Rain Bird MWELO 2015 User Manual

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MWELO 2015 Compliance Guide to Irrigation-Related Requirements

for New Construction Projects ≥500 Square Feet and Rehabilitated Landscape Projects ≥2500 Square Feet

Easy-to-use guide and compliance tips for irrigation professionals.

MWELO 2015 Compliance Guide to

Irrigation-related Requirements

How to Use This Guide

QUICK INFO:

Quick information or summary about a section or provision.

COMPLIANCE TIP:

General recommendations for compliance.

PRODUCT TIP:

Recommended Rain Bird products that comply with specic MWELO requirements.

Return to interactive table of contents.

This is a general reference guide for compliance with the 2015 California Model Water Ecient Landscape Ordinance (MWELO) for these two types of projects:

• New construction projects with an aggregate landscape area equal to or greater than 500 square feet requiring a building or landscape permit, plan check or design review or

• Rehabilitated landscape projects with an aggregate landscape area equal to or greater than 2,500 square feet requiring a building or landscape permit, plan check, or design review

Exceptions:

• This guide does not address cemeteries, which are also subject to MWELO

• Historical sites, restoration and reclamation projects that do not require permanent irrigation, or botanical gardens and arboretums are exempt from the ordinance

• This guide does not address existing landscapes that do not require permits

This guide is based on information published by the State of California and the California Department of Water Resources. It references only the landscape and irrigation-related provisions of the ordinance and does not represent the entire ordinance. Any information in this guide is for general reference only and is subject to change without notice. For the entire current version and status of the ordinance, please visit

www.water.ca.gov

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Table of Contents

Foreword

Part 1: Irrigation Requirements

492.7 Irrigation Design

492.10 Irrigation Scheduling

492.11 Landscape and Irrigation Maintenance Schedule

492.12 Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis

492.13 Irrigation Eciency

492.5 Soil Management Report

492.6 Landscape Design

492.8 Grading Design Plan

Part 3: Recycled Water, Graywater and Stormwater Requirements

492.14 Recycled Water

492.15 Graywater Systems

492.16 Stormwater Management and Rainwater Retention

492.17 Public Education

492 Provisions for New Construction

492.18 Environmental Review

494 Eective Precipitation

492.1 Compliance with Documentation Package

492.2 Penalties

492.3 Elements of Documentation Package

Part 2: Soil Management, Landscape Design and Grading Design Requirements

Part 4: Public Education Requirements

Part 5: Agency Requirements

Part 6: Documentation

492.4 Water Ecient Landscape Worksheet

492.9 Certicate of Completion

MWELO Appendix A ETo Tables

MWELO Appendix B Water Ecient Landscape Worksheet

MWELO Appendix C Sample Certicate of Completion

Part 7: Background and References

MWELO Backgrounder

490 Purpose

490.1 Applicability

491 Denitions

495 Reporting

Click on a section name below to go directly to the page

How to Use This Guide

QUICK INFO:

Quick information or summary about a section or provision.

COMPLIANCE TIP:

General recommendations for compliance.

PRODUCT TIP:

Recommended Rain Bird products that comply with specic MWELO requirements.

Return to interactive table of contents.

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Foreword

Statement on California’s Drought Conditions

California is facing an unprecedented water crisis, with 98 percent of the state experiencing some level of drought and 44 percent experiencing extreme drought. Governor Brown’s recent mandate for Californians to cut their water use by 25 percent has brought a long-standing issue to the forefront of the state’s consciousness—perhaps even to the world’s. The conversation has nally turned from how we should use less water to how we must use less water.

The Association of California Water Agencies (ACWA) says more than 50 percent of all residential water use in the state of California takes place outdoors. Furthermore, the ACWA estimates that California residents tend to over-water outdoor plants and lawns by as much as 60 percent. These statistics indicate a tremendous opportunity to use this valuable resource more eciently throughout California and the rest of the world.

Rain Bird’s Water Conservation Legacy

California’s current situation strikes a very personal chord for me and my family. Back in the early 1930s, my parents, Clem and Mary LaFetra, established Rain Bird in the family barn in Glendora, California. Our very rst product, the original impact sprinkler, was developed to more eciently irrigate nearby citrus orchards. Today, Rain Bird is a global leader in ecient irrigation, but we have deep roots in California and remain headquartered just a few miles away from where it all began.

Decades before the term “water restrictions” became a part of common vernacular, we recognized the need to protect and eciently use our world’s most precious resource. Our guiding philosophy, The Intelligent Use of Water™, continues to inuence all aspects of our business. Rain Bird has spent the past eight decades developing the industry’s most comprehensive line of water-ecient irrigation solutions for everything from homes and schools to parks, sports elds, golf courses and farms. With ecient irrigation products and practices, it is absolutely possible for the average California resident to reduce outdoor water consumption by 25 percent or more without having to give up the plants, trees and gardens that add so much to our lives.

Championing the Need for Change

We know that water-ecient irrigation products represent just one step down a long path toward positive change. That’s why Rain Bird also focuses on helping people learn how to use water wisely and eciently. From our industryleading training group to our sales and engineering professionals, employees throughout our organization are committed to the Intelligent Use of Water™. Every day, Rain Bird teaches irrigation professionals how to design, install and operate more ecient systems and educate consumers worldwide about responsible outdoor water use.

Today, Rain Bird and our partners in the irrigation and water management industries are in a unique position to make a dierence during this time of water crisis. By working together, we can make it easier for all Californians to signicantly reduce their outdoor water use while still enjoying the many benets that green spaces have to oer. Rain Bird will continue to develop products and initiatives that will help Californians make responsible, informed choices about the ways we all use water. By taking advantage of intelligent watering products and practices today, we can usher in a new era of water eciency and sustainable water use, not just in California, but around the world.

Anthony LaFetra, President Rain Bird Corporation

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Part 1: Irrigation Requirements

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§ 492.7 Irrigation Design Plan

(a) This section applies to landscaped areas requiring permanent irrigation,

not areas that require temporary irrigation solely for the plant establishment period. For the ecient 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) Landscape water meters, dened as either a dedicated water

service meter or private submeter, shall be installed for all non-residential irrigated landscapes of 1,000 sq. ft. but not more than 5,000 sq.ft. (the level at which Water Code 535 applies) and residential irrigated landscapes of 5,000 sq. ft. or greater. A landscape water meter may be either:

1. A customer service meter dedicated to landscape use provided by the local water purveyor; or

2. A privately owned meter or submeter.

(B) Automatic irrigation controllers utilizing either evapotranspiration

or soil moisture sensor data utilizing non-volatile memory shall be required for irrigation scheduling in all irrigation systems.

pressure of the specied irrigation devices, the installation of a pressure regulating device is required to ensure that the dynamic pressure at each emission device is within the manufacturer’s recommended pressure range for optimal performance.

PRODUCT TIP:

(A) LANDSCAPE WATER METERS

offers a complete family of central control,

commercial-grade controllers and flow sensors that,

when designed together, qualify as a water meter or submeter. Rain Bird’s ICWM Series Water Meters irrigation submeters are available through traditional irrigation distribution channels.

ICWM Series Advanced Technology Water Meters

PRODUCT TIP:

(B) AUTOMATIC IRRIGATION CONTROLLERS

Rain Bird oers a full line of smart controllers, all with non-volatile memory.

Rain Bird Controller Family

PRODUCT TIP:

(C.1) WATER PRESSURE

solutions to increase and decrease pressure to operate at optimal water pressure. Use a pump to increase pressure.

Rain Bird oers

Rain Bird

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 ow reading of the water supply shall be measured at the point of connection. These pressure and ow 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.

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ACLP Series Pump Stations

Use pressure-regulating sprays and pressure-regulating

rotors and drip lters to decrease pressure.

PRS-SAM Rotors and Sprays

Pressure-Regulating Filter (RBY)

§ 492.7 Irrigation Design Plan

(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-o valves (such as a gate valve, ball valve, or

buttery 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.

(F) Backow 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 backow prevention requirements.

(G) Flow sensors that detect high ow conditions created by system

damage or malfunction are required for all on non-residential landscapes and residential landscapes of 5000 sq. ft. or larger.

(H) Master shut-o valves are required on all projects except

landscapes that make use of technologies that allow for the individual control of sprinklers that are individually pressurized in a system equipped with low pressure shut down features.

(I) The irrigation system shall be designed to prevent runo, low

head drainage, overspray, or other similar conditions where irrigation water ows onto non-targeted areas, such as adjacent property, non-irrigated areas, hardscapes, roadways, or structures.

PRODUCT TIP:

(D) WEATHER SENSORS

wireless rain/freeze sensors. Anemometers are also

available with central control.

WR2 Wireless Rain Freeze Sensor

WS-PRO LT Weather Station | IQ Remote Water Management

PRODUCT TIP:

(G) FLOW SENSORS

family of ow sensors.

Rain Bird oers

Rain Bird oers a complete

(J) Relevant information from the soil management plan, such as soil

type and inltration rate, shall be utilized when designing irrigation systems.

(K) The design of the irrigation system shall conform to the

hydrozones of the landscape design plan.

(L) The irrigation system must be designed and installed to meet,

at a minimum, the irrigation eciency criteria as described in Section 492.4 regarding the Maximum Applied Water Allowance.

(M)

All irrigation emission devices must meet the requirements set in the American National Standards Institute (ANSI) standard, American Society of Agricultural and Biological Engineers’/ International Code Council’s (ASABE/ICC) 802-2014 Landscape Irrigation Sprinkler and Emitter Standard, All sprinkler heads installed in the landscape must document a distribution uniformity low quarter of 0.65 or higher using the protocol dened in ASABE/ICC 802-2014.

