HomeMy WebLinkAboutSS6 - Amendment to NBMC Chapter 14CITY OF NEWPORT BEACH
CITY COUNCIL STAFF REPORT
Study Session Agenda Item No. ss6
January 12, 2010
TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: Planning Department
Kay Sims, Assistant Planner, 949 - 644 -3237
SUBJECT: Amendment to Chapter 14.17 (Water Efficient Landscaping) of the
Newport Beach Municipal Code
ISSUE:
Should the City Council adopt a new Water Efficient Landscaping Ordinance?
RECOMMENDATION:
Review, discuss and provide guidance to staff regarding the proposed Water Efficient
Landscaping Ordinance and accompanying Design Standards document.
DISCUSSION:
Background:
History of State Legislation
AB 325 (Water Conservation in Landscaping Act), passed by the State Legislature in
1992, required all cities and counties to adopt water efficient landscape ordinances
which would establish procedures and standards of irrigation design and efficiency. The
California Department of Water Resources (DWR) developed a Model Water Efficient
Landscape Ordinance that established water efficient landscape design standards for
urban landscapes which could serve as a template for local agencies to utilize in the
development of their own local water efficient landscape ordinances. A local agency
could adopt the DWR model ordinance outright, modify it to meet local needs, or adopt
an entirely different ordinance. The act did not require agencies to adopt an ordinance
that was "at least as effective as" the State Model. The City of Newport Beach adopted
Chapter 14.17 of the Newport Beach Municipal Code in December, 1992 in response to
AB325.
Planning Department
January 12, 2010
Page 2
A61881 (Attachment: CC 3), passed in 2006, amended the Water Conservation in
Landscaping Act (AB325). AB1881 required DWR to update the original State Model
Water Efficient Landscape Ordinance and each city and county is required to update
their local landscape ordinances by January 1, 2010 so that they are "at least as
effective as" DWR's updated State Model Ordinance. If a city or county does not adopt
a local ordinance, the updated State Model will take effect in that jurisdiction January 1,
2010. DWR is required to report back to the Legislature by 2011 on whether or not a
local agency adopted a local ordinance.
Following is a comparison of the requirements of AB325 and AB1881. In keeping with
the requirements of AB1881, the focus of the State's Model Ordinance is to implement a
more stringent regulatory process for larger landscape irrigation projects.
Comparison of Landscape Irrigation Regulations
Element
1992 (AB325)
2009 (AB 1881)
Effectiveness
No requirement
Must be "at least as effective
as" the State Model
Evapotranspiration
1.0
0.7
Rate
(30% reduction in water
allocation for new landscapes)
Applicable to:
Non- residential projects, multi - family, public
All
areas, common areas
(see exemptions stated below)
Project Thresholds
1 acre of irrigated area
2 00sf
commercial, developer, HOA
and public installed projects
5 000 sf
homeowner installed
System Design
Best Available Technology
Must meet 0.7 ET Rate
(Special Landscape areas -1.0)
(Existing Landscapes -0.8)
Projects Exempt from AB1881 (all projects must comply with Chapter 14.16 of the Municipal Code
(water conservation regulations)
Landscape rehabilitation projects where replacement plantings have equal or lower water needs and the
irrigation system is designed, operable and programmed to comply with City's water conservation regulations.
Registered historical sites
Public botanical gardens and arboretums
Ecolo ical restoration projects
Landscaping in Hazard Reduction and Fuel Modification Zones
Cemeteries are not required to submit a complete Landscape Design Package; but must comply with the
following Sections: Water Efficient Landscape Calculations (2.2), and Post - Installation Irrigation
Scheduling/Maintenance 2.8 and 2.9)_
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Planning Department
January 12, 2010
Page 3
The Orange County Model Water Efficient Landscape Ordinance (OC Model)
In response to the new landscape water efficiency requirements and public dialogue
meetings, a stakeholder group was formed under the leadership of the Municipal Water
District of Orange County (MWDOC) and the Orange County Division of the League of
California Cities (the Division). The Division, in partnership with MWDOC, developed an
OC Model for Orange County cities. Input into this process was broad and included city
council members and city planning staff from various cities throughout Orange County,
County planning staff, the Orange County Fire Authority and fire department staff from
various cities throughout the county, staff from various water agencies, Building Industry
Association members, irrigation consultants, landscape architects, and other green
industry representatives.
The goal of the stakeholder group was to develop a locally- crafted model ordinance that
would meet the "at least as effective as" requirement of State law, minimize the
complexity and cost of compliance, and provide consistency among local jurisdictions.
Stakeholder meetings and technical writing sessions took place from June 2009 through
September 2009.
While the State Model (Attachment: CC 4) contains 33 pages of policy issues and
technical procedures, the approach taken by the Orange County group was to separate
the policy issues and technical procedures into two documents: the OC Model
Ordinance and Guidelines respectively. This resulted in an abbreviated and concise
ordinance supported by a guidelines document which provides all process- oriented
elements, equations, and technology - related components, and which allows flexibility to
incorporate future technical innovations in irrigation and water efficiency without having
to amend the ordinance.
The cornerstone of the OC Model Ordinance and Guidelines is a self- certification
process that will streamline the permitting process and reduce costs for applicants and
local agencies. The licensed professional designing the project is required to certify that
the submitted landscape design is in conformance with the City Ordinance and Design
Guidelines by signing (including their license number and /or professional stamp) a
Certification of Landscape Design as part of the Landscape Documentation Package
submittal. The Landscape Documentation Package must be submitted and approved
prior to permit issuance. Once construction of the landscape is complete, the licensed
professional completing the construction /installation is required to sign the Landscape
Installation Certificate of Completion stating that the installation is complete and is in
substantial conformance with the original plan. Once the Landscape Installation
Certificate of Completion is accepted by the city, the permit can be finaled.
Planning Department
January 12, 2010
Page 4
Potential Effects ofAB1881 Requirements to the City
The new State requirements and the proposed ordinance may affect City public projects
which require ministerial permits or discretionary review. However, projects which
involve replanting with equal or lower water use plants where the irrigation system
complies with the City's water conservation regulations are exempt from the
requirements; this minimizes the number of projects affected.
Many commercial projects may not meet the threshold of 2,500 square feet of
landscaped area after maximizing the square footage allowed on the lot and providing
the required parking and hardscape areas for pedestrian access. Developer- installed
new landscape projects for residential areas could be affected. Because Newport Beach
is almost fully developed, many common area projects meeting the threshold (2,500
square feet of landscaped area) would be rehabilitation projects and would be exempt if
replanting with equal or lower water use plants and the irrigation system complies with
the City's water conservation regulations. When considering homeowner installed
landscaped areas on single and two -unit lots, staff estimates that approximately 15
percent of such lots meet the 5,000 square feet threshold and could be affected by the
new requirements. When lots in Newport Coast (some not yet under City permit
jurisdiction) are factored in, the percentage of potential lots affected citywide increases
(to 17.6 percent of all city lots).
Summary
The OC Model and Design Guidelines document (Attachment CC 5) provide the
framework for the proposed Water Efficient Landscape Ordinance and Design
Standards document (Attachments CC 1 and CC 2). While the State's Model Ordinance
is a complex and lengthy document, the OC Model provides a framework which meets
the "at least as effective as" the State's new Model Ordinance requirements. It provides
as much simplicity, efficiency, and flexibility as possible. It allows a self - certification
process which eliminates the need for additional layers of review and will minimize the
cost of implementation. It provides consistency across the County for professionals
trying to comply with the requirements, and will allow training opportunities for updates
on a countywide basis. Staff recommends adoption of the proposed new Water
Efficiency Landscape Ordinance (Chapter 14.17 of the Municipal Code) and
accompanying Design Standards document which is based on the framework provided
by the OC Model Ordinance and Design Guidelines document.
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Planning Department
January 12, 2010
Page 5
Environmental Review:
This Ordinance has been determined to be categorically exempt from review under the
requirements of the California Environmental Quality Act (CEQA) under Section 15307,
Class 7 (Actions by Regulatory Agencies for Protection of Natural Resources). This
class provides an exemption for actions taken by regulatory agencies as authorized by
state law or local ordinance which assure the maintenance, restoration, or enhancement
of a natural resource where the regulatory process involves procedures for protection of
the environment. The adoption of this Ordinance will result in the enhancement and
protection of water resources in the City, and will not result in cumulative adverse
environmental impacts. It is therefore exempt from the provisions of CEQA.
Public Notice:
This agenda item may be noticed according to the Brown Act (72 hours in advance of
the public meeting at which the Council considers this item). This item was also
discussed at the Coastal Bay Committee meeting, October 8, 2009.
Prepared by:
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Kay Si s, Assistant Planner.
Attachments:
Submitted by:
David Lepo, Direct
CC 1 Proposed Water Efficiency Landscape Ordinance
CC 2 Design Standards
CC 3 AB1881
CC 4 State Model Ordinance
CC 5 OC Model Ordinance and Guidelines
R�.
Attachment No. CC 1
Proposed Water Efficiency Landscape
Ordinance
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ORDINANCE NO. 2010-
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
NEWPORT BEACH, CALIFORNIA, AMENDING IN ITS
ENTIRETY CHAPTER 14.17 OF TITLE 14 OF THE
NEWPORT BEACH MUNICIPAL CODE REGULATIONS
PERTAINING TO WATER- EFFICIENT LANDSCAPING
REGULATIONS
WHEREAS, the State Legislature has found that the continuation of California's
economic prosperity is dependent on the availability of adequate supplies of water for
future uses; and
WHEREAS, it is the policy of the State to promote the conservation and efficient
use of water and to prevent the waste of this valuable resource; and
WHEREAS, landscapes are essential to the quality of life in California by providing
areas for active and passive recreation and as an enhancement to the environment by
cleaning air and water, preventing erosion, offering fire protection, and replacing
ecosystems lost to development; and
WHEREAS, landscape design, installation, maintenance, and management can
and should be water efficient; and
WHEREAS, Article X, Section 2 of the California Constitution specifies that the
right to use water is limited to the amount reasonably required for the beneficial use to be
served, and the right does not and shall not extend to waste or unreasonable method of
use of water; and
WHEREAS, the City finds that: the average rainfall in Orange County is
approximately 12 inches per year; and
WHEREAS, Orange County has an established, large reclaimed water
infrastructure system; and
WHEREAS, current local area design practices in new landscapes typically
achieve the State Model Water Efficient Landscape Ordinance water use goals; and
WHEREAS, incentive -based water use efficiency programs have been actively
implemented within Orange County since before 1991; and
WHEREAS, the City has further found that all water services within the City are
metered; and
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WHEREAS, the City is implementing enforcement of water waste prohibitions for
all existing metered landscaped areas within its jurisdiction; and
WHEREAS, it is required that the City adopt a Water Efficient Landscape
Ordinance "as least as effective as" the State Model Ordinance or implement the State
Model Ordinance by January 1, 2010; and
WHEREAS, the City has drafted an ordinance incorporating the minimum
requirements of and which is "at least as effective as" the State Model Ordinance; and
WHEREAS, the City Council held a public hearing on January 26, 2010, in the City
Hall Council Chambers, 3300 Newport Boulevard, Newport Beach, California, on this
proposed ordinance. Notice of the time, place and purpose of the meeting was given in
accordance with the Municipal Code, and
NOW THEREFORE, THE CITY COUNCIL OF THE CITY OF NEWPORT BEACH,
CALIFORNIA, HEREBY ORDAINS AS FOLLOWS:
SECTION 1: Chapter 14.17 of Title 14 of the Newport Beach Municipal Code is hereby
amended in its entirety to read as follows:
CHAPTER 14.17: WATER EFFICIENT LANDSCAPING
14.17.005:
Purpose
14.17.010:
Definitions
14.17.020:
Applicability
14.17.030:
Landscape Water Use Standards
14.17.040:
Implementation Procedures
14.17.005: Purpose
The purpose of the City's Water Efficient Landscape Ordinance and related Design
Standards document is to establish an alternative model acceptable under AB 1881
(2006) as being at least as effective as the State Model Water Efficient Landscape
Ordinance, in orderto:
(1) promote the benefits of consistent landscape ordinances with
neighboring local and regional agencies;
(2) promote the values and benefits of landscapes while recognizing the
need to invest water and other resources as efficiently as possible;
(3) establish a structure for planning, designing, installing, and
maintaining and managing water efficient landscapes in new
construction and rehabilitated projects;
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(4) establish provisions for water management practices and water
waste prevention for existing landscapes;
(5) use water efficiently without waste by setting a Maximum Applied
Water Allowance as an upper limit for water use and reduce water
use to the lowest practical amount;
(6) encourage the use of economic incentives that promote the efficient
use of water.
14.17.010: Definitions
For the purposes of this chapter, the following words and phrases shall have the
meaning set forth in this section.
(a) Applied water: the portion of water supplied by the irrigation system to the
landscape.
(b) Budget -based tiered -rate structure: tiered or block rates for irrigation accounts
charged by the retail water agency in which the block definition for each customer is
derived from lot size or irrigated area and the evapotranspiration requirements of
landscaping.
(c) Design Standards: refers to the Design Standards for Implementation of the Water
Efficient Landscape Ordinance which describes procedures, calculations, and
requirements for landscape projects subject to this Water Efficient Landscape Ordinance.
(d) Ecological restoration project: a project where the site is intentionally altered to
establish a defined, indigenous, historic ecosystem.
(e) Estimated Applied Water Use (EAWU): the average annual total amount of water
estimated to be necessary to keep plants in a healthy state, calculated as provided in the
Design Standards. It is based on the reference evapotranspiration rate, the size of the
landscape area, plant water use factors, and the relative irrigation efficiency of the
irrigation system.
(f) ET adjustment factor or "ETAP: is equal to the plant factor divided by the irrigation
efficiency factor for a landscape project, as described in the Design Standards. The
ETAF is calculated in the context of local reference evapotranspiration, using site- specific
plant factors and irrigation efficiency factors that influence the amount of water that needs
to be applied to the specific landscaped area. -- A combined plant mix with a site -wide
average plant factor of 0.5 (indicating a moderate water need) and average irrigation
efficiency of 0.71 produces an ET adjustment factor of (0.7) _ (0.510.71), which is the
standard of water use efficiency generally required by this Water Efficient Landscape
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Ordinance and the Design Standards, except that the ETAF for a special landscape area
shall not exceed 1.0.
(g) Hardscapes: any durable material or feature (pervious and non - pervious) installed in
or around a landscaped area, such as pavements or walls. Surface area of pools and
other water features are considered part of the landscaped area and not considered
hardscapes for purposes of this Water Efficient Landscape Ordinance.
(h) Homeowner installed landscape: any landscaping either installed by a private
individual for a single family residence or installed by a licensed contractor hired by a
homeowner. A homeowner, for purposes of this ordinance, is a person who occupies the
dwelling he or she owns. This definition excludes speculative homes, which are not
owner - occupied dwellings and which are subject under this ordinance to the requirements
applicable to developer - installed residential landscape projects.
(i) Irrigation efficiency: the measurement of the amount of water beneficially used
divided by the amount of water applied. Irrigation efficiency is derived from measurements
and estimates of irrigation system characteristics and management practices. The
minimum average irrigation efficiency for purposes of this Water Efficient Landscape
Ordinance is 0.71. Greater irrigation efficiency can be expected from well designed and
maintained systems. An average plant factor of 0.5 (indicating a moderate water need)
and average irrigation efficiency of 0.71 produces an ET adjustment factor of (0.7) _
(0.510.71)
0) Landscape Documentation Package: the documents required to be provided to the
City for review and approval of landscape design projects, as described in the Design
Standards.
(k) Landscape rehabilitation project: any re- landscaping project that meets the criteria
of Section 14.17.020 (Applicability), where the modified landscaped area is greater than
2,500 square feet (or 5,000 square feet for home owner installed) , is 50% of the total
landscaped area, and the modifications are planned to occur within one year.
(1) Landscaped area: all the planting areas, turf areas, and water features (including
pools, ponds, fountains, and any other water feature) in a Landscape Design Plan
which are subject to and must be included in the Maximum Applied Water Allowance
and Estimated Applied Water Use calculations. The landscaped 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).
(m) Licensed professional: a licensed landscape architect, California licensed
landscape contractor, civil engineer, architect, or any other person authorized to design
or construct a landscape pursuant to Sections 5500.1, 5615, 5641, 5641.1, 5641.2,
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5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the California Business and
Professions Code, Section 832.27 of Title16 of the California Code of Regulations, and
Section 6721 of the California Food and Agriculture Code.
(n) Local water supplier: any entity, including a public agency, city, county, or private
water company that provides retail water service.
(o) Maximum Applied Water Allowance (MAWA): is the upper limit of annual applied
water for the established landscaped area as specified in Section 2.2 of the Design
Standards. It is based upon the area's reference evapotranspiration, the ET Adjustment
Factor, and the size of the landscaped area. The Estimated Applied Water Use shall not
exceed the Maximum Applied Water Allowance.
(p) Ministerial Permit: an authorizing document issued by the City of Newport Beach
Building Department in conjunction with a landscape project which may include, but is not
limited to: grading, pools, spas, fountains, ponds, retaining walls, fences and walls, shade
structures, trellis structures, barbecues, outdoor fireplaces, etc.
(q) New landscape installation project: a landscape installed in conjunction with any
type of new development, whether or not the new development includes construction of
new building(s). (Examples of a new development not associated with a new building
could include parks, playgrounds, greenbelts).
(r) Non - pervious: any surface or natural material that does not allow for the passage of
water through the material and into the underlying soil.
(s) Pervious: any surface or material that allows the passage of water through the
material and into the underlying soil.
(t) Plant factor or plant water use factor: is a factor, when multiplied by ETo, which
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 (70 %) to 1.0 (100°!x). Plant factors cited in this Water Efficient
Landscape Ordinance are derived from the Department of Water Resources 2000
publication "Water Use Classification of Landscape Species."
(u) Recycled water or reclaimed water: a wastewater which, as a result of treatment, is
suitable for non- potable uses not intended for human consumption such as landscape
irrigation and water features.
(v) Reference evapotranspiration or "ETo ": 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 A of the Design Standards and is an
estimate of the evapotranspiration of a large field of four -to seven -inch tall, cool- season
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grass that is well watered. Reference evapotranspiration is used as the basis of
determining the Maximum Applied Water Allowances (MAWA).
(w) Smart automatic irrigation controller: an automatic timing device used to remotely
control valves that operate an irrigation system and which schedules irrigation events
using either evapotranspiration (weather- based) or soil moisture data.
(x) Special Landscaped Area or SLA: 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, or areas dedicated to active play such as
parks, sports fields, golf courses, or areas where turf provides a playing surface. These
areas may have an ET adjustment factor (ETAF) to 1.0 (100 %).
(y) Turf: 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.
(z) Valve: a device used to control the flow of water in an irrigation system.
(aa) Water feature: 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 landscaped 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
treatment or storm water retention are not water features and, therefore, are not subject
to the water budget calculation.
14.17.020: Applicability.
(a) All planting, irrigation, and landscape - related improvements required by this
Water Efficient Landscape Ordinance shall apply to the following:
(1) New landscape installations or landscape rehabilitation projects by
public agencies or private non - residential developers with a
landscaped area (see definition) equal to or greater than 2,500
square feet, and which are otherwise subject to a discretionary
approval of a landscape plan, or which otherwise require a
ministerial permit for a landscape or water feature;
(2) New landscape installations or landscape rehabilitation projects by
developers or property managers of single - family and multi - family
residential projects or complexes with a landscaped area (see
definition) equal to or greater than 2,500 square feet, and which are
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otherwise subject to a discretionary approval of a landscape plan, or
which otherwise require a ministerial permit for a landscape or water
feature;
(3) New landscape installation projects or landscape rehabilitation
projects installed by individual homeowners on single - family or multi-
family residential lots with a total project landscaped area (see
definition) equal to or greater than 5,000 square feet and which are
otherwise subject to a discretionary approval of a landscape plan, or
which otherwise require a ministerial permit for a landscape or water
feature;
(4) New landscape installation projects or landscape rehabilitation
projects installed at cemeteries shall be subject to the following
sections of the Design Standards: Sections 2.2: Water Efficient
Landscape Calculations and Alternatives, 2.8 Post - Installation
Irrigation Scheduling, and 2.9 Post - Installation Landscape and
Irrigation Maintenance, but shall not require a Landscape Design
Package (Design Standards: Section 2.1).
(b) This Water Efficient Landscape Ordinance does not apply to:
(1) landscape rehabilitation projects that consist of replacement
plantings with equal or lower water needs and the irrigation system is
designed, operable and programmed to comply with the City's water
conservation regulations;
(2) registered local, state, or federal historical sites;
(3) ecological restoration projects that do not require a permanent
irrigation system;
(4) plant collections, as part of botanical gardens and arboretums open
to the public; or
(5) landscape in Hazard Reduction and Fuel Modification Zones, where
applicable.
(c) Section 14.17.030(b) of the of the Landscape Water Use Standards of this
Water Efficient Landscape Ordinance (requiring compliance with the City's
Water Conservation Ordinance) shall apply to:
(1) All landscaped areas, whether installed prior to (existing landscapes)
or after adoption of this ordinance.
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14.17.030: Landscape Water Use Standards.
(a) For new landscape installation or rehabilitation projects subject to Section
14.17.020) (Applicability) of this Water Efficient Landscape Ordinance, the
Estimated Applied Water Use allowed for the landscaped area shall not
exceed the MAWA calculated using an ET adjustment factor of 0.7, except
for special landscaped areas where the MAWA is calculated using an ET
adjustment factor of 1.0; or the design of the landscaped area shall
otherwise be shown to be equivalently water - efficient in a manner
acceptable to the City; as provided in the Design Standards.
(b) Irrigation of all landscaped 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 City's Water Conservation Ordinance
(NBMC Chapter 14.16).
14.17.040: Implementation Procedures.
(a) A Landscape Documentation Package shall be submitted to the City for
review and approval of all landscape projects subject to the provisions of
this Water Efficient Landscape Ordinance. Any Landscape Documentation
Package submitted to the City shall comply with the provisions of the
Design Standards.
(b) The Landscape Documentation Package shall include a Certification of
Design by a professional appropriately licensed in the State of California
stating that the landscape design and water use calculations have been
prepared by or under the supervision of the licensed professional and are
certified to be in compliance with the provisions of this Water Efficient
Landscape Ordinance and the Design Standards.
(1) Landscape and irrigation plans shall be submitted to the City for
review and approval with appropriate water use calculations. Water
use calculations shall be consistent with the procedures and
calculations provided in the Design Standards document.
(2) Verification of compliance of the landscape installation with the
approved plans shall be obtained through a Certification of
Completion which shall be submitted to the City prior to final of the
permit, per the procedures provided in the Design Standards
document.
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SECTION 2: The City Council hereby determines that this Ordinance is exempt from
review under the California Environmental Quality Act (CEQA) (California Public
Resources Code Section 21000 et seq.), because pursuant to State CEQA Regulation
15307 (14 Cal. Code Regs., § 15307), this Ordinance is covered by the CEQA
Categorical Exemption for actions taken to assure the maintenance, restoration,
enhancement, or protection of a natural resource where the regulatory process involves
procedures for protection of the environment. The adoption of this Ordinance will result in
the enhancement and protection of water resources in the City, and will not result in
cumulative adverse environment impacts. It is therefore exempt from the provisions of
CEQA. The City Council hereby directs the City Manager or designee to prepare and file
a Notice of Exemption as soon as possible following adoption of this Ordinance.
SECTION 3: If any section, subsection, sentence, clause or phrase of this ordinance is,
for any reason, held to be invalid or unconstitutional, such decision shall not affect the
validity or constitutionality of the remaining portions of this ordinance. The City Council
hereby declares that it would have passed this ordinance, and each section, subsection,
clause or phrase hereof, irrespective of the fact that any one or more sections,
subsections, sentences, clauses and phrases be declared unconstitutional.
SECTION 4: The Mayor shall sign and the City Clerk shall attest to the passage of this
ordinance. The City Clerk shall cause the same to be published once in the official
newspaper of the City, and it shall be effective thirty (30) days after its adoption.
SECTION 5: This ordinance was introduced at a regular meeting of the City Council of
the City of Newport Beach, held on the — day of 2010, and adopted on
the _ day of 2010, by the following vote, to wit:
AYE$, COUNCIL MEMBERS
NOES, COUNCIL MEMBERS
ABSENT, COUNCIL MEMBERS
MAYOR
Keith D. Curry
ATTEST:
Leilani Brown, City Clerk
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DESIGN STANDARD
For Implementation of the
WATER EFFICIENT LANDSCAPE ORDINANCE
(MUNICIPAL CODE: CHAPTER 14.17)
TABLE OF CONTENTS
Section
Pape No.
1. Purpose and Applicability ............................................ ..............................1
1.1
Purpose ............................................................ ..............................1
1.2
Applicability ...................................................... ..............................1
2. Submittal Requirements for New Landscape Installations or Landscape
Rehabilitation Projects ............................................... ...............................
2
2.1
Elements of the Landscape Documentation Package ....................
3
2.2
Water Efficient Landscape Calculations and Alternatives
.............. 4
2.3
Soil Management Report ................................ ...............................
6
2.4
Landscape Design Plan .................................. ...............................
7
2.5
Irrigation Design Plan ...................................... .............................10
2.6
Grading Design Plan ..................................... ...............................
15
2.7
Certification of Completion .................. ...............................
16
2.8
Post - Installation Irrigation Scheduling ............. .............................16
2.9
Post - Installation Landscape and Irrigation Maintenance ..............17
3. Provisions
for Existing Landscapes ......................... ...............................
