Resolution No. 6548189
RESOLUTION NO. 6548
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CYPRESS,
CALIFORNIA, ADOPTING THE GUIDELINES FOR IMPLEMENTATION OF
THE WATER EFFICIENT LANDSCAPE ORDINANCE.
WHEREAS, the City Council of the City of Cypress held a meeting on January 25,
2016, to consider and approve amendments to the water conservation ordinance and
zoning code in response to Governor Brown's mandated water reductions; and
WHEREAS, the City of Cypress modified its water efficient landscape ordinance
implementation guidelines to be in conformance with the mandate provisions, and
WHEREAS, the adoption of the guidelines is found to be Categorically Exempt in
accordance with the requirements of the California Environmental Quality Act; and
WHEREAS, following the City Council meeting, a motion was made to approve the
Municipal Code and Zoning Ordinance Amendments and accompanying Guidelines for
Implementation of the Water Efficient Landscape Ordinance.
NOW, THEREFORE, the City Council of the City of Cypress does hereby FIND,
RESOLVE, DETERMINE, and ORDER as follows:
(1) The City of Cypress realizes that promoting water saving practices will
help conserve water thereby minimizing the impact upon our local water supplies and
other water delivery systems: and
(2) landscape plan submittal and review has been a long standing practice in
Cypress; and
(3) Consistent with these findings, the purpose of the City's Water Efficient
Landscape Ordinance Implementation guidelines is to provide guidance for new and
reconstructed landscape projects by establishing a structure for planning, designing,
installing, maintaining and managing water efficient landscapes
NOW, THEREFORE, BE IT FURTHER RESOLVED that the City Council of the
City of Cypress DOES HEREBY ADOPT the Guidelines for Implementation of the Water
Efficient Landscape Ordinance attached hereto as Exhibit A and incorporated herein by
this reference as if set forth in full.
PASSED AND ADOPTED by the City Council of the City of Cypress, at a regular
meeting held on the 8th day of February, 2016.
MAYOR OF THE CITY'OIf CYPRESS
ATTEST:
- .sr-,
CITY CLERK OF THE CITY OF CYPRESS
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) SS
I, DENISE BASHAM, City Clerk of the City of Cypress, DO HEREBY CERTIFY
that the foregoing Resolution was duly adopted at a regular meeting of the said City
Council held on the 8th day of February, 2016, by the following roll call vote:
AYES: 5 COUNCIL MEMBERS: Berry, Johnson, Peat, Morales and Yarc
NOES: 0 COUNCIL MEMBERS: None
ABSENT: 0 COUNCIL MEMBERS: None
`= /'"L� ��_ GAL/• ,
CITY CLERK OF THE CITY OF CYPRESS
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GUIDELINES
FOR IMPLEMENTATION OF THE
CITY OF CYPRESS, CA
WATER EFFICIENT LANDSCAPE
ORDINANCE
191
TABLE OF CONTENTS
Section
Page No.
1. Purpose and Applicability 1
1.1 Purpose 1
1.2 Applicability 2
Submittal Requirements for New Landscape Installations or Landscape
Rehabilitation Projects 3
2.2 Elements of the Landscape Documentation Package 3
2.3 Water Efficient Landscape Calculations and Alternatives 5
2.4 Soil and Stormwater Management 7
2.5 Landscape Design Plan 9
2.6 Irrigation Design Plan 12
2.7 Grading Design Plan 18
2.8 Certification of Completion 18
2.9 Post - Installation Irrigation Scheduling 20
2.10 Post - Installation Landscape and Irrigation Maintenance 20
3. Provisions for Existing Landscapes 20
4. Public Education 20
Appendix A: Prescriptive Compliance Option 22
Appendix B: Certification of Landscape Design 25
Appendix C: Water Efficient Landscape Worksheet 26
Appendix D: Reference Evapotranspiration Table 28
Appendix E: Certificate of Completion 31
Appendix F: Definitions 33
Appendix G: Irrigation Plan Checklist 40
Appendix H: Inspection Affidavit 41
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1. Purpose and Applicability
1.1 Purpose
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(A) The primary purpose of these Guidelines is to provide procedural and
design guidance for project applicants proposing landscape installation or
rehabilitation projects that are subject to the requirements of the Water
Efficient Landscape Ordinance. This document is also intended for use
and reference by City staff in reviewing and approving designs and
verifying compliance with the Water Efficient Landscape Ordinance. The
general purpose of the Water Efficient Landscape Ordinance is to promote
the design, installation, and maintenance of landscaping in a manner that
conserves regional water resources by ensuring that landscaping projects
are not unduly water -needy and that irrigation systems are appropriately
designed and installed to minimize water waste.
(B) Other regulations affecting landscape design and maintenance practices
are potentially applicable and should be consulted for additional
requirements. These regulations include but may not be limited to:
(1) State of California Assembly Bill 1881;
(2) National Pollutant Discharge Elimination Permit for the Municipal
Separate Storm Sewer System;
(3) Orange County Fire Authority Regulations for Fuel Modification in
the Landscape;
(4) Water Conservation and Drought Response Regulations of the
Local Water Purveyor;
(5) Regulations of the Local Water Purveyor governing use of
Recycled Water,
(6) Zoning Code;
(7) Building Code;
(8) Specific Plans, Master Plans, General Plan, or similar land use and
planning documents; and,
(9) Conditions of approval for a specific project.
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1.2Applicability
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(A) The Water Efficient Landscape Ordinance and these Guidelines apply to
all of the following landscape projects:
(1)
New landscape projects with an aggregate landscape area equal to
or greater than 500 square feet, requiring a building or landscape
permit, plan check or design review;
(2) Rehabilitated landscape projects with an aggregate landscape area
equal to or greater than 2,500 square feet, requiring a building or
landscape permit, plan check or design review;
(3)
New or rehabilitated landscape projects with an aggregate
landscape area of 2,500 square feet or less may comply with the
performance requirements of this ordinance or conform to the
prescriptive measures contained in Appendix A ;
(4) New or rehabilitated projects using treated or untreated greywater
or rainwater capture on site, any lot or parcels within the project
that has less than 2,500 square feet of landscape area and meets
the lot or parcel's landscape water requirement (Estimated Total
Water Use) entirely with the treated or untreated greywater or
though stored rainwater capture on site is subject only to Appendix
A Section (5).
(B) The requirements of the Guidelines may be partially or wholly waived, at
the discretion of the City or its designee, for landscape rehabilitation
projects that are limited to replacement plantings with equal or lower water
needs and where the irrigation system is found to be designed, operable
and programmed consistent with minimizing water waste in accordance
with local water purveyor regulations.
(C) Unless otherwise determined by the City, the Water Efficient Landscape
Ordinance and these Guidelines do not apply to:
(1) Registered local, state, or federal historical sites;
(2) Ecological restoration projects that do not require a permanent
irrigation system;
(3) Mined -land reclamation projects that do not require a permanent
irrigation system; or
(4) Plant collections, as part of botanical gardens, and arboretums
open to the public.
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2. Submittal Requirements for New Landscape Installations or Landscape
Rehabilitation Projects
(A) Discretionary approval is typically required for landscape projects that are
subject to site plan reviews, or where a variance from a local building code
is requested, or other procedural processes apply such that standard or
special conditions of approval may be required by the City. Discretionary
projects with conditions of approval may be approved administratively by
City staff, or acted on formally by the City Council, or other jurisdictional
authority. A typical standard condition of approval reads:
"Landscaping for the project shall be designed to comply with the
City's Water Efficient Landscape Ordinance and with the
Guidelines for Implementation of the Water Efficient Landscape
Ordinance."
Landscape or water features that typically require a ministerial permit
(i.e., a building, plumbing, electrical, or other similar permit), thereby
triggering compliance with the Water Efficient Landscape Ordinance
requirements independently of the need for discretionary approval
include, but are not limited to, swimming pools, fountains or ponds,
retaining walls, and overhead trellises.
