For the purposes of this chapter, the following definitions
shall apply:
"Applied water"
means the portion of water supplied by the irrigation system
to the landscape.
"Backflow prevention device"
means a safety device used to prevent pollution or contamination
of the city water supply due to the reverse flow of water from the
irrigation system.
"Check valve or anti-drain valve"
means a valve located under a sprinkler head or other location
in the irrigation system to hold water in the system to prevent drainage
from sprinkler heads when the system is off.
"Certified landscape irrigation auditor"
means a person certified to perform landscape irrigation
audits by an accredited academic institution, a professional trade
organization or other program such as the United States Environmental
Protection Agency WaterSense Irrigation Auditor Certification Program,
licensed landscape architect, and Irrigation Association Certified
Landscape Irrigation Auditor Program.
"Certified irrigation designer"
means a person certified to design irrigation systems by
an accredited academic institution, or a professional trade organization
or other program such as the United States Environmental Protection
Agency WaterSense Irrigation Designer Certification Program and Irrigation
Association Certified Irrigation Designer Program.
"Compost"
means the safe and stable product of controlled biologic
decomposition of organic materials that is beneficial to plant growth.
"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.
"Drip irrigation"
means any non-spray low volume irrigation system utilizing
emission devices with a flow rate measured in gallons per hour. Low
volume irrigation systems are specifically designed to apply small
volumes of water slowly at or near the root zone of plants.
"Emitter"
means a drip irrigation emission device that delivers water
slowly from the irrigation system to the soil.
"Environmental utilities department"
means the department within the City of Roseville that is
responsible for providing utility service with the city. The Roseville
water utility is a division within the department responsible for
providing retail water service.
"Established landscape"
means the point at which plants in the landscape have developed
significant roots growth to support themselves. Typically, most plants
are established after one or two years of growth.
"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.
Native habitat mitigation areas and trees may need three to five years
for establishment.
"Evapotranspiration (ET)"
means the loss of water to the atmosphere by the combined
processes of evaporation and transpiration.
"ET adjustment factor (ETAF)"
means a factor of 0.55 for residential areas and 0.45 for
nonresidential areas, 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.
The ETAF for new and existing (non-rehabilitated) special landscape
areas shall not exceed 1.0. The ETAF for existing, non-rehabilitated
landscaping is 0.8.
"Evapotranspiration (ET) rate"
means the quantity of water evaporated from adjacent soil
and other surfaces and transpired by plants during a specified time.
"Flow rate"
means the rate at which water flows through pipes, valves,
and emission devices, measured in gallons per minute, gallons per
hour, or cubic feet per second.
"Flow sensor"
means an inline device installed at the supply point of the
irrigation system that produces a repeatable signal proportional to
flow rate. Flow sensors must be connected to an automatic irrigation
controller, or flow monitor capable of receiving flow signals and
operating master valves. This combination flow sensor/controller may
also function as a landscape water meter or submeter.
"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.
"Fuel modification plan guideline"
means guidelines from a local fire authority to assist residents
and businesses that are developing land or building structures in
a fire hazard severity zone.
"Graywater"
means untreated wastewater that has not been contaminated
by any toilet discharge, has not been affected by infectious, contaminated,
or unhealthy bodily wastes, and does not present a threat from contamination
by 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.
"Hardscapes"
means any durable surface material (pervious and non-pervious).
"Homeowner-provided landscaping"
means landscaping either installed by a private individual
for a single-family residence or installed by a licensed contractor
hired by a homeowner.
"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.
"Infiltration rate"
means the rate of water entry into the soil expressed as
a depth of water per unit of time (i.e., inches per hour).
"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.
"Irrigation audit"
means an in-depth evaluation of the performance of an irrigation
system conducted by a certified landscape irrigation auditor. An irrigation
audit includes, but is not limited to: inspection, system tune-up,
system test with distribution uniformity or emission uniformity, reporting
overspray or run off that causes overland flow, and preparation of
an irrigation schedule. The audit must be conducted in a manner consistent
with the Irrigation Association's Landscape Irrigation Auditor Certification
Program or other U.S. Environmental Protection Agency "WaterSense"
labeled auditing program.
