LEED GA Sessions1 2 1

LEED Green AssociateExam Review Course - 2011

Instructor:

Jeff VincentLEED AP

SESSION

ONE

REVIEW COURSE OVERVIEW, LOGISTICS

LEARNING OBJECTIVES

WHAT TO EXPECT

WHY BUILD GREEN & INTRODUCTION TO USGBC AND LEED

EXAM & CREDENTIALING OVERVIEW

- BREAK -

The purpose of this review course is

to help YOU to study effectively in

order that you will be successful

and pass the exam.

LEED

LEED GA REVIEW COURSE

WHAT TO EXPECT

ADVICE FROM LEED ACCREDITED PROFESSIONALS

ADDITIONAL MATERIALS AND STUDY RESOURCES

STUDY TIPS

ACCESS TO PRACTICE QUESTIONS AND ANSWERS

OPEN DISCUSSION – ASK QUESTIONS

REVIEW ALL SECTIONS OF LEED REFERENCE GUIDE

EXAM OVERVIEW

WHAT NOT TO EXPECT

TO REGISTER COMPLAINTS ABOUT USGBC MATERIALS OR WEBSITE

DISCUSSION OR DEBATE ABOUT RECENT LEED/USGBC/GBCI INITIATIVES AND ISSUES

TO GET ANYTHING OUT OF THE REVIEW SESSION WITHOUT READING THE MATERIAL

TO PASS THE EXAM WITHOUT INVESTING ANY SIGNIFICANT PREPARATION TIME

ANY ANSWERS TO THE EXAM

Exam Overview

LEED GREEN ASSOCIATEOPTION A - Documented involvement on a LEED-registered project. OPTION B - Employment (or previous employment) in a sustainable field of work. OPTION C - Engagement in (or completion of) an education program that addresses green building principles.

AND Successful completion of the LEED Green Associate Exam.

LEED APA. Agree to the Disciplinary and Exam Appeals Policy and Credentialing Maintenance Program (CMP).B. Document professional experience on a LEED project, within the last 3 years, with verification through LEED Online or employer attestation. C. Submit to application audit. 5%-7% of all applications will be audited

AND Successful Completion of LEED Specialty Exam in one of the following:

• Building Design + Construction (BD+C)• Interior Design + Construction (ID+C)• Homes• Neighborhood Development (ND)• Operations + Maintenance (O+M)

** You can sit for both exams concurrently.

LEED FELLOWHave your AP for 8 yearsProve over 10 yrs in the green industryNomination and vetting process in stages

CREDENTIALING MAINTENANCE PROGRAM (CMP) REQUIREMENTS:

LEED GREEN ASSOCIATE:15 Hours (3 LEED Specific), Every 2 years

LEED AP WITH SPECIALTY30 hours (6 LEED Specific), every 2 years

LEED FELLOWnone

STEPS TO THE G.A. EXAM

3. REGISTER FOR & SCHEDULE YOUR EXAM

2. STUDY & PREP – USE REFERENCE GUIDES & DOCS IN THE HANDBOOK AS STUDY AIDS

1. READ THE GBCI G.A. CANDIDATE HANDBOOK

GREEN ASSOCIATE EXAM

•100 randomly selected, multiple choice questions

• 2 hours to take exam (exam tutorial not included in time limit)

•Score Range is 125-200, 170 is minimum passing score

ACCREDITED PROFFESIONAL SPECIALTY EXAM

• 100 randomly selected, multiple choice questions

• 2 hours to take exam (exam tutorial not included in time limit)

• Score range is 125-200, 170 is minimum passing score

NOTE **Both exams may be taken together, you will have 4 hours to complete them both. There is no scheduled break between exams, although you may leave the exam room, but your time will not stop. If you pass one part of the exam and not the other, you are only required to re-take the part of the exam that you did not pass.

WHAT TO BRING?

•Two forms of ID

•Nothing Else!