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Flow Sensor Family

PRODUCT TIP:

(M)

IRRIGATION EMISSION DEVICES

Bird® HE- VAN, U-Series, R-VAN and R-Series Nozzles all meet the requirements of ASABE/ICC 802-2014 and achieve DULQ of 70% or greater.

HE-VAN U-Series

R-VAN

Rain

§ 492.7 Irrigation Design Plan

(N) It is highly recommended that the project applicant

or local agency inquire with the local water purveyor about peak water operating demands (on the water supply system) or water restrictions that may impact the eectiveness of the irrigation system.

(O) In mulched planting areas, the use of low volume

irrigation is required to maximize water inltration into the root zone.

(P) Sprinkler heads and other emission devices shall have

matched precipitation rates, unless otherwise directed by the manufacturer’s recommendations.

(Q) Head to head coverage is recommended. However, sprinkler

spacing shall be designed to achieve the highest possible distribution uniformity using the manufacturer’s recommendations.

(R) Swing joints or other riser-protection components are

required on all risers subject to damage that are adjacent to hardscapes or in high trac areas of turfgrass.

(S) Check valves or anti-drain valves are required on all

sprinkler heads where low point drainage could occur.

(T) Areas less than ten (10) feet in width in any direction shall

be irrigated with subsurface irrigation or other means that produces no runo or overspray.

COMPLIANCE TIP:

(O) LOW-VOLUME IRRIGATION

mulched planting areas.

Xeri-Bug™ Emitters

PRODUCT TIP:

(P) MATCHED PRECIPITATION RATES (MPR)

Rain Bird oers a full line of matched precipitation rate

spray nozzles and MPR nozzles for 5000 Series Rotors.

HE-VAN U-Series

R-VAN

PRODUCT TIP:

(R) SWING JOINTS

assemblies for sprays and turf swing joints for rotors.

5000 MPR

Rain Bird has swing

is required in

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TSJ/TSJ PRS Series Swing Joints

PRODUCT TIP:

(S) CHECK VALVES

for sprays, rotors and drip to prevent drainage at low points or when the sprinkler is o or damaged.

PRS-SAM Rotors & Sprays XFCV Dripline

PRODUCT TIP:

(T)

AREAS LESS THAN 10'

XFCV, and XFS-CV irrigation for areas less than 10'

XFS Subsurface Dripline

Rain Bird oers check valves

Use Rain Bird XFS,

XFS-CV Subsurface Dripline

§ 492.7 Irrigation Design Plan

(U) Overhead irrigation shall not be permitted within 24 inches of

any non-permeable surface. Allowable irrigation within the setback from non-permeable surfaces may include drip, drip line, or other low ow 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 modied if:

1. The landscape area is adjacent to permeable surfacing and no runo occurs; or

2. The adjacent non-permeable surfaces are designed and constructed to drain entirely to landscaping; or

3. The irrigation designer species 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)(I). Prevention of over-spray and runo must be conrmed during the irrigation audit.

(V) Slopes greater than 25% shall not be irrigated with an irrigation

system with a application rate exceeding 0.75 inches per hour. This restriction may be modied if the landscape designer species an alternative design or technology, as part of the Landscape Documentation Package, and clearly demonstrates no runo or erosion will occur. Prevention of runo and erosion must be conrmed during the irrigation audit.

PRODUCT TIP:

(U) 24" SETBACK

low volume irrigation solutions to irrigate within

the 24" setback.

Xeri-Bug™ Emitters

PRODUCT TIP:

(V)

SLOPES and 5000 Series Rotors with MPR nozzles have a precipitation rate of 0.6 in./hr.

R-VAN 5000 MPR

PRODUCT TIP:

systems.

Rain Bird has a full line of

Rain Bird’s low precipitation rate R-VAN

The Root Watering System (RWS) enables

(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.

shrubs, groundcovers, and turf to facilitate the appropriate irrigation of trees. The mature size and extent of the root zone shall be considered when designing irrigation for the tree.

(D) Individual hydrozones that mix plants of moderate and low water

use, or moderate and high water use, may be allowed if:

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.

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RWS Root Watering System

§ 492.7 Irrigation Design Plan

(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 backow 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;

QUICK INFO:

(b) IRRIGATION DESIGN PLAN

Note the requirements for the irrigation design plan.

QUICK INFO:

(4) FLOW RATE

same as precipitation rate.

Note that application rate is the

(5) Recycled water irrigation systems as specied in Section 492.14;

(6) The following statement: “I have complied with the criteria of

the ordinance and applied them accordingly for the ecient use of water in the irrigation design plan”; and

(7) The signature of a licensed landscape architect, certied

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.

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§ 492.10 Irrigation Scheduling

Certicate of Completion

§ 492.10 Irrigation Scheduling

(a) For the ecient 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:

Irrigation scheduling shall be regulated by automatic irrigation controllers.

(1)

(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 dier 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, ow 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 Allowance (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:

QUICK INFO:

(492.10) IRRIGATION SCHEDULING

Note that the irrigation schedule parameters must be included with the Certicate of Completion.

COMPLIANCE TIPS:

(2) HOURS ALLOWED

between 8 p.m. and 10 a.m. or to local water windows, if stricter.

(3) SCHEDULE CONSIDERATIONS

• Reclaimed or other water sources high in salts or sites with salt water intrusion may require leaching.

• Adjust valves for proper ow rates and closing speeds.

• Rene irrigation schedules using real-time data from weather stations and soil moisture sensors.

Schedule irrigation

(A) The plant establishment period;

(B) The established landscape; and

(5) Each irrigation schedule shall consider for each station all of the

following that apply:

(A) Irrigation interval (days between irrigation);

Irrigation run times (hours or minutes per irrigation event to avoid runo );

(B)

(C)

Number of cycle starts required for each irrigation event to avoid runo;

(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;

(H) Soil type;

(I) Slope factor setting;

(J) Shade factor setting; and

(K) Irrigation uniformity or eciency setting.

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§ 492.11 Landscape and Irrigation

Certicate of Completion

Maintenance Schedule

§ 492.11 Landscape and Irrigation Maintenance Schedule

(a) Landscapes shall be maintained to ensure water use eciency.

A regular maintenance schedule shall be submitted with the Certicate of Completion.

(b) A regular maintenance schedule shall include, but not be limited to,

routine inspection; auditing, adjustment and repair of the irrigation system and its components; aerating and dethatching turf areas; topdressing with compost, replenishing mulch; fertilizing; pruning; weeding in all landscape areas, and removing obstructions to emission devices. Operation of the irrigation system outside the normal watering window is allowed for auditing and system maintenance.

installed components or their equivalents or with components with greater eciency.

(d) A project applicant is encouraged to implement established landscape

industry sustainable Best Practices for all landscape maintenance activities.

QUICK INFO:

(492.11) LANDSCAPE AND IRRIGATION MAINTENANCE SCHEDULE

maintenance schedule must be submitted as part of the .

A landscape and

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§ 492.12 Irrigation Audit, Irrigation Survey,

Certicate of Completion

and Irrigation Water Use Analysis

§ 492.12 Irrigation Audit, Irrigation Survey, and Irrigation Water Use Analysis

(a) All landscape irrigation audits shall be conducted by a local agency

landscape irrigation auditor or a third party certied landscape irrigation auditor. Landscape audits shall not be conducted by the person who designed the landscape or installed the landscape.

(b) In large projects or projects with multiple landscape installations

(i.e. production home developments) an auditing rate of 1 in 7 lots or approximately 15% will satisfy this requirement.

December 1, 2015, as described in Section 490.1:

(1) The project applicant shall submit an irrigation audit report with the

Certicate 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 o that causes overland ow, and preparation of an irrigation schedule, including conguring irrigation controllers with application rate, soil types, plant factors, slope, exposure and any other factors necessary for accurate programming;

(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.

QUICK INFO:

(492.12) IRRIGATION AUDITS

• Submit an irrigation audit with the

Certicate of Completion.

• Landscape audits must be conducted by either a local agency or a third-party certied landscape irrigation auditor.

• Neither the designer nor the installer may conduct the audit.

QUICK INFO:

(b) PRODUCTION HOMES

multiple landscape installations require a 15% audit rate (1 in 7 lots).

Large projects with

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§ 492.13 Irrigation Eciency

(a) For the purpose of determining Estimated Total Water Use, average

irrigation eciency is assumed to be 0.75 for overhead spray devices and

0.81 for drip system devices.

QUICK INFO:

(492.13) IRRIGATION EFFICIENCY You no longer have to calculate irrigation eciency. Use:

• 0.75 for overhead spray devices

• 0.81 for drip system devices

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Part 2: Soil Management, Landscape Design and

Grading Design Requirements

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§ 492.5 Soil Management Report

(a) In order to reduce runo 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 shall include:

1. Soil texture;

2. Inltration rate determined by laboratory test or soil texture

inltration rate table;

3. pH;

4. Total soluble salts;

5. Sodium;

6. Percent organic matter; and

7. Recommendations

QUICK INFO:

(492.5) SOIL MANAGEMENT REPORT

Note the emphasis on proper soils and analysis.

developments) a soil sampling rate of 1 in 7 lots or approximately 15% will satisfy this requirement. Large landscape projects shall sample at a rate equivalent to 1 in 7 lots.

(2) The project applicant, or his/her designee, shall comply with one of

the following:

(A) If signicant 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 signicant mass grading is planned, the soil analysis report shall be

submitted to the local agency as part of the Certicate 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 Certicate of Completion.

