LEED-Green-Associate Questions and Answers

One of the values and benefits of building green is that it will enhance the health of the building occupants. Building green is a process that incorporates environmental considerations into every stage of a building’s life cycle, from design to construction to operation to end-of-life. Building green can improve the indoor environmental quality (IEQ) of a building, which is the physical and psychological conditions of the indoor spaces that affect the health, comfort, and productivity of the occupants. Building green can enhance IEQ by using low-emitting materials, providing adequate ventilation, controlling temperature and humidity, optimizing daylighting and lighting quality, reducing noise levels, and promoting occupant well-being12. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide2

The purpose of a life-cycle assessment (LCA) in LEED is to evaluate the potential environmental impacts of a building through its life-cycle, from the extraction of raw materials, to the manufacturing, transportation, installation, use, maintenance, and disposal or recycling of building materials and products1. LCA can help project teams to compare different design options and select the ones that minimize the environmental impacts of the building, such as global warming potential, ozone depletion potential, acidification potential, eutrophicationpotential, and smog formation potential12. LCA can also help projects earn points for the LEED v4 Building Design and Construction category under the Building Life-Cycle Impact Reductioncredit, which rewards projects for reducing the life-cycle impacts of their structure and enclosure by at least 10% compared to a baseline

Daylighting is a strategy that involves designing buildings to maximize the use of natural light and reduce the need for artificial lighting1. Daylighting can improve the indoor environmental quality by enhancing the visual comfort, mood, and productivity of the occupants2. Daylighting can also help attain points toward LEED certification by contributing to the credits in the Energy and Atmosphere and Indoor Environmental Quality categories1. Night lighting, installing indoor plants, and installing inoperable windows are not strategies that directly improve the indoor environmental quality or help attain points toward LEED certification.

Increasing density means building more units or floor area on a given site, which reduces the amount of land and resources needed per unit or occupant1. This also creates a smaller footprint and maximizes the floor area ratio (FAR), which is the ratio of the total building floor area to the site area2. Increasing density can help achieve creditsin the Location and Transportation category, such as Surrounding Density and Diverse Uses3.

LEED v4: Neighborhood Development Guide | U.S. Green Building Council1

Floor Area Ratio - Planning Department2

LEED v4: Building Design + Construction Guide - U.S. Green Building Council3

Chlorofluorocarbons (CFCs) are a type of compound that was widely used in the 20th century in various applications, including as a refrigerant in air conditioning systems such as centrifugal chillers. CFCs are known to deplete the ozone layer when released into the atmosphere, and their use has been phased out in many countries under the Montreal Protocol. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Life-cycle assessment (LCA) is the approach that refers to the identification and quantification of environmental effects throughout the life of the materials and products used in a project as well as the project itself. LCA evaluates the environmental impacts of a product, process, or service from cradle to grave, or from raw material extraction to disposal or reuse. LCA considers various impact categories, such as global warming potential, ozone depletion potential, acidification potential, eutrophication potential, smog formation potential, and human health impacts. LCA can help to compare the environmental performance of different design options, select more sustainable materials and products, and reduce the environmental footprint of a project

The credit templates are the online forms that document the achievement of the LEED credits for a project pursuing LEED certification. The credit templates are completed and signed by the specified team member who is responsible for the credit, such as the architect, engineer, contractor, or owner. The teammember must provide the required information, calculations, narratives, and supporting documentation for each credit13. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide3

A vegetated roof, also known as a green roof, is a roof that is partially or completely covered with vegetation and a growing medium, such as soil or compost. A vegetated roof can help reduce the heat island effect and manage rainwater runoff by providing the following benefits12:

It reduces the surface temperature of the roof by reflecting solar radiation and cooling the air through evapotranspiration, which is the process of plants releasing water vapor from their leaves. This can lower the ambient temperature of the surrounding area and improve thermal comfort for occupants and pedestrians.

It reduces the amount and speed of stormwater runoff by retaining and filtering rainwater in the vegetation and growing medium. This can prevent flooding, erosion, and pollution of downstream water bodies, as well as reduce the demand for potable water for irrigation or other purposes.

It enhances the biodiversity and habitat of the urban environment by providing a space for plants, animals, insects, and microorganisms to thrive. This can improve the ecological health and resilience of the ecosystem and provide aesthetic and recreational benefits for humans.

Other strategies that can contribute to reducing the heat island effect and managing rainwater runoff are:

White cement roof pavers: These are tiles made of concrete that have a high solar reflectance index (SRI), which measures how well a surface reflects solar radiation. White cement roof pavers can help reduce the surface temperature of the roof by reflecting more solar radiation than darker or less reflective materials. However, they do not provide any benefits for stormwater management, as they are impervious surfaces that do not retain or filter rainwater34.

A rainwater collection system: This is a system that captures and stores rainwater from roofs or other surfaces for reuse. A rainwater collection system can help reduce stormwater runoff by diverting rainwater from landfills or incinerators to other destinations, such as irrigation, toilet flushing, or cooling. However, it does not provide any benefits for reducing the heat island effect, as it does not affect the surface temperature of the roof or the surrounding air5 .

Shading structures that include photovoltaic panels: These are structures that provide shade for roofs or other surfaces by blocking direct sunlight. Shading structures that include photovoltaic panels can help reduce the heat island effect by lowering the surface temperature of the roof or the shaded area. They can also help generate renewable energy from solar power, which can reduce greenhouse gas emissions and energy costs. However, they do not provide any benefits for stormwater management, as they do not retain or filter rainwater .