•Pencil and scratch paper will be provided

ANALYSIS QUESTIONS:Test reasoning and problem-solving, demonstrating understanding of how

things work,

APPLICATION QUESTIONS:tests knowledge of procedures and performances, how things work, calculations, formulas, order of steps in processes, and process

application

RECALL QUESTIONS: tests direct knowledge of concepts, e.g. definitions, facts, processes

and synergies

EXAM QUESTION TYPES

• Test attempts to apply application of knowledge to actual situations involved in certifying a LEED project

• Know submittal documentation requirements for credits

• Know reference standards thoroughly for each credits/prerequisite

• Be knowledgeable about calculation methodology, but will not be required to perform actual calculations

• Must be familiar with multiple credits to answer single question

• Understand certification process including review, fees, etc.

• Practice exam/questions to test knowledge but do not expect exam questions to be similar

WHAT TO STUDY MATERIALS + RESOURCES

Green Building & LEED Core Concepts, 1st Edition www.usgbc.org/resources>Publications

Candidate Handbookhttp://www.gbci.org/main-nav/professional-credentials/candidate-handbooks.aspx

LEED V3 Reference Guide www.usgbc.org/resources>Publications

Studio 4 FREE study guide

PPI - www.ppi2pass.com

LEED Certification Process www.usgbc.org/leed>LEEDCertification

LEED Online www.usgbc.org/leed>LEED-Online

LEED Credit Templates www.usgbc.org/leed>LEEDRatingSystems

LEED Credit Interpretation Process www.usgbc.org/leed>CIR

LEED NC Technical Workshop www.usgbc.org/education>workshops

LEED Essentials for Professional Accreditation (Online Course) www.usgbc.org/education>OnlineCourses

LEED GA/APRESOURCES

The Triple Bottom Line

EN

VIR

ON

ME

NT

ECONOMICSPEOPLE

Reduced Environmental Impact.Peak Efficiency.Improved Capitalization Rates.Increased Marketability.Higher Lease Rates.Improved Productivity.Reduced Absenteeism.

WHO WE ARE

USGBC is a community of leaders working to transform

the way buildings and communities are

designed, built, and operated. We promote buildings that are:

ENVIRONMENTALLY RESPONSIBLE

ECONOMICALLY PROFITABLE

HEALTHY PLACES TO LIVE, WORK, TEACH AND LEARN

USGBCUSGBC

Architects

BuildingOwners

Planners

Federal,Local,and State Governments

UtilityManagers

Nonprofit Leaders

Engineers

BuildingTenants

PropertyManagers

ProductManufacturers

InteriorDesigners

CodeOfficials

LandscapeArchitects

FinancialPlanners

Each Chapter is made up of even more local Branches – find yours!

Introduction

LEED Reference Guide

User’s Manual for LEEDDefines criteriaExamples of strategiesNot exhaustive

Contents of Reference GuidePrerequisites and CreditsRequired SubmittalsReferenced StandardsGreen Building ConcernsDesign ApproachSynergies & Trade-OffsCalculationsAdditional ResourcesCase Study

INTEGRATIVE APPROACH

• Whole Team: Owner, User Group, Architect, Engineers, GC, Facilities/Maint. Staff

• Whole Process: – Pre-design– Design (all phases)– Bidding– Construction (all phases)– Occupancy

LEADERSHIP inENERGY andENVIRONMENTALDESIGN

A leading-edge system for certifyingDESIGN, CONSTRUCTION, & OPERATIONSof the greenest buildings in the world

Scores are tallied for different aspects of

efficiency and design in appropriate

categories.

Standard categories:

1. Site Planning2. Water Management3. Energy Management4. Material Use5. Indoor Environmental Air Quality6. Innovation & Design Process

System-Specific Categories

7. Location & Linkages8. Awareness & Education9. Smart Location & Linkages10. Neighborhood Pattern & Design11. Green Infrastructure & Buildings

EACH CREDIT CATEGORY

Population Energy Consumption

United StatesOther G7 countriesRest of the world

5%

88%

7%

25%

19%

56%

Portland Cement Association

Population vs. Consumption

30-70% ENERGY SAVINGS

HOW CAN LEED HELP?

