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LEED- NC
Green Building Rating System
For New Construction &
Major Renovations
Version 3 (2009)
References
2
www.usgbc.org
LEED for New Construction Version 3 Rating System
LEED for New Construction Version 3 Credit Checklist
http://www.usgbc.org/resources/list/reference-guides
http://www.usgbc.org/DisplayPage.aspx?CMSPageID=220
http://www.usgbc.org/resources/leed-reference-guide-green-
building-design-and-construction-global-acps
LEED-NC 2009 examines sustainability in specific areas
3
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
LEED-NC 2009
Points are assigned in several sub-categories Prerequisites
Must comply to be eligible for certification Points are totaled to arrive at a total score for the building Four levels of certification
LEED Certified requires 40 to 49 points Silver Level requires 50 to 59 points Gold Level requires 60 to 79 points Platinum Level requires 80+ points
4
Sustainable Sites
5
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
Sustainable Sites - Goals
Develop only appropriate sites
Reuse existing buildings and/or sites
Protect natural and agricultural areas
Reduce need for automobile use
Protect and/or restore sites
6
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Sustainable Sites Prerequisite 1: Construction Activity Pollution
Prevention
7
Intent
Reduce pollution from construction activities by
controlling soil erosion, waterway sedimentation and
airborne dust generation
Sustainable Sites Prerequisite 1: Construction Activity Pollution
Prevention
8
Requirements
Create and implement an ErosionControl Plan (ESC) for all construction
activities. The ESC must conform tothe erosion and sedimentation
requirements of the 2003 EPAConstruction General Permit or local
codes (whichever is more stringent)
Prevent loss of soil by wind erosion orstorm water run-off
Protect topsoil by stockpiling for
reuse
Prevent sedimentation of storm
sewers
or waterways
Prevent air pollution by
particulates or dust
Sustainable Sites Prerequisite 1: Construction Activity Pollution
Prevention
9
Green areashave been
hydro-seededwith a
temporarygrass seed
(not yet
germinated)
sediment basin
diversion dike
silt fence
Compacted
granular bar
for bldg pad
perimetersilt fence
perimetersilt fence
sedimentbasin
Sustainable Sites Credit 1: Site Selection (1 Point)
10
Intent
Avoid development of inappropriate sites and reduce
the environmental impact from the location of a building
on a site
Requirement
Do not develop on sites that are
Prime farmland
5 feet or less below 100 year flood plain
Habitat for endangered or threatened species
Within 100 feet of wetlands
Previously undeveloped land within 50 feet of
water (sea, lake, river, stream)
Public parkland
Sustainable Sites Credit 2: Development Density & Community
Connectivity (5 Points)
11
Intent
Channel development tourban areas with existing
infrastructure, protectgreenfields and preserve
habitat and natural
resources
Sustainable Sites Credit 2: Development Density & Community
Connectivity
12
Requirement
Option 1 Development Density
Construct or renovate building on a previously developedsiteAND in a community with a minimum density of 60,000 square
feet per acre net
OR Option 2 Community Connectivity
Construct or renovate building on a previously developedsite
AND withinmile of a residential neighborhood orcommunity with an average density of 10 units per acre net
ANDwithin mile of at least 10 basic services*ANDwithpedestrian access between the building and services.
* - Bank / Place of Worship / Grocery / Daycare / Cleaners / Fire Station /Beauty / Hardware / Laundry / Library / Medical / Park / Pharmacy / Post
Office / Restaurant / School / Theater .
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Sustainable Sites Credit 2: Development Density & Community
Connectivity
13
Option 1 Development Density
LF
Sustainable Sites Credit 2: Development Density & Community
Connectivity
14
Option 2 Community
Connectivity
Sustainable Sites Credit 3: Brownfield Redevelopment (1 point)
15
Intent
Rehabilitate damaged sites where development is
complicated by environmental contamination,
reducing pressure on undeveloped land
Sustainable Sites Credit 3: Brownfield Redevelopment
16
Develop on a site that is documented as contaminated
(ASTM E1903-97 Phase II Environmental; Site
Assessment)
OR
Develop on a site that is classified as brownfieldby a
local, state or federal agency
AND
Effectively remediate the damage
Requirement
EPA defines brownfields as abandoned, idled orunder-used industrial and commercial facilities where
redevelopment is complicated by real or perceivedenvironmental contamination. (Usually associated with pastindustrial or waste disposal activities.)
Sustainable Sites Credit 4: Alternative Transportation (6 Points)
17
Reduce pollution and land development impacts
from automobile use
Intent
Sustainable Sites Credit 4.1: Alternative Transportation Public Transportation Access
18
Locate project within 1/2 mile
walking distance of an existing,
or planned and funded,
commuter rail, light rail or
subway station
OR
Locate project within 1/4 milewalking distance of one or more
stops for two or more public,
campus or private bus lines
usable by building occupants.
Requirement
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Sustainable Sites Credit 4.2: Alt Transportation Bicycle Storage & Changing Rooms
19
Requirement
Provide secure bicycle storage
(within 200 yards of a building
entrance)with convenient
changing/shower facilities for5% or more of regular building
occupants. Provide shower
and changing facilities for 0.5%
of full time equivalent
occupants
Commercial andInstitutional
Buildings
Provide covered storage
facilities for securing bicycles
for 15% or more of regular
building occupantsin lieu of
changing/shower facilities.ResidentialBuildings
Sustainable Sites Credit 4.3: Alt Transportation Low Emitting & Fuel Efficient Vehicles(3 Points)
20
Requirement
Option 1
Provide preferred parking for low-
emitting and fuel-efficient vehicles
for 5% of the total vehicle parkingcapacityof the site.
Option 2
Install alternative-fuel refueling
stationsfor 3% of the total
vehicle parking capacityof thesite.
