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Jurupa Valley City Zoning Code

CHAPTER 9

283.- WATER EFFICIENT LANDSCAPE DESIGN REQUIREMENTS

Sec. 9.283.010.- Findings, purpose and intent.

The City Council finds determines and declares that:

(1)

The waters of the state are of limited supply and are subject to ever increasing demands.

(2)

The continuation of California's economic prosperity is dependent on the availability of adequate supplies of water for future uses.

(3)

It is the policy of the State of California to promote the conservation and efficient use of water and to prevent the waste of this valuable resource.

(4)

Landscapes are essential to the quality of life in California by providing areas for active and passive recreation and as an enhancement to the environment by cleaning air and water, preventing erosion, offering fire protection, and replacing ecosystems lost to development.

(5)

Landscape design, installation, maintenance and management can and should be water efficient.

(6)

Section 2 of Article X of the California Constitution specifies that the right to use water is limited to the amount reasonably required for the beneficial use to be served and the right does not and shall not extend to waste or unreasonable method of use.

(7)

Consistent with these findings, the purpose and intent of this chapter is to:

(a)

Promote the values and benefits of landscaping practices that integrate and go beyond the conservation and efficient use of water;

(b)

Establish a structure for planning, designing, installing, maintaining and managing water efficient 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 benefits possible;

(c)

Establish provisions for water management practices and water waste prevention for existing landscapes that conserve and promote the efficient use of water;

(d)

Establish landscapes that are planned, designed, installed, managed and maintained with the watershed based approach that improve California's environmental conditions and provide benefits and realize sustainability goals. Such landscapes will make the urban environment resilient in the face of climatic extremes. Consistent with the legislative findings and purpose of the chapter, conditions in the urban setting will be improved by:

(i)

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, habitat and esthetic benefits.

(ii)

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.

(iii)

Conserving water by capturing and reusing rainwater and graywater wherever reasonably possible and selecting climate appropriate plants that need minimal supplemental water after establishment.

(iv)

Protecting air and water quality by reducing power equipment use and landfill disposal trips, selecting recycled and locally sourced materials, and using compost, mulch and efficient irrigation equipment to prevent erosion.

(v)

Protecting existing habitat and creating new habitat by choosing local native plants, climate adapted non-natives and avoiding invasive plants.

(e)

Reduce the water demands from landscapes without a decline in landscape quality;

(f)

Retain flexibility and encourage creativity through appropriate design;

(g)

Assure the attainment of water efficient landscape goals by requiring that landscapes not exceed a maximum water demand of fifty-five (55) percent of its reference evapotranspiration (ETo) for residential landscape projects, and forty-five (45) percent of ETo for non-residential projects or any lower percentage as may be required by state legislation, whichever is stricter;

(h)

Eliminate water waste from overspray and/or runoff;

(i)

Use water efficiently without waste by setting a maximum applied water allowance as an upper limit for water use and reduce water use to the lowest practical amount;

(j)

Achieve water conservation by raising the public awareness of the need to conserve water through education and motivation to embrace an effective water demand management program;

(k)

Promote the benefits of consistent landscape ordinances with neighboring local and regional agencies;

(l)

Establish economic incentives that promote the efficient use of water, such as implementing a tiered-rate structure;

(m)

Implement the requirements of the California Water Conservation in Landscaping Act 2006, California Assembly Bill 1881 and the California Code of Regulations Title 23, Division 2, Chapter 2.7;

(n)

Implement the requirements of the Jurupa Community Services District (JCSD) Water Conservation Ordinance No. 387; and

(o)

Adopt the necessary authority that implements and enforces the provisions of the Model Water Efficient Landscape Ordinance adopted by the State Water Commission.

(Ord. No. 2015-17, § 2(9.50.010), 11-19-2015)

Sec. 9.283.020. - Definitions.

The terms used in this chapter shall have the meaning set forth below:

Applied water means the portion of water supplied by the irrigation system to the landscape.

Automatic irrigation controller means an automatic timing device used to remotely control valves that operate an irrigation system. Automatic irrigation controllers shall be able to self-adjust and schedule irrigation events using either evapotranspiration (weather-based) or soil moisture data.