VERIFIEDPERFORMANCE

INCREASEDVALUE

REDUCEDLIABILITY &IMPROVED

RISKMANAGEMENT ENHANCED

PRODUCTIVITY

7. MUST COMPLY WITH MINIMUM BUILDING AREA TO SITE RATIO: Gross floor area no less than 2% of gross land area within LEED

boundary

6. MUST COMMIT TO SHARING WHOLE BUILDING ENERGY & WATER USAGE DATA

1. MUST COMPLY WITH ALL ENVIRONMENTAL LAWS

MINIMUM PROGRAM REQUIREMENTS

5. MUST COMPLY WITH MINIMUM OCCUPANCY RATES

4. MUST COMPLY WITH MINIMUM FLOOR AREA REQUIREMENTS: Min. 1000 SF except for CI = 250 SF

3. MUSE USE A REASONABLE SITE BOUNDARY

2. MUST BE A COMPLETE, PERMANENT BUILDING OR SPACE

WHEN TO USE EACH SYSTEM

LEED – NCLEED FOR NEW CONSTRUCTION AND

MAJOR RENOVATIONS

PURPOSE•Define and measure “Green Building”•Prevent “Green washing”•Evaluate environmental performance from

whole-building perspective

HISTORY•LEED 1.0 Pilot Program (August, 1998)•LEED 2.0 (March, 2000)•LEED 2.1 (May, 2003) •LEED 2.2 (November, 2005)•LEED V3 (April 2009)

CONTINUOUS IMPROVEMENT PROCESS•Review rating system and reference guide

every 3 years•Steering Committee, Product Committees,

Technical Advisory Groups (TAGs)

LEED version at time of registration is maintained throughout certification.

LEED RATING SYSTEM

CERTIFICATION LEVELS

CERTIFIED 40 – 49 POINTS

POINTS REQUIRED TO MEET CERTIFICATION LEVELS

SILVER 50 – 59 POINTS

GOLD 60 – 79 POINTS

PLATINUM 80 + POINTS

TOTAL OF 110 POINTS AVAILABLE

ALL PREREQUISITES MUST BE MET

Sustainable Sites

Efficient Water Use

Energy & Atmosphere

Materials & Resources

Innovation

Up to 10 additional credits

Innovation: 1~5 Credits

LAP: 1 Credit

Regional: 1~4 Credits

END OF SESSION ONE BREAK TIME

SESSION

TWO

SUSTAINABLE SITES

LEARNING OBJECTIVES

WATER EFFICIENCY

- END OF SESSION -

Sustainable Sites

• 29% of LEED Points

• Maintain/enhance local ecology

• Mimic ecological features

• Minimize heat absorption

• Minimize the need for additional infrastructure

• Minimize the vehicle use

• Reduce encroachment on agricultural land areas

• Stormwater run off issues

• Water quality

• Impact on undeveloped lands

• Improve previously contaminated sites

SUSTAINABLESITES

OVERVIEW

1 PREREQUISITE8 CREDIT CATEGORIES26 POSSIBLE POINTS

GREEN BUILDING CONCERNS

Where do we put the building to reduce impacts?

• Avoid natural areas or protected habitats

• Build in already-developed areas

• Take advantage of public transportation

How do we protect the site?

• Minimize the footprint

• Limit construction disturbances and plan restoration

• Limit stormwater runoff and erosion

• Reduce heat islands and light pollution

SUSTAINABLESITES

OVERVIEW


INTENTReduce pollution from construction activities by controlling soil erosion, waterway sedimentation and airborne dust generation.

SUSTAINABLESITES

SS PREREQUISITE ICONSTRUCTION ACTIVITY POLLUTION PREVENTIONREQUIRED FOR CERTIFICATION

REQUIREMENTS Prevent loss of soil by runoff or wind Protecting stockpiled topsoil Prevent sedimentation of storm sewers or streams Prevent air pollution

Site-specific sediment and erosion control plan

Temporary and permanent seeding Structural control measures include earth dikes, silt fencing, sediment and traps & basins

Meet EPA or local codes (whichever is more stringent)

National Pollutant Discharge Elimination System (NPDES)

SUSTAINABLESITES

SS CREDIT ISITE SELECTIONI POINT AVAILABLE

INTENTAvoid development of inappropriate sites and reduce the environmental impact from the location of the building on the site.

