HomeMy WebLinkAboutSS2 - Runoff Reduction ProgramCITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Study Session Item No. ss2
January 9, 2007
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Public Works Department
Robert Stein, PE
949 -644 -3311 or rstein @ciity.newport- beach.ca.us
SUBJECT: RUNOFF REDUCTION PROGRAM: WEATHER -BASED IRRIGATION
CONTROLLERS AND IRRIGATION & LANDSCAPE ORDINANCE
DISCUSSION:.
Top -ten reasons the City is interested in reducing over - irrigation:
1. Eliminates dry- weather transports of pollutants into the creeks, bay, harbor, and
ocean that pose a health risk to beachgoers.
2. Protects slopes from slippage and failure due to oversaturation.
3. Prevents flooding of basements and garages.
4. Prevents mold from growing on walls and foundations.
5. Eliminates dry- weather transport of pollutants that threaten aquatic species and
birds.
6. Saves money.
7. Eliminates dry- weather transport of fertilizers and pesticides, which promote growth
of exotic and invasive plants.
8. Prevents saturation of the street subgrade that makes streets prone to failure.
9. Eliminates the necessity of building expensive, end-of -the pipe treatment facilities.
10. Allows the City to be in control of our resources without undue influence by outside
agencies.
11. Saves money.
Okay, eleven reasons. Clearly the City and our property owners have a stake in
reducing over - irrigation. Staff has prepared an outline for a Runoff Reduction Program
for the Newport Coast Watershed area as Attachment 1. A key element of the program
is encouraging property owners to install the so- called "SmarTimeC irrigation
controllers. The SmarTimer irrigation controller calculates an efficient irrigation
schedule based on weather, plant type, soil type, ground slope, exposure to sunlight,
and types of sprinklers installed to each irrigation valve. The controller receives daily
weather data and changes irrigation schedules accordingly. As opposed to
overwatering that rots roots and ties up nutrients in the soils, plants given the optimum
amount of water improve in health and appearance.
Five irrigation systems that use the smart water application technology (SWAT) have
been certified by Irrigation Association of America: Hydropoint Weather Trac, Toro
Runoff Reduction Program: Weather -Based Irrigation Controllers and Irrigation & Landscape Ordinance
January 9, 2007
Page 2
Intelli- Sense, Irritrol Smart Dial, Evapo-Transpi ration (ET) Water Systems and Rainbird
ET Manager. Photos of the first three controllers are attached as Attachment 2. There
are twelve other controllers on the market that have not been SWAT certified. To date,
the Hydropointe Weather Trac is the only controller that has been tested and shown to
reduce runoff. As of July 1, 2007, MWD has stated that only SWAT certified controllers
will be eligible for rebate and by 2010, only SWAT certified controllers will be allowed
for sale in California.
The SmarTimer residential controller operates in a similar way to the City's central
control irrigation system. At Bob Henry Park, General Services uses a more
sophisticated, commercial grade ET controller system that utilizes an on -site weather
gauge that communicates with a central computer which in turn programs the on -site
controller. General Services has a ten -year program to bring parkways, medians and
parks under its central irrigation control program and forecasts water savings of up to
20 percent. Further water savings are expected with preventive maintenance and as
nozzles and drip systems are upgraded.
Encouraging property owners to switch to a weather -based irrigation controller, which
precisely measures out water; is an easy recommendation to make, especially as the
City has grant funds to initially subsidize these installations. With technical advice and
funding assistance for the US Bureau of Reclamation, Municipal.Water District of
Orange County (MWDOC) and Irvine Ranch Water District (IRWD), the City hopes to
have 500 to 600 controllers installed city -wide, especially in the Buck Gully watershed
area, within the next six months. Hydropointe Data Systems has the contract to install
the controllers and perform irrigation calibration tests. Verifications of a properly
installed system are performed by MWDOC contractors and City staff. Hydropointe will
monitor water usage —we expect to see reductions in consumption of 20 to 40 percent.
This data should be a strong marketing tool for encouraging other residents to convert
to smart irrigation controllers.
Recent studies funded by the City regarding dry- weather flows in the Newport Coast
watershed show that over - watering leads to infiltration which increases the level of the
groundwater which then exfiltrates into canyon streambeds. During the dry season, 17
million gallons per month flow out of the mouth of Buck Gully. In an alarming new
development, the dry- weather flows from Los Trancos Canyon and Muddy Creek have
jumped eight -fold in two years from one million gallons per month to eight million
gallons per month as depicted in Attachment 3.