2.2 Elements of the Landscape Documentation Package
(A) A Landscape Documentation Package is required to be submitted by the
project applicant for review and approval prior to the issuance of
ministerial permits for landscape or water features by the City, and prior to
start of construction. Unless otherwise directed by the City, the
Landscape Documentation Package shall include the following elements
either on plan sheets or supplemental pages as directed by the City:
(1) Project Information, including, but not limited to, the following:
(a) Date;
(b) Project name;
(c) Project address, parcel, and /or lot number(s);
(d) Total landscape area (square feet) and rehabilitated
landscape area (if applicable);
(e) Project type (e.g., new, rehabilitated, public, private,
cemetery, homeowner - installed);
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(f) Water supply type (e.g., potable, recycled, or well) and
identification of the local retail water purveyor if the project
applicant is not served by a private well;
(g)
Checklist or index of all documents in the Landscape
Documentation Package;
(h) Project contacts, including contact information for the project
applicant and property owner,
(i) Certification of Design in accordance with Exhibit A of these
Guidelines that includes a landscape professional's
professional stamp, as applicable, signature, contact
information (including email and telephone number), license
number, and date, certifying the statement that "The design
of this project complies with the requirements of the Citys
Water Efficient Landscape Ordinance" and shall bear the
signature of the landscape professional as required by law;
and,
(j) Any other information the City deems relevant for
determining whether the landscape project complies with the
Water Efficient Landscape Ordinance and these Guidelines.
(2) Maximum Applied Water Allowance (MAWA) and Estimated
Applied Water Use (EAWU) expressed as annual totals including,
but not limited to, the following:
(3)
(a) Water Efficient Landscape Worksheet (optional at discretion
of the City) for the landscape project;
(b) Hydrozone information table (optional at the discretion of the
City) for the landscape project; and,
(c) Water budget calculations (optional at the discretion of the
City) for the landscape project.
A soil management report or specifications, or specification
provision requiring soil testing and amendment recommendations
and implementation to be accomplished during construction of the
landscape project.
(4) A landscape design plan for the landscape project.
(5) An irrigation design plan for the landscape project.
(6) A grading design plan, unless grading information is included in the
landscape design plan for the landscape project or unless the
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landscape project is limited to replacement planting and /or irrigation
to rehabilitate an existing landscape area.
2.3Water Efficient Landscape Calculations and Alternatives
(A) The project applicant shall provide the calculated Maximum Applied Water
Allowance (MAWA) and Estimated Applied Water Use (EAWU) for the
landscape area as part of the Landscape Documentation Package
submittal to the City. The MAWA and EAWU shall be calculated based on
completing the Water Efficient Landscape Worksheets (in accordance with
the sample worksheets in Appendix C) which contain information on the
plant factor, irrigation method, irrigation efficiency and area associated
with each hydrozone. Calculations are then made to show that the
evapotranspiration adjustment factor (ETAF) for the landscape project
does not exceed a factor of 0.55 for residential areas and 0.45 for non-
residential areas, exclusive of Special Landscape Areas. The ETAF for a
landscape project is based on the plant factors and irrigation methods
selected. The Maximum Applied Water Allowance is calculated based on
the maximum ETAF allowed (0.55 for residential areas and 0.45 for non-
residential areas) and expressed as annual gallons required. The EAWU
is calculated based on the plants used and irrigation method selected for
the landscape design.
(B) The EAWU allowable for the landscape area shall not exceed the MAWA.
The MAWA shall be calculated using an evapotranspiration adjustment
factor (ETAF) of 0.55 for residential areas and 0.45 for non - residential
areas, except for the portion of the MAWA applicable to any Special
Landscape Areas within the landscape project, which shall be calculated
using an ETAF of 1.0. Where the design of the landscape area can
otherwise be shown to be equivalently water - efficient, the project applicant
may submit alternative or abbreviated information supporting the
demonstration that the annual EAWU is less than the MAWA, at the
discretion of and for the review and approval of the local agency.
(C) Water budget calculations shall adhere to the following requirements:
(1)
The MAWA shall be calculated using the Water Efficient Landscape
Worksheets and equation presented in Appendix C.
(2) The EAWU shall be calculated using the Water Efficient Landscape
Worksheet and equations presented in Appendix C.
(3) For the calculation of the MAWA and EAWU, a project applicant
shall use the ETo values from the closest location listed the
Reference Evapotranspiration Table in Appendix D. For
geographic areas not covered in Appendix D, data from other
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cities, or zip codes, located nearby in the same reference
evapotranspiration zone may be used.
(4) For calculation of the EAWU, the plant water use factor shall be
determined as appropriate to the project location from the Water
Use Efficiency of Landscape Species (WUCOLS) Species
Evaluation List or from horticultural researchers with academic
institutions or professional associations as approved by the
California Department of water Resources (DWR). The plant factor
ranges from 0 to 0.1 for very low water use plants, 0.1 to 0.3 for low
water use plants, 0.4 to 0.6 for moderate water use plants, and 0.7
to 1.0 for high water use plants.
(5)
For calculating the EAWU, the plant water use factor shall be
determined for each valve hydrozone based on the highest- water-
use plant species within the zone. The plant factor for each
hydrozone may be required to be further refined as a "landscape
coefficient," according to protocols defined in detail in the WUCOLS
document, to reflect planting density and microclimate effects on
water need at the option of the project applicant or the City.
(6) For calculation of the EAWU, the area of a water feature shall be
defined as a high water use hydrozone with a plant factor of 1.0.
(7)
For calculation of the EAWU, a temporarily irrigated hydrozone
area, such as an area of highly drought - tolerant native plants that
are not intended to be irrigated after they are fully established, shall
be defined as a very low water use hydrozone with a plant factor of
0.1
(8) For calculation of the MAWA, the ETAF for Special Landscape
Areas (SLA) shall be set at 1.0. For calculation of the EAWU, the
ETAF for SLA shall be calculated as the SLA plant factor divided by
the SLA irrigation efficiency factor.
(9)
Irrigation efficiency (IE) of the irrigation heads used within each
hydrozone shall be assumed to be as follows, unless otherwise
indicated by the irrigation equipment manufacturer's specifications
or demonstrated by the project applicant:
Irrigation Method
DULQ
DULH*
EU
1E**
Spray nozzles
65%
79%
71%
High efficiency spray
nozzles
70%
82%
73%
Multi stream /Multi
trajectory rotary (MSMT)
nozzles
75%
85%
76%
Stream rotor nozzle
70%
82%
73%
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Microspray
75%
85%
76%
Bubblers
85%
77%
Drip emitter
90%
81%
Subsurface drip
90%
81%
*DULH = .386 + (.614)(DULQ)
** IE (spray) = (DULH)(IME)
** IE (drip) = Emission uniformity (EU)(IME)
(D) The Maximum Applied Water Allowance shall adhere to the following
requirements:
(1)
The Maximum Applied Water Allowance shall be calculated using
the equation presented in Appendix C. The reference
evapotranspiration (ETo) values used for this calculation are from
the Reference Evapotranspiration Table in Appendix D and are for
planning purposes only. For actual irrigation scheduling, automatic
irrigation controllers are required and shall use current ETo data,
such as from the California Irrigation Management Information
System (CIMIS), other equivalent data, or soil moisture sensor
data.
2.4Soi1 and Stormwater Management
(A) All planted landscape areas are required to have friable soil to maximize
retention and infiltration. On engineered slopes, only amended planting
holes need meet this requirement.
(B) In order to reduce runoff and encourage healthy plant growth, a soil
management report shall be completed by the project applicant, or his /her
designee, as follows:
(1) Submit soil samples to a certified agronomic soils laboratory for
analysis and recommendations.
(a)
Soil sampling shall be conducted in accordance with
laboratory protocol, including protocols regarding adequate
sampling depth for the intended plants.
(b) The soil analysis may include, but is not limited to:
1. soil texture;
2. infiltration rate determined by laboratory test or soil
texture infiltration rate table;
3. pH;
4. total soluble salts;
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5. sodium;
6. percent organic matter; and,
7. recommendations.