REQUIREMENTSDo not develop: Prime farmland Previously undeveloped land lower than 5’ above the FEMA 100 year flood plain

Endangered species habitats Within 100 feet of wetlands or per local laws if more stringent

Previously undeveloped land that is within 50’ of a water body

Public parkland, unless a land trade is accepted

REFERENCED STANDARDS USDA’s definition of Prime Farmland FEMA 100 year flood plain US Fish and Wildlife, Marine Fisheries and local

endangered species lists Wetlands definitions

SUSTAINABLESITES

SS CREDIT 2DEVELOPMENT DENSITY AND COMMUNITY CONNECTIVITY5 POINTS AVAILABLE

INTENTChannel development into urban areas with existing infrastructure, protect greenfields, and preserve habitat and natural resources.

REQUIREMENTSOption 1: Development Density Increase localized density Existing density of 60,000 SF per acre Two story downtown development with covered parking

OROption 2 – Community ConnectivityConstruct or renovate a building on: A previously developed site Within a ½ mile of a residential zone or neighborhood w/ average density of 10 units/acre within ½ mile of 10 or more basic services with pedestrian access between buildings and services.

REFERENCED STANDARDS USDA’s definition of Prime Farmland FEMA 100 year flood plain US Fish and Wildlife, Marine Fisheries and local

endangered species lists Wetlands definitions

SUSTAINABLESITES

SS CREDIT 2DEVELOPMENT DENSITY AND COMMUNITY CONNECTIVITY5 POINTS AVAILABLE

REQUIREMENTS (continued…)

Development Density = Gross Building Area ÷

Project Site Area

Density Radius = 3 x √(property area)

Proximity is determined by drawing a ½ mile radius

around the main building entrance on a site map

and counting the services with in that radius. (Radii

can be drawn around more than one building or

main entrance).

21 services listed as examples.

SUSTAINABLESITES

SS CREDIT 3BROWNFIELD REDEVELOPMENTI POINT AVAILABLE

INTENTRehabilitate damaged sites where development is complicated by environmental contamination, thereby reducing pressure on undeveloped land.

REQUIREMENTSDevelop sites that have: Documented Phase II Environmental Site Assessment

OR Governmental Agency documented Brownfield

INTENT OF CREDIT Remove hazardous materials – remediation work

must be performed. Social and economic revitalization Includes rehab of existing buildings

SUSTAINABLESITES

SS CREDIT 4.IALTERNATIVE TRANSPORTATION: PUBLIC TRANSPORTATION ACCESS6 POINTS AVAILABLE

INTENTReduce pollution and land development impacts from automobile use.

REQUIREMENTSProximity to mass Transit: Within ½ mile of an existing (or planned and funded) commuter, light rail or subway station

Within ¼ mile of 2 or more public or campus bus lines

Show pedestrian routeroute not radius Exemplary Performance: demonstrate a quantifiable reduction in personal automobile use

through multiple alternative options

SUSTAINABLESITES

SS CREDIT 4.2ALTERNATIVE TRANSPORTATION: BICYCLE STORAGE AND CHANGING ROOMSI POINT AVAILABLE


REQUIREMENTSCommercial/Institutional: Provide secure bicycle racks and/or storage (within

200 yards of a building entrance) for 5% of

occupants (determine peak users) and provide

shower/changing facilities for .5% of FTE occupants

OR Residential: For 15% of building occupants, in lieu of changing facilities

FTE = total occupant hours/8

EXEMPLARY PERFORMANCE Provide a comprehensive transportation management plan

SUSTAINABLESITES

SS CREDIT 4.3ALTERNATIVE TRANSPORTATION: LOW EMISSION AND FUEL EFFICIENT VEHICLES3 POINTS AVAILABLE


REQUIREMENTSOption 1Provide preferred parking for low-emitting and fuel efficient vehicles for 5% of total vehicle parking capacity.

Option 2Install alternative-fuel refueling stations for 3% of the total vehicle parking capacity of the site.

Option 3Provide low-emitting and fuel-efficient vehicles for 3% of full-time equivalent (FTE) occupants.

