LEED 3 Rating System

8/12/2019 LEED 3 Rating System

1/29

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


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


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


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


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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Connectivity

13

Option 1 Development Density

LF


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


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



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6/29

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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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).


4444


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).


4545


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


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


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


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


10/29


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


59

Employ water conservation strategies that in aggregate use:

30% less water than the baseline (2 Points)




60

Water Conservation - Sensor Operated Faucets


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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


62

Water Conservation Dual Flush


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


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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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


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


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


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


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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14/29

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


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.


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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16/29

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 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


18/29

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:


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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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


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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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.


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


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


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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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.


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.


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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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.


150

Underfloor Air-conditioning


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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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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


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 .


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.


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.


166

For USA

Priorities are by State and Zip Code

http://www.usgbc.org/DisplayPage.aspx?CMSPageID=1984


167


168

For Outside USA


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LEED-NC Version 3 Checklist Short Version

169

LEED-NC Version 3 Checklist Long Version

170