LEED-AP-O+M LEED AP Operations + Maintenance (LEED AP O+M) Questions and Answers

If a manufacturer does not specify the calibration interval for utility meters used for benchmarking building energy performance, the assessment team may specify a reasonable calibration interval not to exceed three years. This calibration ensures the accuracy and reliability of the data collected for energy performance analysis.References:LEED v5 O+M: Existing Buildings beta version

For the Energy and Atmosphere Prerequisite, Minimum Energy Performance, the project team must establish an ENERGY STAR® Portfolio Manager profile. This is a requirement for all building types to benchmark energy performance and track improvements over time.

References: The LEED v4.1 reference materials outline the necessity of establishing an ENERGY STAR® Portfolio Manager profile as part of the prerequisite for Minimum Energy Performance123.

Regardless of the building type, for the Energy and Atmosphere Prerequisite, Minimum Energy Performance, the project team must establish an ENERGY STAR® Portfolio Manager profile. This platform is used to benchmark the building's energy performance against similar buildings and track energy consumption over time. The ENERGY STAR Portfolio Manager is a critical tool for understanding and improving a building's energy efficiency, serving as a standardized framework for measuring and reporting energy use.

References:This requirement is highlighted in the LEED AP Operations + Maintenance reference guide, particularly in the section covering the Energy and Atmosphere Prerequisite, Minimum Energy Performance. The guide outlines the steps for setting up an ENERGY STAR Portfolio Manager profile and its importance in the LEED certification process.

The LEED AP Operations + Maintenance (LEED AP O+M) V4.1 guide specifies that for the Energy and Atmosphere Prerequisite, Minimum Energy Performance, the allowed maximum tenant space exclusion is 10% of the gross floor area. This means that when calculating energy performance, up to 10% of the total floor area of the building can be excluded. This could be due to various reasons such as spaces being unoccupied or not in use.

References: = LEED v4: Building Operations + Maintenance Guide, LEED v4: Building Design + Construction Guide, Minimum Energy Performance Calculator - ASHRAE 90.1 - 2010, LEED v4 energy update – U.S. Green Building Council

The Energy and Atmosphere Prerequisite, Minimum Energy Performance, allows for certain exclusions to accommodate diverse building types and uses. One such provision permits the exclusion of up to 10% of the gross floor area (GFA) from the energy performance calculations. This allowance is designed to provide flexibility for spaces that may not be fully occupied or operational during the performance period, such as tenant spaces undergoing renovation or spaces with atypical energy usage. By excluding a limited portion of the GFA, the prerequisite acknowledges the variability in building occupancy and use, ensuring that the energy performance assessment is both fair and representative of the building's typical operations.

References:

• The allowance for excluding up to 10% of the gross floor area from the energy performance calculations is detailed in the LEED for Building Operations and Maintenance reference guide, specifically under the Energy and Atmosphere Prerequisite, Minimum Energy Performance. This guideline is part of the LEED AP O+M trainingmaterials, which emphasize the importance of accommodating diverse building uses and occupancy levels in the pursuit of sustainable building operations.

For the Location and Transportation Credit, Alternative Transportation, Option 1, all building visitors should be invited to participate in the transportation survey during the survey period. This requirement ensures that the survey data accurately reflects the transportation patterns of not only the regular building occupants but also the visitors, providing a comprehensive view of transportation choices associated with the building.References:LEED AP Operations + Maintenance Reference Guide, Location and Transportation section.

Rainwater harvesting is a strategy that can be used to reduce indoor water use, which is a part of the Water Efficiency Credit under the LEED AP Operations + Maintenance (LEED AP O+M) V4.1. By collecting and using rainwater for non-potable uses such as toilet flushing or irrigation, buildings can significantly reduce their demand for municipally treated water. This aligns with the goals of the Indoor Water Use Reduction credit, which encourages the reduction of potable water usage inside the building1.