"Irrigation efficiency"
means the measurement of the amount of water beneficially
used divided by the amount of water applied. Irrigation efficiency
is derived from measurements and estimates of irrigation system characteristics
and management practices. The irrigation efficiency for purposes of
this chapter is 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.
"Landscaped area (LA)"
means all of 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 nondevelopment (e.g.,
open spaces and existing native vegetation).
"Landscape architect"
means a person who holds a license to practice landscape
architecture in the state of California (Business and Professions
Code Section 5615).
"Landscape contractor"
means a person licensed possessing a valid C-27 license by
the state of California to construct, maintain, repair, install, or
subcontract the development of landscape systems.
"Landscape project"
means the total area of landscape in a project as defined in "landscape area," for the purposes of this chapter, meeting the requirements under Section
14.18.030.
"Landscape water meter"
means an inline device installed at the irrigation supply
point that measures the flow of water into the irrigation system and
is connected to a totalizer to record water use.
"Lateral line"
means the water delivery pipeline that supplies water to
the emitters or sprinklers from the valve. This pipeline is typically
downstream of the zone control valve and non-pressurized when irrigation
is not occurring.
"Low volume irrigation"
means the application of irrigation water at low pressure
through a system of tubing or lateral lines and low-volume emitters
such as drip, drip lines, and bubblers. Low volume irrigation systems
are specifically designed to apply small volumes of water slowly at
or near the root zone of plants.
"Main line"
means the pressurized pipeline that delivers water from the
water source to the valve or outlet. This pipeline is typically pressurized
at all times.
"Master shut-off valve"
is an automatic valve installed at the irrigation supply
point which controls water flow 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.
"Maximum applied water allowance (MAWA)"
means the upper limit of annual applied water for the established
landscaped area as specified in Section 14.18.050(B)(2). MAWA is based
upon the area's reference evapotranspiration, the ET adjustment factor,
and the size of the landscaped 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)].
"Median"
is an area between opposing lanes of traffic that may be
unplanted or planted with trees, shrubs, perennials, and ornamental
grasses.
"Microclimate"
means the climate of a small, specific area that may contrast
with the climate of the overall landscape area due to factors such
as: wind, sun exposure, plant density or proximity to reflective surfaces.
"Mulch"
means any organic material such as leaves, bark, straw or
other 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.
"Nonresidential 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.
"Operating pressure"
means the pressure at which the parts of an irrigation system
are designed by the manufacturer to operate.
"Overspray"
means the irrigation water which is delivered beyond the
target area.
"Parkway"
means the area between a sidewalk and the curb or traffic
lane. It may be planted or unplanted, and with or without pedestrian
egress.
"Permit"
means any authorizing document issued by the City of Roseville
for new construction or rehabilitated landscaping.
"Pervious"
means any surface or material that allows the passage of
water through the material and into the underlying soil.
"Plant factor or plant water use factor"
means a factor, when multiplied by the ETo, estimates the
amount of water needed by plants. For purposes of this chapter, 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 chapter are derived from the publication "Water
Use Classification 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).
"Project applicant"
means the individual or entity submitting a landscape documentation package required under Section
14.18.050 to request a permit, plan check or design review from the city. A project applicant may be the property owner or designee.
"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.
"Recreational area"
means areas, excluding private single-family residential
areas, designated for active play, recreation or public assembly in
parks, sports fields, picnic grounds, amphitheaters or golf courses
tees, fairways, roughs, surrounds and greens.
"Reference evapotranspiration (ETo)"
means a standard measurement of environmental parameters
which affect the water use of plants. ETo is given in inches per day,
month, or year as represented below, and is an estimate of the evapotranspiration
of a large field of four- to seven-inch tall, cool season turf that
is well watered. Reference evapotranspiration is used as the basis
of determining the maximum applied water allowances so that regional
differences in climate can be accommodated. Refer to Section 14.18.050(B)(2)
for City of Roseville ETo.