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§ 492.6 Landscape Design Plan

(a) For the ecient 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. Methods to achieve water eciency shall include one or more of the following:

1. Protection and preservation of native species and natural vegetation;

2. Selection of water-conserving plant, tree and turf species,

especially local native plants;

3. Selection of plants based on local climate suitability, disease and pest resistance;

4. Selection of trees based on applicable local tree ordinances or tree shading guidelines, and size at maturity as appropriate for the planting area; and

5. Selection of plants from local and regional landscape program plant lists.

QUICK INFO:

492.6. LANDSCAPE DESIGN PLAN

Note the emphasis on plant selection and hydrozones.

6. Selection of plants from local Fuel Modication Plan Guidelines.

(B) Each hydrozone shall have plant materials with similar water use,

with the exception of hydrozones with plants of mixed water use, as specied in Section 492.7(a)(2)(D).

their adaptability to the climatic, geologic, and topographical conditions of the project site. Methods to achieve water eciency shall include one or more of the following:

1. Use the Sunset Western Climate Zone System which takes into account temperature, humidity, elevation, terrain, latitude, and varying degrees of continental and marine inuence 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]; allow for adequate soil volume for healthy root growth; and

3. Consider the solar orientation for plant placement to maximize summer shade and winter solar gain.

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§ 492.6 Landscape Design Plan

(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) High water use plants, characterized by a plant factor of 0.7 to 1.0,

are prohibited in street medians.

(F) A landscape design plan for projects in re-prone areas shall

address re 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 reprone plant materials and highly ammable mulches. Refer to the local Fuel Modication Plan guidelines.

(G) The use of invasive plant species, such as those listed by the

California Invasive Plant Council, is strongly discouraged.

(H) The architectural guidelines of a common interest development,

which include community apartment projects, condominiums, planned developments, and stock cooperatives, shall not prohibit or include conditions that have the eect of prohibiting the use of low-water use plants as a group.

(2) Water Features

QUICK INFO:

(D) TURF

than 25% where the toe of the slope is adjacent to an impermeable hardscape.

Slope percent = rise divided by run x 100.

QUICK INFO:

(2) WATER FEATURES

systems are required and recycled water use is encouraged.

Turf is not allowed on slopes greater

Recirculating water

(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.

use hydrozone area of the water budget calculation.

(D) Pool and spa covers are highly recommended.

(3) Soil Preparation, Mulch and Amendments

(A) Prior to the planting of any materials, compacted soils shall be

transformed to a friable condition. On engineered slopes, only amended planting holes need meet this requirement.

(B) Soil amendments shall be incorporated according to

recommendations of the soil report and what is appropriate for the plants selected (see Section 492.5).

four cubic yards per 1,000 square feet of permeable area shall be incorporated to a depth of six inches into the soil. Soils with greater than 6% organic matter in the top 6 inches of soil are exempt from adding compost and tilling.

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§ 492.6 Landscape Design Plan

Section 492.16

(D) A minimum three inch (3"

) layer of mulch shall be applied on all exposed soil surfaces of planting areas except in turf areas, creeping or rooting groundcovers, or direct seeding applications where mulch is contraindicated. To provide habitat for beneficial insects and other wildlife, up to 5% of the landscape area may be left without mulch. Designated insect habitat must be included in the landscape design plan as such.

(E) Stabilizing mulching products shall be used on slopes that meet

current engineering standards.

(F) The mulching portion of the seed/mulch slurry in hydro-seeded

applications shall meet the mulching requirement.

(G) Organic mulch materials made from recycled or post-consumer

shall take precedence over inorganic materials or virgin forest products unless the recycled post-consumer organic products are not locally available. Organic mulches are not required where prohibited by local Fuel Modification Plan Guidelines or other applicable local ordinances.

(b) The landscape design plan, at a minimum, shall:

(1) Delineate and label each hydrozone by number, letter, or other method;

(2) Identify each hydrozone as low, moderate, high water, or mixed water

use. Temporarily irrigated areas of the landscape shall be included in the low water use hydrozone for the water budget calculation;

QUICK INFO:

(D) SOIL PREPARATION, MULCH AND AMENDMENTS

on all exposed soil surfaces, except:

• Turf areas

• Creeping or rooting groundcovers

• Direct seeding applications where mulch is contraindicated.

• In designated insect habitats, up to 5% of landscaped area.

" of mulch is required

At least 3

COMPLIANCE TIP:

(D) 3" Mulch Layer

Mulch can obscure secondary utility boxes containing ush valves for drip irrigation systems. Install a drip irrigation system indicator to more easily locate the ush point.

QUICK INFO:

(b) LANDSCAPE DESIGN PLAN

requirements of the landscape design plan.

QUICK INFO:

(10) LANDSCAPE DESIGN PLAN

to Section 492.16 for examples of stormwater best management practices

Note the

Refer

(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, installation details, and 24-hour retention or inltration capacity of any applicable stormwater best management practices that encourage on-site retention and inltration of stormwater. Project applicants shall refer to the local agency or regional Water Quality Control Board for information on any applicable stormwater technical requirements. Stormwater best management practices are encouraged in the landscape design plan and examples are provided in Section 492.16.

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§ 492.6 Landscape Design Plan

(11)

Identify any applicable rain harvesting or catchment technologies as discussed in Section 492.16 and their 24-hour retention or inltration capacity;

(12)

Identify any applicable graywater discharge piping, system components and area(s) of distribution;

(13)

Contain the following statement: “I have complied with the criteria of the ordinance and applied them for the ecient use of water in the landscape design plan”; and

(14)

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, 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 Agriculture Code.)

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§ 492.8 Grading Design Plan

(a) For the ecient use of water, grading of a project site shall be designed

to minimize soil erosion, runo 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 satises this requirement.

(1) The project applicant shall submit a landscape grading plan that

indicates nished congurations and elevations of the landscape area including:

(A) Height of graded slopes;

(B) Drainage patterns;

(D) Finish grade; and

(E) Stormwater retention improvements, if applicable.

(2) To prevent excessive erosion and runo, it is highly recommended

that the project applicants:

(A) Grade so that all irrigation and normal rainfall remains within

property lines and does not drain on to non-permeable hardscapes;

QUICK INFO:

(492.8) GRADING DESIGN PLAN

Design to minimize soil erosion, runo and water waste.

(B) Avoid disruption of natural drainage pattern and undisturbed soil; and

(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 ecient us of water in the grading design plan” and shall bear the signature of a licensed professional as authorized by law.

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Part 3: Recycled Water, Graywater and

Stormwater Requirements

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§ 492.14 Recycled Water

(a) The installation of recycled water irrigation systems shall allow for the

current and future use of recycled water.

(b) All recycled water irrigation systems shall be designed and operated in

accordance with all applicable local and State laws.

The ET Adjustment Factor for new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0.

PRODUCT TIP:

(492.14) RECYCLED WATER Landscapes using recycled water are considered Special Landscape Areas (SLA). SLAs have an ET Adjustment Factor (ETAF) of 1.0.

Rain Bird oers components designed specically to withstand the harsh conditions found in recycled water, like the RD1800™ Series Sprays and

PESB-R Series Valves.

RD1800™ Series Sprays | PESB-R Series Valves

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§ 492.15 Graywater Systems

ETWU

Section 490.1 (d)

§ 492.15 Graywater Systems

(a) Graywater systems promote the ecient use of water and are

encouraged to assist in on-site landscape irrigation. All graywater systems shall conform to the California Plumbing Code (Title 24, Part 5, Chapter 16) and any applicable local ordinance standards. Refer to § 490.1 (d) for the applicability of this ordinance to landscape areas less than 2,500 square feet with the Estimated Total Water Use met entirely by graywater.

QUICK INFO:

(492.15) GRAYWATER

encouraged. Refer to Section 490.1 (d) for ordinance applicability to landscape areas < 2,500 sq.ft. with

ETWU met entirely by graywater.

Graywater systems are

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§ 492.16 Stormwater Management and Rainwater Retention

(a) Stormwater management practices minimize runo and increase

inltration which recharges groundwater and improves water quality. Implementing stormwater best management practices into the landscape and grading design plans to minimize runo and to increase on-site rainwater retention and inltration are encouraged.

(b) Project applicants shall refer to the local agency or Regional Water

Quality Control Board for information on any applicable stormwater technical requirements.

water retention and inltration. Refer to § 492.6(a)(3).

(d) It is strongly recommended that landscape areas be designed for capture

and inltration capacity that is sucient to prevent runo from impervious surfaces (i.e. roof and paved areas) from either: the one inch, 24-hour rain event or (2) the 85th percentile, 24-hour rain event, and/or additional capacity as required by any applicable local, regional, state or federal regulation.

(e) It is recommended that storm water projects incorporate any of the

following elements to improve on-site storm water and dry weather runo capture and use:

PRODUCT TIP:

(492.16) STORMWATER MANAGEMENT

Rain Bird oers a complete family of

drainage products.

Rain Bird® Drainage Products

• Grade impervious surfaces, such as driveways, during construction to drain to vegetated areas.

• Minimize the area of impervious surfaces such as paved areas, roof and concrete driveways.

• Incorporate pervious or porous surfaces (e.g., gravel, permeable pavers or blocks, pervious or porous concrete) that minimize runo.

• Direct runo from paved surfaces and roof areas into planting beds or landscaped areas to maximize site water capture and reuse.

• Incorporate rain gardens, cisterns, and other rain harvesting or catchment systems.

• Incorporate inltration beds, swales, basins and drywells to capture storm water and dry weather runo and increase percolation into the soil.

• Consider constructed wetlands and ponds that retain water, equalize excess ow, and lter pollutants.

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Part 4: Public Education Requirements

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§ 492.17 Public Education

(a) Publications. Education is a critical component to promote the ecient

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 or water supplier/purveyor shall provide information

to owners of permitted renovations and new, single-family residential homes regarding the design, installation, management, and maintenance of water ecient landscapes based on a water budget.