17
Appendix A — Definitions ... ................................................................................... A
Appendix B — Certification of Design . ................................................................... B
Appendix C — Water Efficient Landscape Worksheets .............. .......................... C
Appendix D — Reference Evapotranspiration (ETo) Table ........................... ........ D
Appendix E — Example: Installation Certificate of Completion ...... ........... E
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1. Purpose and Applicability
1.1 Purpose
(a) The primary purpose of these Water Efficient Landscape Design
Standards (Design Standards) is to provide procedural and design
guidance for project applicants proposing new landscape installation or
rehabilitation projects that are subject to the requirements of the Water
Efficient Landscape Ordinance (Chapter 14.17 of the Newport Beach
Municipal Code). 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
implemented 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) Newport Beach Fire Department regulations for Hazard Reduction
and Fuel Modification Zones.
(4) Newport Beach Municipal Code: Title 14;
(5) Newport Beach Zoning Code: Title 20
(6) California Building Code;
(7) Planned Community Texts, General Plan and General Plan Design
Criteria for Single and Two Unit Residential Development, Coastal
Land Use Plan
(8) Any conditions of approval for a specific project
1.2 Applicability
(a) The Water Efficient Landscape Ordinance and these Design Standards
apply to all of the following:
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(1) New landscape installations or landscape rehabilitation projects by
public agencies or private non - residential developers with a
landscaped area (see definition) equal to or greater than 2,500
square feet, and which are otherwise subject to a discretionary
approval of a landscape plan, or which otherwise require a ministerial
permit for a landscape or water feature.
(2) New landscape installation projects or landscape rehabilitation
projects installed by developers or property managers of single - family
and multi - family residential projects or complexes with a total project
landscaped area (see definition) equal to or greater than 2,500
square feet, and which are otherwise subject to a discretionary
approval of a landscape plan, or which otherwise require a ministerial
permit for a landscape or water feature.
(3) New landscape installation projects or landscape rehabilitation
projects installed by individual homeowners (not a developer) on
single - family or multi - family residential lots with a total project
landscaped area (see definition) equal to or greater than 5,000
square feet, and which are otherwise subject to a discretionary
approval of a landscape plan, or which otherwise require a ministerial
permit for a landscape or water feature.
(4) New landscape installation projects or landscape rehabilitation
projects installed at cemeteries shall apply the following sections of
the Design Standards: Sections 2.2 (Water Efficient Landscape
Calculations and alternatives), 2.8 (Post- Installation Irrigation
Scheduling), and 2.9 (Post - Installation Landscape and Irrigation
Maintenance), but shall not require a Landscape Design Package
(Design Standards: Section 2.1).
(b) The Water Efficient Landscape Ordinance and these Design Standards do
not apply to:
(1) landscape rehabilitation projects that consist of replacement
plantings with equal or lower water needs where the irrigation
system is designed, operable and programmed to comply with the
City's water conservation regulations;
(2) registered local, state, or federal historical sites;
(3) ecological restoration projects that do not require a permanent
irrigation system;
(4) plant collections, as part of botanical gardens and arboretums open
to the public, and
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(5) landscape in Hazard Reduction and Fuel Modification Zones, where
applicable.
2. Submittal Requirements for New Landscape Installation Projects or
Landscape Rehabilitation Projects
2.1 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 issuance by the City of
ministerial permits in conjunction with the landscape project, or prior to
discretionary review and /or approval of a project, 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 provided by the City (see
attachments):
(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 landscaped area (square feet) and rehabilitated
landscaped area (if applicable);
(e)
project type (e.g., new or rehabilitated landscape, public
agency or private development, developer or homeowner -
installed);
(f)
water supply type (e.g., potable, recycled, or well) and
identification of the local retail water supplier if the project
applicant's water supplier is not the City of Newport Beach
(i.e. Irvine Ranch Water District IRWD or Mesa Consolidated
Water District MCWD;
(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)
a Certification of Design (Exhibit A), in accordance with
these Design Standards, that includes a licensed
professional's professional stamp, as applicable, contact
information (including email and telephone number), license
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number, date, and signature certifying the following
statement: "The design of this project complies with the
requirements of the City's Water Efficient Landscape
Ordinance and Design Standards: and
Q) any other information the City deems relevant for
determining whether the landscape project complies with the
Water Efficient Landscape Ordinance and Design
Standards.
(2) Maximum Applied Water Allowance (MAWA) and Estimated
Applied Water Use (EAWU) expressed as annual totals including,
but not limited to, the following:
(a) a Water Efficient Landscape Worksheet for the landscape
project;
(b) a hydrozone information table; and
(c) water budget calculations for the landscape project.
(3) A soil management report or specifications, or specification
provision requiring soil testing, amendment recommendations and
implementation to be accomplished during installation and
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
landscape project is limited to replacement planting and/or irrigation
for a landscape rehabilitation project.
2.2 Water 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
landscaped 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 (Appendix C).
(b) The EAWU allowable for the landscaped area shall not exceed the
MAWA. The MAWA shall be calculated using an evapotranspiration
adjustment factor (ETAF) of 0.7 except for the portion of the MAWA
applicable to any special landscaped areas within the landscape project,
which shall be calculated using an ETAF of 1.0. Where the design of the
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landscaped 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
City.
(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. The example
calculation is a hypothetical example to demonstrate proper use of
the equation.
(2) The EAWU shall be calculated using the Water Efficient Landscape
Worksheets and equation presented in Appendix C. The example
calculation is a hypothetical example.
(3) For the calculation of the MAWA and EAWU, a project applicant
shall use the ETo values from the closest location listed in the
Reference Evapotranspiration Table in Appendix D. For
geographic areas not covered in Appendix D, data from other
cities located nearby in the same reference evapotranspiration
zone may be used, as found in the CIMIS Reference
Evapotranspiration Zones Map, Department of Water Resources,
1999.
(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. The plant factor is 0.1 for very low water use plants,
0.2 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
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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 landscaped
areas shall be set at 1.0. For calculation of the EAWU, the ETAF for
special landscaped areas shall be calculated as the special
landscaped area (SLA) plant factor divided by the SLA irrigation
efficiency factor.
(9) Irrigation efficiency shall be calculated using the worksheet and
equation presented in Appendix C on page C -2.
(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 example
calculation in Appendix C is hypothetical to demonstrate
proper use of the equation and does not represent an
existing and/or planned landscape project. The reference
evapotranspiration (ETo) values used in 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.
2.3 Soil Management Report
(a) 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;
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3. pH;
4. total soluble salts;
5. sodium;
6. percent organic matter; and
7. recommendations.
(2) 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 City 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 City with the Certification of
Completion.
2.4 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 landscaped area provided
the EAWU in the landscaped area does not exceed the
MAWA. To encourage the efficient use of water, the
following is highly recommended:
1. protection and preservation of non - invasive water -
conserving plant species and water - conserving turf;
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2. selection of water - conserving plant species and water -
conserving turf;
3. selection of plants based on disease and pest resistance;
4. selection of trees based on applicable City tree
ordinances; and
5. selection of plants from local and regional landscape
program plant lists.
(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 2.5(a)(2)(D) of these Design Standards.
(c) Plants shall be selected and planted appropriately based upon their
adaptability to the climatic, geologic, and topographical conditions of the
project site. To encourage the efficient use of water, the following is highly
recommended for inclusion in the Landscape Design Plan:
(1) use the Sunset Western Climate Zone System 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); 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) A Landscape Design Plan for projects in Special Fire Protection Areas
shall address fire safety and prevention. Landscaping in Hazard Reduction
and Fuel Modification Zones shall comply with requirements of the
Newport Beach Fire Department, where applicable. Design, installation
and maintenance of Hazard Reduction and Fuel Modification Zones shall
be subject to review and approval by the Newport Beach Fire Department
prior to installation. When conflicts between water conservation and fire
safety design elements exist, the fire safety requirements shall have
priority. (Reference: Newport Beach Fire Prevention Guidelines, G.01 and
G. 02)
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(f) The use of invasive plant species and /or noxious plant species is strongly
discouraged.
(g) 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.
(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) Mulch and Amendments
(a) A minimum two inch (2 ") 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.
(b) Stabilizing mulching products shall be used on slopes.
(c) The mulching portion of the seed /mulch slurry in hydro -
seeded applications shall meet the mulching requirement.
(d) Soil amendments shall be incorporated according to
recommendations of the soil report and what is appropriate
for the plants selected (see Section 2.3 of these Design
Standards).
(h) The Landscape Design Plan, at a minimum, shall be drawn to scale and
shall accurately and clearly:
(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 landscaped area shall
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be included in the low water use hydrozone for the water budget
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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 of any applicable storm
water best management practices that encourage on -site retention
and infiltration of storm water. Storm water best management
practices are encouraged in the landscape design plan and
examples include, but are not limited to:
(a) infiltration beds, swales, and basins that allow water to
collect and soak into the ground;
(b) constructed wetlands and retention ponds that retain water,
handle excess flow, and filter pollutants; and
(c) pervious or porous surfaces (e.g., permeable pavers or
blocks, pervious or porous concrete, etc.) that minimize
runoff.
(11)
identify any applicable rain harvesting or catchment technologies
(e.g., rain gardens, cisterns, etc.);
(12)
and shall include the following statement "I have complied with the
criteria of the Water Efficient landscape Ordinance and Design
Standards and have applied them for the efficient use of water in
the landscape design plan "; and
(13)
shall bear the signature and/or official stamp of a California -
licensed professional.
2.5 Irrigation Design Plan
(a) 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
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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) Dedicated landscape water meters are highly recommended
on landscaped areas smaller than 5,000 square feet to
facilitate water management.
(b) Automatic irrigation controllers utilizing either
evapotranspiration or soil moisture sensor data shall be
required for irrigation scheduling in all irrigation systems.
(c) The irrigation system shall be designed 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.
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.
(d) 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.
(e) Manual shut -off valves (such as a gate valve, ball valve, or
butterfly valve) shall be required as close as possible to 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.
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{f) 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.
(g) High flow sensors that detect and report high flow conditions
created by system damage or malfunction are
recommended.
(h) 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.
(i) Relevant information from the soil management plan, such
as soil type and infiltration rate, shall be utilized when
designing irrigation systems.
(j) The design of the irrigation system shall conform to the
hydrozones of the Landscape Design Plan.
(k) Average irrigation efficiency 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 be assumed to be:
Pop -up stream rotator heads = 75%
Stream rotor heads = 75%
Microspray = 75%
Bubbler = 80%
Drip emitter = 85%
Subsurface irrigation = 90%
(I) It is highly recommended that the project applicant ingi. ?ire
with the City or the applicant's water supplier about peak
water operating demands (on the water supply system) or
water restrictions that may impact the effectiveness of the
irrigation system.
(m) In mulched planting areas, the use of low volume irrigation is
required to maximize water infiltration into the root zone.
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(n) Sprinkler heads and other emission devices shall have
matched precipitation rates, unless otherwise directed by the
manufacturer's recommendations.
(o) Head to head coverage is recommended. However, sprinkler
spacing shall be designed to achieve the highest possible
distribution uniformity using the manufacturer's
recommendations.
(p) Swing joints or other riser - protection components are
required on all risers subject to damage that are adjacent to
high traffic areas.
(q) Check valves or anti -drain valves are required for all
irrigation systems.
(r) Narrow or irregularly shaped areas, including turf, less than
eight (8) feet in width in any direction shall be irrigated with
subsurface irrigation or a low volume irrigation system.
(s) 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 landscaped 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 2.5 (a)(1)(h) 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 precipitation 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
13
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.
(d) Individual hydrozones that mix plants of moderate and low
water use or moderate and high water use may be allowed
if:
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.
(e) Individual hydrozones that mix high and low water use plants
shall not be permitted.
(f) 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.
(g) The Irrigation Design Plan, at a minimum, shall accurately
and clearly identify:
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;
14
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. plans shall contain 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. shall bear the signature and /or stamp of a California -
licensed professional.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.]
2.6 Grading Design Plan
(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 landscaped 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 landscaped area. All grading projects
shall comply with Newport Beach Municipal Code Chapter 15.10
(Excavation and Grading Code).
(b) The project applicant shall submit a landscape grading plan that indicates
finished configurations and elevations of the landscaped 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:
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(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 landscaped areas.
(d) The Grading Design Plan shall contain the following statement: "I have
complied with the criteria of the Newport Beach Water Efficient Landscape
Ordinance and Design Standards and have applied them accordingly for
the efficient use of water in the grading design plan" and shall bear the
signature and /or stamp of the licensed professional, as required by law.
2.7 Certification 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 in conjunction with the landscape project are
issued, and /or the landscape plans for those projects subject to
discretionary review have been approved.
(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 the permit finaling process. 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 Design Standards, which shall
include: (i) certification by a licensed 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."
(2) Documentation of the irrigation scheduling parameters used to set
the controller(s);
(3) An irrigation audit report from a certified irrigation auditor, or
documentation of enrollment in a regional or local water supplier's
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water conservation program, and documentation that the MAWA
and EAWU information for the landscape project has been
submitted to the City and /or the local water supplier.
2.8 Post - 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:
(1) Irrigation scheduling shall be regulated by automatic irrigation
controllers.
(2) Overhead irrigation shall be scheduled in accordance with the
City's Water Conservation (Municipal Code: Chapter 14.16)
Ordinance. Operation of the irrigation system outside the normal
watering window is allowed for auditing and system maintenance.
2.9 Post - Installation Landscape and Irrigation Maintenance
(a) Landscapes shall be maintained to ensure water use efficiency in
accordance with the City's Municipal Code: Title 14.
3. Provisions for Existing Landscapes
(a) Irrigation of all landscaped 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 City and/or the applicant's water
supplier.
(b) The City and/or the regional or local water supplier 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 0.8 to all landscaped 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.
17
Appendix A
Definitions
The terms used in these Design Standards have the meaning set forth below
Backflow prevention device: a safety device used to prevent pollution or
contamination of the water supply due to the reverse flow of water from the irrigation
system.
Conversion factor: the number that converts acre - inches per acre per year to gallons
per square foot per year.
Check valve" or "anti -drain valve: 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.
Certificate of Completion: the certificate included as Exhibit E hereof that must be
submitted to the City pursuant to Section 2.7(a) (1) of these Design Standards.
Certification of Design: the certification included as Exhibit B of these Design
Standards that must be included in the Landscape Documentation Package pursuant to
Section 2.1 of these Guidelines.
City: the City of Newport Beach, CA.
Common interest developments: community apartment projects, condominium
projects, planned developments, and stock cooperatives per Civil Code Section 13
Discretionary approval: is typically required for landscape projects that are subject to
site plan reviews, or where a variance from a local building or zoning 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 Planning
Commission, 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 Desion Standards for Implementation of the Water Efficient Landscape
Ordinance."
Distribution Uniformity or "DU ": is a measure of how uniformly an irrigation head
applies water to a specific target area and theoretically ranges from zero to 100 percent.
Drip irrigation: 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.
]8
3�
Emitter: a drip irrigation emission device that delivers water slowly from the system to
the soil.
Estimated Applied Water Use or EAWU: the annual total amount of water estimated
to keep plants in a healthy state. It is based on factors such as reference
evapotranspiration rate, the size of the landscaped area, plant water use factors, and
the irrigation efficiency within each hydrozone. (Water Efficient Landscape Worksheet:
Appendix C
Evapotranspiration adjustment factor or ETAF: is equal to the plant factor divided by
the irrigation efficiency factor for a landscape project, as described in the Desi n
Standards. The ETAF is calculated in the context of local reference evapotranspiration,
using site - specific plant factors and irrigation efficiency factors that influence the amount of
water that needs to be applied to the specific landscaped area
Evapotranspiration rate: the quantity of water evaporated from adjacent soil and other
surfaces and transpired by plants during a specified time.
Flow rate: 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: any durable material or feature (pervious and non - pervious) installed in or
around a landscaped area, such as pavements or walls. Pools and other water features
are considered part of the landscaped area and not considered hardscapes for
purposes of these Design Standards.
Hydrozone: a portion of the landscaped 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: 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: 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.
Irrigation audit: 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: the measurement used to calculate the
irrigation efficiency of the irrigation system for a landscaped project. A 90% [ME can be
19
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: the measurement of the amount of water beneficially
used divided by the amount of water applied to a landscaped 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
Design Standards 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 %:
Pop -up stream rotator heads = 75%
Stream rotor heads = 75%
C. Microspray = 75%
Bubbler = 80%
Drip emitter = 85%
Subsurface irrigation = 90%
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
loss from irrigated landscaped areas and special landscaped areas.
Landscape Documentation Package: the package of documents that a project
applicant is required to submit to the City pursuant to Section 2.1 of these Desi n
Standards.
Landscape rehabilitation project: any re- landscaping project that meets the criteria of
Section 14.17.020 (Applicability), where the modified landscaped area is greater than
2,500 square feet (or 5,000 square feet for home owner installed), is 50% of the total
landscaped area, and the modifications are planned to occur within one year
Landscaped area: all the planting areas, turf areas, and water features (including
pools, ponds, fountains, etc.) in a Landscape Design Plan which are subject to, and
must be included in, the Maximum Applied Water Allowance and Estimated Applied
Water Use calculations. The landscaped 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: the water delivery pipeline that supplies water to the emitters or sprinklers
from the valve.
20
�b
Licensed professional: a licensed landscape architect, California licensed landscape
contractor, architect, civil engineer, or any other person authorized to design or
construct 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.
Low volume irrigation: 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.
Main line: the pressurized pipeline that delivers water from the water source to the
valve or outlet.
Maximum Applied Water Allowance or MAWA: means the upper limit of annual
applied water for the established landscaped area, as specified in Section 2.2 of these
Design Standards. It is based upon the area's reference evapotranspiration, the ETAF,
and the size of the landscaped area. The Estimated Applied Water Use shall not exceed
the Maximum Applied Water Allowance. (Water Efficient Landscape Worksheet:
Appendix C
Microclimate: the climate of a small, specific area that may contrast with the climate of
the overall landscaped area due to factors such as wind, sun exposure, plant density, or
proximity to reflective surfaces.
Ministerial Permit: an authorizing document issued by the City of Newport Beach
Building Department in conjunction with a landscape project and which may include, but is
not limited to: grading, pools, spas, fountains, ponds, retaining walls, fences and walls,
shade structures, barbecues, outdoor fireplaces, grading, etc.
Mulch: 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.
New landscape installation project: a landscape installed in conjunction with new
development, whether or not the new development includes construction of new
building(s). (Examples of a new development not associated with a new building could
include parts, playgrounds, and greenbelts).
Non - pervious: any surface or natural material that does not allow for the passage of
water through the material and into the underlying soil.
Operating pressure: the pressure at which the parts of an irrigation system of
sprinklers are designed to operate at by the manufacturer
Overspray: the irrigation water which is delivered beyond the target area
21
t1
Special Landscaped Areas or SLA: 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, or areas dedicated to active play such as
parks, sports fields, golf courses, or where turf provides a playing surface. These areas
may have an ET adjustment factor (ETAF) to 1.0 (100°/x).
Sprinkler head: a device which delivers water through a nozzle.
Static water pressure: the pipeline or municipal water supply pressure when water is
not flowing.
Station: an area served by one valve or by a set of valves that operate simultaneously.
Swing joint: an irrigation component that provides a flexible, leak -free connection
between the emission device and lateral pipeline to allow movement in any direction
and to prevent equipment damage.
Turf: 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: a device used to control the flow of water in an irrigation system
Water Efficient Landscape Ordinance: Ordinance No. adopted by the City
Council on , 2010, and codified in the Municipal Code in Chapter 14.17.
Water Efficient Landscape Worksheets: means the worksheets required to be
completed pursuant to Section 2.2 of these Design Standards and which are included in
Appendix C.
Water feature: 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 landscaped
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
treatment or storm water retention are not water features and, therefore, are not subject
to the water budget calculation.
Watering window: the time of day irrigation is allowed.
WUCOLS: 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
23
41;,,
Sprinkler head: a device which delivers water through a nozzle
Static water pressure: the pipeline or municipal water supply pressure when water is
not flowing.
Station: an area served by one valve or by a set of valves that operate simultaneously.
Swing joint: an irrigation component that provides a flexible, leak -free connection
between the emission device and lateral pipeline to allow movement in any direction
and to prevent equipment damage.
Turf: 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: a device used to control the flow of water in an irrigation system
Water Efficient Landscape Ordinance: Ordinance No. adopted by the City
Council on , 2009, and codified in the Municipal Code in Chapter 14.17.
Water Efficient Landscape Worksheets: means the worksheets required to be
completed pursuant to Section 2.2 of these Design Standards and which are included in
Appendix C hereof.
Water feature: 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 landscaped
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
treatment or storm water retention are not water features and, therefore, are not subject
to the water budget calculation.
Watering window: the time of day irrigation is allowed.
WUCOLS: 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.wate,r.ca.gov/docsAvucols00
23
q�)
CERTIFICATION OF LANDSCAPE DESIGN
I hereby certify that:
Appendix B
(1) 1 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 Water
Efficient Landscape Ordinance (Municipal Code Sections
and the City of Design Standards for Implementation of
the City of 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
Guidelines for Implementation of the City of Water Efficient Landscape
Ordinance.
Print Name
Signature
Address
Telephone
Landscape Design Professional's Stamp
If applicable)
Date
License Number
E -mail Address
yy
Appendix C
EXAMPLE WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is filled out by the project applicant for each Point of Connection. Please complete all sections of the
worksheet.
Point of Connection # 1
Maximum Applied Water Allowance MAWA
Total MAWA = ETo x 0.7 x LA in Sq. Ft. x 0.62 + ETo x 1.0 x SLA in Sq. Ft. x 0.62 = Gallons per year for LA +SLA
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches per year)
0.7 = Evapotranspiration Adjustment Factor (ETAF)
1.0 = ETAF for Special Landscaped Area
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
SLA = Special Landscaped Area (square feet)
Example Calculation: a hypothetical landscape project in Santa Ana, CA with an irrigated landscaped area of 40,000 square
feet with 10,000 square feet of Special Landscaped Area. To calculate MAWA, the annual reference evapotranspiration value
for Santa Ana is 48.2 inches as listed in the Reference Evapotranspiration Table in Appendix D.
ETo
ETAF
LA or SLA (ft)
Conversion
MAWA Gallons Per Year)
MAWA for LA
48.2
x
0.7
x
40,000
x
0.62
=
836,752
MAWA for SLA
48.2
x
1.0
x
10,000
x
0.62
=
298,840
Total MAWA =
50,000
1,135,592 Gallons per year for LA +SLA
Estimated Applied Water Use
EAWU = ETo x KL x LA x 0.62 + IE = Gallons per year
where:
Kt = KS x Kd x Km,
EAWU = Estimated Applied Water Use (gallons per year)
KS = species factor (range = 0.1 -0.9) (see WUCOLS list for values)
ETo = Reference Evapotranspiration Appendix D (inches
Kd = density factor (range = 0.5 -1.3)
(see WUCOLS for density
per year)
value ranges)
KL = Landscape Coefficient
Kmc = microclimate factor (range
= 0.5 -1.4) (see WUCOLS)
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
WUCOLS - www. owue .water.ca.gov /docs/wucols00.pdf
IE = Irrigation Efficiency =1ME x DU (See definition in
Appendix E for
example lE percentages)
IME = Irrigation Management Efficiency (90 %)
DU = Distribution Uniformity of irrigation head
Example Calculation:
ETo
KL
LA
Conversion
IE
EAWU (Gallons per year)
Special Landscaped Area
48.2
x
1.00
x
10,000
x
0.62
+
0.75
=
398,453
Cool Season Turf
48.2
x
1.00
x
0
x
0.62
+
0.71
=
0
Warm Season Turf
48.2
x
(165
x
0
x
0.62
+
0.71
=
0
High Water Using Shrub
48.2
x
0.70
x
0
x
0.62
+
0.71
=
0
Medium Water Using Shrub
48.2
x
0.50
x
15,000
x
0.62
+
0.65
=
344,815
Low Water Using Shrub
48.2
x
0.30
x
25,000
x
0.62
+
0.75
=
298,840
Very Low Water Using Shrub
48.2
x
0.20
x
0
x
0.62
0.71
=
0
Other
48.2
x
0.50
x
0
x
0.62
+
0.71
=
0
Other
48.2
x
0.50
x
0
x
0.62
+
0.71
=
0
Total EAWU=
150,0 00
1
1,042,109 Gallons per year
Compare EAWU with MAWA. The EAWU (1,042,109 gallons per year) is less than MAWA (1,135,592 gallons per year). For
this example, the water budget complies with the MAWA.
List sprinkler heads, microspray, and drip emitters here along with average precipitation rate and Distribution Uniformity of
Irrigation Head.
Sprinkler Head T es
Avera a Precipitation Rate
Distribution Uniformit ofIrrigation Head
Drip
Micros pray
Bubbler
Low precipitation rotating nozzles
Stream rotors
IC
WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is filled out by the project applicant for each Point of Connection. Please complete all sections of the
worksheet.