Sustainable Sites Credit 4.3: Alt Transportation Low Emitting & Fuel Efficient Vehicles(3 Points)
21
Requirement
Option 3
Provide low-emitting and fuel-
efficient vehicles for 3% of Full-
Time Equivalent (FTE) occupants
AND provide preferred parking
for these vehicles
Option 4
Provide building occupants
access to low-emitting or fuel
efficient vehicle-sharing program
Sustainable Sites Credit 4.4: Alternative Transportation Parking Capacity (2 points)
22
Requirement Case 1 Non-residential Buildings
Option 1
Size parking capacity to not exceed
minimum localzoning requirements,
AND, provide preferred parking for
carpools or vanpools for 5% of the
total provided parking spaces
Option 2
For projects that provide parking for
less than 5% of FTEbuilding
occupants:
Provide preferred parking for
carpools or vanpools, marked as
such, for 5% of total provided parkingspaces
Option 3
Provide no new parking
Option 4
For projects with no minimum local
zoning requirements, provide 25%
fewer parking spaces than the
applicable standard listed in the
2003 Institute of Transportation
Engineers Parking Study
Sustainable Sites Credit 4.4: Alternative Transportation Parking Capacity
23
Requirement Case 2 Residential Buildings
Option 1
Size parking capacity to meet but not
exceed minimum localzoning
requirements, AND, provide
Infrastructure and programs to
facilitate shared vehicle use.
Option 2
Provide no new parking
Sustainable Sites Credit 4.4: Alternative Transportation Parking Capacity
24
Requirement Case 3 Mixed-use Projects
Option 1
Mixed-use buildings with less than
10% commercial area must be
considered to be residential and
meet the requirements for Case 2.
For mixed-use buildings with more
than 10% commercial, the
commercial portion must comply with
Case 1 and the residential portion
must comply with Case 2
Option 2
Provide no new parking
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Sustainable Sites Credit 6.1: Stormwater DesignQuantity Control (1 Point)
31
Requirement
Implement a stormwater
management plan that results ina 25% decrease in the volume
of stormwater runoff from the
two-year 24-hour design storm
Case 2 Existing Imperviousness is greater than 50%
Sustainable Sites Credit 6.2: Stormwater Design Quality Control
32
Construct site stormwater treatment systems designed to
remove 80% of the total suspended solids (TSS) from 90% of
average annual rainfall
Requirement
Bioswale
Aquatic Plants
Sustainable Sites Credit 6.2: Stormwater Design Quality Control (1 Point)
33
Green RoofOil / Water Separator
Sustainable Sites Credit 7: Heat Island Effect
34
Reduce heat islands (thermal gradient differences between
developed and undeveloped areas) to minimize impact on
microclimate, human, and wildlife habitat
Intent
Sustainable Sites Credit 7: Heat Island Effect
35
Heat Island Effects occur when warmertemperatures are experienced in urbanlandscapes compared to adjacent ruralareas as a result of solar energy retentionon constructed surfaces. Principlesurfaces that contribute to the heat islandeffect include streets, sidewalks, parkinglots and buildings
On warm summer days with calm winds, theair in a city can be 2-8 degrees F hotterthanthe surrounding countryside
Sustainable Sites Credit 7.1: Heat Island EffectNon-Roof (1 point)
3636
RequirementOption 1
Provide any combination of the following strategies for 50% of the site
hardscape(including roads, sidewalks, courtyards and parking lots):
Shade (within 5 years of occupancy)
Shade from structures covered by solar panels
Shade from architectural devices or structures with Solar
Reflectance Index (SRI) of at least 29 Hardscape materials with a SRI of at least 29
Open grid pavement system (at least 50% pervious)
Option 2
Place a minimum of 50% of parking spaces under cover(defined as under
ground, under deck, under roof, or under a building). Any roof used to
shade or cover parking must have an SRI of at least 29, be a vegetatedgreen roof or be covered with solar panels (PV)
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Sustainable Sites Credit 7.1: Heat Island EffectNon-Roof
3737
Solar Reflectance Index (SRI)
Measure of a constructed surfaces ability to reflect solar
heat.
0 SRI 100
Sustainable Sites Credit 7.2: Heat Island EffectRoof (1 Point)
3838
Requirement
Option 1
Use roofing materials having a
Solar Reflectance Index (SRI)
equal to or greater than the values
in the table below for a minimum of
75% of the roof surface
Area of Roof Meeting Minimum SRI
Total Roof Area
SRI of Installed Roof
Required SRI 75%
Sustainable Sites Credit 7.2: Heat Island EffectRoof
3939
Requirement
Option 2
Install a vegetated roof for at least 50%of the roof area
Sustainable Sites Credit 7.2: Heat Island EffectRoof
4040
Requirement
Option 3
Install high albedo and vegetated roof surfacesthat, in combination,
meet the following criteria:
Albedo
Property of a surface that is
indicative of its ability to reflectand reject heat.
Sustainable Sites Credit 8: Light Pollution Reduction
41
Minimize light trespass from the building and site,
reduce sky-glow to increase night sky access, improve
nighttime visibility through glare reduction, and reduce
development impact on nocturnal environments
Intent
Sustainable Sites Credit 8: Light Pollution Reduction (1 Point)
4242
Requirement for Interior Lighting
Option 1
Reduce the input power (by automatic device) of all non-
emergency interior luminaires with a direct line of sight to any
openings in the envelope (non-opaque) by at least 50%
between 11 pm and 5 am.
Option 2
All openings in the envelope (translucent or transparent) with a
direct line of sight to any nonemergency luminaires must have
shielding (controlled/closed by automatic device) for a resultant
transmittance of less than 10% between 11 pm and 5 am
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Sustainable Sites Credit 8: Light Pollution Reduction
4343
Requirement for Exterior Lighting
Only light areas as required for safety and comfort. Do not
exceed the lighting power densities for exterior areas defined
inASHRAE/IESNA Standard 90.1-2007, Exterior Lighting
Section, without amendments. Provide lighting controls as
prescribed inASHRAE/IESNA Standard 90.1-2007
Meet Exterior
Lighting
Requirements as
Stipulated for
Outdoor Lighting
Zones
LZ1: Dark (developed areas within national parks,state parks, forest land and rural areas)
Design exterior lighting so that all site and building-
mounted luminaires produce a maximum initialilluminance value no greater than 0.01 horizontal and
vertical footcandlesat the site boundary and beyond.
Document that 0%of the total initial designed fixturelumens (sum total of all fixtures on site) are emitted
at an angle of 90 or higher from nadir (straight
down).
