HomeMy WebLinkAboutOrdinances_2724_CCv0001.pdf ORDINANCE NO, 2724
AN ORDINANCE OF THE CITY OF REI LANDS ADDING CHAPTER 15.54
TO THE REDLANDS MUNICIPAL CODE TO ESTABLISH WATER
EFFICIENT LANDSCAPE REQUIREMENTS
THE CITE COUNCIL OF THE CITY OF RE LANI S DOES ORDAIN A
FOLLOWS
Section I_ Chapter 15.54, entitled "Water Efficient Landscape Requirements," is
hereby added to the Redlands Municipal Code to read as follows:.
"CHAPTER 15.54
WATER EFFICIENT LANDSCAPE REQUIREMENTS
15.54,01 tl pose. The City Council of the City of Redlands finds:
A. That it is the policy of the city to promote the conservation and efficient use of
water and to prevent the waste of this valuable resource,
B. That Section 2 of Article X of the California Constitution specifies that the right to
use water is limited to the amount reasonably required for the beneficial use to be served and the
right does not and small not extend to waste or unreasonable method of use.
C. Consistent with these findings, the purpose of this Chapter is to:
1`. Promote the values and benefits of landscapes while recognizing the need to
use water and other resources as efficiently as possible,
. Establish a structure for planning, designing, installing, maintaining and
managing water efficient landscapes in new construction and rehabilitated
projects;
3� Establish previsions for water management practices and wafer waste
prevention for existing landscapes;
4. Use grater efficiently without waste by setting <a Maximum Applied Water
Allowance as an upper limit for water use and reduce wateruse to the lowest
practical amount;
15.54.132AvaligghfliM
A. This Chapter shall apply to all of the following landscape projects:
1. New construction and rehabilitated landscapes for private development
projects with a landscape area equal to or greater than. 2,500 square feet
requiring a building or landscape permit, plan check or design review;
2. New construction and rehabilitated landscapes which are developer-installed
in single-family and multi-family projects with a landscape area equal to or
greater than 2,500 square feet requiring a building or landscape pen-nit, plan
check, or design review;
3.; New construction landscapes which are homeowner-provided andf'or
homeowner-hired in single-family and multi-family residential projects with a
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total project landscape area equal to or greater than 5,000 square feet requiring
a building or landscape permit, plan check or design review;
4. Cemeteries. Recognizing the special landscape management needs of
cemeteries, new and rehabilitated cemeteries are limited to Sections 15.54.060,
15.54.1 20 and 15.54.130.
B. This Chapter does not apply to:
1. Registered local, state or federal historical sites;
2. Ecological restoration projects that do not require a permanent irrigation
system;
3. Mined-land reclamation projects that do not require a permanent irrigation
system; or
4. Plant collections, as part of botanical gardens and arboretums open to the
public.
15.54.030 Definitions. The terms used in this Chapter shall have the meanings set forth
below:
A. "Applied water" means the portion of water supplied by the irrigation system to
the landscape.
B. "Automatic irrigation controller" means an automatic timing device used to
remotely control valves that operate an irrigation system. Automatic irrigation
controllers schedule irrigation events using either evapotranspiration (weather-
based)or soil moisture data.
C. "Backflow prevention device" means a safety device used to prevent pollution or
contamination of the water supply due to the reverse flow of water from the
irrigation system.
D. "Record of Completion"means the document required under Section 15.54.100
E. "Certified irrigation designer" means a person certified to design irrigation
systems by an accredited academic institution a professional trade organization or
other program such as the US Environmental Protection Agency's WaterSense
irrigation designer certification program and Irrigation Association's Certified
Irrigation Designer program.
F. "Certified landscape irrigation auditor" means a person certified to perform
landscape irrigation audits by an accredited academic institution, a professional
trade organization or other program such as the US Environmental Protection
Agency's WaterSense irrigation auditor certification program and Irrigation
Association's Certified Landscape Irrigation Auditor program,
G. "Check valve" or"anti-drain valve" means a valve located under a sprinkler head,
or other location in the irrigation system, to hold water in the system to prevent
drainage from sprinkler heads when the sprinkler is off.
H. "Common interest developments" means community apartment projects,
condominium projects, planned developments, and stock cooperatives per Civil
Code Section 13 51:
1. "Conversion factor (0,62)" means the number that converts acre-Inches per acre
per year to gallons per square foot per year
J. "Drip irrigation"' means any non-spray low volume irrigation system utilizing
emission devices with a (low rate measured in gallons per hour. Low volume
irrigation systems are specifically designed to apply small volumes of water
slowly at or near the root zone of plants.
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K. "Ecological restoration project" means a project where the site is intentionally
altered to establish a defined, indigenous, historic ecosystem.
L. "Effective precipitation" or "usable rainfall" (Eppt) means the portion of total
precipitation which becomes available for plant growth.
M. "Emitter" means a drip irrigation emission device that delivers water slowly from
the system to the soil.
N. "Established landscape" means the point at which plants in the landscape have
developed significant root growth into the soil. Typically, most plants are
established after one or two years of growth.
0. "Establishment period of the plants" means the first year after installing the plant
in the landscape or the first two years if irrigation will be terminated after
establishment. Typically, most plants are established after one or two years of
growth.