Point of Connection #
Maximum Applied Water Allowance MAWA
Total MAWA = ETo x 0.7 x LA in S . Ft. x 0.62 + ETo x 1.0 x SLA in Sq. Ft. x 0.62 =Gallons per year for LA +SLA
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches per year)
0.7 = Evapotranspiration Adjustment Factor (ETAF)
1.0 = ETAF for Special Landscaped Area
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
SLA = Special Landscaped Area (square feet)
MAWA Calculation:
ETo
ETAF
LA or SLA ft)
Conversion
MAWA (Gallons Per Year)
MAWA for LA=
I
I x
10.7
1 x
x
0.62
=
MAWA for SLA =
x
1.0
x
x
0.62
=
Total MAWA =
r
Estimated Applied Water Use
EAWU = ETo x KL LA x 0.62 _ IE = Gallons per year
-x
where:
EAWU = Estimated Applied Water Use (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches
per year)
KL = Landscape Coefficient
LA = Landscaped Area (square feet)
0.62= Conversion factor(to gallons per square foot)
IE = Irrigation Efficiency = 1ME x DU
IME = Irrigation Management Efficiency (9091o)
DU = Distribution Uniformity of irrigation head
KL = KS x Kd x Km,
KS = species factor (range = 0.1 -0.9) (see WUCOLS list for values)
Kd = density factor (range = 0.5 -1.3) (see WUCOLS for density
value ranges)
Km� = microclimate factor (range = 0.5 -1.4) (see WUCOLS)
WUCOLS- www. owue .water.ca.gov /docs /wucols00.pdf
EAWU Calculation:
ETo
KL
LA
Conversion
IE
EAWU (Gallons Per Year
Special Landscaped Area
x
x
x
0.62
Cool Season Turf
x
x
x
0.62
Warm Season Turf
x
x
x
0.62
High Water Using Shrub
x
x
x
0.62
Medium Water Using Shrub
x
x
x
0.62
Low Water Using Shrub
x
x
x
0.62
Very Low Water Using Shrubs
x
x
x
0.62
X
x
x
0.62
X
x
x
0.62
X
x
x
0.62
X
x
x
0.62
-
_
List sprinkler heads, microspray, and drip emitters here along with average precipitation rate and Distribution Uniformity of
Irrigation Head.
Sprinkler Head Types
Avera a Precipitation Rate
x
Drip
x
x
0.62
Bubbler
Low precipitation rotating nozzles
x
Stream rotors
x
x
0.62
Other
x
x
x
0.62
Total EAWU =
List sprinkler heads, microspray, and drip emitters here along with average precipitation rate and Distribution Uniformity of
Irrigation Head.
Sprinkler Head Types
Avera a Precipitation Rate
Distribution Uniformit of Irri ation Head
Drip
Micros pray
Bubbler
Low precipitation rotating nozzles
Stream rotors
Appendix D
Reference Evapotranspiration (ETo) Table
Appendix C - Reference Eva otrans iration ETo Table*
County
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
and
ETo
C it
Orange
Irvine
2.2
2.5
3.7
4.7
5.2
5.9
6.3
6.2
4.6
3.7
2.6
2.3
49.6
Laguna
2.2
2.7
3.4
18
4.6
4.6
4.9
4.9
4.4
3.4
2.4
2.0
43.2
Beach
Santa
2.2
2.7
3.7
4.5
4.6
5.4
6.2
6.1
4.7
3.7
2.5
2.0
48.2
Ana
The values in this table were derived from:1) California Irrigation Management
Information System CIMIS 2 Reference
EvapoTranspiration Zones Map, UC Dept. of Land, Air & Water Resources and California
Dept of Water Resources 1999,
3) Reference Evapotranspiration for California, University of California, Department of
Agriculture and Natural Resources
(1987) Bulletin 1922 4) Determining Daily Reference Evapotranspiration, Cooperative
Extension UC Division of
Agriculture and Natural Resources (1987), Publication Leaflet 21426
S�
Appendix E
LANDSCAPE INSTALLATION CERTIFICATE OF COMPLETION
I hereby certify that:
(1) 1 am a professional appropriately licensed in the State of California to provide
professional landscape design services.
(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 _
Design Standards for Implementation of the City of
Water Efficient Landscape Ordinance for the efficient use of water in the
landscape.
(4) 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 _
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)
Attachment No. CC 3
AB1881
5 3
Assembly Bill No. 1881
CHAPTER 559
An act to add Section 1353.8 to the Civil Code, to repeal and add
Article 10.8 (commencing with Section 65591) of Chapter 3 of Division 1
of Title 7 of the Government Code, to add Section 25401.9 to the Public
Resources Code, and to add Article 4.5 (commencing with Section 535) to
Chapter 8 of Division I of the Water Code, relating to water conservation.
[Approacd by Gowmoi September 28, 2006. Piled with
Secretary oCSlate September 28, 2006.1
LLGISLATIVE. COUNSEL'S DIGEST
AB 1881, Laird. Water conservation.
(1) Existing law, the Davis- Sterling Common interest Development
Act, defines and regulates common interest developments, which include
community apartment projects, condominium projects, planned
developments, and stock cooperatives.
This bill would provide that the architectural guidelines of a common
interest development shall not prohibit or include conditions that have the
effect of prohibiting the use of low water -using plants as a group.
(2) The Water Conservation in Landscaping Act requires the
Department of Waiter Resources to appoint an advisory task force to work
with the department to draft a model local water efficient landscape
ordinance that local agencies may adopt, requires the task force to submit
the ordinance to the department on or before May I, 1991, and requires the
task force to cease to exist on the date the department adopts the model
ordinance or January 1, 1992, whichever occurs first. The act requires the
department. not later than. January 1, 1992, to adopt a model local water
efficient landscape ordinance which each local agency may adopt. The act
makes the model local water efficient landscape ordinance adopted by the
department applicable within thejurisdiction of a local agency if that local
agency, by .January f, 1993, has not adopted a water efficient landscape
ordinance or has not adopted certain findings that the adoption of the
ordinance is unnecessary.
This bill would specify that the provision making the model ordinance
applicable to a local agency on and after January 1, 1993, does not apply
to chartered cities. The bill would require the department, to the extent
funds are appropriated., not later than January 1, 2009, by regulation, to
update the model ordinance in accordance with specified requirements.
The bill would require the department to prepare and submit to the
Legislature a prescribed report before the adoption of the updated model
ordinance. The bill would require a local agency, not later than January 1,
2010, to adopt the updated model ordinance or other water efficient
92
Ch. 559 —2—
landscape ordinance that is at least as effective in conserving water as the
updated model ordinance. The bill would make the updated model
ordinance applicable within the jurisdiction of a local agency, including a
chartered city, if, by January 1, 2010: the local agency has not adopted its
own water efficient landscape ordinance or the updated model ordinance.
The bill would require each local agency, not later than January 31, 2010,
to notify the department as to whether the local agency is subject to the
department's updated model ordinance and, if not, to submit to the,
department a copy of the water efficient landscape ordinance adopted by
the local agency, among other documents. The bill would require the
department, to the extent funds are appropriated, not later than January 31,
2011, to prepare and submit a report to the Legislature relating to the
status of water efficient landscape ordinances adopted by local agencies.
By imposing requirements on local agencies in connection with the
adoption of water efficient landscape ordinances, the bill would impose a
state - mandated local program.
(3) Existing law requires the State Energy Resources Conservation and
Development Commission (Energy Commission), after one or more public
hearings, to take specified action to reduce the wasteful, uneconomic,
inefficient, or unnecessary consumption of energy. Existing law requires
the Energy Commission, by January I, 2004, to amend specified
regulations to require that residential clothes washers manufactured on or
after January I, 2007, be at least as water efficient as commercial clothes
washers, and to take certain other related action.
This bill would require the Energy Commission, in consultation with the
department, to adopt, to the extent funds are available, by regulation
perfomance standards and labeling requirements for landscape irrigation
equipment, including irrigation controllers, moisture sensors, emission
devices, and valves to reduce the wasteful, uneconomic, inefficient, or
unnecessary consumption of energy or water. The bill would require the
Energy Commission to adopt those requirements for landscape irrigation
controllers and moisture sensors by January 1, 2010, and, on and after
January 1, 2012, would prohibit the sale or installation of an irrigation
controller or moisture sensor for landscape use unless the controller or
sensor meets those adopted. requirements. The bill would require the
Energy Commission, on or before January 1, 2010, to prepare and submit
to the Legislature a report that sets forth a proposed schedule for adopting
performance standards and labeling requirements for emission devices and
valves.
(4) Existing law generally requires an urban water supplier to install
water meters on all municipal and industrial service connections located
within its service area on or before January 1, 2025.
This bill would require a water purveyor as defined, to require as a
condition of new retail water service on and after January t, 2009, the
installation of separate water meters to measure the volume of water used
exclusively for landscape purposes. The bill would make this requirement
applicable to specified service connections.
92
55"
-3— Ch. 559
(5) The California Constitution requires the state to reimburse local
aeencies and school districts for certain costs mandated by the state.
Statutory provisions establish procedures for making that reimbursement.
This bill would provide that, if the Commission on State Mandates
determines that the bill contains costs mandated by the state,
reimbursement for those costs shall be made pursuant to these statutory
provisions.
The people of the State of California do enact as follows:
SECTION 1. Section 1353.8 is added to the Civil Code, to read:
1353.8. The architectural guidelines of a common interest development
shall not prohibit or include conditions that have the effect of prohibiting
the use of low water -using plants as a group.
SEC. 2. Article 10.8 (commencing with Section 65591) of Chapter 3 of
Division I of Title 7 of the Government Code is repealed.
SEC. 3. Article 10.8 (commencing with Section 65591) is added to
Chapter 3 of Division I of Title 7 of the Government Code, to read:
Article 10.8. Water Conservation in Landscaping
65591. This article shall be known and may be cited as the Water
Conservation in Landscaping Act.
65592. Unless the context requires otherwise, the following definitions
govern the construction of this article:
(a) `Department" means the Department of Water Resources.
(b) "Local agency" means any city, county, or city and county,
including a charter city or charter county.
(c) "Water efficient landscape ordinance" means an ordinance or
resolution adopted by a local agency, or prepared by the department, to
address the efficient use of water in landscaping.
65593. The Legislature finds and declares all of the following:
(a) The waters of the state are of limited supply and are subject to ever
increasing demands.
(b) The continuation of California's economic prosperity is dependent
on adequate supplies of water being available for future uses.
(c) It is the policy of the state to promote the conservation and efficient
use of water and to prevent the waste of this valuable resource.
(d) Landscapes are essential to the quality of life in California by
providing areas for active and passive recreation and as an enhancement to
the environment by cleaning air and water, preventing erosion, offering
fire protection, and replacing ecosystems lost to development.
(e) Landscape design, installation, maintenance, and management can
and should be water efficient.
(f) Section 2 of Article X of the California Constitution specifies that
the right to use water is limited to the amount reasonably required for the
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beneficial use to be served and the right does not and shall not extend to
waste or unreasonable use or unreasonable method of use.
(g) (1) The Legislature, pursuant to Chapter 632 of the Statutes of
2004, requested the California Urban Water Conservation Council to
convene a stakeholders work group to develop recommendations for
improving the efficiency of water use in urban irrigated landscapes.
(2) The work group report includes a recommendation to update the
model water efficient landscape ordinance adopted by the department
pursuant to Chapter 1 145 of the Statutes of 1990.
(3) It is the intent of the Legislature that the department promote the use
of this updated model ordinance.
(h) Notwithstanding Article 13 (commencing with Section 65700), this
article addresses a matter that is of statewide concern and is not a
municipal affair as that terns is used in Section 5 of Article XI of the
California Constitution. Accordingly, it is the intent of the Legislature that
this article, except as provided in Section 65594, apply to all cities and
comities, including charter cities and charter counties.
65594. (a) Except as provided in Section 65595, if by January 1, 1993,
a local agency did not adopt a water efficient landscape ordinance and did
not adopt findings based on climatic, geological, or topographical
conditions, or water availability that state that a water efficient landscape
ordinance is unnecessary, the model water efficient landscape ordinance
adopted by the department pursuant to Chapter 1145 of the Statutes of
1990 shall apply within the jurisdiction of the local agency as of that date,
shall be enforced by the local agency, and shall have the same force and
effect as if adopted by the local agency.
(b) Notwithstanding subdivision (b) of Section 65592, subdivision (a)
does not apply to chartered cities.
(c) This section shall apply only until the department updates the model
ordinance.
65595. (a) (1) To the extent funds are appropriated, not later than
January 1, 2009, by regulation, the department shall update the model
water efficient landscape ordinance adopted pursuant to Chapter 1145 of
the Statutes of 1990, after holding one or more public hearings. The
updated model ordinance shall be based on the recommendations set forth
in the report prepared pursuant to Chapter 682 of the Statutes of 2004 and
shall meet the requirements of Section 65596.
(2) Before the adoption of the updated model ordinance pursuant to
paragraph (1), the department shall prepare and submit to the Legislature a
report relating to both of the following:
(A) The extent to which local agencies have complied with the model
water efficient landscape ordinance adopted pursuant to Chapter 1 145 of
the Statutes of 1990.
(B) The department's recommendations regarding the landscape water
budget component of the updated model ordinance described in
subdivision (b) of Section 65596.
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(b) Not later than January 31, 2009, the department shall distribute the
updated model ordinance adopted pursuant to subdivision (a) to all local
agencies and other interested parties.
(c) On or before January 1, 2010, a local agency shall adopt one of the
following:
(1) A water efficient landscape ordinance that is, based on evidence in
the record, at least as effective in conserving water as the updated model
ordinance adopted by the department pursuant to subdivision (a).
(2) The updated model ordinance described in paragraph (1).
(d) If the local agency has not adopted, on or before January 1, 2010, a
water efficient landscape ordinance pursuant to subdivision (c), the
updated model ordinance adopted by the department pursuant to
subdivision (a) shall apply within the jurisdiction of the local agency as of
that date, shall be enforced by the local agency, and shall have the same
force and effect as if adopted by the local agency.
(e) Nothing in this article shall be construed to require the local
agency's water efficient landscape ordinance to duplicate, or to conflict
with, a water efficiency program or measure implemented by a public
water system, as defined in Section 116275 of the Health and Safety Code,
within thejurisdictional boundaries of the local agency.
65596. The updated model ordinance adopted pursuant to Section
65595 shall do all the following in order to reduce water use:
(a) Include provisions for water conservation and the appropriate use
and groupings of plants that are well - adapted to particular sites and to
particular climatic, soil, or topographic conditions. The model ordinance
shall not prohibit or require specific plant species, but it may include
conditions for the use of plant species or encourage water conserving
plants. However, the model ordinance shall not include conditions that
have the effect of prohibiting or requiring specific plant species.
(b) Include a landscape water budget component that establishes the
maximum amount of water to be applied through the irrigation system,
based on climate, landscape size, irrigation efficiency, and plant needs.
(c) Promote the benefits of consistent local ordinances in neighboring
areas.
(d) Encourage the capture and retention of stormwater onsite to
improve water use efficiency or water quality.
(c) Include provisions for the use of automatic irrigation systems and
irrigation schedules based on climatic conditions, specific terrains and soil
types, and other environmental conditions. The model ordinance shall
include references to local, state, and federal laws and regulations
regarding standards for water - conserving irrigation equipment. The model
ordinance may include climate information for irrigation scheduling based
on the California Irrigation Management Information System.
(f) Include provisions for onsite soil assessment and soil management
plans that include grading and drainage to promote healthy plant growth
and to prevent excessive erosion and runoff, and the use of mulches in
shrub areas, garden beds, and landscaped areas where appropriate.
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Ch. 559 —6—
(g) Promote the use of recycled water consistent with Article 4
(commencing with Section 13520) of Chapter 7 of Division 7 of the Water
Code.
(h) Seek to educate water users on the efficient use of water and the
benefits of doing so.
(i) Address regional differences, including fire prevention needs.
Q) Exempt landscaping that is part of a registered historical site.
(k) Encourage the use of economic incentives to promote the efficient
use of water.
(t) Include provisions for landscape maintenance practices that foster
long -term landscape water conservation. Landscape maintenance practices
may include, but are not limited to, performing routine irrigation system
repair and adjustments, conducting water audits, and prescribing the
amount of water applied per landscaped acre_
(m) Include provisions to minimize landscape irrigation overspray and
runoff.
65597. Not later than January 31, 2010, each local agency shall notify
the department as to whether the local agency is subject to the
department's updated model ordinance adopted pursuant to Section 65595,
and if not, shall submit to the department a copy of the water efficient
landscape ordinance adopted by the local agency, and a copy of the local
agency's findings and evidence in the record that its water efficient
landscape ordinance is at least as effective in conserving water as the
department's updated model ordinance. Not later than January 31, 2011,
the department shall, to the extent funds are appropriated, prepare and
submit a report to the Legislature summarizing the status of water efficient
landscape ordinances adopted by local agencies.
65598. Any model ordinance adopted pursuant to this article shall
exempt cemeteries from all provisions of the ordinance except those set
forth in subdivisions (h), (k), and t0 of Section 65596. In adopting
language specific to cemeteries, the department shall recognize the special
landscape management needs of cemeteries.
65599. Any actions or proceedings to attach, review, set aside, void. or
annul the act, decision, or findings of a local agency on the ground of
noncompliance with this article shall be brought pursuant to Section 1085
of the Code of Civil Procedure,
SEC. 4. Section 25401.9 is added to the Public Resources Code, to
read:
25401.9. (a) To the extent that funds are available, the commission, in
consultation with the Department of Water Resources, shall adopt by
regulation, after holding one or more public hearings, performance
standards and labeling requirements for landscape irrigation equipment,
including, but not limited to, irrigation controllers, moisture sensors,
emission devices, and valves, for the purpose of reducing the wasteful,
uneconomic, inefficient, or unnecessary consumption of energy or water.
(b) For the purposes of complying with subdivision (a), the commission
shall do all of the following:
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(1) Adopt performance standards and labeling requirements for
landscape irrigation controllers and moisture sensors on or before January
1,2010.
(2) Consider the Irrigation Association's Smart Water Application
Technology Program testing protocols when adopting performance
standards for landscape irrigation equipment, including, but not limited to,
irrigation controllers, moisture sensors, emission devices, and valves.
(3) Prepare and submit a report to the Legislature, on or before January
1, 2010, that sets forth on a proposed schedule for adopting performance
standards and labeling requirements for emission devices and valves.
(c) On and after January 1, 2012, an irrigation controller or moisture
sensor for landscape irrigation uses may not be sold or installed in [lie state
unless the controller or sensor meets the performance standards and
labeling requirements established pursuant to this section.
SEC. 5. Article 4.5 (commencing with Section 535) is added to
Chapter 8 of Division 1 of the Water Code, to read:
Article 4.5, Irrigated Landscape
535. (a) A water purveyor shall require as a condition of new retail
water service on and after .January 1, 2008, the installation of separate
water meters to measure the volume of water used exclusively for
landscape purposes.
(b) Subdivision (a) does not apply to either of the following:
(1) Single- familyresideotialcminections.
(2) Connections used to supply water for the commercial production of
agricultural crops or livestock.
(c) Subdivision (a) applies only to a service connection for which both
of the following apply:
(I) The connection serves property with more than 5,000 square feet of
irrigated landscape.
(2) The connection is supplied by a water purveyor that serves 15 or
more service connections.
(d) For the purposes of this section, "new retail water service" means
the installation of a new water meter where water service has not been
previously provided, and does not include applications for new water
service submitted before January I, 2007.
SEC. 6. If the Commission on State Mandates determines that this act
contains costs mandated by the state, reimbursement to local agencies and
school districts for those costs shall be made pursuant to Part 7
(commencing with Section 17500) of Division 4 of Title 2 of the
Government Code.
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a
Attachment No. CC 4
State Model Ordinance
Model Water Efficient Landscape Ordinance
m
California Code of Regulations
Title 2' ). Waters
Division 2. Department of Water Resources
Chapter 2.7. Model Water Efficient Landscape Ordinance
§ 490. Purpose.
(a) The State Legislature has found:
(1) that the waters of the state are of limited supply and are subject to ever increasing demands;
(2) that the continuation of California's economic prosperity is dependent on the availability of adequate
supplies of water for future uses;
(3) that it is the policy of the State to promote the conservation and efficient use of water and to prevent
the waste of this valuable resource;
(4) that landscapes are essential to the quality of life in California by providing areas for active and
passive recreation and as an enhancement to the environment by cleaning air and water, preventing
erosion, offering fire protection, and replacing ecosystems lost to development; and
(5) that landscape design, installation, maintenance and management can and should be water efficient;
and
(6) that Section 2 of Article X of the California Constitution specifies that the right to use water is
limited to the amount reasonably required for the beneficial use to be served and the right does not and
shall not extend to waste or unreasonable method of use.
(b) Consistent with these legislative findings, the purpose of this model ordinance is to:
(1) promote the values and benefits of landscapes while recognizing the need to invest water and other
resources as efficiently as possible;
(2) establish a structure for plarming, designing, installing, maintaining and managing water efficient
landscapes in new construction and rehabilitated projects;
(3) establish provisions for water management practices and water waste prevention for existing
landscapes;
(4) use water efficiently without waste by setting a Maximtin Applied Water Allowance as an upper
limit for water use and reduce water use to the lowest practical amount;
(5) promote the benefits of consistent landscape ordinances with neighboring local and regional
agencies;
(6) encourage local agencies and water purveyors to use economic incentives that promote the efficient
use of water, such as implementing a tiered -rate structure; and
(7) encourage local agencies to designate the necessary authority that implements and enforces the
provisions of the Model Water Efficient Landscape Ordinance or its local landscape ordinance.
Note: Authority cited: Section 65593, Government Code. Reference: Sections 65591, 65593, 65596,
Government Code.
§ 490.1 Applicability
(a) After January 1, 2010, this ordinance shall apply to all of the following landscape projects:
(1) new construction and rehabilitated landscapes for public agency projects and private development
projects with a landscape area equal to or greater than 2,500 square feet requiring a building or
landscape permit, plan check or design review;
(2) new construction and rehabilitated landscapes which are developer - installed in single - family and
multi- family projects with a landscape area equal to or greater than 2,500 square feet requiring a
building or landscape ;permit, plan check, or design review;
(3) new construction landscapes which are homeowner - provided and /or homeowner -hired in single -
family and multi- family residential projects with a total project landscape area equal to or greater than
5,000 square feet requiring a building or landscape permit, plan check or design review;
E3
(4) existing landscapes limited to Sections 493; 493.1 and 493.2; and
(5) cemeteries. Recognizing the special landscape management needs of cemeteries, new and
rehabilitated cemeteries are limited to Sections 492.4, 492.11 and 492.12; and existing cemeteries are
limited to Sections 493.493.1 and 493.2.
(b) This ordinance does 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.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 491. Definitions.
The terms used in this ordinance have the meaning set forth below:
(a) "applied water" means the portion of water supplied by the irrigation system to the landscape.
(b) "automatic irrigation controller" means an automatic timing device used to remotely control valves
that operate an irrigation system. Automatic irrigation controllers schedule irrigation events using either
evapotranspiration (weather- based) or soil moisture data.
(c) "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.
(d) "Certificate of Completion" means the document required under Section 492.9.
(e) "certified irrigation designer" means a person certified to design irrigation systems by an accredited
academic institution a professional trade organization or other program such as the US Environmental
Protection Agency's WaterSense irrigation designer certification program and Irrigation Association's
Certified Irrigation Designer program.
(f) "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.
(g) "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.
(h) "common interest developments" means community apartment projects, condominium projects,
planned developments, and stock cooperatives per Civil Code Section 1351.
(i) "conversion factor (0.62)" means the number that converts acre - inches per acre per year to gallons
per square foot per year
(j) "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.
(k) "ecological restoration project" means a project where the site is intentionally altered to establish a
defined, indigenous, historic ecosystem.
(1) "effective precipitation" or "usable rainfall" (Eppt) means the portion of total precipitation which
becomes available for plant growth.
(in) "emitter" means a drip irrigation emission device that delivers water slowly from the system to the
soil.
(n) "established landscape" means the point at which plants in the landscape have developed significant
root growth into the soil. Typically, most plants are established after one or two years of growth.
(o) "establishment period of the plants" means the first year after installing the plant in the landscape or
the first two years if irrigation will be terminated after establishment. Typically, most plants are
established after one or two years of growth.
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,
(p) "Estimated Total Water Use" (ETWU) means the total water used for the landscape as described in
Section 492.4.
(q) `ET adjustment factor" (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 O.S.
(r) `evapotranspiration rate" means the quantity of water evaporated from adjacent soil and other
surfaces and transpired by plants during a specified time.
(s) "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.
(t) "hardscapes" means any durable material (pervious and non - pervious).
(u) "homeowner- provided landscaping" means any landscaping either installed by a private individual
for a single family residence or installed by a licensed contractor hired by a homeowner. A homeowner,
for purposes of this ordinance, is a person who occupies the dwelling he or she owns. This excludes
speculative homes, which are not owner- occupied dwellings.
(v) "hydrozone" means a portion of the landscaped area having plants with similar water needs. A
hydrozone may be irrigated or non - irrigated.
(w) "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).
(x) "invasive plant species" means species of plants not historically found in California that spread
outside cultivated areas and can damage environmental or economic resources. Invasive species may be
regulated by county agricultural agencies as noxious species. "Noxious weeds" means any weed
designated by the Weed Control Regulations in the Weed Control Act and identified on a Regional
District noxious weed control list. Lists of invasive plants are maintained at the California Invasive Plant
Inventory and USDA invasive and noxious weeds database.
(y) "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.
(z) "irrigation efficiency" (IE) means the measurement of the amount of water beneficially used divided
by the amount of water applied. Irrigation efficiency is derived from measurements and estimates of
irrigation system characteristics and management practices. The minimum average irrigation efficiency
for purposes of this ordinance is 0.71. Greater irrigation efficiency can be expected from well designed
and maintained systems.