An infill site within an existing neighborhood with substantial transit connectivity would maximize LEED points under Location and Transportation. An infill site is a site that has been previously developed or graded and is surrounded by existing development. An existing neighborhood is a geographic area with a variety of land uses, such as residential, commercial, educational, or recreational. Substantial transit connectivity means that the site has access to multiple modes of public transportation, such as buses, trains, light rail, or bicycles. The LEED Green Associate Candidate Handbook states that one of the intents of the Location and Transportation category is to “encourage development within existing communities and public transit infrastructure” [1, p. 12]. References: [LEED Green Associate Candidate Handbook], [Location and Transportation | U.S. Green Building Council]

Native species are plants that are adapted to the local climate and soil conditions, and therefore require less water and maintenance than non-native species. By maximizing the use of native species in the landscaping design, the project can reduce the need for potable water for irrigation and achieve the Outdoor Water Use Reduction credit under LEED v4 Water Efficiency category1.

LEED v4: Building Design + Construction Guide1, page 35

A site map is required to show the locations of community resources within the specified radius to meet Location and Transportation credits. It visually demonstrates compliance with LEED requirements for access to diverse uses​​.

The Energy and Atmosphere (EA) category addresses the energy performance, efficiency, and renewable sources of buildings. One of the credits in this category is EA Credit: Enhanced Refrigerant Management, which aims to reduce the emissions of ozone-depleting substances and greenhouse gases from refrigeration and air-conditioning equipment. Refrigerants are substances that are used to transfer heat in cooling systems. Some refrigerants have high global warming potential (GWP) and ozone depletion potential (ODP), which means they can contribute to climate change and damage the ozone layer if they leak or are improperly disposed of. Enhanced refrigerant management involves selecting refrigerants with low GWP and ODP, minimizing refrigerant charge size, and preventing or detecting leaks12. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide2

A wind turbine is a source of green power, which is electricity generated from renewable sources that have low or zero greenhouse gas emissions. A wind turbine converts the kinetic energy of the wind into mechanical power, which can then be used to generate electricity. Wind power is a clean, abundant, and sustainable form of energy that does not produce air pollution or contribute to climate change. According to the U.S. Department of Energy, wind power accounted for about 8.4% of the total U.S. electricity generation in 2020. The other options are not sources of green power, as they either rely on fossil fuels or nuclear energy, which have significant environmental and social impacts. Clean coal is a term used to describe technologies that aim to reduce the emissions and waste from burning coal, but it is still a carbon-intensive and polluting source of energy. Nuclear fission is a process that splits atoms to release energy, but it also produces radioactive waste that poses long-term health and safety risks. Natural gas captured by hydraulic fracturing, or fracking, is a process that injects water, chemicals, and sand into underground rock formations to release natural gas, but it also causes water contamination, air pollution, and seismic activity. References: LEED v4 Reference Guide for Building Design and Construction, p. 347 1; [U.S. Department of Energy website]

The Integrative Process is most effective during the early design stage of a project. This is when key decisions about the project are being made that can have a significant impact on its sustainability performance. By considering sustainability objectives from the outset, teams can identify opportunities for synergies and cost savings that may not be apparent later in the project. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Utilizing an existing community nature path connecting the building to surrounding buildings is an action that promotes pedestrian access to a project site. Pedestrian access is the ability of people to walk to and from a project site safely and comfortably. A community nature path is a type of pedestrian infrastructure that provides a pleasant and scenic route for walking, as well as environmental benefits such as habitat creation, stormwater management, and heat island reduction. The other options are not actions that promote pedestrian access to a project site.Placing a low speed limit in the parking lot around the building is an action that enhances pedestrian safety within the project site, but does not improve pedestrian access to the project site. Providing shuttle access between the project site and a local transit center is an action that encourages alternative transportation, but does not promote pedestrian access to the project site. Designating parking spaces closest to the building for exclusive use by carpooling vehicles is an action that reduces vehicle trips and emissions, but does not promote pedestrian access to the project site. References: LEED Green Associate Candidate Handbook, page 30; USGBC, [Location & Transportation], page 3.

The integrative process involves collaboration among all project team members, from initial planning through design and construction, to enhance the efficiency and effectiveness of systems. This process allows for better coordination among disciplines, leading to more efficient use of resources, improved environmental performance, reduced project costs, and enhanced occupant satisfaction. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Designers and builders can construct a green building that uses significantly less water than a conventional building by incorporating native plant landscapes. Native plant landscapes are plants that are adapted to the local climate and soil conditions, and require little or no irrigation, fertilization, or pesticides. They also provide habitat for wildlife, reduce stormwater runoff, and enhance the aesthetic value of the site. The LEED Green Associate Candidate Handbook states that one of the intents of the Sustainable Sites category is to “conserve water by using native or adapted plants” [1, p. 13]. References: [LEED Green Associate Candidate Handbook], [Native Plants | U.S. Environmental Protection Agency]

An integrative process is a collaborative approach that involves all project stakeholders in the design and decision-making process from the beginning to the end of a project. It aims to optimize the performance, environmental, social, and economic outcomes of a project by considering the interrelationships and synergies between various building and site systems. By identifying overlapping relationships, services and redundancies among systems, an integrative process can result in increased performance and reduced costs, as it can create more efficient, effective, and innovative solutions that meet the project goals and requirements. For example, an integrative process can help to reduce the energy demand of a building by integrating passive design strategies, such as building orientation, envelope design, daylighting, natural ventilation, and shading, which can also improve the indoor environmental quality and occupant comfort. An integrative process can also help to reduce the material and water consumption of a project by reusing existing resources, selecting durable and low-impact materials, and implementing water-efficient fixtures and systems, which can also reduce the waste generation and environmental impact of the project

An exemplary performance point is earned if the project achieves a performance level that is significantly higher than the credit requirements, as specified in the LEED Reference Guide1. The incremental performance threshold varies depending on the credit and is typically double the credit requirements or the next percentage threshold2.