(2) In projects with multiple landscape installations (i.e. production
home developments or common interest developments that are
installing landscaping) a soil sampling rate of 1 in 7 lots or
approximately 15% will satisfy this requirement; evenly disbursed
throughout the development. Large landscape projects shall
sample at a rate equivalent to 1 in 7 lots or approximately 15%
landscape area. The project applicant, or his /her designee, shall
comply with one of the following:
(a) If significant mass grading is not planned, the soil analysis
report shall be submitted to the local agency as part of the
Landscape Documentation Package; or
(b) If significant mass grading is planned, the soil analysis report
shall be submitted to the City as part of the Certification of
Completion.
(c) The soil analysis report shall be made available, in a timely
manner, to the professionals preparing the landscape design
plans and irrigation design plans in order to make any
necessary adjustments to the design plans.
(d) The project applicant, or his /her designee, shall submit
documentation verifying implementation of soil analysis
report recommendations to the local agency with the
Certification of Completion.
(C) It is recommended that storm water projects incorporate any of the
following elements to improve on -site stormwater and dry weather runoff
capture and use:
(1) Grade impervious surfaces, such as driveways, during construction
to drain into vegetated areas.
(2) Minimize the area of impervious surfaces such as paved areas,
roof, and concrete driveways.
(3)
Incorporate pervious or porous surfaces (e.g. gravel, permeable
pavers or blocks, pervious or porous concrete) that minimize runoff.
(4) Direct runoff from paved surfaces and roof areas into planting beds
or landscape areas to maximize site water capture and reuse.
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(5)
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Incorporate rain gardens, cisterns, and other rain harvesting or
catchment systems.
(6) Incorporate infiltration beds, swales, basins, and drywells to capture
stormwater and dry weather runoff and increase percolation into the
soil.
(7)
Consider constructed wetlands and ponds that retain water,
equalize excess flow, and filter pollutants.
2.5 Landscape Design Plan
(A) For the efficient use of water, a landscape shall be carefully designed and
planned for the intended function of the project. The following design
criteria shall be submitted as part of the Landscape Documentation
Package.
(1) Plant Material
(a) Any plant may be selected for the landscape area provided
the EAWU in the landscape area does not exceed the
MAWA. Methods to achieve water efficiency shall include
one or more of the following:
i. Protection and preservation of non-
invasive water - conserving plant, tree and turf
species;
ii. Selection of water - conserving plant, tree
and turf species;
iii. Selection of plants based on local
climate suitability, disease and pest
resistance;
iv. Selection of trees based on applicable
City and local tree ordinances or tree shading
guidelines, and size at maturity as appropriate
for the planting area; and,
v. Selection of plants from local and
regional landscape program plant lists.
vi. Selection of plants from local Fuel
Modification Plan Guidelines.
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(B) Each hydrozone shall have plant materials with similar water use; with the
exception of hydrozones with plants of mixed water use, as specified in
Section 2.6(A)(2)(D) of these Guidelines.
(C) Plants shall be selected and planted appropriately based upon their
adaptability to the climatic, geologic, and topographical conditions of the
project site. Methods to achieve water efficiency shall include one or more
of the following:
(1)
Use the Sunset Western Climate Zone System, or equivalent
generally accepted models, which takes into account temperature,
humidity, elevation, terrain, latitude, and varying degrees of
continental and marine influence on local climate;
(2) Recognize the horticultural attributes of plants (i.e., mature plant
size, invasive surface roots) to minimize damage to property or
infrastructure (e.g., buildings, sidewalks, and power lines); allow for
adequate soil volume for healthy root growth; and,
(3)
Consider the solar orientation for plant placement to maximize
summer shade and winter solar gain.
(D) Turf is discouraged on slopes greater than 25% where the toe of the slope
is adjacent to an impermeable hardscape and where 25% means 1 foot of
vertical elevation change for every 4 feet of horizontal length (rise divided
by run x 100 = slope percent).
(E) High water use plants, characterized by a plant factor of 0.7 to 1.0, are
prohibited in street medians.
(F) A landscape design plan for projects in fire -prone areas and fuel
modification zones shall comply with requirements of the local Fire
Authority, where applicable. Refer to the local Fuel Modification Plan
Guidelines. When conflicts between water conservation and fire safety
design elements exist, the fire safety requirements shall have priority.
(G) The use of invasive plant species plant species, such as those listed by
the California Invasive Plat Council, is strongly discouraged.
(H) The architectural guidelines of a common interest development, which
include community apartment projects, condominiums, planned
developments, and stock cooperatives, shall not prohibit or include
conditions that have the effect of prohibiting the use of water efficient plant
species as a group.
(1) Water Features
(a) Recirculating water systems shall be used for water features.
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(b) Where available and consistent with public health guidelines,
recycled water shall be used as a source for decorative
water features.
(c) The surface area of a water feature shall be included in the
high water use hydrozone area of the water budget
calculation.
(d) Pool and spa covers are highly recommended.
(2) Soil Preparation, Mulch and Amendments
(a) Prior to planting of any materials, compacted soils shall be
transformed to a friable condition. On engineered slopes,
only amended planting holes need to meet this requirement.
(b) Soil amendments shall be incorporated according to the
recommendations of the soil report and what is appropriate
for plants selected.
(c) For landscape installations, compost at a rate of a minimum
of four cubic yards per 1,000 square feet of permeable area
shall be incorporated to a depth of six inches into the soil.
Soils with greater than 6% organic matter in the top 6 inches
of soil are exempt from adding compost and tilling.
(d) A minimum three inch (3 ") layer of mulch shall be applied on
all exposed soil surfaces of planting areas except in turf
areas, creeping or rooting groundcovers, or direct seeding
applications where mulch is contraindicated. To provide
habitat for beneficial insects and other wildlife, up to 5% of
the landscape area may be left without mulch. Designated
insect habitat must be included in the landscape design plan
as such.
(e) Stabilizing mulching products shall be used on slopes that
meet current engineering standards such as those detailed
in the USDA/USAID Low - Volume Roads Engineering Best
Management Practices Field Guide.
(f)
(9)
The mulching portion of the seed /mulch slurry in hydro -
seeded applications shall meet the mulching requirement.
Organic mulch materials made from recycled or post -
consumer shall take precedence over inorganic materials or
virgin forest products unless the recycled post- consumer
organic products are not locally available. Organic mulches
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are not required where prohibited by local fuel Modification
Plan Guidelines or other applicable local ordinances.
(I) The landscape design plan, at a minimum, shall:
(1)
Delineate and label each hydrozone by number, letter, or other
method;
(2) Identify each hydrozone as low, moderate, high water, or mixed
water use. Temporarily irrigated areas of the landscape area shall
be included in the low water use hydrozone for the water budget
calculation;
(3) Identify recreational areas;
(4) Identify areas permanently and solely dedicated to edible plants;
(5) Identify areas irrigated with recycled water,
(6) Identify type of mulch and application depth;
(7) Identify soil amendments, type, and quantity;
(8) Identify type and surface area of water features;
(9) Identify hardscapes (pervious and non - pervious);
(10) Identify location and installation details, and 24 -hour retention or
infiltration capacity of any applicable storm water best management
practices that encourage on -site retention and infiltration of storm
water. Project applicants shall refer to the local agency or regional
Water Quality Control Board for information on any applicable
stormwater technical requirements. Storm water best management
practices are encouraged in the landscape design plan and
examples are provided in Section 2.4(C).
(11) Identify any applicable rain harvesting or catchment technologies
(e.g., rain gardens, cisterns, etc.);
(12) Contain the following statement: "I have complied with the criteria of
the Water Efficient Landscape Ordinance and applied them for the
efficient use of water in the landscape design plan;" and
(13) Bear the signature of a California - licensed landscape professional.