P. "Estimated Total Water Use" (ETWU) means the total water used for the
landscape as described in Section 15,54.060.
Q "ET adjustment factor" (ETAF) means a factor of 0.7, that, when applied to
reference evapotranspiration, adjusts for plant factors and irrigation efficiency,
two major influences upon the amount of water that needs to be applied to the
landscape. A combined plant mix with a site-wide average of 0.5 is the basis of
the plant factor portion of this calculation. For purposes of the ETAF, the average
irrigation efficiency is 0.71. Therefore, the ET Adjustment Factor is
(0.7)=(0.5/0.71). ETAF for a Special Landscape Area shall not exceed 1.0. ETAF
for existing non-rehabilitated landscapes is 0.8.
R "Evapotranspiration rate" means the quantity of water evaporated from adjacent
soil and other surfaces and transpired by plants during a specified time.
S. "Flow rate" means the rate at which water flows through pipes, valves and
emission devices, measured in gallons per minute, gallons per hour, or cubic feet
per second.
T. "Hardscapes"means any durable material (pervious and non-pervious).
U. "Homeowner-provided landscaping" means any landscaping either installed by a
private individual for a single family residence or installed by a licensed
contractor hired by a homeowner. A homeowner, for purposes of this ordinance,
is a person who occupies the dwelling he or she owns. This excludes speculative
homes, which are not owner-occupied dwellings.
V, "Hydro one" means a portion of the landscaped area having plants with similar
water needs. A hydro one may be irrigated or non-irrigated.
W. "Infiltration rate"' means the rate of water entry into the soil expressed as a depth
of water per unit of time (e.g., inches per hour).
X "Invasive plant species" means species of plants not historically found in
California that spread outside cultivated areas and can damage environmental or
economic resources. Invasive species may be regulated by county agricultural
agencies as noxious species. "Noxious weeds" means any weed designated by the
Weed Control Regulations in the Weed Control Act and identified on a Regional
District noxious weed control list. Lists of invasive plants are maintained at the
California Invasive Plant Inventory and USDA invasive and noxious weeds
database.
Y. "Irrigation audit" means an in-depth evaluation of the perfon-nance of an
irrigation system conducted by a Certified Landscape Irrigation Auditor. An
irrigation audit includes, but is not limited to: inspection, system tune-up, system
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test with distribution uniformity or emission uniformity, reporting overspray or
runoff`that causes overland flow, and preparation of an irrigation schedule.
Z. "Irrigation efficiency'" (IE), means the measurement of the amount of water
beneficially used divided by the amount of water applied. Irrigation efficiency is
derived from measurements and estimates of irrigation system characteristics and
management practices. The minimum average irrigation efficiency for purposes of
this ordinance is 0.71. Greater irrigation efficiency can be expected from well
designed and maintained systems.
AA. "Irrigation survey" means an evaluation of an irrigation system that is less
detailed than an irrigation audit. An irrigation survey includes, but is not limited
to: inspection, system test, and written recommendations to improve performance
of the irrigationsystem.
BB. `Irrigation water use analysis" means an analysis of water use data based on
teeter readings and billing data.
CC. "Landscape architect" means a person who holds a license to practice landscape
architecture in the state of California Business and Professions Code section
15.54.020.
D "Landscape arch"' 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).
LB. "Landscape contractor" means a person licensed by the state of California to
construct, maintain, repair, install, or subcontract the development of landscape
systems.
FF. `*Landscape Documentation Package" Means the documents required under
Section 15.54.050,
GG. "Landscape project" means total, area of landscape in a project as defined in
"landscape area" for the purposes of this ordinance, meeting requirements under
Section 15.54.020.
HH. "Lateral line"means the water delivery pipeline Haat supplies water to the emitters
or sprinklers from the valve.
H. "L=ocal water purveyor" means any entity, including a public agency, city, county;
or private water company that provides retail water service.
JJ.- -Low volume irrigation" means the application of irrigation water at low pressure
through a system of tubing or lateral lines and low-volume fitters such as drip;
drip lines, and bubblers. Low volume irrigation systems are specifically designed
to apply small volumes of water slowly at or rear the root zone of plants.
"Main line" means the pressurized pipeline that delivers water from the water
source to the valve or outlet.
LL. "Maximum Applied Water Allowance"( 'A) means the upper limit of annual
applied water for the established landscaped area as specified in Section
15.54,030. 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. dater Allowance. Special Landscape
Areas, including recreation areas; areas permanently and stalely dedicated to
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edible plants such as orchards and vegetable gardens, and areas irrigated with
recycled water are subject to the MAWA with an ETAS not to exceed 1.0.
MM. "Microctimate"means the climate of a small, specific area that may contrast with
the climate of the overall landscape area due to factors such as wind, sun
exposure, plant density, or proximity to reflective surfaces.
NN. "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;
00. "Mulch" means any organic material such as leaves, bark, straw, compost, or
inorganic mineral materials such as rocks, gravel, and decomposed granite left
loose and< applied to the soil surface for the beneficial purposes of reducing
evaporation, suppressing weeds, moderating soil temperature, and preventing soil
erosion.
PP. "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.
QQ "Operating pressure" means the pressure at which the parts of an irrigation system
are designed by the manufacturer to operate.