(aa) "irrigation survey" means an evaluation of an irrigation system that is less detailed than an irrigation
audit. An irrigation survey includes, but is not limited to: inspection, system test, and written
recommendations to improve performance of the irrigation system.
(bb) "irrigation water use analysis" means an analysis of water use data based on meter readings and
billing data.
(cc) "landscape architect' means a person who holds a license to practice landscape architecture in the
state of California Business and Professions Code, Section 5615.
(dd) "landscape area" means all the planting areas, turf areas, and water features in a landscape design
plan subject to the Maximum Applied Water Allowance calculation. 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).
!ll
US
(ee) "landscape contractor" means a person licensed by the state of California to construct, maintain,
repair, install, or subcontract the development of landscape systems.
(ff) "Landscape Documentation Package" means the documents required under Section 492.3.
(gg) "landscape project" means total area of landscape in a project as defined in "landscape area" for the
proposes of this ordinance, meeting requirements under Section 490.1.
(hh) "lateral line" means the water delivery pipeline that supplies water to the emitters or sprinklers from
the valve.
(ii) "local agency" means a city or county, including a charter city or charter county, that is responsible
for adopting and implementing the ordinance. The local agency is also responsible for the enforcement
of this ordinance, including but not limited to, approval of a permit and plan check or design review of a
prej ect.
Oj) "local water purveyor" means any entity, including a public agency, city, county, or private water
company that provides retail water service.
(kk) "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.
(11) "main line" means the pressurized pipeline that delivers water from the water source to the valve or
outlet.
(mm) "Maximum Applied Water Allowance" (MAWA) means the upper limit of annual applied water
for the established landscaped area as specified in Section 492.4. It is based upon the area's reference
evapotranspiration, the ET Adjustment Factor, and the size of the landscape area- The Estimated Total
Water Use shall not exceed the Maximum Applied Water Allowance. Special Landscape Areas,
including recreation areas, areas permanently and solely dedicated to edible plants such as orchards and
vegetable gardens, and areas irrigated with recycled water are subject to the MAWA with an ETAF not
to exceed 1.0.
(mi) "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.
(oo) "mined -land reclamation projects" means any surface mining operation with a reclamation plan
approved in accordance with the Surface Mining and Reclamation Act of 1975.
(pp) "mulch" means any organic material such as leaves, bark, straw, compost, or inorganic mineral
materials such as rocks, gravel, and 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.
(qq) "new constructiod' means, for the purposes of this ordinance, a new building with a landscape or
other new landscape, such as a park, playground, or greenbelt without an associated building.
(rr) "operating pressure" means the pressure at which the parts of an irrigation system are designed by
the manufacturer to operate.
(ss) "overhead sprinkler irrigation systems" means systems that deliver water through the air (e.g., spray
heads and rotors).
(tt) "overspray" means the irrigation water which is delivered beyond the target area.
(uu) "permit" means an authorizing document issued by local agencies for new construction or
rehabilitated landscapes.
(vv) "pervious" means any surface or material that allows the passage of water through the material and
into the underlying soil.
(-,vw) "plant factor" or "plant water use factor" is a factor , when multiplied by ETo, estimates the
amount of water needed by plants. For purposes of this 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
5
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factor range for high water use plants is 0.7 to 1.0. Plant factors cited in this ordinance are derived from
the Department of Water Resources 2000 publication "Water Use Classification of Landscape Species ".
(xx) "precipitation rate" means the rate of application of water measured in inches per hour.
(yy) "project applicant" means the individual or entity submitting a Landscape Documentation Package
required under Section 492.3, 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.
(zz) "rain sensor" or "rain sensing shutoff device" means a component which automatically suspends an
irrigation event when it rains.
(aaa) "record drawing" or "as- builts" means a set of reproducible drawings which show significant
changes in the work made during construction and which are usually based on drawings marked up in
the field and other data furnished by the contractor.
(bbb) "recreational area" means areas dedicated to active play such as parks, sports fields, and golf
courses where turf provides a playing surface.
(ccc) "recycled water ", `reclaimed water ", or "treated sewage effluent 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 constrmption.
(ddd) `reference evapotranspiration" or "ETo" means a standard measurement of environmental
parameters which affect the water use of plants. ETo is expressed in inches per day, month, or year as
represented in Section 495.1, 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 Allowance so that regional differences in climate can be
accommodated.
(eee) "rehabilitated landscape" means any re- landscaping project that requires a permit, plan check, or
design review, meets the requirements of Section 490. 1, and the modified landscape area is equal to or
greater than 2,500 square feet, is 50% of the total landscape area, and the modifications are completed
within one year.
(fft) "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.
(ggg) "soil moisture sensing device" or "soil moisture sensor" means a device that measures the amount
of water in the soil. The device may also suspend or initiate an irrigation event.
(hhh) "soil texture" means the classification of soil based on its percentage of sand, silt, and clay.
(iii) "Special Landscape Area" (SLA) means an area of the landscape dedicated solely to edible plants,
areas irrigated with recycled water, water features using recycled water and areas dedicated to active
play such as parks, sports fields, golf courses, and where turf provides a playing surface.
Ojj) "sprinkler head" means a device which delivers water through a nozzle.
(kkk) "static water pressure" means the pipeline or municipal water supply pressure when water is not
flowing.
(111) "station" means an area served by one valve or by a set of valves that operate simultaneously.
(mmm) "swing joint' means an irrigation component that provides a flexible, leak -free connection
between the emission device and lateral pipeline to allow movement in any direction and to prevent
equipment damage.
(nmi) "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.
(000) "valve" means a device used to control the flow of water in the irrigation system.
(ppp) "water conserving plant species" means a plant species identified as having a low plant factor.
(qqq) "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
IQ
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the high water use hydrozone of the landscape area. Constructed wetlands used for on -site wastewater
treatment or stonrtwater best management practices that are not irrigated and used solely for water
treatment or stormwater retention are not water features and, therefore, are not subject to the water
budget calculation.
(rrr) "watering window" means the time of day irrigation is allowed.
(sss) "W UCOLS" means the Water Use Classification of Landscape Species published by the University
of California Cooperative Extension, the Department of Water Resources and the Bureau of
Reclamation, 2000.
Note: Authority Cited: Section 65595, Government Code. Reference: Sections 65592, 65596,
Government Code.
§ 492. Provisions for New Construction or Rehabilitated Landscapes.
(a) A local agency may designate another agency, such as a water purveyor, to implement some or all of
the requirements contained in this ordinance. Local agencies may collaborate with water purveyors to
define each entity's specific responsibilities relating to this ordinance.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.1 Compliance with Landscape Documentation Package.
(a) Prior to constriction, the local agency shall:
(1) provide the project applicant with the ordinance and procedures for permits, plan checks, or design
reviews;
(2) review the Landscape Documentation Package submitted by the project applicant;
(3) approve or deny the Landscape Documentation Package;
(4) issue a permit or approve the plan check or design review for the project applicant: and
(5) upon approval of the Landscape Documentation Package, submit a copy of the Water Efficient
Landscape Worksheet to the local water purveyor.
(b) Prior to construction, the project applicant shall:
(1) submit a Landscape Documentation Package to the local agency.
(c) Upon approval of the Landscape Documentation Package by the local agency, the project applicant
shall:
(1) receive a permit or approval of the plan check or design review and record the date of the permit in
the Certificate of Completion;
(2) submit a copy of the approved Landscape Documentation Package along with the record drawings,
and any other information to the property owner or his /her designee; and
(3) submit a copy of the Water Efficient Landscape Worksheet to the local water purveyor.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.2 Penalties.
(a) A local agency may establish and administer penalties to the project applicant for non - compliance
with the ordinance to the extent permitted by law.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
7
M
§ 492.3 Elements of the Landscape Documentation Package.
(a) The Landscape Documentation Package shall include the following six (6) elements:
(1) project information;
(A) date
(B) project applicant
(C) project address (if available, parcel and/or lot number(s))
(D) total landscape area (square feet)
(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) checklist of all documents in Landscape Documentation Package
(H) project contacts to include contact information for the project applicant and property owner
(I) applicant signature and date with statement, "I agree to comply with the requirements of the water
efficient landscape ordinance and submit a complete Landscape Documentation Package ".
(2) Water Efficient Landscape Worksheet;
(A) hydrozone information table
(B) water budget calculations
1. Maximum Applied Water Allowance (MAWA)
2. Estimated Total Water Use (ETWU)
(3) soil management report;
(4) landscape design plan;
(5) irrigation design plan; and
(6) grading design plan.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.4 Water Efficient Landscape Worksheet.
(a) A project applicant shall complete the Water Efficient Landscape Worksheet which contains two
sections (see sample worksheet in Appendix B):
(1) a hydrozone information table (see Appendix B, Section A) for the landscape project; and
(2) a water budget calculation (see Appendix B, Section B) for the landscape project. For the calculation
of the Maximum Applied Water Allowance and Estimated Total Water Use, a project applicant shall use
the ETo values from the Reference Evapotranspiration Table in Appendix A. For geographic areas not
covered in Appendix A, use data from other cities located nearby in the same reference
evapotranspiration zone, as found in the CIMIS Reference Evapotranspiration Zones Map, Department
of Water Resources, 1999.
(b) Water budget calculations shall adhere to the following requirements:
(1) The plant factor used shall be from WUCOLS. The plant factor ranges from 0 to 0.3 for low water
use plants, from 0.4 to 0.6 for moderate water use plants, and from 0.7 to 1.0 for high water use plants.
(2) All water features shall be included in the high water use hydrozone and temporarily irrigated areas
shall be included in the low water use hydrozone.
(3) All Special Landscape Areas shall be identified and their water use calculated as described below.
(4) ETAF for Special Landscape Areas shall not exceed 1.0.
(c) Maximum Applied Water Allowance
The Maximum Applied Water Allowance shall be calculated using the equation:
MAWA = (ETo) (0.62) [(0.7 x LA) + (03 x SLA)]
0
h
The example calculations below are hypothetical to demonstrate proper use of the equations and do not
represent an existing and /or planned landscape project. The ETo values used in these calculations are
from the Reference Evapotranspiration Table in Appendix A, for planning purposes only. For actual
irrigation scheduling, automatic irrigation controllers are required and shall use current reference
evapotranspiration data, such as from the California Irrigation Management Information System
(CIMIS), other equivalent data, or soil moisture sensor data.
(1) Example MAWA calculation: a hypothetical landscape project in Fresno, CA with an irrigated
landscape area of 50,000 square feet without any Special Landscape Area (SLA= 0, no edible plants,
recreational areas, or use of recycled water). To calculate MAWA, the annual reference
evapotranspiration value for Fresno is 51.1 inches as listed in the Reference Evapotranspiration Table in
Appendix A.
MAWA = (ETo) (0.62) [(0.7 x LA) + (0.3 x SLA)]
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration (inches per year)
0.62 = Conversion Factor (to gallons)
0.7 = ET Adjustment Factor (ETAF)
LA = Landscape Area including SLA (square feet)
03 = Additional Water Allowance for SLA
SLA = Special Landscape Area (square feet)
MAWA = (51.1 inches) (0.62) [(0.7 x 50,000 square feet) + (0.3 x 0)]
= 1,108,870 gallons per year
To convert from gallons per year to hundred -cubic -feet per year:
= 1,108,870/748 = 1,482 hundred- cubic -feet per year
(100 cubic feet = 748 gallons)
(2) In this next hypothetical example, the landscape project in Fresno, CA has the same ETo value of
51.1 inches and a total landscape area of 50,000 square feet. Within the 50,000 square foot project, there
is now a 2,000 square foot area planted with edible plants. This 2,000 square foot area is considered to
be a Special Landscape Area.
MAWA = (ETo) (0.62) [(0.7 x LA) + (0.3 x SLA)]
MAWA = (51.1 inches) (0.62) [(0.7 x 50,000 square feet) + (03 x 2,000 square feet)]
= 31.68 x [35,000 + 600] gallons per year
= 31.68 x 35,600 gallons per year
= 1,127,808 gallons per year or 1,508 hundred- cubic -feet per year
(d) Estimated Total Water Use.
The Estimated Total Water Use shall be calculated using the equation below. The sum of the Estimated
Total Water Use calculated for all hydrozones shall not exceed MAWA.
ETWU = (ETo)(0.62) P FEHA + SLA
Where:
ETWU = Estimated Total Water Use per year (gallons)
ETo = Reference Evapotranspiration (inches)
PF = Plant Factor from WUCOLS (see Section 491)
HA = Hydrozone Area (high, medium, and low water use areas] (square feet)
SLA = Special Landscape Area (square feet)
0.62 = Conversion Factor
IE = Irrigation Efficiency (minimum 0.71)
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(1) Example ETWU calculation: landscape area is 50,000 square feet; plant water use type, plant factor,
and hydrozone area are shown in the table below. The ETo value is 51.1 inches per year. There are no
Special Landscape Areas (recreational area, area permanently and solely dedicated to edible plants, and
area irrigated with recycled water) in this example.
Hydrozone
Plant Hydrozone
Plant Water Factor Area (HA)
Us_e Type(s) (PF)* (square feet)
PF x HA
(square feet)
1
2
High
0.8
7,000
5,600
7,000
8,000
High
0.7
10,000
3
Medium
0.5
16,000
4
�5
Low
Low
_ 0.3
0.2
7,000
10,000
2,100
2,000
4
Low
0.3
Sum
24,700
*Plant Factor from WUCOLS
ETWU= (51.1) (0.62) 24,700 +0 I
0.71 ))
= 1,102,116 gallons per year
Compare ETWU with MAWA: For this example MAWA = (51.1) (0.62) [(0.7 x 50,000) + (0.3 x 0)] _
1;108,870 gallons per year. The ETWU (1,102,116 gallons per year) is less than MAWA (1,108,870
gallons per year). In this example, the water budget complies with the MAWA.
(2) Example ETWU calculation: total landscape area is 50,000 square feet, 2,000 square feet of which is
planted with edible plants. The edible plant area is considered a Special Landscape Area (SLA). The
reference evapotranspiration value is 51.1 inches per year. The plant type, plant factor, and hydrozone
area are shown in the table below.
Hydrozone
Plant Water
Use Type(s)
Plant
Factor
(PF)*
Hydrozone
Area (HA)
(square. feet)
PF x HA
(square feet)
1
High
0.8
7,000
5,600
2
High
0.7
9,000
6,300
3
Medium
0.5
15,000
7,500
4
Low
0.3
7,000
1100
5
Low
0.2
10,000
2,000
Sum
23,500
6
SLA
1.0
2,000
2,000
*Plant Factor from WUCOLS
ETWU = (51.1)(0.62)(23,500 + 2,000
`l 0.71 i
= (31.68) (33,099 + 2.000)
= 1,111,936 gallons per year
10
Jl
Compare ETWU with MAWA. For this example:
MAWA = (51.1) (0.62) [(0.7 x 50,000) + (0.3 x 2,000))
= 31.68 x [35,000 + 600)
= 31.68 x 35,600
= 1,127,808 gallons per year
The ETWU (1,111,936 gallons per year) is less than MAWA (1,127,808 gallons per year). For this
example, the water budget complies with the MAWA.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.5 Soil Management Report.
(a) 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 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:
1. soil texture;
2. infiltration rate determined by laboratory test or soil texture infiltration rate table;
3. pH;
4. total soluble salts;
5. sodium;
6. percent organic matter; and
7. recommendations.
(2) 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 local agency
as part of the Certificate of Completion.
(3) The soil analysis report shall be made available, in a timely manner, to the professionals preparing
the landscape design plans and irrigation design plans to make any necessary adjustments to the design
plans.
(4) The project applicant, or his /her designee, shall submit documentation verifying implementation of
soil analysis report recommendations to the local agency with Certificate of Completion.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.6 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. A landscape design plan meeting 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, providing the Estimated Total Water Use in the
landscape area does not exceed the Maximum Applied Water Allowance. To encourage the efficient use
of water, the following is highly recommended:
1. protection and preservation of native species and natural vegetation;
2. selection of water- conserving plant and turf species;
11
7vt
3. selection of plants based on disease and pest resistance;
4. selection of trees based on applicable local tree ordinances or tree shading guidelines; and
5. selection of plants from local and regional landscape program plant lists.
(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 492.7(a)(2)(D).
(C) Plants shall be selected and planted appropriately based upon their adaptability to the climatic,
geologic, and topographical conditions of the project site. To encourage the efficient use of water, the
following is highly recommended:
1. use the Sunset Western Climate Zone System 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, power lines]; and
3. consider the solar orientation for plant placement to maximize summer shade and winter solar gain.
(D) Turf is not allowed 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) A landscape design plan for projects in fire -prone areas shall address fire safety and prevention. A
defensible space or zone around a building or structure is required per Public Resources Code Section
4291(a) and (b). Avoid fire -prone plant materials and highly flammable mulches.
(F) The use of invasive andlor noxious plant species is strongly discouraged.
(G) 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 low -water use plants as a group.
(2) Water Features
(A) Recirculating water systems shall be used for water features.
(B) Where available, recycled water shall be used as a source for decorative water features.
(C) 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.
(3) Mulch and Amendments
(A) A minimum two inch (2 ") layer of mulch shall be applied on all exposed soil surfaces of planting
areas except in turf areas, creeping or rooting groundeovers, or direct seeding applications where mulch
is contraindicated.
(B) Stabilizing mulching products shall be used on slopes.
(C) The mulching portion of the seed /mulch slurry in hydro - seeded applications shall meet the mulching
requirement.
(D) Soil amendments shall be incorporated according to recommendations of the soil report and what is
appropriate for the plants selected (see Section 492.5).
(b) The landscape design plan, at a minimtnn, 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 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);
12
?3
(10) identify location and installation details of any applicable stormwater best management practices
that encourage on -site retention and infiltration of stormwater. Stormwater best management practices
are encouraged in the landscape design plan and examples include, but are not limited to:
(A) infiltration beds, swales, and basins that allow water to collect and soak into the
ground;
(B) constructed wetlands and retention ponds that retain water, handle excess flow, and filter pollutants;
and
(C) pervious or porous surfaces (e.g., permeable pavers or blocks, pervious or porous concrete, etc.) that
minimize runoff.
(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 ordinance and applied
them for the efficient use of water in the landscape design plan'; and
(13) bear the signature of a licensed landscape architect, licensed landscape contractor, or any other
person authorized to design a landscape. (See Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 56413,
5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business and Professions Code, Section 832.27 of Title16
of the California Code of Regulations, and Section 6721 of the Food and Agriculture Code.)
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code
and Section 135E Civil Code.
§ 492.7 Irrigation Design Plan.
(a) For the efficient use of water, an irrigation system shall meet all the requirements listed in this
section and the manufacturers' 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) Dedicated landscape water meters are highly recommended on landscape areas smaller than 5,000
square feet to facilitate water management.
(B) Automatic irrigation controllers utilizing either evapotranspiration or soil moisture sensor data shall
be required for irrigation scheduling in all irrigation systems.
(C) The irrigation system shall be designed 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.
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.
(D) 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.
(E) Manual shut -off valves (such as a gate valve, ball valve, or butterfly valve) shall be required, as
close as possible to 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.
13
l `f
(F) 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 local agency code (i.e., public health)
for additional backflow prevention requirements.
(G) High flow sensors that detect and report high flow conditions created by system damage or
malfunction are recommended.
(H) 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.
(I) Relevant information from the soil management plan, such as soil type and infiltration rate, shall be
utilized when designing irrigation systems.
(J) The design of the irrigation system shall conform to the hydrozones of the landscape design plan.
(K) The irrigation system must be designed and installed to meet, at a minimum, the irrigation efficiency
criteria as described in Section 492.4 regarding the Maximum Applied Water Allowance.
(L) 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.
(M) In mulched planting areas, the use of low volume irrigation is required to maximize water
infiltration into the root zone.
(N) Sprinkler heads and other emission devices shall have matched precipitation rates, unless otherwise
directed by the manufacturer's recommendations.
(0) Head to head coverage is recommended. However, sprinkler spacing shall be designed to achieve
the highest possible distribution uniformity using the manufacturer's recommendations.
(P) Swing joints or other riser - protection components are required on all risers subject to damage that
are adjacent to high traffic areas.
(Q) Check valves or anti -drain valves are required for all irrigation systems.
(R) Narrow or irregularly shaped areas, including turf, less than eight (8) feet in width in any direction
shall be irrigated with subsurface irrigation or low volume irrigation system.
(S) 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 implanted. 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 specifies an alternative design or technology, as part of the Landscape
Documentation Package and clearly demonstrates strict adherence to irrigation system design criteria in
Section 492.7 (a)(1)(H)_ Prevention of overspray and runoff must be confirmed during the irrigation
audit.
(T) Slopes greater than 25% shall not be irrigated with an irrigation system with a precipitation rate
exceeding 0.75 inches per hour. This restriction may be modified if the landscape designer 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 hvdrozone 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.
(D) Individual hydrozones that mix plants of moderate and low water use, or moderate and high water
use, may be allowed if:
14
1. plant factor calculation is based on the proportions of the respective plant water uses and their plant
factor; or
2. the plant factor of the higher water using plant is used for calculations.
(E) Individual hydrozones that mix high and low water use plants shall not be permitted.
(F) 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. Use this valve number in the Hydrozone Information Table
(see Appendix B Section A). This table can also assist with the irrigation audit and programming the
controller.
(b) The irrigation design plan, at a minimum, shall contain:
(1) location and size of separate water meters for landscape;
(2) 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 ininute), application rate (inches per hour), and design operating pressure
(pressure per square inch) for each station;
(5) recycled water irrigation systems as specified in Section 492.14;
(6) the following statement: "I have complied with the criteria of the ordinance and applied them
accordingly for the efficient use of water in the irrigation design plan'; and
(7) the signature of a licensed landscape architect, certified irrigation designer, licensed landscape
contractor, or any other person authorized to design an irrigation system. (See Sections 5500.1, 5615,
5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business and Professions
Code, Section 832.27 of Title 16 of the California Code of Regulations, and Section 6721 of the Food
and Agricultural Code.)
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.8 Grading Design Plan.
(a) For the efficient use of water, grading of a project site shall be designed to minimize soil erosion,
runoff, and water waste. A grading plan shall be submitted as part of the Landscape Documentation
Package. A comprehensive grading plan prepared by a civil engineer for other local agency permits
satisfies this requirement.
(1) The project applicant shall submit a landscape grading plan that indicates finished configurations attd
elevations of the landscape area including:
(A) height of graded slopes,
(B) drainage patterns;
(C) pad elevations;
(D) finish grade; and
(E) stormwater retention improvements, if applicable.
(2) To prevent excessive erosion and runoff, it is highly recommended that project applicants:
(A) grade so that all irrigation and normal rainfall remains within property lines and does not drain on to
non - permeable hardscapes;
(B) avoid disruption of natural drainage patterns and undisturbed soil; and
(C) avoid soil compaction in landscape areas.
(3) 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 a licensed professional as authorized by law.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
15
70
§ 492.9 Certificate of Completion.
(a) The Certificate of Completion (see Appendix C for a sample certificate) shall include the following
six (6) elements:
(1) project information sheet that contains:
(A) date;
(B) project naive;
(C) project applicant name, telephone, and mailing address;
(D) project address and location; and
(E) property owner name, telephone, and mailing address;
(2) certification by either the signer of the landscape design plan, the signer of the irrigation design plan,
or the licensed landscape contractor that the landscape project has been installed per the approved
Landscape Documentation Package;
(A) where there have been significant changes made in the field during construction, these `as- built' or
record drawings shall be included with the certification;
(3) irrigation scheduling parameters used to set the controller (see Section 492.10);
(4) landscape and irrigation maintenance schedule (see Section 492.11);
(5) irrigation audit report (see Section 492.12); and
(6) soil analysis report. if not submitted with Landscape Documentation Package, and documentation
verifying implementation of soil report recommendations (see Section 492.5).
(b) The project applicant shall:
(1) submit the signed Certificate of Completion to the local agency for review;
(2) ensure that copies of the approved Certificate of Completion are submitted to the local water
purveyor and property owner or his or her designee.
(c) The local agency shall:
(1) receive the signed Certificate of Completion from the project applicant;
(2) approve or deny the Certificate of Completion. If the Certificate of Completion is denied, the local
agency shall provide information to the project applicant regarding reapplication, appeal, or other
assistance.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.10 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:
(1) Irrigation scheduling shall be regulated by automatic irrigation controllers.
(2) Overhead irrigation shall be scheduled between 8:00 p.m. and 10:00 a.m. unless weather conditions
prevent it. If allowable hours of irrigation differ from the local water purveyor, the stricter of the two
shall apply. Operation of the irrigation system outside the normal watering window is allowed for
auditing and system maintenance.
(3) For implementation of the irrigation schedule, particular attention must be paid to irrigation run
times, emission device, flow rate, and current reference evapotranspiration, so that applied water meets
the Estimated Total Water Use. Total annual applied water shall be less than or equal to Maximum
Applied Water A] lowance (MAWA). Actual irrigation schedules shall be regulated by automatic
irrigation controllers using current reference evapotranspiration data (e.g., CIMIS) or soil moisture
sensor data.
(4) Parameters used to set the automatic controller shall be developed and submitted for each of the
following:
(A) the plant establishment period;
16
7'1
(B) the established landscape; and
(C) temporarily irrigated areas.
(5) Each irrigation schedule shall consider for each station all of the following that apply:
(A) irrigation interval (days between irrigation);
(B) irrigation run times (hours or minutes per irrigation event to avoid runoff);
(C) number of cycle starts required for each irrigation event to avoid runoff;
(D) amount of applied water scheduled to be applied on a monthly basis;
(E) application rate setting;
(F) root depth setting;
(G) plant type setting;
(I) soil type;
(I) slope factor setting;
(J) shade factor setting; and
(K) irrigation uniformity or efficiency setting.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.11 Landscape and Irrigation Maintenance Schedule.