(b) Model Homes. All model homes that are landscaped shall use signs

and written information to demonstrate the principles of water ecient landscapes described in this ordinance.

(1) Signs shall be used to identify the model as an example of a water

ecient landscape featuring elements such as hydrozones, irrigation equipment, and others that contribute to the overall water ecient theme. Signage shall include information about the site water use as designed per the local ordinance; specify who designed and installed the water ecient landscape; and demonstrate low water use approaches to landscaping such as using native plants, graywater systems, and rainwater catchment systems.

(2) Information shall be provided about designing, installing, managing,

and maintaining water ecient landscapes.

QUICK INFO:

(492.17) PUBLIC EDUCATION

Rain Bird’s

25 Ways oers practical, eective tips and advice

drawn from the company’s 80-plus years of experience in the irrigation industry. These resources can be used anywhere and by anyone who wants to improve their watering eciency. Visit 25ways.rainbird.com.

COMPLIANCE TIP:

(b) MODEL HOMES SIGNAGE

You can nd customizable signage to promote water eciency on your projects on the 25 Ways web page.

Take a permanent break

from over-watering

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25 WA

Water-smart ideas for

water-smart homeowners

25 WA

This yard only uses what it needs

Water Saving Tips: Text 25WAYS to 555888

Example of 25 Ways Yard Signs

WATER SAVING TIPS

Text 25WAYS to 555888

Water Saving Tips: Text 25WAYS to 555888

25 WA

D40731

Part 5: Agency Requirements

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§ 492 Provisions for New Construction or Rehabilitated Landscapes

(a) A local agency may designate by mutual agreement, 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 dene each entity’s specic responsibilities relating to this ordinance.

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§ 494 Eective Precipitation

(a) A local agency may consider Eective Precipitation (25% of annual

precipitation) in tracking water use and may use the following equation to calculate Maximum Applied Water Allowance:

MAWA= (ETo - Eppt) (0.62) [(0.55 x LA) + (0.45 x SLA)] for residential areas.

MAWA= (ETo-EPPT) (0.62) [(0.45 x LA) + (0.55 x SLA)] for non-residential areas.

Note: Authority cited: Section 65595, Government Code. Reference: Section 65596, Government Code.

QUICK INFO:

(494) EFFECTIVE PRECIPITATION

Refer to Appendix B (page 52).

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§ 492.18 Environmental Review

(a) The local agency must comply with the California Environmental

Quality Act (CEQA), as appropriate.

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Part 6: Documentation

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§ 492.1 Compliance with Landscape Documentation Package

(a) Prior to construction, 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 Ecient 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.

local agency, the project applicant shall:

(1) Receive a permit or approval for the plan check or design review and

record the date of the permit in the Certicate of Completion;

QUICK INFO:

492.1. COMPLIANCE WITH LANDSCAPE DOCUMENTATION PACKAGE

construction, check with your local agency.

Prior to

(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 Ecient Landscape Worksheet to the

local water purveyor.

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§ 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.

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§ 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

(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 ecient landscape ordinance and submit a complete Landscape Documentation Package”.

QUICK INFO:

492.3. ELEMENTS OF THE LANDSCAPE DOCUMENTATION PACKAGE

Must include:

• Project information

• Water ecient landscape worksheet

• Soil management report

• Landscape design plan

• Irrigation design plan

• Grading design plan

(2) Water Ecient 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.

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§ 492.4 Water Ecient Landscape Worksheet

(a) A project applicant shall complete the Water Ecient Landscape

Worksheet in Appendix B which contains information on the plant factor, irrigation method, irrigation eciency, and area associated with each hydrozone. Calculations are then made to show that the evapotranspiration adjustment factor (ETAF) for the landscape project does not exceed a factor of 0.55 for residential areas and 0.45 for non-residential areas, exclusive of Special Landscape Areas. The ETAF for a landscape project is based on the plant factors and irrigation methods selected. The Maximum Applied Water Allowance is calculated based on the maximum ETAF allowed (0.55 for residential areas and

0.45 for non-residential areas) and expressed as annual gallons required. The Estimated Total Water Use (ETWU) is calculated based on the plants used and irrigation method selected for the landscape design. ETWU must be below the MAWA.

(1) In calculating 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.

QUICK INFO:

492.4. WATER EFFICIENT LANDSCAPE WORKSHEET

the Water Ecient Landscape Worksheet. ETo values can be found in the Reference Evapotranspiration Table in Appendix A (page 38).

Refer to Appendix B (page 52) for

COMPLIANCE TIP:

(b)(1) PLANT FACTORS:

• 0.0 - 0.1 = Very Low Water Use Plants

• 0.1 - 0.3 = Low Water Use Plants

• 0.4 - 0.6 = Moderate Water Use Plants

• 0.7 - 1.0 = High Water Use Plants

(b) Water budget calculations shall adhere to the following requirements:

(1) The plant factor used shall be from WUCOLS or from horticultural

researchers with academic institutions or professional associations as approved by the California Department of Water Resources (DWR). The plant factor ranges from 0 to 0.1 for very low water using plants,

0.1 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 identied and their water use

calculated as shown in Appendix B.

(4) ETAF for new and existing (non-rehabilitated) Special Landscape

Areas shall not exceed 1.0.

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§ 492.9 Certicate of Completion

(a) The Certicate of Completion (see Appendix C for a sample certicate)

shall include the following six (6) elements:

(1) Project information sheet that contains:

(A) Date;

(B) Project name;

(D) Project address and location; and

(E) Property owner name, telephone, and mailing address;

(2) Certication 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 signicant changes made in the eld

during construction, these “as-built” or record drawings shall be included with the certication;

(B) A diagram of the irrigation plan showing hydrozones shall be kept

with the irrigation controller for subsequent management purposes.

QUICK INFO:

(492.9) CERTIFICATE OF COMPLETION

Refer to Appendix C (page 53) for a sample of the Certicate of Completion.

(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 Certicate of Completion to the local agency for review;

(2) Ensure that copies of the approved Certicate of Completion are

submitted to the local water purveyor and property owner or his or her designee.

(1) Receive the signed Certicate of Completion from the project applicant;

(2) Approve or deny the Certicate of Completion. If the Certicate of

Completion is denied, the local agency shall provide information to the project applicant regarding reapplication, appeal, or other assistance.

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§ MWELO Appendix A ETo Tables

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 47.2

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 4.4 3.1 1.5 1.2 44.2

ALPINE

Markleeville 0.7 0.9 2.0 3.5 5.0 6.1 7.3 6.4 4.4 2.6 1.2 0.5 40.6

AMADOR

Jackson 1.2 1.5 2.8 4.4 6.0 7.2 7.9 7.2 5.3 3.2 1.4 0.9 48.9

Shanandoah Valley

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 1.2 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 5.3 3.4 1.6 1.0 50.8

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

CONTRA COSTA

Brentwood 1.0 1.5 2.9 4.5 6.1 7.1 7.9 6.7 5.2 3.2 1.4 0.7 48.3

Concord 1.1 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 1.2 1.4 2.4 3.9 5.3 5.6 6.7 5.6 4.7 3.1 1.2 0.7 41.8

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

CONTRA COSTA

Moraga 1.2 1.5 3.4 4.2 5.5 6.1 6.7 5.9 4.6 3.2 1.6 1.0 44.9

Pittsburg 1.0 1.5 2.8 4.1 5.6 6.4 7.4 6.4 5.0 3.2 1.3 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 4.3 3.7 3.0 2.0 0.9 0.5 27.7

EL DORADO

Camino 0.9 1.7 2.5 3.9 5.9 7.2 7.8 6.8 5.1 3.1 1.5 0.9 47.3

FRESNO

Clovis 1.0 1.5 3.2 4.8 6.4 7.7 8.5 7.3 5.3 3.4 1.4 0.7 51.4

Coalinga 1.2 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 1.0 1.8 3.7 5.7 7.3 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 1.2 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 8.5 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 1.0 1.5 3.4 4.8 6.6 7.7 8.4 7.2 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

Reedley 1.1 1.5 3.2 4.7 6.4 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

GLENN

Orland 1.1 1.8 3.4 5.0 6.4 7.5 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 1.1 2.0 3.0 3.7 3.7 3.7 3.7 3.0 2.0 0.9 0.5 27.5

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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

IMPERIAL

Brawley 2.8 3.8 5.9 8.0 10.4 11.5 11.7 10.0 8.4 6.2 3.5 2.1 84.2

Calipatria/Mulberry

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 II 2.5 3.3 5.7 6.9 8.5 8.9 8.6 7.9 6.2 4.5 2.9 2.3 68.2

Seeley 2.7 3.5 5.9 7.7 9.7 10.1 9.3 8.3 6.9 5.5 3.4 2.2 75.4

Westmoreland 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

Yuma 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

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 Jct 2.2 3.3 5.4 7.7 9.8 11.1 11.4 10.1 8.3 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.