 1 NC-v4.1 INc1: Innovation | LEEDuser2 What Is Exemplary Performance In LEED? | LEED Blog - Projectific, Inc.

ASHRAE stands for the American Society of Heating, Refrigerating and Air-Conditioning Engineers, a professional organization that develops standards and guidelines for the design, operation, and maintenance of buildings. ASHRAE standards are applicable to two LEED categories: Energy and Atmosphere (EA) and Indoor Environmental Quality (IEQ). The EA category addresses the energy performance, efficiency, and renewable sources of buildings. The IEQ category addresses the indoor air quality, thermal comfort, lighting quality, and acoustic performance of buildings. Some of the ASHRAE standards that are relevant for these categories are: ASHRAE Standard 90.1 for energy efficiency;ASHRAE Standard 62.1 for ventilation; ASHRAE Standard 55 for thermal comfort; ASHRAE Standard 189.1 for high-performance green buildings1 . References: LEED v4 Green Associate Candidate Handbook1, ASHRAE’s Standards & Guidelines

The Facilities Manager is typically responsible for ensuring the comfort and safety of a building’s occupants. They would be best equipped to evaluate responses to a survey about comfort levels in the building and develop a corrective action plan to address any problems identified. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

LEED MPRs state:

“Must be in a permanent location on existing land… Must use reasonable LEED boundaries… Must comply with project size requirements: BD+C and O+M: minimum 1,000 sq ft…”

Only option B satisfies all these conditions.

According to LEED v4, the commissioning authority (CxA) should be contracted before the end of the Design Development (DD) phase and should be involved in the project team from early in the Schematic Design (SD) phase1.

References := LEED v4: Building Design + Construction Guide, LEED v4 -U.S. Green Building Council, SBGD - Part D – ConsultantScopes of Work 3. Commissioning Authority, What’s new in LEED V4 – Commissioning Changes - Steven Winter …, LEED ENHANCED COMMISSIONING | Steps and Downloads

Building and material reuse contribute to the sustainability goals of a project by reducing the use of raw materials, which can save energy, water, and natural resources, as well as reduce greenhouse gas emissions, waste generation, and environmental impacts. By reusing existing buildings or materials, project teams can avoid the extraction, processing, transportation, and disposal of new materials, which can have significant environmental and social costs. LEED v4.1 recognizes and rewards multiple strategies for building and material reuse in the Building-Life Cycle Impact Reduction credit1.

Low-Impact Development (LID) is an approach to land development that uses various land planning and design practices and technologies to simultaneously conserve and protect natural resource systems and reduce infrastructure costs. LID still allows land to be developed, but in a cost-effective manner that helps mitigate potential environmental impacts. This approach aims to manage rainwater as close to its source as possible, mimicking a site’s pre-development hydrology through the use of numerous site design strategies. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Conserving the Earth’s potable water supply is a green building objective that can be achieved by utilizing high efficiency water fixtures. High efficiency water fixtures reduce the amount of water used for indoor plumbing, which reduces the demand on municipal water supply and wastewater systems. This also saves energy and money for the building owners and occupants. The LEED Green Associate Candidate Handbook states that one of the intents of the Water Efficiency category is to “reduce potable water use within buildings and for landscape irrigation” [1, p. 13]. References: LEED Green Associate Candidate Handbook, [Water Efficiency | U.S. Green Building Council]

Building-level energy metering is a prerequisite in LEED that requires the installation of energy meters to track the total energy usage of a building12. It helps to monitor and optimize the energy performance of the building and to report the data to USGBC3. Green metering, site evaluation data, and energy savings records are not terms used in LEED.

Daylighting is a strategy that uses natural light to illuminate the interior spaces of a building, reducing the need for artificial lighting and improving the visual comfort and well-being of the occupants. One of the strategies that can help improve daylighting in an office building is tolocate private offices toward the building core and organize cubicles at the perimeter, so that more people can benefit from the access to windows and views. This can also increase the daylight penetration depth and reduce glare and contrast12. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide2

Life-cycle costing (LCC) is a method of estimating the total cost of owning and operating an asset over its entire life span. LCC considers all costs associated with the acquisition, installation, operation, maintenance, and disposal of the asset12. LCC can help businesses make better decisions about purchasing, budgeting, pricing, and investing in assets2.

LCC does not quantify environmental impacts such as acidification, eutrophication, or global warming. These impacts are measured by life-cycle assessment (LCA), which is a method of evaluating the environmental effects of a product or service throughout its life cycle. LCA considers the inputs and outputs of materials, energy, and emissions at each stage of the product or service life cycle34. LCA can help businesses identify opportunities to reduce their environmental footprint, improve their sustainability performance, and comply with environmental regulations4.

However, LCC and LCA are often used together to compare different alternatives based on both economic and environmental criteria. For example, a business may use LCC to estimate the energy costs of different lighting options, and LCA to estimate the greenhouse gas emissions of each option. By combining LCC and LCA results, the business can select the option that minimizes both costs and emissions.

According to the LeadingGreen LEED GA Study Guide:

“In LEED v4 for BD+C: New Construction, the Energy and Atmosphere category offers a maximum of 33 points.”

These points are awarded across various credits like Optimize Energy Performance, Demand Response, and Renewable Energy.

receptacle load is the electrical load that is connected to the building’s electrical system through receptacles (also known as outlets or sockets). Receptacle load includes both regulated and non-regulated loads, such as computers, printers, monitors, lamps, refrigerators, microwaves, coffee makers, etc. Receptacle load does not include hard-wiredequipment, such as lighting fixtures, HVAC systems, or elevators12.

Receptacle load is one of the major components of plug and process loads (PPLs), which consume about 47% of primary energy in U.S. commercial buildings2. Reducing receptacle load can help improve building energy efficiency and achieve LEED certification. One of the strategies to reduce receptacle load is to use automatic receptacle controls, which are devices that turn off or reduce power to receptacles when they are not in use. Automatic receptacle controls are required by ANSI/ASHRAE/IES Standard 90.1-2019: Energy Standard for Buildings Except Low-Rise Residential Buildings, as well as NIH DRM 10.5.313.

