2. PREFACE
The preface of LEED (Leadership in Energy and Environmental Design) is a document
that outlines the goals, objectives, and principles of the LEED rating system.
GOALS
To encourage and promote sustainable building practices that are environmentally
responsible
Healthy
Cost-effective
Innovative
Have a positive impact on the global environment.
3. MINIMUM PROGRAM REQUIREMENTS
LEED is a green building certification program that was developed by the U.S. Green Building
Council (USGBC). The minimum program requirements for LEED certification are:
Building Type:
• Including new construction
• Existing buildings
• Commercial interiors
• Homes
• Neighborhood development.
Prerequisites:
• Prerequisites vary depending on the project type.
Credit Categories:
• LEED certification is based on a points
system.
• Projects must earn a minimum number of
points in each of the following credit
categories: Sustainable Sites
• Water Efficiency
• Energy and Atmosphere
• Materials and Resources
• Indoor Environmental Quality
Regional Priority
Credits: Projects can earn
additional points by achieving
certain credits that are deemed a
priority in their region.
Certification Levels:
available in four levels:
• Certified
• Silver
• Gold
• Platinum
CONCULUTION
LEED certification is a comprehensive process that involves a range of
sustainability considerations, from site selection and water efficiency to
materials selection and indoor air quality. Meeting the minimum
program requirements is just the first step in achieving LEED
certification.
4. RATING SYSTEM OF LEED
LEED (Leadership in Energy and Environmental Design) is a green building rating system that evaluates the
sustainability and environmental impact of buildings.
The cateories in the LEED rating system include:
Objective:
The LEED rating system is designed to encourage sustainable
design and construction practices and to promote environmentally responsible buildings
5. LOCATION AND TRANSPORTATION (LT)
Location and transportation are one of the
categories in the LEED rating system
It evaluates the sustainable transportation
options available at the project site
Encourages the reduction of vehicle use
Greenhouse gas emissions.
GOAL: The goal is to reduce the environmental impact
of transportation by promoting sustainable transportation
options and reducing vehicle emissions.
6. Credits and Prequisites
Some examples of credits and prerequisites in the Location and Transportation
category include:
Sustainable Sites:
This prerequisite requires a building to be located on a site that meets
specific sustainability criteria
• such as avoiding development on sensitive land or protecting water
resources.
Access to Quality Transit:
• This credit rewards buildings that are located within a certain distance of
public transportation, such as a bus stop or train station.
Bicycle Facilities:
• This credit rewards buildings that provide bicycle parking and other
amenities to encourage cycling as a transportation option.
Reduced Parking Footprint:
•This credit rewards buildings that reduce the number of parking
spaces provided, in order to encourage the alternate means of
tranportations.
7. CREDIT FOR ALTERNATIVE TRANSPORTATION
To achieve this credit, a project
must meet one of the following
requirements:
Option 1:
Reduce the total parking capacity of the project site by 20%
below the baseline parking requirements.
Option 2:
Provide preferred parking spaces for carpools and vanpools, and
provide priority parking for low-emitting and fuel-efficient
vehicles.
Option 3:
Provide secure bicycle storage and shower/locker facilities for building
occupants and visitors.
Option 4:
Develop a Transportation Demand Management (TDM) plan to reduce
single-occupancy vehicle (SOV) trips and encourage the use of alternative
transportation modes.
Option 5:
Locate the project within a 1/2 mile radius (or 1/4 mile radius in urban
areas) of an existing or planned public transportation stop.
This credit recognizes buildings that promote alternative modes of transportation to
reduce greenhouse gas emissions and improve air quality.
CONCULUSION:
• By promoting alternative modes of
transportation
• Building projects can help reduce the
carbon footprint of transportation,
• Improve air quality
• Promote healthy lifestyles for building
occupants.
• Lead to cost savings for building owners
and occupants
• Reducing the need for parking spaces and
vehicle-related expenses.
8. SUSTAINABLE SITE
Sustainable Sites Promotes
land development and
management practices with
our future in mind.
Sustainable SITES
generates less waste,
minimizes impact on the
landscape, and uses less
energy, water, and natural
resources.
9. Site Management Policy
INTENT
To preserve ecological integrity and encourage
environmentally
sensitive site management practices that provide a clean, well-
maintained, and safe building exterior while supporting high-
performance
building operations and integration into the surrounding
landscape.
BEHIND THE INTENT
Good exterior maintenance practices can significantly
affect a project site and its surroundings. Site management
best practices not only protect soil, water, and air resources
but also yield economic benefits
STEPS TO FOLOW
1. Review best management practices.
2. Gather information on current site management practices.
3. Identify site management goals and objective.
4. Create performance metrics and assign responsibilities to
team members.
5. Write site management policy.
6. Adopt site management policy.
REQUIRED DOCUMENTATION:
Site management policy document
Justification for operational elements not included
in policy
10. Site Development—
Protect or Restore Habitat
INTENT:
To conserve existing natural areas and restore damaged areas to
provide habitat and promote biodiversity.
