water efficient landscape ordinance 2015 revision workshop
TRANSCRIPT
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Water Efficient Landscape Ordinance2015 Revision Workshop
Utility Field Operations Facility
January 12, 2016
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WELO Workshop Agenda• Welcome/Introductions
• Santa Rosa Water-Use Efficiency Program
• WELO Background and Purpose
• 2015 WELO Revision
• Maximum Applied Water Allowance
• Soil Analysis Report
• Landscape Design Plan
• Irrigation Design Plan
• Grading Design Plan
• Documentation for Compliance
• Q&A
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• Started in 1970’s
• Sustainable Water Savings-1.5 Billion Gallons per Year
• 50,000 Toilets Upgraded
• Over 3 Million sq ft of Lawn Removed
• About the size of 63 football fields
• Water savings equal to 800 homes
City of Santa RosaWater-Use Efficiency Program
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Rebates & Incentives
Residential/Commercial Check-ups◦ Indoor & Outdoor
◦ Free Hardware
Outreach & Education◦ Public Events
◦ Free Workshops
◦ Free Literature
Tools◦ WaterSmart
◦ Landscape H20 ROI Calculator
◦ www.srcity.org/wue
WUE Program Services
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WUE Rebates and Incentives• Residential and Commercial
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Green Exchange Rebate
• Irrigation Efficiency Upgrades
• $100 max - residential
• $1,000 max (per meter) – commercial
• Cash for Grass
• $0.50/sqft (Drought Special $1.00)
• 500 sqft max - residential
• 5,000 sqft max (per meter)-commercial
• Pre inspection or workshop completion
• Post inspection
• $$ upon installation completion
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Rainwater Harvesting Rebate
• $0.25 per gallon of storage • Up to peak month (July) site
• Cost of materials only
• Backflow required for some systems• Systems with pumps, pressurization, electrical
power or controls, potable water connections
• Plumbing permit needed
• Requires annual testing
• Pre & post inspection
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Graywater Reuse Rebate• $75 per fixture• Laundry to Landscape Workshops
• Engineered System
• $200 for every 1,000 gallons of monthly savings
• Building Permit
• Design Plans
• Post inspection
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WELO Background
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• 1991 – State: AB 325 (Landscape Model Ordinance)
• 1992 – Santa Rosa: Water Efficient Landscape Policy
• 2006 – State: AB 1881 directed Department of Water Resources (DWR) to revise State Ordinance
• 2007 – Santa Rosa: Single Family Landscape Standards
• 2009 – State: DWR releases new State Ordinance
• 2010 – Santa Rosa: Water Efficient Landscape Ordinance (WELO)
• July 15, 2015- State: California Water Commission approvesrevised State Ordinance
• December, 2015 – Santa Rosa: Revised Water Efficient Landscape Ordinance (WELO)
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Efficient vs. Non-Efficient
• Majority low-water use plants
• Drip irrigation
• SMART irrigation controller
• Majority high-water use plants
• Overhead irrigation
• Standard controller
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Water Efficient Landscape Ordinance
Purpose:
• Prevent waste and unreasonable use
• Protect local water supply
• Whole system approach
• Climate appropriate
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Water Efficient Landscape Ordinance
Applicability:
• Revision effective December 1, 2015
• All new and rehabilitated landscapes (tied to building permits)
• Does not apply to:
• Projects completed under previous Ordinance/Policies
• Historical landscape areas
• Ecological restoration projects
• Existing botanical gardens and arboretums 12
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City’s 2015 WELO Revision
• New MAWA
• Soils report required
• Friable soil conditions
• Irrigation audit required
• Encourages storm water capture and graywater use
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Maximum Applied Water Allowance Requirement
• Water budget approach calculated using evapotranspiration (ET)
• ET = amount of water lost due to evaporation from soil and transpiration through plants
• Additional factors include
• Plant types
• Irrigation system efficiency
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Maximum Applied Water Allowance Requirement (MAWA)
• 2015 revision limits amount of high water-use plant material in landscapes
• Residential= 25%
• Commercial, Industrial, Institutional = 0%
(unless Recreational Area)
• Recreational Area = areas designed for active play, recreation or public assembly
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Revised MAWA (Appendix A)
• Reduced Evapotranspiration Adjustment Factor (ETAF)
• Adjusted Special Landscape Area (SLA)
• Reduced Irrigation Efficiency (IE)
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ETAF 2010 2015
Commercial 0.6 .45
Special Landscape Area- Commercial
0.4 .55
Residential 0.6 .55
Special Landscape Area- Residential
0.4 .45
IE
2010 2015
% of total landscape irrigated with drip (more drip = higher IE)
.81 Drip
.75 Spray
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Soil Analysis Report (Required)
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• Submitted with Certificate of Completion if grading permit is required
• Submitted with Landscape Documentation Package if no grading permit is required
• Analysis must include: Soil texture, Infiltration rate, pH, total soluble salts, sodium, % organic matter, and recommendations
