMPLEMENTATION OF THE 2000 UWMP
In 2000, the City adopted the Urban Water Management Plan 2000 (2000 Regional UWMP), a
regional plan prepared by the Agency. While the 2000 Regional UWMP primarily discussed the
Agency's water system and planned improvements to that system, it also included
implementation elements for each of its Prime Contractors.
Table 3 -1, below, provides a summary of the implementation elements assigned to the City in the
2000 Regional UWMP and the status of the implementation efforts.
Table 3 -1 Summary of Review of 2000 Regional UWMP and Implementation Schedule
Implementation Elements
Status
Completion Date
Update Emergency Operations Plan
Complete
2005
Adopt Model Water Shortage Emergency
Ordinance
Complete
2004
Adopt Standard Consumption Reduction
Methods
Complete.
2004
Analyze Effectiveness of BMP 01
BMP is cost effective. Began
implementation in 2004
On track for
completion
Analyze Effectiveness of BMP 02
BMP is cost effective
Coverage
requirement met in
2003
Complete implementation of BMP 03
Complete
2006
-Analyze Effectiveness of BMP 04
Complete
2004
Complete Implementation of BMP 09
Began implementation in
2005
Complete Implementation of BMP 11
Complete
2004
Complete Implementation of BMP 13
Complete
2004
Com lete Im lementation of BMP 14
On -track to meet coverage requirement
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
4.0 WATER SHORTAGE CONTINGENCY PLAN
This section supplements information presented in Chapter 7.0 of the 2005 UWMP regarding the
City's Water Shortage Contingency Plan. This section provides information required by Water
Code Section 10632.
The City has adopted a Water Shortage Emergency Plan within Title 13.66 of its Municipal
Code, which was included in Appendix I of the 2005 UWMP. This Title of the Municipal Code
has recently been updated and the updated Section 13.66.050 of the Municipal Code is appended
to this Supplement.
4.1 Actions in Response to Water Supply Shortages (Water Code 10632(a))
Water Code Section 10632(a) requires a description of the actions to be undertaken by the urban
water supplier in response to water supply shortages of up to 50 %. This section also requires the
water supplier to outline the specific water supply conditions that are applicable at each stage of
action.
The City has three independent strategies for managing water supply reductions. These include:
• Supply Reliability and Redundancy
• Supply Flexibility
• Authorized Mandatory Demand Management Measures (Actions to be Taken)
Each of these strategies, including the supply reductions that can be managed as a result of these
strategies, is outlined below. When actions are required to manage the supply reductions, these
are also described.
4. 1.1 Supply Reliability and Redundancy
The City's water supply is highly reliable and redundant. The City utilizes three sources of
supply, Agency supply, groundwater and recycled water which were described in Sections 3, 4
and 5 of the 2005 UWMP. Together these supplies yield 10,249.0 AFY under all hydrologic
conditions.1
The City's demand is projected to increase from 8,316.4 AFY to 9,131.3 AFY over the course of
the planning period. Demand is less than its available supply for the duration of the planning
period, under all hydrologic conditions.
i As discussed in Section 3 of the 2005 UWMP, the City's Agency allocation is limited by diversion rights not by hydrology
which explains the high degree of reliability associated with the City's supply.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Paze 5
As a result of its water supply mix, the City can manage an 18% supply reduction early in the
planning period and 11 % supply reduction late in the planning period without requiring demand
reduction activities (although water conservation is encouraged by a range of City policies). .
Table 4 -1 illustrates the effectiveness of the reliable, redundant water supply strategy employed
by the City.
Table 4 -1 Evidence of Supply Reliability and Redundancy
4.1.2 Supply Flexibility
In addition to being reliable and redundant, the City's supply is highly flexible because each of
its three sources is independent. It is highly unlikely that a reduction in one supply source will
result in concurrent reductions in other supply sources. The potential for and effects of
reductions in each of the City's supply sources is described below.
4.1.2.1 Agency Supply
As indicated in Section 3 of the 2005 UWMP, the City's supply from the Agency is limited by
the Agency's current water rights. Because of this fact, it is highly unlikely that the City would
experience large reductions in the Agency supply under any hydrologic circumstance.