Sustainable Sites Credit 8: Light Pollution Reduction
4444
Requirement for Exterior Lighting
LZ2: Low (primarily residential zones, neighborhood business districts, lightindustrial areas with limited nighttime use and residential mixed-use areas)
Design exterior lighting so that all site and building-mounted luminaires produce a
maximum initial illuminance value no greater than 0.10 horizontal and vertical footcandlesat the site boundary and no greater than 0.01 horizontal footcandles 10 feet beyond thesite boundary. Document that no more than 2%of the total initial designed fixture lumens(sum total of all fixtures on site) are emitted at an angle of 90 degrees or higher from nadir(straight down).
LZ3: Medium (all other areas not included in LZ1, LZ2 or LZ4, such as commercial/industrial, and high-density residential)
Design exterior lighting so that all site and building-mounted luminaires produce amaximum initial illuminance value no greater than 0.20 horizontal and vertical footcandles
at the site boundary and no greater than 0.01 horizontal footcandles 15 feet beyond thesite. Document that no more than 5%of the total initial designed fixture lumens (sum totalof all fixtures on site) are emitted at an angle of 90 degrees or higher from nadir (straight
down).
Sustainable Sites Credit 8: Light Pollution Reduction
4545
Requirement for Exterior Lighting
LZ4: High2 (high-activity commercial districts in major metropolitan areas)
Design exterior lighting so that all site and building-mounted luminaires produce amaximum initial illuminance value no greater than 0.60 horizontal and vertical footcandlesat the site boundary and no greater than 0.01 horizontal footcandles 15 feet beyond the
site. Document that no more than 10%of t he total initial designed fixture lumens (sumtotal of all fixtures on site) are emitted at an angle of 90 degrees or higher from nadir(straight down).
Water Efficiency
46
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
47
The Facts on Water
Vital to sustenance of life. Abundant, but 97% is
unusable
Urbanization andIndustrialization increases
global stress on fresh water
One sixth of the worldspopulation does not haveaccess to fresh water
6,000 people die every dayas a result of contaminated
water
fresh water shortages will dwarf the energy crisis in significance and
severity; it is considered to be a full-scale emergency United Nations
Environment Program
48
The Facts on Water
It takes 260 liters of water to make 1 cup of coffee
x 70 =
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Water Efficiency - Goals
Reduce the quantity of water needed for the building.
Reduce burden on municipal water supply and
treatment systems.
49
Water Efficiency Pre-Requisite 1: Water Use Reduction
50
To increase water efficiency within buildings to reduce
the burden on municipal water supply and wastewater
systems.
Intent
Water Efficiency Pre-Requisite 1: Water Use Reduction
51
Employ strategies that in aggregate use 20% less
water than the water use baseline calculated for the
building (not including irrigation).
Requirement
Water Efficiency Credit 1: Water Efficient Landscaping
52
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
Intent
Water Efficiency Credit 1: Water Efficient Landscaping
53
Option 1 - Reduce potable water use for landscaping by 50%.
(2 Points)
Reductions shall 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 non-potable use
Water Efficiency Credit 1: Water Efficient Landscaping
54
Option 2 No Potable Water Use for Irrigation (4 points)
Meet the Requirements for Option 1
Use only capturedrainwater, recycled
wastewater, recycledgraywater or water
treated and conveyed bya public agency
specifically for nonpotable
uses for irrigation.
Install landscaping that doesnot require permanent
irrigation systems.Temporary irrigation systems
used for plant establishmentare allowed only if removed
within a period not to exceed
18 months of installation.
OR
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Water Efficiency Credit 1: Water Efficient Landscaping
55
Use landscaping that requires low (or no) levels of
irrigation
Use captured rainwater
Use treated recycled graywater Use treated recycled wastewater
Use drip irrigation systems
Use mulch and compost to retain water and maintain
plant health
Strategies
Water Efficiency Credit 2: Innovative Wastewater Technologies (2 Points)
56
Reduce generation of wastewater and potable water
demand, while increasing the local aquifer recharge
Intent
Water Efficiency Credit 2: Innovative Wastewater Technologies (2 points)
57
Option 1
Reduce potable water use or
building sewage conveyance by
50% through the use of water
conserving fixtures (water
closets, urinals) or non-potable
water (captured rainwater,
recycled graywater, and on-site
or municipally treated
wastewater).
Option 2
Treat 50% of wastewater on-site
to tertiary standards. Treated
water must be infiltrated or used
on-site.
Water Efficiency Credit 3: Water Use Reduction
58
Maximize water efficiency within buildings to reduce the
burden on municipal water supply and wastewater
systems
Intent
Water Efficiency Credit 3: Water Use Reduction
59
Employ water conservation strategies that in aggregate use:
30% less water than the baseline (2 Points)
35% less water than the baseline (3 Points)
40% less water than the baseline (4 Points)
Water Efficiency Credit 3: Water Use Reduction
60
Water Conservation - Sensor Operated Faucets
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Water Efficiency Credit 3: Water Use Reduction
61
Water Conservation Low Flow Urinals
1.8 Gallons/Flush 1.5 Gallons/Flush 1.0 Gallons/Flush 0.8 Gallons/Flush 0.5 Gallons/Flush 0.125 Gallons/Flush ZERO Gallons/Flush
Water Efficiency Credit 3: Water Use Reduction
62
Water Conservation Dual Flush
Water Efficiency Credit 3: Water Use Reduction
63
Water Conservation Low Flow Shower Heads
7 Gallons/minute
2.5 Gallons/minute
Energy & Atmosphere
64
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
Energy and Atmosphere - Goals
Establish energy efficiency and system performance
Optimize energy efficiency
Support ozone protection protocols
Encourage renewable and alternative energy sources.
65
Energy and Atmosphere Pre-requisite 1: Fundamental Building Commissioning
66
Verify that the buildings energy related systems are
installed, calibrated and perform according to the
owners project requirements, basis of design, and
construction documents
Intent
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Energy and Atmosphere Pre-requisite 1: Fundamental Building Commissioning
67
Implement (contract for) fundamental best practice
commissioning procedures:
Designate a Commissioning Authority Develop and Review Owners Project Requirements and
Basis of Design
Incorporate commissioning requirements intoConstruction Documents
Develop and implement a commissioning plan Verify installation and performance of commissioned
systems
Complete a commissioning report
Requirement
Energy and Atmosphere Pre-requisite 1: Fundamental Building Commissioning
68
HVAC&R systems (both mechanical and passive)
Associated HVAC&R controls
Lighting and daylighting controls
Domestic hot water systems
Renewable energy systems (wind, solar, etc.)