Option 4Provide building occupants access to a low-emitting or fuel-efficient vehicle-sharing program.

REQUIREMENTSCASE 1: Non-Residential ProjectsOption 1 Must not exceed local zoning requirements Provide preferred parking for carpools/vanpools

serving 5% of occupants

Option 2 (for projects that provide parking for < 5% of FTE building occupants)

Provide preferred parking for carpools/vanpools

serving 5% of occupants

Option 3 Provide no new parking.

CASE 2: Residential ProjectsOption 1 Must not exceed local zoning requirements.

Option 2 Provide no new parking.

SUSTAINABLESITES

SS CREDIT 4.4ALTERNATIVE TRANSPORTATION: PARKING CAPACITY2 POINTS AVAILABLE



CASE 3: Mixed-Use ProjectsOption I < 10% commercial – use residential > 10% split requirements

ALL CASESAppendix 1 Default Occupancy Count Guidelines.

CASE 2: Residential ProjectsOption 1 Meet MINIMUM local zoning requirements Provide infrastructure and support programs to

facilitate shared vehicle use (carpool drop off

areas, parking for vanpools, car sharing…)

SUSTAINABLESITES

SS CREDIT 4.4ALTERNATIVE TRANSPORTATION: PARKING CAPACITY2 POINTS AVAILABLE

REQUIREMENTSGreenfield sites: Limit site disturbance

40’ beyond building perimeter 15’ beyond primary roadway curbs 25’ beyond permeable constructed areas 10’ beyond surface walkways, patios, parking, utilities <12” in diameter

OROn previously developed sites: Restore 50% of site area (excluding footprint) or 20%

of the total site area (including footprint), whichever

is greater, with native/adapted vegetation

EXEMPLARY PERFORMANCE Restore or protect ≥75% of the site (excluding the building footprint) with native or adaptive vegetation on previously graded or developed sites

SUSTAINABLESITES

SS CREDIT 5.ISITE DEVELOPMENT: PROTECT OR RESTORE HABITATI POINT AVAILABLE

INTENTConserve existing natural areas and restore damaged areas to provide habitat and promote biodiversity.

REQUIREMENTSCASE I Reduce the development footprint (building,

access roads, parking) and exceed local zoning

open space requirement by 25%

CASE 2 (for areas with no local zoning code) Provide open space equal to the development

footprint (owner must state that open space will be

conserved for building’s life)

CASE 3 (for sites with zoning but no requirement for open space)

Provide vegetated open space ≥ 20% of the site area.

SUSTAINABLESITES

SS CREDIT 5.2SITE DEVELOPMENT: MAXIMIZE OPEN SPACEI POINT AVAILABLE

INTENTProvide high ratio of open space to development footprint to promote biodiversity.

REQUIREMENTS For projects located in an urban area that earn SS

Credit 2, vegetative roofs can contribute to credit

compliance. For projects located in an urban area that earn SS

Credit 2, pedestrian-oriented hardscapes can

contribute to credit compliance as long as 25% of the

open space is vegetated. Wetlands or naturally designed ponds may count as

open space if the side slope gradients average 1:4

(v:h) or less and are vegetated.

EXEMPLARY PREFORMANCEDouble open space standard

SUSTAINABLESITES

SS CREDIT 5.2SITE DEVELOPMENT: MAXIMIZE OPEN SPACEI POINT AVAILABLE

REQUIREMENTSOption 1: Existing imperviousness ≤50%Implement a stormwater management plan that prevents the post-development peak discharge rate and quantity from exceeding the pre-development peak discharge rate and quantity for the 1 and 2 year, 24 hour design storms.

OR

Option 2: Existing imperviousness ≥50%Implement a stormwater management plan for 25% DECREASE in volume of runoff from the 2 year, 24 hour design storm.

SUSTAINABLESITES

SS CREDIT 6.ISTORMWATER DESIGN: QUANTITY CONTROLI POINT AVAILABLE

INTENTLimit disruption of natural hydrology by reducing impervious cover, increasing on-site infiltration, managing stormwater runoff, and eliminating contaminants.