Despite the unlikely nature of reductions, Table 4 -2 illustrates the effects of a 20 %, 30% and
50% reduction in Agency supply on the City's overall supply and demand balance for the years
2010 and 2030. This table indicates that, even at the end of the planning horizon, the City can
manage up to.a 50% reduction in Agency supply with demand reductions of approximately 23 %.
Table 4 -2 Evidence of Supply Flexibility — Reductions in Agency Supply
2010 AFY
2015 AFY
2020 AFY
2025 AFY
2030 AFY
Supply totals
10,149.0
10,249.0
10,249.0
10,249.0
10,249.0
Demand totals
8,316.4
8,680.3
8,962.0
9,067.3
9,131.3
Difference
1,832.6
1,568.7
1,287.0
1,181.7
1,117.7
Difference as Percent of Supply
Shortfall that can managed without action
18.1%
15.3%
12.6%
11.5%
10.9%
4.1.2 Supply Flexibility
In addition to being reliable and redundant, the City's supply is highly flexible because each of
its three sources is independent. It is highly unlikely that a reduction in one supply source will
result in concurrent reductions in other supply sources. The potential for and effects of
reductions in each of the City's supply sources is described below.
4.1.2.1 Agency Supply
As indicated in Section 3 of the 2005 UWMP, the City's supply from the Agency is limited by
the Agency's current water rights. Because of this fact, it is highly unlikely that the City would
experience large reductions in the Agency supply under any hydrologic circumstance.
Despite the unlikely nature of reductions, Table 4 -2 illustrates the effects of a 20 %, 30% and
50% reduction in Agency supply on the City's overall supply and demand balance for the years
2010 and 2030. This table indicates that, even at the end of the planning horizon, the City can
manage up to.a 50% reduction in Agency supply with demand reductions of approximately 23 %.
Table 4 -2 Evidence of Supply Flexibility — Reductions in Agency Supply
2010 (AFY)
2030 (AFY)
200/6
30%
50%
20%
30%
1 50%
Supplies
Sonoma County Water Agency
5,097.6
4,460.4
3,186.0
5,097.6
4,460.4
3,186.0
Groundwater
2,577.0
2,577.0
2,577.0.
2,577.0
2,577.0
2,577.0
Recycled Water
1,200.0
1,200.0
1,200.0
1,300.0
1,300.0
1,300.0
Supply totals
8,874.6
8,237.4
6,963.0
8,974.6
8,337.4
7,063.0
Demand totals
(no action taken)
8,316.4
8,316.4
8,316.4
9,131.3
9,131.3
9,131.3
Difference
558.2
(79.0)
1,353.4)
(156.7)
(793.9)
(2,068.3)
Difference
(As Percent of Demand
6.7%
(1 %)
(16.3 %)
(1.7 %)
(8.7 %)
(22.6 %)
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 6
4.1.2.2 Groundwater Supply
As indicated in Section 4 of the 2005 UWMP, the City has a local groundwater management
policy. Under that policy, the City's long -term water supply planning includes no more than
2,577 AFY from groundwater. The City has groundwater pumping facilities capable of pumping
over 5,000 AFY, which indicates that the City is unlikely to experience large reductions in its
groundwater supply, even in the event of mechanical problems with one or more wells.
Despite the unlikely nature of reductions, Table 4 -3 illustrates the effects of a 20 %, 30% and
50% reduction in groundwater supply on the City's overall supply and demand balance for the
years 2010 and 2030. This table indicates that, even at the end of the planning horizon, the City
can manage up to a 50% reduction in the groundwater supply with demand reductions under 5 %.
Table 4 -3 Evidence of Supply Flexibility — Reductions in Groundwater Supply
4.1.2.3 Recycled Water Supply
As indicated in Section 5 of the City's UWMP, the City has a recycled water supply from the
Santa Rosa Subregional System. The Subregional System contracts directly with recycled water
users. The City does not retail recycled water within its service area. The Santa Rosa
Subregional System produces over 20,000 AFY of recycled water of which approximately 1,000
AFY is currently used in the City. This is planned to be expanded to 1,300 AFY. Because of the
availability of the recycled water supply, it is unlikely that the recycled water customers in the
City will experience large reductions in supply.