2.6lrrigation Design Plan
(A) This section applies to landscape areas requiring permanent irrigation, not
areas that require temporary irrigation solely for the plant establishment
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period. For the efficient use of water, an irrigation system shall meet all
the requirements listed in this section and the manufacturer's
recommendations. The irrigation system and its related components shall
be planned and designed to allow for proper installation, management,
and maintenance. An irrigation design plan meeting the following design
criteria shall be submitted as part of the Landscape Documentation
Package.
(1) System
(a) Landscape water meters, defined as either a dedicated
water service meter or private sub meter, shall be installed
for all non - residential irrigated landscapes of 1,000 sq. ft. but
not more than 5,000 sq. ft. (the level at which Water Code
535 applies) and residential irrigated landscapes of 5,000 sq.
ft. or greater. A landscape water meter may be either:
1. A customer service meter dedicated to landscape use
provided by the local water purveyor; or
2. A privately owned meter or sub meter.
(b) Automatic irrigation controllers utilizing either
evapotranspiration or soil moisture sensor data with non-
volatile memory shall be required for irrigation scheduling in
all irrigation systems, recommending U.S. EPA WaterSense
labeled devices as applicable.
(c) Sensors (rain, freeze, wind, etc.), either integral or auxiliary,
that suspend or alter irrigation operation during unfavorable
weather conditions shall be required on all irrigation
systems, as appropriate for local climatic conditions.
Irrigation should be avoided during windy or freezing
weather or during rain.
(d) If the water pressure is below or exceeds the recommended
pressure of the specified irrigation devices, the installation of
a pressure regulating device is required to ensure that the
dynamic pressure at each emission device is within the
manufacturer's recommended pressure range for optimal
performance.
1. If the static pressure is above or below the required
dynamic pressure of the irrigation system, pressure -
regulating devices such as inline pressure regulators,
booster pumps, or other devices shall be installed to
meet the required dynamic pressure of the irrigation
system.
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2. Static water pressure, dynamic or operating pressure,
and flow reading of the water supply shall be measured
at the point of connection. These pressure and flow
measurements shall be conducted at the design stage. If
the measurements are not available at the design stage,
the measurements shall be conducted at installation.
(e) Backflow prevention devices shall be required to protect the
water supply from contamination by the irrigation system. A
project applicant shall refer to the applicable City code (i.e.,
public health) for additional backflow prevention
requirements.
(f) A master shutoff valve shall be as close as possible to the
point of connection and is required on all projects; with the
exception for landscapes that make use of technologies that
allow for the individual control of sprinklers that are
individually pressurized in a system equipped with low
pressure shut down features.
(g)
Flow sensors that detect high flow conditions created by
system damage or malfunction are required for all non-
residential landscapes and residential landscapes of 5,000
sq. ft. or larger. The flow sensor must be in combination with
a master shut -off valve.
(h) Manual isolation valves (such as a gate valve, ball valve, or
butterfly valve) shall be required downstream of the point of
connection of the water supply to minimize water loss in
case of an emergency (such as a main line break) or routine
repair.
(i)
The irrigation system shall be designed to prevent runoff, low
head drainage, overspray, or other similar conditions where
irrigation water flows onto non - targeted areas, such as
adjacent property, non - irrigated areas, hardscapes,
roadways, or structures.
0) Relevant information from the soil management plan, such
as soil type and infiltration rate, shall be utilized when
designing irrigation systems.
(k) The design of the irrigation system shall conform to the
hydrozones of the landscape design plan.
(1) All irrigation emission devices must meet the requirements
set in the American National Standards Institute (ANSI)
standard, American Society of Agricultural and Biological
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(m)
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Engineers' /International Code Council's (ASABE /ICC) 802-
2014 "Landscape Irrigation Sprinkler and Emitter Standard,
All Sprinkler heads installed in the landscape must document
a distribution uniformity low quarter of 0.65 or higher using
the protocol defined in ASBE /ICC 802 -2014.
Average irrigation efficiency (IE) for the project shall be
determined in accordance with the EAWU calculation sheet
in Appendix C. Unless otherwise indicated by the irrigation
equipment manufacturer's specifications or demonstrated by
the project applicant, the irrigation efficiency of the irrigation
heads used within each hydrozone shall as listed in Section
2.3(C)(9).
(n) It is highly recommended that the project applicant or local
agency inquire with the local water purveyor about peak
water operating demands (on the water supply system) or
water restrictions that may impact the effectiveness of the
irrigation system.
(o) In mulched planting areas, the use of low volume irrigation
(drip or low volume overhead irrigation) is required to
maximize water infiltration into the root zone; with the
exception of areas with fuel modification requirements and /or
those that require plant establishment to comply with local
grading ordinances.
(p) Sprinkler heads and other emission devices shall have
matched precipitation rates, unless otherwise directed by the
manufacturer's recommendations.
(q) Head to head coverage is recommended. However, sprinkler
spacing shall be designed to achieve the highest possible
distribution uniformity using the manufacturer's
recommendations.
(r) Swing joint components are required on all sprinklers subject
to damage that are adjacent to hardscapes or in high traffic
areas of turf.
(s) Check valves or anti -drain valves are required on all
sprinkler heads where low point drainage could occur.
(t) Areas less than ten (10) feet in width in any direction shall be
irrigated with subsurface irrigation or other means that
produces no runoff or overspray.
15
207
(u) Overhead irrigation shall not be permitted within 24 inches of
any non - permeable surface. Allowable irrigation within the
setback from non - permeable surfaces may include drip, drip
line, or other low flow non -spray technology. The setback
area may be planted or unplanted. The surfacing of the
setback may be mulch, gravel, or other porous material.
These restrictions may be modified if:
1. the landscape area is adjacent to permeable surfacing
and no runoff occurs; or
2. the adjacent non - permeable surfaces are designed and
constructed to drain entirely to landscaping; or
3. the irrigation designer for the landscape project specifies
an alternative design or technology, as part of the
Landscape Documentation Package, and clearly
demonstrates strict adherence to the irrigation system
design criteria in Section 2.6 (A)(1) hereof. Prevention of
overspray and runoff must be confirmed during an
irrigation audit.
4. slopes greater than 25% shall not be irrigated with an
irrigation system with a application rate exceeding 0.75
inches per hour. This restriction may be modified if the
landscape designer of the landscape project specifies an
alternative design or technology, as part of the
Landscape Documentation Package, and clearly
demonstrates no runoff or erosion will occur. Prevention
of runoff and erosion must be confirmed during the
irrigation audit.
(2) Hydrozone
(a) Each valve shall irrigate a hydrozone with similar site, slope,
sun exposure, soil conditions, and plant materials with
similar water use.
(b) Sprinkler heads and other emission devices shall be
selected based on what is appropriate for the plant type
within that hydrozone.
(c) Where feasible, trees shall be placed on separate valves
from shrubs, groundcovers, and turf to facilitate the
appropriate irrigation of trees. The mature size and extent of
the root zone shall be considered when designing irrigation
for the tree.
16
(d) Individual hydrozones that mix plants of moderate and low
water use or moderate and high water use may be allowed
if:
(g)
1. The plant factor calculation is based on the proportions of
the respective plant water uses and their respective plant
factors; or
2. The plant factor of the higher water using plant is used
for the calculations.
Individual hydrozones that mix high and low water use plants
shall not be permitted.
On the landscape design plan and irrigation design plan,
hydrozone areas shall be designated by number, letter, or
other designation. On the irrigation design plan, designate
the areas irrigated by each valve and assign a number to
each valve.
The irrigation design plan, at a minimum, shall contain:
1. the location and size of separate water meters for
landscape;
2. the location, type, and size of all components of the
irrigation system, including controllers, main and lateral
lines, valves, sprinkler heads, moisture sensing devices,
rain switches, quick couplers, pressure regulators, and
backflow prevention devices;
3. static water pressure at the point of connection to the
public water supply;
4. flow rate (gallons per minute), application rate (inches per
hour), and design operating pressure (pressure per
square inch) for each station;
5. irrigation schedule parameters necessary to program
smart timers specified in the landscape design;
6. the following statement: "I have complied with the criteria
of the Water Efficient Landscape Ordinance and applied
them accordingly for the efficient use of water in the
irrigation design plan;" and
7. the signature of a California - licensed landscape
professional.