IMPACTS FROM URBANIZATION

REQUIREMENTSImplement a stormwater management plan that:

Reduces impervious cover Promotes infiltration Captures and treats runoff from 90% of the average annual rainfall using acceptable best management practices (BMP).

BMPs used to treat runoff must:Remove 80% of post-development total suspended solids (TSS) Meet local standards Use an in-field performance monitoring system

SUSTAINABLESITES

SS CREDIT 6.2STORMWATER DESIGN: QUALITY CONTROLI POINT AVAILABLE

INTENTLimit disruption and pollution of natural water flows by managing stormwater runoff

REQUIREMENTS (continued…)Non- structural Measures: Capture and treat using natural methods. Vegetation, swales, disconnection of impervious areas

Structural measures: Rainwater cisterns Manhole treatment devices Reuse for irrigation Reuse in a gray water system

CALCULATIONS Determine average annual rainfall Non-Structural: determine filtration rates Structural: confirm equipment capacity Combination

SUSTAINABLESITES

SS CREDIT 6.2STORMWATER DESIGN: QUALITY CONTROLI POINT AVAILABLE

REQUIREMENTSOption 1For 50% of non-roof impervious surfaces provide any combination of:

Shade from existing tree canopy or within 5 years of

landscape install Shade from structures covered by solar panels

Shade from structures having a Solar Reflectance

Index (SRI) of at least 29. Pave with materials having a Solar Reflectance Index

(SRI) of at least 29. Open-grid paving

Option 2 Place 50% of parking under ground or covered by

parking structure Any roof structure must have a SRI of ≥29 or covered

by solar panels

SUSTAINABLESITES

SS CREDIT 7.IHEAT ISLAND EFFECT: NON

ROOFI POINT AVAILABLE

INTENTReduce heat islands to minimize impact on microclimates and human and wildlife habitats

CALCULATIONS (continued…)

Q = (O+R+S)

Q > T/2

Q = sum of open space paving, high reflectance

paving, and shaded area T = sum of all non-roof hardscape surfaces O = total area of all open grid paving systems(≥50%)

R = total area of all hardscapes with a SRI value ≥29

S = effective shade area

VOCABULARYAlbedoEmissivityPerviousSolar Reflectance Index (SRI)

SUSTAINABLESITES

SS CREDIT 7.IHEAT ISLAND EFFECT: NON

ROOFI POINT AVAILABLE

REQUIREMENTSOption I: High SRIFor a minimum of 75% of roof surface, use roofing materials having a SRI ≥

78 for a low sloped roof (≤ 2:12) 29 for a steep sloped roof (>2:12)

Option 2: Vegetated Install a vegetated roof for 50% of roof area

Option 3: CombinationInstall a combination of high SRI & vegetative per the following criteria:

(Area of roof ÷ 75%) + (Area of Vegetated Roof ÷50%) = Total Roof Area

EXEMPLARY PERFORMANCE100% of roof is green

SUSTAINABLESITES

SS CREDIT 7.2HEAT ISLAND EFFECT: ROOFI POINT AVAILABLE

INTENTReduce heat islands to minimize impact on microclimates and human and wildlife habitats

POTENTIAL SUSTAINABLE SITES CREDITS

SS Credit 6.1Stormwater Design: Quantity Control (1 point)

SS Credit 6.2 Stormwater Design: Quality Control (1 point)

SS Credit 7.2 Heat Island Effect Green Roof (1-2 points)

GREEN ROOFSYNERGIES

REQUIREMENTS

For Interior Lighting:Option 1Reduce the input power to any openings in the envelope by at least 50% between 11 p.m. and 5 a.m.

Option 2All openings in the envelope must have shielding for a resultant transmittance of less than 10% between 11 p.m. and 5 a.m.