However, should a reduction in the recycled water supply occur, it is likely that the City will be
asked to make a water supply available to the Subregional System customers. Table 4 -4
illustrates the effects of a 20 %, 30% and 50% reduction in recycled water supply on the City's
overall supply and demand balance for the years 2010 and 2030. The table illustrates that the
City can manage reductions in the recycled water supply without the need to require specific
demand management actions.
2010 (AFY)
2030 (AFY)
20%
30%
50%
20%
30%
50%
Supplies
Sonoma County Water Agency
61372.0
6,372.0
6,372.0
6,372.0
6,372.0
6,372.0
Groundwater
2,061.6
1,803.9
1,288.5
2,061.6
1,803.9
1,288.5
Recycled Water
1,200.0
1,200.0
1,200.0
1,300.0
1,300.0
1,300.0
Supply totals
9,633.6
9,375.9
8,860.5
9,733.6
9,475.9
8,960.5
Demand totals
(no action taken)
8,316.4
8,316.4
8,316.4
9,131.3
9,131.3
9,131.3
Difference
1,317.2
1,059.5
544.1
602.3.
344.6
(170.8)
Difference
(As Percent of Demand)
15.8%
12.7%
6.5%
6.6%
3.8%
(1.9 %)
4.1.2.3 Recycled Water Supply
As indicated in Section 5 of the City's UWMP, the City has a recycled water supply from the
Santa Rosa Subregional System. The Subregional System contracts directly with recycled water
users. The City does not retail recycled water within its service area. The Santa Rosa
Subregional System produces over 20,000 AFY of recycled water of which approximately 1,000
AFY is currently used in the City. This is planned to be expanded to 1,300 AFY. Because of the
availability of the recycled water supply, it is unlikely that the recycled water customers in the
City will experience large reductions in supply.
However, should a reduction in the recycled water supply occur, it is likely that the City will be
asked to make a water supply available to the Subregional System customers. Table 4 -4
illustrates the effects of a 20 %, 30% and 50% reduction in recycled water supply on the City's
overall supply and demand balance for the years 2010 and 2030. The table illustrates that the
City can manage reductions in the recycled water supply without the need to require specific
demand management actions.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 7
Table 44 Evidence of Supply Flexibility — Reductions in Recycled Water Supply
4.1.2.4 All Supplies
In accordance with the requirements of Section 10632(a), Table 4 -5 below illustrates the impacts
of simultaneous 20 %, 30% and 50% reductions in all the City's water supplies. Because of the
diversity of the City's supplies, this is considered a highly unlikely event.
Table 4 -5 Reductions in All Water Supplies
2010 (AFY)
2030 (AFY)
20%
30%
50%
20%
30%
1 50%
Supplies
Sonoma County Water Agency
6,372.0
6,372.0
6,372.0
6,372.0
6,372.0
6,372.0
Groundwater
2,577.0
2,577.0
2,577.0
2,577.0
2,577.0
2,577.0
Recycled Water
960.0
840.0
600.0
1,040.0
910.0
650.0
Supply totals
9,909.0
9,789.0
9,549.0
9,989.0
9,859.0
9,599.0
Demand totals
(no action taken)
8,316.4
8,316.4
8,316.4
9,131.3
9,131.3
9,131.3
Difference
1,592.6
1,472.6
1,232.6
857.7
727.7
467.7
Difference
As Percent of Demand)
19.2%
17.7%
14.8%
9.4%
8.0%
5.1%
4.1.2.4 All Supplies
In accordance with the requirements of Section 10632(a), Table 4 -5 below illustrates the impacts
of simultaneous 20 %, 30% and 50% reductions in all the City's water supplies. Because of the
diversity of the City's supplies, this is considered a highly unlikely event.
Table 4 -5 Reductions in All Water Supplies
4.1.3 Description of Actions to be Taken
Although the City has a reliable, redundant and flexible water supply portfolio that allows it to
manage a range of supply cutbacks, the City Council also has the authority to declare a water
'shortage emergency. This authority is contained in Title 13.66 of the Municipal Code.
Emergencies are declared in four stages with specific reduction methods used for each stage.
Table 4 -6 summarizes the consumption reduction methods that the City has the authority to use.