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

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

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

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

Bakerseld 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

Bakerseld/Bonanza

Bakerseld/Greenlee

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 3.2 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 7.3 8.5 9.7 11.0 9.4 7.1 5.1 2.6 1.7 72.4

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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

KERN

Isabella Dam 1.2 1.4 2.8 4.4 5.8 7.3 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 7.3 5.4 3.4 1.5 0.9 52.1

Taft 1.3 1.8 3.1 4.3 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 7.3 5.9 3.4 2.1 1.2 52.9

KINGS

Caruthers 1.6 2.5 4.0 5.7 7.8 8.7 9.3 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 8.3 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

LAKE

Lakeport 1.1 1.3 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 3.5 4.9 6.2 7.3 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 4.1 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 51.3

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 46.3

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 2.2 3.4 4.6 5.5 7.4 7.7 7.1 5.9 3.6 2.4 1.1 52.4

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§ MWELO Appendix A ETo Tables

Annual County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

LOS ANGELES

Hollywood Hills 2.1 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 8.5 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 2.3 3.8 4.3 5.5 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 7.3 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 7.3 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 2.2 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 5.3 3.9 2.6 2.0 52.0

Santa Clarita 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

Santa Monica 1.8 2.1 3.3 4.5 4.7 5.0 5.4 5.4 3.9 3.4 2.4 2.2 44.2

MADERA

Chowchilla 1.0 1.4 3.2 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 5.2 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 4.3 2.8 1.3 0.9 43.0

Novato 1.3 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 1.3 0.9 43.0

San Rafael 1.2 1.3 2.4 3.3 4.0 4.8 4.8 4.9 4.3 2.7 1.3 0.7 35.8

MARIPOSA

Coulterville 1.1 1.5 2.8 4.4 5.9 7.3 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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

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 1.1 1.3 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

Sanel Valley 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 1.3 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 7.4 8.2 7.0 5.3 3.4 1.4 0.7 50.0

Merced 1.0 1.5 3.2 4.7 6.6 7.9 8.5 7.2 5.3 3.4 1.4 0.7 51.5

MODOC

Modoc/Alturas 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 7.3 7.2 6.7 5.0 3.9 2.0 1.6 52.6

Castroville 1.4 1.7 3.0 4.2 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

Greeneld 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.

Long Valley 1.5 1.9 3.2 4.1 5.8 6.5 7.3 6.7 5.3 3.6 2.0 1.2 49.1

Monterey 1.7 1.8 2.7 3.5 4.0 4.1 4.3 4.2 3.5 2.8 1.9 1.5 36.0

1.4 1.9 3.6 5.3 6.5 7.3 7.4 6.8 5.1 4.0 2.0 1.5 52.7

Pajaro 1.8 2.2 3.7 4.8 5.3 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 1.3 39.1

Salinas North 1.2 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 2.2 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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

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

Carneros 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 3.5 1.6 1.2 47.7

St Helena 1.2 1.5 2.8 3.9 5.1 6.1 7.0 6.2 4.8 3.1 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 44.3

NEVADA

Grass Valley 1.1 1.5 2.6 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 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

PLACER

Auburn 1.2 1.7 2.8 4.4 6.1 7.4 8.3 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 7.3 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 4.3 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 2.0 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 6.2 3.8 2.4 88.1

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

RIVERSIDE

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 3.1 3.6 6.5 8.3 10.5 11.0 10.8 9.7 8.3 5.9 3.7 2.7 83.9

La Quinta 2.4 2.8 5.2 6.5 8.3 8.7 8.5 7.9 6.5 4.5 2.7 2.2 66.2

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 2.3 68.4

Palm Desert 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 7.2 8.3 8.5 11.6 8.3 7.2 5.9 2.7 1.7 71.1

Rancho California

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 II 2.3 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 1.0 1.6 3.4 4.1 6.5 7.5 8.1 7.1 5.2 3.4 1.5 1.0 50.5

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

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

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 1.4 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 8.3 10.4 11.8 12.2 11.0 8.9 6.1 3.3 2.1 86.6

Barstow NE 2.2 2.9 5.3 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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

SAN BERNARDINO

Chino 2.1 2.9 3.9 4.5 5.7 6.5 7.3 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 7.1 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 75.3

Needles 3.2 4.2 6.6 8.9 1.0 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

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 2.0 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 2.3 54.2

Miramar 2.3 2.5 3.7 4.1 5.1 5.4 6.1 5.8 4.5 3.3 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

Otay Lake 2.3 2.7 .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 2.4 3.8 5.1 6.0 7.0 7.8 7.3 6.0 4.0 2.2 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 5.3 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 2.2 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

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

San Francisco 1.5 1.3 2.4 3.0 3.7 4.6 4.9 4.8 4.1 2.8 1.3 0.7 35.1

SAN JOAQUIN

Farmington 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

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 3.2 1.4 0.6 49.1

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

SAN JOAQUIN

Tracy 1.0 1.5 2.9 4.5 6.1 7.3 7.9 6.7 5.3 3.2 1.3 0.7 48.5

SAN LUIS OBISPO

Arroyo Grande 2.0 2.2 3.2 3.8 4.3 4.7 4.3 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 39.9

Nipomo 2.2 2.5 3.8 5.1 5.7 6.2 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 3.2 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 4.2 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 2.0 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 5.3 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 2.2 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 3.2 3.8 4.6 5.1 5.5 4.5 3.4 2.4 1.8 1.8 40.6

Santa Maria 1.8 2.3 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 2.2 3.5 5.0 5.8 6.2 6.4 6.0 4.5 3.6 2.2 1.7 48.7

Sisquoc 2.1 2.5 3.8 4.1 6.1 6.3 6.4 5.8 4.7 3.4 2.3 1.8 49.2

Solvang 2.0 2.0 3.3 4.3 5.0 5.6 6.1 5.6 4.4 3.7 2.2 1.6 45.6

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

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 6.3 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 6.2 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 5.2 5.0 3.7 3.1 1.6 1.3 40.6

Santa Cruz 1.5 1.8 2.6 3.5 4.3 4.4 4.8 4.4 3.8 2.8 1.7 1.2 36.6

Watsonville 1.5 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 2.2 3.7 4.8 5.3 5.7 5.6 5.3 4.3 3.4 2.4 1.8 46.2

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 0.5 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 4.2 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

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 7.3 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 7.2 8.1 7.1 5.1 3.1 1.5 1.0 49.0

Mt Shasta 0.5 0.9 2.0 3.0 4.5 5.3 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 4.5 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 4.3 2.5 0.9 0.5 39.2

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

SOLANO

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

Dixon 0.7 1.4 3.2 5.2 6.3 7.6 8.2 7.2 5.5 4.3 1.6 1.1 52.1

Faireld 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 1.3 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 7.5 7.9 7.0 5.2 3.5 1.6 1.0 51.0

SONOMA

Bennett Valley 1.1 1.7 3.2 4.1 5.5 6.5 6.6 5.7 4.5 3.1 1.5 0.9 44.4

Cloverdale 1.1 1.4 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 1.4 0.7 40.8

Lincoln 1.2 1.7 2.8 4.7 6.1 7.4 8.4 7.3 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 2.9 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

Windsor 0.9 1.6 3.0 4.5 5.5 6.5 6.5 5.9 4.4 3.2 1.4 1.0 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 7.3 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

1.0 1.6 3.0 4.5 5.6 6.6 7.1 6.3 4.7 3.3 1.5 1.0 46.1

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 3.2 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 1.3 57.3

Turlock 0.9 1.5 3.2 4.7 6.5 7.7 8.2 7.0 5.1 3.4 1.4 0.7 50.2

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

SUTTER

Nicolaus 0.9 1.6 3.2 4.9 6.3 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 1.0 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 3.2 4.7 6.7 8.4 9.0 7.9 6.0 4.2 2.0 1.0 55.5

Red Blu 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 3.3 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 7.7 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

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

Lindcove 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 3.3 5.1 6.8 7.7 7.9 6.9 4.9 3.2 1.5 0.8 50.7

TUOLUMNE

Groveland 1.1 1.5 2.8 4.1 5.7 7.2 7.9 6.6 5.1 3.3 1.4 0.7 47.5

Sonora 1.1 1.5 2.8 4.1 5.8 7.2 7.9 6.7 5.1 3.2 1.4 0.7 47.6

VENTURA

Camarillo 2.2 2.5 3.7 4.3 5.0 5.2 5.9 5.4 4.2 3.0 2.5 2.1 46.1

Oxnard 2.2 2.5 3.2 3.7 4.4 4.6 5.4 4.8 4.0 3.3 2.4 2.0 42.3

Piru 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 2.3 3.3 4.6 4.9 4.9 4.9 5.0 3.7 3.2 2.5 2.2 43.5

Thousand Oaks 2.2 2.6 3.4 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

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§ MWELO Appendix A ETo Tables

Annual

County and City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ETo

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 1.7 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 3.2 4.7 6.1 7.7 8.2 7.2 5.4 3.7 1.7 1.0 51.6

Zamora 1.1 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 Leaet 21426

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§ MWELO Appendix B – Sample Water Ecient Landscape Worksheet

Appendix B – Sample Water Ecient Landscape Worksheet*

WATER EFFICIENT LANDSCAPE WORKSHEET

This worksheet is lled out by the project applicant and it is a required element of the Landscape Documentation Package.

Reference Evapotranspiration (ETo) ____________

Hydrozone #

/Planting

Description

Plant

Factor (PF)

Irrigation

Method

Regular Landscape Areas

Special Landscape Areas

ETAF Calculations

Average ETAF for Regular Landscape Areas must be

0.55 or below for residential areas, and 0.45 or below for non-residential areas.

Regular Landscape Areas

Total ETAF x Area (B)

Total Area (A)

Average ETAF B ÷ A

All Landscape Areas

Total ETAF x Area (B+D)

Total Area (A+C)

Sitewide ETAF (B+D) ÷ (A+C)

Irrigation Eciency

(IE)

ETAF

(PF/IE)

Landscape

Area

(sq. ft.)

Totals (A) (B)

Totals (C) (D)

ETWU Total

Maximum Allowed Water Allowance (MAWA)

Hydrozone #/Planting Description

E.g.

1.) front lawn

2.) low water use plantings

3.) medium water use plantings

Irrigation Method

overhead spray or drip

Irrigation Eciency

0.75 for spray head

0.81 for drip

ETWU (Annual Gallons Required)

ETo x 0.62 x ETAF x Area

where 0.62 is a conversion factor that converts acre-inches per acre per year to gallons per square foot per year.