RR. "Overhead sprinkler irrigation systems" means systems that deliver water through
the air(e.g., spray heads and rotors).
SS. "Overspray" means the irrigation water which is delivered beyond the target area.
TT. "Permit" means an authorizing document issued by local agencies for new
construction or rehabilitated landscapes.
UU. "Pervious" means any surface or material that allows the passage of water through
the material and into the underlying soil.
VV. "Plant factor" or "plant water use factor is a factor , when multiplied by ETo,
estimates the amount of water needed by plants. For purposes of this ordinance,
the plant factor range for low water use plants is 0 to 0.3, the plant factor range
for moderate water use plants is 0.4 to 0.6, and the plant factor range for high
water use plants is 0.7 to L0. Plant factors cited in this Chapter are derived from
the Department of Water Resources 2000 publication "Water Use Classification
of Landscape Species ".
WW. "Precipitation rate"' means the rate of application of water measured in inches per
hour.
XX "Project applicant" means the individual or entity submitting a Landscape
Documentation Package required under Section 15.54.020, to request a permit,
plan check, or design review from the City. A project applicant may be the
property owner or his or her designee.
YY, "Rain sensor" or "rain sensing shutoff device" means a component which
automatically suspends an irrigation event when it rains.
ZZ. "Record drawing" or "as-builts" means a set of reproducible drawings which
-show significant changes in the work made during construction and which are
usually based on drawings marked up in the field and other data furnished by the
contractor.
AAA. "Recreational area" ineans areas dedicated to active play such as parks, sports
fields, and golf courses where turf provides a playing surface.
BBB. "Recycled water," "reclaimed water," or "treated sewage effluent water" means
treated or recycled waste water of a quality suitable for non-potable uses such as
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landscape irrigation and water features. This water is not intended for human
consumption.
CCC. "Reference evapotranspiration" or "ETo" means a standard measurement of
environmental parameters which affect the water use of plants. ETo is expressed
in inches per day, month, or year and is an estimate of the evapotranspiration of a
large field of four- to seven-inch tall, cool-season grass that is well watered.
Reference evapotranspiration is used as the basis of determining the Maximum
Applied Water Allowance so that regional differences in climate can be
accommodated,
DDD, "Rehabilitated landscape" means any re-landscaping project that requires a
permit, plan check, or design review, meets the requirements of Section 490,1,
and the modified landscape area is equal to or greater than 2,500 square feet, is
50% of the total landscape area, and the modifications are completed within one
year.
EEE. "Runoff' means water which is not absorbed by the soil or landscape to which it
is applied and flows from the landscape area. For example, runoffmay result from
water that is applied at too great a rate (application rate exceeds infiltration rate)
or when there is a slope,
FFF. "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.
GGG. "Soil texture" means the classification of soil based on its percentage of sand, silt,
and clay.
IIHM "Special Landscape Area" (SLA) means an area of the landscape dedicated solely
to edible plants, areas irrigated with recycled water, water features using recycled
water and<areas dedicated to active play such as parks, sports fields, golf courses,
and where turf provides a playing surface.
111. "Sprinkler head"means a device which delivers water through a nozzle.
JJ . "Static water pressure" means the pipeline or municipal water supply pressure
when water is not flowing.
KKK. "Station" means an area served by one valve or by a set of valves that operate
simultaneously.
LLL. "Swing joint" means an irrigation component that provides a flexible, leak-free
connection between the emission device and lateral pipeline to allow movement
in any direction and to prevent equipment damage.
NIMM."Turf" means a ground cover surface of mowed grass. Annual bluegrass,
Kentucky bluegrass, Perennial ryegrass, Red fescue, and Tall fescue are cool-
season grasses. Bermudagrass, Kikuyugrass, Seashore Paspalum, St.
Augustinegrass, Zoysiagrass, and Buffalo grass are warm-season grasses,
NNN. "Valve" means a device used to control the flow of water in the irrigation system.
000. "Water conserving plant species"means a plant species identified as having a low
plant factor.
PPP. "Water feature" means a design element where open water performs an aesthetic
or recreational function. Water features include ponds, lakes, waterfalls,
fountains, artificial streams, spas, and swimming pools (where water is artificially
supplied). The surface area of water features is included in the high water use
hydrozone of the landscape area. Constructed wetlands used for on-site
wastewater treatment or stormwater best management practices that are not
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irrigated and used solely for water treatment or stormwater retention are not water
features and, there-fore, are not subject to the water budget calculation.
QQQ "Watering window" means the time of day irrigation is allowed,
RRR. "WUCOLS"' means the Water Use Classification of Landscape Species published
by the University of California Cooperative Extension, the Department of Water
Resources and the Bureau of Reclamation, 2000.
15.54.040 Compliance with Landscape Documentation Packgge.
A. Prior to construction of landscape projects described in Section 15.54.020, the
project applicant shall s submit a Landscape Documentation Package.
B. Upon approval of the Landscape Documentation Package by the City, the project
applicant shall:
1. Receive a pen-nit or approval of the plan check or design review and record
the date of the permit on the Record of Completion;
2. Submit a copy of the approved Landscape Documentation Package along with
the record drawings, and any other information to the property owner or
his/her designee; and
3. Submit a copy of the Water Efficient Landscape Worksheet to the City's
Municipal Utilities and Engineering Department.