17
208
2.7Grading Design Plan
209
(A) For the efficient use of water, grading of a landscape project site shall be
designed to minimize soil erosion, runoff, and water waste. Finished
grading configuration of the landscape area, including pads, slopes,
drainage, post- construction erosion control, and storm water control Best
Management Practices, as applicable, shall be shown on the Landscape
Plan unless this information is fully included in separate Grading Plans for
the project, or unless the project is limited to replacement planting and /or
irrigation to rehabilitate an existing landscape area.
(B) The project applicant shall submit a landscape grading plan that indicates
finished configurations and elevations of the landscape area including:
(1) Height of graded slopes;
(2) Drainage patterns;
(3) Pad elevations;
(4) Finish grade; and,
(5) Storm water retention improvements, if applicable.
(C) To prevent excessive erosion and runoff, it is highly recommended that
the project applicant:
(1)
Grade so that all irrigation and normal rainfall remains within
property lines and does not drain on to non - permeable hardscapes;
(2) Avoid disruption of natural drainage patterns and undisturbed soil;
and,
(3)
Avoid soil compaction in landscape areas.
(D) The Grading Design Plan shall contain the following statement: "I have
complied with the criteria of the ordinance and applied them accordingly
for the efficient use of water in the grading design plan" and shall bear the
signature of the landscape professional, as required by law.
2.8Certification of Completion
(A) Landscape project installation shall not proceed until the Landscape
Documentation Package has been approved by the City and any
ministerial permits required are issued.
18
(B) The project applicant shall notify the City at the beginning of the
installation work and at intervals, as necessary, for the duration of the
landscape project work to schedule all required inspections.
(C) Certification of Completion of the landscape project shall be obtained
through a Certificate of Use and Occupancy or a Permit Final. The
requirements for the Final Inspection and Permit Closure include submittal
of:
(1)
A Landscape Installation Certificate of Completion in the form
included as Appendix E of these Guidelines, which shall include:
(i) certification by a landscape professional that the landscape
project has been installed per the approved Landscape
Documentation Package; and, (ii) the following statement: "The
landscaping has been installed in substantial conformance to the
design plans, and complies with the provisions of the Water
Efficient Landscape Ordinance for the efficient use of water in the
landscape."
(a)
Where there have been significant changes (as deemed by
the local permitting agency) made in the field during
construction, these "as- built" or record drawings shall be
included with the certificate.
(b) A diagram of the irrigation plan showing hydrozones shall be
kept with the irrigation controller for subsequent
management purposes.
(2) Documentation of the irrigation scheduling parameters used to set
the controller(s);
(3)
An irrigation audit report from a local agency landscape irrigation
auditor or third party certified landscape irrigation auditor,
documentation of enrollment in regional or local water purveyor's
water conservation programs, and /or documentation that the
MAWA and EAWU information for the landscape project has been
submitted to the local water purveyor, may be required at the option
of the City. Example Inspection Affidavit is included as Appendix
H.
(a) Landscape audits shall not be conducted by the person who
designed or installed the landscape.
(b) In large projects or projects with multiple landscape
installations (i.e. production home developments or common
interest developments) an auditing rate of 1 in 7 lots or
approximately 15% will satisfy this requirement.
19
210
211
2.9Post- Installation Irrigation Scheduling
(A) For the efficient use of water, all irrigation schedules shall be developed,
managed, and evaluated to utilize the minimum amount of water required
to maintain plant health. Irrigation schedules shall meet the following
criteria:
CO
Irrigation scheduling shall be regulated by automatic irrigation
controllers.
(2) Overhead irrigation shall be scheduled in accordance with the local
water purveyor's Water Conservation Ordinance. Operation of the
irrigation system outside the normal watering window is allowed for
auditing and system maintenance.
2.10 Post - Installation Landscape and Irrigation Maintenance
(A) Landscapes shall be maintained to ensure water use efficiency in
accordance with Section 20.315.050(C) of the Cypress Municipal Code.
3. Provisions for Existing Landscapes
(A) Irrigation of all landscape areas shall be conducted in a manner
conforming to the rules and requirements and shall be subject to penalties
and incentives for water conservation and water waste prevention, as
determined and implemented by the local water purveyor and as may be
mutually agreed by the City.
(B) The City and /or the regional or local water purveyor may administer
programs such as irrigation water use analyses, irrigation surveys and /or
irrigation audits, tiered water rate structures, water budgeting by parcel, or
other approaches to achieve landscape water use efficiency community -
wide to a level equivalent to or less than would be achieved by applying a
MAWA calculated with an ETAF of 0.7 to all landscape areas in the City
over one acre in size.
(C) The architectural guidelines of a common interest development, including
apartments, condominiums, planned developments, and stock
cooperatives, shall not prohibit or include conditions that have the effect of
prohibiting the use of low -water use plants as a group.
4. Public Education
(A) Publications. Education is a critical component to promote the efficient use
of water in landscapes. The use of appropriate principles of design,
installation, management, and maintenance that save water is encouraged
in the community.
20
212
(B) Model Homes. All model homes that are landscaped shall use signs and
written information to demonstrate the principles of water efficient
landscapes as described.
(1)
Signs shall be used to identify the model as an example of a water
efficient landscape featuring elements such as hydrozones,
irrigation equipment, and others that contribute to the overall water
efficient theme. Signage shall include information about the site
water use as designed per the local ordinance; specify who
designed and installed the site water efficient landscape; and,
demonstrate low water use approaches to landscaping such as
using appropriate plants, alternative water sources, or rainwater
catchment systems.
(2) Information shall be provided about designing, installing, managing,
and maintaining water efficient landscapes.
21
CITY OF CYPRESS
Appendix A: Prescriptive Compliance Option
PRESCRIPTIVE COMPLIANCE OPTION
(A) This appendix contains prescriptive requirements which may be used as a
compliance option to the Ordinance.
(B) Compliance with the following items is mandatory and must be
documented in a landscape plan in order to use the prescriptive
compliance option:
(1) Submit a Landscape Documentation Package which includes the
following elements:
(a) Date;
(b) Project applicant;
(c) Project address (if available, parcel and /or lot number (s));
(d) Total landscape area (square feet), including a breakdown of
turf and plant material;
(e) Project type (e.g., new, rehabilitated, public, private,
cemetery, homeowner - installed);
(f) Water supply type (e.g., potable, recycled, well) and identify
the local retail water purveyor if the applicant is not served
by a private well;
(g)
Contact information for the project applicant and property
owner; and,
(h) Applicant signature and date with statement, "I agree to
comply with the requirements of the prescriptive compliance
option to the MWELO."
(2) Incorporate compost at a rate of at least four cubic yards per 1,000
square feet to a depth of six inches into landscape area (unless
contra - indicated by a soil test);
(3)
Plant material shall comply with all of the following:
(a) For residential areas, install climate adapted plants that
require occasional, little or no summer water (average
WUCOLS plan factor 0.3) for 75% of the plant area
excluding edibles and areas using recycled water, For non-
213
214
residential areas, install climate adapted plants that require
occasional, little or no summer water;
(b) (average WUCOLS plan factor 0.3) for 100% of the plant
area excluding edibles and areas using recycled water, and,
(c) A minimum three inch (3 ") layer of mulch shall be applied on
all exposed soil surfaces of planting areas except in turf
areas, creeping or rooting groundcovers, or direct seeding
applications where mulch is contraindicated.
(4) Turf shall comply with all of the following:
(a) Turf shall not exceed 25% of the landscape area in
residential areas, and turf shall not be planted in non-
residential areas;
(b) Turf shall not be planted on sloped areas which exceed a
slope of 1 foot vertical elevation change for every 4 feet of
horizontal length; and,
(c) Turf is prohibited in parkways Tess than 10 feet wide, unless
the parkway is adjacent to a parking strip and used to enter
and exit vehicles. Any turf in parkways must be irrigated by
sub - surface irrigation, or by other technology that creates no
overspray or runoff.