Good site design benefits a project in which of the following ways: makes occupants comfortable by providing green spaces. Green spaces are areas of vegetation that improve the quality of life for building occupants and visitors by providing natural views, fresh air, shade, noise reduction, and recreational opportunities. They also reduce heat island effect, improve stormwater management, and sequester carbon dioxide. The LEED Green Associate Candidate Handbook states that one of the intents of the Sustainable Sites category is to “enhance occupant comfort by providing green spaces” [1, p. 13]. References: [LEED Green Associate Candidate Handbook], [Green Spaces | U.S. Department of Energy]

The conventional building process stages can vary depending on the type, size, and complexity of the project, but a general overview can be found in this article. According to the article, the stages are:

Planning: This is the stage where the project idea is conceived, the feasibility and budget are assessed, the design and engineering are developed, the permits and approvals are obtained, and the contractors and subcontractors are hired. This stage involves various disciplined practitioners on project teams, such as architects, engineers, surveyors, estimators, project managers, and lawyers.

Sitework and foundation: This is the stage where the project site is prepared, the utilities are connected, the excavation and grading are done, and the foundation is laid. This stage involves mainly civil engineers, site workers, foundation contractors, and building inspectors.

Rough framing: This is the stage where the structural components of the building are erected, such as walls, floors, roofs, stairs, and windows. This stage involves mainly carpenters, framers, roofers, and window installers.

Exterior construction: This is the stage where the exterior finishes of the building are applied, such as siding, brickwork, stucco, insulation, doors, and landscaping. This stage involves mainly exterior contractors, painters, landscapers, and door installers.

MEP (Mechanical, Electrical, Plumbing): This is the stage where the mechanical systems of the building are installed and tested, such as heating, ventilation, air conditioning (HVAC), plumbing, electrical wiring, lighting fixtures, fire alarms, and security systems. This stage involves mainly mechanical engineers, electricians, plumbers, HVAC technicians, and fire protection specialists.

Finishes and fixtures: This is the final stage where the interior finishes of the building are applied, such as drywall, flooring, cabinets, countertops, appliances, furniture, and accessories. This stage involves mainly interior designers, drywallers, flooring installers, cabinet makers, countertop installers, appliance installers, and furniture movers.

As you can see from this overview, each disciplined practitioner on project teams is involved in different stages of the conventional buildingprocess, depending on their expertise and role. However, they are also required to collaborate and coordinate with each other throughout the design process, which spans from the planning stage to the finishes and fixtures stage. The design process is an iterative and interactive process that involves creating, reviewing, and refining the design plans and specifications to meet the project goals and requirements1. Therefore, the answer is D. As required during design process.

Building a House Step by Step: A Guide From Start to Finish

What Is Disciplined Agile? - Project Management Institute

Retrocommissioning is a process applied to existing buildings to ensure that they continue to perform optimally for the current use. This process involves checking systems to see if they function as intended, making necessary repairs or improvements, and ensuring that building staff are trained in the operation and maintenance of systems. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

LEED Building Design and Construction Homes and Multifamily Low-rise is a rating system that applies to single-family homes and multifamily buildings between one and three stories. This rating system covers the design and construction phases of residential projects that areintended for human occupancy12. Projects that have more than three stories are not eligible for this rating system, but may qualify for other LEED rating systems, such as LEED Building Design and Construction Multifamily Mid-rise, which applies to multifamily buildings between four and eight stories

Adaptive reuse focuses on repurposing existing materials or elements to reduce construction waste and resource use. Reusing wood floors as wall panels exemplifies this principle, aligning with LEED credits under Materials and Resources​​.

The coordination of building and site systems should be addressed at the predesign stage to maximize the impact of integrative process. The integrative process is a method of design and construction that involves the collaboration and coordination of all project stakeholders from the beginning to achieve the project’s sustainability goals1. The predesign stage is the earliest phase of the project, where the project vision, scope, budget, schedule, and performance targets are defined2. By addressing the coordination of building and site systems at this stage, the project team can identify and analyze the interrelationships and synergies among various systems, such as energy, water, materials, indoor environmental quality, and site ecology3. This can help the team to optimize the design solutions, reduce costs and risks, enhance performance and quality, and avoid rework and conflicts later in the projec

Low cubicle partitions enhance the spread of daylight deeper into office spaces, improving natural lighting and reducing dependence on artificial lighting. This supports LEED credits under Indoor Environmental Quality, which aim to optimize daylight for better occupant health, productivity, and energy savings​​.

A list of materials to be diverted from disposal is a component of a construction waste management plan. A construction waste management plan is a document that outlines the goals, procedures, and responsibilities for diverting construction and demolition waste from landfills or incinerators. A list of materials to be diverted from disposal identifies the types and quantities of materials that can be recycled, reused, salvaged, or donated, as well as the destinations and methods for diversion. The other options are not components of a construction waste management plan. Projected cost savings from diverting waste is a potential benefit of implementing a construction waste management plan, but it is not a required component. Quantity of waste generated from excavated soil is a factor that affects the construction waste generation rate, but it is not a component of a construction waste management plan. Distance of the recycling facility from the project site is a factor that affects the transportation emissions and costs associated with diverting waste, but it is not a component of a construction waste management plan. References: LEED Green Associate Candidate Handbook, page 28; USGBC, [Materials and Resources], page 3.

The Energy Policy Act of 1992 (EPAct of 1992) is a United States government act that set goals, createdmandates, and amended utility laws to increase clean energy use and improve overall energy efficiency in the United States1. The EPAct of 1992 is a baseline standard for the Energyand Atmosphere prerequisite category in LEED v4, which aims to reduce the environmental and economic impacts of excessive energy use and promote the use of renewable and alternative energy sources2. The EPAct of 1992 establishes the minimum energy performancerequirements for buildings, such as lighting power density, HVAC efficiency, and water heating efficiency3. The EPAct of 1992 also provides tax incentives and grants for energy conservationand renewable energy projects1. The EPAct of 1992 was amended by the Energy Policy Act of 2005, which updated some of the provisions and standards of the original act4.