15.54.050 Elements of the Landscape ,Documentation Package. The Landscape
Documentation Package shall include the following elements:
A. Projection information
1. Date
2. Applicant name
3. Project address (if available, parcel and/or lot number(s))
4. Total landscape area(square feet)
5. Project type(e.g., new, rehabilitated, public, private, cemetery, homeowner-
installed)
6. Water supply type(e.g., potable, recycled, well)
7. Checklist of all documents in Landscape Documentation Package
8. Project contacts to include contact information for the project applicant and
property owner
9. Applicant signature and date with statement, "I agree to comply with the
requirements of the City's Water Efficient Landscape Ordinance and submit a
complete Landscape Documentation Package."
B. Water Efficient Landscape Worksheet,
1. Hydro one information table
2. Water budget calculations
a. Maximum Applied Water Allowance(MAW
b. Estimated Total Water Use(ETWU)
C. Soil management report;
D. Landscape design plan;
E. Irrigation design plan; and
F Grading design plan.
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15.54.60 'Water Efficient Landsca e Worksheet.
project; applicant shall complete the Water Efficient Landscape Worksheet
which contains two sections.
1. A hydroone information table for the landscape project; and
2. A water budget calculation for the landscape project.
B. Water budget calculations shall adhere to the following requirements:
1; The plant factor used shall be from WUCOLS. The plant factor ranges from
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 hydroone and
temporarily irrigated areas shall be included in the low water use hydro one.
All Special Landscape Areas shall be identified and their water use calculated
as described below.
4. ETAF for Special Landscape Areas shall not exceed 1.0.
C. Maximum Applied Water Allowance
The Maximum Applied Water Allowance shall be calculated using the equation:
MAWA=(E`l'o) 1 .6 [(0.7 x LA)+ (0.3 x SLA)]
15.5 .70 Soil Management Report. In order to reduce runoff and encourage healthy plant
growth, a soil management report shall be completed, as follows:
A. Submit soil samples to a laboratory for analysis and recommendations.
1. Soil sampling shall be conducted in accordance with laboratory protocol,
including protocols regarding adequate sampling depth for the intended plants.
2. The soil analysis may include:
a. Soil texture,
b. Infiltration rate determined by laboratory test or soil texture infiltration
rate table,
c. pH;
d Total soluble salts;
e. Sodium;
f: Percent organic matter; and
ga Recommendations.
B. The applicant shall comply with one of the following:
1. if significant mass ;grading is not planned, the soil analysis report shall be
submitted to the City as part of the Landscape Documentation Package; or
. If significant mass grading is planned, the soil analysis report shall be
submitted to city as part of the Record of Completion
C. The soil analysis report shall be made available, to the professionals preparing the
landscape design plans and irrigation design plans to make any necessary
adjustments to the design plans.;
Dl The applicant shall submit documentation verifying i pleanentation of soil
analysis report recommendations to the City with Record of Completion.
15.54.80 Landsc.a e Desian Plan.
A. For the efficient use of water, a landscape shall be carefully designed and planned
for the intended function of the project. A landscape design plan meeting the
following design criteria shall be submitted as part of the Landscape
Documentation Package.
1. Plant Material
a. Any plant may be selected for the landscape, providing the Estimated
Total Water Use in the landscape area does not exceed the Maximum
Applied Water Allowance. To encourage the efficient use of water, the
following is highly recommended:
b. Protection and preservation of native species and natural vegetation;
c. Selection of water-conserving plant and turf species;
d. Selection of plants based on disease and pest resistance;
e. Selection of trees based on the city tree pallet or tree shading guidelines.
2. Each hydrozone shall have plant materials with similar water use, with the
exception of hydrozones with plants of mixed water use, as specified in
Section 15.54.090.
3. Plants shall be selected and planted appropriately based upon their
adaptability to the climatic, geologic, and topographical conditions of the
project site. To encourage the efficient use of water, the following is highly
recommended:
4. Use the Sunset Western Climate Zone System which takes into account
temperature, humidity, elevation, terrain, latitude, and varying degrees of
continental and marine influence on local climate;
5. Recognize the horticultural attributes of plants (ie., mature plant size,
invasive surface roots) to minimize damage to property or infrastructure [e.g.,
buildings, sidewalks, power lines]; and
6. Consider the solar orientation for plant placement to maximize summer shade
and winter solar gain.
T 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 I foot of vertical
elevation change for every 4 feet of horizontal length (rise divided by run x
100=slope percent).
8. A landscape design plan for projects in fire-prone areas shall address fire
safety and prevention. A defensible space or zone around a building or
structure is required per Public Resources Code Section 4291(a) and (b).
Avoid tire-prone plant materials and highly flammable mulches.
9. The use of invasive and/or noxious plant species is strongly discouraged.
10. The architectural guidelines of a common interest development, which include
community apartment projects, condominiums, planned developments, and
stock cooperatives, shall not prohibit or include conditions that have the effect
of prohibiting the use of low-water use plants as a group.
B. Water Features
1. Recirculating water systems shall be used for water features.
2. Where available, recycled water shall be used as a source for decorative water
features,
3. Surface area of a water feature shall be included in the high water use
hydrozone area of the water budget calculation.