These flows are diverted to the Orange County Sanitation District (OCSD) sewer main
via IRWD facilities. (See Attachment 4 for map.) OCSD has permitted a maximum flow
diversion of 8.7 million gallons per month. IRWD forecasts that this limit -will be reached
by Summer 2007 at which time OCSD may require that the diversions be shut down
and the dry- weather runoff allowed to flow across the Crystal Cove beaches. (The
diversion was in fact shut down for one day last summer at the request of OCSD
because the dry- weather flows were so high.) OCSD could opt to accept the larger
flows; however, OCSD could then institute a diversion fee that IRWD might pass on to
residents.
Runoff Reduction Program: Weather -Based Irrigatlon Controllers and Irrigation & Landscape Ordinance
January 9, 2007
Page 3
Why the dramatic increase in Los Trancos creek flows? In the last four years, several
new subdivisions have been built adjacent to this sub - watershed. City and IRWD staffs
met with Orange County Resources & Development Management Department staff on
December 18 to discuss the emerging problem. Thus far, County staff is not promoting
the use of the smart controllers and are not requiring the smart irrigation controllers to
be installed by the developers. Additionally, property, owners are not being encouraged
to install water - thrifty plants or to install irrigation systems that are appropriate and
efficient. This is especially frustrating as many new property owners are now installing
irrigation systems in preparation for landscaping. Except for a few custom homes, all
building permits have been issued and measures to limit over - watering apparently
cannot be conditioned.
It is not clear that the County can be held accountable for the increased flows in Los
Trancos and Muddy Creek. Once all of the parcels within a Planning Area are built out
and occupied, the Planning Area's planning authority is turned over to the City (once
relevant maps and planning documents physically transfer as well). At that time, the
City becomes responsible for working with the property owners to reduce over - irrigation.
One promising option the City is now pursuing is working directly with the developers.
John Laing Homes has already agreed to install Smartimer controllers in the Crystal
Cove tract (Phase 3). Future discussions with The Irvine Company and other
developers are pending.
A complimentary element of the Runoff Reduction Program for the Newport Coast
watershed is developing and promulgating an irrigation and landscape ordinance. A
draft ordinance has been prepared by an interdepartmental committee composed of
staff from Fire, Planning, Building, General Services, Water Quality and Public Works.
Final edits are expected to be completed by February for internal city staff review.
Upon completion of the review, the draft could be presented to Council at Study
Session. This irrigation and landscape ordinance will be the first of its kind in the state.
Implementation of the ordinance could be enhanced if the draft ordinance was reviewed
with key community organizations, including the Council's Coastal /Bay Water Quality
Committee, prior to completing the final ordinance for Council consideration. While the
ordinance is focused on particular concerns in Newport Coast, the ordinance could be
readily extended to other parts of the City.
Environmental Review: Not applicable.
Prepared by:
Robert Stein, P.E.
Principal Civil Engineer
Submitted
phe . Badum
Public Works Director
Attachments:
1. Runoff Reduction Program for Buck Gully.
2. Photos of three controllers
3. Diversion Flow Chart from Los Trancos Canyon and Muddy Creek
4. Map of Los Trancos and Muddy Creek Diversion points
City of Newport Beach
Buck Gully Runoff Reduction Program
August 7, 2006
Prepared for:
STATE WATER RESOURCES
CONTROL BOARD
Agreement Number 02- 204 -558
Submitted by:
City of Newport Beach
3300 Newport Boulevard
Newport Beach, California 92663
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080706.doc
ATTACHMENT 1
City of Newport Beach
Runoff Reduction Program
August 7, 2006
Over the past year, the City has conducted a number of investigations to identify
likely sources of dry- weather flows in Buck Gully and other canyons in Newport
Coast. Preliminary results indicate that canyon runoff is due to excessive
irrigation which flows directly to the canyons or infiltrates into the surface and
subsequently exfiltrates into the canyon creeks. The City believes the most
effective way to reduce the excessive irrigation is by promoting the use of
weather -based irrigation controllers and fixing faulty irrigation systems. The City
believes the best way to promote this program is through regular meetings
among City staff, IRWD, the Irvine Company, golf course management, the
boards of Community Associations, management companies, and the landscape
maintenance companies that work for the City and area HOAs. This central
focus will be supplemented by:
• Source identification and runoff monitoring
• Water usage monitoring
• Meetings with landscapers, garden suppliers and landscape architects
• Community newsletters
• City ordinance on irrigation and landscaping
• Building Permit requirements
• Tiered water rates
• Inspection and enforcement
Any new program that involves cooperation between multiple City departments,
outside agencies and the community needs some time to find the common
ground and to gain momentum. The underlying strategy is find ways to move
forward and work toward gaining acceptance by all parties.
Source Identification
The Newport Coast Flow and Water Quality Assessment prepared by Weston
Solutions (2006) found that most of the flow in Buck Gully is due to exfiltration of
groundwater into the creek. The report did note significant surface flows
emanating from the Pelican Hill Community Association.