SUSTAINABLESITES

SS CREDIT 8LIGHT POLLUTION REDUCTIONI POINT AVAILABLE

INTENT•Minimize light trespass•Reduce sky-glow•Improve night time visibility through glare reduction•Reduce impact on nocturnal environments


For Exterior Lighting:Only light areas required for safety and comfortLighting power densities must not exceed ANSI/ASHRAE/IESNA Standard 90.1-2007Meet exterior lighting control requirements from ANSI/ASHRAE/IESNA Standard 90.1-2007

Lighting Zones:LZ1 – Dark (park & rural)LZ2 – Low (residential)LZ3 – Medium (C/I/HDR)LZ4 – High (major city centers & entertainment districts)

SUSTAINABLESITES

SS CREDIT 8LIGHT POLLUTION REDUCTIONI POINT AVAILABLE

• ACID RAIN• ALTERNATIVE FUEL VEHICLES• BIODIVERSITY• BIOMASS• BIOSWALE• BROWNFIELD• BUILDING DENSITY• BUILDING FOOTPRINT• COMMUNITY CONNECTIVITY• DEVELOPMENT DENSITY• DIVERSITY OF USES OR HOUSING TYPES• DRY PONDS• FLOODPLAIN• FLOOR-TO-AREA RATIO• FOOT CANDLE• HEAT ISLAND EFFECT• IMPERVIOUSNESS• NATIVE & ADAPTED PLANTS• PERVIOUSNESS• PRIME FARMLAND• RAIN GARDEN• SITE DISTURBANCE• SOLAR REFLECTANCE INDEX (SRI)• STORMWATER RUNOFF• STREET GRID DENSITY• TRANSPORTATION DEMAND MANAGEMENT• VEHICLE MILES TRAVELED (VMT)• WETLAND VEGETATION• XERISCAPING

SUSTAINABLESITES

VOCABULARY

QUESTIONS ON SUSTAINABLE

SITES?SUSTAINABLE

SITES

Water Efficiency

Efficient Water Use

3700 Billion Gallon annual water deficit in U.S.

Energy Policy Act of 1992 mandated use of low-flow plumbing fixtures

Water efficient measures in commercial buildings can reduce consumption by 30% or more

Water Types: Potable Graywater Blackwater Wastewater Stormwater

WATEREFFICIENCYOVERVIEW


3 AREAS OF WATER USE FOR A BUILDING• INDOOR WATER

• IRRIGATION WATER

• PROCESS WATER

CONSIDERATIONS FOR EVERY CATEGORY & CREDIT• ENVIRONMENT• ECONOMY• COMMUNITY

WATEREFFICIENCYOVERVIEW


Water Efficiency

Goals:• Reduce the Quantity of Water Needed for the Building

• Reduce Municipal Water Supply and Treatment

REQUIREMENTS Employ strategies that in aggregate use 20% less water than the water use baseline calculated for the building (not including irrigation).

Calculate the baseline according to the commercial and/or residential baselines outlined in text.

Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves.

The following fixtures, fittings and appliances are outside the scope of the water use reduction calculation:

Commercial Steam Cookers Commercial Dishwashers Automatic Commercial Ice Makers Commercial (family sized) Clothes Washers Residential Clothes Washers Standard and Compact Residential Dishwashers

INTENT•To increase water efficiency within buildings to reduce the burden on municipal water supply and wastewater systems.

WATEREFFICIENCY

WE PREREQUISITE IWATER USE REDUCTIONREQUIRED

REQUIREMENTSOPTION I: Reduce by 50% (2 points)Reduce potable water consumption for irrigation by 50% from a calculated midsummer baseline case.

Reductions must be attributed to any combination of the following items:

Plant species, density and microclimate factor

Irrigation efficiency Use of captured rainwater Use of recycled wastewater Use of water treated and conveyed by a public

agency specifically for nonpotable uses Groundwater seepage that is pumped away from the immediate vicinity of building slabs and foundations may be used for landscape irrigation to meet the intent of this credit. However, the project team must demonstrate that doing so does not affect site stormwater management systems.

INTENT•To 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.

WATEREFFICIENCY

WE CREDIT IWATER EFFICIENT LANDSCAPING2 – 4 POINTS AVAILABLE


OROPTION 2: No Potable Water Use or Irrigation (4 points)

Meet the requirements for Option 1.ANDPATH 1Use only captured rainwater, recycled wastewater, recycled graywater or water treated and conveyed by a public agency specifically for non-potable uses for irrigation.