(a) Landscapes shall be maintained to ensure water use efficiency. A regular maintenance schedule shall
be submitted with the Certificate of Completion.
(b) A regular maintenance schedule shall include, but not be limited to, routine inspection; adjustment
and repair of the irrigation system and its components; aerating and dethatching turf areas; replenishing
mulch; fertilizing; priming; weeding in all landscape areas, and removing and obstruction to emission
devices. Operation of the irrigation system outside the normal watering window is allowed for auditing
and system maintenance.
(c) Repair of all irrigation equipment shall be done with the originally installed components or their
equivalents.
(d) A project applicant is encouraged to implement sustainable or environmentally - friendly practices for
overall landscape maintenance.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.12 Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis.
(a) All landscape irrigation audits shall be conducted by a certified landscape irrigation auditor.
(b) For new construction and rehabilitated landscape projects installed after January 1, 2010, as
described in Section 490.1:
(1) the project applicant shall submit an irrigation audit report with the Certificate of Completion to the
local agency that may include, but is not limited to: inspection, system tune -up, system test with
distribution uniformity, reporting overspray or run off that causes overland flow, and preparation of an
irrigation schedule;
(2) the local agency shall administer programs that may include, but not be limited to, irrigation water
use analysis, irrigation audits, and irrigation surveys for compliance with the Maximum Applied Water
Allowance.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
17
1`b
§ 492.13 Irrigation Efficiency.
(a) For the purpose of determining Maximum Applied Water Allowance, average irrigation efficiency is
assumed to be 0.71. Irrigation systems shall be designed, maintained, and managed to meet or exceed an
average landscape irrigation efficiency of 0.71.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.14 Recycled Water.
(a) The installation of recycled water irrigation systems shall allow for the current and future use of
recycled water, unless a written exemption has been granted as described in Section 492.14(b).
(b) Irrigation systems and decorative water features shall use recycled water unless a written exemption
has been granted by the local water purveyor stating that recycled water meeting all public health codes
and standards is not available and will not be available for the foreseeable future.
(c) All recycled water irrigation systems shall be designed and operated in accordance with all
applicable local and State laws.
(d) Landscapes using recycled water are considered Special Landscape Areas. The ET Adjustment
Factor for Special Landscape Areas shall not exceed 1.0.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.15 Stormwater Management.
(a) Stonnwater management practices minimize runoff and increase infiltration which recharges
groundwater and improves water quality. Implementing stormwater best management practices into the
landscape and grading design plans to minimize runoff and to increase on -site retention and infiltration
are encouraged.
(b) Project applicants shall refer to the local agency or Regional Water Quality Control Board for
information on any applicable stormwater ordinances and stormwater management plans.
(c) Rain gardens; cisterns, and other landscapes features and practices that increase rainwater capture
and create opportunities for infiltration and/or onsite storage are recommended.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 492.16 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.
(1) A local agency shall provide information to owners of new, single - family residential homes
regarding the design, installation, management, and maintenance of water efficient landscapes.
(b) Model Homes. All model homes that are landscaped shall use signs and written information to
demonstrate the principles of water efficient landscapes described in this ordinance.
(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.
(2) Information shall be provided about designing, installing, managing, and maintaining water efficient
landscapes.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
1.
§ 492.17 Environmental Review.
(a) The local agency must comply with the California Environmental Quality Act (CEQA), as
appropriate.
Note: Authority cited: Section 21082, Public Resources Code. Reference: Sections 21080, 21082, Public
Resources Code.
§ 493. Provisions for Existing Landscapes.
(a) A local agency may designate another agency, such as a water purveyor, to implement some or all of
the requirements contained in this ordinance. Local agencies may collaborate with water purveyors to
define each entity's specific responsibilities relating to this ordinance.
Note: Authority Cited: Section 65595. Government Code. Reference: Section 65596, Government Code.
§ 493.1 Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis.
(a) This section, 493.1, shall apply to all existing landscapes that were installed before January 1, 2010
and are over one acre in size.
(1) For all landscapes in 493.1(a) that have a water meter, the local agency shall administer programs
that may include, but not be limited to, irrigation water use analyses, irrigation surveys, and irrigation
audits to evaluate water use and provide recommendations as necessary to reduce landscape water use to
a level that does not exceed the Maximum Applied Water Allowance for existing landscapes. The
Maximum Applied Water Allowance for existing landscapes shall be calculated as: MAWA = (0.8)
(ETo)(LA)(0.62).
(2) For all landscapes in 493.1(a), that do not have a meter, the local agency shall administer programs
that may include, but not be limited to, irrigation surveys and irrigation audits to evaluate water use and
provide recommendations as necessary in order to prevent water waste.
(b) All landscape irrigation audits shall be conducted by a certified landscape irrigation auditor.
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
§ 493.2 Water Waste Prevention.
(a) Local agencies shall prevent water waste resulting from inefficient landscape irrigation by
prohibiting runoff from leaving the target landscape due to low head drainage, overspray, or other
similar conditions where water flows onto adjacent property, non - irrigated areas, walks, roadways,
parking lots, or structures. Penalties for violation of these prohibitions shall be established locally.
(b) Restrictions regarding overspray and runoff 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.
Note: Authority cited: Section 65594, Government Code. Reference: Section 65596, Government Code.
§ 494. Effective Precipitation.
(a) A local agency may consider Effective Precipitation (25% of annual precipitation) in tracking water
use and may use the following equation to calculate Maximum Applied Water Allowance:
MAWA— (ET() - Eppt) (0.62) [(0.7 x LA) + (03 x SLA)].
Note: Authority Cited: Section 65595, Government Code. Reference: Section 65596, Government Code.
19
5? 0
Appendices.
Appendix A. Reference Evapotranspiration (ETo) Table.
20
fs �
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
.Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
ALAMEDA
Fremont
1.5
1.9
3.4
4.7
5.4
6.3
6.7
6.0
4.5
3.4
1.8
1.5
47.0
Livermore
1.2
1.5
2,9
4.4
5.9
6.6
7.4
6.4
5.3
3.2
1.5
0.9
472
Oakland
1.5
1,5
2.8
3.9
5.1
5.3
6.0
5.5
4.8
3.1
1.4
0.9
41.8
Oakland Foothills
1.1
1.4
2.7
3.7
5.1
6.4
5.8
4.9
3.6
2.6
1.4
1.0
39.6
Pleasanton
0.8
1.5
2.9
4.4
5.6
6.7
7.4
6.4
4.7
3.3
1.5
1.0
46.2
Union City
1.4
1.8
3.1
4.2
5.4
5.9
6.4
5.7
44
3.1
1.5
1.2
44.2
ALPINE
Markleeville
0.7
0.9
2.0
3.5
5.0
6.1
73
6.4
4.4
2.6
1.2
0.5
40.6
AMADOR
Jackson
1.2
1.5
2.8
4.4
6.0
72
7.9
7.2
53
32
1.4
0.9
48.9
Shanandoalt Valley
1.0
1.7
2.9
4.4
5.6
6.8
7.9
7.1
5.2
3.6
1.7
1.0
48.8
BUTTE
Chico
1.2
1.8
2.9
4.7
6.1
7.4
8.5
7.3
5.4
3.7
1.7
1.0
51.7
Durham
1.1
1.8
3.2
5.0
6.5
7.4
7.8
6.9
5.3
3.6
1.7
1.0
51.1
Gridley
L2
1.8
3.0
4.7
6.1
7.7
8.5
7.1
5.4
3.7
1,7
1.0
51.9
Oroville
1.2
1.7
2.8
4.7
6.1
7.6
8.5
7.3
5.3
3.7
1.7
1.0
51.5
CALAVERAS
San Andreas
1.2
1.5
2.8
4.4
6.0
7.3
7.9
7.0
5.3
3.2
1.4
0.7
48.8
COLUSA
Colusa
1.0
1.7
3.4
5.0
6.4
7.6
8.3
7.2
5.4
3.8
1.8
1.1
52.8
Williams
1.2
1.7
2.9
4.5
6.1
7.2
8.5
7.3
53
3.4
1.6
1.0
50.8
CONTRA COSTA
Benicia
1.3
1.4
2.7
3.8
4.9
5,0
6.4
5.5
4.4
2.9
1.2
0.7
40.3
Brentwood
L0
1.5
2.9
4.5
6.1
7.1
7.9
6.7
5.2
3.2
1.4
0.7
483
Concord
1,l
1.4
2.4
4.0
5.5
5.9
7.0
6.0
4.8
3.2
1.3
0.7
43.4
Courtland
0.9
1.5
2.9
4.4
6.1
6.9
7.9
6.7
5.3
3.2
1.4
0.7
48.0
Martinez
12
1.4
2.4
3.9
53
5.6
6.7
5.6
4.7
11
1.2
0.7
41.8
Moraga
1.2
1.5
3.4
4.2
5.5
6.1
6.7
5.9
4.6
3.2
1.6
LO
44.9
Pittsburg
1.0
1.5
2.8
4.1
5.6
6.4
7.4
6.4
5.0
32
13
0.7
45.4
Walnut Creek
0.8
1.5
2.9
4.4
5.6
6.7
7.4
6.4
4.7
3.3
1.5
1.0
46.2
DEL NORTE
Crescent City
0.5
0.9
2.0
3.0
3.7
3.5
43
3.7
3.0
2.0
0.9
0.5
27.7
ELDORADO
Camino
0.9
1.7
2.5
3.9
5.9
Z2
7.8
6.8
5.1
3.1
1.5
0.9
47.3
FRESNO
Clovis
1.0
1.5
32
4.8
6,4
7.7
8.5
7.3
5.3
3.4
1.4
0.7
514
Coalinga
12
1.7
3.1
4,6
6.2
7.2
8.5
7.3
5.3
3.4
1.6
0.7
50.9
Firebaugh
LO
1.8
3.7
5.7
73
8.1
8.2
7.2
5.5
3.9
2.0
1.1
55.4
FivePoints
1.3
2.0
4.0
6.1
7.7
8.5
8.7
8.0
6.2
4.5
2.4
12
60.4
Fresno
0.9
1.7
3.3
4.8
6,7
7.8
8.4
7.1
5.2
3.2
1.4
0.6
51.1
Fresno State
0.9
1.6
3.2
5.2
7.0
8.0
8.7
7.6
5.4
3.6
1.7
0.9
53.7
Friant
1.2
1.5
3.1
4.7
6.4
7.7
85
7.3
5.3
3.4
1.4
0.7
51.3
Kerman
0.9
1.5
3.2
4.8
6.6
7.7
8.4
7.2
5.3
3.4
1.4
0.7
51.2
Kingsburg
LO
1.5
3.4
4.8
6.6
77
8.4
72
5.3
3.4
1.4
0.7
51.6
Mendota
1.5
2.5
4.6
6.2
7.9
8.6
8.8
7.5
5.9
4.5
2.4
1.5
61.7
Orange Cove
1.2
1.9
3.5
4.7
7A
8.5
8.9
7.9
5.9
3.7
1.8
1.2
56.7
Panoche
1.1
2.0
4.0
5.6
7.8
8.5
8.3
73
5.6
3.9
1.8
12
57.2
Parlier
1.0
1.9
3.6
5.2
6.8
7.6
8.1
7.0
5.1
3.4
1.7
0.9
52.0
Reedley
LI
1.5
3.2
4.7
64
7.7
8.5
7.3
5.3
3.4
1.4
0.7
51.3
Westlands
0.9
1.7
3.8
6.3
8.0
8.6
8.6
7.8
5.9
4.3
2.1
1.1
58.8
21
s;-
Appendix A - Reference Evapotranspiration (ETo)
Table*
Annual
County and City
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
GLENN
Orland
1.1
L8
3.4
5.0
6.4
75
7.9
6.7
5.3
3.9
1.8
1.4
52.1
Willows
1.2
1.7
2.9
4.7
6.1
7.2
8.5
7.3
5.3
3.6
1.7
1.0
51.3
HUMBOLDT
Eureka
0.5
L 1
2.0
3.0
3.7
3.7
3.7
3.7
3.0
2.0
0.9
0.5
275
Ferndale
0.5
1.1
2.0
3.0
3.7
3.7
3.7
3.7
3.0
2.0
0.9
0.5
27.5
Garberville
0.6
1.2
2.2
3.1
4.5
5.0
5.5
4.9
3.8
2.4
1.0
0.7
34.9
Hoopa
0.5
1.1
2.1
3.0
4.4
5.4
6.1
5.1
3.8
2.4
0.9
0.7
35.6
IMPERIAL
Brawley
2.8
3.8
5.9
8.0
10.4
11.5
11.7
10.0
84
6.2
3.5
2.1
84.2
Calipatria/Mulberry
2.4
3.2
5.1
6.8
8.6
9.2
9.2
8.6
7.0
5.2
3.1
2.3
70.7
El Centro
2.7
3.5
5.6
7.9
10.1
11.1
11.6
9.5
8.3
6.1
3.3
2.0
81.7
Holtville
2.8
3.8
5.9
7.9
10.4
11.6
12.0
10.0
8.6
6.2
3.5
2.1
84.7
Meloland
2.5
3.2
5.5
7.5
8.9
9.2
9.0
8.5
6.8
5.3
3.1
2.2
71.6
Palo Verde 11
2.5
3.3
5.7
6.9
8.5
8.9
8.6
7.9
6.2
4.5
2.9
23
68.2
Seeley
2.7
3.5
5.9
7.7
9.7
10.1
93
8.3
6.9
5.5
3.4
2.2
75.4
Westmoreland
2.4
33
5.3
6.9
8.7
9.6
9.6
8.7
6.9
5.0
3.0
2.2
71.4
Yuma
2.5
3.4
53
6.9
8.7
9.6
9.6
8.7
6.9
5.0
3.0
2.2
71.6
INYO
Bishop
1.7
2.7
4.8
6.7
8.2
10.9
7.4
9.6
7.4
4.8
2.5
1.6
68.3
Death Valley Jet
2.2
3.3
5.4
7.7
9.8
11.1
11.4
10.1
83
5.4
2.9
1.7
79.1
Independence
1.7
2.7
3.4
6.6
8.5
9.5
9.8
8.5
7.1
3.9
2.0
1.5
65.2
Lower Haiwee Res.
1.8
2.7
4.4
7.1
8.5
9.5
9.8
8.5
7.1
4.2
2.6
1.5
67.6
Oasis
2.7
2.8
5.9
8.0
10.4
11.7
11.6
10.0
8.4
6.2
3.4
2.1
83.1
KERN
Arvin
1.2
1.8
3.5
4.7
6.6
7.4
8.1
7.3
5.3
3.4
1.7
1.0
51.9
Bakersfield
1.0
1.8
3.5
4.7
6.6
7.7
8.5
7.3
5.3
3.5
1.6
0.9
52.4
Bakersfield /Bonanza
1.2
22
3.7
5.7
7.4
8.2
8.7
7.8
5.7
4.0
2.1
1.2
57.9
Bakersfield /Greenlee
1.2
2.2
3.7
5.7
7.4
8.2
8.7
7.8
5.7
4.0
2.1
1.2
57.9
Belridge
1.4
2.2
4.1
5.5
7.7
8.5
8.6
7.8
6.0
3.8
2.0
1.5
59.2
Blackwells Corner
1.4
2.1
3.8
5.4
7.0
7.8
8.5
7.7
5.8
3.9
1.9
1.2
56.6
Buttonwillow
1.0
1.8
3.2
4.7
6.6
7.7
8.5
7.3
5.4
3.4
1.5
0.9
52.0
China Lake
2.1
32
5.3
7.7
9.2
10.0
11.0
9.8
7.3
4.9
2.7
1.7
74.8
Delano
0.9
1.8
3.4
4.7
6.6
7.7
8.5
7.3
5.4
3.4
1.4
0.7
52.0
Famoso
1.3
1.9
3.5
4.8
6.7
7.6
8.0
7.3
5.5
3.5
1.7
1.3
53.1
Grapevine
1.3
1.8
3.1
4.4
5.6
6.8
7.6
6.8
5.9
3.4
1.9
1.0
49.5
Inyokern
2.0
3.1
4.9
73
8.5
9.7
11.0
9.4
7.1
5.1
2.6
1.7
72.4
Isabella Dam
1.2
1.4
2.8
4.4
5.8
73
7.9
7.0
5.0
3.2
1.7
0.9
48.4
Lamont
1.3
2.4
4.4
4.6
6.5
7.0
8.8
7.6
5.7
3.7
1.6
0.8
54.4
Lost Hills
1.6
2.2
3.7
5.1
6.8
7.8
8.7
7.8
5.7
4.0
2.1
1.6
57.1
McFarland /Kern
1.2
2.1
3.7
5.6
7.3
8.0
8.3
7.4
5.6
4.1
2.0
1.2
56.5
Shafter
1.0
1.7
3.4
5.0
6.6
7.7
8.3
73
5.4
3.4
1.5
0.9
52.1
Taft
1.3
1.8
3.1
43
6.2
7.3
8.5
7.3
5.4
3.4
1.7
1.0
51.2
Tehachapi
1.4
1.8
3.2
5.0
6.1
7.7
7.9
73
5.9
3.4
2.1
1.2
52.9
KINGS
Caruthers
1.6
2.5
4.0
5.7
7.8
8.7
93
8.4
6.3
4.4
2.4
1.6
62.7
Corcoran
1.6
2.2
3.7
5.1
6.8
7.8
8.7
7.8
5.7
4.0
2.1
1.6
57.1
Hanford
0.9
1.5
3.4
5.0
6.6
7.7
8.3
7.2
5.4
3.4
1.4
0.7
51.5
Kettleman
1.1
2.0
4.0
6.0
7.5
8.5
9.1
8.2
6.1
4.5
2.2
1.1
60.2
Lemoore
0.9
1.5
3.4
5.0
6.6
7.7
83
7.3
5.4
3.4
1.4
0.7
51.7
Stratford
0.9
1.9
3.9
6.1
7.8
8.6
8.8
7.7
5.9
4.1
2.1
1.0
58.7
22
g.3
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dee
ETo
LAKE
Lakeport
1.1
13
2.6
3.5
5.1
6.0
7.3
6.1
4.7
2.9
1.2
0.9
42.8
Lower Lake
1.2
1.4
2.7
4.5
5.3
6.3
7.4
6.4
5.0
3.1
1.3
0.9
45.4
LASSEN
Buntingville
1.0
1.7
35
4.9
6.2
T3
8.4
7.5
5.4
3.4
1.5
0.9
51.8
Ravendale
0.6
1.1
2.3
4.1
5.6
6,7
7.9
7.3
4.7
2.8
1.2
0.5
44.9
Susanville
0.7
1.0
2.2
41
5.6
6.5
7.8
7.0
4.6
2.8
1.2
0.5
44.0
LOS ANGELES
Burbank
2.1
2.8
3.7
4.7
5.1
6.0
6.6
6.7
5.4
4.0
2.6
2.0
51.7
Claremont
2.0
2.3
3.4
4.6
5.0
6.0
7.0
7.0
5.3
4.0
2.7
2.1
513
El Dorado
1.7
2.2
3.6
4.8
5.1
5.7
5.9
5.9
4.4
3.2
2.2
1.7
463
Glendale
2.0
2.2
3.3
3.8
4.7
4.8
5.7
5.6
4.3
3.3
2.2
1.8
43.7
Glendora
2.0
2.5
3.6
4.9
5.4
6.1
7.3
6.8
5.7
4.2
2.6
2.0
53.1
Gorman
1.6
12
3.4
4.6
55
7.4
7.7
7.1
5.9
3.6
2.4
1.1
52.4
Hollywood Hills
21
2.2
3.8
5.4
6.0
6.5
6,7
6.4
5.2
3.7
2.8
2.1
52.8
Lancaster
2.1
3.0
4.6
5.9
85
9.7
11.0
9.8
7.3
4.6
2.8
1.7
71.1
Long Beach
1.8
2.1
3.3
3.9
4.5
4.3
5.3
4.7
3.7
2.8
1.8
1.5
39.7
Los Angeles
2.2
2.7
3.7
4,7
5.5
5.8
6.2
5.9
5.0
3.9
2.6
1.9
50.1
Monrovia
2.2
23
3.8
4.3
55
5.9
6.9
6.4
5.1
3.2
2.5
2.0
50.2
Palmdale
2.0
2.6
4.6
6.2
73
8,9
9.8
9.0
6.5
4.7
2.7
2.1
66.2
Pasadena
2.1
2.7
3.7
4.7
5.1
6.0
7.1
6.7
5.6
4.2
2.6
2.0
52.3
Pearblossom
1.7
2.4
3.7
4.7
73
7.7
9.9
7.9
6.4
4.0
2.6
1.6
59.9
Pomona
1.7
2.0
3.4
4.5
5.0
5.8
6.5
6.4
4.7
3.5
2.3
1.7
47.5
Redondo Beach
22
2.4
3.3
3.8
4.5
4.7
5.4
4.8
4.4
2.8
2.4
2.0
42.6
San Fernando
2.0
2.7
3.5
4.6
5.5
5.9
7.3
6.7
53
3.9
2.6
2.0
52.0
Santa Clarita
2.8
2.8
4.1
5.6
6.0
6.8
7.6
28
5.8
5.2
3.7
3.2
61,5
Santa Monica
1.8
2.1
3.3
4.5
4.7
5.0
54
5.4
3.9
3.4
2.4
2.2
44.2
MADERA
Chowchilla
LO
14
32
4.7
6.6
7.8
8.5
7.3
5.3
3.4
1.4
0.7
51.4
Madera
0.9
1.4
3.2
4.8
6.6
7.8
8.5
7.3
5.3
3.4
1.4
0.7
51.5
Raymond
1.2
1.5
3.0
4.6
6.1
7.6
8.4
7.3
52
3.4
1.4
0.7
50.5
MARIN
Black Point
1.1
1.7
3.0
4.2
5.2
6.2
6.6
5.8
43
2.8
1.3
0.9
43.0
Novato
13
1.5
2.4
3.5
4.4
6.0
5.9
5.4
4.4
2.8
1.4
0.7
39.8
Point San Pedro
1.1
1.7
3.0
4.2
5.2
6.2
6.6
5.8
4.3
2.8
13
0.9
43.0
San Rafael
1.2
I.3
2.4
33
4.0
4.8
4.8
4.9
4.3
2.7
13
0.7
35.8
MARIPOSA
Coulterville
1.1
1.5
2.8
4.4
59
73
8.1
7.0
5.3
3.4
1.4
0.7
48.8
Mariposa
1.1
1.5
2.8
4.4
5.9
7.4
8.2
7.1
5.0
3.4
1.4
0,7
49.0
Yosemite Village
0.7
1.0
2.3
3.7
5,1
6.5
7.1
6.1
4.4
2.9
1.1
0.6
41.4
MENDOCINO
Fort Bragg
0.9
1.3
2.2
3.0
3.7
3.5
3.7
3.7
3.0
2.3
1.2
0.7
29.0
Hopland
LI
13
2.6
3.4
5.0
5.9
6.5
5.7
4.5
2.8
1.3
0.7
40.9
Point Arena
1.0
1.3
2.3
3.0
3.7
3.9
3.7
3.7
3.0
2.3
1.2
0.7
29.6
Sane] Valtey
1.0
1.6
3.0
4.6
6.0
7.0
8.0
7.0
5.2
3.4
1.4
0.9
49.1
Ukiah
1.0
1.3
2.6
3.3
5.0
5.8
6.7
5.9
4.5
2.8
13
0.7
40.9
MERCED
Kesterson
0.9
1.7
3.4
5.5
7.3
8.2
8.6
7.4
5.5
3.8
1.8
0.9
55.1
Los Banos
1.0
1.5
3.2
4.7
6.1
7A
8.2
7.0
5.3
3.4
1.4
0.7
50.0
Merced
1.0
1.5
12
4.7
6.6
7.9
8.5
7.2
5.3
3.4
1.4
0.7
51.5
23
-Z q
Appendix A - Reference Evapotranspiration (ETo) Table*
s�
Annual
County and City
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
MODOC
ModoclAlturas
0.9
1.4
2.8
3.7
5.1
6.2
7.5
6.6
4.6
2.8
1.2
0.7
43.2
MONO
Bridgeport
0.7
0.9
2.2
3.8
5.5
6.6
7.4
6.7
4.7
2.7
1.2
0.5
43.0
MONTEREY
Arroyo Seco
1.5
2.0
3.7
5.4
6.3
73
7.2
6.7
5.0
3.9
2.0
1.6
52.6
Castroville
14
L7
3.0
42
4.6
4.8
4.0
3.8
3.0
2.6
1.6
1.4
36.2
Gonzales
1.3
1.7
3.4
4.7
5.4
6.3
6.3
5.9
4.4
3.4
1.9
1.3
45.7
Greenfield
1.8
2,2
3.4
4.8
5.6
6.3
6.5
6.2
4.8
3.7
2.4
1.8
49.5
King City
1.7
2.0
3.4
4.4
4.4
5.6
6.1
6.7
6.5
5.2
2.2
1.3
49.6
King City -Oasis Rd.