Systems to be Commissioned
Energy and Atmosphere Pre-requisite 1: Fundamental Building Commissioning
69
Owner appoints a Commissioning Authority (CxA) Include commissioning requirements in
bid documents
CxA authors Commissioning Plan Installation Observation Ensure other building systems are not
compromising performance of each feature
Contractor performs pre-functional tests andcorrects any deficiencies
Systems are tested and balanced Contractor completes start-up and functional
testing of all items listed in ConstructionDocuments
Results documented per manufacturersinstructions and per Construction Documents
Requirements
Energy and Atmosphere Pre-requisite 2: Minimum Energy Performance
70
Establish the minimum level of energy efficiency for the
proposed building and systems.
Intent
Energy and Atmosphere Pre-requisite 2: Minimum Energy Performance
71
Design the building to improve
energy performance by 10%as
specified inASHRAE/IESNA
90.1-2007(without amendments)
Requirement
Option 1 Whole Building Energy Simulation
Energy and Atmosphere Pre-requisite 2: Minimum Energy Performance
72
Comply with the prescriptive measures of: ASHRAE Advanced Energy
Design Guide for Small Office
Buildings 2004 ASHRAE Advanced Energy
Design Guide for Small Retail
Buildings 2006
ASHRAE Advanced EnergyDesign Guide for Small
Warehouses and Self StorageBuildings 2008
Requirement
Option 2 Prescriptive Compliance Path
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Energy and Atmosphere Credit 1: Optimize Energy Performance
79
Requirement
Option 2 Prescriptive Compliance Path
(1 Points)
Comply with the prescriptive measures of the
ASHRAE Advanced Energy Design Guide for
Small Office Buildings 2004. The followingrestrictions apply:
Buildings must be under 20,000square feet
Buildings must be office occupancy Project teams must fully comply
with all applicable criteria as
established in the Advanced Energy
Design Guide for the climate zonein which the building is located
Energy and Atmosphere Credit 1: Optimize Energy Performance
80
Requirement
Option 3 Prescriptive Compliance Path(1-3 Point)
Comply with the Prescriptive Measures of the
Advanced Buildings Core Performance Guide.
Energy and Atmosphere Credit 2: On-site Renewable Energy
81
Encourage and recognize increasing levels of on-site
renewable energy self-supply in order to reduce
environmental and economic impacts associated with
fossil fuel energy use.
Intent
Energy and Atmosphere Credit 2: On-site Renewable Energy
82
Requirement
Use on-site renewable energy systems to offsetbuilding energy cost. Calculate project performance
by expressing the energy produced by therenewable systems as a percentage of the building
annual energy costand using the table below todetermine the number of points achieved.
Use the building annual energy cost calculated in EACredit 1 or use the Department of Energy (DOE)
Commercial Buildings Energy Consumption Survey
(CBECS) database to determine the estimatedelectricity use.
Energy and Atmosphere Credit 2: On-site Renewable Energy
Requirement
Systems That Qualify
Photovoltaic systems Solar thermal systems Bio-fuel based electrical systems Geothermal heating systems Geothermal electric systems Low-impact hydro electric power
systems
Wave and tidal power systems
Systems That Do Not Qualify
Architectural features Passive solar Ground-source heat pumps Daylighting Green Power from Off-site
Energy and Atmosphere Credit 3: Enhanced Commissioning
84
Begin the commissioning process early during the
design process and execute additional activities after
systems performance verification is completed.
Intent
Prior to the start of the construction documents phase,
designate a Commissioning Authority (CxA).
The CxA shall have documented commissioningauthority experience in at least two building projects.
The individual serving as the CxA shall be independent
of the work of design and construction.
The CxA shall report results, findings and
recommendations directly to the Owner.
This requirement has no deviation for project size.
Requirements
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Energy and Atmosphere Credit 6: Green Power (2 Points)
91
Encourage the development and use of grid-source,
renewable energy technologies on a net zero pollution
basis.
Intent
Energy and Atmosphere Credit 5: Green Power
92
Provide at least 35%of
the buildings electricity
from renewable sourcesby engaging in at least a
two-year renewable
energy contract
Renewable sources are
as defined by the Center
for Resource Solutions
(CRS) Green-e products
certification requirements
Requirement
www.green-e.org
Materials and Resources
93
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
Materials and Resources - Goals
Reduce the amount of materials needed.
Use materials with less environmental impact.
Reduce and manage waste.
94
Materials and Resources Pre-requisite 1: Storage and Collection of Recyclables
95
Facilitate the reduction of waste generated by building
occupants that is hauled to and disposed of in landfills.
Intent
Materials and Resources Pre-requisite 1: Storage and Collection of Recyclables
96
Provide an easily accessible area that serves the entire
building, dedicated to the separation, collection and
storage of materials for recycling, including:
Paper
Corrugated Cardboard
Plastic
Glass
Metal
Requirement
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Materials and Resources Credit 1: Building Reuse
97
Extend the life cycle of existing building stock, conserve
resources, retain cultural resources, reduce waste and
reduce environmental impacts of new buildings as they
relate to materials manufacturing and transport.
Intent
Materials and Resources Credits 1.1: Building Reuse Maintain Existing Walls,Floors and Roof
98
Maintain the existing building structure and envelope.Credits are accumulated as follows:
Requirements
Materials and Resources Credit 1.2: Maintain Interior Non-structural Elements(1 Point)
99
Use existing interior non-structural elements (interior
walls, doors, floor coverings and ceiling systems) in
at least 50%of the completed building
Requirements
Materials and Resources Credit 2: Construction Waste Management
10
Divert construction, demolition, and land clearing debris
from landfill disposal.
Redirect recyclable recovered resources back to themanufacturing process.
Redirect reusable materials to appropriate sites.
