Term
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Definition
| 340 billion gallons of h2o a day are withdrawn from bodies of water, 65% discharged, efficiency measures can easily reduce water usage by 30% or more |
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Term
| Credit 1.1 Water Efficient Landscaping-reduce by 50%- intent |
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Definition
| limit or eliminate the use of potable water, or other natural surface or subsurface water resources available on or near the project site, for landscape irrigation. |
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Term
| Credit 1.1 Water Efficient Landscaping-reduce by 50%-requirements |
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Definition
| reduce potable water consumption for irrigation by 50% from a calculated mid-summer baseline case through: plant species factor, irrigation efficiency, use of captured rainwater, use of recycled wastewater, use of water treated and conveyed by a public agency specifically for non-potable uses. |
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Term
| Credit 1.2 Water Efficient Landscaping-no potable water use or no irrigation- intent |
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Definition
| eliminate the use of potable water, or other natural surface or subsurface water resources available on or near the project site, for landscape irrigation. |
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Term
| Credit 1.2 Water Efficient Landscaping-no potable water use or no irrigation-requirements |
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Definition
achieve WE Credit 1.1 and use only captures rainwater, recycled wastewater, recycled graywater, or water treated and conveyed by a public agency for non-potable uses for irrigation.
OR
install landscaping that doesn't require permanent irrigation, temporary irrigation must be removed within one year of installation |
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Term
| Credit 1 Water Efficient Landscaping- Implementation |
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Definition
| 1. Planning: site map with topography, sun, wind, shade, reduce heat island effect, plan water zones- high, medium, low. |
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Term
| Credit 1 Water Efficient Landscaping- Implementation |
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Definition
2. Practical turf grass for functional use.
3. soil analysis
4. choose plants that will adapt to site, diverse species |
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Term
| Credit 1 Water Efficient Landscaping- Implementation |
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Definition
5. Effective and efficient watering: regularly check irrigation systems, use drip and micro misters, no irrigation of plants and turf from november to april, no irrigation of shrubs from september to june
6. mulch to retain moisture |
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Term
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Definition
| wastewater from sinks, showers, washing machines, ac, etc that does not involve human waste or food processing |
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Term
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Definition
| metal, clay, concrete containers best- asphalt or lead-containing material will contaminate water |
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Term
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Definition
| through the use of high efficiency irrigation equipment, captured rainwater, recycled graywater, or treated wastewater |
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Term
| Credit 1 Water Efficient Landscaping- calculations |
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Definition
| based on irrigation during the month of july; landscape coefficient, species factor, density factor, microclimate factor |
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Term
| Credit 1 Water Efficient Landscaping- calculations |
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Definition
Steps:
1. Create Design Case
2. Create Baseline Case- initial landscape
3. Calculate Percent Reduction in Total Irrigation H2O Use (Potable and Reuse) AND percent Reduction of Potable Water Use for Irrigation
If % reduction of potable water is equal to or greater than 50%, WE credit 1.1 is earned.
If Percent Reduction of potable water is 100% and the percent reduction of total water is equal to or greater than 50% We credit 1.2 is earned in addition to 1.1 |
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Term
| Credit 1 Water Efficient Landscaping- submittal |
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Definition
Design Submittal:
1. Baseline Total Water Applied
2. Design Total Water Applied
3. total non-potable water supply available for irrigation
4. narrative describing landscape and irrigation design strategies |
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Term
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Definition
| a measurement of the total amount of water needed to grow a certain reference plant |
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Term
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Definition
| in calculations: listing the type of irrigation used for each landscape area and the corresponding efficiency |
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Term
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Definition
| total site area less the building footprint, paved surfaces, water bodies |
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Term
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Definition
| irrigation system with small sprinklers, micro jets, or drippers- more efficient watering 95% efficient for drippers and in ground |
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Term
| Credit 2 Innovative Wastewater Technologies-intent |
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Definition
| reduce generation of wastewater and potable water demand,(waterclosets and urinals) while increasing the local aquifer recharge. |
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Term
| Credit 2 Innovative Wastewater Technologies-requirements |
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Definition
Option 1: reduce potable water use for building sewage conveyance by 50% through the use of water-conserving fixtures or non-potable water.