MAWA (Annual Gallons Allowed)

(ETo) ( 0.62) [ (ETAF x LA) + ((1-ETAF) x SLA)]

where 0.62 is a conversion factor that converts acre-inches per acre per year to gallons per square foot per year, LA is the total landscape area in square feet, SLA is the total special landscape area in square feet, and ETAF is .55 for residential areas and 0.45 for non-residential areas.

ETAF x

Area

Estimated Total

Water Use

(ETWU)

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§ MWELO Appendix C – Sample Certicate of Completion

Appendix C – Sample Certicate of Completion

CERTIFICATE OF COMPLETION

This certicate is lled out by the project applicant upon completion of the landscape project.

PART 1. PROJECT INFORMATION SHEET

Date

Project Name

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

“I/we certify that I/we have received copies of all the documents within the Landscape Documentation Package and the Certicate 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 Ecient Landscape Worksheet (including the Water Budget Calculation) was submitted to the local water purveyor _____________

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§ MWELO Appendix C – Sample Certicate of Completion

Appendix C – Sample Certicate of Completion

PART 2. CERTIFICATION OF INSTALLATION ACCORDING TO THE LANDSCAPE DOCUMENTATION PACKAGE

“I/we certify that based upon periodic site observations, the work has been completed in accordance with the ordinance and that the landscape planting and irrigation installation conform with the criteria and specications of the approved Landscape Documentation Package.”

Signature* Date

Name (print) Telephone No.

Fax No.

Title Email Address

License No. or Certicate 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 492.6.

Attach documentation verifying implementation of recommendations from soil analysis report per ordinance Section 492.6.

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Part 7: Background and References

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§ Backgrounder

By Executive Order

On April 1, 2015, California Governor Jerry Brown issued to make the state more resilient to drought. The order focuses on saving water, increasing enforcement to prevent water waste, streamlining the state’s drought response and investing in new technologies.

Specic actions in the Executive Order that have a direct impact on the green industry include:

• Replacing 50 million square f

• Implementing rebat

• Banning watering of or

• Prohibiting use of potable wat construction

new

In addition, the order directed the Department of Water Resources to update the Model Water Ecient Landscape Ordinance that has regulated water ecient landscape design, installation, maintenance and management since 1992.

e programs to replace inecient household devices

eet of lawns and ornamental turf with drought tolerant landscapes

namental turf on public street medians

er to irrigate unless it is delivered by drip or microspray in

Executive Order B-29-15

mandating statewide water reductions

Who must comply with MWELO

All projects that require a building or landscape permit, plan check or design review and are 1) a new development project with aggregate landscape area ≥ 500 sq. ft. or 2) a rehabilitated landscape with aggregate landscape area ≥ 2,500 sq. ft. must comply with MWELO. All projects with aggregate landscape areas ≤ 2,500 sq. ft. can either comply with the entire ordinance or may use the Prescriptive Checklist Option. (Please refer to Rain Bird’s MWELO Guide for Prescriptive Checklist Option).

Existing landscapes that do not require permits, cemeteries, landscapes using recycled water, and rain water or grey water projects are subject to limited application of MWELO. Historical sites, restoration and reclamation projects that do not require permanent irrigation, or botanical gardens and arboretums are exempt from the ordinance.

Who’s in charge of MWELO

There are numerous entities involved in executing the drought directives:

California Department of Water Resources: DWR is responsible for the management of water use including delivery

to two-thirds of California’s population. They are also responsible for the development of the MWELO. For more information: www.water.ca.gov

California Water Commission: This appointed 9-member panel provides guidance to DWR and is responsible for

approving regulations put forth by DWR, including MWELO. For more information: cwc.ca.gov

State Water Resource Control Board: This is an appointed board responsible for the state’s policy on water quality. They

are also solely responsible for assigning all surface water rights. For more information: www.swrcb.ca.gov

California Building Standards Commission: This is an 11-member appointed commission responsible for the building

standards code, including the Cal Green code, California’s green building standard. For more information: www.bsc.ca.gov

Water Districts: The regional and local water districts are the parties responsible for enforcing regulations such as MWELO.

When it starts

The local water districts and agencies must adopt the ordinance or their own version that must be just as eective) by December 1, 2015. If the local agency does not adopt the ordinance or their own ordinance, MWELO becomes eective be default.

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§ 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 ecient 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, oering re protection, and replacing ecosystems lost to development;

(5) That landscape design, installation, maintenance and management

can and should be water ecient; and

(6) That Section 2 of Article X of the California Constitution species that

the right to use water is limited to the amount reasonably required for the benecial use to be served and the right does not and shall not extend to waste or unreasonable method of use.

QUICK INFO:

Section 490 Provides great insight into the direction of the ordinance.

(b) Consistent with the legislative ndings, the purpose of this

model ordinance is to:

(1) Promote the values and benets of landscaping practices that

integrate and go beyond the conservation and ecient use of water;

(2) Establish a structure for planning, designing, installing, maintaining

and managing water ecient landscapes in new construction and rehabilitated projects by encouraging the use of a watershed approach that requires cross-sector collaboration of industry, government and property owners to achieve the many benets possible;

(3) Establish provisions for water management practices and water

waste prevention for existing landscapes;

(4) Use water eciently 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;

(5) Promote the benets of consistent landscape ordinances with

neighboring local and regional agencies;

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§ 490 Purpose

(6) Encourage local agencies and water purveyors to use economic

incentives that promote the ecient 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 Ecient Landscape Ordinance or its local landscape ordinance.

maintained with the watershed based approach can improve California’s environmental conditions and provide benets and realize sustainability goals. Such landscapes will make the urban environment resilient in the face of climatic extremes. Consistent with the legislative ndings and purpose of the Ordinance, conditions in the urban setting will be improved by:

(1) Creating the conditions to support life in the soil by reducing

compaction, incorporating organic matter that increases water retention, and promoting productive plant growth that leads to more carbon storage, oxygen production, shade, and habitat and esthetic benets.

(2) Minimizing energy use by reducing irrigation water requirements,

reducing reliance on petroleum based fertilizers and pesticides, and planting climate appropriate shade trees in urban areas.

(3) Conserving water by capturing and reusing rainwater and gray

water wherever possible and selecting climate appropriate plants that need minimal supplemental water after establishment.

(4) Protecting air and water quality by reducing power equipment use

and landll disposal trips, selecting recycled and locally sourced materials, and using compost, mulch and ecient irrigation equipment to prevent erosion.

(5) Protecting existing habitat and creating new habitat by choosing

local native plants, climate adapted non-natives and avoiding invasive plants. Utilizing integrated pest management with least toxic methods as the rst course of action.

Note: Authority cited: Section 65593, Government Code. Reference: Sections 65591, 65593 and 65596, Government Code.

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§ 490.1 Applicability

(a) After December 1, 2015, and consistent with Executive Order No. B-29-15,

this ordinance shall apply to all of the following landscape projects:

(1) New construction projects with an aggregate landscape area

equal to or greater than 500 square feet requiring a building or landscape permit, plan check or design review;

(2) Rehabilitated landscape projects with an aggregate landscape area

equal to or greater than 2,500 square feet requiring a building or landscape permit, plan check, or design review;

(3) Existing landscapes limited to Sections 493, 493.1 and 493.2; and

(4) 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) For local land use agencies working together to develop a regional water

ecient landscape ordinance, the reporting requirements of this ordinance shall become eective December 1, 2015 and the remainder of this ordinance shall be eective no later than February 1, 2016.

less may comply with the performance requirements of this ordinance or conform to the prescriptive measures contained in Appendix D.

(d) For projects using treated or untreated gray water or rainwater captured

on site, any lot or parcel within the project that has less than 2500 sq. ft. of landscape and meets the lot or parcel’s landscape water requirement (Estimated Total Water Use) entirely with treated or untreated gray water or through stored rainwater captured on site is subject only to Appendix D section (5).

QUICK INFO:

APPLIES TO ALL PROJECTS THAT REQUIRE BUILDING OR LANDSCAPE PERMIT, PLAN CHECK OR DESIGN REVIEW AND MEET THE FOLLOWING CRITERIA:

• New development projects with an aggregate landscape area ≥ 500 sq. ft.

• Rehabilitated landscape projects with an aggregate landscape area ≥ 2,500 sq. ft.

ALL PROJECTS WITH AGGREGATE LANDSCAPE AREAS ≤ 2,500 SQ. FT. CAN EITHER:

• Comply with the entire ordinance

• Conform to prescriptive measures. Please use MWELO Compliance Guide for the Prescriptive Checklist Option.

QUICK INFO:

(3,4) CEMETERIES AND EXISTING LANDSCAPES

portions of MWELO.

QUICK INFO:

(d) LANDSCAPES USING RECYCLED WATER are Special Landscape Areas and get a larger water budget (ETAF = 1.0).

are subject to only certain

(e) 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) Existing 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.

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§ 491 Denitions

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 a timing device used to

remotely control valves that operate an irrigation system. Automatic irrigation controllers are able to self-adjust and schedule irrigation events using either evapotranspiration (weather-based) or soil moisture data.

pollution or contamination of the water supply due to the reverse ow of water from the irrigation system.

(d) “Certicate of Completion” means the document required under

Section 492.9.

(e) “certied irrigation designer” means a person certied 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 certication program and Irrigation Association’s Certied Irrigation Designer program.

(f ) “certied landscape irrigation auditor” means a person certied 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 certication program and Irrigation Association’s Certied Landscape Irrigation Auditor program.

PRODUCT TIP:

(b) AUTOMATIC IRRIGATION CONTROLLER

residential and commercial smart controllers, weather sensors and soil-moisture sensors.