Intent
Materials and Resources Credits 2: Construction Waste Management (1-2 Points)
10
Requirements
Recycle and/or salvage non-hazardous construction
and demolition debris. Credits are accumulated as
follows:
Materials and Resources Credits 2: Construction Waste Management
10
Strategies
Develop and implement a construction waste
management plan that, at a minimum, identifies the
materials to be diverted from disposal and whether the
materials will be sorted on-site or co-mingled.
Excavated soil and land-clearing debris do notcontribute to this credit.
Calculations can be done by weight or volume, butmust be consistent throughout
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Materials and Resources Credit 3: Materials Reuse (1-2 Points)
10
Reuse building materials and products in order to
reduce demand for virgin materials and to reduce
waste, thereby reducing impacts associated with the
extraction and processing of virgin resources.
Intent
Materials and Resources Credits 3: Materials Reuse
10
Requirements
Use salvaged, refurbished or reused materials such that thesum of these materials constitutes 5% or 10%, based on cost,
of the total value of materials on the project. Credits areaccumulated as follows:
Materials and Resources Credits 3: Materials Reuse
10
Strategies
Commonly Salvaged or Refurbished Materials:
Beams and posts
Wood flooring and paneling
Doors and door frames
Cabinetry and built-in furniture
Brick and masonry
Decorative elements, such as mantles, ironwork,antique light fixtures
Materials and Resources Credit 4: Recycled Content (1-2 Points)
10
Increase demand for building products that have
incorporated recycled content material, reducing the
impacts resulting from extraction and processing of
new material.
Intent
Materials and Resources Credits 4: Recycled Content
10
Requirements
Use materials with recycled content such that the sum ofpost-consumer recycled content plus one-half of the pre-
consumer content constitutes at least 10% or 20% (based oncost)of the total value of the materials in the project.
Mechanical, electrical and plumbing components shall not beincluded in this calculation
Furniture may be included, providing it is includedconsistently in MR Credits 3 7
Credits are accumulated as follows:
Materials and Resources Credits 4: Recycled Content
10
Requirements
Post-consumer recycled content is waste material collectedafter use by the consumer.
Post-consumer
As demand for recycled content productsgrows, costs will become more competitive; in
some cases, costs are lower for recycled
content products than for conventional ones
Recycled content products may requireadditional lead time for delivery
Pre-consumer
Pre-consumer content is material that is diverted from thewaste stream in a manufacturing process.
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Materials and Resources Credits 4: Recycled Content
10
Common Materials with Recycled Content
Concrete with fly ash orreclaimed concrete
Rebar, steel, aluminum andmiscellaneous metals
Metal siding and roofing Brick Ceiling tiles Carpet and carpet cushion Toilet partitions Ceramic and porcelain tile Insulation
Materials and Resources Credit 5: Regional Materials (1-2 Points)
11
Increase demand for building materials and products
that are extracted and manufactured within the region,
thereby supporting the use of indigenous resources
and reducing the environmental impacts resulting from
transportation.
Intent
Materials and Resources Credits 5: Regional Materials
11
Requirements Use building materials or products that have been extracted, harvested or
recovered, as well as manufactured, within 500 miles of the project sitefor aminimum of 10% or 20% (based on cost)of the total value of the materials in the
project.
Mechanical, electrical and plumbing components shall not beincluded inthis calculation
Furniture may be included, providing it is included consistently in MRCredits 3 7
Credits are accumulated as follows:
Materials and Resources Credit 6: Rapidly Renewable Materials (1 point)
11
Reduce the use and
depletion of finite raw
materials and long-
cycle renewable
materials by replacing
them with rapidly
renewable materials.
Intent
Materials and Resources Credit 6: Rapidly Renewable Materials
11
Requirements
Use rapidly renewable building materials andproducts (made from plants that are typically
harvested within a ten-year cycle or shorter)for 2.5% of the total valueof all building
materials and products used in the project,based on cost
Commonly Used
Rapidly Renewable Materials Bamboo flooring Poplar OSB (oriented strand
board)
Wool carpet Cotton batt insulation Cork Linoleum flooring Straw bale walls Wheatboard Sunflower seed board
Materials and Resources Credit 7: Certified Wood (1 Point)
11
Encourage environmentally responsible forest
management
Intent
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Materials and Resources Credit 7: Certified Wood
11
Requirements
Use a minimum of 50% (by cost) of wood-based materials and products,certified in accordance with the Forest Stewardship Councils Principles
and Criteria, for wood building components including structural anddimensional framing, flooring, finishes, built-in furnishings, and non-rented
temporary construction items (bracing, pedestrian barriers, formwork, etc.)
Indoor Environmental Quality
11
Energy &Atmosphere
WaterEfficiency
35%
10%
26%15%
14%
SustainableSites
IndoorEnvironmental
Quality
Materials &Resources
Indoor Environmental Quality - Goals
Establish good indoor air quality
Eliminate, reduce, manage the sources of indoor
pollutants
Ensure thermal comfort and system controllability
Provide for occupant connection to the outdoor
environment.
117
Indoor Environmental Quality Pre-requisite 1: Minimum IAQ Performance
118
Establish minimum indoor air quality (IAQ) performance
to enhance indoor air quality in buildings, thus
contributing to the comfort and well-being of the
occupants.
Intent
Indoor Environmental Quality Pre-requisite 1: Minimum IAQ Performance
119
Requirement
Meet the minimum requirements of
Sections 4 through 7 ofASHRAE
62.1-2007, Ventilation for Acceptable
Indoor Air Quality
Mechanically Ventilated Spaces
Mechanical ventilation systems must be
designed using the ventilation rate
procedure or the applicable local code,
whichever is more stringent
Naturally Ventilated Spaces
Naturally ventilated buildings must
comply with ASHRAE Standard
62.1-2007, Paragraph 5.1
Indoor Environmental Quality Pre-requisite 2: Environmental Tobacco Smoke (ETS) Control
120
Minimize exposure of building occupants, indoor
surfaces, and ventilation air distribution systems to
Environmental Tobacco Smoke (ETS).
Intent
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Indoor Environmental Quality Pre-requisite 2: Environmental Tobacco Smoke (ETS) Control
121
Requirements
All Projects - Option 1
Prohibit smoking in the building
Locate any exterior designated smoking
areas at least 25 feet awayfrom entries,outdoor air intakes and operable windows.