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Landscape Design Plan• Prior to the planting, compacted soils must be
transformed to a friable condition (only amended planting holes on engineered slopes)
• Amendments incorporated per soil analysis report
• Incorporate compost to min depth of 8”at min rate of 6 cubic yds./1,000 sqft (soils with greater than 6% organic matter in the top 6” of soil exempt)
• 3” layer of mulch required• Designated insect habitat can be unmulched (</5% of landscape)
• Very low, low, and moderate H20 plants can be mixed on same valve (high H20 on separate valves) • Plant factors obtained from WUCOLS or research from
academia/nurseries as approved by DWR
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Landscape Design Plan• No turf in
• Slopes >10%
• Areas 8’ wide or less
• Street medians, traffic islands, planter strips or bulbouts of any size
• Invasive plants prohibited
• Identify location/details of rainwater/graywater/stormwater features
• Water features
• Recirculating water systems required
• Recycled water used when available
• Surface area of water feature included in the high water use hydrozone area of the water budget calculation
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Irrigation Design Plan• Dedicated irrigation meter or submeter required
• Landscapes >/5,000 sqft require a high-flow sensor and master valve
• Isolation valves must be installed at the POC and before each valve or valve manifold
• Weather-based or sensor based self-adjusting irrigation controllers utilizing non-volatile memory required
• Rain sensors required for each controller
• Components must operate at the manufacturer’s recommended optimal pressure
• System designed to prevent runoff or overspray onto nontargeted areas
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Irrigation Design Plan• Point source irrigation required where plant height at maturity
will block throw of sprayheads
• Min 24” setback of overhead irrigation is required where turf is directly adjacent hardscape that flows into the curb and gutter
• Slopes >15% must be irrigated with point source or low-volume irrigation
• Valve can not mix high water use plants with moderate, low, or very low water use plants
• Trees on separate valves except when planted in turf areas
• Matched precipitation rates required
• Head to head coverage is required
• Swing joints and check valves required21
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Grading Design Plan
• Grading design plan required on slopes >10%
• Must contain following statement:
• “I have complied with the criteria of the ordinance and applied them accordingly for the efficient use of water in the grading design plan” and shall bear the signature of a licensed professional as authorized by law.”
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Documentation for Compliance
• Step 1: Final Design Review• Submit following documentation to the City
• Soil analysis report and documentation verifying implementation of soil report recommendations
• Completed MAWA
• Landscape design plan
• Conceptual irrigation design plan or statement which describes irrigation methods and design actions that will be employed to meet the irrigation specifications
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Documentation for Compliance
• Step 2: Building Permit/Plan Check• Reviewed/approved before permit issued
• MAWA and planting design as submitted at Step 1
• Irrigation design plan drawn at the same scale as the landscape design plan
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Documentation for Compliance
• Step 3: Completion of Installation• Submit Irrigation Audit that includes
• Operating pressure
• Distribution uniformity of overhead irrigation
• Precipitation rate of overhead irrigation
• Report of any overspray or broken irrigation equipment
• Irrigation schedule
• Verification that a diagram of the irrigation plan showing hydrozones is kept with the irrigation controller
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Documentation for Compliance
• Step 3: Completion of Installation• Audits must be conducted by Certified
Landscape Irrigation Auditor
• Qualified Water Efficient Landscaper: http://www.qwel.net
• Irrigation Association Certified Landscape Irrigation Auditor (CLIA) http://www.irrigation.org/
• California Landscape Contractors Association (Certified Water Manager) http://clca.org
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Documentation for Compliance
• Step 3: Completion of Installation• Submit Irrigation Maintenance Schedule
timeline submitted that includes
• Routine inspections
• Adjustments/repairs
• Aerating/dethatching
• Replenishing mulch
• Fertilizing, pruning, weeding
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Documentation for Compliance
• Step 3: Completion of Installation• Final Inspection performed by City staff
• Advance notice required
• Morning or afternoon appointments
• Building permit final not completed until landscape inspection is approved
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Documentation for Compliance
Submit plans in
compliance with
ordinance
Agency plan review
Pass Installation
Completion Package
submitted to Agency
Final Inspection
Fail
Fail
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Resources
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•www.srcity.org/welo
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Questions?
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