1.4
1.9
3.6
5.3
6.5
73
7.4
6.8
5.1
4.0
2.0
1.5
52.7
Long Valley
1.5
1.9
3.2
4.1
5.8
6.5
7.3
6.7
5.3
3.6
2.0
12
49.1
Monterey
1.7
1.8
2.7
3.5
4.0
4.1
4.3
42
3.5
2.8
1.9
1.5
36.0
Pajaro
1.8
2.2
3.7
4.8
53
5.7
5.6
5.3
4.3
3.4
2.4
1.8
46.1
Salinas
1.6
1.9
2.7
3.8
4.8
4,7
5.0
4.5
4,0
2.9
1.9
13
39.1
Salinas North
12
1.5
2.9
4.1
4.6
5.2
4.5
4.3
3.2
2.8
1.5
1.2
36.9
San Ardo
1.0
1.7
3.1
4.5
5.9
7.2
8.1
7.1
5.1
3.1
1.5
1.0
49.0
San Juan
1.8
2.1
3.4
4.6
5.3
5.7
5,5
4.9
3.8
3.2
22
1.9
44.2
Soledad
1.7
2.0
3.4
4.4
5.5
5.4
6.5
6.2
5.2
3.7
2.2
1.5
47.7
NAPA
Angwin
1.8
1.9
3.2
4.7
5.8
7.3
8.1
7.1
5.5
4.5
2.9
2.1
54.9
Cameros
0.8
1.5
3.1
4.6
5.5
6.6
6.9
6.2
4.7
3.5
1.4
1.0
45.8
Oakville
1.0
1.5
2.9
4.7
5.8
6.9
7.2
6.4
4.9
33.5
1.6
12
47.7
St Helena
1.2
1.5
2.8
3.9
5.1
6.1
7.0
6.2
4.8
3.l
1.4
0.9
44.1
Yountville
1.3
1.7
2.8
3.9
5.1
6.0
7.1
6.1
4.8
3.1
1.5
0.9
443
NEVADA
Grass Valley
LI
1.5
'16
4.0
5.7
7.1
7.9
7.1
5.3
3.2
1.5
0.9
48.0
Nevada City
1.1
1.5
2.6
3.9
5.8
6.9
7.9
7.0
5.3
3.2
1.4
0.9
47.4
ORANGE
Irvine
2.2
2.5
3.7
4.7
5.2
5.9
6.3
6.2
4.6
3.7
2.6
2.3
49.6
Laguna Beach
2.2
2.7
3.4
3.8
4.6
4.6
4.9
4.9
4.4
3.4
2.4
2.0
43.2
Santa Ana
22
2.7
3.7
4.5
4.6
5.4
6.2
6.1
4.7
3.7
2.5
2.0
48.2
PLACER
Auburn
1.2
1.7
2.8
4.4
6.1
7.4
83
7.3
5.4
3.4
1.6
1.0
50.6
Blue Canyon
0.7
1.1
2.1
3.4
4.8
6.0
7.2
6.1
4.6
2.9
0.9
0.6
40.5
Colfax
1.1
1 5
2.6
4.0
5.8
7.1
7.9
7.0
5.3
3.2
1.4
0.9
47.9
Roseville
1.1
1.7
3.1
4.7
6.2
7.7
8.5
73
5.6
3.7
1.7
1.0
52.2
Soda Springs
0.7
0.7
1.8
3.0
4.3
5.3
6.2
5.5
4.1
2.5
0.7
0.7
35.4
Tahoe City
0.7
0.7
1.7
3.0
43
5.4
6.1
5.6
4.1
2.4
0.8
0.6
35.5
Truckee
0.7
0.7
1.7
3.2
4.4
5.4
6.4
5.7
4.1
2.4
0.8
0.6
36.2
PLUMAS
Portola
0.7
0.9
1.9
3.5
4.9
5.9
7.3
5.9
4.3
2.7
0.9
0.5
39.4
Quincy
0.7
0.9
2.2
3.5
4.9
5.9
7.3
5.9
4.4
2.8
1.2
0.5
40.2
RIVERSIDE
Beaumont
10
2.3
3.4
4.4
6.1
7.1
7.6
7.9
6.0
3.9
2.6
1.7
55.0
Blythe
2.4
3.3
5.3
6.9
8.7
9.6
9.6
8.7
6.9
5.0
3.0
2.2
71.4
Cathedral City
1.6
2.2
3.7
5.1
6.8
7.8
8.7
7.8
5.7
4.0
2.1
1.6
57.1
Coachella
2.9
4.4
6.2
8.4
10.5
11.9
12.3
10.1
8.9
62
3.8
2.4
88.1
Desert Center
2.9
4.1
6.4
8.5
11.0
12.1
12.2
11.1
9.0
6.4
3.9
2.6
90.0
Elsinore
2.1
2.8
3.9
4.4
5.9
7.1
7.6
7.0
5.8
3.9
2.6
1.9
55.0
Indio
3.l
3.6
6.5
8.3
10.5
11.0
10.8
9.7
8.3
5.9
3.7
2.7
83.9
24
s�
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
.Ian
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
RIVERSIDE
La Quinta
2.4
2.8
52
6.5
8.3
8.7
8.5
7.9
65
4.5
2.7
2.2
662
Mecca
2.6
3.3
5.7
7.2
8.6
9.0
8.8
8.2
6.8
5.0
3.2
2.4
70.8
Oasis
2.9
3.3
5.3
6.1
8.5
8.9
8.7
7.9
6.9
4.8
2.9
23
68.4
Palm Deser
2.5
3.4
5.3
6.9
8.7
9.6
9.6
8.7
6.9
5.0
3.0
2.2
71.6
Palm Springs
2.0
2.9
4.9
72
8.3
8.5
11.6
8.3
7.2
5.9
2.7
1.7
71.1
Rancho California
1.8
2.2
3.4
4.8
5.6
6.3
6.5
6.2
4.8
3.7
2.4
1.8
49.5
Rancho Mirage
2.4
3.3
5.3
6.9
8.7
9.6
9.6
8.7
6.9
5.0
3.0
2.2
71.4
Ripley
2.7
3.3
5.6
7.2
8.7
8.7
8.4
7.6
6.2
4.6
2.8
2.2
67.8
Salton Sea North
2.5
3.3
5.5
7.2
8.8
9.3
9.2
8.5
6.8
5.2
3.1
2.3
71.7
Temecula East 11
23
2.4
4.1
4.9
6.4
7.0
7.8
7.4
5.7
4.1
2.6
2.2
56.7
Thermal
2.4
3.3
5.5
7.6
9.1
9.6
9.3
8.6
7.1
5.2
3.1
2.1
72.8
Riverside UC
2.5
2.9
4.2
5.3
5.9
6.6
7.2
6.9
5.4
4.1
2.9
2.6
56.4
Winchester
2.3
2.4
4.1
4.9
6.4
6.9
7.7
7.5
6.0
3.9
2.6
2.1
56.8
SACRAMENTO
Fair Oaks
LO
1.6
3.4
4.1
6.5
7.5
8.1
7.1
5.2
3.4
1.5
1.0
501
Sacramento
1.0
1.8
3.2
4.7
6.4
7.7
8.4
7.2
5.4
3.7
1.7
0.9
51.9
Twitchell Island
1.2
1.8
3.9
5.3
7.4
8.8
9.1
7.8
5.9
3.8
1.7
1.2
57.9
SAN BENITO
Hollister
1.5
1.8
3.1
4.3
5.5
5.7
6.4
5.9
5.0
3.5
1.7
1.1
45.1
San Benito
1,2
1.6
3.1
4.6
5.6
6.4
6.9
6.5
4.8
3.7
1.7
1.2
47.2
San Juan Valley
i.4
1.8
3.4
4.5
6.0
6.7
7.1
6.4
5.0
3.5
1.8
1.4
49.1
SAN BERNARDINO
Baker
2.7
3.9
6.1
S.
10.4
11.8
12.2
11.0
8.9
6.1
3.3
2.1
86.6
Barstow NE
2.2
2.9
53
6.9
9.0
10.1
9.9
8.9
6.8
4.8
2.7
2.1
71.7
Big Bear Lake
1.8
2.6
4.6
6.0
7.0
7.6
8.1
7.4
5.4
4.1
2.4
1.8
58.6
Chino
2.1
2.9
3.9
4.5
5.7
6.5
73
7.1
5.9
4.2
2.6
2.0
54.6
Crestline
1.5
1.9
3.3
4.4
5.5
6.6
7.8
7.t
5.4
3.5
2.2
1.6
50.8
Lake Arrowhead
1.8
2.6
4.6
6.0
7.0
7.6
8.1
7.4
5.4
4.1
2.4
1.8
58.6
Lucerne Valley
2.2
2.9
5.1
6.5
9.1
11.0
11.4
9.9
7.4
5.0
3.0
1.8
753
Needles
3.2
4.2
6.6
8.9
11.0
12.4
12.8
11.0
8.9
6.6
4.0
2.7
92.1
Newberry Springs
2.1
2.9
5.3
8.4
9.8
10.9
11.1
9.9
7.6
5.2
3.1
2.0
78.2
San Bernardino
2.0
2.7
3.8
4.6
5.7
6.9
7.9
7.4
5.9
4.2
2.6
2.0
55.6
Twentynine Palms
2.6
3.6
5.9
7.9
10.1
11.2
11.2
10.3
8.6
5.9
3.4
2.2
82.9
Victorville
2.0
2.6
4.6
6.2
7.3
8.9
9.8
9.0
6.5
4.7
2.7
2.1
66.2
SAN DIEGO
Chula Vista
2.2
2.7
3.4
3.8
4.9
4.7
5.5
4.9
4.5
3.4
2.4
10
44.2
Escondido SPV
2.4
2.6
3.9
4.7
5.9
6.5
7.1
6.7
5.3
3.9
2.8
23
54.2
Miramar
2.3
2.5
3.7
4.1
5.1
5.4
6.1
5.8
4.5
33
2.4
2.1
47.1
Oceanside
2.2
2.7
3.4
3.7
4.9
4.6
4.6
5.1
4.1
3.3
2.4
2.0
42.9
Otav Lake
2.3
27
3.9
4.6
5.6
5.9
6.2
6.1
4.8
3.7
2.6
2.2
50.4
Pine Valley
1.5
24
3.8
5.1
6.0
7.0
7.8
7.3
6.0
4.0
22
1.7
54.8
Ramona
2.1
2.1
3.4
4.6
5.2
6.3
6.7
6.8
5.3
4.1
2.8
2.1
51.6
San Diego
2.1
2.4
3.4
4.6
5.1
53
5.7
5.6
4.3
3.6
2.4
2.0
46.5
Santee
2.1
2.7
3.7
4.5
5.5
6.1
6.6
6.2
5.4
3.8
2.6
2.0
51.1
Torrey Pines
22
2.3
3.4
3.9
4.0
4.1
4.6
4.7
3.8
2.8
2.0
2.0
39.8
Warner Springs
1.6
2.7
3.7
4.7
5.7
7.6
8.3
7.7
6.3
4.0
2.5
1.3
56.0
SAN FRANCISCO
San Francisco
1.5
t3
2.4
3.0
3.7
4.6
4.9
4.8
4.1
2.8
1.3
0.7
35.1
SAN JOAQUIN
Farrington
1.5
1.5
2.9
4.7
6.2
7.6
8.1
6.8
5.3
3.3
1.4
0.7
50.0
25
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dee
ETo
SAN JOAQUIN
Lodi West
1.0
1.6
3.3
4.3
6.3
6.9
7.3
6.4
4.5
3.0
1.4
0.8
46.7
Manteca
0.9
1.7
3.4
5.0
6.5
7.5
8.0
7.1
5.2
3.3
1.6
0.9
51.2
Stockton
0.8
1.5
2.9
4.7
6.2
7.4
8.1
6.8
5.3
32
1.4
0.6
49.1
Tracy
LO
L5
2.9
4S
6.1
7.3
7.9
6.7
53
3.2
1.3
0.7
48.5
SAN LUIS OBISPO
Arroyo Grande
2.0
22
33.2
3.8
43
4.7
43
4.6
3.8
3.2
2.4
1.7
40.0
Atascadero
1.2
1.5
2.8
3.9
4.5
6.0
6.7
6.2
5.0
3.2
1.7
1.0
43.7
Morro Bay
2.0
2.2
3.1
3.5
4.3
4.5
4.6
4.6
3.8
3.5
2.1
1.7
399
Nipomo
2.2
2.5
3.8
5.1
5.7
62
6.4
6.1
4.9
4.1
2.9
2.3
52.1
Paso Robles
1.6
2.0
3.2
4.3
5.5
6.3
7.3
6.7
5.1
3.7
2.1
1.4
49.0
San Luis Obispo
2.0
2.2
3.2
4.1
4.9
5.3
4.6
5.5
4.4
3.5
2.4
1.7
43.8
San Miguel
1.6
2.0
32
4.3
5.0
6.4
7.4
6.8
5.1
3.7
2.1
1.4
49.0
San Simeon
2.0
2.0
2.9
3.5
4.2
4.4
4.6
4.3
3.5
3.1
2.0
1.7
38.1
SAN MATEO
Hal Moon Bay
1.5
1.7
2.4
3.0
3.9
4.3
4.3
42
3.5
2.8
1.3
1.0
33.7
Redwood City
1.5
1.8
2.9
3.8
5.2
5.3
6.2
5.6
4.8
3.1
1.7
1.0
42.8
Woodside
1.8
2.2
3.4
4.8
5.6
6.3
6.5
6.2
4.8
3.7
2.4
1.8
49.5
SANTA BARBARA
Betteravia
2.1
2.6
4.0
5.2
6.0
5.9
5.8
5.4
4.1
3.3
2.7
2.1
49.1
Carpenteria
10
2.4
3.2
3.9
4.8
5.2
5.5
5.7
4.5
3.4
2.4
2.0
44.9
Cuyama
2.1
2.4
3.8
5.4
6.9
7.9
8.5
7.7
5.9
4.5
2.6
2.0
59.7
Goleta
2.1
2.5
3.9
5.1
5.7
5.7
5.4
5.4
4.2
3.2
2.8
2.2
48.1
Goleta Foothills
2.3
2.6
3.7
5.4
53
5.6
5.5
5,7
4.5
3.9
2.8
2.3
49.6
Guadalupe
2.0
2.2
3.2
3.7
4.9
4.6
4.5
4.6
4.1
3.3
2.4
1.7
41.1
Lompoc
2.0
22
3.2
3.7
4.8
4.6
4.9
4.8
3.9
3.2
2.4
1.7
41.1
Los Alamos
1.8
2.0
3.2
4.1
4.9
5.3
5.7
5.5
4.4
3.7
2.4
1.6
44.6
Santa Barbara
2.0
2.5
32
3.8
4.6
5.1
5.5
4.5
3.4
2.4
1.8
1.8
40.6
Santa Maria
1.8
23
3.7
5.1
5.7
5.8
5.6
5.3
4.2
3.5
2.4
1.9
47.4
Santa Ynez
1.7
12
3.5
5.0
5.8
6.2
6.4
6.0
4.5
3.6
22
1.7
48.7
Sisyuoc
2.1
2.5
3.8
4.1,
6.1
63
6.4
5.8
4.7
3.4
2.3
1.8
49.2
Solvang
2.0
2.0
33
4.3
5.0
5.6
6.1
5.6
4.4
1.7
2.2
1.6
45.6
SANTA CLARA
Gilroy
1.3
1.8
3.1
4.1
5.3
5.6
6.1
5.5
4.7
3.4
1.7
1.1
43.6
Los Gatos
1.5
1.8
2.8
3.9
5.0
5.6
6.2
5.5
4.7
3.2
1.7
1.1
42.9
Morgan Hill
1.5
1.8
3.4
4.2
63
7.0
7.1
6.0
5.1
3.7
1.9
1.4
49.5
Palo Alto
1.5
1.8
2.8
3.8
5.2
5.3
62
5.6
5.0
3.2
1.7
1.0
43.0
San Jose
1.5
1.8
3.1
4.1
5.5
5.8
6.5
5.9
5.2
3.3
1.8
1.0
45.3
SANTA CRUZ
De Laveaga
1.4
1.9
3.3
4.7
4.9
5.3
5.0
4.8
3.6
3.0
1.6
1.3
40.8
Green Valley Rd
1.2
1.8
3.2
4.5
4.6
5.4
52
5.0
3.7
3.1
1.6
1.3
40.6
Santa Cruz
1.5
1.8
2.6
3.5
43
4.4
4.8
4.4
3.8
2.8
1.7
12
36.6
Watsonville
15
1.8
2.7
3.7
4.6
4.5
4.9
4.2
4.0
2.9
1.8
1.2
37.7
Webb
1.8
12
3.7
4.8
5.3
5.7
5.6
5.3
4.3
3.4
2.4
1.8
462
SHASTA
Burney
0.7
1.0
2.1
3.5
4.9
5.9
7.4
6.4
4.4
2.9
0.9
0.6
40.9
Fall River Mills
0.6
1.0
2.1
3.7
5.0
6.1
7.8
6.7
4.6
2.8
0.9
OS
41.8
Glenburn
0.6
1.0
2.1
3.7
5.0
6.3
7.8
6.7
4.7
2.8
0.9
0.6
42.1
McArthur
0.7
1.4
2.9
42
5.6
6.9
8.2
7.2
5.0
3.0
1.1
0.6
46.8
Redding
1.2
1.4
2.6
4.1
5.6
7.1
8.5
7.3
5.3
3.2
1.4
0.9
48.8
26
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
SIERRA
Downieville
0.7
1.0
2.3
3.5
5.0
6.0
7.4
6.2
4.7
2.8
0.9
0.6
41.3
Sierraville
0.7
1.1
2.2
3.2
4.5
5.9
73
6.4
4.3
2.6
0.9
0.5
39.6
SISKIYOU
Happy Camp
0.5
0.9
2.0
3,0
4.3
5.2
6.1
5.3
4.1
2.4
0.9
0.5
35.1
MacDoel
1.0
1.7
3.1
4.5
5.9
72
8.1
7.1
5.1
3.l
1.5
1.0
49.0
Mt Shasta
0.5
0.9
2.0
3.0
4.5
53
6.7
5.7
4.0
2.2
0.7
0.5
36.0
Tule lake FS
0.7
1.3
2.7
4.0
5.4
6.3
7.1
6.4
4.7
2.8
1.0
0.6
42.9
Weed
0.5
0.9
2.0
2.5
45
5.3
6.7
5.5
3.7
2.0
0.9
0.5
34.9
Yreka
0.6
0.9
2.1
3.0
4.9
5.8
7.3
6.5
43
2.5
0.9
0.5
39.2
SOLANO
Dixon
0.7
1.4
3.2
5.2
63
7.6
8.2
7.2
5.5
4.3
1.6
1.1
52.1
Fairfield
1.1
1.7
2.8
4.0
5.5
6.1
7.8
6.0
4.8
3.1
1.4
0.9
45.2
Hastings Tract
1.6
2.2
3.7
5.1
6.8
7.8
8.7
7.8
5.7
4.0
2.1
1.6
57.1
Putah Creek
1.0
1.6
3.2
4.9
6.1
7.3
7.9
7.0
5.3
3.8
1.8
1.2
51.0
Rio Vista
0.9
1.7
2.8
4.4
5,9
6.7
7.9
6.5
5.1
3.2
13
0.7
47.0
Suisun Valley
0.6
1.3
3.0
4.7
5.8
7.0
7.7
6.8
5.3
3.8
1.4
0.9
48.3
Winters
0.9
1.7
3.3
5.0
6.4
75
7.9
7.0
5.2
3.5
1.6
1.0
51.0
SONOMA
Bennett Valley
1.1
1.7
12
4.1
5.5
6.5
6.6
5.7
4.5
3.1
1.5
0.9
44.4
Cloverdale
1.1
14
2.6
3.4
5.0
5.9
6.2
5.6
4.5
2.8
1.4
0.7
40.7
Fort Ross
1.2
1.4
2.2
3.0
3.7
4.5
4.2
4,3
3.4
2.4
1.2
0.5
31.9
Healdsburg
1.2
1.5
2.4
3.5
5.0
5.9
6.1
5.6
4.5
2.8
14
0.7
40.8
Lincoln
1.2
1.7
2.8
4.7
6.1
7.4
8.4
73
5.4
3.7
1.9
1.2
51.9
Petaluma
1.2
1.5
2.8
3.7
4.6
5.6
4.6
5.7
4.5
19
1.4
0.9
39.6
Santa Rosa
1.2
1.7
2.8
3.7
5.0
6.0
6.1
5.9
4.5
2.9
1.5
0.7
42.0
Valley of the Moon
1.0
1.6
3.0
4.5
5.6
6.6
7.1
63
4.7
3.3
1.5
1.0
46.1
Windsor
0.9
1.6
3.0
4.5
5.5
6.5
6.5
5.9
4.4
3.2
1.4
LO
44.2
STANISLAUS
Denair
1.0
1.9
3.6
4.7
7.0
7.9
8.0
6.1
5.3
3.4
1.5
1.0
51.4
La Grange
1.2
1.5
3.1
4.7
6.2
7.7
8.5
73
5.3
3.4
1.4
0.7
51.2
Modesto
0.9
1.4
3.2
4.7
6.4
7.7
8.1
6.8
5.0
3.4
1.4
0.7
49.7
Newman
1.0
1.5
3.2
4.6
6.2
7.4
8.1
6.7
5.0
3.4
1.4
0.7
49.3
Oakdale
1.2
1.5
32
4.7
6.2
7.7
8.1
7.1
5.1
3.4
1.4
0.7
50.3
Patterson
1.3
2.1
4.2
5.4
7.9
8.6
8.2
6.6
5.8
4.0
1.9
13
57.3
Turlock
0,9
1.5
3.2
4.7
6.5
7.7
8.2
7.0
S.1
3.4
1.4
0.7
50.2
SUTTER
Nicolaus
0.9
1.6
3.2
4.9
63
7.5
8.0
6.9
5.2
3.4
1.5
0.9
50.2
Yuba City
1.3
2.1
2.8
4.4
5.7
7.2
7.1
6.1
4.7
3.2
1.2
0.9
46.7
TEHAMA
Corning
1.2
1.8
2.9
4.5
6.1
7.3
8.1
7.2
5.3
3.7
1.7
1.1
50.7
Gerber
LO
1.8
3.5
5.0
6.6
7.9
8.7
7.4
5.8
4.1
1.8
1.1
54.7
Gerber Dryland
0.9
1.6
32
4.7
6.7
8.4
9.0
7.9
6.0
4.2
2.0
1.0
55.5
Red Bluff
1.2
1.8
2.9
4.4
5.9
7.4
8.5
7.3
5.4
3.5
1.7
1.0
51.1
TRINITY
Hay Fork
0.5
1.1
2.3
3.5
4.9
5.9
7.0
6.0
4.5
2.8
0.9
0.7
40.1
Weaverville
0.6
1.1
2.2
33
4.9
5.9
7.3
6.0
4.4
2.7
0.9
0.7
40.0
TULARE
Alpaugh
0.9
1.7
3.4
4.8
6.6
73
8.2
7.3
5.4
3.4
1.4
0.7
51.6
Badger
1.0
1.3
2.7
4.1
6.0
7.3
7.7
7.0
4.8
3.3
1.4
0.7
47.3
Delano
1.1
1.9
4.0
4.9
7.2
7.9
8.1
7.3
5.4
3.2
1.5
1.2
53.6
27
�Y
Appendix A - Reference Evapotranspiration (ETo) Table*
Annual
County and City
Jan Feb Mar Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
ETo
TULARE
Dinuba
1.1 1.5 3.2 4.7
6.2
7.7
8.5
7.3
5.3
3.4
1.4
0.7
51.2
Lindeove
0.9 1.6 3.0 4.8
6.5
7.6
8.1
7.2
5.2
3.4
1.6
0.9
50.6
Porterville
1.2 1.8 3.4 4.7
6.6
7.7
8.5
7.3
5.3
3.4
1.4
0.7
52.1
Visalia
0.9 1.7 33 5.1
6.8
7.7
7.9
6.9
4.9
3.2
1.5
0.8
50.7
TUOLUMNE
Groveland
L1 L5 2.8 4.1
5.7
7.2
7.9
6.6
S.I
3.3
1.4
0.7
47.5
Sonora
L l L5 18 4.1
5.8
7.2
7.9
6.7
5.1
32
1.4
0.7
47.6
VENTURA
Camarillo
2.2 15 3.7 4.3
5.0
5.2
5.9
5.4
4.2
10
2.5
2.1
46.1
Oxnard
2.2 15 3.2 3.7
4.4
4.6
5.4
4.8
4.0
3.3
2.4
2.0
42.3
Piro
2.8 2,8 4.1 5.6
6.0
6.8
7.6
7.8
5.8
5.2
3.7
3.2
61.5
Port Hueneme
2.0 23 33 4.6
4.9
4.9
4.9
5.0
3.7
3.2
2.5
2.2
43.5
Thousand Oaks
12 2.6 14 4.5
5.4
5.9
6.7
6.4
5.4
3.9
2.6
2.0
51.0
Ventura
2.2 2.6 3.2 3.8
4.6
4.7
5.5
4.9
4.1
3.4
2.5
2.0
43.5
YOLO
Bryte
0.9 1.7 3.3 5.0
6.4
7.5
7.9
7.0
5.2
3.5
1.6
1.0
51.0
Davis
1.0 1.9 3.3 5.0
6.4
7.6
8.2
7.1
5.4
4.0
1.8
1.0
52.5
Esparto
1.0 1.7 3.4 5.5
6.9
8.1
8.5
7.5
5.8
4.2
2.0
1.2
55.8
Winters
13 1.7 2.9 4.4
5.8
7.1
7.9
6.7
5.3
3.3
1.6
1.0
49.4
Woodland
1.0 1.8 32 4.7
6.1
7.7
8.2
7.2
5.4
3.7
1.7
1.0
51.6
Zamora
L.1 1.9 3.5 5.2
6.4
7.4
7.8
7.0
5.5
4.0
1.9
1.2
52.8
YUBA
Browns Valley
1.0 1.7 3.1 4.7
6.1
7.5
8.5
7.6
5.7
4.1
2,0
1.1
52.9
Brownsville
1.1 1.4 2.6 4.0
5.7
6.8
7.9
6.8
5.3
3.4
1.5
0.9
47.4
* The values in this table
were derived from:
1) California Irrigation Management Information
System
(CIMIS);
2) Reference EvapoTranspiration
Zones Map,
UC Dept. of
Land,
Air & Water
Resources
and California
Dept of Water Resources 1999; and
3) Reference Evapotranspiration
for California,
University
of California,
Department
of Agriculture
and
Natural Resources
(1987) Bulletin 1922, 4)
Determining Daily Reference Evapotranspiration,
Cooperative Extension
UC
Division of Agriculture
and Natural Resources
(1987),
Publication
Leaflet
21426
W
�7
Appendix B — Sample Water Efficient Landscape Worksheet.
WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is filled out by the project applicant and it is a required element of the Landscape Documentation Package.
Please complete all sections (A and B) of the worksheet.
SECTION A. HYDROZONE INFORMATION TABLE
Please complete the hydrozone table(s) for each hydrozone. Use as many tables as necessary to provide the
square footage of landscape area per hydrozone.
Hydrozone' Zone or Irrigation Area %u of
Valve Method'" (S . Ft. Landscape Area
Total 100%
` Hydrozone
"Irrigation Method
HW = High Water Use Plants
MS = Micro -spray
MW = Moderate Water Use Plants
S = Spray
LW = Low Water Use Plants
R = Rotor
B= Bubbler
D= Drip
O = Other
29
40
SECTION B. WATER BUDGET CALCULATIONS
Section 131. Maximum Applied Water Allowance (MAWA)
The project's Maximum Applied Water Allowance shall be calculated using this equation:
MAWA = (ETo) (0.62) [(0.7 x LA) + (0.3 x SLA)]
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration from Appendix A (inches per year)
0.7 = ET Adjustment Factor (ETAF)
LA = Landscaped Area includes Special Landscape Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
SLA = Portion of the landscape area identified as Special Landscape Area (square feet)
0.3 = the additional ET Adjustment Factor for Special Landscape Area (1.0 - 0.7 = 03)
Maximum Applied Water Allowance =
Show calculations.
per year
Effective Precipitation (Eopt)
If considering Effective Precipitation, use 25% of annual precipitation. Use the following equation to calculate
Maximum Applied Water Allowance:
MAWA= (ETo — Eppt) (0.62) [(0.7 x LA) + (0.3 x SLA)]
Maximum Applied Water Allowance = gallons per year
Show calculations.
30
-7/
Section B2. Estimated Total Water Use (ETWU)
The projects Estimated Total Water Use is calculated using the following formula:
ETWU = (ETo)(0.62) P x A+SLA�
where:
ETWU = Estimated total water use per year (gallons per year)
ETo = Reference Evapotranspiration (inches per year)
PF = Plant Factor from WUCOLS (see Definitions)
HA = Hydrozone Area [high, medium, and low water use areas] (square feet)
SLA = Special Landscape Area (square feet)
0.62 = Conversion Factor (to gallons per square foot)
IE = Irrigation Efficiency (minimum 0.71)
Hydrozone Table for Calculating ETWU
Please complete the hydrozone table(s). Use as many tables as necessary.
J i Plant Water
Hydrozone Use Type(
Plant Area (HA)
Factor(PF)j (square feet
I PF x HA
(square feet
j^
SLA
Sum
Estimated Total Water Use =
Show calculations.
31
M
Appendix C — Sample Certificate of Completion.
CERTIFICATE OF COMPLETION
This certificate is filled out by the project applicant upon completion of the landscape project.
PART 1. PROJECT INFORMATION SHEET
Date
Parcel, tract or lot number, if available.
Project Name
Latitude /Longitude (optional)
Name of Project Applicant
Telephone No.
Fax No.
Title
Email Address
Company
Street Address
City
State
Zip Code
Project Address and Location:
Street Address
Parcel, tract or lot number, if available.
City
Latitude /Longitude (optional)
State
Zip Code
Property Owner or his /her designee:
Name
Telephone No.
Fax No.
Title
Email Address
Company
Street Address
City
State
Zip Code
Property Owner
1 /we certify that I /we have received copies of all the documents within the Landscape Documentation Package
and the Certificate of Completion and that it is our responsibility to see that the project is maintained in
accordance with the Landscape and Irrigation Maintenance Schedule."
Property Owner Signature
Date
Please answer the questions below:
1. Date the Landscape Documentation Package was submitted to the local agency
2. Date the Landscape Documentation Package was approved by the local agency
3. Date that a copy of the Water Efficient Landscape Worksheet (including the Water Budget Calculation) was
submitted to the local water purveyor
32
PART 2. CERTIFICATION OF INSTALLATION ACCORDING TO THE LANDSCAPE
DOCUMENTATION PACKAGE
"I /we certify that based upon periodic site observations, the work has been substantially completed in accordance
with the ordinance and that the landscape planting and irrigation installation conform with the criteria and
specifications of the approved Landscape Documentation Package."
Signature*
Date
Name (print)
Telephone No.
Fax No.
Title
Email Address
License No. or Certification No.
Company
Street Address
City
State
Zip Code
*Signer of the landscape design plan, signer of the irrigation plan, or a licensed landscape contractor.
PART 3. IRRIGATION SCHEDULING
Attach parameters for setting the irrigation schedule on controller per ordinance Section 492.10.
PART 4. SCHEDULE OF LANDSCAPE AND IRRIGATION MAINTENANCE
Attach schedule of Landscape and Irrigation Maintenance per ordinance Section 492.11.
PART 5. LANDSCAPE IRRIGATION AUDIT REPORT
Attach Landscape Irrigation Audit Report per ordinance Section 492.12.
PART 6. SOIL MANAGEMENT REPORT
Attach soil analysis report, if not previously submitted with the Landscape Documentation Package per ordinance
Section 492.5.
Attach documentation verifying implementation of recommendations from soil analysis report per ordinance
Section 492.5.
33
o) 4
ORDINANCE NO.
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
,AMENDING [Chapter/Title/Division
I OF THE CODE BY ADDING
SECTIONS REGARDING
THE ADOPTION Of A WATER EFFICIENT LANDSCAPE
ORDINANCE
BE IT ORDAINED, by the City Council of the City of , as follows:
Section 1. That [Chapter Article _ Division _, of the
Code is hereby amended by adding sections J to read as follows:
1. Purpose
(a) The State Legislature has found that:
(1) the waters of the State are of limited supply and are subject to ever
increasing demands;
(2) the continuation of California's economic prosperity is dependent
on the availability of adequate supplies of water for future uses;
(3) it is the policy of the State to promote the conservation and
efficient use of water and to prevent the waste of this valuable
resource;
(4) landscapes are essential to the quality of life in California by
providing areas for active and passive recreation and as an
enhancement to the environment by cleaning air and water,
preventing erosion, offering fire protection, and replacing
ecosystems lost to development;
(5) landscape design, installation, maintenance, and management can
and should be water efficient; and
(6) Article X, Section 2 of the California Constitution specifies that
the right to use water is limited to the amount reasonably required
for the beneficial use to be served, and the right does not and shall
not extend to waste or unreasonable method of use of water.
(b) The City hereby finds that:
(1) Orange County has an established, large reclaimed water
infrastructure system;
�41
(2) Allocation -based and tiered water rate structures allow public
agencies to document water use in landscapes;
(3) Incentive -based water use efficiency programs have been actively
implemented within Orange County since before 1991;
(4) current local design practices in new landscapes typically achieve
the State Model Water Efficient Landscape Ordinance water use
goals;
(5) all water services within the City are metered;
(6) Orange County is a leader in researching and promoting the use of
smart automatic irrigation. controllers with more than 4,500
installations as of June 2009;
(7) all new irrigation controllers sold after 2012 within Orange
County will be smart controllers;
(8) landscape plan submittal and review has been a long standing
practice in ; and
(9) the average rainfall in Orange County is approximately 12 inches
Per year.
/LOCAL AGI.NCY TO CHOOSE ONE OF THE FOLLOWING OPTIONS]
Option 1 — the local water purveyor is implementing budge- based tiered-rate billing
and /or enforcement of water waste prohibitions for all existing metered landscaped areas
throughout its service area, which includes the City of in its entirety.
Or
Option 2 — the City, as the local water purveyor, is implementing enforcement of water
waste prohibitions for all existing metered landscaped areas within its jurisdiction.
Or
Option 3 — Mix and match of Options 1 and 2 as needed by mutual agreement.
Or
Option 4 — Other options specific to the local agency.
(c) Consistent with these findings, the purpose of the City's Water Efficient
Landscape Ordinance is to establish an alternative model acceptable under
2
7-7
AB 1881 as being at least as effective as the State Model Water Efficient
Landscape Ordinance in the context of conditions in the City in order to:
(1) promote the benefits of consistent landscape ordinances with
neighboring local and regional agencies;
(2) promote the values and benefits of landscapes while recognizing
the need to invest water and other resources as efficiently as
possible;
(3) establish a structure for planning, designing, installing, and
maintaining and managing water efficient landscapes in new
construction and rehabilitated projects;
(4) establish provisions for water management practices and water
waste prevention for existing landscapes;
(5) use water efficiently without waste by setting a Maximum Applied
Water Allowance as an upper limit for water use and reduce water
use to the lowest practical amount; and
(6) encourage the use of economic incentives that promote the
efficient use of water, such as implementing a budgt -based tiered -
rate structure.
(Note: Authority cited: Section 65593, Government Code.
Reference: Sections 65591, 65593, 65596, Government Code.]
1.1 Applicability
(a) Beginning January 1, 2010, all planting, irrigation, and landscape - related
improvements required by this Water Efficient Landscape Ordinance shall
apply to the following landscape projects:
(1) new landscape installations or landscape rehabilitation projects by
public agencies or private non- residential developers, except for
cemeteries, with a landscaped area, including pools or other water
features but excluding hardscape, equal to or greater than 2,500
square feet, and which are otherwise subject to a discretionary
approval of a landscape plan, or which otherwise require a
ministerial permit for a landscape or water feature;
(2) new landscape installations or landscape rehabilitation projects by
developers or property managers of single - family and multi - family
residential projects or complexes with a landscaped area, including
pools or other water features but excluding hardscape, equal to or
greater than 2,500 square feet, and which are otherwise subject to a
3
Cl <Y
discretionary approval of a landscape plan, or which otherwise
require a ministerial permit for a landscape or water, feature;
(3) new landscape installation projects by individual homeowners on
single- family or multi - family residential lots with a total project
landscaped area, including pools or other water features but
excluding hardveape, equal to or greater than 5.000 square feet,
and which are otherwise subject to a discretionary approval of a
landscape plan, or which otherwise require a ministerial permit for
a landscape or swater feature;
(LOCAL AGE ICY TO PVCL UDE OR EXCL UDE
THE FOL t.O1VING OPTION BASED ONRELEVANCEJ
1 (4) Sections 2.2, 2.8 and 2.9 of the Guidelines shall apply to new landscape
installations or landscape rehabilitation projects at cemeteries.
2.
(b) Section 3(b) of the Landscape Water Use Standards of this Water
Efficient Landscape Ordinance shall apply to:
(1) all landscaped areas, whether installed prior to or after January 1,
2010; and
(2) all landscaped areas installed after January 1, 2010 to which
Section 1.1(a) is applicable.
(c) This Water Efficient Landscape Ordinance does 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-lond 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.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596; Government Code.]
Implementation Procedures
(a) Prior to installation, a Landscape Documentation Package shall be
submitted to the City for review and approval of all landscape projects
subject to the provisions of this Water Efficient Landscape Ordinance.
4
�q
Any Landscape Documentation Package submitted to the City shall
comply with the provisions of the Guidelines.
(b) The Landscape Documentation Package shall include a certification by a
professional appropriately licensed in the State of California stating that
the landscape design and water use calculations have been prepared by or
under the supervision of the licensed professional and are certified to be in
compliance with the provisions of this Water Efficient Landscape
Ordinance and the Guidelines.
(1) Landscape and irrigation plans shall be submitted to the City for
review and approval with appropriate water use calculations.
[LOCAL AGENCY TO CITOO.SE ONE OF THE FOLLOYI'LNG OPTIONS)
Option 1— Water use calculations shall be consistent with calculations contained in the
Guidelines and shall be provided to the local water purveyor, as appropriate, under
procedures determined by the City.
Or
Option 2 — Water use calculations shall be consistent with calculations contained in the
Guidelines and shall be provided to the local water purveyor under procedures
determined by the City.
(2) Verification of compliance of the landscape installation with the
approved plans shall be obtained through a Cert�fication of
Completion in conjunction with a Certificate of Use and
Occupancy or Permit Final process, as provided in the Guidelines.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.
3. Landscape Water Use Standards
(a) For applicable landscape installation or rehabilitation projects subject to
Section 1.1(a) of this Water Efficient Landscape Ordinance, the Estimated
Applied Water Use allowed for the landscaped area shall not exceed the
NLAWA calculated using an ET adjustment factor of 0.7, except for special
landscaped areas where the MAIVA is calculated using an ET adjustment
_factor of 1.0; or the design of the landscaped area shall otherwise be
shown to be equivalently water- efficient in a manner acceptable to the
City; as provided in the Guidelines.
(b) Irrigation of all landscaped areas shall be conducted in a manner
conforming to the rules and requirements, and shall be subject to penalties
tev
and incentives for water conservation and water waste prevention as
determined and implemented by the local water purveyor or as mutually
agreed by local water purveyor and the local agency.
4. Delegation.
The City may delegate to, or into a contract with, a local agency to implement,
administer, and /or enforce any of the provisions of the Water Efficient Landscape
Ordinance on behalf' of the City.
5. Definitions.
The following definitions are applicable to this [chapter /division/title)
"Applied water" means the portion of water supplied by the irrigation system to the
landscape.
"Budget -based tiered -rate structure" means tiered or block rates for irrigation accounts
charged by the retail water agency in which the block definition for each customer is
derived from lot size or irrigated area and the evapotranspiration requirements of
landscaping.
"Ecological restoration project" means a project where the site is intentionally altered to
establish a defined, indigenous, historic ecosystem.
"Estimated Applied Water Use" means the average annual total amount of water
estimated to be necessary to keep plants in a healthy state, calculated as provided in the
Guidelines. It is based on the reference evapotranspiration rate, the size of the landscape
area, plant water use factors, and the relative irrigation efficiency of the irrigation
system.
"ET adjustment,lactor" or "ETAF' is equal to the plant factor divided by the irrigation
efficiency factor for a landscape project, as described in the Guidelines. The ETAF is
calculated in the context of local reference evapotranspiration, using site - specific plant
factors and irrigation efficiency factors that influence the amount of water that needs to
be applied to the specific landscaped area.
A combined plant mix with a site -wide average plantfactor of 0.5 (indicating a
moderate water need) and average irrigation efficiency of 0.71 produces an ET
adfustment factor of (0.7) _ (0.5/0.71), which is the standard of water use efficiency
generally required by this Water Efficient Landscape Ordinance and the Guidelines,
except that the ETA for a special landscape area shall not exceed 1.0.
"Guidelines" refers to the Guidelines for Implementation of the Water Efficient
Landscape Ordinance, as adopted by the City, which describes procedures, calculations,
and requirements for landscape projects subject to this Water Efficient Landscape
Ordinance.
0
!cl
"Kardscapes" means any durable material or feature (pervious and non pervious)
installed in or around a landscaped area, such as pavements or walls. Pools and other
water features are considered part of the landscaped area and not considered Kardscapes
for purposes of this Water Efficient Landscape Ordinance.
"Homeowner installed landscape" means any landscaping either installed by a private
individual for a single family residence or installed by a licensed contractor hired by a
homeowner. A homeowner, for purposes of this ordinance, is a person who occupies the
dwelling lie or she owns. This definition excludes speculative homes, which are not
owner- occupied dwellings and which are subject under this ordinance to the requirements
applicable to developer - installed residential landscape projects.
"Irrigation efficiency" means the measurement of the amount of water beneficially used
divided by the amount of water applied. Irrigation efficiency is derived from
measurements and estimates of irrigation system characteristics and management
practices. The minimum average irrigation efficiency for purposes of this Water Efficient
Landscape Ordinance is 0.71. Greater irrigation efficiency can be expected from well
designed and maintained systems.
"Landscaped area" means all the planting areas, turf areas, and water features in a
landscape design plan subject to the Maximum Applied Water Allowance and Estimated
Applied Water Use calculations. The landscaped 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).
"Landscape contractor" means a person licensed by the State of California to construct,
maintain, repair, install, or subcontract the development of landscape systems.
"Landscape Documentation Package" means the documents required to be provided to
the City for review and approval of landscape design projects, as described in the
Guidelines.
"Landscape project" means total area of landscape in a project, as provided in the
definition of `landscaped area," meeting the requirements under Section 1.1 of this
Water Efficient Landscape Ordinance.
"Local agency" means a city or county, including a charter city or charter county, that is
authorized by the City to implement, administer, and /or enforce any of the provisions of
the Water Efficient Landscape Ordinance on behalf of the City. The local agency may be
responsible for the enforcement or delegation of enforcement of this Water Efficient
Landscape Ordinance including, but not limited to, design review, plan check, issuance of
permits, and inspection of a landscape project.
"Local water purveyor" means any entity, including a public agency, city, county, or
private water company that provides retail water service.
7
l01,i_
"Maximum Applied Water Allowance" or "MAWA" means the upper limit of annual
applied water for the established landscaped area as specified in Section 2.2 of the
Guidelines. It is based upon the area's reference evapotranspiration, the ET Adjustment
Factor, and the size of the landscaped area. The Estimated Applied Water Use shall not
exceed the Maximum Applied Water Allowance.
"Mined -land reclamation projects" means any surface mining operation with a
reclamation plan approved in accordance with the Surface Mining and Reclamation Act
of 1975.
"New construction" means, for the purposes of this Water Efficient Landscape
Ordinance, a new building with a landscape or other new landscape such as a park,
playground, or greenbelt without an associated building.
"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.
"Pervious" means any surface or material that allows the passage of water through the
material and into the underlying soil.
"Permit" means an authorizing document issued by local agencies for new construction
or rehabilitated landscape.
"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 jbctor 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 this Water Efficient Landscape
Ordinance are derived from the Department of Water Resources 2000 publication "Water
Use Classification of Landscape Species."
"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.
"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 A of the 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.
"Rehabilitated landscape" means any re- landscaping project that meets the applicability
criteria of Section 1.1(a), where the modified landscape area is greater than 2,500 square
feet, is 50% of the total landscape area, and the modifications are planned to occur within
one year.
8
ley
".Smart automatic irrigation controller" means an automatic timing device used to
remotely control valves that operate an irrigation system and which schedules irrigation
events using either evapotranspiration (weather- based) or soil moisture data.
"Special landscape area" 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 parks, sports
fields, golf courses, and where turf provides a playing surface.
"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 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 landscaped
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
treatment or storm water retention are not water features and, therefore, are not subject to
the water budget calculation.
[Note: Authority Cited: Section 65595, Government Code. Reference: Sections 65592,
65596, Government Code.]
6. Exemption from California Environmental Quality Act.
"The City Council hereby determines that this Ordinance is exempt from review under the
California Environmental Quality Act ( "CEQA ") (California Public Resources Code
Section 21000 et sue), because pursuant to State CEQA Regulation 15307 (14 Cal. Code
Regs., y 15307), this Ordinance is covered by the CEQA Categorical Exemption for
actions taken to assure the maintenance, restoration, enhancement, or protection of a
natural resource where the regulatory process involves procedures for protection of the
environment. The adoption of this Ordinance will result in the enhancement and
protection of water resources in the City, and will not result in cumulative adverse
environment impacts. It is therefore exempt from the provisions of CEQA. The City
Council hereby directs the City Manager or designee to prepare and file a Notice of
Exemption as soon as possible following adoption of this Ordinance.
7. Severability.
The provisions of this Ordinance are severable, and the invalidity of any section,
paragraph, phrase, clause, or part of this Ordinance shall not affect the validity or
effectiveness of the remainder of this Ordinance.
9
tom=/
8. Effective Date
This Ordinance shall become effective thirty (30) days after its adoption in accordance
with the provisions of California law.
9. City Clerk Certification
The City Clerk shall certify to the passage of this Ordinance and cause the same or a
summary thereof to be published within fifteen (15) days after adoption in a newspaper of
general circulation, printed and published in , California.
PASSED, APPROVED, AND ADOPTED, this _ day of 200.
ATTEST:
City Clerk
10
/L�:�-
'.her
rtions
ecific to
hvU7
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) ss.
CITY OF )
1, City Clerk of the City of do hereby
certify that foregoing Ordinance No. was duly and regularly adopted by the
City Council of the City of at a regular meeting thereof on the day
of , 200_ and that the same was passed and adopted by the following vote, to
wit:
AYES:
NOES:
ABSENT:
ABSTAIN:
City Clerk
I CC:
GUIDELINES
FOR IMPLEMENTATION OF THE
CITY OF
WATER EFFICIENT LANDSCAPE
ORDINANCE
/O?
TABLE OF CONTENTS
Section
Page No.
1. Purpose and Applicability ....................................................... ...............................
I
1.1 Purpose ......................................................................... ..............................1
1.2 Applicability ............................................................... ...............................
2
2. Submittal Requirements for New Landscape Installations or Landscape
Rehabilitation Projects ............................................................ ...............................
3
2.1 Elements of the Landscape Documentation Package . ...............................
3
2.2 Water Efficient Landscape Calculations and Alternatives ........................
4
23 Soil Management Report ............................................. ..............................6
2.4 Landscape Design Plan... ............................................. .............................
7
2.5 Irrigation Design Plan ............................................... ...............................
10
2.6 Grading Design Plan ................................................. ...............................
14
2.7 Certification of Completion.. . ..................................................
15
2,8 Post - Installation Irrigation Scheduling ..................... ...............................
16
2.9 Post - Installation Landscape and Irrigation Maintenance .........................
16
3. Provisions for Existing Landscapes ...................................... ...............................
16
Appendix A — Example Certification of Design... ................. ....................................... A -1
Appendix B — Water Efficient Landscape Worksheet .................... ............................... B -1
Appendix C — Reference Evapotranspiration (ETo) Table ............. ............................... C -1
Appendix D — Example Installation Certificate of Completion ...... ............................... D -1
Appendix E - Definitions ...... ..................... ............................................. E -1
C
e 6 7
1. Purpose and Applicability
1.1 Purpose
(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 implemented 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:
[LOCAL AGENCY A1.4Y ADD OR DELETE FROM THIS LLS7; OR MAYADD THE
SPECIF7C CODE:SECT /ON NUTAIBERS, OR RELEVANT LAWS A!VD
REG VIA TIO,'VSj
(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
1.2 Applicability
1
I L.7
(a) The Water Efficient Landscape Ordinance and these Guidelines apply to all of the
following landscape projects:
(1) New landscape installations or landscape rehabilitation projects by public
agencies or private non - residential developers with a landscaped area,
including pools or other water features but excluding hardscape, equal to
or greater than 2,500 square feet, and which are otherwise subject to a
discretionary approval of a landscape plan or which otherwise require a
ministerial permit for a landscape or water feature.
(2) New landscape installations or landscape rehabilitation projects by
developers or property managers of single - family and multi - family
residential projects or complexes with a landscaped area, including pools
or other water features but excluding hardscape, equal to or greater than
2,500 square feet, and which are otherwise subject to a discretionary
approval of a landscape plan or which otherwise require a ministerial
permit for a landscape or water feature
(3) New landscape installation projects by individual homeowners on single -
family or multi - family residential lots with a project landscaped area,
including pools or other water features but excluding hardscape, equal to
or greater than 5,000 square feet, and which are otherwise subject to a
discretionary approval of a landscape plan or which otherwise require a
ministerial permit for a landscape or water feature.
(b) A landscape rehabilitation project is subject to the requirements of the Ordinance
and these Guidelines where (i) the modified landscaped area is greater than 2,500
square feet and represents at least 50% of the total landscaped area; and (ii) the
modifications are planned to occur within one year. 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 Planning Commission, City Council, or other jurisdictional authority. A
typical standard condition of approval reads:
"Landscaping jbr the project shall be designed to comply with the City's
Water Wicient 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.
2.1 Elements of the Landscape Documentation Package
(a) A Landscape Documentation Package is required to be submitted by the prq/ect
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 landscaped area (square feet) and rehabilitated landscaped
area (if applicable);
(e) project type (e.g., new, rehabilitated, public, private, cemetery,
homeowner- installed);
(t) 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;
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(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) a 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 City's 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 (EA W0 expressed as annual totals including, but not limited
to, the following:
(a) 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.
(3) 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 landscape
project is limited to replacement planting and/or irrigation to rehabilitate
an existing landscaped area.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.]
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2.2 Water 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
landscaped area as part of the Landscape Documentation Package submittal to
the City. The !LIAYGA and EAWU shall be calculated based on completing the
Water Efficient Landscape Worksheets (in accordance with the sample worksheets
in Appendix B).
(b) The EAWU allowable for the landscaped area shall not exceed the IM WA. The
.MAWA shall be calculated using an evapotranspiration adjustment factor (ETAF)
of 0.7 except for the portion of the MAWA applicable to any special landscaped
areas within the landscape project, which shall be calculated using an ETAF of
1.0. Where the design of the landscaped 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 AWN, at the
discretion of and for the review and approval of the local agency.