All Projects - Option 2
Prohibit smoking in the building except indesignated smoking areas
Locate any exterior designated smoking
areas at least 25 feet awayfrom entries,
outdoor air intakes and operable windows.
Locate designated smoking rooms to
effectively contain, capture and remove
ETSfrom the building. Verify performance.
Indoor Environmental Quality Pre-requisite 2: Environmental Tobacco Smoke (ETS) Control
122
Requirements
For Residential and Hospitality Projects Only
Prohibit smoking in common areasof the building.
Prohibit on-property smoking within 25 feet awayfrom entries,
outdoor air intakes and operable windows.
Minimize uncontrolled pathways for ETS transfer between
residential units.
Weatherstrip all doors between residential units and hallways.
Demonstrate acceptable sealing of residential units by Blower
Door Test
Indoor Environmental Quality Credit 1: Outdoor Air Delivery Monitoring (1 Point)
123
Provide capacity for indoor air quality (IAQ) monitoring
to help sustain long-term occupant health and comfort
and well being.
Intent
Indoor Environmental Quality Credit 1: Outdoor Air Delivery Monitoring
124
Install permanent monitoring systems
that provide feedback on ventilation
system performance to ensure that
ventilation systems maintain design
minimum ventilation requirements.
Configure all monitoring equipment to
generate an alarm when the conditions
vary by 10% or more from set point, via
either a building automation system
alarm to the building operator or via a
visual or audible alert to the building
occupants.
Requirements
Indoor Environmental Quality Credit 1: Outdoor Air Delivery Monitoring
125
FOR MECHANICALLY VENTILATED SPACES
Monitor CO2concentrations in densely occupied spaces. CO2monitoring locations shall be between 3 and 6 feet above the
floor.
For each ventilation system serving non-dense spaces, provide adirect outdoor airflow rate measurement device with an accuracy
of 15% of the design minimum outdoor air rate as defined byASHRAE 62.1-2007.
Requirements
Flow MeasuringStation
Indoor Environmental Quality Credit 1: Outdoor Air Delivery Monitoring
126
FOR NATURALLY VENTILATED SPACES
Monitor CO2concentrations within allNV spaces CO2monitoring locations
shall be between 3 and 6 feet abovethe floor.
One sensor may be used to representmultiple spaces if the design uses
passive stack(s) or other means to
induce airflow.
Requirements
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Indoor Environmental Quality Credit 2: Increased Ventilation (1 Point)
127
Provide additional outdoor air ventilation to improve
indoor air quality for improved occupant comfort, well-
being and productivity.
Intent
Indoor Environmental Quality Credit 2: Increased Ventilation
128
FOR MECHANICALLY VENTILATED SPACES
Increase breathing zone outdoor air ventilation rates to alloccupied spaces by at least 30% above the minimum rates
required byASHRAE Standard 62.1-2007as determined byEQ Prerequisite 1.
Requirements
Indoor Environmental Quality Credit 2: Increased Ventilation
129
FOR NATURALLY VENTILATED SPACES
Design the natural ventilation systems for occupied spaces to meet therecommendations set forth in the CIBSE Applications Manual 10: 2005,
Natural ventilation in non-domestic buildings
AND
Demonstrate using diagrams and calculations that the design of thenatural ventilation systems meets the recommendations set forth in the
CIBSE Applications Manual 10: 2005, Natural ventilation in non-domesticbuildings, CIBSE AM 13 (Mixed Mode Ventilation) or CIBSE Guide B2
(Ventilation and Air Conditioning)
OR
Use a macroscopic, multi-zone, analytic model to predict that room-by-room airflows will effectively naturally ventilate.
Requirements
Indoor Environmental Quality Credit 3: Construction IAQ Management Plan(1 Point)
130
Reduce indoor air quality problems resulting from the
construction/renovation process in order to help sustain
the comfort and well-being of construction workers and
building occupants.
Intent
Indoor Environmental Quality Credit 3.1: Construction IAQ Management Plan: During Construction
131
Develop and implement an IAQ Management
Plan for construction and pre-occupancy:
Meet or exceed the recommendedcontrol measures of the Sheet Metal
and Air Conditioning ContractorsNational Association(SMACNA)IAQguidelines for for occupied buildings
under construction, 2007, Chapter 3.
Protect stored on-site or installedabsorptive materials from moisture
damage.
If air handlers must be used duringconstruction, use filtration media with
Minimum Efficiency Reporting Value(MERV)of 8 at each return air grille,perASHRAE 52.2-1999.
Replace filtration media immediatelyprior to occupancy with MERV of 13,perASHRAE 52.2-1999.
Requirement
Indoor Environmental Quality Credit 3.2: Construction IAQ Management Plan: Before Occupancy
(1 Point)
132
OPTION 1 Flush-Out
After construction ends, prior to occupancy and with allinterior finishes installed, perform a building flush-out by
supplying a total air volume of 14,000 ft3of outdoor air per ft2of floor area while maintaining an internal temperature of at
least 60F and relative humidity no higher than 60%.
OR
If occupancy is desired prior to completion of the flush-out,the space may be occupied following delivery of a minimum
of 3,500 ft3of outdoor air per ft2of floor area to the space.
Requirement
OPTION 2 Air Testing
Conduct baseline IAQ testing, after construction ends andprior to occupancy, using testing protocols consistent with the
US EPA Compendium of Methods for the Determination of AirPollutants in Indoor Airand as additionally detailed in the
LEED Reference Guide for Green Building Design andConstruction 2009.
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Indoor Environmental Quality Credit 3.2: Construction IAQ Management Plan: Before Occupancy
(1 Point)
133
OPTION 2 Air Testing
Conduct baseline IAQ testing, after construction ends andprior to occupancy, using testing protocols consistent with the
US EPA Compendium of Methods for the Determination of Air
Pollutants in Indoor Airand as additionally detailed in theLEED Reference Guide for Green Building Design andConstruction 2009.
Demonstrate that the maximum concentration ofcontaminants listed below is not exceeded
Indoor Environmental Quality Credit 4: Low Emitting Materials
134
Reduce the quantity of indoor air contaminants that are
odorous, irritating and/or harmful to the comfort and
well-being of installers and occupants.
