§ 18.148

Project applicant may elect to complete a water budget calculation for the landscape project using the water efficient landscape worksheet in Appendix B. Water budget calculations, if prepared, 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 (SLA) shall be identified and their water use included in the water budget calculations.

D.

The reference evapotranspiration adjustment factor (ETAF) for SLA shall not exceed 1.0. The ETAF for all other landscaped areas shall not exceed 0.55 for residential areas and 0.45 for non-residential areas.

E.

ETo values from the reference evapotranspiration table in Appendix A shall be used in calculating the maximum applied water allowance (MAWA) and estimated total water use (ETWU). For geographic areas not covered in Appendix A, use data from other cities located nearby in the same reference evapotranspiration zone, as found in the CIMIS Reference Evapotranspiration Zones Map, Department of Water Resources, 1999. For the purpose of determining estimated total water use, average irrigation efficiency is assumed to be 0.75 for overhead spray devices and 0.81 for drip system devices.

F.

MAWA shall be calculated using the equation below:

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

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

Where:

MAWA = maximum applied water allowance (gallons per year)

ETo = reference evapotranspiration (inches per year)

0.62 = conversion factor (to gallons)

0.55 = reference evapotranspiration adjustment factor (ETAF) for residential areas

0.45 = reference evapotranspiration adjustment factor (ETAF) for non-residential areas

LA = landscape area including SLA (square feet)

0.45 = additional water allowance for SLA in residential areas

0.55 = additional water allowance for SLA in non-residential areas

SLA = special landscape area (square feet)

G.

A local agency or project applicant may consider effective precipitation (Twenty-five percent of annual precipitation) in tracking water use and may use the following equation to calculate the MAWA:

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

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

H.

Estimated total water use (ETWU) will be calculated using the equation below. The sum of the ETWU calculated for all hydrozones will not exceed the MAWA.

==> picture [156 x 34] intentionally omitted <==

Where:

ETWU = estimated total water use per year (gallons)

ETo = reference evapotranspiration (inches)

PF = plant factor from WUCOLS (see Section 491)

HA = hydrozone area [high, medium, and low water use areas] (square feet)

0.75 = irrigation efficiency (IE) for overhead spray devices

0.81 = irrigation efficiency (IE) for drip system devices

SLA = special landscape area (square feet)

0.62 = conversion factor

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

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. Methods to achieve water efficiency shall include one or more of the following:

(1)

Protection and preservation of native species and natural vegetation;

(2)

Selection of water-conserving plant, tree and turf species, especially local native plants;

(3)

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

(4)

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

(5)

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

(6)

Selection of plants from local fuel modification plan guidelines.

b.

Each hydrozone shall have plant materials with similar water use, with the exception of hydrozones with plants of mixed water use, as specified in Section 18.148.100.A.2.d.

c.

Plants shall be selected and planted appropriately based upon their adaptability to the climatic, geologic, and topographical conditions of the project site. Methods to achieve water efficiency shall include one or more of the following:

(1)

Use the Sunset Western Climate Zone System which takes into account temperature, humidity, elevation, terrain, latitude, and varying degrees of continental and marine influence on local climate;

(2)

Recognize the horticultural attributes of plants (i.e., mature plant size, invasive surface roots) to minimize damage to property or infrastructure [e.g., buildings, sidewalks, power lines]; allow for adequate soil volume for healthy root growth;

(3)

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

d.

Turf is not allowed on slopes greater than twenty-five percent where the toe of the slope is adjacent to an impermeable hardscape and where twenty-five percent means one foot of vertical elevation change for every four feet of horizontal length (rise divided by run times one hundred = slope percent).

e.

High water use plants, characterized by a plant factor of 0.7 to 1.0, are prohibited in street medians.

f.

A landscape design plan for projects in fire-prone areas shall address fire safety and prevention. A defensible space or zone around a building or structure is required per Public Resources Code Section 4291(a) and (b). Avoid fire-prone plant materials and highly flammable mulches. Refer to the local fuel modification plan guidelines.

g.

The use of invasive plant species, such as those listed by the California Invasive Plant Council, is strongly discouraged.

h.