COMPLIANCE TIP:

(f) CERTIFIED LANDSCAPE IRRIGATION AUDITOR

oers certication classes.

PRODUCT TIP:

(g) CHECK VALVE built-in Seal-a-Matic™ (SAM) check valve in 1800-SAM-PRS Series Sprays and

5000 Series Rotors to prevent drainage when

sprinkler is o or damaged.

PRODUCT TIP:

(l) DRIP IRRIGATION entire family of low-ow emitters and dripline.

Rain Bird oers a full line of

Rain Bird Training

Use Rain Bird’s

Rain Bird oers an

(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 o.

(h) “common interest developments” means community apartment

projects, condominium projects, planned developments, and stock cooperatives per Civil Code Section 1351.

(i) “compost” means the safe and stable product of controlled biologic

decomposition of organic materials that is benecial to plant growth.

(j) “conversion factor (0.62)” means the number that converts acre-inches

per acre per year to gallons per square foot per year.

(k) “distribution uniformity” means the measure of the uniformity of

irrigation water over a dened area.

(l) “drip irrigation” means any non-spray low volume irrigation system

utilizing emission devices with a ow rate measured in gallons per hour. Low volume irrigation systems are specically designed to apply small volumes of water slowly at or near the root zone of plants.

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§ 491 Denitions

(m) “ecological restoration project” means a project where the site is

intentionally altered to establish a dened, indigenous, historic ecosystem.

(n) “eective precipitation” or “usable rainfall” (Eppt) means the portion of

total precipitation which becomes available for plant growth.

(o) “emitter” means a drip irrigation emission device that delivers water slowly

from the system to the soil.

(p) “established landscape” means the point at which plants in the

landscape have developed signicant root growth into the soil. Typically, most plants are established after one or two years of growth.

(q) “establishment period of the plants” means the rst year after installing

the plant in the landscape or the rst two years if irrigation will be terminated after establishment. Typically, most plants are established after one or two years of growth. Native habitat mitigation areas and trees may need three to ve years for establishment.

(r) “Estimated Total Water Use” (ETWU) means the total water used for the

landscape as described in Section 492.4.

(s) “ET adjustment factor” (ETAF) means a factor of 0.55 for residential

areas and 0.45 for non-residential areas, that, when applied to reference evapotranspiration, adjusts for plant factors and irrigation eciency, two major inuences upon the amount of water that needs to be applied to the landscape. The ETAF for new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0. The ETAF for existing non-

rehabilitated landscapes is 0.8.

QUICK INFO:

(s) ET ADJUSTMENT FACTOR (ETAF)

• Residential ETAF = 0.55

• Non-Residential ETAF = 0.45

• Special Landscape Area (SLA) ETAF = 1.0

• Existing Landscapes ETAF = 0.8

PRODUCT TIP:

) FLOW SENSOR

complete family of flow sensors. When designed with the ESP-LXMEF, ESP-LXD, ESP-

LXIVM or our Central Control Platforms, this also

qualifies as a water meter or submeter.

Rain Bird oers a

(t) “evapotranspiration rate” means the quantity of water evaporated from

adjacent soil and other surfaces and transpired by plants during a specied time.

(u) “ow rate” means the rate at which water ows through pipes, valves and

emission devices, measured in gallons per minute, gallons per hour, or cubic feet per second.

(v) “ow sensor” means an inline device installed at the supply point of the

irrigation system that produces a repeatable signal proportional to ow rate. Flow sensors must be connected to an automatic irrigation controller, or ow monitor capable of receiving ow signals and operating master valves. This combination ow sensor/ controller may also function as a landscape water meter or submeter.

(w) “friable” means a soil condition that is easily crumbled or loosely

compacted down to a minimum depth per planting material requirements, whereby the root structure of newly planted material will be allowed to spread unimpeded.

(x) “Fuel Modication Plan Guideline” means guidelines from a local re

authority to assist residents and businesses that are developing land or building structures in a re hazard severity zone.

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§ 491 Denitions

(y) “graywater” means untreated wastewater that has not been

contaminated by any toilet discharge, has not been aected by infectious, contaminated, or unhealthy bodily wastes, and does not present a threat from contamination by unhealthful processing, manufacturing, or operating wastes. “Graywater” includes, but is not limited to, wastewater from bathtubs, showers, bathroom washbasins, clothes washing machines, and laundry tubs, but does not include wastewater from kitchen sinks or dishwashers. Health and Safety Code Section 17922.12.

(z) ”hardscapes” means any durable material (pervious and non-pervious).

(aa) “hydrozone” means a portion of the landscaped area having plants

with similar water needs and rooting depth. A hydrozone may be irrigated or non-irrigated.

(bb) “inltration 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).

(cc) “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. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database.

QUICK INFO:

(y) GRAYWATER use is encouraged.

COMPLIANCE TIP:

(dd) IRRIGATION AUDIT the Certied Landscape Irrigation Auditor classes. The Rain Bird Factory Trained MWELO Expert course provides the expertise you need to successfully navigate MWELO requirements. Go to www.rainbirdservices.com.

QUICK INFO:

(ee) IRRIGATION EFFICIENCY (IE) Note that irrigation eciency is preset at 0.75

for overhead spray devices and 0.81 for drip systems. No math required.

Rain Bird oers

(dd) “irrigation audit” means an in-depth evaluation of the performance

of an irrigation system conducted by a Certied 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 runo that causes overland ow, and preparation of an irrigation schedule. The audit must be conducted in a manner consistent with the Irrigation Association’s Landscape Irrigation Auditor Certication program or other U.S. Environmental Protection Agency “Watersense” labeled auditing program.

(ee) “irrigation eciency” (IE) means the measurement of the amount of

water benecially used divided by the amount of water applied. Irrigation eciency is derived from measurements and estimates of irrigation system characteristics and management practices. The irrigation eciency for purposes of this ordinance are 0.75 for overhead spray devices and 0.81 for drip systems.

( ) “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.

(gg) “irrigation water use analysis” means an analysis of water use data

based on meter readings and billing data.

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Landscape Documentation Package

§ 491 Denitions

(hh) “landscape architect” means a person who holds a license to practice

landscape architecture in the state of California Business and Professions Code, Section 5615.

(ii) “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).

(jj) “landscape contractor” means a person licensed by the state of

California to construct, maintain, repair, install, or subcontract the development of landscape systems.

(kk) “Landscape Documentation Package” means the documents

required under Section 492.3.

(ll) “landscape project” means total area of landscape in a project as

dened in “landscape area” for the purposes of this ordinance, meeting requirements under Section 490.1.

(mm)

“landscape water meter” means an inline device installed at the

irrigation supply point that measures the ow of water into the irrigation system and is connected to a totalizer to record water use.

QUICK INFO:

(kk) LANDSCAPE DOCUMENT PACKAGE

Make sure you review Section 492.3

for the Landscape Documentation Package.

COMPLIANCE TIP:

(jj)

Professionals who have industry certication from the Irrigation Association (IA), California Landscape Contractor’s Association (CLCA), Qualied Water Ecient Landscaper (QWEL) or Rain Bird Factory Trained have taken steps to advance their

qualifications and professionalism.

PRODUCT TIP:

(mm) LANDSCAPE WATER METER

Rain Bird oers a complete family of central

control, commercial-grade controllers and ow sensors that, when designed together,

qualify as a water meter or submeter.

PRODUCT TIP:

(ss) MASTER SHUT-OFF VALVE

Rain Bird offers plastic, brass valves that can be used as master shut-off vlaves.

(nn) “lateral line” means the water delivery pipeline that supplies water to

the emitters or sprinklers from the valve.

(oo) “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 project.

(pp) “local water purveyor” means any entity, including a public agency,

city, county, or private water company that provides retail water service.

(qq) “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 specically designed to apply small volumes of water slowly at or near the root zone of plants.

(rr) “main line” means the pressurized pipeline that delivers water from the

water source to the valve or outlet.

(ss) “master shut-o valve” is an automatic valve installed at the irrigation

supply point which controls water ow into the irrigation system. When this valve is closed water will not be supplied to the irrigation system. A master valve will greatly reduce any water loss due to a leaky station valve.

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§ 491 Denitions

(tt) “Maximum Applied Water Allowance” (MAWA) means the upper

limit of annual applied water for the established landscaped area as specied 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. MAWA = (ETo) (0.62) [(ETAF x LA) + ((1-ETAF) x SLA)]

(uu) “median” is an area between opposing lanes of trac that may be

unplanted or planted with trees, shrubs, perennials, and ornamental grasses.

(vv) “microclimate” means the climate of a small, specic 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 reective surfaces.

(ww)

“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.

(xx) “mulch” means any organic material such as leaves, bark, straw, compost,

or inorganic mineral materials such as rocks, gravel, or decomposed granite left loose and applied to the soil surface for the benecial purposes of reducing evaporation, suppressing weeds, moderating soil temperature, and preventing soil erosion.

QUICK INFO:

(tt) MAXIMUM APPLIED WATER ALLOWANCE (MAWA)

Appendix B (page 52).

Refer to

(yy) “new construction” 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.

(zz) “non-residential landscape” means landscapes in commercial,

institutional, industrial and public settings that may have areas designated for recreation or public assembly. It also includes portions of common areas of common interest developments with designated recreational areas.

(aaa) “operating pressure” means the pressure at which the parts of an

irrigation system are designed by the manufacturer to operate.

(bbb) “overhead sprinkler irrigation systems” or “overhead spray

irrigation systems” means systems that deliver water through the air

(e.g., spray heads and rotors).

(ccc) “overspray” means the irrigation water which is delivered beyond the

target area.