The Newport Seepage Study prepared by Todd Engineers (2006) confirmed that
groundwater storage has dramatically increased with urban development in the
Newport Coast and adjacent properties causing a mounding of groundwater
which exfiltrates into the canyons.
Weather Based Evapo- transpiration Controllers
The City conducted a successful pilot program from December 2005 to March
2006 that offered `smart', weather -based irrigation controllers and installation free
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080706.doc
to residents in high irrigation runoff areas. The entire pilot funding was quickly
used as residents called with great interest to participate. Some 70 homes were
retrofit with smart controllers tested specifically to reduce urban runoff. At the
same time, many property owners repaired irrigation systems. The residential
program also stimulated a number of Community Associations to install smart
controllers in common areas and upgrade irrigation systems. Initial monitoring
indicates that water usage for these properties is dropping.
Over the next 30 months, the City intends to work with IRWD to install another
400 -500 controllers in the Newport Coast Area, especially for those properties
that drain to Buck Gully. Additionally, the City will sponsor.a program for property
owners to install water - efficient MP rotator nozzles on irrigation systems. City
staff will meet with community associations to discuss the program and will hire a
consultant to facilitate the installation of the controllers.
Meetings with Landscapers, Garden Suppliers and Landscape Architects
Staff will hold information meetings with landscapers, landscaping maintenance
companies, and HOA property management companies to discuss the use of
smart irrigation controllers. The meetings will serve as a forum to discuss
landscaper concerns or problems.
Staff will meet with garden suppliers and look for ways to encourage suppliers to
stock colorful and water thrifty plants (e.g. using City- sponsored specials).
Staff will host a meeting with local landscape architects to discuss how water
saving features can be designed into gardens and landscapes.
Monitoring
The City will adjust its monitoring program to more closely identify sources in
Buck Gully and Morning Canyon to help target staff time toward eliminating these.
sources. The monitoring program will also help the City document reductions in
runoff as irrigation controllers are installed.
The City has approved a contract to install three flow meters including a flow
meter at a Pelican Hill storm drain that outlets to Buck Gully. Flow meters will
continuously measure surface runoff for the next 4 months.
The City and IRWD are coordinating to share water usage records to track
monthly water usage.
The City will consider a new position in its Code and Water Quality Enforcement
Division to promote water conservation and look for evidence of overwatering in
City landscaped areas, HOA common areas and private property.
As part of the ASBS Protection Planning Program, the City will continue to
measure flows at the mouth of Buck Gully and Morning Canyon.
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080706.doc
Education
Evidence of over water usage will be used to help target an education program
advising property owners on the need and benefits of conserving irrigation water.
The program will give examples of landscaping practices to minimize water runoff
into the canyons.
Staff will contribute articles on runoff reduction to community association
newsletters. Additionally, the City will send out informational newsletters to
Newport Coast residents, property management companies, and landscaping
maintenance firms advising on operation and maintenance of irrigation
controllers, monitoring overall water usage, inviting property owners to specialty
events at Roger's gardens, tips on landscaping and providing information on
canyon water quality.
Water usage maps will be posted on the City web site and then periodically
updated to show how progress is being made to reduce water.
The City will look toward rewarding "5- Star" behavior by finding gardens and
technologies (like homes with permeable pavers, etc) and highlight them in ads
in the Daily Pilot, in water bill inserts and on the City's Website.
The City will encourage a competitive spirit by tracking water usage over time for
each.HOA and posting the information on the City's Website and other local
news outlets.
The City's Website will also have features on drought- resistant wildflowers,
shrubs and trees as well as recommendations for appropriate plant food,
fertilizers and herbicides. The City will coordinate with local nurseries and
hardware stores to encourage stocking of appropriate plant materials.
City Ordinances
The City has prepared a draft landscaping and irrigation ordinance for the canyon
areas in Newport Coast. A companion User's Manual has also been prepared in
draft form. The ordinance and user's manual emphasizes the use of drought
tolerant (fire resistive) plant material so that irrigation systems are used less with
less chance of over watering. It is expected that after a 6 to 9 month review
period, City Council will adopt the ordinance and user's manual.
Building Permits
The City has modified its Building Permit requirements to require a water quality
management plan for new and remodel developments. The water quality
management plan requires retention of irrigation water (through the use of
infiltration, detention, and French drains) or filtration prior to discharge.
Additional permit requirements will be considered including the requirement for
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080706.doc
more sophisticated irrigation controllers for new development and major
remodels.
Tiered Water Usage Rate Structure
The City has begun studying how a tiered water usage rate structure might
reward water conservation. It is expected tiered water rates could be in place in
three years.