2010 (AFY)
2030 (AFY)
20%
30%
50%
20%
30%
1 50%
Supplies
Sonoma County Water Agency
5,097.6
4,460.4
3,186.0
5,097.6
4,460.4
3,186.0
Groundwater
2,061.6
1,803.9
1,288.5
2,061.6
1,803.9
1,288.5
Recycled Water
960.0
840.0
600.0
1,040.0
910.0
650.0
Supply totals
8,119.2
7,104.3
5,074.5
8,199.2
7,174.3
5,124.5
Demand totals
(no action taken)
8,316.4
8,316.4
8,316.4
9,131.3
9,131.3
9,131.3
Difference
(197.2)
(1,212.1)
(3,241.9)
(932.1)
(1957.0)
(4,006.8)
Difference
As Percent of Demand)
(2.4 %)
(14.6 %)
(39.0 %) 1
(10.2 %)
(21.4 %)
(43.9 %)
4.1.3 Description of Actions to be Taken
Although the City has a reliable, redundant and flexible water supply portfolio that allows it to
manage a range of supply cutbacks, the City Council also has the authority to declare a water
'shortage emergency. This authority is contained in Title 13.66 of the Municipal Code.
Emergencies are declared in four stages with specific reduction methods used for each stage.
Table 4 -6 summarizes the consumption reduction methods that the City has the authority to use.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Paze 8
Table 4 -6 (DWR Table 27) Consumption Reduction Methods
Consumption Reduction Method
Stage 1 Voluntary 10% Reduction
Irrigation morning and evening only
Inspection/repair/adjustment of irrigation systems
Reduction in irrigation run times for weather
Reduction of irrigation run time if runoff occurs
Utilization of City information, incentives & rebates
Serve water in restaurants on request only
Stage 2 Mandatory 20% Reduction
Prohibition against filling swimming pools and using ornamental fountains
Prohibition against noncommercial vehicle washing
Prohibition against use of water from fire hydrants (except for fighting fires
Prohibition against use of water for construction dust control
Restrictions on hours for residential irrigation
20% reductions for potable water irrigation accounts
20% reductions for vehicle washing facilities
20% reductions for most non - residential land uses
Stage 3 Mandatory 30% Reduction
Prohibition against filling swimming pools and using ornamental fountains
Prohibition against noncommercial vehicle washing
Prohibition against use of water from fire hydrants (except for fighting fires
Prohibition against use of water for construction dust control
Restrictions on automatic's rinkler use in residential settings
Restrictions on new landscaping
30% reductions for potable water irrigation accounts
30% reductions for vehicle washing facilities
30% reductions for most non - residential land uses
Stage 4 Mandatory 50% Reduction
Prohibition against filling swimming pools and using ornamental fountains
Prohibition against noncommercial vehicle washing
Prohibition against use of water from fire hydrants (except for fighting fires
Prohibition against use of water for construction dust control
Restriction on new landscaping
Irrigation prohibition (exceptions for established perennial plants/trees)
Vehicle washing prohibition
50% reductions for most non - residential land uses
100% offset for new development demands
4.1.4 Summary
The ability to require specific levels of reduction (up to 50 %). coupled with the inherently robust
nature of the City's water supply effectively allows it to manage up to 50% reductions in its
combined supply sources for much of the entire planning period.
4.2 Minimum Water Supply during the Next Three Years (Water Code 10632(b))
The minimum water supply available during the next three years during a multiple year drought
is shown in Table 8 -14 of the 2005 UWMP. Because the City has based its planning on the
Agency's current water rights and because these current water rights are more restrictive than
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 9
any hydrologic condition, including the Multiple -Dry Year condition, this minimum water
supply analysis is identical to the Normal Water Year analysis.
There is no projected supply reduction under this scenario. Therefore DWR Table 24 is not
included.
4.3 Catastrophic Supply Interruption Plan (Water Code 10632(c))
In accordance with the Emergency Services Act, the City has developed an Emergency
Operation Plan (EOP). This EOP guides response to unpredicted catastrophic events that might
impact water delivery including regional power outages, earthquakes or other disasters. The EOP
outlines standard operating procedures for all levels of emergency, from minor accidents to
major disasters. The EOP has been coordinated with the Agency and neighboring water
purveyors. Table 4 -7 provides a summary of the actions included in the EOP for specific
catastrophic effects.