Intent
Indoor Environmental Quality Credit 4.1: Low Emitting Materials - Adhesives & Sealants
(1 Point)
135
RequirementAll adhesives and sealants used on theinterior of the building (defined as inside
of the weather-proofing system andapplied on-site) shall comply with the
requirements of the following referencestandards:
Adhesives, Sealants and SealantPrimers: South Coast Air Quality
Management District (SCAQMD)Rule #1168.
Aerosol Adhesives: Green SealStandard for Commercial
Adhesives GS-36.
Indoor Environmental Quality Credit 4.1: Low Emitting Materials - Adhesives & Sealants
136
Indoor Environmental Quality Credit 4.2: Low Emitting Materials Paints & Coatings(1 Point)
137
Requirement
Paints and coatings used on the interior of the building (defined as inside of theweatherproofing system and applied on-site) shall comply with the specific
criteria listed in the LEED 3 Reference Guide
Indoor Environmental Quality Credit 4.3: Low Emitting Materials Flooring Systems (1 Point)
138
Requirement
Option 1
All carpet installed in the buildinginterior shall meet the testing and
product requirements of the Carpet
and Rug Institutes Green Label
Plusprogram.
All carpet cushion installed in thebuilding interior shall meet the
requirements of the Carpet and RugInstitute Green Labelprogram.
All carpet adhesive shall meet therequirements of EQ Credit 4.1: VOClimit of 50 g/L.
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Indoor Environmental Quality Credit 4.3: Low Emitting Materials Flooring Systems (1 Point)
139
Requirement
Option 1
All hard surface flooring must be certifiedas compliant with the FloorScorestandard
Concrete, wood, bamboo and cork floorfinishes such as sealer, stain and finish
must meet the requirements of South
Coast Air Quality Management District(SCAQMD) Rule 1113, Architectural
Coatings, rules in effect on January 1,2004.
Tile setting adhesives and grout mustmeet South Coast Air QualityManagement District (SCAQMD) Rule
1168. VOC limits correspond to an
effective date of July 1, 2005 and ruleamendment date of January 7, 2005.
Indoor Environmental Quality Credit 4.3: Low Emitting Materials Flooring Systems (1 Point)
140
Requirement
Option 2
All flooring elements installed in the building interior must meet thetesting and product requirements of the California Department of
Health Services Standard Practice for the Testing of Volatile OrganicEmissions from Various Sources Using Small-Scale Environmental
Chambers, including 2004 Addenda.
Indoor Environmental Quality Credit 4.4: Low Emitting Materials Composite Woods & Agrifiber Products
(1 Point)
141
Requirement
Composite wood and agrifiber products used on the interior of thebuilding (defined as inside of the weatherproofing system) shall
contain no added urea-formaldehyderesins. Laminating adhesivesused to fabricate on-site and shop-applied composite wood and
agrifiber assemblies shall contain no added urea-formaldehyderesins.
Composite wood and agrifiber products are defined as: particleboard,medium density fiberboard (MDF), plywood, wheatboard, strawboard,
panel substrates and door cores.
Indoor Environmental Quality Credit 5: Indoor Chemical & Pollutant Source Control(1 Point)
142
Minimize exposure of building occupants to potentially
hazardous particulates and chemical pollutants.
Intent
Indoor Environmental Quality Credit 5: Indoor Chemical & Pollutant Source Control
143
Requirement
Design to minimize and control pollutant entry into buildings and later
cross-contamination of regularly occupied areas
Employ permanententryway systems at least ten feet longin theprimary direction of travel to capture dirt and particulates from enteringthe building at all entryways that are directly connected to the
outdoors.
Indoor Environmental Quality Credit 5: Indoor Chemical & Pollutant Source Control
144
Requirement
Where hazardous gases or chemicals may be present or used(including garages, housekeeping/laundry areas and copying/printing
rooms), exhaust each space sufficiently to create negative pressurewith respect to adjacent spaces with the doors to the room closed. For
each of these spaces, provide self-closing doors and deck to deckpartitions or a hard lid ceiling.
+ -+A
ExhaustDirectly To
Outdoors
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Indoor Environmental Quality Credit 5: Indoor Chemical & Pollutant Source Control
145
Requirement
In mechanically ventilated buildings, provide regularly occupied areasof the building with air filtration media prior to occupancy that provides
a Minimum Efficiency Reporting Value (MERV) of 13 or better.
Indoor Environmental Quality Credit 5: Indoor Chemical & Pollutant Source Control(1 Point)
146
Requirement
Provide containment (i.e. a closed container for storage for off-sitedisposal in a regulatory compliant storage area, preferably outside the
building) for appropriate disposal of hazardous liquid wastes in placeswhere water and chemical concentrate mixing occurs (e.g.,
housekeeping, janitorial and science laboratories)
Indoor Environmental Quality Credit 6: Controllability of Systems
147
Provide a high level of lighting system and thermal
control by individual occupants or by specific groups in
multi-occupant spaces (i.e. classrooms or conference
areas) to promote the productivity, comfort and well-
being of building occupants.
Intent
Indoor Environmental Quality Credit 6.1: Controllability of Systems Lighting(1 Point)
148
Requirement
Provide individual lighting controls for 90%(minimum) of the buildingoccupants to enable adjustments to suit individual task needs and
preferences.
AND
Provide lighting system controllability for all shared multi-occupantspacesto enable lighting adjustment that meets group needs and
preferences.
Indoor Environmental Quality Credit 6.2: Controllability of Systems Thermal Comfort(1 Point)
149
Requirement
Provide individual comfortcontrols for 50%(minimum) of
the building occupants toenable adjustments to suit
individual task needs andpreferences. Operable
windows can be used in lieu
of comfort controls foroccupants of areas that are
20 feet inside of and 10 feet
to either side of the operablepart of the window.
AND
Provide comfort systemcontrols for all shared multi-occupant spacesto enable
adjustments to suit groupneeds and preferences.
Indoor Environmental Quality Credit 6.2: Controllability of Systems Thermal Comfort(1 Point)
150
Underfloor Air-conditioning
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Indoor Environmental Quality Credit 6.2: Controllability of Systems Thermal Comfort(1 Point)
151
Chilled Beams
Indoor Environmental Quality Credit 7: Thermal Comfort (2 Points)
152
Provide for a thermally comfortable environment that
supports the productivity and well being of building
occupants.