Increasing the amount of ventilation in an occupied space affects the Indoor Environmental Quality credit category. Ventilation is the process of supplying fresh outdoor air and removing stale indoor air from a building. Ventilation can improve the indoor environmental quality by diluting or removing indoor pollutants, such as carbon dioxide, volatile organic compounds, or particulate matter, and enhancing the thermal comfort and well-being of the occupants. The LEED Green Associate Candidate Handbook states that one of the strategies for achieving indoor environmental quality is to “increase ventilation rates” [1, p. 16]. References: LEED Green Associate Candidate Handbook, [Ventilation | U.S. Department of Energy]

Occupant surveys are tools that can be used to identify indoor environmental issues and prepare a corrective action plan to make necessary changes. Occupant surveys are questionnaires that collect feedback from the building users about their satisfaction, comfort, health, and productivity in relation to the indoor environmental quality (IEQ) factors, such as thermal comfort, indoor air quality, lighting quality, acoustic quality, and occupant control. Occupant surveys can help to identify the sources and causes of IEQ problems, as well as the potential solutions and improvements. Occupant surveys are also required for some LEED credits, such as IEQc7.2 Thermal Comfort, Verification1, which requires a corrective action plan if more than 20% of the occupants are dissatisfied with the thermal conditions in the space2. The other options are not directly related to identifying indoor environmental issues and preparing a corrective action plan, as they involve different types of tools or metrics that are not relevant for measuring occupant satisfaction and comfort.

Minimum acoustic performance is a prerequisite requirement that applies to LEED for Schools projects. The prerequisite aims to provide classrooms that facilitate better teacher-to-student and student-to-student communication through effective acoustic design. The prerequisite requires projects to meet the sound transmission class (STC) ratings for walls, floors, ceilings, doors, and windows; the background noise levels from HVAC systems; and the reverberation time for core learning spaces. By meeting the minimum acoustic performance, projects can improve the indoor environmental quality, enhance the learning outcomes, and reduce the health and stress impacts of noise. References: LEED v4 Reference Guide for Building Design and Construction, p. 545 1; [Acoustical Society of America website]

Setting project goals is the action that the design team should conduct first in order to incorporate green building strategies in a six-story commercial building renovation project. Setting project goals is an important step in the integrative process that defines the vision and expectations for the project’s sustainability performance and guides the decision-making throughout the design and construction phases. Setting project goals involves engaging key stakeholders, such as owners, users, designers, contractors, and operators, and identifying measurable objectives, targets, and metrics for various aspects of green building, such as energy efficiency, water conservation, material selection, indoor environmental quality, site selection, and transportation access. The LEED Green Associate Candidate Handbook states that one of the steps in the integrative process is to “establish sustainability goals early in project development” [1, p. 12]. References: LEED Green Associate Candidate Handbook, [Integrative Process | U.S. Green Building Council]

Open grid pavement, also known as permeable pavement, allows water to drain through it, reducing runoff and recharging groundwater supplies. It also tends to be lighter in color than traditional asphalt, which means it absorbs less heat from sunlight. This helps to reduce the urban heat island effect, which is a phenomenon where urban areas are significantly warmer than their rural surroundings due to human activities. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

An alternative commuting incentive program is a strategy that can be used to encourage alternative transportation methods, such as public transit, carpooling, biking, or walking. An alternative commuting incentive program can provide benefits or rewards for the employees or tenants who use alternative transportation modes, such as subsidies, vouchers, discounts, prizes, recognition, or preferential parking. This strategy can help to achieve LEED Location and Transportation Credit: Alternative Transportation1 . References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide

A building that is located on a site without access to public transportation can have a high environmental impact associated with how the occupants get to and from the building, such as greenhouse gas emissions, air pollution, energy consumption, and traffic congestion. One of the strategies that a project team can implement in order to reduce this impact is to provide incentives for carpooling, which is a form of alternative transportation that involves sharing a vehicle with other passengers who have similar travel routes or destinations. Providing incentives for carpooling can encourage the occupants to reduce their single-occupancy vehicle trips and use fewer vehicles, which can save fuel, reduce emissions, and lower parking demand. Some examples of incentives for carpooling are: subsidies, vouchers, discounts,prizes, recognition, or preferential parking12. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide2

To maintain the LEED Green Associate credential, you must earn 30 continuing education hours every two years, with at least six of those hours being LEED specific. This requirement ensures that LEED Green Associates stay up-to-date with the latest developments in green building practices and LEED rating systems. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Composting toilets operate without water, making them ideal for reducing potable water consumption. LEED promotes such innovative technologies for achieving water efficiency credits​​.

To qualify for any level of LEED certification, a project must meet all the prerequisites and achieve a minimum number of points based on the ratingsystem and the certification level1. The prerequisites are mandatory requirements that must be met before a project can earn any points2. The points are awarded for achieving optional credits that demonstrate environmental performance and innovation2. The LEED rating system consists of five broad categories: Building Design and Construction (BD+C), Interior Designand Construction (ID+C), Building Operations and Maintenance (O+M), Neighborhood Development (ND), and Homes3. Each category has different adaptations for specific project types and scopes, such as Schools, Retail, Hospitality, Data Centers, Warehouses and Distribution Centers, Healthcare, etc3. Each adaptation has a different number of prerequisites and credits, and a different point scale for each certification level4. The certification levels are: Certified, Silver, Gold, and Platinum1. The minimumpoints required for each level vary depending on the rating system and the adaptation, but generally range from 40 to 80 points1.

In this question, the project has achieved 53 points and six of eight prerequisites. This means that the project has failed to meet two prerequisites, which are mandatory requirements. Therefore, the project does not qualify for any level of LEED certification, regardless of the rating system or the adaptation. The answer is A. None.