Table 4- 7 (DWR Table 25) Preparation Actions for a Catastrophe
Possible Catastrophe
Summary of Actions
Earthquake
Shut -off isolation valves and use of spare piping for ruptured mains
Storage supplies for service interruption
Portable and emergency generators available for City facilities
Procedures for assessing water quality, notifying ublic and disinfecting system
Flooding
Portable and emergency generators available for City facilities
Storage supplies for service interruption
Procedures for assessing water quality, notifying ublic and disinfecting system
Toxic Spills (interrupts Agency Supply)
Use of local groundwater
Procedures for assessing water quality, notifying ublic and disinfecting system
Fire
Storage supplies for fire flows
Mutual aid plans and responders identified
Portable and emergency enerators available for City facilities
Power outage or grid failure
Portable and emergency generators available for City facilities
Severe Winter Storms
Portable and emergency enerators available for City facilities
Hot Weather
Portable and emergency enerators available for City facilities
4.4 Prohibitions, Penalties and Consumption Reduction (Water Code 10632(d) -(f))
Section 13.62 of the Municipal Code specifies prohibited water uses. These are outlined in Table
4 -8 below.
Table 4- 8 (DWR Table 26) Mandatory Prohibitions
Prohibitions
Washing of sidewalks, walkways, driveways, parking lots and other hard - surfaced areas by direct hosing, except in specific
circumstances
The escape of water through breaks or leaks within the customer's plumbing or private distributions stem
Irrigation in a manner or to an extent which allows excessive runoff
Washing cars, boats, trailers or other vehicles with a hose not equipped with a shutoff nozzle
Water for single. pass evaporative cooling systems for air conditioning
Water for new non-recirculating conveyor car wash systems
Water for new non-recirculating industrial clothes washings stems
Use of potable water when recycled water of adequate quality is available
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Paze 10
Section 13.66.070 of the Municipal Code outlines the City's enforcement process which is
presented in Table 4 -9.
Table 4 - 9 (DWR Table 28) Enforcement Methods
Enforcement Methods
Personal contact with the customer
Delivery of written notice
Installation of a flow restricting device
Imposition of water waste fees
The consumption reduction methods that are authorized by the Municipal Code were previously
presented in Table 4 -6.
4.5 Effect on Revenues and Expenditures (Water Code 10632 (g))
Based on the analysis presented above, the most challenging situation for the City to manage
would be a 50% reduction in all supplies, which would require the City to employ demand
management techniques that achieved 44% reduction in water delivered. When water deliveries
are reduced, the City also experiences reduced revenue from water rates.
This reduced revenue would be balanced by some reduction in costs, since the City would be
purchasing less water from the Agency. In addition the City would have the option of deferring
planned capital expenditures and utilizing its utility system reserves. The City manages its Water
Enterprise Fund to maintain cash reserves and these operating reserves currently exceed 50% of
its annual operating costs.
In order to understand the potential impacts of supply reduction on revenues and expenditures,
the City has analyzed the effects of 20 %, 30% and 50% reductions in water delivered. For the
purpose of this analysis, FY 2006-2007 budget data was used. The City's current water rate2
includes a monthly service charge and a commodity charge. These are presented in Table 4 -10
below.
Table 4 -10 Water Rate Schedule
Monthly Service Charge Commodity Rate Charge
Residential
$15.71 $2.57/1,000 gallons
Commercial and Multifamily
%" or 1" meter
$15.71
$2.57/1,000 gallons
1 '/" meter
$25.83
$2.57/1,000 gallons
2" meter
$37.98
$2.57/1,000 gallons
3" meter
$68.34
$2.57/1,000 gallons
4" meter
$106.81
$2.57/1,000 gallons
6" meter
$208.02
$2.57/1,000 gallons
8" meter
$329.48
$2.57/1,000 gallons
2 Fiscal Year 2006 -2007 Budget
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 11
Reductions in water use will affect the revenue that the City receives from its commodity
charges, because less water will be sold. The anticipated revenue from commodity charges can
be calculated by subtracting the revenue generated from monthly service charges from the total
budgeted revenue. Table 4 -11 illustrates this calculation.