(5) Irrigation systems shall comply with the following:
(a)
Automatic irrigation controllers are required and must use
evapotranspiration or soil moisture sensor data;
(b) Irrigation controllers shall be of a type which does not lose
programming data in the event the primary power source is
interrupted;
(c) Pressure regulators shall be installed on the irrigation
system to ensure the dynamic pressure of the system is
within the manufacturers recommended pressure range;
(d) Manual shut -off valves (such as a gate valve, ball valve, or
butterfly valve) shall be installed as close as possible to the
point of connection of the water supply; and,
(e) All irrigation emission devices must meet the requirements
set in the ANSI standard, ASABE /ICC802 -2014.
"Landscape irrigation Sprinkler and Emitter Standard." All
Sprinkler heads installed in the landscape must document a
23
215
distribution uniformity low quarter of 0.65 or higher using the
protocol defined in ASABE /ICC 802 -2014.
(C) At the time of final inspection, the permit applicant must provide the owner
of the property with a certificate of completion, certificate of installation,
irrigation schedule and a schedule of landscape and irrigation
maintenance.
24
CITY OF CYPRESS
Appendix B: Certification of Landscape Design
CERTIFICATION OF LANDSCAPE DESIGN
hereby certify that:
(1) I am a professional appropriately licensed in the State of California to provide
professional landscape design services.
(2) The landscape design and water use calculations for the property located at
(provide street address or parcel number(s)) were prepared by me or under my
supervision.
(3) The landscape design and water use calculations for the identified property
comply with the requirements of the City of Cypress Water Efficient Landscape
Ordinance (Municipal Code Sections ) and the City of
Cypress Guidelines for Implementation of the City of Cypress Water Efficient
Landscape Ordinance.
(4) The information I have provided in this Certificate of Landscape Design is true
and correct and is hereby submitted in compliance with the City of Cypress Guidelines
for Implementation of the City of Cypress Water Efficient Landscape Ordinance.
Print Name Date
Signature License Number
Address
Telephone E -mail Address
Landscape Design Professional's Stamp
If a • • licable
25
216
CITY OF CYPRESS
Appendix C: Water Efficient Landscape Worksheet
WATER
This worksheet is filled out by the project
Reference Evapotranspiration (ETo)a:
217
EFFICIENT LANDSCAPE WORKSHEET
applicant and it is a required item of the Landscape Documentation Package.
Landscape Area Sector Type [ ] Residential
(select one): [ ] Non - Residential
W
SLA -
2
Estimated
Hydrozone
SLA -
3
Plant
Irrigation
SLA -
4
Total Water
# /Planting
Factor"
Irrigation
Efficiency
ETAF
Landscape
ETAF x
Used
Totals
Description
Location
(PF)
Method
(IE)
(PF /IE)
Area (sq -ft)
Area
(ETWU)
Regular Landscape Area
1
2
3
4
5
6
7
8
9
10
11
12
S vial Landscape Area
Average
Total
Total
Average ETAF for Regular In Not In
Landscape Arease (circle one): Compliance Compliance
1
SLA -
2
SLA -
3
SLA -
4
SLA -
5
Totals
Total Landscape Area
Site wide ETAF
ETWU Total
Maximum Allowed Water Allowance (MAWA)'
218
WORKSHEET INFORMATION & EQUATIONS
a Local monthly evapotranspiration rates are listed in Appendix D.
b The following table can be used for common plant factors:
Plant Fa
PF
Very low water use plant
0.1
Low water use plant
0.2
Medium water use plant
0.5
High water use plant
0.8
Lawn
0.8
Pool, spa, or other water
feature
1.0
° Irrigation efficiency is derived from measurements and estimates of irrigation system
characteristics and management practices. The minimum average irrigation efficiency
for purposes of these Guidelines is 0.71. The following irrigation efficiency may be
obtained for the listed irrigation heads with an Irrigation Management Efficiency of 90 %:
Irrigation Method
IE
Spray nozzles
71%
High efficiency spray
nozzles
73%
Multi stream /Multi trajectory
rotary (MSMT) nozzles
76%
Stream rotor nozzle
73%
Microspray
76%
Bubblers
77%
Drip emitter
81%
Subsurface drip
81%
d Estimated Total Water Use (ETWU) is the annual gallons required
ETWU = (ETo) x (0.62) x (ETAF x Area)
where, ETo = annual evapotranspiration rate in inches per year
0.62 = factor used to convert inches per year to gallons per square foot
ETAF = plant factor + irrigation efficiency
e Average ETAF for Regular Landscape Areas must be 0.55 or below for residential
areas, and 0.45 or below for nonresidential areas.
f Maximum Allowed Water Allowance (MAWA) is the annual gallons allowed
MAWA = (ETo) x (0.62) x [(ETAF x LA) + ((1 -ETAF) x SLA)]
where, ETo = annual evapotranspiration rate in inches per year
0.62 = factor used to convert inches per year to gallons per square foot
ETAF = plant factor T irrigation efficiency
LA = total (site wide) landscape area in square feet
SLA = total special landscape area
27
Appendix D: Reference Evapotranspiration Table
REFERENCE EVAPOTRANSPIRATION (ET0) TABLE
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221
O
CITY OF CYPRESS
Appendix E: Certificate of Completion
LANDSCAPE INSTALLATION CERTIFICATE OF COMPLETION
I hereby certify that:
(1) I am a professional appropriately licensed in the State of California to provide
professional landscape design services for:
(project name, mailing address and
telephone).
(2) The landscape project for the property located at
(provide street address or
parcel number(s)) was installed by me or under my supervision.
(3) The landscaping for the identified property has been installed in substantial
conformance with the approved Landscape Documentation Package and complies with
the requirements of the City of Water Efficient Landscape
Ordinance (Municipal Code Sections ) and the City of _
Guidelines for Implementation of the City of
Water Efficient Landscape Ordinance for the efficient use of water in the landscape.
(4) The following elements are attached hereto:
a. Irrigation scheduling parameters used to set the controller;
b. Landscape and irrigation maintenance schedule;
c. Irrigation audit report; and,
d. Soil analysis report, if not submitted with Landscape Documentation Package,
and documentation verifying implementation of the soil report
recommendations.
(5)
The site installation complies with the following:
a. The required irrigation system has been installed according to approved plans
and specifications and if applicable, any prior approved irrigation system
alternatives.
Yes No
b. Sprinklers comply with ASABE /ICC 802 -2014 Landscape Irrigation Sprinkler &
Emitter Standard.
Yes No
(6) The information I have provided in this Landscape Installation Certificate of
Completion is true and correct and is hereby submitted in compliance with the City of
222
CITY OF CYPRESS
Guidelines for Implementation of the City of Water
Efficient Landscape Ordinance.
Print Name Date
Signature License Number
Address
Telephone E -mail Address
Landscape Design Professional's Stamp
(If Appropriate)
32
223
224
Appendix F: Definitions
DEFINITIONS
The terms used in these Guidelines have the meaning set forth below:
"Aggregate" area pertains to production home neighborhoods, common interest
developments, or other situations where multiple parcels are undergoing landscape
development as one project, but may eventually be individually owned or maintained.
"Backflow prevention device" means a safety device used to prevent pollution or
contamination of the water supply due to the reverse flow of water from the irrigation
system.
"Check valve" or "anti -drain valve" means a valve located under a sprinkler head, or
other location in the irrigation system, to hold water in the system to prevent drainage
from sprinkler heads when the sprinkler is off.
"Certified Landscape Irrigation Auditor" means a person certified to perform landscape
irrigation audits by an accredited academic institution, a professional trade organization
or other program such as the US Environmental Protection Agency's WaterSense
irrigation auditor certification program and Irrigation Association's Certified Landscape
Irrigation Auditor program.
"Certification of Design" means the certification included as Exhibit E of these
Guidelines that must be included in the Landscape Documentation Package pursuant to
Section 2.1 of these Guidelines.