The architectural guidelines of a common interest development, which include community apartment projects, condominiums, planned developments, and stock cooperatives, shall not prohibit or include

conditions that have the effect of prohibiting the use of low-water use plants as a group.

2.

Water features.

a.

Recirculating water systems shall be used for water features.

b.

Where available, recycled water shall be used as a source for decorative water features.

c.

Surface area of a water feature shall be included in the high water use hydrozone area of the water budget calculation.

d.

Pool and spa covers are required on any newly constructed pool or spa.

3.

Soil preparation, mulch and amendments.

a.

Prior to the planting of any materials, compacted soils shall be transformed to a friable condition. On engineered slopes, only amended planting holes need meet this requirement.

b.

Soil amendments shall be incorporated according to recommendations of the soil report and what is appropriate for the plants selected (see Section 18.148.070).

c.

For landscape installations, compost at a rate of a minimum of four cubic yards per one thousand square feet of permeable area shall be incorporated to a depth of six inches into the soil. Soils with greater than six percent organic matter in the top six inches of soil are exempt from adding compost and tilling.

d.

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

e.

Stabilizing mulching products shall be used on slopes that meet current engineering standards.

f.

The mulching portion of the seed/mulch slurry in hydro-seeded applications shall meet the mulching requirement.

g.

Organic mulch materials made from recycled or post-consumer shall take precedence over inorganic materials or virgin forest products unless the recycled post-consumer organic products are not locally available. Organic mulches are not required where prohibited by local fuel modification plan guidelines or other applicable local ordinances.

B.

The landscape design plan, at a minimum, shall:

1.

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

2.

Identify each hydrozone as low, moderate, high water, or mixed water use. Temporarily irrigated areas of the landscape shall be included in the low water use hydrozone for the water budget calculation;

3.

Identify recreational areas;

4.

Identify areas permanently and solely dedicated to edible plants;

5.

Identify areas irrigated with recycled water;

6.

Identify type of mulch and application depth;

7.

Identify soil amendments, type, and quantity;

8.

Identify type and surface area of water features;

Identify hardscapes (pervious and non-pervious);

10.

Identify location, installation details, and twenty-four-hour retention or infiltration capacity of any applicable stormwater best management practices that encourage on-site retention and infiltration of stormwater. Project applicants shall refer to the local agency or regional water quality control board for information on any applicable stormwater technical requirements. Stormwater best management practices are encouraged in the landscape design plan and examples are provided in Section 18.148.160.

11.

Identify any applicable rain harvesting or catchment technologies as discussed in Section 18.148.160 and their twenty-four-hour retention or infiltration capacity;

12.

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

13.

Contain the following statement: "I have complied with the criteria of the ordinance and applied them for the efficient use of water in the landscape design plan"; and

14.

Bear the signature of a licensed landscape architect, licensed landscape contractor, or any other person authorized to design a landscape. (See Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business and Professions Code, Section 832.27 of Title 16 of the California Code of Regulations, and Section 6721 of the Food and Agriculture Code.).

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

18.148.100 - Irrigation design plan.

A.

This section applies to landscaped areas requiring permanent irrigation, not areas that require temporary irrigation solely for the plant establishment period. For the efficient use of water, an irrigation system shall meet all the requirements listed in this section and the manufacturers' recommendations. The irrigation system and its related components shall be planned and designed to allow for proper installation, management, and maintenance. An irrigation design plan meeting the following design criteria shall be submitted as part of the landscape documentation package.

1.

System.

a.

Landscape water meters, defined as either a dedicated water service meter or private submeter, shall be installed for all non-residential irrigated landscapes of one thousand square feet but not more than five thousand square feet (the level at which Water Code 535 applies) and residential irrigated landscapes of five thousand square feet or greater. A landscape water meter may be either:

(1)

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

(2)

A privately owned meter or submeter.

b.

Automatic irrigation controllers utilizing either evapotranspiration or soil moisture sensor data utilizing nonvolatile memory shall be required for irrigation scheduling in all irrigation systems.

c.

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.

(1)

If the static pressure is above or below the required dynamic pressure of the irrigation system, pressureregulating devices such as inline pressure regulators, booster pumps, or other devices shall be installed to meet the required dynamic pressure of the irrigation system.