Option 2: treat 50% of wastewater on-site to tertiary (highest filtration) standards, treated water must be infiltrated or used on site. |
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Term
| Credit 2 Innovative Wastewater Technologies-strategy |
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Definition
| high-efficiency or dry fixtures such as composting toilet systems and non-water using urinals; reuse stormwater or graywater; on-site water treatment |
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Term
| Credit 2 Innovative Wastewater Technologies-calculations |
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Definition
FTE occupancy, transient occupancy, water use for each fixture separately for each occupancy type, spreadsheet with each blackwater generating fixture and use, sum sewage generation volumes, male and female sewage volumes, annual workday sewage amount, subtract rainwater harvest or graywater use from sewage generation volume, graywater and rainwater=water closet use; baseline case, annual rainwater harvest volume.
option 2: same as above, but divide annual volume of wastewater that is treated or reused by annual sewage amount to get % reduction of wastewater |
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Term
| Credit 2 Innovative Wastewater Technologies-exemplary performance |
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Definition
| 100% reduction in potable water use for sewage conveyance, OR on-site treatment and re-use/infiltration of 100% generated wastewater= considered for one additional point |
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Term
| Credit 2 Innovative Wastewater Technologies-submittal |
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Definition
| Design Submittal: sewage/plumbing drawings, all calculations and a narrative describing the reclaimed water systems, potable water reduction, or on-site treatment to tertiary standards |
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Term
| Credit 2 Innovative Wastewater Technologies-issues |
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Definition
| reducing potable water use, local aquifer is conserved as a water resource for future generations |
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Term
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Definition
| no single nationwide definition, wastewater from toilets and urinals is always considered blackwater |
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Term
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Definition
| from kitchen sinks, showers, or bathtubs may be considered blackwater by state or local codes, must comply with standards of blackwater set by jurisdiction of authority of site |
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Term
| composting toilet systems |
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Definition
| dry plumbing fixtures that contain and treat human waste via microbiological processes |
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Term
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Definition
| household wastewater that has not come in contact with toilet waste; does not include water from kitchen sinks or dishwashers in some areas, in others it does |
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Term
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Definition
| not suitable for human consumption without treatment that meets EPA drinking water standards |
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Term
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Definition
| water suitable for drinking, from wells or municipal water systems |
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Term
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Definition
| used for industrial processes, cooling towers, boilers, chillers |
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Term
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Definition
| highest form of water treatment, removal of nutrients, organic and solid material, biological or chemical polishing |
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Term
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Definition
| no water, specially designed trap that contains a layer of buoyant liquid that floats above urine, blocking sewer gas and odors |
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Term
| Credit 3.1 Water Use Reduction-20% Reduction-intent |
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Definition
| maximize water efficiency within buildings to reduce the burden on municipal water supply and wastewater systems |
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Term
| Credit 3.1 Water Use Reduction-20% Reduction-requirements |
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Definition
| use 20% less water than the water use baseline calculated for the building (not including irrigation) after meeting the Energy Policy Act of 1992 fixture performance requirements. calcs are based on estimated occupant usage and shall include water closets, urinals, lavatory faucets, showers, and kitchen sinks |
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Term
| Credit 3.2 Water Use Reduction-30% Reduction-intent |
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Definition
| maximize water efficiency within buildings to reduce the burden on municipal water supply and wastewater systems |
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Term
| Credit 3.2 Water Use Reduction-30% Reduction-requirements |
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Definition
| use 30% less water than the water use baseline calculated for the building (not including irrigation) after meeting the Energy Policy Act of 1992 fixture performance requirements. calcs are based on estimated occupant usage and shall include water closets, urinals, lavatory faucets, showers, and kitchen sinks |
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Term
| Energy Policy Act (EPA) of 1992 |
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Definition
by US government, addresses energy and water use in commercial, institutional, and residential facilities.
water closets-1.6 gpf
urinals- 1.0 gpf
showerheads- 2.5 gpm
faucets- 2.5 gpm
replacement aerators- 2.5 gpm
metering faucets- .25 gal/cy
gpm-gallons per minute
gpf- gallons per flush |
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Term
| Credit 3 Water Use Reduction- calculations |
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Definition
EPAct numbers as a baseline, water use calculation based on occupant usage (FTE and transient calculated separately) and fixture flow rates.
design case: total annual volume of each fixture type minus any reuse of graywater/stormwater;
differentiate b/w men and women
baseline case: fixture flush/flow rates set to EPAct standards |
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Term
| Credit 3 Water Use Reduction- exemplary performance |
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Definition
water savings of 40% = 1 credit
potable water use reduction in process and non-regulated water consuming fixtures: compared to regulated water use, if savings is at least 10% if total design regulated water use= ID point consideration |
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Term
| Credit 3 Water Use Reduction- submittal |
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Definition
| Design Submittal- calculations using templates: occupants, design case water usage, baseline water usage, total non-potable water supply available for sewage conveyance purposes, and narrative describing potable water strategies |
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Term
| Credit 3 Water Use Reduction- issues |
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Definition
| applies throughout water section: local weather conditions should be factored into feasibility of rainwater harvesting systems, local health codes and ordinances vary for graywater and alternative plumbing fixtures- must contact code officials before employing strategies, treated water must be acceptable as to not compromise fixture use in long-term performance |
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Term
| automatic fixture sensors/metering controls |
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Definition
| motion sensors/off controls that limit flow time of water |
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