4. Pool and spa covers are highly recommended.
C. Mulch and Amendments
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1. A minimum two inch IT') 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.
2. Stabilizing mulching products shall be used on slopes.
1 The mulching portion of the seed/mulch slurry in hydro-seeded applications
shall meet the mulching requirement,
4. Soil amendments shall be incorporated according to recommendations of the
soil report and what is appropriate for the plants selected (see Section 492.3).
D. Landscape design plan, at a minimum, shall:
1. Delineate and label each hydro one by number, letter, or other method;
2. Identify each hydrozone as low, moderate, high water, or mixed water use.
Temporarily irrigated areas of the landscape shall be included in the low water
use hydrozone for the water budget calculation;
3. Identify recreational areas;
4. Identify areas pennanently 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);
M Identify location and installation details of any applicable stormwater best
management practices that encourage on-site retention and infiltration of
stormwater. Stormwater best management practices are encouraged in the
landscape design plan an&examples; include,but are not limited to:
a. Infiltration beds, swales, and basins that allow water to collect and soak
into the ground;
b. Constructed wetlands and retention ponds that retain water, handle excess
flow, and filter pollutants; and
c. Pervious or porous surfaces (e.g., permeable pavers or blocks, pervious or
porous oncrete, etc.) that minimize runoff.
11. Identify any applicable rain harvesting or catchment technologies (e.g., rain
gardens, cisterns, etc.);
12. Contain the following statement: "I have complied with the criteria of Chapter
15 of the Redlands Municipal Code and applied them for the efficient use of
water in the landscape design plan"; and
13. Bear the signature of a licensed landscape architect, licensed landscape
contractor, or any other person authorized to design a landscape. (See Sections
5500.1, 5615, 5641, 5641.,1, 5641.2, 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.)
15.54.090 Irriaration Design Plan.
A, For the efficient use of water, an irrigation system shall meet all the requirements
listed in this section and the manufacturers' recommendations. The irrigation
system and its related components shall be planned and designed to allow for
proper installation, management, and maintenance. An irrigation design plan
to
meeting the following design criteria shall be submitted as part of the Landscape
Documentation Package.
1. System
a. Dedicated landscape water meters are highly recommended on landscape
areas smaller than 5,000 square feet to facilitate water management.
b. Automatic irrigation controllers utilizing either evapotranspiration or soil
moisture sensor data shall be required for irrigation scheduling in all
irrigation systems.
c. The irrigation system shall be designed to ensure that the dynamic
pressure at each emission device is within the manufacturer's
recommended pressure range for optimal performance.
i. 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.
ii. Static water pressure, dynamic or operating pressure and flow
reading of the water supply shall be measured at the point of
connection. These pressure and flow measurements shall be
conducted at the design stage. If the measurements are not
available at the design stage, the measurements shall be conducted
at installation.
d. Sensors (rain, freeze, wind, etc.), either integral or auxiliary, that suspend
or alter irrigation operation during unfavorable weather conditions shall be
required on all irrigation systems, as appropriate for local climatic
conditions. Irrigation should be avoided during windy or freezing weather
or during rain.
e. Manual shut-off valves (such as a gate valve,ball valve, or butterfly valve)
shall be required, as close as possible to the point of connection of the
water supply, to minimize water loss in case of an emergency (such as a
main line break) or routine repair.
f. High flow sensors that detect and report high flow conditions created by
system damage or malfunction are recommended.
g. The irrigation system shall be designed to prevent runoff, low head
drainage, overspray, or other similar conditions where irrigation water
flows onto non-targeted areas, such as adjacent property, non-irrigated
areas, hardscapes, roadways, or structures,
h. Relevant information from the soil management plan, such as soil type and
infiltration rate, shall be utilized when designing irrigation systems,
is The design of the irrigation system shall conform to the hydrozones of the
landscape design plan.
j. The irrigation system must be designed and installed to meet, at a
minimum, the irrigation efficiency criteria as described in Section
15.54.030 regarding the Maximum Applied Water Allowance,
L It is highly recommended that the project applicant or local agency inquire
with the local water purveyor about peak water operating demands on the
water supply system) or water restrictions that may impact the
etTectiveness of the irrigation system.
II
1. In mulched planting areas, the use of low volume irrigation is required to
maximize water infiltration into the root zone.
m. Sprinkler heads and other emission devices shall have matched
precipitation rates, unless otherwise directed by the manufacturer's
recommendations.
n. Head to head coverage is recommended- However, sprinkler spacing shall
be designed to achieve the highest possible distribution uniformity using
the manufacturer's recommendations.
o. Suring joints or other riser-protection components are required on all risers
subject to damage that are adjacent to high traffic areas.
p. Check valves or anti-drain valves are required for all irrigation systems.
q. Narrow or irregularly shaped areas, including turf, less than eight (8) feet
in width in any direction shall be irrigated with subsurface irrigation or
low volume irrigation system.
r. Overhead irrigation shall not be permitted within 24 inches of any non-
permeable surface. Allowable irrigation within the setback from non-
permeable surfaces may include drip, drip line, or other low flow non
spray technology. The setback area may be planted or implanted. The
surfacing of the setback may be mulch, gravel, or other porous material.