(2)

Static water pressure, dynamic or operating pressure, and flow reading of the water supply shall be measured at the point of connection. These pressure and flow measurements shall be conducted at the design stage. If the measurements are not available at the design stage, the measurements shall be conducted at installation.

d.

Sensors (rain, freeze, wind, etc.), either integral or auxiliary, that suspend or alter irrigation operation during unfavorable weather conditions shall be required on all irrigation systems, as appropriate for local climatic conditions. Irrigation should be avoided during windy or freezing weather or during rain.

e.

Manual shut-off valves (such as a gate valve, ball valve, or butterfly valve) shall be required, as close as possible to the point of connection of the water supply, to minimize water loss in case of an emergency (such as a main line break) or routine repair.

f.

Backflow prevention devices shall be required to protect the water supply from contamination by the irrigation system. A project applicant shall refer to the applicable local agency code (i.e., public health) for additional backflow prevention requirements.

g.

Flow sensors that detect high flow conditions created by system damage or malfunction are required for all on non-residential landscapes and residential landscapes of five thousand square feet or larger.

h.

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.

i.

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.

j.

Relevant information from the soil management plan, such as soil type and infiltration rate, shall be utilized when designing irrigation systems.

k.

The design of the irrigation system shall conform to the hydrozones of the landscape design plan.

l.

The irrigation system must be designed and installed to meet, at a minimum, the irrigation efficiency criteria as described in Section 18.148.080 regarding the maximum applied water allowance.

m.

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

n.

It is highly recommended that the project applicant or local agency inquire with the local water purveyor about peak water operating demands (on the water supply system) or water restrictions that may impact the effectiveness of the irrigation system.

o.

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

p.

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

q.

Head to head coverage is recommended. However, sprinkler spacing shall be designed to achieve the highest possible distribution uniformity using the manufacturer's recommendations.

r.

Swing joints or other riser-protection components are required on all risers subject to damage that are adjacent to hardscapes or in high traffic areas of turf grass.

s.

Check valves or anti-drain valves are required on all sprinkler heads where low point drainage could occur.

t.

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

u.

Overhead irrigation shall not be permitted within twenty-four inches of any non-permeable surface. Allowable irrigation within the setback from non-permeable surfaces may include drip, drip line, or other low flow non-spray technology. The setback area may be planted or unplanted. The surfacing of the setback may be mulch, gravel, or other porous material. These restrictions may be modified if:

(1)

The landscape area is adjacent to permeable surfacing and no runoff occurs; or

(2)

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

(3)

The irrigation designer specifies an alternative design or technology, as part of the landscape documentation package and clearly demonstrates strict adherence to irrigation system design criteria in Section 18.148.100A.1. Prevention of overspray and runoff must be confirmed during the irrigation audit.

v.

Slopes greater than twenty-five percent shall not be irrigated with an irrigation system with an application rate exceeding three-fourths of one inch 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 heads and other emission devices shall be selected based on what is appropriate for the plant type within that hydrozone.

c.

Where feasible, trees shall be placed on separate valves from shrubs, groundcovers, and turf to facilitate the appropriate irrigation of trees. The mature size and extent of the root zone shall be considered when designing irrigation for the tree.

d.

Individual hydrozones that mix plants of moderate and low water use, or moderate and high water use, may be allowed if:

(1)

Plant factor calculation is based on the proportions of the respective plant water uses and their plant factor; or

(2)

The plant factor of the higher water using plant is used for calculations.

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 18.148.170;

6.

The following statement: "I have complied with the criteria of the ordinance and applied them accordingly for the efficient use of water in the irrigation design plan"; and

7.

The signature of a licensed landscape architect, certified irrigation designer, licensed landscape contractor, or any other person authorized to design an irrigation system. (See Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the Business and Professions Code, Section 832.27 of Title 16 of the California Code of Regulations, and Section 6721 of the Food and Agricultural Code.)

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

A.

For the efficient use of water, grading of a project site shall be designed to minimize soil erosion, runoff, and water waste. A grading plan or completed grading design survey (Appendix E) shall be submitted as part of the landscape documentation package. A comprehensive grading plan prepared by a civil engineer for other local agency permits satisfies this requirement.