=

The 4 Levels of LEED Certification and How to Achieve Them

LEED credits, prerequisites and points: How are they different?

LEED rating system

LEED rating system selection

Placing grilles, grates or mats at all major entrances is an example of permanent entryway systems used to reduce dust, dirt and contaminants brought into a facility. Permanent entryway systems are designed to capture dirt and particulates from people’s shoes and prevent them from entering the indoor environment. This improves the indoor air quality and reduces the need for cleaning and maintenance. The LEED Green Associate Candidate Handbook states that one of the strategies for achieving indoor environmental quality is to “use permanent entryway systems (grilles, grates, mats) to reduce particulate matter being brought into buildings at regular entryways” [1, p. 16]. References: LEED Green Associate Candidate Handbook, [Indoor Environmental Quality | U.S. Green Building Council]

Installing new flush valves or flow restrictors is a low-cost strategy to improve water efficiency. These devices reduce the amount of water used in each flush or flow, leading to significant water savings over time. Other strategies like installing subsurface cisterns to collect stormwater, using only compostable toilets throughout the facility, or incorporating an on-site blackwater treatment system can also improve water efficiency, but they typically involve higher upfront costs. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

The triple bottom line is a business concept that states firms should commit to measuring their social and environmental impact—in addition to their financial performance—rather than solely focusing on generating profit, or the standard “bottom line”1. The triple bottom line can be broken down into “three P’s”: profit, people, and the planet2. Firms can use these categories to conceptualize their environmental responsibility and determine any negative social impacts to which they might be contributing1.

Triple bottom line

Rainwater Management is a credit that aims to reduce runoff, improve water quality, and restore natural hydrology1. It is part of the Sustainable Sites category, which addresses the environmental impacts of the site selection, design, and construction23.

LEED v4 | HPAC Engineering2

LEED v4 for BUILDING DESIGN AND CONSTRUCTION - USGBC3

NC-v4.1 SSc4: Rainwater management | LEEDuser1

According to the Indoor Environmental Quality credit category of LEED, mechanical and electrical rooms are considered unoccupied spaces. These spaces are typically not intended for human occupancy, except for maintenance or operational purposes, and therefore do not require the same level of environmental control (such as ventilation or temperature control) as occupied spaces. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

 Life-cycle costing is an economic analysis method that considers all costs associated with an asset over its entire life cycle, from acquisition and installation to operation, maintenance, and disposal. In this case, the building manager is comparing the total costs of owning and operating two different boilers over their respective lifetimes. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

A minimum program requirement for LEED for New Construction and Major Renovations projects is to be a permanent building or space on existing land. This means that the project must be designed and constructed for a fixed location on land that is legally defined and has legal boundaries. The project cannot be a temporary structure, such as a trailer or a tent, or a movable structure, such as a boat or a vehicle. The LEED Green Associate Candidate Handbook states that this is one of the four minimum program requirements that apply to all LEED rating systems [1, p. 9]. References: LEED Green Associate Candidate Handbook, [Minimum Program Requirements | U.S. Green Building Council]

These strategies are core components ofLow Impact Development (LID)andgreen infrastructureapproaches for rainwater management:

“LID emphasizes… minimizing land disturbance, preserving vegetation, minimizing impervious cover…”

These help reduce runoff volume and replicate the site’s natural hydrology, improving rainwater management.

LEED for Building Operations and Maintenance (O+M) is the rating system that applies to existing buildings and interior spaces that have been fully operational and occupied for at least one year1. It focuses on performance-oriented sustainable strategies and outcomes, such as energy efficiency, water conservation, waste management, indoor environmental quality, and transportation2. LEED O+M can help existing buildings reduce their environmental impacts and improve their operations1.

 2 LEED rating system | U.S. Green Building Council1 LEED for Existing Buildings (LEED-EB) | Harvard Energy & Facilities.

Developing a construction purchasing policy is a strategy that promotes sustainable purchasing during construction. A construction purchasing policy is a document that outlines the criteria and requirements for selecting materials, products, and services that have lower environmental impacts and support human health during construction. A construction purchasing policy can address issues such as recycled content, regional materials, certified wood, low-emitting materials, rapidly renewable materials, durability, life cycle assessment, waste reduction, and indoor air quality. The other options are not strategies that promote sustainable purchasing during construction. Specifying green electronic equipment is relevant for operations purchasing, not construction purchasing. Reducing regional materials expense by 10% does not necessarily imply sustainable purchasing, as regional materials may have higher or lower environmental impacts depending on their source and transportation methods. Implementing an erosion and sedimentation plan is a strategy that protects water quality during construction, but does not address sustainable purchasing. References: LEED Green Associate Candidate Handbook, page 24; USGBC, [Guide to LEED Certification: Commercial], page 12.

Water closets, also known as toilets, are fixtures that use water to flush human waste into a sewer or septic system. The unit of measure for water closets is gallons (liters) per flush, which indicates the amount of water used for each flushing cycle. The water efficiency of water closets can vary depending on the design, technology, and regulation of the fixture. The LEED rating system encourages the use of water-efficient fixtures that reduce water consumption and wastewater generation12. References: LEED v4 Green Associate Candidate Handbook1, EPA’s WaterSense Toilets2

Systems thinking is a principle that is part of the integrated process, which is a collaborative and holistic approach to green building design, construction, and operation. Systems thinking involves understanding the interrelationships and interactions among the various components of a system, such as the building, its occupants, its site, its climate, and its energy sources. Systems thinking helps to identify synergies, optimize performance, avoid unintendedconsequences, and create multiple benefits for the project13. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide3