"City' means the City of Cypress or its authorized designee.
"Common interest developments" means community apartment projects, condominium
projects, planned developments, and stock cooperatives per Civil Code Section 1351
"Distribution Uniformity' or "DU" is a measure of how uniformly an irrigation head
applies water to a specific target area and theoretically ranges form zero to 100 percent.
"Drip" irrigation means any non -spray low volume irrigation system utilizing emission
devices with a flow rate measured in gallons per hour. Low volume irrigation systems
are specifically designed to apply small volumes of water slowly at or near the root zone
of plants.
"Emitter" means a drip irrigation emission device that delivers water slowly from the
system to the soil.
"Estimated Applied Water Use" or "EAWU' means the annual total amount of water
estimated to keep plants in a healthy state. It is based on factors such as reference
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evapotranspiration rate, the size of the landscape area, plant water use factors, and the
irrigation efficiency within each hydrozone.
"Evapotranspiration adjustment factor" or "ETAF' means a factor of 0.7, that, when
applied to reference evapotranspiration, adjusts for plant factors and irrigation
efficiency, two major influences upon the amount of water that needs to be applied to
the landscape. A combined plant mix with a site -wide average of 0.5 is the basis of the
plant factor portion of this calculation. For purposes of the ETAF, the average irrigation
efficiency is 0.71. Therefore, the ET Adjustment Factor is (0.7)= (0.5/0.71). ETAF for a
Special Landscape Area shall not exceed 1.0. ETAF for existing non - rehabilitated
landscapes is 0.8.
"Evapotranspiration rate" means the quantity of water evaporated from adjacent soil and
other surfaces and transpired by plants during a specified time.
"Flow rate" means the rate at which water flows through pipes, valves and emission
devices, measured in gallons per minute, gallons per hour, or cubic feet per second.
" Hardscapes" means any durable material or feature (pervious and non - pervious)
installed in or around a landscape area, such as pavements or walls. Pools and other
water features are considered part of the landscape area and not considered
hardscapes for purposes of these Guidelines.
" Greywater" means a system intreated wastewater that has not been contaminated by
any toilet discharge, has not been affected by infectious, contaminated, or unhealthy
bodily wastes, and does not present a threat from contamination by unhealthy
processing, manufacturing, or operating wastes. Greywater includes, but is not limited
to, wastewater from bathtubs, showers, bathroom washbasins, clothes washing
machines. And laundry tubs, but does not include wastewater from kitchen sinks or
dishwashers as per the Health and Safety Code (Section 17922.12). Greywater
systems promote the efficient use of water and are encouraged to assist in on -site
landscape irrigation. All greywater systems shall conform to the California Plumbing
Code (Title 24, Part 5, Chapter 16) and any applicable local ordinance standards.
"Hydrozone" means a portion of the landscape area having plants with similar water
needs and typically irrigated by one valve /controller station. A hydrozone may be
irrigated or non - irrigated.
"Infiltration rate" means the rate of water entry into the soil expressed as a depth of
water per unit of time (e.g., inches per hour).
"Invasive" plants species or "noxious" means species of plants not historically found in
California that spread outside cultivated areas and can damage environmental or
economic resources. Invasive plant species may be regulated by county agricultural
agencies as noxious species.
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"Irrigation audit' means an in -depth evaluation of the performance of an irrigation
system conducted by a Certified Landscape Irrigation Auditor. An irrigation audit
includes, but is not limited to: inspection, system tune -up, system test with distribution
uniformity or emission uniformity, reporting overspray or runoff that causes overland
flow, and preparation of an irrigation schedule.
"Irrigation Management Efficiency" or "IME" means the measurement used to calculate
the irrigation efficiency of the irrigation system for a landscaped project. A 90% IME can
be achieved by using evaportranspiration controllers, soil moisture sensors, and other
methods that will adjust irrigation run times to meet plant water needs.
"Irrigation efficiency' or "IE" means the measurement of the amount of water beneficially
used divided by the amount of water applied to a landscape area. Irrigation efficiency is
derived from measurements and estimates of irrigation system characteristics and
management practices. The minimum average irrigation efficiency for purposes of these
Guidelines is 0.71. Greater irrigation efficiency can be expected from well designed and
maintained systems. The following irrigation efficiency may be obtained for the listed
irrigation heads with an IME of 90 %:
Irrigation Method
DULQ
DULH*
EU
IE **
Spray nozzles
65%
79%
71%
High efficiency spray
nozzles
70%
82%
73%
Multi stream /Multi
trajectory rotary (MSMT)
nozzles
75%
85%
76%
Stream rotor nozzle
70%
82%
73%
Microspray
75%
85%
76%
Bubblers
85%
77%
Drip emitter
90%
81%
Subsurface drip
90%
81%
*DULH = .386 + (.614)(DULQ)
** IE (spray) = (DULH)(IME)
** IE (drip) = Emission uniformity (EU)(IME)
"Landscape coefficient" (KL ) is the product of a plant factor multiplied by a density
factor and a microclimate factor. The landscape coefficient is derived to estimate water
Toss from irrigated landscape areas and special landscape areas.
"Landscape Documentation Package" means the package of documents that a project
applicant is required to submit to the City pursuant to Section 2.1 of these Guidelines.
"Landscape Installation Certificate of Completion" means the certificate included as
Exhibit F of these Guidelines that must be submitted to the City pursuant to Section
2.7(a)(1) of hereof.
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"Landscape professional' means a licensed landscape architect, licensed landscape
contractor, or any other person authorized to design a landscape pursuant to Sections
5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of
the California Business and Professions Code, Section 832.27 of Titlel6 of the
California Code of Regulations, and Section 6721 of the California Food and Agriculture
Code.
"Landscape area" means all the planting areas, tun` areas, and water features in a
landscape design plan subject to the Maximum Applied Water Allowance and Estimated
Applied Water Use calculations. The landscape area does not include footprints of
buildings or structures, sidewalks, driveways, parking lots, decks, patios, gravel or stone
walks, other pervious or non - pervious hardscapes, and other non - irrigated areas
designated for non - development (e.g., open spaces and existing native vegetation).
"Lateral line" means the water delivery pipeline that supplies water to the emitters or
sprinklers from the valve.
"Low volume irrigation" means the application of irrigation water at low pressure through
a system of tubing or lateral lines and low volume emitters such as drip, drip lines, and
bubblers. Low volume irrigation systems are specifically designed to apply small
volumes of water slowly at or near the root zone of plants.
"Low volume overhead irrigation" means aboveground irrigation heads with an upper
flow limit of 0.5 GPM.
"Main line" means the pressurized pipeline that delivers water from the water source to
the valve or outlet.
"Manual Isolation Valve" means a valve such as a gate valve, ball valve, or butterfly
valve installed downstream of the point of connection of the water supply to shutdown
water flow through mainline piping for routine maintenance and emergency repair.
"Master shut -off valve" an electronic valve such as a solenoid valve installed as close as
possible to the point of connection and is used in conjunction with a flow sensor and
flow monitoring controller technology to automatically shutdown system wide water flow
in the event of high flow conditions such as mainline pipe break.
"Maximum Applied Water Allowance" or "MAWA" means the upper limit of annual
applied water for the established landscape area, as specified in Section 2.2 of these
Guidelines. It is based upon the area's reference evapotranspiration, the ETAF, and the
size of the landscape area. The Estimated Applied Water Use shall not exceed the
Maximum Applied Water Allowance.
"Microclimate" means the climate of a small, specific area that may contrast with the
climate of the overall landscape area due to factors such as wind, sun exposure, plant
density, or proximity to reflective surfaces.
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"Mulch" means any organic material such as leaves, bark, straw or compost, or
inorganic mineral materials such as rocks, gravel, or decomposed granite left loose and
applied to the soil surface for the beneficial purposes of reducing evaporation,
suppressing weeds, moderating soil temperature, and preventing soil erosion.
