Leed 2.2 - W.e. Water Efficency

Front 1

WE 1.1 Water Efficient Landscaping: Reduce by 50%


What is Intent

Back 1

Limit or eliminate the use of potable water, or other natural surface or subsurface water resources near or on project, for irrigation.

Front 2

WE 1.1 Water Efficient Landscaping: Reduce by 50%


What are requirements?

Back 2

Reduce potable water concumption for irrigation by 50% using:

Landscape coefficent (Kl)
Irrigations effieciency (IE)
Project specifice evapotranspiration (ETL)
Use of Captured rainwater
Use of recycled wastewater
Use of water treated & conveyed by a public agency soecifically for non-potable uses

Front 3

WE 1.2 Water Efficient Landscaping: No Potable Water Use or No Irrigation


Requirements?

Back 3

No Potable water use
AND
Use only captured water, recycled wastewater, recy. graywater, or water treated for special use of irrigation
OR
Install landscaping that doesn't require perm. irrigation

Front 4

WE 1.1-1.2 Water Efficent Landscaping

Technolgies and Strategies?

Back 4

*Perform Soil/climate analysis to determine native/adapted plants to use.
*Use high efficecy irigation stategies
*Use drip systems (30-50% less water than sprinklers)

Front 5

WE 1.1-1.2 Water Efficent Landscaping


Submittals?

Back 5

The projects calculated baseline Total Water Applied (TWA) (gal.)

Baseline Case TWA (gal) = Area (Sf) X (ET(in/IE) X .6233 gal/sf/in.

Front 6

WE 2 Innovative Wastewater Technologies


Intent?

Back 6

Reduce generation of wastewater and potable water demand,while increasing the local aquifer recharge

Front 7

WE 2 Innovative Wastewater Technologies


Requirements - Option 1?

Back 7

Reduce potable water use for building sewage conveyance by 50%. (water conserving plumb. fixtures, urinal, captured rainwater, graywater)

Front 8

WE 2 Innovative Wastewater Technologies


Requirements - Option 2?

Back 8

Treat 50% of wastewater on site to teriary standards AND
Treated water must be infiltrated or used-on-site

Front 9

WE 2 Innovative Wastewater Technologies


Exemplary Performance

Back 9

*Zero Use f potable water in sewage conveyance

*100% on-site treatment and reuse/infiltration of wastewater

Front 10

WE 2 Innovative Wastewater Technologies


Technologies and Strategies?

Back 10

*Specfy. high effiency fixures, dry fixtures (composting toilets)
*Reuse sotrmwater or graywater
*Options for w.w. treatment incl. Packaged biological nutrient removal, constructed wetlands, h.effc. filtration systms.

Front 11

WE 2 Innovative Wastewater Technologies


Submittls? Basic Assumption1?

Back 11

*Plumb. Construct. dwgs
*Calc. Basic Assumption
Female 1: Male 1 or
Project specific ratio
Gallon per flush (GPF)
WClost 1.6, Urinal 1.0

Daily use:
WC male: 1
Urinal male: 2
Wcloset female: 3

Front 12

WE 2 Innovative Wastewater Technologies

Submittals.continued
Calculation: Basic Assump.2?

Back 12

Fixture GPF
Conv. WCloset 1.6
Low flow Wcloset: 1.1
Ultra low flow Wcloset: 0.8
Compst. toilet: 0.0
Conv. Urinal: 1.0
Waterless Urinal: 0.0

Front 13

WE 2 Innovative Wastewater Technologies

Submittals.continued
3 equations: Basic Assump.2?

Back 13

Eq. 1 Sewage colume (gal) = Uses x Duration (flushes/min.) xWater volume/Use (flush/min.)

or Eq. 2 Daily sewage generation (gal)= Male occupants x male Sewage Generation (Gal) + Female occupants x Female Seage Generation (gal)

Front 14

WE 3 Water Use Reduction


Intent? Ref. Stndrd?

Back 14

Maximize water efficiency within buildings to reduce the burden on municipal water supply and wastewater systems.

Ref: Energy Policy Act (EPAct) of 1992 -- Deals with Water!!!

Front 15

WE 3.1 Water Use Reduction: 20% reduction


Requirements?

Back 15

Employ strategies that in aggregate use 20% less water then the water use baseline for the bldg. after meeting EPAct fixt. perf. requmnts.

-Don't include Irrigation
-include: Wclosets, urinals, lavoratory faucets, showers, kitchen sinks.

Front 16

WE 3.2 Water Use Reduction: 30% reduction


Requirements?

Back 16

Employ strategies that in aggregate use 30% less water then the water use baseline for the bldg. after meeting EPAct fixt. perf. requmnts.

-Don't include Irrigation
-include: Wclosets, urinals, lavoratory faucets, showers, kitchen sinks.

Front 17

WE 3.2 Water Use Reduction: 30% reduction


Exempllary Performance

Back 17

Reduce water consumptin by at least 40%

OR Ptable water use reduction in process and non-regulated water consuming fixtures by at least 10%.

Front 18

WE 3.2 Water Use Reduction: 30% reduction


Submittals?

Back 18

*Number of Bldg. Occupants
*Project design case
*Project claculated baseline
*Non-potable water use
*Narrative