These restrictions may be modified if.
i. The landscape area is adjacent to permeable surfacing and no
runoff occurs; or
ii. The adjacent non-permeable surfaces are designed and constructed
to drain entirely to landscaping; or
iii. The irrigation designer specifies an alternative design or
technology, as part of the Landscape Documentation Package and
clearly demonstrates strict adherence to irrigation system design
criteria in Section 15,54.090 (a)(1)(G). Prevention of overspray
and runoff must be confirmed during the irrigation audit.
s. Slopes greater than 25% shall not be irrigated with an irrigation system
with a precipitation rate exceeding 0.75 inches per hour. This restriction
may be modified if the landscape designer specifies an alternative design
or technology, as part of the Landscape Documentation Package, and
clearly demonstrates no runoff or erosion will occur. Prevention of runoff
and erosion must be confirmed during the irrigation audit.
2. Hydrozone
a. Each valve shall irrigate a hydrozone with similar site, slope, sun
exposure, soil conditions, and plant materials with similar water use.
b. Sprinkler beads and other emission devices shall be selected based on
what is appropriate for the plant type within that hydrozone.
c. Where feasible, trees shall be placed on separate valves from shrubs,
groundcovers, and turf
d. Individual hydrazones that mix plants of moderate and low water use, or
moderate and high water use, may be allowed if
i. Plant factor calculation is based on the proportions of the
respective plant water uses and their plant factor; or
ii. The plant factor of the higher water using plant is used for
calculations.
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e. Individual hydrozones that mix high and low water use plants shall not be
permitted,
f, On the landscape design plan and irrigation design plan, hydrozone areas
shall be designated by number, letter, or other designation. On the
irrigation design plan, designate the areas irrigated by each valve, and
assign a number to each valve. Use this valve number in the Hydrozone
Information Table (see Appendix B Section A). This table can also assist
with the irrigation audit and programming the controller.
B. The irrigation design plan, at a minimum, shall contain:
1. Location and size of separate water meters for landscape;
2. Location, type and size of all components of the irrigation system, including
controllers, main and lateral lines, valves, sprinkler heads, moisture sensing
devices, rain switches, quick couplers, pressure regulators, and backflow
prevention devices;
3. Static water pressure at the point of connection to the public water supply;
4. Flow rate (gallons per minute), application rate (inches per hour), and design
operating pressure(pressure per square inch)for each station;
5. Recycled water irrigation systems as specified in Section 15.54.150;
6. The following statement: "I have complied with the criteria of Chapter — of
the Redlands Municipal Code and applied them accordingly for the efficient
use of water in the irrigation design plan"; and
7. The signature of a licensed landscape architect, certified irrigation designer,
licensed landscape contractor, or any other person authorized to design an
irrigation system. (See Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3,
5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business and Professions Code,
Section 832,27 of Title 16 of the California Code of Regulations, and Section
6721 of the Food and Agricultural Code.)
15.54.100 Record of Completion.
A. The Record of Completion shall include the following elements:
I. Project information;sheet that contains:
a. Date;
b. Project name,
c. Project applicant name, telephone, and mailing address;
d. Project address and location; and
e. Property owner name, telephone, and mailing address;
2. Certification by either the signer of the landscape design plan, the signer of
the irrigation design plan, or the licensed landscape contractor that the
landscape project has been installed per the approved Landscape
Documentation Package;
a, Where there have been significant changes made in the field during
construction, these"as-built"or record drawings shall be included with
the certification;
3. Irrigation scheduling parameters used to set the controller (see Section
15.54.110);
4. Landscape and irrigation maintenance schedule (see Section 1.554.120);
5. Irrigation audit report(see Section 15.54,130); and
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6. Soil analysis report, if not submitted with Landscape Documentation Package,
and documentation verifying implementation of soil report recommendations
(see Section 15.54.070).
B. The project applicant shall:
1. Submit the signed Record of Completion to the City for review;
1 Ensure that copies of the approved Record of Completion are submitted to the
City and property owner or his or her designee.
15.54,110 Irrigation SchOulin
A. For the efficient use of water, all irrigation schedules shall be developed,
managed, and evaluated to utilize the minimum amount of water required to
maintain plant health. Irrigation schedules shall meet the following criteria:
1. Irrigation scheduling shall be regulated by automatic irrigation controllers.
2. Overhead irrigation shall be scheduled between 8:00 p.m. and 10:00 am.
unless weather conditions prevent it or if requested to reschedule by city.
Operation of the irrigation systern outside the normal watering window is
allowed for auditing and system maintenance.
3. For it of the irrigation schedule, particular attention must be
paid to irrigation run times, emission device, flow rate, and current reference
evapotranspiration, so that applied water meets the Estimated Total Water
Use. Total annual applied water shall be less than or equal to Maximum
Applied Water Allowance. Actual irrigation schedules shall be regulated by
automatic irrigation controllers using current reference evapotranspiration
data(e.g., CIMIS)or soil moisture sensor data.
4. Parameters used to set the automatic controller shall be developed and
submitted for each of the following:
a. The plant establishment period;
b. The established landscape; and
c. Temporarily irrigated areas.
5. Each irrigation schedule shall consider for each station all of the following
that apply:
a. Irrigation interval (days between irrigation);
b. Irrigation run times (hours or minutes per irrigation event to avoid
runoff);
c. Number of cycle starts required for each irrigation event to avoid
runotT;
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 efficiency setting.