Enforcement
As this program evolves, the Code and Water Quality Enforcement Division will
be inspecting the properties for compliance and will initially issue environmental
advisory citations. Repeat offenders will be cited and fined.
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Become a Zero Runoff
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Most landscapes are overwatered, leading directly to the runoff
that contaminates our ocean, beach and bay. Now you can become
a zero runoff home with a free smart controller proven to reduce
Program funded by:
runoff, overwatering and water bills.
Smart controllers adjust Irrigation based on plant needs and daily
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local weather. So your plants get precisely the water they need each
day for optimal health.
smart controller limited ....Request your FREE WeoMcTRAK
smart can[rolkrtoday.
Call 1.800.362.87 ]e, ea 1. 121. Ask for Sharon Connelly.
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1. Call Center Management
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• Controller reserved
2. Site Visit
• Irrigation system inspection
• Controller installed and programmed
• Precipitation test at each valve
3. Follow up visit by third part to verify working system
4. 2 -year service warranty
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Irrigation /Landscape Ordinance
•'• Dry Weather Runoff Reduction
Ordinance for Coastal Canyons and
Coastal Bluffs
•'• Landscape & Irrigation Guidance Manual
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Landscape & Irrigation
Guidance Manual
•'• Irrigation Design
•:• Equipment Selection /Installation
❖ Irrigation Maintenance and Management
❖ Plant Selection
•'• Planting Design
® ®• Plant Installation and Maintenance
•:• Grading and Drainage
❖ Best Management Practices
❖ Appendices
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Newport Coast Irrigation and Landscape Ordinances
and Fuel Modification Program
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Process for Administering the
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Newport Coast Irrigation and Landscape
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Newport Beach WeatherTRAK Cost Breakdown - 18/24
ITEM
TOTAL
18 - 24 Station Controller
$515.00
User Manual and Collateral
included
Additional Keys, electrical cords antennas as needed
included
2 Years ET and Customer Service
$168.00
Tax HW Only)
$42.49
Shippinq & Handling
7.73
Hardware and ET Service Total
$725.49
Marketing Creative (avg per unit)
$10.71
Phone (avg per install)
$11.88
Remove, Install, Precip, Program, Train
$330.00
Field Paperwork, Reporting and Rebate Docs
$36.00
Follow Up Visits
$110.00
Customer Service Tracking and Reporting
$5.00
Program Services Total
$503.59
G&A on marketing, field services and reporting
$88.13
G &A Total
$88.13
ACTUAL TOTAL PER UNIT PRICE
$1,317.21
City of Newport Beach Price
$1,170
pwr Legend
Coastal Channels
�'•�a' Watershed Boundary
t#%' City Boundary
)astal Channel Names:
- Buck Gully Creek
- Morning Canyon Channel
- Pelican Point Creek
- Pelican Point Middle Creek
- Pelican Point Waterfall Creek
- Los Trances Creek (Crystal Cove Creek)
- Muddy Creek
- Moro Canyon
"ASBS" Newport Beach Marine Life Refuge
"ASBS" Irvine Coast Marine Life Refuqe
Newport Coast
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PIN # 404
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Components
Weather Station
*Accurately measures, wind, rain, temperature, solar
■ + radiation, and relative humidity; then computes watering
programs and communicates with Central Computer
*Prevents watering when it is raining or in high wind
conditions
entral Computer
*Adjust irrigation schedules on field satellite
controllers on a daily basis using information
from Weather Station
*Receives alerts and alarms to help ensure
that repairs are made in a timely manner
Central Irrigation Control System
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Components
aSatellite Controller
-Communicates with Central Computer and sends watering
program to individual stations in the field
l01 *Processes alarms, which provide station and/or master valve
shut down and program advance as required
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Flow Sensor
-Communicates with Satellite Controller and
monitor irrigation systems for proper flow rate
*Prevents property damage due to water main break
Master Valve
*Opens at the start of the watering cycle and shuts down
after the cycle is complete
-Shuts down systems that are malfunctioning
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Estimated Annual Water Savings
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le- Ensign View Park
•2005 Usage: 1,355,250 Gallons
•2006 Usage: 928,500 Gallons
Difference: 426,750 Gallons (31.50%)
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Water Cost Per Acre
With
Central System
$1,200
Current Savings (203 Acres)- $60,900
Without
Central System
$1,500
Proiected Savings (403 Acres)- $120,900
Central Irrigation Control System
undin
CLP_ ending- Parks, Facilities, Medians/ Roadsides
M,_� f 10 Year Program; $45,000 per year
Winding Converts Approximately 40 Acres Per Year
/o Currently Converted
P° Funding- Newport Coast
ear 3 of 5 Year Program; $40,000 per year
-year Program will convert 40%
•FY 2008 Budget
*Request Additional Program Funding
Central Irrigation Control System