ASHRAE 62.1 is a standard that ensures adequate ventilation is supplied to building occupants. ASHRAE stands for the American Society of Heating, Refrigerating and Air-ConditioningEngineers, a professional organization that develops standards and guidelines for the design, operation, and maintenance of buildings. ASHRAE 62.1 is a standard that specifies the minimum ventilation rates and other measures for new and existing buildings that are intended to provide acceptable indoor air quality (IAQ) for the occupants. Ventilation is the process of supplying outdoor air to or removing indoor air from a building. Adequate ventilation is important for maintaining good IAQ, which can affectthe health, comfort, and productivity of the occupants13. References: LEED v4 Green Associate Candidate Handbook1, ASHRAE’s Standard 62.13

The statement that is the U.S. Green Building Council (USGBC) vision is: Buildings and communities will regenerate and sustain the health and vitality of all life within a generation. USGBC is a non-profit organization that promotes sustainability in the building industry through its LEED rating system, education programs, advocacy initiatives, and research projects. USGBC’s vision reflects its commitment to transformingthe built environment into one that supports human health, environmental quality, social equity, and economic prosperity1 . References: LEED v4 Green Associate Candidate Handbook1, USGBC’s Vision

Energy use intensity (EUI) is a measure of energy use per unit of floor space. It is calculated by dividing the total energy consumed by the building in one year (measured in kilowatt-hours or kilo-British Thermal Units) by the total gross floor area of the building (measured in square feet or square meters). EUI is a useful metric for comparing the energy performance of different buildings or benchmarking against national averages. EUI can vary depending on building type, climate, occupancy, and other factors. Generally, a lower EUI indicates better energy efficiency and lower environmental impact. References: What is Energy Use Intensity (EUI)?2; Energy Use Intensity (EUI)3

Maximizing daylighting opportunities with properly sized and oriented windows can significantly reduce a building’s energy use. By allowing more natural light into the building, the need for artificial lighting can be reduced, which in turn reduces electricity consumption. Additionally, if windows are properly oriented, they can also help with passive heating and cooling, further reducing energy use. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Low-emitting materials are those that have minimal or no emissions of volatile organic compounds (VOCs) and other harmful pollutants that can affect indoor air quality (IAQ)1. Specifying and installing low-emitting materials at the source can help prevent the negative effects of indoor pollutants by reducing the exposure of occupants and workers tothese substances2. Some examples of low-emitting materials are paints, coatings, adhesives, sealants, flooring, furniture, and insulation that meet the criteria of third-party certification programs such as Green Seal, Greenguard, or SCS3.

The reclaimed wood doors can be used to meet the Materials Reuse credit under the Building Product Disclosure and Optimization category in LEED v4. This credit rewards projects for reusing materials that have been recovered from existing buildings or products, and reduces the demand for virgin materials and the associated environmental impacts. The credit does not have any distance requirements for the source of the reused materials, unlike the Recycled Content and Regional Materials credits.

LEED v4: Building Design + Construction Guide1, page 36

LEED v4 and Low Carbon Building Materials2, page 19

According to the U.S. Energy Information Administration, space heating accounted for about 32% of energy use for all U.S. commercial buildings in 2018, followed by ventilation and lighting, each at about 10%1. Space heating is the largest single energy end use in U.S. office buildings as well2.

Use of energy in commercial buildings - U.S. Energy Information Administration (EIA)1

DataTrends: Energy Use in Office Buildings | ENERGY STAR2

A strategy for preventing light pollution is to install shielded fixtures. Light pollution is the excessive or inappropriate use of artificial lighting that can have adverse effects on human health, wildlife, ecosystems, and astronomy. Shielded fixtures are lighting devices that direct light downward and prevent light from escaping upward or sideways. Shielded fixtures can reduce light pollution by minimizing glare, sky glow, light trespass, and energy waste13. References: LEED v4 Green Associate Candidate Handbook1, International Dark-Sky Association’s Lighting Basics3

Access to quality transit is one of the criteria for the LEED v4 Location and Transportation category, which aims to reduce the environmental and human health impacts of transportation and promote sustainable site selection. By developing an urban site that is well-served by public transportation, the building owner can reduce the reliance on private vehicles, lower greenhouse gas emissions, and encourage alternative modes of travel123.

LEED v4: Building Design + Construction Guide1, page 25

LEED v4 Credit Tutorials: Location & Transportation (BD+C/ID+C)2

LEED v4 Q+A: Location and Transportation3

Installing permanent water submeters that measure the total potable water use for a building and associated grounds allows facility staff to track water consumption and identify leaks. This can help reduce water waste, lower utility bills, and improve water efficiency1. It can also contribute to the Water Metering credit in the Water Efficiency category of LEED v42.

How LEED Guides Users to Water Efficiency - Facilitiesnet1

Submeter at least two water subsystems | LEEDuser2

Building orientation is the element of design that can be used to take advantage of natural ventilation, solar energy and daylight. Building orientation refers to the position and direction of a building in relation to the sun, wind, and other environmental factors. By orienting a building properly, it can maximize the benefits of passive design strategies such as daylighting, natural ventilation, and solar energy. For example, a building can be oriented to face the south or north in temperate climates to capture more sunlight for heating and lighting, or to face the east or west in hot climates to avoid excessive solar heat gain and glare. A building can also be oriented to align with the prevailing wind direction to enhance natural ventilation and cooling. Building orientation can also affect the shape, size, and placement of windows, doors, roofs, and other architectural elements that influence the performance and comfort of a building. References: Passive Design Strategies | Sustainability Workshop, section “Building Massing & Orientation”; Back to Basics: Natural Ventilation and its Use in Different Contexts | ArchDaily, section “Orientation”; Courtyard configuration to optimize shading, daylight and ventilation …, section “Introduction”

The Forest Stewardship Council (FSC) is an independent, non-governmental organization that promotes responsible management of the world’s forests. FSC sets standards for forest management that ensure environmental, social, and economic benefits for present and future generations. FSC also certifies forest products that meet its standards through a chain of custody system that tracks the origin and processing of the products. A wood product that is certified by FSC is guaranteed to be harvested from a well-managed source that protects biodiversity, respects indigenous rights, maintains forest productivity, and supports local communities1 . References: LEED v4 Green Associate Candidate Handbook1, FSC’s What We Do

High reflectance roofing materials can help reduce heat gain and peak air temperatures by reflecting more sunlight away from the building, thereby reducing the amount of heat absorbed by the roof. This can lead to lower cooling loads and energy use for air conditioning. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

The Guide specifies:

“Use nonpotable water for irrigation such as captured rainwater, graywater or municipally reclaimed wastewater…”

Potable water use is discouraged, and blackwater cannot be used unless treated.