15.54.1 20 Landscat)e and Irrigation Maintenance Schedule.
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A. Landscapes shall be maintained to ensure water use efficiency. A regular
maintenance schedule shall be submitted with the Record of"Completion.
B. A regular maintenance schedule shall include, but not be limited to, routine
inspection; adjustment and repair of the irrigation systema and its components;
aerating and dethatching tart areas; replenishing mulch; fertilizing, pruning;
weeding in all landscape areas, and removing and obstruction to emission devices
Operation of the irrigation system outside the no al watering window is allowed
for auditing and system maintenance.
C. Repair of all irrigation equipment shall be done with: the originally installed'
components or their equivalents.
D. Applicant is encouraged to implement sustainable or environmentally-friendly
practices for overall landscape maintenance.
15.54,1 fl Irrigation. Audit Irrigation Su _ey,and lrri ation terr Use A al sis. All
landscape irrigation audits shall be conducted by a certified landscape irrigation auditor. For
new construction: and: rehabilitated: landscape projects installed after January 1, 2010, as
described in 15.54.020, the project applicant shall subunit an irrigation audit report with the
Record of Completion to the city that may include, but is not limited to: inspection, system tune-
up, system test with distribution uniformity, reporting overspray or run ort'that causes overland
flow,and preparation of an irrigation schedule
15.54,1413 Ujggion J fficienc . For the purpose of determining Maximum Applied
Water Allowance, average irrigation efficiency is assumed to be 0.71, Irrigation systems shall b
designed, maintained, and managed to meet or exceed an average landscape irrigation efficiency
of 0,7 1.
15,54,150 Recycled WaterK
A The installation of recycled waterirrigation systems shall allow for the current
and future use of recycled water, unless a written exemption has been granted as
describedin this section.
B. Irrigation systems and decorative water features shall use recycled water unless a
written exemption has been granted by city or the local water purveyor stating
that recycled water meeting all public health codes and standards is not available
and will not be available for the foreseeable future.
C All recycled water irrigation systems shall be designed and operated in
accordance with all applicable local and state laws..
D, Landscapes using recycled grater are considered Special Landscape Areas. The
ET Adjustment Factor for Special Landscape Areas shall not exceed 1.0.
15t54,160` Sto water l iariag end
A Stormwater management practices minimize runoff` and increase infiltration
which recharges groundwater and improves water quality. Implementing
storrnwater hest management practices into the landscape and trading design
plans to minimize runoff and to increase on-site retention and infiltration are
encouraged.
,15,
B. Project applicants shall refer to the City or Regional Water Quality Control Board
for information on any applicable stormwater ordinances and stormwater
management plans.
C. Rain gardens, cisterns, and other landscapes features and practices that increase
rainwater capture and create opportunities for infiltration and/or onsite storage are
recommended.
15.54.170 Evapotranspiration Table. The following table, designated as Appendix A to this
Chapter, should be used in implementing the provisions of this Chapter.
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Appendix A
Reference Evapotranspiration (ETo) Table.
Appendix A- Reference Evapotranspiration(ETo)Table*
Annual
County and City .tan Feb Mar Apr May ;Tease Jul Aug Sep Oct Nov Dec ETo
RIVERSIDE
Beaumont 2.0 2.3 3.4 4.4 6.1 7.1 7,6 7.9 6:11 19 2.6 1.7 55:11
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 12.3 113,1 &9 6.2 3.8 2,4 88.1
[desert Center 2.9 4.1 6.4 8.5 11.0 12.1 12.2 1 LI 9,61 6A 3.9 2.6 90O
Elsinore 2.1 2.8 3.9 4.4 5.9 7.1 7.6 7:13 5.8 3.9 2.6 1,9 55.0
India 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
Appendix A"-Reference
Evapotranspiration
(ETo)Table*
Annual
County and City Jan Feb Mar fpr May .turn Jul Aug Sep tact Nov Dee ETo
RIVERSIDE
La Quinta 2.4 18 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.t1 8.8 8.2 6.8 5,0 12 2,4 70.8
Oasis 2.9 3.3 5.3 6.1 8.5 8.9 8,7 7.9 6.9 4.8 2.9 23 68A
Palau 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 72 83 8,5 11.6 83 7.2 5.9 2.7 L771,1
Rancho California 1,8 12 3.4 4.8 5.6 6.3 6,5 6.2 4.8 3.7° 2.4 1.8 4995
Rancho Mirage 2.4 33 5.3 6.9 8,7 9.6 9.6 8.7 6.9 5A 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 91 8:5 6.8 52 3.1 2.3 71.7
Temecula East 11` 2.3 2.4 4.1 4.9 64 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 2A 718
Riverside UC 2.5 19 4.2 5.3 5:9 6.6 7.2 6.9 5.4 4.1 2.9 16 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