"Rehabilitated landscaping"
means any re-landscaping project that requires a building permit, improvement plan approval, or design review and meets the requirements of Section
14.18.030.
"Runoff"
means water which is not absorbed by the soil or landscape
to which it is applied and flows from the landscape area. For example,
runoff may result from water that is applied at too great a rate or
too great a volume (application rate exceeds infiltration rate) or
when there is a slope.
"Slope"
means the steepness, incline, gradient, or grade of a straight
line. A higher slope value indicates a steeper incline.
"Soil texture"
means the classification of soil based on its percentage
of sand, silt, and clay in the soil.
"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.
"Station"
means an area served by one valve or by a set of valves that
operate simultaneously.
"Stormwater quality design manual"
means the most recent version of the design manual for the
Sacramento and South Placer regions which sets forth the design criteria
and operation and maintenance requirements for stormwater control
measures.
"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.
"Submeter"
means a metering device to measure water applied to the landscape
that is installed after the primary utility water meter.
"Temporarily irrigated areas"
means either: (1) landscaping which is reliant on irrigation
for a temporary duration of time to allow plant root establishment;
or (2) areas such as unfinished building pads, or other areas approved
for future development, in which landscaping is planted on an interim
basis.
"Turf"
means a groundcover surface of mowed grass. Annual bluegrass,
Kentucky bluegrass, Perennial ryegrass, Red fescue, and Tall fescue
are common cool-season grasses. Bermudagrass, Kikuyugrass, Seashore
Paspalum, St. Augustinegrass, Zoysiagrass, and Buffalo grass are common
warmseason grasses.
"Valve"
means a device used to control the flow of water in the irrigation
system.
"Water feature"
means a design element where open water performs an aesthetic
or recreational function. Water features include ponds, lakes, waterfalls,
fountains, artificial streams, spas and swimming pools (where water
is artificially supplied). The surface area of water features is included
in the high water use hydrozone of the 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.
"WUCOLS"
means Water Use Classification of Landscape Species published
by the University of California Co-operative Extension, the Department
of Water Resources, and the Bureau of Reclamation, as may be amended.
(Ord. 5659 § 2, 2016)
For the purpose of determining the estimated total water use,
average irrigation efficiency is assumed to be 0.75 for overhead spray
devices and 0.81 for drip system devices.
(Ord. 5659 § 2, 2016)
Graywater systems promote the efficient use of water and are encouraged to assist in on-site landscape irrigation. All graywater systems shall conform to the California Plumbing Code and any applicable city ordinance standards. Refer to Section
14.18.030 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.
(Ord. 5659 § 2, 2016)
Any property owner, person, firm, or corporation, whether as principal, agent, employee or otherwise, violating any provision of this chapter shall be guilty of a misdemeanor, and upon conviction thereof shall be punishable by a fine of not more than $500.00 or by imprisonment in the County Jail for a term not exceeding six months, or by both. The city attorney, in his or her discretion, may reduce any violation of this chapter to an infraction, punishable by a fine of not more than $250.00. Any property owner, person, firm, or corporation shall be deemed guilty of a separate offense for each and every day during any portion of which any violation of this chapter is committed, continued or permitted by such person, firm or corporation, and shall be deemed guilty of a separate offense for each and every day during any portion of which any violation of this chapter is committed, continued or permitted by such person, firm or corporation, and shall be punishable as provided herein. Penalties under the administrative enforcement provisions of Chapter
2.52 of this code may be imposed in lieu of, but not in addition to, penalties imposed by the court for any single violation.
(Ord. 5659 § 2, 2016)
The city shall report on implementation and enforcement of the
WELO by December 31, 2015. Subsequently, reporting for the city will
be done by January 31st of each year. Reports shall be submitted to
the Department of Water Resources (DWR) and address the criteria requested
by DWR.
(Ord. 5659 § 2, 2016)