Table 4 -11 Effect of Reduced Water Sales on Total Revenue
Should the City experience a drop in revenues as a result of a water shortage emergency, it
would incur lower costs (because it would be purchasing less water from the Agency); it would
defer capital projects as necessary and use available reserves to cover operational expenses. The
effect of potential revenue reductions on overall expenditures and reserve balances is illustrated
in Table 4 -12 below.
Table 4 -12 Effect of Reduced Supply on Revenues and Expenditures
No. of
Monthly
Revenue from
Total
Budgeted
Accounts
Service
Monthly Service
Budgeted
Revenue
$2,107,313
$2,020,636
Charge*
Charge
Revenue
Subject to
$3,283,298
$2,619,868
Agency Rebates
$20,000
$20,000
Reduction
$20,000
(a)
(b)
(c)
(d)
(e)
Expenditures
a *b*12mos/ r
(d)-(c)
Residential
7500
$15.71
$1,413,900
$2,280,666 1
$866,766
Commercial /MFR
750
$106.81
$961,290
1 $4,278,445 1
$3,317,155
*Assumes average Commercial /MFR meter at the 4" rate
$2,220,313
Should the City experience a drop in revenues as a result of a water shortage emergency, it
would incur lower costs (because it would be purchasing less water from the Agency); it would
defer capital projects as necessary and use available reserves to cover operational expenses. The
effect of potential revenue reductions on overall expenditures and reserve balances is illustrated
in Table 4 -12 below.
Table 4 -12 Effect of Reduced Supply on Revenues and Expenditures
Normal
20% Reduction in
Supply*
30% Reduction in
Suppl **
50% Reduction in
Supply* **
Revenues
Residential
$2,280,666
$2,107,313
$2,020,636
$1,847,283
Commercial /MFR
$4,278,445
$3,615,014
$3,283,298
$2,619,868
Agency Rebates
$20,000
$20,000
$20,000
$20,000
Totals
$6,576,111
$5,742,327
$5,323,934
$4,487,151
Expenditures
Purchase of Water
$1,898,978
$1,519,182
$1,329,285
$949,489
Water Quality
$433,000
$433,000
$433,000
$433,000
Operations & Maintenance
$2,220,313
$2,220,313
$2,220,313
$2,220,313
Demand Management
$99,000
$99,000
$99,000
$99,000
Capital Outlay
$146,000
$146,000
$146,000
$146,000
Net Transfers
$1,579,800
$1,579,800
$1,579,800
$1,579,800
Totals
$6,377,091
$5,997,295
$5,807,398
$5,427,602
Surplus (Deficit)
$202,020
($254,968)
($483,464)
($940,451)
Reserves
Available Balance
$3,198,365
$3,198,365
$3,198,365
$3,198,365
Used to Cover Operations
$0
$254,968
$483,464
$940,451
Ending Balance
$3,198,365
$2,943,397
$2,714,901
$2,257,914
*As indicated in Table 4 -5, the City can manage a 20% reduction in supply with actions to reduce demand by
2.4 %.
**As indicated in Table 4 -5, the City can manage a 30% reduction in supply with actions to reduce demand by
approximately 14.6 %.
* * *As indicated in Table 4 -2, the City can manage a 50% reduction in supply with actions to reduce demand by
approximately 39 %.
City of Rohnert Park
Supplement to 2005 Urban Water Management Plan
Page 12
Currently, the City is able to manage even a 50% reduction in supplies with funding available
from its current reserves. However, as demands grow in the future, the City will need to take
more actions to manage supply reductions and the revenue impacts will be more severe. The
City will continue to monitor its reserves in order to assure that reserve funding remains
available to manage unanticipated reductions in demand.
4.6 Water Shortage Contingency Ordinance (Water Code 10632(h))
As noted above, the City has adopted a Water Shortage Emergency Plan which was codified by
Ordinance in Title 13.66 of the Municipal Code. This Ordinance has recently been updated and
the update is attached.
4.7 Mechanisms for Determining Actual Reductions (Water Code 10632(1))
The City's wells and Agency supply turnouts are all equipped with water meters. In addition,
each potable and recycled water customer is metered. Non - residential landscape irrigation is
metered separately from indoor use at most non - residential sites. The City reads meters on a
monthly basis and is able to document both demand reductions and a- typically high water use.
The City contacts individual customers to resolve issues related to a- typically high water use.