The project applicant shall submit a landscape grading plan that indicates finished configurations and elevations of the landscape area including:

a.

Height of graded slopes;

b.

Drainage patterns;

c.

Pad elevations;

d.

Finish grade; and

e.

Stormwater retention improvements, if applicable

2.

To prevent excessive erosion and runoff, it is highly recommended that project applicants:

a.

Grade so that all irrigation and normal rainfall remains within property lines and does not drain on to nonpermeable hardscapes;

b.

Avoid disruption of natural drainage patterns and undisturbed soil; and

c.

Avoid soil compaction in landscape areas.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

A.

The certificate of completion (see Appendix C for a sample certificate) shall include the following six elements:

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;

b.

A diagram of the irrigation plan showing hydrozones shall be kept with the irrigation controller for subsequent management purposes.

3.

Irrigation scheduling parameters used to set the controller (see Section 18.148.140);

4.

Landscape and irrigation maintenance schedule (see Section 18.148.150);

5.

Irrigation audit report (see Section 18.148.130); and

Soil analysis report or soil management survey, if not submitted with landscape documentation package, and documentation verifying implementation of soil report recommendations (see Section 18.148.070).

B.

The project applicant shall:

1.

Submit the signed certificate of completion to the local agency for review;

2.

Ensure that copies of the approved certificate of completion are submitted to the local water purveyor and property owner or his or her designee.

C.

The local agency shall:

1.

Receive the signed certificate of completion from the project applicant;

2.

Approve or deny the certificate of completion. If the certificate of completion is denied, the local agency shall provide information to the project applicant regarding reapplication, appeal, or other assistance.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

18.148.130 - Landscape audit report.

A.

The landscape audit report shall include, but is not limited to: inspection to confirm that the landscaping and irrigation system were installed as specified in the landscape and irrigation design plan, system tuneup, system test with distribution uniformity, reporting overspray or runoff that causes overland flow, and preparation of an irrigation schedule.

B.

The landscape audit report shall include the following statement: "The landscape and irrigation system has been installed as specified in the landscape and irrigation design plan and complies with the criteria of the ordinance and the permit".

C.

Local agency shall administer on-going programs that may include, but not be limited to, post-installation landscape inspection, irrigation water use analysis, irrigation audits, irrigation surveys and water budget calculations to evaluate compliance with the MAWA.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

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 eight p.m. and ten a.m. unless weather conditions prevent it. If allowable hours of irrigation differ from the local water purveyor, the stricter of the two shall apply. Operation of the irrigation system outside the normal watering window is allowed for auditing and system maintenance.

3.

For implementation of the irrigation schedule, particular attention must be paid to irrigation run times, emission device, flow rate, and current reference evapotranspiration, so that applied water meets the estimated total water use. Total annual applied water shall be less than or equal to maximum applied water allowance (MAWA). Actual irrigation schedules shall be regulated by automatic irrigation controllers using current reference evapotranspiration data (e.g., CIMIS) or soil moisture sensor data.

4.

Parameters used to set the automatic controller shall be developed and submitted for each of the following:

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 runoff;

d.

Amount of applied water scheduled to be applied on a monthly basis;

e.

Application rate setting;

f.

Root depth setting;

g.

Plant type setting;

h.

Soil type;

i.

Slope factor setting;

j.

Shade factor setting; and

k.

Irrigation uniformity or efficiency setting.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

18.148.150 - Landscape and irrigation maintenance schedule.

A.

Landscapes shall be maintained to ensure water use efficiency. A regular maintenance schedule shall be submitted with the certificate of completion.

B.

A regular maintenance schedule shall include, but not be limited to, routine inspection; auditing; adjustment and repair of the irrigation system and its components; aerating and dethatching turf areas; topdressing with compost; replenishing mulch; fertilizing; pruning; weeding in all landscape areas; and removing obstructions to emission devices. Operation of the irrigation system outside the normal watering window is allowed for auditing and system maintenance.

C.

Repair of all irrigation equipment shall be done with the originally installed components or their equivalents or with components with greater efficiency.