ASHRAE 90.1-2010, Appendix G is the referenced standard for defining the baseline building performance for energy simulation modeling in LEED v4 for Building Design and Construction. The baseline building is a hypothetical building that represents the minimum energy performance required by ASHRAE 90.1-2010, which is a standard for energy efficiency in buildings. The baseline building is used as a benchmark to compare the proposed design of the project and to calculate the percentage of energy cost savings achieved by the project. The baseline building performance is evaluated by following the procedures and assumptions specified in Appendix G of ASHRAE 90.1-2010, such as building envelope, lighting, HVAC systems, service water heating, and renewable energy.

The other options are not relevant to the question, as they are standards for different aspects of green building, such as thermal comfort (ASHRAE 55-2010), air filtration (ASHRAE 52.2-2007), and ventilation (ASHRAE 62.1-2010).

Regional priority credits are bonus points that are awarded to projects that achieve credits that address geographically specific environmental, social equity and public health priorities. These credits are not new LEED credits, but instead are existing credits that USGBC regional councils and chapters have designated as being particularly important for their areas. The goal of regional priority credits is to incentivize project teams to address the most critical and relevant environmental issues in their regions, such as water scarcity, air quality, habitat loss, or social equity12. Regional priority credits are based on the project’s geolocation (latitude and longitude coordinates), which can be entered and confirmed during project registration in LEED Online2. Each project can earn up to four regional priority bonus points, one for each regional priority credit achieved3.

Teams organize and work as part of an integrative process by working in small groups and as a whole with iterative processes. The integrative process is a method of design and construction that involves the collaboration and coordination of all project stakeholders from the beginning to achieve the project’s sustainability goals1. The integrative process requires teams to work in small groups, such as subcommittees or task forces, to focus on specific aspects of the project, such as energy, water, materials, indoor environmental quality, and site ecology2. The small groups then report back to the whole team and share their findings and recommendations, allowing for feedback and integration among different disciplines and systems2. The integrative process also requires teams to work with iterative processes, which means that they repeat and refine the design and analysis cycles until they reach the optimal solutions that meet the project’s performance targets3. The iterative processes enable teams to explore various scenarios, test assumptions, identify synergies and trade-offs, and evaluate the life-cycle impacts of their design decisions34.

Integrative process | U.S. Green Building Council

LEED v4 | U.S. Green Building Council

The Integrative Process in LEED V4 —ArchEcology

New LEED Pilot Credit Establishes an Integrative Process for Health Promotion

LEED Integrative Process Credit Explained - Projectific, Inc.

LEED credits in the Sustainable Sites category emphasize minimizing light trespass:

“Good exterior lighting design results in the reduction of three forms of light pollution: uplight, glare, and light trespass.”

Light trespass refers to unwanted light spilling over beyond the site boundary, negatively affecting adjacent properties and ecosystems.

Sustainable forestry is the practice of managing forest resources in a way that meets the current and future needs of humans forforest products, while also conserving and enhancing the ecological, social, and economic values of the forest and its surrounding landscape1. One of the key aspects of sustainable forestry is to maintain the biodiversity of the forest, which refers to the variety and abundance of living organisms, such as plants, animals, fungi, and microorganisms, and their interactions within the forest ecosystem2. Biodiversity is important for the health and resilience of the forest, as it provides essential ecosystem services, such as carbon sequestration, water purification, soil formation, nutrient cycling, pollination, pest control, and climate regulation23. Biodiversity also supports the livelihoods, cultures, and well-being of forest-dependent communities and indigenous peoples23.

What is sustainable forestry?

Why is biodiversity important for forests?

LEED v4 - FSC United States

Sizing the building appropriately means designing the building to meet the needs and expectations of the occupants, without creating excess space that would require more energy to heat, cool, and light. This strategy reduces the energy demand of the building and also saves on construction costs and materials.

LEED v4 for Building Design and Construction, p. 36

LEED Green Associate Candidate Handbook, p. 11

As per the LEED prerequisite for Environmental Tobacco Smoke (ETS) Control:

“Prohibit smoking in the building and on property within 25 feet from operable windows, entries and air intakes.”

Building entrances are particularly sensitive areas where smoke can enter the ventilation system.

According to a study completed by the Heschong Mahone Group, providing increased daylighting in schools can improve student test scores by 7%-18%. Daylighting is the practice of placing windows, skylights, other openings, and reflective surfaces so that sunlight (direct or indirect) can provideeffective internal lighting. Particular attention is given to daylighting while designing a building when the aim is to maximize visual comfort or to reduce energy use. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

A scorecard rule for LEED Credit Point Allocation is that there is a maximum of 100 base points available for each rating system. These points are distributed among the different credit categories based on their relative contribution to the overall environmental impact and human health benefits of a project. The point allocation process is informed by a weighting methodology that uses life cycle assessment and expert judgment to assign weights to each of the LEED impact categories. The impact categories reflect the goals and priorities of LEED, such as reversing climate change, enhancing human health, protecting water resources, and promoting social equity. References: LEED v4 Impact Category and Point Allocation Process Overview1; LEED scorecard5

Unless mitigated, resource consumption over the life of a conventional building incrementally increases the total emissions footprint. This is because conventional buildings often use non-renewable resources for energy and materials, which contribute to greenhouse gas emissions during extraction, production, use, and disposal. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources