Free LEED AP O+M Practice Test Questions and Answers (2026) | Cert Empire Practice Questions

In relation to the baseline water usage for buildings with respect to their certificate of occupancy

dates, for buildings dated 1995 or later, the baseline is set at 120% of the water use that would result

if all fixtures met the code requirements. This guideline is part of the LEED Operations and

Maintenance Rating System's approach to evaluating water use in buildings and setting a baseline for

comparison and improvement. Reference: LEED v5 O+M: Existing Buildings beta version

Increasing the treatment levels of potable makeup water is an allowable method to increase cooling

tower cycles of concentration. This is because treating the makeup water can help control the

buildup of minerals and other impurities, allowing the system to operate more cycles before

requiring blowdown.

Reference: The LEED v4.1 O+M reference guide and other LEED resources emphasize the importance

of water treatment to manage cycles of concentration in cooling towers. Proper treatment helps

maintain water quality and efficiency, which is crucial for achieving higher cycles of concentration

without causing scale and corrosion problems1.

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.

Reference: LEED AP Operations + Maintenance Reference Guide, Project Site Factors section.

The use of electric-powered equipment is a sustainable management method that can be included in

a project’s site management policy. It helps reduce emissions and pollution associated with gasoline-

powered equipment, aligning with LEED’s environmental goals.

Reference: The LEED v4.1 O+M Guide and Site Management policy template provide guidance on

sustainable site management practices, including the use of electric-powered equipment to

minimize environmental impact123.

In developing a site management policy, one effective management method is to use electric-

powered equipment instead of gasoline-powered equipment. Electric equipment typically produces

fewer emissions and is quieter, contributing to a reduction in air pollution and noise pollution on the

site. This practice aligns with LEED's emphasis on reducing environmental impacts and improving the

quality of the site and surrounding areas.

Reference:

The use of electric-powered equipment as a preferred management method is consistent with the

guidelines provided in the LEED AP Operations + Maintenance reference materials, particularly in the

context of developing sustainable site management policies. These resources advocate for practices

that minimize environmental impact and enhance sustainability.

The full value of the purchase can be claimed towards the credit because it meets the criteria for

sustainable purchasing under LEED O+M v4.1. The produce is USDA Organic Certified and sourced

from within 100 miles of the project, which qualifies for the local economy and environment

category.

Reference: The LEED AP O+M Reference Guide provides detailed information on the requirements for

the Materials and Resources Credit, Purchasing - Ongoing, including the emphasis on sustainable

purchasing and supporting local economies12.

For the Materials and Resources Credit, Purchasing - Ongoing, the full value of $325.00 USD spent on

USDA Organic Certified produce from a local farm (within 100 miles or 160 kilometers) can be

claimed. This is because the LEED criteria for sustainable purchasing recognize and reward the

procurement of local and organic food products to support sustainable agricultural practices and

reduce transportation impacts. The entire amount spent on these products contributes towards the

credit because it aligns with the goals of supporting local economies and reducing environmental

impacts associated with long-distance food transportation.

Reference:

The LEED AP Operations + Maintenance reference materials detail the criteria for sustainable

purchasing, including the emphasis on local and organic food procurement. These guidelines specify

how purchases like these contribute towards achieving the Materials and Resources Credit,

Purchasing - Ongoing.

For compliance with the Sustainable Sites Credit, Site Management, when submetering of the

irrigation system is not available or difficult to implement for an existing building, the recommended

strategy is to use automated leak detection systems, such as those that use pressure sensors. The

guidance for irrigation management under the LEED for Operations and Maintenance (O+M) rating

system includes monitoring irrigation systems manually or with automated systems at least every

two weeks during the operating season for appropriate water usage, system times, leaks, or breaks.

Automated systems, particularly those employing pressure sensors, are effective in detecting leaks

and irregularities in water use, thereby contributing to efficient water management and

maintenance of the irrigation system. Reference: LEED v5 O+M: Existing Buildings beta version

Obtaining a response rate of 100% for the occupant comfort survey can qualify for an exemplary

performance point under Innovation Credit, Innovation, Option 3. Additional Strategies in LEED. This

high level of participation demonstrates exceptional commitment to occupant comfort and well-

being, a key aspect of sustainable building design and operation.

Using on-site captured rainwater and municipally treated wastewater for both flush fixtures and

irrigation can be applied towards the credits for both Indoor Water Use Reduction and Outdoor

Water Use Reduction in LEED. These alternative water sources contribute to the overall water

efficiency of the project by reducing the reliance on potable water sources for indoor and outdoor

uses.

A rainwater collection system can significantly reduce or completely eliminate the use of potable

water for irrigation by collecting and storing rainwater for this purpose.

Reference: The LEED v4.1 O+M rating system encourages the use of alternative water sources, like

collected rainwater, to reduce potable water consumption for irrigation, aligning with the goal of

water efficiency in sustainable site management1234.