D.

A project applicant is encouraged to implement established landscape industry sustainable best practices for all landscape maintenance activities.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

A.

Stormwater management practices minimize runoff and increase infiltration which recharges groundwater and improves water quality. Implementing stormwater best management practices into the landscape and grading design plans to minimize runoff and to increase on-site rainwater retention and infiltration are encouraged.

B.

Project applicants shall refer to the local agency or regional water quality control board for information on any applicable stormwater technical requirements.

C.

All planted landscape areas are required to have friable soil to maximize water retention and infiltration. Refer to Section 18.148.090.A.3.

D.

It is strongly recommended that landscape areas be designed for capture and infiltration capacity that is sufficient to prevent runoff from impervious surfaces (i.e. roof and paved areas) from either: the one inch, twenty-four-hour rain event or (2) the eighty-fifth percentile, twenty-four-hour rain event, and/or additional capacity as required by any applicable local, regional, state or federal regulation.

E.

It is recommended that stormwater projects incorporate any of the following elements to improve on-site stormwater and dry weather runoff capture and use:

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

2.

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

3.

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

4.

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

5.

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

6.

Incorporate infiltration beds, swales, basins and drywells to capture stormwater and dry weather runoff and increase percolation into the soil.

7.

Consider constructed wetlands and ponds that retain water, equalize excess flow, and filter pollutants.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

18.148.170 - Recycled water.

A.

The installation of recycled water irrigation systems shall allow for the current and future use of recycled water.

B.

All recycled water irrigation systems shall be designed and operated in accordance with all applicable local and state laws.

C.

Landscapes using recycled water are considered special landscape areas. The ET adjustment factor for new and existing (non-rehabilitated) special landscape areas shall not exceed 1.0.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

A.

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 (Title 24, Part 5, Chapter 16) and any applicable local ordinance standards. Refer to Section 18.148.020.B. for the applicability of this ordinance to landscape areas less than two thousand five hundred square feet with the estimated total water use met entirely by graywater.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

The local agency must comply with the California Environmental Quality Act (CEQA), as appropriate.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

A local agency may by mutual agreement, designate another agency, such as a water purveyor, to implement some or all of the requirements contained in this ordinance. Local agencies may collaborate with water purveyors to define each entity's specific responsibilities relating to this ordinance.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

18.148.210 - Provisions for existing landscapes over one acre in size.

This section shall apply to all existing landscapes that were installed before [February 17, 2016] and are over one acre in size.

A.

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

1.

For landscapes that have a water meter, the local agency shall administer programs that may include, but not be limited to, irrigation water use analyses, irrigation surveys, and irrigation audits to evaluate water use and provide recommendations as necessary to reduce landscape water use to a level that does not exceed the MAWA for existing landscapes. The MAWA for existing landscapes shall be calculated as:

MAWA = (0.8) (ETo)(LA)(0.62).

2.

For landscapes that do not have a meter, the local agency shall administer programs that may include, but not be limited to, irrigation surveys and irrigation audits to evaluate water use and provide recommendations as necessary in order to prevent water waste.

All landscape irrigation audits for existing landscapes that are greater than one acre in size shall be conducted by a certified landscape irrigation auditor.

B.

Water Waste Prevention.

1.

Local agencies shall prevent water waste resulting from inefficient landscape irrigation by prohibiting runoff from leaving the target landscape due to low head drainage, overspray, or other similar conditions where water flows onto adjacent property, non-irrigated areas, walks, roadways, parking lots, or structures.

2.

Restrictions regarding overspray and runoff may be modified if:

a.

The landscape area is adjacent to permeable surfacing and no runoff occurs; or

b.

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

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

Any person violating any provision of this chapter shall be deemed guilty of an infraction and shall be punished in accordance with Section 1.24.010.B. of this code. As an alternative to all other available remedies, including penalties available pursuant to this section, any person violating any provision of this chapter shall be subject to administrative penalties and fines pursuant to the authorities and procedures set forth in Chapter 1.19.

(Ord. No. 2277 N.S., § 5(Exh. A), 6-6-2018)

Chapter 18.152 - AGRICULTURAL MITIGATION