Intent
Indoor Environmental Quality Credit 7.1: Thermal Comfort - Design
153
Requirement
Design HVAC systems and the building envelope to meet therequirements of ASHRAE Standard 55-2004, Thermal Comfort
Conditions for Human Occupancy. Demonstrate design compliance inaccordance with the Section 6.1.1 Documentation.
Indoor Environmental Quality Credit 7.2: Thermal Comfort Verification (1 Point)
154
Requirement
Provide a permanent monitoringsystem to ensure that building
performance meets the desiredcomfort criteria as determined by
IEQ Credit 7.1: Thermal Comfort -Design
Agree to implement a thermalcomfort survey of buildingoccupants within a period of six to
18 monthsafter occupancy.
Agree to develop a plan forcorrective action if the survey
results indicate that more than 20%of occupants are dissatisfiedwith
thermal comfort in the building.
Indoor Environmental Quality Credit 8: Daylight and Views
155
Provide for the building occupants a connection
between indoor spaces and the outdoors through the
introduction of daylight and views into the regularly
occupied areas of the building.
Intent
Indoor Environmental Quality Credit 8.1: Daylight & Views Daylight
156
Requirement
OPTION 1DAYLIGHT SIMULATION MODEL
Demonstrate through computersimulations that 75% or more of all
regularly occupied spaces areas achievedaylight illuminance levels of a minimum of
25 footcandles (fc) and a maximum of 500fc in a clear sky condition on September
21 at 9 a.m. and 3 p.m. Areas with
illuminance levels below or above therange do not comply. However, designs
that incorporate view-preservingautomated shades for glare control may
demonstrate compliance for only the
minimum 25 fc illuminance level.
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Indoor Environmental Quality Credit 8.1: Daylight & Views Daylight
157
OPTION 2 PRESCRIPTIVE
Use a combination of side-lighting and/or top-lighting to achieve a total daylighting zone(the floor area meeting the following requirements) that is at least 75% of all the regularlyoccupied spaces.
For the Side-lighting Daylight Zone (see diagram below):
Achieve a value, calculated as the product of the visible light transmittance (VLT) andwindow-to-floor area ratio (WFR) of daylight zone between 0.150 and 0.180. The windowarea included in the calculation must be at least 30 inches above the floor.Provide glare control
Indoor Environmental Quality Credit 8.1: Daylight & Views Daylight
158
OPTION 2 PRESCRIPTIVE
For Top-lighting Daylight Zone (see diagram below):The daylight zone under a skylight is the outline of the opening beneath the skylight, plus ineach direction the lesser of:
70% of the ceiling height, OR 1/2 the distance to the edge of the nearest skylight, OR
The distance to any permanent opaque partition (if transparent show VLT) fartherthan 70% of the distance between the top of the partition and the ceiling.
Achieve skylight roof coverage between 3% and 6% of the roof area with a minimum 0.5 VLT.The distance between the skylights must not be more than 1.4 times the ceiling height .
Indoor Environmental Quality Credit 8.1: Daylight & Views Daylight
159
OPTION 3 MEASUREMENT
Demonstrate through records of indoor light
measurements that a minimum daylight illuminationlevel of 25 fc has been achieved in at least 75% of
all regularly occupied areas. Measurements mustbe taken on a 10-foot grid for all occupied spaces
and recorded on building floor plans.
Only the square footage associated with the
portions of rooms or spaces meeting the minimumillumination requirements may be counted in the
calculations.
For all projects pursuing this option, provide
daylight redirection and/or glare control devices toavoid high- contrast situations that could impede
visual tasks. Exceptions for areas where tasks
would be hindered by daylight will be considered on
their merits.
Indoor Environmental Quality Credit 8.1: Daylight & Views Daylight
160
OPTION 4 COMBINATION
Demonstrate compliance through any combination of Options 1, 2 and 3
Indoor Environmental Quality Credit 8.2: Daylight & Views Views (1 Point)
161
Intent
Provide a connection between indoor and outdoor environments byintroducing natural light and views into the regularly occupied areas of the
building.
Requirement
Achieve direct line of sight tovision glazing for buildingoccupants in 90%of allregularly occupied spaces.
Innovation in Design Credit 1.1 thru 1.4: Innovation in Design
162
Intent
To provide design teams and projects the opportunity to be awardedpoints for
Innovative performance in Green Building categories not addressed byLEED. (Path 1 Maximum of 5 Points)
Exceptional (exemplary) performance above the requirements set byLEED (Path 2 - Maximum of 3 Points)
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Innovation in Design Credit 1.1 thru 1.4: Innovation in Design
163
Exemplary Performance
Innovation credits are granted in some instances where the designexceeds the goals stipulated in LEED
For example:MR Credit 2.2 - Construction Waste Management requires 75%of
construction waste be diverted from disposal. If 95%is achieved, anInnovation in Design Credit can be claimed.
Innovation in Design Credit 2: LEED Accredited Professional (1 Point)
164
Intent
To support and encourage the design integration required by a LEED-NC green building project and to streamline the application and
certification process
Requirement
At least one principal participant of the project team shall be a LEEDAccredited Professional
Regional Priority Credit: 1 4 Points
165
Intent
To provide an incentive for the achievement of credits that addressgeographically-specific environmental priorities.
Requirement
Earn 1-4 of the 6 Regional Priority credits identified by the USGBC regionalcouncils and chapters as having environmental importance for a projects
region.
A database of Regional Priority credits and their geographic applicability isavailable on the USGBC website, http://www.usgbc.org .
One point is awarded for each Regional Priority credit achieved; no morethan 4 credits identified as Regional Priority credits may be earned.
Regional Priority Credit: 1 4 Points
166
For USA
Priorities are by State and Zip Code
http://www.usgbc.org/DisplayPage.aspx?CMSPageID=1984
Regional Priority Credit: 1 4 Points
167
Regional Priority Credit: 1 4 Points
168
For Outside USA
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LEED-NC Version 3 Checklist Short Version
169
LEED-NC Version 3 Checklist Long Version
170