SAN BERNARDINO
Baker 2.7 3,9 6.1 8.3 10:4 11.8 112 11.11 8.9 6,1 3.3 2.1 86.6
Barstow NE 2 2 2.9 5;3 69 9.0 111.1 9.9 8.9 6.8 4.8 17 2.1 71.7
Big Bear Lake 1.8 2.6 4.6 6:t1 7,0 7.6 8.1 7.4 5.4 4,1 2.4 1.8 58,6
China 2.1 2.9 3,9 4.5 5.7 6.5' 7.3 7.1: 5.9 4,2 16 2.t1 54.6
Crestline 1.5 1.9 3.3 4.4 5.5 6,6 7.8 7.1 5A 3.5' 2.2 1.6 5018
Lake Arrowhead 1.8 16 4.6 6.31 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.O 11.4 9.9 7.4 5.4 3.0 1.8 75.3
Needles 3.2 4.2 6.6 8.9 11.31 12.4 12.8 11.0 8.9 6.6 4.0 2,7 92A
Newberry Springs 2.l 2.9 5:3 8.4 9.8 1119 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
Twenty-nine Palmi 2,6 16 59 7.9 10.1' 11.2 11,2 103 8.6 5,9 3.4 2,2 82.9`
Victorville 2,0 16 4.6 6.2 7.3 8.9 9.8 9,0 6,5 4.7 2.7 2.1 66,2"
17
* The values in this table are derived from:
1) California Irrigation Management Information System(CIMIS);
2) Reference Evapotranspiration Zones Map, UC Dept. of Land,Air& Water Resources and California Dept of
Water Resources 1999; and
3)Reference Evapotranspiration for California, University of California, Department of Agriculture and Natural
Resources(1987)Bulletin 1922,
4) Determining Daily Reference Evapotranspiration,Cooperative Extension UC Division of Agriculture and
Natural Resources(1987),Publication Leaflet 21426
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15.54.180 Water Budeet Calculation. The follow table, designated as Appendix B to
this Chapter, should be used in implementing the provisions of this Chapter.
Appendix B
Sample Water Efficient Landscape Worksheet.
WATER EFFICIENT LANDSCAPE WORKSHEET
This worksheet is rifted out by the project applicant and it is a required element of the Landscape Documentation Package,
Please complete all sections(A and 8)of the worksheet.
SECTION A. HYDRO ONE INFORMATION TABLE
Please complete the hydrozone table(s) for each hydrozone. Use as many tables as necessary to provide
the square footage of landscape area per hydrozone.
Hydrozone Zone or Irrigation Area %Of
Valve Method" (Sq,Ft.) Landag e Area
EE
Total 100%
.Hydrozone -irrigation Method
HW=High Water Use Plants MS=Mcro-spray,
MW=Moderate Water Use Plants S=spray
LIN=Low Water Use Plants R=Rotor
8=Bubbler
0=Drip,
0 z Other
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SECTION B. WATER BUDGET CALCULATIONS
Section 81. Maximum Aoplied Water Allowance(MAMEA)
The project's Maximum Applied Water Allowance shall be calculated using this equation:
MAWA= (ETo) (0.62) [(0.7 x LA) + (0.3 x SLA)]
where:
MAWA = Maximum Applied Water Allowance (gallons per year)
ETo = Reference Evapotranspiration from Appendix A(inches per year)
0.7 = ET Adjustment Factor(ETAS)
LA = Landscaped Area includes Special Landscape Area(square feet)
0.62 =Conversion factor(to gallons per square foot)
SLA =Portion of the landscape area identified as Special Landscape Area(square feet)
0.3 =the additional ET Adjustment Factor for Special Landscape Area(I.O-0.7= O.3)
Maximum Applied Water Allowance gallons per year
Show calculations.
Effective Precipitation (Egpjt
If considering Effective Precipitation, use 25% of annual precipitation. Use the following equation to
calculate Maximum Applied Water Allowance:
MAWA= (ETo—Eppt) (0,62) [(0.7 x LA) + (0,3 x SLA)]
Maximum Applied Water Allowance = gallons per year
Show calculations,
20
Section B2, Estimated Total Water Use(ETWU
The project's Estimated Total Water Use is calculated using the following formula-
FxH
ETWU=(M)(0.62�P IE A +SLA)
where';
TWU = Estimated total water use per year(gallons per year)
ETo = Reference Evapotranspiration (inches per year)
F = Plant Factor from WU OLS (see Definitions)
HA = Hydrozone Area(high, medium, and low water use areas) (square feet)
SLA =Special Landscape Area (square:feet)
OS =Conversion Factor(to gallons per square foot)
IE = Irrigation Efficiency(minimum 0.71)
Hydrozone Table for Calculating ETWU
Please complete the hydrozone table(s). Use as many tables as necessary,
! Plant ater
I plant Area (FIA) PF x HA
H dro�zone Use TY sl Factor, uaf %feett�� (�care feet
Sum I
w
E
L
Estimated Total Water Use gallons
Show calculations.
1
Section 2. Certification. The City Clerk shall certify to the adoption of this
ordinance and cause it, or a summary of it, to be published once in the Redlands Daily Facts, a
newspaper of general circulation printed and published in this City.
Mayor of the City of Redlands
ATTEST:
C;*ty,/Clerk
22
I, Lorrie Poyzer, City Clerk of the City of Redlands, hereby certify that the foregoing Ordinance
No.2724 was duly adopted by the City Council at a regular meeting thereof held on the I st day
of December, 2009, by the following vote:
AYES: Councilmembers Bean, Harrison, Gallagher, Aguilar; Mayor Gilbreath
NOES: None
ABSTAIN: None
ABSENTNone
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23