"Non- pervious" means any surface or natural material that does not allow for the
passage of water through the material and into the underlying soil.
"Operating pressure" means the pressure at which the parts of an irrigation system of
sprinklers are designed to operate at by the manufacturer
"Overspray means the irrigation water which is delivered beyond the target area.
"Person" means any natural person, firm, joint venture, joint stock company,
partnership, public or private association, club, company, corporation, business trust,
organization, public or private agency, government agency or institution, school district,
college, university, any other user of water provided by the City or the local water
purveyor, or the manager, lessee, agent, servant, officer, or employee of any of them or
any other entity which is recognized by law as the subject of rights or duties.
"Pervious" means any surface or material that allows the passage of water through the
material and into the underlying soil.
"Plant factor' or "plant water use factor" is a factor, when multiplied by ETo, that
estimates the amount of water needed by plants. For purposes of this Water Efficient
Landscape Ordinance, the plant factor range for low water use plants is 0 to 0.3; the
plant factor range for moderate water use plants is 0.4 to 0.6; and, the plant factor range
for high water use plants is 0.7 to 1.0. Plant factors cited in these Guidelines are derived
from the Department of Water Resources 2000 publication "Water Use Classification of
Landscape Species."
"Precipitation rate" means the rate of application of water measured in inches per hour.
"Project applicant" means the person submitting a Landscape Documentation Package
required under Section 2.1 to request a permit, plan check, or design review from the
local agency. A project applicant may be the property owner or his or her designee.
"Property owner" or "owner" means the record owner of real property as shown on the
most recently issued equalized assessment roll.
"Reference evapotranspiration" or "ETo" means a standard measurement of
environmental parameters which affect the water use of plants. ETo is given expressed
in inches per day, month, or year as represented in Appendix C of these Guidelines,
and is an estimate of the evapotranspiration of a large field of four to seven -inch tall,
cool- season grass that is well watered. Reference evapotranspiration is used as the
basis of determining the Maximum Applied Water Allowances.
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"Recycled water" or "reclaimed water" means treated or recycled waste water of a
quality suitable for non - potable uses such as landscape irrigation and water features.
This water is not intended for human consumption.
"Runoff' means water which is not absorbed by the soil or landscape to which it is
applied and flows from the landscape area. For example, runoff may result from water
that is applied at too great a rate (application rate exceeds infiltration rate) or when
there is a slope.
"Special Landscape Areas" or "SLA" means an area of the landscape dedicated solely
to edible plants such as orchards and vegetable gardens, areas irrigated with recycled
water, water features using recycled water, and areas dedicated to active play such as
community pools and spas, parks, sports fields, golf courses, and where turf provides a
playing surface.
"Sprinkler head" means a device which delivers water through a nozzle.
"Static water pressure" means the pipeline or municipal water supply pressure when
water is not flowing.
"Station" means an area served by one valve or by a set of valves that operate
simultaneously.
"Swing joint" means an irrigation component that provides a leak -free connection
between the emission device and lateral pipeline to allow movement in any direction
and to prevent equipment damage.
"Turf' means a ground cover surface of mowed grass. Annual bluegrass, Kentucky
bluegrass, Perennial ryegrass, Red fescue, and Tall fescue are cool- season grasses.
Bermudagrass, Kikuyugrass, Seashore Paspalum, St. Augustinegrass, Zoysiagrass,
and Buffalo grass are warm - season grasses.
"Valve" means a device used to control the flow of water in an irrigation system.
"Water Efficient Landscape Ordinance" means Ordinance No. 968, adopted by the City
Council on November 18, 2009, and codified in the Municipal Code in Chapter 20.315
LANDSCAPING STANDARDS.
"Water Efficient Landscape Worksheets" means the worksheets required to be
completed pursuant to Section 2.2 of these Guidelines and which are included in
Appendix B hereof.
"Water feature" means a design element where open water performs an aesthetic or
recreational function. Water features include ponds, lakes, waterfalls, fountains, artificial
streams, spas, and swimming pools (where water is artificially supplied). The surface
area of water features is included in the high water use hydrozone of the landscape
area. Constructed wetlands used for on -site wastewater treatment, habitat protection, or
storm water best management practices that are not irrigated and used solely for water
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treatment or storm water retention are not water features and, therefore, are not subject
to the water budget calculation.
"Watering window' means the time of day irrigation is allowed.
"WUCOLS" means the Water Use Classification of Landscape published by the
University of California Cooperative Extension, the Department of Water Resources,
and the Bureau of Reclamation, 2000. www. owue.water.ca.gov /docs/wucols00
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Appendix G: Irrigation Plan Checklist
This is a voluntary compliance tool template developed by the Irrigation Association.
IRRIGATION PLAN CHECKLIST
Please complete the following checklist by checking all appropriate categories under
APPLICANT column, indicating compliance with these content requirements. All
submitted plans shall contain the following information:
LANDSCAPE PLAN NUMBER:
NAME OF PROJECT:
Applicant
[ ] 1. Prevailing winds
[ l 2. Slope aspect and degree of slope
[ ] 3. Soil type and infiltration rate
[ ] 4. Vegetation type
[ ] 5. Microclimates
[ ] 6. Expansive or hazardous soil conditions
[ ] 7. Water harvesting potential
[ ] 8. Available water supply, including non - potable and recycled water
All pertinent system information is indicated, including:
[ ] 9. Irrigation zones substantially corresponding to hydrozones on the
landscape plan and labeled by precipitation rates and method of
application
[ ] 10. Water meters
[ ] 11. Tap -in location
[ ] 12. Static water pressure at the point of connection
[ ] 13. System controller
[ ] 14. Rain sensor /shut -off device
[ ] 15. Backflow preventers
[ ] 16. Shut -off valves and zone control valves
[ ] 17. Main line and lateral piping
[ ] 18. Sprinkler heads
[ ] 19. Bubblers and drip irrigation tubing runs
[ ] 20. Type and size of main irrigation system components
[ ] 21. Total required operating pressure for each control valve /zone
[ ] 22. Graphic depiction of the locations of irrigation system components
[ ] 23. Total required operating pressure for each control valve /zone
[ ] 24. Any supplemental stormwater and /or runoff harvesting
System design is in conformance with the following standards:
[ ] 25. Certification of Professional Qualifications, attached
[ ] 26. Pedestrian surfaces located on plan
[ ] 27. Equipment installed flush with grade for safety
[ ] 28. Compliance with local codes
[ ] 29. Overspray onto impervious areas minimized
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Appendix H: Inspection Affidavit
This is a voluntary compliance tool template developed by the Irrigation Association.
IRRIGATION INSPECTION AFFIDAVIT
(To be submitted in conformance with Code Section 20.315.050)
City File No: Project:
Inspected by:
(Individual)
Dates of Inspection:
(F)
A. Inspection during construction to check main line in open trench:
1. Location of main line conforms to as -built plan
2. Size of main line conforms to plan
3. Depth of main line conforms to plan
4. Main line condition is undamaged
5. Main line pressure tested with water and meter to check for visible leaks
6. Attach notable changes to the approved plan
DATE LNSPECTED:
B. Inspection after completion of system installation (prior to seed or sod) DATE INSPECTED:
1. Settling along trenches is absent
2. System components (i.e., controller, backflow preventer, rain sensor,
etc.) installed as specified
3. Rotary heads pressure tested
4. System activated for observation of compliance
5. Landscape components are not blocking application
6. Each station complies with design / as -built plan
7. Matched precipitation rates provided by zone
8. As -built plan provided to owner
9. Specific observations attached as needed
I hereby certify that this project was inspected within the limits of customary access for compliance with the
approved Irrigation Plan on file in City Planning, and under my Direct Supervision. I am qualified to submit
this Irrigation Inspection Affidavit based on the qualification listed below:
CLicensed Landscape Architect (of Record) ❑ Registered Professional Engineer of Record
State: Licensed No.
State Agency Phone No. (
❑ Certified Irrigation Designer of Record The Irrigation Association Year:
Name (PRINT)
Signature Date
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