(ddd) “parkway” means the area between a sidewalk and the curb or

trac lane. It may be planted or unplanted, and with or without pedestrian egress.

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§ 491 Denitions

(eee) “permit” means an authorizing document issued by local agencies for

new construction or rehabilitated landscapes.

(f ) “pervious” means any surface or material that allows the passage of

water through the material and into the underlying soil.

(ggg) “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 very low water use plants is 0 to 0.1, the plant factor range for low water use plants is 0.1 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 ordinance are derived from the publication “Water Use Classication of Landscape Species”. Plant factors may also be obtained from horticultural researchers from academic institutions or professional associations as approved by the California Department of Water Resources (DWR).

(hhh) “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.

(iii) “rain sensor” or “rain sensing shuto device” means a component

which automatically suspends an irrigation event when it rains.

QUICK INFO:

(ggg) PLANT FACTOR or PLANT WATER USE FACTOR

Water Use Classication of Landscape Species

(WUCOLS)*

• Very Low Water Use Plants = 0 - 0.1

• Low Water Use Plants = 0.1 - 0.3

• Moderate Water Use Plants = 0.4 - 0.6

• High Water Use Plants = 0.7 - 1.0

* California DWR-approved horticultural

researchers, academic institutions or professional associations are alternative sources for plant factors.

QUICK INFO:

(kkk) RECREATIONAL AREA Areas, excluding private single family residential areas, designated for active play, recreation or public assembly in parks, sports elds, picnic grounds, amphitheaters or golf course tees, fairways, roughs, surrounds and greens.

Derived from

(jjj) “record drawing” or “as-builts” means a set of reproducible drawings

which show signicant changes in the work made during construction and which are usually based on drawings marked up in the eld and other data furnished by the contractor.

(kkk) “recreational area” means areas, excluding private single family

residential areas, designated for active play, recreation or public assembly in parks, sports elds, picnic grounds, amphitheaters or golf course tees, fairways, roughs, surrounds and greens.

(lll)

(mmm) “reference evapotranspiration” or “ E To” means a standard

“recycled water,” “reclaimed water,” or “treated sewage euent water”

means treated or recycled waste water of a quality suitable for nonpotable uses such as landscape irrigation and water features. This water is not intended for human consumption.

measurement of environmental parameters which aect the water use of plants. ETo is expressed in inches per day, month, or year as represented in Appendix A , and is an estimate of the evapotranspiration of a large eld 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 so that regional dierences in climate can be accommodated.

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(kkk) Recreational Area

§ 491 Denitions

(nnn) “Regional Water Ecient Landscape Ordinance” means a

local Ordinance adopted by two or more local agencies, water suppliers and other stakeholders for implementing a consistent set of landscape provisions throughout a geographical region. Regional ordinances are strongly encouraged to provide a consistent framework for the landscape industry and applicants to adhere to.

(ooo) “rehabilitated landscape” means any relandscaping project that

requires a permit, plan check, or design review, meets the requirements of Section 490.1, and the modied landscape area is equal to or greater than 2,500 square feet.

(ppp) “residential landscape” means landscapes surrounding single or

multi-family homes.

(qqq) “run o” means water which is not absorbed by the soil or landscape

to which it is applied and ows from the landscape area. For example, run o may result from water that is applied at too great a rate (application rate exceeds inltration rate) or when there is a slope.

(rrr) “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.

(sss) “soil texture” means the classication of soil based on its percentage

of sand, silt, and clay.

QUICK INFO:

(nnn) “Regional Water Ecient Landscape Ordinance”

local jurisdiction, who may have a stricter local ordinance.

PRODUCT TIP:

(rrr) SOIL MOISTURE SENSOR

SMRT-Y Soil Moisture Sensor Kit turns any

controller into a smart controller.

QUICK INFO:

(ttt) SPECIAL LANDSCAPE AREA (SLA)

means an area of the landscape dedicated solely to edible plants, recreational areas, areas irrigated with recycled water, or water features using recycled water. Note denition

(kkk) Recreational Area for additional details.

PRODUCT TIP:

(yyy) SUBMETER

Landscape Water Meters are the only irrigation

submeters available through traditional irrigation distribution channels.

Check with your

Rain Bird’s FMD Series

(ttt) “Special Landscape Area” (SLA) means an area of the landscape

dedicated solely to edible plants, recreational areas, areas irrigated with recycled water, or water features using recycled water.

(uuu) “sprinkler head” or “spray head” means a device which delivers

water through a nozzle.

(vvv) “static water pressure” means the pipeline or municipal water supply

pressure when water is not owing.

(www)

(xxx) “swing joint” means an irrigation component that provides a exible,

(yyy) “submeter” means a metering device to measure water applied to the

(zzz) “turf” means a ground cover surface of mowed grass. Annual

season grasses.

“station” means an area served by one valve or by a set of valves that operate simultaneously.

leak-free connection between the emission device and lateral pipeline to allow movement in any direction and to prevent equipment damage.

landscape that is installed after the primary utility water meter.

bluegrass, Kentucky bluegrass, Perennial ryegrass, Red fescue, and Tall fescue are cool-season grasses. Bermudagrass, Kikuyugrass, Seashore Paspalum, St. Augustinegrass, Zoysiagrass, and Bualo grass are warm-

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§ 491 Denitions

(aaaa)

“valve” means a device used to control the ow of water in the

irrigation system.

(bbbb)

“water conserving plant species” means a plant species identied as

having a very low or low plant factor.

(cccc)

“water feature” means a design element where open water performs

an aesthetic or recreational function. Water features include ponds, lakes, waterfalls, fountains, articial streams, spas, and swimming pools (where water is articially supplied). The surface area of water features is included in the high water use hydrozone of the landscape area. Constructed wetlands used for on-site wastewater treatment or stormwater 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.

(dddd)

(eeee)

“watering window” means the time of day irrigation is allowed.

“WUCOLS” means the Water Use Classication of Landscape Species

published by the University of California Cooperative Extension and the Department of Water Resources 2014.

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§ 495 Reporting

(a) Local agencies shall report on implementation and enforcement by

December 31, 2015. Local agencies responsible for administering individual ordinances shall report on their updated ordinance, while those agencies developing a regional ordinance shall report on their existing ordinance. Those agencies crafting a regional ordinances shall also report on their new ordinance by March 1, 2016. Subsequently, reporting for all agencies will be due by January 31st of each year. Reports shall be submitted to the Department of Water Resources.

(b) Local agencies are to address the following:

(1) State whether you are adopting a single agency ordinance or a

regional agency alliance ordinance, and the date of adoption or anticipated date of adoption.

(2) Dene the reporting period. The reporting period shall commence

on December 1, 2015 and the end on December 28, 2015. For local agencies crafting regional ordinances with other agencies, there shall be an additional reporting period commencing on February 1, 2016 and ending on February 28, 2016. In subsequent years, all local agency reporting will be for the calendar year.

(3) State if using a locally modied Water Ecient Landscape Ordinance

(WELO) or the MWELO. If using a locally modied MWELO, how is it dierent than MWELO, is it at least as ecient as MWELO, and are there any exemptions specied?

QUICK INFO:

(495) REPORTING

to the DWR.

QUICK INFO:

3) LOCAL WATER EFFICIENT LANDSCAPE ORDINANCE (WELO)

water district to see if there is a stricter local or regional WELO in place. A list of local water ecient landscape ordinances can be found:

• Index of Ordinances By City

• Index of Ordinance By County

Local agencies must report

Check with your local

(4) State the entity responsible for implementing the ordinance.

(5) State number and types of projects subject to the ordinance during

the specied reporting period.

(6) State the total area (in square feet or acres) subject to the ordinance

over the reporting period, if available.

(7) Provide the number of new housing starts, new commercial projects,

and landscape retrots during the reporting period.

(8) Describe the procedure for review of projects subject to the ordinance.

(9) Describe actions taken to verify compliance. Is a plan check

performed; if so, by what entity? Is a site inspection performed; if so, by what entity? Is a post installation audit required; if so, by whom?

(10)

Describe enforcement measures.

(11)

Explain challenges to implementing and enforcing the ordinance.

(12)

Describe educational and other needs to properly apply the ordinance.

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The Intelligent Use of Water.

LEADERSHIP • EDUCATION • PARTNERSHIPS • PRODUCTS

™

At Rain Bird, we believe it is our responsibility to develop products and technologies that use water eciently. Our commitment also extends to education, training and services for our industry and our communities.

The need to conserve water has never been greater. We want to do even more, and with your help, we can. Visit www.rainbird.com for more information about The Intelligent Use of Water.™

Rain Bird Corporation

970 W. Sierra Madre Azusa, CA 91702 Phone: (626) 812-3400 Fax: (626) 812-3411

Rain Bird Technical Services

(800) RAINBIRD (U.S. and Canada)

Rain Bird Corporation

6991 East Southpoint Road Tucson, AZ 85756 Phone: (520) 741-6100 Fax: (520) 741-6522

Rain Bird International, Inc.

1000 W. Sierra Madre Azusa, CA 91702 Phone: (626) 963-9311 Fax: (626) 963-4287

Rain Bird MWELO 2015 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

§ 492.7 Irrigation Design Plan

§ 492.10 Irrigation Scheduling

§ 492.5 Soil Management Report

§ 492.6 Landscape Design Plan

§ 492.8 Grading Design Plan

§ 492.14 Recycled Water

§ 492.15 Graywater Systems

§ 492.16 Stormwater Management and Rainwater Retention

§ 492.17 Public Education

§ 492.18 Environmental Review

§ 492.1 Compliance with Landscape Documentation Package

§ 492.2 Penalties

§ 492.3 Elements of the Landscape Documentation Package

§ 490 Purpose

§ 490.1 Applicability

§ 495 Reporting