BEHIND THE INTENT:
When site constraints prevent on-site restoration, consider off-
site conservation and restoration. An off-site approach may provide
greater total ecosystem benefits than could otherwise be achieved
on site. For projects that are unable to provide large, contiguous
parcels of on-site land for long-term conservation, providing
financial support to a recognized land trust or conservation
organization can be an effective tool.
CHANGES FROM LEED 2009
The calculation for the native vegetation threshold has
changed to 20% of the total site area (including the building
footprint) and a minimum of 5,000 square feet (465 square
meters).
The off-site option was replaced with an option for financial
support
STEPS TO FOLOW
Option 1. On-Site Restoration
1. Calculate site area required to have native or adapted
vegetation.
2. Facilitate restoration.
Option 2. Financial Support
1. Determine amount of financial support.
2. Identify qualifying partner organization.
REQUIRED DOCUMENTS:
Description of native or adapted vegetation.
Site plan indicating the project boundary, building
footprint(s), site area, areas vegetated with native or adapted
vegetation, and plant list.
Agreement with land trust or conservation organization.
U.S. projects: Confirmation that land trust is accredited by
Land Trust Alliance
Confirmation that financial support will continue to be
provided annually.
11. Rainwater Management
INTENT:
To reduce runoff volume and improve water quality by
replicating the natural hydrology and water balance of the
site, based on historical conditions and undeveloped
ecosystems in the region.
BEHIND THE INTENT:
Conventional site development disrupts natural
hydrological systems and watersheds through
impervious surfaces,
soil compaction, loss of vegetation, and loss of
natural drainage patterns. The cumulative effect of
these changes
is disruption to the natural water balance and a loss of
water resources. Typically, a conventional site’s
rainwater
management technique is to address runoff as a
byproduct to be disposed of by piping and conveying
it as quickly as
possible into centralized, large facilities at the base of
drainage areas.
STEPS TO FOLLOW:
Obtain rainfall data for project location.
Determine value for 95th-percentile rainfall events.
Analyze existing site conditions and performance.
Calculate runoff volume to be managed on site.
Manage runoff volume on site.
Analyze and refine rainwater management strategies.
Develop and implement an annual inspection program of all
rainwater management facilities.
REQUIRED DOCUMENTS:
Rain Fall data.
Rainfall events calculator or calculations for 95th percentile
storm.
Calculations for runoff volume from 25% of impervious area.
Narrative confirming that measures qualify as GI or LID.
Documents or narrative about inspections and maintenance
12. Heat Island Reduction
INTENT
To minimize effects on microclimates and
human and wildlife habitats by reducing heat
islands.
BEHIND THE INTENT
The most effective measure of a roofing
material’s ability to reject solar heat is the solar
reflectance index (SRI). However, to measure
the solar heat rejection of components that are
not roofing materials, or “nonroof ”—for
example, vegetation, shading devices, and other
less reflective components—solar reflectance
(SR) is used in this credit Instead.
STEPS TO FOLLOW:
1. Identify parking, hardscape, and roof area.
2. Identify areas of existing and planned heat
island mitigation measures.
3. Select one option
Option 1. Non roof
1. Evaluate compliance.
2. Incorporate additional mitigation strategies, if necessary.
3. Create and implement maintenance program
Option 2. Roof
1. Evaluate compliance.
2. Incorporate additional mitigation strategies, if necessary.
3. Create and implement maintenance program.
OPTION 3. NONROOFAND ROOF
Evaluate compliance.
Incorporate additional mitigation strategies, if necessary
Create and implement maintenance program.
Option 4. Parking under Cover
Evaluate compliance
Incorporate additional parking cover or modify cover surface
Create and implement maintenance program, if applicable
13. REQUIREC DOCUMENTS:
DOCUMENTS OPTION1 OPTION
2
OPTION
3
OPTION 4
Non roof and/or roof area calculations X X X
Site plan indicating LEED project boundary,
highlighting nonroof elements and measurements,
hardscape area, and area of each nonroof measure.
X X
Parking space calculations X
Plan indicating LEED project boundary and building
footprint, highlighting roof elements and measurements,
roof area, and area of each roof measure
X X
Manufacturers’documentation of SRI, SR, and paving
permeability
X X
Description of maintenance program X X X X
14. Light Pollution Reduction
INTENT
To increase night sky access, improve nighttime visibility, and
reduce thE consequences of development
For wild life and people.
BEHIND THE INTENT
This credit addresses two forms of light pollution:
up lighting and light trespass. lamp shielding for
luminaires with the highest lamp lumen levels
reduces the amount of unwanted light pollution
escaping into the night sky. To minimize light
trespass, illumination levels at the site boundary
should be maintained at specific thresholds.
STEPS TO FOLLOW:
Option 1. Fixture Shielding
1. Identify existing luminaires above 2,500 mean
lumens.
2. Assess existing luminaires against shielding criteria.
3. Address noncompliant luminaires
Option 2. Perimeter Measurements
1. Identify measurement points.
2. Take illumination measurements with lights off and
lights on.
3. Compare measurements to test compliance.
REQUIRED DOCUMENTS:
1. Luminaire shielding information.
2. Site plan showing project boundary, locations of all
measurement points.