References: LEED v4: Building Operations + Maintenance Guide

The Water Efficiency Prerequisite, Indoor Water Use Reduction, under LEED AP O+M V4.1, includes the reduction of water use in various indoor appliances. The appliances included in this prerequisite are those that contribute significantly to indoor water use. Among the options provided, residential clothes washers and dishwashers are included. These appliances use a significant amount of water and are therefore important targets for water use reduction1.

References:

• LEED v4 Indoor Water Use Reduction Calculator
• Indoor water use reduction | U.S. Green Building Council
• LEED v4 water efficiency credits: Do you know the new standards?
• LEED QUALIFICATION GUIDE - v4 - Sloan

The Location and Transportation Credit for Alternative Transportation under the LEED AP Operations + Maintenance (LEED AP O+M) V4.1 encourages projects to implement strategies that promote the use of alternative transportation. Among the options provided, implementing an alternative transportation program and conducting a transportation survey is the strategy that allows the project to achieve maximum points. This strategy not only promotes the use of alternative transportation but also provides data that can be used to evaluate the effectiveness of the program and make necessary adjustments.

References: LEED v4: Building Operations + Maintenance Guide, LEED AP with specialty

This answer is correct because it matches the requirement of the Energy and Atmosphere Credit, Optimize Energy Performance, which aims to reduce the environmental and economic impacts associated with excessive energy use. The credit requires projects todemonstrate an improvement in energy performance compared to a baseline building, using one of the three options available.For buildings eligible to receive an energy performance rating using the Environmental Protection Agency’s ENERGY STAR® Portfolio Manager tool, the option is to achieve a rating of at least 50, which corresponds to the median energy performance of similar buildings nationwide1. The other options are incorrect because they are either higher than the minimum rating or not applicable to this option.

References: =LEED v4.1 OPERATIONS AND MAINTENANCE - WAP Sustainability Consulting, page 32;LEED v4: Building Operations + Maintenance Guide | U.S. Green Building Council, page 32;ENERGY STAR Portfolio Manager

Installing and maintaining a conductivity meter is a strategy that improves cooling tower water efficiency. Conductivity meters help optimize the cycles of concentration, reducing water and chemical use by accurately measuring the water’s mineral content.

References: The LEED v4.1 O+M reference materials recommend the use of conductivity meters as part of water efficiency best management practices for cooling towers1234.

1.Food waste must be diverted from disposal in landfills or incineration facilities by donating, composting, or anaerobic digestion1. The other options are incorrect because they are product recycling requirements that apply to all LEED AP O+M projects, not just Schools and Hospitality.

References: =

• LEED v4.1 O+M Reference Guide, page 223
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 105
• LEED v4 AP O+M Mock Exam, page 82 =========================================
• Within the LEED AP Operations + Maintenance rating system, particularly for Schools and Hospitality projects, there is a heightened focus on sustainable waste management practices, including the recycling of specific products. One area of particular importance for these project types is the management of food waste due to the significant volumes generated and the opportunities for diversion from landfills through composting, donation, or other sustainable waste management practices.
• Recycling requirements for batteries and lamps, electric-powered equipment, and office equipment, appliances, and audiovisual equipment are generally applicable across various project types. However, the specific emphasis on food waste recycling in Schools and Hospitality projects aligns with the operational characteristics of these facilities, where food service and preparation are integral activities. By focusing on food waste recycling, these projects can significantly reduce their environmental impact, contribute to community well-being, and often achieve operational cost savings.
• References:The LEED v4 for Building Operations and Maintenance reference guide provides a detailed overview of the Materials and Resources credit category, which includes requirements for waste management. It outlines the specific emphasis on food waste management for Schools and Hospitality projects, recognizing the unique opportunities and challenges these project types face in achieving sustainable waste management practices.

To achieve exemplary performance in the Materials and Resources Credit, Solid Waste Management - Ongoing, a diversion percentage of 90% for ongoing consumables is required. This high level of diversion demonstrates an advanced commitment to reducing waste and promoting recycling and composting. By diverting 90% of ongoing consumables from the landfill, projects significantly contribute to sustainability goals by minimizing their environmental footprint related to waste.