ORPATH 2Install landscaping that does not require permanent irrigation systems. Temporary irrigation systems used for plant establishment are allowed only if removed within 1 year of installation.

WATEREFFICIENCY


WATEREFFICIENCY


REQUIREMENTS (continued…)Non-Potable water sources include:

Captured rain or stormwater Graywater from building use (sinks, showers) Municipal recycled water (reclaimed water) Condensate reuse

High efficiency irrigation systems (micro-irrigation) deliver up to 95% of water supplied vs. convention systems that are only 60% efficient.

Use of native plants and indigenous species will reduce irrigation needs.

Graywater = does not contain human waste or process food.

Use month of July for irrigation calculations

REQUIREMENTSOPTION 1Reduce potable water use for building sewage conveyance by 50% through the use of water-conserving fixtures (e.g., water closets, urinals) or non-potable water (e.g., captured rainwater, recycled graywater, on-site or municipally treated wastewater).

OROPTION 2Treat 50% of wastewater on-site to tertiary standards. Treated water must be infiltrated or used on-site.

STRATEGIES Low-flow toilets

Automatic sensors Dry fixtures Composting toilets Waterless urinals

INTENT Increase local aquifer recharge Decrease demand on municipal plants

WATEREFFICIENCY

WE CREDIT 2INNOVATIVE WASTEWATER TECHNOLOGIES2 POINTS AVAILABLE

STRATEGIES (continued…)Substitute graywater or captured rainwater for potable water:

Sinks Showers Toilet flushing Custodial

Treat wastewater on site: Biological wastewater systems Artificial wetlands

EXEMPLARY PERFORMANCE100% Reduction for potable water use for sewage conveyance, OR 100% on site treatment of generated wastewater.

WATEREFFICIENCY

WE CREDIT 2INNOVATIVE WASTEWATER TECHNOLOGIES2 POINTS AVAILABLE

REQUIREMENTSEmploy strategies that in aggregate use less water than the water use baseline calculated for the building (not including irrigation). The minimum water savings percentage for each point threshold is as follows:

30% = 2 points35% = 3 points40% = 4 points

Calculate the baseline according to the commercial and/or residential baselines outlined in text. Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves.

INTENTTo further increase water efficiency within buildings to reduce the burden on municipal water supply and wastewater systems.

WATEREFFICIENCY

WE CREDIT 3WATER USE REDUCTION2 - 4 POINTS AVAILABLE

EXEMPLARY PERFORMANCEProjected water savings of at least 40%. (the next incremental percentage threshold)

At least 10% reduction in process and non-regulated water use. (Process water is water for industrial processes and building systems such as cooling towers, boilers and chillers.

Non-regulated water use are things like dishwashers, clothes washers and other water consuming fixtures not counted in the calculations)

WATEREFFICIENCY

WE CREDIT 3WATER USE REDUCTION2 - 4 POINTS AVAILABLE

WATER EFFICIENCYREFERENCEDSTANDARDS

REFERENCED STANDARDSEnergy Policy Act (EPAct) of 1992 and 2005Water Closets 1.6 gpfUrinals 1.0 gpfShowerheads 2.5 gpmFaucets 2.2 gpm

Exceeding (EPAct) of 1992ULF Toilets 0.8 - 1.0 gpfULF Urinals 0.8 – 1.0 gpfShowerheads 1.0 - 1.8 gpmFaucets 1.0 - 1.8 gpm

Composting Toilets 0 gpfWaterless Urinals 0 gpf

Uniform Plumbing Code 206, Section 402.0 – Water conserving Fittings and Fixtures

International Plumbing Code 2006, Section 604 – Design of Building Water Distribution System

• BASELINE VERSUS DESIGN

• BLACKWATER

• COOLING TOWER

• GALLONS PER FLUSH (GPF)

• GALLONS PER MINUTE (GPM)

• GRAYWATER

• IRRIGATION EFFICIENCY

• HARVESTED RAINTWATER

• POTABLE WATER

• WASTEWATER

WATER EFFICIENCYVOCABULARY

QUESTIONS ON WATER

EFFICIENCY?WATER

EFFICIENCY

END OF SESSION TWO

LEED GA Sessions1 2 1

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