3. Illumination measurements for each measurement
point .
15. SITE MANAGEMENT
INTENT
To preserve ecological integrity and encourage
environmentally sensitive site management
practices that provide a clean, well-maintained,
and safe building exterior while supporting high-
performance building operations and integration
into the surrounding landscape.
BEHIND THE INTENT
The goals and objectives identified by the team
and established in SS Prerequisite Site
Management policy serve as the foundation of a
set of best management practices that, when met
or exceeded, can provide excellent results for the
property and grounds. Gathering and regularly
reviewing documentation will help the team
anticipate and avoid problems and identify
opportunities for success.
OPTIONS TO FOLLOW:
1. align goals in site management policy with
minimum thresholds for credit compliance.
2. Implement policy.
3. Inventory current equipment.
4. Select option for reducing emissions From maintainence
equipment.
Option 1. Limited Turf Area
Option 2. All Manual or Electric-
Powered Equipment
Option 3. Reduction in Emissions from
Site Management Equipment
1. Determine emissions baseline and
percentage reduction.
2. Change usage patterns and recalculate
emissions to achieve required reductions.
16. LEEDS ENERGY AND ATMOSPHERE
INTRODUCTION:
LEED (Leadership in Energy and Environmental Design) is a green building rating system developed
by the U.S. Green Building Council (USGBC) to encourage sustainable design and construction
practice, one of the seven categories in the LEED rating system that focuses on reducing energy
consumption and greenhouse gas emissions associated with building operations is energy and
atmospheres .The EA category includes prerequisites and credits that address a range of issues
related to energy efficiency, renewable energy, and indoor air quality. Overall, the EA category is
designed to promote the use of sustainable energy practices in buildings, reduce carbon emissions,
and minimize the environmental impact of building operations
17. PR1: Energy Efficiency Best Management Practices
Intent: To ensure energy efficient operating strategies are
maintained in the facility
Requirement: Prepare O+M plan including the following
Current sequence of operation (CFR)
Occupancy schedule
Equipment runtime
Setpoint for HVAC and lighting levels
Min outside air requirements
Any changes in schedules
Preventive maintenance plan
System narrative describing MEP sys
Documentation: Summary of ASHRAE preliminary energy
use analysis and Level1 building audit. CFR and
Maintenance Plan.
18. Existing Building Commissioning -
Analysis
Intent:
To improve building operations, energy and resource efficiency
Option 1 Existing Building Commissioning :
Existing building Cx and energy use breakdown
Option 2 Energy Audit :
ASHRAE Level 2 energy audit plan. Good option for Old buildings, potential retrofits or capital
upgrades
Documentation:
Level 2 audit plan, updated CFR, Team members, schedule, issue logs, planned improvements
and energy use breakdown
19. Existing Building Commissioning-
Implementation
Intent:
To improve building operations, energy and resource efficiency
Requirement:
Implement no or low cost operational improvements and develop 5 year plan for equipment
replacement and major modifications. Develop tracking and verification program Apply to all energy
consuming systems.
Documentation:
List of all low/no cost measures. Summary of all retrofits and upgrades. Description of staff training and
revisions to CFR and O&M Plan.
20. Ongoing Commissioning
Intent:
To improve building operations, energy and resource efficiency
Requirement:
Meet requirements of CR1 and establish ongoing Cx process. Cx must occur quarterly
for first year and later annuallyApply to all energy consuming systems
Documentation:
Ongoing Cx plan. List of activities and tasks completed. Confirmation that operation
manuals CFR and O&M are updated
21. Minimum Energy Performance
Option 1:
Benchmark against typical buildings. Each building should be
separately metered and calibrated. Registerbuilding in EnergyStar
portfolio Manager tool and update regularly
Documentation:
Meter calibration report. Energy star portfolio manager profile
access. Copy of utility bills. Stamped statement of energy
performance. Similar buildings comparability for path2. Normalized
EUI.
Option 2 :
Benchmark against historical data by comparing 12 monthsof
performance with 3 continuous years of previous 5.
Documentation:
Meter calibration report. Energy star portfolio manager profile
access. Copy of utility bills. Source EUI and calculations supporting
improvement
22. Demand Response
Intent:
Increase participation in DR tech that makes energy generation and distribution
system more efficient
Requirement:
Evaluate building and equipment for participation in DRprograms via load shedding
and shifting. On site electricity generation doesn't apply here. Case 1 DR availableCase
2 DR not availableCase 3 Permanent load shifting
Documentation:
Case1, 2, 3: Evidence of ability to shed 10% of peak load. DR/load shifting in CFR and
O&M plan.
23. Renewable energy and carbon offsets
Intent:
Reduction of greenhouse gas emissions through local and grid source renewable
energy and carbon mitigation projects
Requirement:
Demonstrate at least 1 or both of following.
Scope 1 Emissions:
Directly emitted from building (coal, gas burning )
Scope 2 Emissions:
Not under control of building (Electricity)Documentation: Total energy use. Renewables
energy production. 2 year commitment with Green E power, REC or Carbon offsets.
Credit points calculations.