(e) Water budget calculations shall adhere to the following requirements:
(1) The MA WA shall be calculated using the Water Efficient Landscape
Worksheets and equation presented in Appendix B on page B -1. The
example calculation on page B -1 is a hypothetical example to demonstrate
proper use of the equation.
(2) The EAWU shall be calculated using the Water Efficient Landscape
Worksheets and equation presented in Appendix B on page B -2. The
example calculation on page B -2 is a hypothetical example.
(3) For the calculation of the MA WA and EAWU, a project applicant shall use
the ETo values from the closest location listed the Reference
Evapotranspiration Table in Appendix C. For geographic areas not
covered in Appendix C, data from other cities located nearby in the same
reference evapotranspiration zone may be used, as found in the CIMIS
Reference Evapotranspiration Zones Map, Department of Water
Resources, 1999.
(4) For calculation of the EAWU, the plant water use factor shall be
determined as appropriate to the project location from the Water Use
E,ficiency of Landscape Species (WUCOLS) Species Evaluation List. The
plant factor is 0.1 for very low water use plants, 0.2 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.
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(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 aplani 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 landscaped areas
shall be set at 1.0. For calculation of the EAWU, the ETAF for special
landscaped areas shall be calculated as the special landscaped area (SLA)
plant, factor divided by the SLA irrigation efficiency factor.
(9) Irrigation efficiency shall be calculated using the worksheet and equation
presented in Appendix B on page B -2.
(d) The Maximum Applied Water Allowance shall adhere to the following
requirements:
(1) The Maximum Applied IVater Allowance shall be calculated using
the equation presented in Appendix B. The example calculation in
Appendix B is hypothetical to demonstrate proper use of the
equation and does not represent an existing and /or planned
landscape project. The reference evapotranspiration (ETo) values
used in this calculation are from the Reference Evapotranspiration
"table in Appendix C 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.
2.3 Soil Management Report
(a) 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.
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(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:
5. sodium;
6. percent organic matter; and
7. recommendations.
(2) 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 Certif cation 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.
Note: Authority Cited: Section 65595, Government
Code. Reference: Section 65596, Government Code.]
2.4 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, At the landscape design plan meeting, the
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following design criteria shall be submitted as part of the Landscape
Documentation Package.
(1) Plant Material
(a) Any plant may be selected for the landscaped area provided the
EAWU in the landscaped area does not exceed the MAWA. To
encourage the efficient use of water, the following is highly
recommended:
1. protection and preservation of non - invasive water - conserving
plant species and water - conserving turf,
2. selection of water- conserving plant species and water -
conserving turf,
3, selection of plants based on disease and pest resistance;
4. selection of trees based on applicable City and local tree
ordinances or tree shading guidelines; and
5. selection of plants from local and regional landscape program
plant lists.
(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
2.5(a)(2)(1)) 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. To
encourage the efficient use of water, the following is highly recommended for
inclusion in the landscape design plan:
(1) use the Sunset Western Climate Zone System 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); 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).
8
(e) 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. When conflicts between water conservation and fire safety design
elements exist, the fire safety requirements shall have priority.
[f,OCAL .4 GE V`CY NI4T CFIaOSE TO INSERT FIRE CODE REFERENCE HERE)]
(f) The use of invasive plant species and /or noxious plant species is strongly
discouraged.
(g) 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 ecient plant species as a group.
(1) Water Features
(a) Recirculating water systems shall be used for water features
(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) Mulch and Amendments
(a) A minimum two inch (2 ") 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.
(b) Stabilizing mulching products shall be used on slopes.
(c) The mulching portion of the seed /mulch slurry in hydro - seeded
applications shall meet the mulching requirement.
(d) Soil amendments shall be incorporated according to
recommendations of the soil report and what is appropriate for the
plants selected (see Section 2.3 of these Guidelines).
(h) The landscape design plan, at a minimum, shall:
(1) delineate and label each hydrozone by number, letter, or other method;
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(2) identify each hydrozone as low, moderate, high water, or mixed water use.
Temporarily irrigated areas of the landscaped 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 of any applicable storm water best
management practices that encourage on -site retention and infiltration of
storm water. Storm water best management practices are encouraged in
the landscape design plan and examples include, but are not limited to:
(a) infiltration beds, swales, and basins that allow water to collect and
soak into the ground;
(b) constructed wetlands and retention ponds that retain water, handle
excess flow, and filter pollutants; and
(c) pervious or porous surfaces (e.g., permeable pavers or blocks,
pervious or porous concrete, etc.) that minimize runoff.
(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.
[Note: Authority Cited: Section 65595, Reference: Section
65596, Government Code and Section 1351, Civil Code.]
2.5 Irrigation Design Plan
(a) 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
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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) Dedicated landscape water meters are highly recommended on
landscaped areas smaller than 5,000 square feet to facilitate water
management.
(b) Automatic irrigation controllers utilizing either evapotranspiration
or soil moisture sensor data shall be required for irrigation
scheduling in all irrigation systems.
(e) The irrigation system shall be designed 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.
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.
(d) 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 wind or freezing weather or during rain.
(e) Manual shut -off valves (such as a gate valve, ball valve, or
butterfly valve) shall be required as close as possible to 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.
(1) Backfloin 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.
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(g) High flow sensors that detect and report high flow conditions
created by system damage or malfunction are recommended.
(h) 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.
(i) Relevant information from the soil management plan, such as soil
type and infiltration rate, shall be utilized when designing
irrigation systems.
(j) The design of the irrigation system shall conform to the
hydrozones of the landscape design plan.
(k) Average irrigation efficiency for the project shall be determined in
accordance with the EAWU calculation sheet in Appendix B.
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 be assumed to be:
Pop -up stream rotator heads = 75%
Stream rotor heads = 75%
Microspray = 75%
Bubbler = 80%
Drip emitter = 85%
Subsurface irrigation = 90%
(1) 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.
(m) In mulched planting areas, the use of low volume irrigation is
required to maximize water infiltration into the root zone.
(n) Sprinkler heads and other emission devices shall have matched
precipitation rates, unless otherwise directed by the
manufacturer's recommendations.
(u) Head to head coverage is recommended. However, sprinkler
spacing shall be designed to achieve the highest possible
distribution uniformity using the manufacturer's recommendations.
(p) Swing joints or other riser - protection components are required on
all risers subject to damage that are adjacent to high traffic areas.
12
(q) Check valves or anti -drain valves are required for all irrigation
systems.
(r) Narrow or irregularly shaped areas, including turf, less than eight
(8) feet in width in any direction shall be irrigated with subsurface
irrigation or a low volume irrigation system.
(s) 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 implanted, The surfacing of the setback may be mulch, gravel,
or other porous material. These restrictions may be modified if:
1. the landscaped 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 2.5
(a)(1)(H) 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 precipitation 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.
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(d) Individual hydrozones that mix plants of moderate and low water
use or moderate and high water use may be allowed if:
1. the plans 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.
(e) Individual hydrozones that mix high and low water use plants shall
not be permitted.
(t) 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.
(g) 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.
(Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.]
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2.6 Grading Design Plan
(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 landscaped 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 landscaped
area.
(b) The project applicant shall submit a landscape grading plan that indicates finished
configurations and elevations of the landscaped area including:
(1) height of graded slopes;
(2) drainage patterns;
(3) pad elevations;
(4) finish grade; and
(5) storm water retention improvements, if applicable.
(e) 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
tines 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 landscaped areas.
(d) The Grading Design Plan shall contain the following statement: "1 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 bylaw.
[Note: Authority Cited: Section 65595, Government Code. Reference:
Section 65596, Government Code.]
2.7 Certification of Completion
(a) Landscape project installation shall not proceed until the Landscape
Documentation Package has been approved by the City and any ministeriat
permits required are issued.
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(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 D 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."
(2) Documentation of the irrigation scheduling parameters used to set the
controller(s);
(3) An irrigation audit report from a certified 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.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.]
2.8 Post - 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:
(1) 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.
[Note: Authority Cited: Section 65595, Government Code.
Reference: Section 65596, Government Code.]
2.9 Post - Installation Landscape and Irrigation Maintenance
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(a) Landscapes shall be maintained to ensure water use efficiency in accordance with
existing local agency code.
[LOCAL AGENCY MAY REFERENCE CODE HERE]
3. Provisions for Existing Landscapes
(a) Irrigation of all landscaped 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 .MAIN
calculated with an ETAF of 0.8 to all landscaped 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.
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CERTIFICATION OF LANDSCAPE DESIGN
I hereby certify that:
Appendix A
(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
property comply with the requirements of the City of
Efficient Landscape Ordinance (Municipal Code Sections
the City of Guidelines for Implementation of the City of
Water Efficient Landscape Ordinance.
identified
Water
and
(4) The information 1 have provided in this Certificate of Landscape Design is true and
correct and is hereby submitted in compliance with the City of
Guidelines for Implementation of the City of Water Efficient Landscape
Ordinance.
Print Name
Signature
Address
Telephone
Landscape Design Professional's Stamp
A -1
Date
License Number
E -mail Address
26
Appendix B
EXAMPLE WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is f iIled out be the ormen apnlecam for each Point of Connection. Please comoletc all sections of the oorkshcet
Point of Connection # 1 J
Maximum Applied Water Allowance LNA WA
Total AIAWA = ETo x 0.7 x LA in S . Ft. x 0.62) + (ETo x 1.0 x SLA in S . Ft. x 0.62) = Gallons per
year for LA +SLA
where:
A9A01A = Mari n im Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches per year)
0.7 = Evapotranspiration A41usonent Factor (ETAF)
1.0 = ETAF for .Special Landscaped Area
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
SLA =Special Landscaped Area (square feet)
Example Calculation: a hypothetical landscape project in Santa Ana, CA with an irrigated landscaped area of 40,000 square feet with 10,000 square feet
of Special Landscaped Area. To calculate AV IVA, the annual reference evapotranspiration value for Santa
Ana is 48.2 inches as listed in the Reference
Evapotranspiration Table in Appendix D.
ETo
ETAF
LA or SLA (ft
Conversion
AM WA (Gallons Per Year)
MA WA for LA
148.2
x
0.7
x
40,000
x
0.62
=
836,752
MAlVA for SLA =
148.2
1 x
1 1.0
x
10,000
x
0.62
=
298,840
Total AIM iV.A=
50,000
1,135,592 Gallons per year for LA +SLA
U
K
Estimated Applied Water Use
EAWU = ETo x Ki. x LA x 0.62 - IE = Gallons
per year
where:
K,._ = Ks x Kd x K,,,,
EA14rU= Estimated Applied Water Use (gallons per year)
K, = species factor (range
= 0.1 -0.9) (see
WUCOLS list for values)
ETo = Reference Evapotranspiration Appendix D (inches per year)
Kd = density factor (range
= 0.5 -1.3) (see WUC'OLS for density value ranges)
K't, = Landscape Coefficient
K,,,, = microclimate factor (range = 0.5 -1.4)
(see id /UCOLS)
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
IE = Irrigation 4f iciencv = IME x DU (See definilion in
Appendix E
WUCOLS - 7vtvw.Owtti:.wafet'.Ca.
OV
/d6CS /wl6C.nlSOO.pt�
for example IE percentages)
IME = Irrigation Management Efficiency (90 %)
DU = Distribution Uniformity of irrigation head
Example Calculation:
ETo
KL
LA
Conversion
IE
EAWU (Gallons per ear
Special Landscaped Area
48.2
x
1.00
x
10,000
x
0.62
-
0.75
=
398,453
Cool Season Turf
48.2
x
1.00
x
0
x
0.62
-
0.71
=
0
Warm Season Turf
48.2
x
0.65
x
0
x
0.62
-
0.71
=
0
High Water Using Shrub
48.2
x
0.70
x
0
x
0.62
-
0.71
=
0
Medium Water Using Shrub
48.2
x
0.50
x
15,000
x
0.62
-
0.65
=
344,815
Low Water Using Shrub
48.2
x
0.30
x
25.000
x
0.62
-
0.75
=
298,840
Very Low Water Using Shrub
48.2
x
0.20
x
0
x
0.62
-
0.71
=
0
Other
48.2
x
0.50
x
0
x
0.62
-
0.71
=
0
Other
48.2
x
1 0.50
x
0
x
0.62
-
0.71
=
0
Total EAWU=
.
50,000
1,042,109 Gallons per year
Compare EAWU with -44A WA.
The EAWU(1,042,109 gallons per Vear) is less than AM WA (1,135,592 gallons per year). For this example, the water budget complies with the MAWA.
C -2
I r✓
List sprinkler heucls, microspray, and drip emitters here along with average precipitation rate and Distribution Uniformity of Irrigation Head.
S rinkler Head Types
Average Preci itation Rate
Distribution Uni orrnit , of Irrigation Head
Drip_
Microspray
Bubbler
Low precipitation rotating nozzles
Stream rotors
C -3
I�
WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is filled out by the project applicant for each Point orConnection. Please complete all sections of the worksheet.
Point of Connection #
Maximum Applied Water Allowance MAWA
Total MAWA = (ETo x 0.7 x LA in Sq. Ft. x 0.62) + (ETo x 1.0 x SLA in Sq. Ft. x 0.62= Gallons per year for LA +SLA
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches per year)
0.7 = Evapotranspiration Adjustment Factor (ETAF)
1.0 = ETAF for Special Landscaped Area
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
SLA = Special Landscaped Area (square feet)
MAWA Calculation:
ETo
ETAF
LA or SLA ft
Conversion
MAWA Gallons Per Year
MAWA for LA =
x
0.7
x
x
0.62
=
MAWA for SLA =
x
1.0
x
Total MAWA =
C -4
IW
Estimated Applied Water Use
EAWU = ETo x KL x LA x 0.62- IE = Gallons per year
where:
EAWU = Estimated Applied Water Use (gallons per year)
ETo = Reference Evapotranspiration Appendix D (inches per year)
KL = Landscape Coefficient
LA = Landscaped Area (square feet)
0.62 = Conversion factor (to gallons per square foot)
lE = Irrigation Efficiency = IME x DU
IME = Irrigation Management Efficiency (90 %)
DU = Distribution Uniformity of irrigation head
EAWU Calculation:
KL = KsxKdxK.,
Ks = species factor (range = 0.1 -0.9) (see WUCOLS list for values)
Kd = density factor (range = 0.5 -1.3) (see WUCOLS for density value
ranges)
K,n = microclimate factor (range = 0.5 -1.4) (see WUCOLS)
WUCOLS - www. owue. water. ca. go v /docsfwucols00. pdf
x
ETo
KL
LA
Conversion
IE
EAWU Gallons Per Year
Special Landscaped Area
x
x
x
0.62
Cool Season Turf
x
x
x
0.62
Warm Season Turf
x
x
x
0.62
High Water Using Shrub
x
x
x
0.62
Medium Water Using Shrub
x
x
x
0.62
Low Water Using Shrub
x
x
x
0.62
Very Low Water Using Shrubs
x
x
x
1 0.62
x
x
x
0.62
x
x
x
0.62
x
x
x
0.62
x
x
x
0.62
x
C -5
List sprinkler heads, microspray, and drip emitters here along with average precipitation rate and Distribution Uniformity of trrigation
Head.
S rinkler Head Types
Average Precipitation Rate
Distribution Uniform& of Irrigation Head
Drip
Micros pray
Bubbler
Low precipitation rotating nozzles
Stream rotors
w
I�
Appendix D
Reference Evapotranspiration (ETo) Table
Appendix C -
Reference Evapotranspiration (ETo) Table'
County
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
and
ETo
Cit
Orange
Irvine
2.2
2.5
3.7
4.7
5.2
5.9
6.3
6.2
4.6
3.7
2.6
2.3
49.6
Laguna
2.2
2.7
3.4
3.8
4.6
4.6
4.9
4.9
4.4
3.4
2.4
2.0
43.2
Beach
Santa
2.2
2.7
3.7
4.5
4.6
5.4
6.2
6.1
4.7
3.7
tlt2
.0
48.2
Ana
1
1
1
1
The values in this table were derived from:1) California Irrigation Management
Information System CIMIS 2 Reference
EvapoTranspiration Zones Map, UC Dept. of Land, Air &Water Resources and California
Dept of Water Resources 1999,
3) Reference Evapotranspiration for California, University of California, Department of
Agriculture and Natural Resources
(1987) Bulletin 1922 4) Determining Daily Reference Evapotranspiration, Cooperative
Extension UC Division of
Agriculture and Natural Resources (1987), Publication Leaflet 21426
Appendix E
LANDSCAPE INSTALLATION CERTIFICATE OF COMPLETION
I hereby certify that:
(1) 1 am a professional appropriately licensed in the State of California to provide
professional landscape design services.
(2) The landscape project for the property located at
(provide
address or parcel number(s)) was installed by me or under my supervision.
street
(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 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
Guidelines for Implementation of the City of
Water Efficient Landscape Ordinance.
Print Name
Signature
Address
Date
License Number
Telephone E -mail Address
Landscape Design Professional's Stamp
(if Appropriate)
3.?
Appendix E
Definitions
The terms used in these Guidelines have the meaning set forth below:
"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.
"Conversion fiactor" means the number that converts acre - inches per acre per year to gallons
per square foot per year.
"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
"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
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 "LAWU' means the annual total amount of water estimated to
keep plants in a healthy state. It is based on factors such as reference evapotranspiration rate, the
size of the landscaped area, plant water use factors, and the irrigation efficiency within each
hydrozone.
"Evapotranspiration ad/ustment factor" or "ETAF°' means
"Evapotranspiration rstd' means the quantity of water evaporated from adjacent soil and
other surfaces and transpired by plants during a specified time.
i3�
"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.
"Haras•capes" means any durable material or feature (pervious and non pervious) installed in or
around a landscaped area, such as pavements or walls. Pools and other water features are
considered part of the landscaped area and not considered hardscapes for purposes of these
Guidelines.
"Hydrozone" means a portion of the landscaped area having plants with similar water needs and
typically irrigated by one value /controller station. A hydrozone may be irrigated or non -
irrigated.
"Infillration 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.
"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 rungff 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
Witt adjust irrigation run times to meet plant water needs.
"Irrigation efficiency" or "16" means the measurement of the amount of water beneficially
used divided by the amount of water applied to a landscaped 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 [ME of
90 %:
a. Pop -up stream rotator heads = 75%
b. Stream rotor heads = 75%
C. Microspray = 75%
d. Bubbler = 80%
e. Drip emitter = 85%
f Subsurface irrigation = 90%
"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 loss from irrigated
landscaped areas and special landscaped 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.
"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, 56413, 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.
"Landscaped area" means all the planting areas, turf areas, and water features in a landscape
design plan subject to the Maximum Applied Water Allowance and Estimated Applied Water Use
calculations. The landscaped area does not include footprints of buildings or structures,
sidewalks, driveways, parking lots, decks, patios, gravel or stone walks, other pervious or non -
pervious hardseapes, 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.
"Lorr volume jrz•igatjon" 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.
"Main line" means the pressurized pipeline that delivers water from the water source to the valve
or outlet.
"Maximum Applied Water Allowance" or "MAIhA" means the upper limit of annual applied
water for the established landscaped 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 landscaped
area. The Estimated Applied Water Use shall not exceed the Maximum Applied Water
Allowance.
"Nicroclimate" means the climate of a small, specific area that may contrast
with the climate of the overall landscaped area due to factors such as wind,
sun exposure, plant density, of proximity to reflective surfaces.
"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.
"Plani factor" or "plant water use factor" is a factor, when multiplied by Elb, that estimates the
amount of water needed by plants. For purposes of this Water Efficient Landscape Ordinance,
the plans 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 plantfactor range for high water use plants is 0.7 to 1.0.
Plant fiictors 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.
iyl
"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.
"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 landscaped 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 Landscaped 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 parks, sports fields, golf
courses, and where tur f 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 flexible, 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. , adopted by the City
Council on , 2009, and codified in the Municipal Code in
( chapter /title /division /sections I
"Water rffrcienr 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.
"Grater 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
r L/D,
swimming pools (where water is artificially supplied). The surface area of water features is
included in the high water use hydrozone of the landscaped 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 treatment or storm water retention are not water
features and, therefore, are not subject to the water budget calculation.
"1Natering window" means the time of day irrigation is allowed
"WUCOLY' 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. wc, v., rota. r air r.ca.govldnes ro rcolsOJ
Title 14.17: Water Efficient
landscape Ordinance
City Council Study Session
January 12., 2,010
Summary
State Assembly Bill 1881 -2006
II. Options for Compliance
III. Orange County Model
IV. Proposed Newport Beach Ordinance
I. State Assembly Bill 1881 - 2006
Purpose:
To reduce water consumption by requiring water efficient
landscape design for larger new and rehabilitation landscape
installation projects.
Requirements:
• Local agencies must adopt the State Model Ordinance or a local
ordinance "at least effective as" the State Model Ordinance by
January 1, 2010.
• Local agencies must report status of adoption of ordinance to
DWR by January 30, 2010.
• DWR is required to report back to the Legislature by 2011 on
status of City adoption of local or State Model ordinance.
implementation Provisions:
*Applicability - new landscape installation projects and landscape
rehabilitation projects located in all areas requiring a ministerial
permit or discretionary review
• Project Thresholds -
> 2,500sf of landscaped area: Developer - installed projects, public
agency projects, and private development projects (residential,
commercial, HOA, etc.)
> 5,000 sf of landscaped area: homeowner - provided or hired
projects
• System Design - MAWA calculated using 0.7 ET Adjustment Factor
(Special Landscape areas - 1.0, Existing Landscapes - 0.8)
Exemptions - (All projects must comply with Chapter 14.16 of
Municipal Code — Water Conservation Regulations)
• Landscape rehabilitation projects where replacement plantings have
equal or lower water needs and the irrigation system is designed,
operable and programmed to comply with City's water conservation
regulations.
• Registered historical sites
• Public botanical gardens and arboretums
• Ecological restoration projects
• Landscaping in Hazard Reduction and Fuel Modification Zones
• Cemeteries are not required to submit a complete Landscape Design
Package; but must comply with the following Sections: Water Efficient
Landscape Calculations (2.2), and Post - Installation Irrigation
Scheduling /Maintenance (2.8 and 2.9).
• Definitions -
Landscaped area — all irrigated planting areas, turf areas, and
surface area of water features (including pools, ponds, fountains).
Does not include footprints of buildings or structures, pervious or
non - pervious hardscapes (including driveways, sidewalks, parking
lots, decks, patios), and other non - irrigated areas.
Landscape rehabilitation project - meets applicability threshold, is
50% of the total landscaped area on the property, and the
modifications are planned to occur within one year.
Calculating landscaped Area °
W
W
ry
(n
F-I Landscape
F-I Hardscape
(Non- Irrigated
Vegetation)
II.
Options for Compliance
Option 1: Do not adopt an ordinance by January 1, 2010.
State Model Water Efficient Landscape Ordinance
takes effect in jurisdiction.
Option 2: Adopt own Ordinance and findings that Ordinance is
"at least as effective as" the State's Model Ordinance.
Option 3: Adopt the Orange County Model Water Efficient Landscape
and findings to meet the "at least as effective as"
requirement.
Orange County Model
Developed in collaboration with the Orange County League of Cities,
Metropolitan Water District of Orange County, city and county planners,
Water Agency Directors and staff, Building Industry Association, city
attorneys, Orange County Fire Authority and city fire departments, parks
and recreation staff, and the general public.
-Meets requirements of AB 1881.
® Provides consistency across the County for professionals trying to comply
with the requirements, and will allow training opportunities for updates
on a countywide basis.
*Two documents: the WHAT component — a succinct ordinance that
establishes the MAWA (Maximum applied Water Allowance), and the
HOW component — a separate technical guidelines document that
explains how to achieve the standards established in the Model
Ordinance and allows for flexibility to incorporate future technical
innovations in irrigation without having to change the Ordinance.
IV. Proposed Newport Beach Ordinance
The Newport Beach Water Efficient Landscape Ordinance is based
on the framework of the Orange County Model Ordinance.
Review Process: administered by the Planning Department
Submittal Requirements:
Landscape Documentation Package - submitted prior to permit issuance
1) Project Information Summary
2) Water Efficient Landscape Worksheet(s)
3) Soil Management Plan
4) Landscape Design Plan
5) Irrigation Design Plan
6) Certification of Design form
(elements 3, 4, and 5 may be combined into one plan sheet)
Certification of Completion Package — submitted after installation and
prior to permit final
1) Landscape Installation Certificate of Completion form.
2) Irrigation audit report by certified irrigation auditor or
documentation of enrollment in a regional or local water supplier's
water conservation program, and documentation that the MAWA and
EAWU information for the landscape project has been submitted to
the City and /or local water supplier. (Example program — MWDOC's
Landscape Performance Program ).
3) Irrigation scheduling parameters used to set the controller.
4) Landscape and irrigation maintenance schedules.
JGII -..., ,,,cation Process: will streamline the permitting process and
reduce costs for applicant and the City.
1) Prior to permit issuance and installation —the landscape designer
must sign Certificate of Design form, which includes their license
number and /or professional stamp, stating landscape design is in
conformance with the City ordinance and requirements of the design
standards document. A permit will not be issued unless the
Landscape Documentation Package is complete, including the
certification form.
2) After installation and prior to permit final — the installation
contractor or designer must sign Certificate of Completion form
stating installation is complete and in substantial conformance with
the original plan. The permit cannot be finaled until Landscape
Installation Certificate of Completion Package is accepted by the City.