References:The LEED AP Operations + Maintenance reference guide specifies the criteria for exemplary performance in waste management, including the 90% diversion target. This ambitious goal underscores the importance of comprehensive waste reduction strategies in LEED-certified projects.

The correct answer is A because zero occupants should be entered into Portfolio Manager for the vacant office space, as stated in the LEED v4.1 O+M Reference Guide1.Portfolio Manager is an online tool that allows projects to benchmark their energy and water performance and track their greenhouse gas emissions. The number of occupants entered into Portfolio Manager should reflect the actual occupancy of the building, not the potential occupancy. The other options are incorrect because they are arbitrary numbers that do not reflect the reality of the vacant office space.

References: =

• LEED v4.1 O+M Reference Guide, page 137
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 88
• LEED v4 AP O+M Mock Exam, page 86 =========================================

The Indoor Environmental Quality Prerequisite for Minimum Indoor Air Quality Performance has a minimum occupancy requirement to ensure that indoor air quality (IAQ) assessments accurately reflect the conditions experienced by building occupants. This prerequisite focuses on achieving acceptable IAQ within the building by meeting or exceeding local codes or ASHRAE standards, ensuring the health and well-being of the occupants.References:The LEED O+M Reference Guide's Indoor Environmental Quality section detailsthe requirements for maintaining minimum IAQ performance, including the importance of considering occupancy levels in IAQ assessments.

This strategy meets the requirement of the Sustainable Sites Credit, Rainwater Management, which aims 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. The credit requires projects to retain the runoff from the developed site for at least the 80th percentile of rainfall events, using low-impact development and green infrastructure practices. Minimizing impervious cover reduces the amount of runoff generated and allows more infiltration and evapotranspiration of rainwater.

References: =LEED v4.1 OPERATIONS AND MAINTENANCE - WAP Sustainability Consulting, page 26;Achieving SSc Rainwater Management in LEED v4.1;Rainwater Management For LEED v4.1 Projects | Green CE

Low impact development (LID) rainwater management programs are designed to manage stormwater close to its source by mimicking a site’s pre-development hydrology through the use of design techniques that infiltrate, filter, store, evaporate, and detain runoff close to its source. Treatment and potential reuse of rainfall on-site is a key result of such programs, aiming to reduce runoff volume and improve water quality.

References: The LEED v4.1 O+M reference materials discuss the integration of green infrastructure and low-impact development strategies with the Rainwater Management Credit, which includes on-site treatment and reuse of rainwater1234.

The calculation used to achieve the Materials and Resources Credit, Purchasing - Ongoing, focuses on the cost of compliant furniture. This approach aligns with the intent of the credit, which is to encourage the purchase of sustainable and environmentally friendly products. By assessing the cost of compliant furniture, the credit incentivizes the selection of products that meet specific environmental criteria, thereby contributing to a more sustainable procurement practice.

For existing buildings pursuing LEED certification, the establishment period requirements include having a Site Management Policy. This policy is crucial for outlining the practices that will maintain the site sustainability over time.

References: The LEED v4.1 O+M guide and additional resources emphasize the importance of a Site Management Policy as part of the establishment period requirements to ensure ongoing sustainability and compliance with LEED standards1.

In the Materials and Resources (MR) section of LEED, furniture is included in credit calculations, particularly in credits related to sustainable purchasing and waste management. Furniture plays a significant role in the environmental impact of a building's interior due to its material content, durability, and potential for reuse or recycling. Including furniture in MR calculations encourages the selection of sustainable products and practices, such as purchasing reused or recycled furniture, and implementing take-back programs or recycling initiatives at the end of the furniture's life cycle.

References:This inclusion is outlined in the LEED AP Operations + Maintenance reference materials, where it details how furniture contributes to various MR credits, emphasizing the importance of sustainable purchasing decisions and waste management practices that encompass furniture.

This answer is correct because these are the two factors that affect the heat island reduction potential of the materials. The SRI is a measure of how well a material reflects solar radiation and stays cool in the sun. The higher the SRI, the lower the surface temperature and the less heat absorbed by the material. The unbound percentage of the open-grid pavement system is the ratio of the area that is not covered by the paving material to the total area of the system. The higher the unbound percentage, the more permeable the system and the more water infiltration and evaporation, which also reduce the surface temperature. The vegetated roof system does not need to have a specific SRI value, as long as it uses native or adapted plant species that provide shade and evapotranspiration. The open-grid pavement system does not need to have a specific SRI value, as long as it has at least 50% unbound area.

References: =LEED v4.1 OPERATIONS AND MAINTENANCE - WAP Sustainability Consulting, page 26;SpecTopics: Heat Island Reduction Credit and LEED V4/V4.1 - Carlisle SynTec;LEED AP O+M - Heat Island Reduction - GBES

 The maximum number of points that can be achieved by exemplary performance in the Innovation Category is two. Exemplary performance credits are a part of the Innovation in Design category and are awarded for achieving double the credit requirements or the next incremental percentage threshold1. However, it’s important to note that while there are multiple strategies for earning innovation points, there are limits to how many points can be earned for each type of strategy2.

References: Understanding Innovation in Design & Exemplary Performance Credits in LEED, Guide to Exemplary Performance Credits in LEED-NC v4, I’m confused about how many points I can earn for each strategy, NC-v4.1 INc1: Innovation | LEEDuser.

In the LEED AP Operations + Maintenance rating system, the Innovation category allows projects to earn points for employing innovative strategies that demonstrate quantifiable environmental benefits beyond what is covered by the standard LEED credits. Projects can earn points in this category through innovative performance strategies, LEED Pilot Credits, or by having a LEED Accredited Professional on the team.

Exemplary performance refers to achieving performance that significantly exceeds the requirements of existing LEED credits. However, within the Innovation category, there is a limit to the number of points that can be achieved through exemplary performance. Specifically, a project can earn a maximum of two points for exemplary performance under theInnovation category. This encourages projects to explore a range of innovative strategies while also maintaining a balanced approach to sustainability across all categories.

References:The LEED v4 for Building Operations and Maintenance reference guide provides detailed information on the Innovation category, including the criteria for earning points through innovative strategies, the use of Pilot Credits, and the role of a LEED Accredited Professional. It also specifies the limit on points achievable through exemplary performance, reinforcing the comprehensive approach to sustainability encouraged by the LEED rating system.

The correct answer is C because the baseline water usage is 150% of the water use for a building with a certificate of occupancy dated 1993 or later, as stated in the LEED v4.1 O+M Reference Guide1.The baseline water usage is determined by calculating the estimated usage assuming Energy Policy Act-compliant fixtures2. The other options are incorrect because they either have the wrong percentage or the wrong year for the baseline water usage.

References: =

• LEED v4.1 O+M Reference Guide, page 97
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 77
• LEED v4 AP O+M Mock Exam, page 90 =========================================

For the Materials and Resources Credit, Solid Waste Management - Ongoing, it is essential to accurately measure and document the amount of waste generated and diverted from landfills. This can be done by tracking the waste in terms of weight (pounds or kilograms) or volume (cubic yards or cubic meters). This method provides the most accurate accounting of waste management efforts and is a requirement for documenting performance for this credit. It allows for the calculation of diversion rates and effectiveness of waste reduction strategies.

References:

• The LEED for Building Operations and Maintenance Reference Guide details the requirements for waste tracking and documentation. This process is key to achieving the Solid Waste Management - Ongoing credit, which is aimed at reducing the amount of waste sent to landfills and incineration facilities, as emphasized in LEED AP O+M training materials.

In a scenario where the existing HVAC system was not designed to accommodate the required filters for Indoor Environmental Quality Credit, Enhanced Indoor Air Quality Strategies, Option 2, Filtration, but is otherwise efficient and operating well, replacing the existing HVAC system with an air handler that can accommodate the filters is a strategy to achieve credit. This option allows for the integration of higher efficiency filters without compromising the performance of the HVAC system.

The Energy and Atmosphere Prerequisite, Minimum Energy Performance requires 12 months of metered energy use data after occupancy. This duration is necessary to provide a comprehensive view of the building’s energy consumption patterns throughout the different seasons of the year.

References: The LEED v4.1 O+M reference guide specifies that a full year of energy data is needed to accurately assess a building’s performance for the Minimum Energy Performance prerequisite1234.

To fulfill the Energy and Atmosphere Prerequisite, Minimum Energy Performance, LEED requires a building to demonstrate energy use through 12 months of metered energy datapost-occupancy. This duration ensures that a full annual cycle is considered, accounting for seasonal variations in energy consumption. The data collected over this period provides a comprehensive overview of the building's energy performance, enabling accurate benchmarking against LEED standards and identifying opportunities for energy efficiency improvements.

References:This requirement is specified in the LEED AP Operations + Maintenance reference guide, under the section detailing the Energy and Atmosphere Prerequisite, Minimum Energy Performance. The guide explains the rationale behind the 12-month period and how it contributes to a reliable assessment of the building's energy use.

Impervious surfaces exacerbate the environmental concern of contaminated runoff harming aquatic life. These surfaces prevent rainwater from soaking into the ground, leading to increased runoff that can carry pollutants into water bodies, negatively affecting aquatic ecosystems.

References: Impervious surfaces are known to alter natural hydrology, leading to increased runoff and potential contamination of water bodies, which can harm aquatic life123.

The use of products with low emissions is a strategy that reduces the impact of materials used in building operation and maintenance on indoor air quality. These products, which include paints, adhesives, furniture, and flooring, emit fewer volatile organic compounds (VOCs) and other harmful substances into the indoor environment, thereby improving indoor air quality.

References: LEED v4: Building Operations + Maintenance Guide, LEED v4 | U.S. Green Building Council, Improving Indoor Air Quality | US EPA, Sustainable O&M Practices | WBDG - Whole Building Design Guide

Toner cartridges are considered an ongoing purchase, as they are consumable items that are regularly replaced as part of the normal operation and maintenance of the building. The other options are not ongoing purchases, as they are durable goods that are not frequently replaced or disposed of.

References: =

• LEED v4.1 O+M Guide, page 48
• Solid waste management - ongoing, U.S. Green Building Council
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 157

The owner is the only person who is required to be listed on the LEED project registration page. The owner is the entity that has the authority to implement the LEED project and sign the certification agreement. The owner’s representative, who can be a LEED AP or another person authorized by the owner, can register the project on behalf of the owner, but must also upload a confirmation of agent authority form. The primary architect, the commissioning agent, and other project team members are not required to be listed on the registration page, but can be added later as team members in LEED Online.

References:

• Registering a project in LEED Online
• LEED AP O+M Candidate Handbook, page 7

The correct answer is A because a table of lighting controls installed is the required documentation for Option 1.Lighting Controls in Indoor Environmental Quality Credit, Interior Lighting, as stated in the LEED v4.1 O+M Reference Guide1.The table must include the type and location of each lighting control device, the controlled lighting power, and the percentage of lighting power controlled by each device1. The other options are incorrect because they are either not required or relevant for this option.

References: =

• LEED v4.1 O+M Reference Guide, page 251
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 115
• LEED v4 AP O+M Mock Exam, page 84 =========================================

The Indoor Environmental Quality Credit for Thermal Comfort under the LEED AP Operations + Maintenance (LEED AP O+M) V4.1 requires continuous monitoring of certain parameters in occupied spaces. Among the options provided, air temperature and humidity are the parameters that need to be continuously monitored. These parameters are crucial in maintaining a comfortable thermal environment for building occupants.

References: LEED v4: Building Operations + Maintenance Guide, LEED AP with specialty

This answer is correct because it matches the requirement of the Materials and Resources Credit, Purchasing - Lamps, which aims to reduce the environmental and health impacts of mercury used in lamps.The credit requires projects to purchase lamps that have a mercury content of 80 picograms per lumen hour or less for at least 90% of the total number of lamps purchased during the performance period1. The other options are incorrect because they either have a higher mercury content threshold or a higher percentage of lamps to meet the threshold.

References: =LEED v4.1 OPERATIONS AND MAINTENANCE - WAP Sustainability Consulting, page 40;LEED v4: Building Operations + Maintenance Guide | U.S. Green Building Council, page 40.

For projects seeking to comply with Option 1, Lighting Control of the Indoor Environmental Quality Credit for Interior Lighting, LEED guidelines specify that at least 70% of individual occupant spaces must have individual lighting controls. These controls allow occupants to adjust lighting to suit their task needs and preferences, contributing to energy savings and increased occupant comfort and productivity.

References:

• This requirement is outlined in the LEED for Building Operations and Maintenance (O+M) Reference Guide, under the Indoor Environmental Quality Credit for Interior Lighting. It is a well-known requirement discussed in LEED AP O+M training and resources, promoting energy efficiency and occupant comfort in the interior environment.

The Indoor Environmental Quality Credit, Occupant Comfort Survey is a tool used to assess the performance and success of the design of a space. It gathers accurate and reliable feedback from the building occupants. In a sample survey, approximately 33% of the total building occupants responded1. This suggests that a minimum of 30% of building occupants must respond to the survey.

References: 

https://cbe.berkeley.edu/research/occupant-survey-and-building-benchmarking/

https://leeduser.buildinggreen.com/sites/default/files/credit_documentation/EQc2%201_Occupant-Comfort-Survey%20Results_SAMPLE.pdf

CFC-11 was phased out due to the Montreal Protocol because it is a chlorofluorocarbon (CFC) that contributes to ozone depletion. The protocol aimed to phase out substances with high ozone-depleting potential (ODP).

References: The Montreal Protocol on Substances that Deplete the Ozone Layer is a global agreement that regulates the production and consumption of nearly 100 man-made chemicals referred to as ozone-depleting substances (ODS), including CFCs1.

There are synergies between the Materials and Resources Prerequisite, Facility Maintenance and Renovation Policy, and the Indoor Environmental Quality Credit, Indoor Air Quality Management Program. Both focus on maintaining high environmental and health standards within the building, with the former emphasizing sustainable maintenance and renovation practices, and the latter concentrating on maintaining optimal indoor air quality through proper management and practices.

References:The interconnectedness of these prerequisites and credits is discussed in the LEED AP Operations + Maintenance documentation, highlighting how sustainable maintenance and renovation practices directly contribute to better indoor air quality, thereby supporting the objectives of the Indoor Air Quality Management Program.

The Location and Transportation Credit, Alternative Transportation: Option 1. Transportation Survey, is primarily concerned with understanding and improving the commuting patterns of the people who work at the facility on a regular basis. In the case of an in-patient hospital project, this would be the hospital employees. The goal is to reduce the environmental impact of commuting by encouraging alternative transportation methods such as public transit, carpooling, biking, or walking.

References: LEED AP Operations + Maintenance (LEED AP O+M) V4.1 by usgbc.org1

When identifying regularly occupied spaces in a project, the LEED AP should consider the maximum number of intended occupants, whether standing or seated, in each space. This is important for ensuring consistency in floor area values across various credits, such as those related to indoor environmental quality or space utilization. The consideration of occupants helps in determining space functionality and occupancy patterns, which are critical for accurate LEED assessments.References:LEED AP Operations + Maintenance Reference Guide, Indoor Environmental Quality section.

Low Impact Development (LID) practices manage stormwater by using natural or man-made systems to filter and recharge stormwater into the ground12. A rain garden is an example of a LID technique for rainwater management3. It is a planted depression that allows rainwater runoff from impervious urban areas, like roofs, driveways, walkways, parking lots, and compacted lawn areas, to be absorbed. This reduces rain runoff by allowing stormwater to soak into the ground (as opposed to flowing into storm drains and surface waters which causes erosion, water pollution, flooding, and diminished groundwater).

References:

• Low Impact Development (LID) Practices: A Review on Recent Developments, Challenges and Prospects | Water, Air, & Soil Pollution
• Enhancing stormwater management with low impact development (LID): a review of the rain barrel, bioretention, and permeable pavement applicability in Indonesia | Water Science & Technology | IWA Publishing
• Managing Rainwater with Low-Impact Development (LID) for LEED Credits

Soil testing is an operational element that needs to be tracked only once during the performance period to meet the Sustainable Sites, Site Management Credit. This is because soil testing provides a snapshot of the soil’s condition, which is unlikely to change significantly over short periods.

References: The LEED v4.1 O+M guide indicates that certain site management practices, such as soil testing, do not require continuous monitoring but should be documented at least once during the performance period to ensure compliance with the credit requirements1.

The correct option regarding project boundaries in LEED is that the gross floor area (GFA) of the LEED project should be no less than 2% of the gross land area within the LEED project boundary. This requirement ensures that the project size is significant enough relative to the land area to make the application of LEED meaningful and impactful.References:LEED AP Operations + Maintenance Reference Guide, Project Site Factorssection.

The view factor is the percentage of the floor area that has a direct line of sight to the perimeter vision glazing. According to the LEED Reference Guide for Building Operations and Maintenance, the view factor for the diagram below is 2, which means that 75% or more of the floor area has a direct line of sight to the perimeter vision glazing.

References: = LEED Reference Guide for Building Operations and Maintenance, v4 Edition, Indoor Environmental Quality, Daylight and Quality Views, page 5811

The WaterSense label, or a local equivalent, is required for all newly installed fittings and fixtures that are eligible for the label, as per the LEED v4 update. This label ensures that the fixtures used in a LEED building meet both water efficiency and high performance testing standards1. The WaterSense label is backed by independent, third-party certification and products bearing this label are verified to perform as well or better than their less efficient counterparts2. They are also certified to use at least 20 percent less water3.

References:

• The WaterSense Label | US EPA
• About WaterSense | US EPA
• LEED Qualification Guide | Sloan

The correct answer is D because the meter(s) must record data at a minimum of 15 minute intervals to comply with Energy and Atmosphere Credit, Advanced Energy Metering, as stated in the LEED v4.1 O+M Reference Guide1.This requirement ensures that the meter data is granular enough to capture the variations in energy consumption and demand, and to enable the identification of energy saving opportunities1. The other options are incorrect because they are either not required or relevant for this credit.

References: =

• LEED v4.1 O+M Reference Guide, page 149
• Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 91
• LEED v4 AP O+M Mock Exam, page 87 =========================================

ASHRAE 55-2010 is the standard applicable for compliance with the Indoor Environmental Quality Credit, Thermal Comfort. This standard outlines the conditions for acceptable thermal environments and is used for the design, evaluation, and operation of buildings to meet thermal comfort requirements.

References: The LEED v4.1 O+M reference guide specifies that ASHRAE 55-2010 is the standard for thermal comfort, focusing on ensuring quality thermal environments conducive to occupants’ comfort and well-being1.

In LEED, for maintaining continuous performance monitoring, the maximum length of time allowed for a gap before needing to restart the performance period is two full weeks. This requirement ensures that performance data is consistent and reliable, providing an accurate representation of the building's operational performance.

• Reducing lawn areas can significantly impact operational costs related to landscaping maintenance, irrigation, and the potential need for chemical fertilizers and pesticides. By minimizing lawn areas and potentially replacing them with native or adapted vegetation, the site improvement plan can contribute to lower operational costs, water conservation, and improved site sustainability.References:This strategy is supported by the Sustainable Sites category in the LEED O+M Reference Guide, which encourages practices that reduce the environmental impact of landscaping and site management.