Backfilling means to refill an excavation, usually with excavated material.

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.

Certificate of Completion means the document required under Section 9.283.050.

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.

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 the sprinkler heads when the system is off.

Compost means the safe and stable product of controlled biologic decomposition of organic materials that is beneficial to plant growth.

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.

Ecological restoration project means a project where the site is intentionally altered to establish a defined, indigenous, historic ecosystem.

Emitter means a drip irrigation emission device that delivers water slowly from the system to the soil.

Established landscape means the point at which plants in the landscape have developed a significant root growth into the site. Typically, most plants are established after one or two years of growth. Native habitat mitigation areas and trees may need three to five years for establishment.

Estimated (pr) Estimated Total Water Use(ETWU) means the total water used for the landscape as described in Section 9.283.040(F).

ET adjustment factor or 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 efficiency, two major influences upon the amount of water that needs to be applied to the landscape. The ETAF for a new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0. The ETAF for existing non-rehabilitated landscapes is 0.8.

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. (Cal. Health & Saf. Code Section 17922.12.)

Hydrozone means a portion of the landscaped area having plants with similar water needs. A hydrozone may be irrigated or non-irrigated.

Invasive species are non-indigenous species (e.g. plants or animals) that adversely affect the habitats they invade economically, environmentally, or ecologically. Lists of invasive species are included within the Western Riverside County Multiple Species Habitat Conservation Plan and the Coachella Valley Multiple Species Habitat Conservation Plan. Said lists are hereby incorporated by reference.

Landscape architect means a person who holds a license to practice landscape architecture in the State of California.

Landscaped area or LA means all of the planting areas, turf areas, and water features in a landscape design plan subject to the Maximum Applied Water Allowance (MAWA) 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 impervious hardscapes, and other non-irrigated areas designated for non-development (e.g., open space and existing native vegetation).

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.

Local water purveyor means any entity, including a public agency or private water company that provides retail water service to customers in the city of Jurupa Valley.

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, to apply small volumes of water slowly at or near the root zone of plants.

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 or MAWA means the upper limit of annual applied water allowed for the established landscaped area.

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.

Overhead sprinkler irrigation systems means systems that deliver water through the air (e.g. pop ups, impulse sprinklers, spray heads and rotors, etc.).

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 course tees, fairways, roughs, surrounds and greens.

Reference evapotranspiration or 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. Reference evapotranspiration is used as the basis of determining the Maximum Applied Water Allowances so that regional differences in climate can be accommodated. Reference evapotranspiration numbers shall be taken from the most current EvapoTranspiration Zones Map developed by the California Department of Water Resources. For geographic areas not covered by the EvapoTranspiration Zones Map, data from nearby areas shall be used.

Rehabilitated landscapes means any re-landscaping of a project that requires a discretionary permit.

Soil polymers are a soil amendment designed to reduce plant watering by fifty (50) percent reduce transplant shock, soil compaction, and remain effective in the soil for 3-5 years. These polyacrylamide crystals, mixed with soil at planting time, will absorb two hundred (200) to three hundred (300) times their weight in water and hold it in the root zone where the plant can use it.

Special landscape area means an area of the landscape dedicated to edible plants, recreational areas, areas irrigated with recycled water, or water features using recycled water.

Temporarily irrigated means irrigation for the purposes of establishing plants, or irrigation which will not continue after plant establishment. Temporary irrigation is for a period of six (6) months or less.

Water-intensive landscaping means a landscape with a WUCOLS plant factor of 0.7 or greater.

WUCOLS means the publication entitled "Water Use Classification of Landscape Species" by the University of California Cooperative Extension, and the Department of Water Resources (2014 or most current version).

(Ord. No. 2015-17, § 2(9.50.020), 11-19-2015)

Sec. 9.283.030. - Applicability.

A.

The water-efficient landscape requirements set forth in this chapter shall be applicable to all of the following landscape projects:

(1)

New public agency and private development projects with an aggregate landscape area equal to or greater than five hundred (500) square feet requiring a discretionary permit;

(2)

Rehabilitated landscape projects with an aggregate landscape area equal to or greater than two thousand five hundred (2,500) square feet requiring a discretionary permit; and

(3)

Existing landscapes limited to Section 9.283.040.

B.

In the event covenants, conditions and restrictions are required for any permit subject to this chapter, a condition shall be incorporated into any project approval prohibiting the use of water-intensive landscaping and requiring the use of low water use landscaping pursuant to the provisions of this chapter in connection with common area/open space landscaping. Additionally, such a condition shall also require the covenants, conditions and restrictions to incorporate provisions concerning landscape irrigation system management and maintenance. This chapter shall not be construed as requiring landscaping of common areas or open space that is intended to remain natural. Covenants, conditions and restrictions shall not prohibit use of low-water use plants or the replacement of turf with less water intensive plant species.

C.

Recognizing the special landscape needs of cemeteries, new and rehabilitated landscapes within a cemetery are subject only to the provisions set forth in Sections 9.283.050(A) and 9.283.050(B) of this chapter.

D.

For projects using treated or untreated graywater or rainwater captured on site, any lot or parcel within the project that has less than two thousand five hundred (2,500) square feet of landscape and meets the lot's or parcel's landscape water requirement (estimated total water use) entirely with treated or untreated graywater or through stored rainwater captured on site is subject only to the irrigation requirements of Appendix D, Prescriptive Compliance Option of the Water Efficient Landscape Worksheet.

E.

The following uses and projects are exempt from the provisions of this chapter:

(1)

Registered local, state or federal historical sites;

(2)

Ecological restoration projects that do not require a permanent irrigation system and have an establishment period of less than five (5) years;

(3)

Mined land reclamation projects that do not require a permanent irrigation system; and

(4)

Botanical gardens and arboretums open to the public.

(Ord. No. 2015-17, § 2(9.50.030), 11-19-2015)

Sec. 9.283.040. - Landscape documentation requirements.

A.

An applicant proposing any new or rehabilitated landscape for a project subject to Section 9.283.030 of this chapter shall prepare and submit to the Community Development Director documentation that includes the following:

(1)

Project information;

(2)

A planting plan;

(3)

An irrigation design plan;

(4)

A soil management plan;

(5)

A grading design plan; and

(6)

The Model Water Efficient Landscape Worksheet.

B.

The most recent "Riverside County Guide to California Friendly Landscaping" (Landscaping Guide) is hereby incorporated by reference to assist in designing, constructing and maintaining a water efficient landscape and efficient irrigation system.

C.

It is recommended that an applicant proposing any new or rehabilitated landscape that is designated for recycled water use consult with the appropriate local water purveyor early in the development review process to ensure that future recycled water facilities meet the projected demand and that the aforementioned plans, when submitted, comply with the applicable standards, approvals and implementation requirements of this chapter, the local water purveyor and any applicable maintenance entity.

D.

Water systems for common open space areas shall use non-potable water if approved facilities are made available by the local water purveyor. Provisions for a non-potable water system shall be provided within the irrigation design plan. Water systems designed to utilize non-potable water shall be designed to meet all applicable standards of the applicable Regional Water Quality Control Board and the Riverside County Health Department. Prior to construction, the project applicant shall submit a landscape documentation package to the local agency.

E.

Project information. The following items shall be submitted as part of the landscape documentation:

(1)

Date;

(2)

Name of applicant and contact information;

(3)

Name of project owner and contact information;

(4)

Project address including parcel and lot numbers;

(5)

Total landscape area in square feet;

(6)

Project type (e.g. new or rehabilitated, and residential, commercial, or industrial);

(7)

Water supply (e.g. potable, well, recycled; use of recycled water is encouraged);

(8)

Applicant's signature and date with statement, "I agree to comply with the requirements of Chapter 9.283 of Title 9 of the Jurupa Valley Municipal Code and submit a complete Landscape Documentation Package."

F.

Landscape planting plan requirements.

(1)

Plant types shall be grouped together in regards to their water, soil, sun and shade requirements and in relationship to the buildings. Plants with different water needs shall be irrigated separately. Plants with the following classifications shall be grouped accordingly: high and moderate, moderate and low, low and very low. Deviation from these groupings shall be not be permitted.

(2)

Trees for shade shall be provided for residential, commercial and industrial buildings, parking lots and open space areas per the requirements in the Jurupa Valley Zoning Ordinance. These trees can be deciduous or evergreen and are to be incorporated to provide natural cooling opportunities for the purpose of energy and water conservation.

(3)

Plants shall be placed in a manner considerate of solar orientation to maximize summer shade and winter solar gain.

(4)

Plant selection for projects in high fire hazard areas shall address fire safety and prevention. A defensible space or zone around a building or structure is required pursuant to Pub. Resources Code Section 4291 and County Ordinance No. 695, as adopted by the city of Jurupa Valley pursuant to Chapter 1.35 of the Jurupa Valley Municipal Code. Fire-prone plant materials and highly flammable mulches shall be avoided. Refer to the local Fuel Modification Plan guidelines.

(5)

Invasive species of plants such as those listed by the California Invasive Plant Council, shall be avoided especially near parks, buffers, greenbelts, water bodies, conservation areas/reserves and other open space areas because of their potential to cause harm to environmentally sensitive areas.

(6)

Soil preparation.

(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 9.283.040(H)).

(c)

Soil polymers are recommended as a soil amendment as they absorb water and nutrients, increase air space in the soil and can reduce watering by half.

(d)

For landscape installations, compost at a rate of a minimum of four cubic yards per one thousand (1,000) square feet of permeable area shall be incorporated to a depth of six (6) inches into the soil.

(e)

Soils with greater than six (6) percent organic matter in the top six (6) inches of soil are exempt from adding compost and tilling.

(7)

All exposed surfaces of non-turf areas within the developed landscape area shall be mulched with a minimum three (3) inch layer of material, except in areas with groundcover planted from flats where mulch depth shall be one and one-half inches (1½").

(8)

Stabilizing mulching products shall be used on slopes.

(9)

Turf areas shall be used in response to functional needs and in compliance with the water budget.

(10)

Decorative water features shall use re-circulating water systems.

(11)

Where available, recycled water shall be used as the source for irrigation and decorative water features.

(12)

Planting plans shall identify and site the following:

(a)

New and existing trees, shrubs, ground covers, and turf areas within the proposed landscaped area;

(b)

A planting legend indicating all plant species by botanical name and common name, spacing, and quantities of each type of plant by container size;

(c)

Designation of hydrozones;

(d)

Area, in square feet, devoted to landscaping and a breakdown of the total area by landscape hydrozones;

(e)

Property lines, streets, and street names;

(f)

Building locations, driveways, sidewalks, retaining walls, and other hardscape features;

(g)

Appropriate scale and north arrow;

(h)

Any special landscape areas;

(i)

Type of mulch and application depth;

(j)

Type and surface area of water features;

(k)

Type installation details, and 24-hour retention or infiltration capacity of any applicable stormwater best management practices. Project applicants shall refer to the local agency or regional Water Quality Control Board for information on any applicable stormwater technical requirements; and

(l)

Planting specifications and details, including the recommendations from the soils analysis, if applicable.

(13)

Planting Plans shall include the Water Efficient Landscape Worksheet in Appendix B of the Department of Water Resources Model Water Efficient Landscape Ordinance, adopted herein by this reference, that contains information on the plant factor, irrigation method, irrigation efficiency, and area associated with each hydrozone for calculating the maximum applied water allowance and the estimated annual water use.

(a)

Calculations must 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.

(b)

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 of the Department of Water Resources Model Water Efficient Landscape Ordinance, adopted by the Department of Water Resources, adopted herein by this reference.

(c)

Water budget calculations shall adhere to the following requirements:

(i)

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.

(ii)

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.

(iii)

All Special Landscape Areas shall be identified and their water use calculated per Appendix B of the Department of Water Resources Model Water Efficient Landscape Ordinance.

(iv)

ETAF for new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0.

(14)

Planting plans and irrigation plans (Section 9.283.040(G)) shall be drawn at the same size and scale.

(15)

The planting plan shall be prepared by a Landscape Architect licensed by the State of California.

G.

Water Efficient Landscape Worksheet.

(1)

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

(2)

In calculating the Maximum Applied Water Allowance and Estimated Total Water Use, a project applicant shall use the following ETo values:

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

 

(3)

Water budget calculations shall adhere to the following requirements:

(a)

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.

(b)

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.

(c)

All Special Landscape Areas shall be identified and their water use calculated as shown in Appendix A.

(d)

ETAF for new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0.

H.

Irrigation Design Plan requirements. This section applies to landscaped areas requiring permanent irrigation, not areas that require temporary irrigation solely for the plant establishment period.

(1)

Irrigation systems shall be designed, maintained, and managed to meet or exceed an average irrigation efficiency of 0.75 for overhead spray devices and 0.81 for drip system devices.

(2)

All irrigation systems shall be designed to prevent runoff, over-spray, lowhead drainage and other similar conditions where water flows off-site on to adjacent property, non-irrigated areas, walk, roadways, or structures. Irrigation systems shall be designed, constructed, managed, and maintained to achieve as high an overall efficiency as possible. 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.

(3)

Landscaped areas shall be provided with a smart irrigation controller utilizing non-volatile memory which automatically adjusts the frequency and/or duration of irrigation events in response to changing weather conditions unless the use of the property would otherwise prohibit use of a timer. The planting areas shall be grouped in relation to moisture control zones based on similarity of water requirements (i.e., turf separate from shrub and groundcover, full sun exposure areas separate from shade areas, top of slope separate from toe of slope). Additional water conservation technology may be required, where necessary, at the discretion of the Community Development Director.

(4)

Water systems for common open space areas shall use non-potable water, if approved facilities are made available by the water purveyor. Provisions for the conversion to a non-potable water system shall be provided within the landscape plan. Water systems designed to utilize non-potable water shall be designed to meet all applicable standards of the California Regional Water Quality Control Board and the Riverside County Health Department.

(5)

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 (California Code of Regulations Title 24, Part 5, Chapter 16) and any applicable local ordinance standards.

(6)

Separate valves shall be provided for separate water use planting areas, so that plants with similar water needs are irrigated by the same irrigation valve. All installations shall rely on highly efficient state of the art irrigation systems to eliminate runoff and maximize irrigation efficiency as required by the Landscaping Guide.

(7)

If the water pressure is below or exceeds the recommended pressure of the specified irrigation devices, the installation of a pressure regulating device is required to ensure that the dynamic pressure at each emission device is within the manufacturer's recommended pressure range for optimal performance.

(8)

Static water pressure, dynamic or operating pressure and flow reading of the water supply shall be measured. 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 the installation.

(9)

The capacity of the irrigation system shall not exceed:

(a)

The capacity required for peak water demand based on water budget calculations;

(b)

Meter capacity; or

(c)

Backflow preventer type and device capacity.

(10)

Sprinkler heads and other emission devices shall have matched precipitation rates, unless otherwise directed by the manufacturer.

(11)

In mulched planting areas, the use of low volume irrigation is required to maximize water infiltration into the root zone.

(12)

Slopes greater than twenty-five (25) percent shall not be irrigated with an application 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 required to be submitted pursuant to this chapter, and if there is a clear demonstration that no runoff or erosion will occur. Prevention of runoff and erosion must be confirmed during the irrigation audit.

(13)

Areas less than ten (10) feet in width in any direction shall be irrigated with subsurface irrigation or other means that produce no runoff or overspray.

(14)

Overhead irrigation shall not be permitted within twenty-four (24) inches of any non-permeable surface. There are no restrictions on the irrigation system type if the landscape area is adjacent to permeable surfacing and no overspray and runoff occurs.

(15)

Overhead irrigation shall be limited to the hours of eight (8:00) p.m. to nine (9:00) a.m.

(16)

All irrigation systems shall be equipped with the following:

(a)

A smart irrigation controller as defined in Section 9.283.040(G)(3) of this chapter;

(b)

A rain sensing device to prevent irrigation during rainy weather;

(c)

Anti-drain check valves installed at strategic points to minimize or prevent low-head drainage;

(d)

A manual shut-off 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 or routine repair;

(e)

A pressure regulator when the static water pressure is above the recommended operating pressure of the irrigation system;

(f)

Backflow prevention devices;

(g)

Flow sensors that detect high flow conditions created by system damage or malfunction on all non-residential landscapes and residential landscapes of five thousand (5,000) square feet or larger; and

(h)

Riser protection components for all risers adjacent to hardscapes or in high traffic areas.

(17)

Master shut-off 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.

(18)

Landscape water meters, defined as either a dedicated water service meter or private submeter, shall be required for all non-residential irrigated landscapes of one thousand (1,000) square feet but not more than five thousand (5,000) square feet and residential irrigated landscapes of five thousand (5,000) square feet or greater.

(19)

Irrigation design plans shall identity and site the following:

(a)

Hydrozones:

(i)

Each hydrozone shall be designated by number, letter or other designation;

(ii)

A hydrozone information table shall be prepared for each hydrozone;

(b)

The areas irrigated by each valve;

(c)

Irrigation point of connection (POC) to the water system;

(d)

Static water pressure at POC;

(e)

Location and size of water meter(s), service laterals, and backflow preventers;

(f)

Location, size, and type of all components of the irrigation system, including automatic controllers, main and lateral lines, valves, sprinkler heads and nozzles, pressure regulator, drip and low volume irrigation equipment;

(g)

Total flow rate (gallons per minute), and design operating pressure (psi) for each overhead spray and bubbler circuit, and total flow rate (gallons per hour) and psi for each drip and low volume irrigation circuit;

(h)

Precipitation rate (inches per hour) for each overhead spray circuit; Irrigation legend with the manufacturer name, model number, and general description for all specified equipment, separate symbols for all irrigation equipment with different spray patterns, spray radius, and precipitation rate;

(i)

Irrigation system details for assembly and installation;

(j)

Recommended irrigation schedule for each month, including number of irrigation days per week, number of start times (cycles) per day, minutes of run time per cycle, and estimated amount of applied irrigation water, expressed in gallons per month and gallons per year, for the established landscape; and

(k)

Irrigation design plans shall contain the following statement, "I agree to comply with the criteria of Chapter 9.283 of Title 9 of the Jurupa Valley Municipal Code and to apply the criteria for the efficient use of water in the irrigation design plan."

(20)

For each valve, two (2) irrigation schedules shall be prepared, one for the initial establishment period of six (6) months and one for the established landscape, which incorporate the specific water needs of the plants and turf throughout the calendar year.

(21)

Irrigation design plans and planting plans (Section 9.283.040(F)) shall be drawn at the same size and scale.

I.

Soil Management Plan requirements.

(1)

After mass grading, the project applicant shall:

(a)

Perform a preliminary site inspection;

(b)

Determine the appropriate level of soil sampling and sampling method needed to obtain representative soil sample(s);

(c)

Conduct a soil probe test to determine if the soil in the landscape area has sufficient depth to support the intended plants; and

(d)

Obtain appropriate soil sample(s).

(2)

The project applicant shall submit soil sample(s) to a laboratory for analysis and recommendation. The soil analysis shall include:

(a)

Soil texture;

(b)

Infiltration rate determined by laboratory test or soil texture infiltration rate tables;

(c)

pH;

(d)

Total soluble salts;

(e)

Sodium; and

(f)

Recommendations.

(3)

The project applicant shall prepare documentation describing the following:

(a)

Soil type;

(b)

Identification of limiting soil characteristics;

(c)

Identification of planned soil management actions to remediate limiting soil characteristics; and

(4)

The applicant shall submit the soil analysis report and documentation verifying implementation of soil analysis report recommendations to the city pursuant to the requirements of Section 9.283.060.

J.

Grading Design Plan requirements. The landscape documentation submitted shall also include rough/precise grade elevations prepared for the project by a licensed civil engineer or licensed landscape architect.

(Ord. No. 2015-17, § 2(9.50.040), 11-19-2015; Ord. No. 2021-09, § 4, 4-15-2021)

Sec. 9.283.050. - Landscape irrigation and maintenance.

This section shall apply to all projects subject to the provisions of this chapter as set forth in Section 9.283.030.

(1)

Two (2) irrigation schedules shall be prepared, one for the initial establishment period of six (6) months and one for the established landscape, which incorporate the specific water needs of the plants and turf throughout the calendar year. The irrigation schedule shall take into account the particular characteristics of the soil; shall be continuously available on site to those responsible for the landscape maintenance; and shall contain specifics as to optimum run time and frequency of watering, and irrigation hours per day. The schedule currently in effect shall be posted at the controller.

(2)

A regular maintenance schedule and Certificate of Completion shall be submitted to the Community Development Director, property owner, and water purveyor. 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 irrigation devices. Repair of all irrigation equipment shall be done with the originally installed components or equivalent or with components with greater efficiency.

(3)

All model homes shall be landscaped and use signs and written information to demonstrate the principles of water efficient landscapes described in this chapter. Signage shall include information about the site water use as designed per the local ordinance; specify who designed and installed the water efficient landscape; and demonstrate low water use approaches to landscaping such as using native plants, graywater systems, rainwater catchment systems and smart controllers.

(4)

Information shall be provided to owners of new, single family residential homes regarding the design, installation, management, and maintenance of water efficient landscapes.

(Ord. No. 2015-17, § 2(9.50.050), 11-19-2015; Ord. No. 2021-09, § 4, 4-15-2021)

Sec. 9.283.060. - Compliance and plan submittal process.

Prior to issuance of a building permit for the project, the project applicant shall:

(1)

Submit all landscape documents required by Section 9.283.040 for review and approval by the Community Development Director. The planting plan, irrigation design plan, and soils management plan shall be reviewed by an independent licensed landscape architect to ensure that all components of the plans adhere to the requirements of this chapter. The licensed landscape architect shall sign all plans verifying that the plans comply with this chapter. Any plans submitted without the signature of a licensed landscape architect shall not be accepted for review.

(2)

Prior to issuance of a certificate of occupancy or final inspection for the project, a regular maintenance schedule and a Certificate of Completion shall be submitted to the Community Development Director certifying that the landscaping has been completed in accordance with the approved planting and irrigation design, soil management, and grading design plans for the project. The Certificate of Completion shall be signed by a licensed landscape architect and shall indicate:

(a)

Date;

(b)

Project information:

(i)

Project name;

(ii)

Project applicant name, telephone and mailing address;

(iii)

Project address and location; and

(iv)

Property owner name and mailing address;

(c)

Prior to backfilling, evidence that the party responsible for irrigation installation conducted a preliminary field inspection of the irrigation system (evidence of field inspection shall be attached);

(d)

The landscaping has been installed in conformance with the approved planting and irrigation design plans;

(e)

Irrigation audit report performed by a certified landscape irrigation auditor after project installation (audit report shall be attached);

(f)

The smart irrigation controller has been set according to the irrigation schedule;

(g)

The irrigation system has been adjusted to maximize irrigation efficiency and eliminate overspray and runoff; and a copy of the approved landscape documentation (Section 9.283.040), the irrigation schedule (Section 9.283.050(A)) and the maintenance schedule (Section 9.283.060(B)) has been given to the property owner and local water purveyor;

(h)

The Model Water Efficient Landscape Worksheet; and

(i)

Verification that the maintenance schedule has been provided to the Community Development Director.

(3)

At a minimum, all landscape irrigation audits shall comply with the "Irrigation Association Certified Landscape Irrigation Auditor Training Manual" (2004 or most current) and shall be conducted by a certified landscape irrigation auditor. Landscape audits shall not be conducted by the person who designed the landscape or installed the landscape.

(4)

In large projects or projects with multiple landscape installations (i.e. production home developments) an auditing rate of one (1) in seven (7) lots or approximately fifteen (15) percent will satisfy this requirement.

(5)

The Community Development Director, or his or her designee, may enter upon the project site at any time before, during and after installation of the landscaping, to conduct inspections for the purpose of enforcing this chapter.

(Ord. No. 2015-17, § 2(9.50.060), 11-19-2015; Ord. No. 2021-09, § 4, 4-15-2021)