A rainwater collection system can significantly reduce or completely eliminate the amount of potable

water used for irrigation. By collecting and storing rainwater, it provides a sustainable source of

water for landscape irrigation, thereby reducing the dependency on potable water sources for this

purpose.

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.

Reference:

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.

When the building type is not covered by the ENERGY STAR® rating tool, the energy baseline for

Minimum Energy Performance can be determined using historical energy consumption data or a

calibrated energy simulation. This approach allows for a tailored assessment of the building’s energy

use that is specific to its actual performance.

Reference: The LEED v4.1 O+M reference materials provide guidance on establishing an energy

baseline using historical data or energy simulation methods when ENERGY STAR® ratings are not

applicable1234.

To earn the exemplary performance point for the Indoor Water Use Reduction Credit, Option 2, a

project must achieve a minimum of 30% water use reduction from the baseline.

Reference: This requirement is detailed in the LEED v4 O+M reference materials, which specify the

thresholds for achieving points under the Indoor Water Use Reduction Credit1.

The maximum number of points possible for the Exemplary Performance option of the Innovation

Credit, Innovation in LEED AP O+M v4.1 is 2 points. This is part of the overall potential to earn up to 5

points in the Innovation category, which can include pilot credits, innovation credits, and exemplary

performance credits.

Reference: The LEED credit library and other resources provide information on the point distribution

for various credits within the LEED system, including the Innovation Credit, Innovation1.

For the Exemplary Performance option of the Innovation Credit, Innovation, the maximum number

of points possible is two. This option is designed to recognize and incentivize projects that achieve

performance levels significantly beyond the prerequisite standard or credit requirements in the LEED

rating system.

For the Indoor Environmental Quality Credit, Daylight and Quality Views, Option 2. Quality Views,

the scenario that contributes is having a view to the outdoors that provides a connection to the

natural environment. An executive office with a view of a park meets this requirement by offering a

direct line of sight to the outdoor environment, thus enhancing the occupants’ psychological and

emotional well-being.

Reference: The LEED v4.1 O+M reference materials emphasize the importance of quality views to the

outdoor environment for occupant comfort and well-being12.

In the scenario of achieving Indoor Environmental Quality Credit, Daylight and Quality Views, Option

2 (Quality Views), an executive office with a view of a park contributes towards this credit. This

option focuses on providing building occupants with a connection to the natural outdoor

environment by means of quality views, which include views of natural settings like parks, gardens,

or other scenic vistas.

Reference: LEED AP Operations + Maintenance Reference Guide, Indoor Environmental Quality

section.

When adding a new space within a facility to the ENERGY STAR® Portfolio Manager, the required

information includes the space floor area and hours of operation1. The tool helps building owners

and tenants measure and track energy, water use, and waste, all in a secure online environment1. It

is important to note that to receive an ENERGY STAR score in Portfolio Manager, you must enter 12

full calendar months of energy data for all energy types, in addition to complete data on property

use details such as hours of operation and workers2.

Reference:

LEED AP Operations + Maintenance (LEED AP O+M) V4.1 by usgbc.org3

How to Enter and Manage Tenant Spaces in ENERGY STAR® Portfolio Manager1

ENERGY STAR Score2

Untreated stormwater, due to its potential contaminants, is not suitable for potable uses but can be

effectively utilized for non-potable applications such as irrigation. It provides a viable alternative to

using treated water for landscape irrigation, thereby conserving potable water resources. This use

aligns with sustainable water management practices encouraged by LEED, which promote the

reduction of potable water usage for landscape irrigation.

Reference:

The LEED Reference Guide for Green Building Design and Construction and the LEED O+M Reference

Guide both encourage the use of untreated stormwater for irrigation as part of an integrated water

management approach. This conservation strategy is covered under the Water Efficiency category

and is a common topic in LEED AP O+M training sessions.

This is the correct answer because LEED v4.1 O+M requires projects to provide storage locations for

at least five of the following recyclable materials: mixed paper, corrugated cardboard, glass, plastics,

metals, batteries, mercury-containing lamps, and electronic waste. Option D lists five of these

materials, while the other options include materials that are not required by LEED, such as paint,

wood pallets, or electronics.

Reference:

•

LEED v4.1 O+M Reference Guide, p. 1211

•

LEED v4.1 O+M Guide, p. 92

A pilot credit in LEED is a new, innovative point of credit that is being tested for its effectiveness and

applicability. When a LEED AP identifies a pilot credit that is relevant to the project, it is documented

as an Innovation credit in LEED Online. This allows the project to earn points for innovative strategies

that are not specifically addressed in the LEED rating system.

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

Operations & Maintenance - Canada Green Building Council (CAGBC)

The correct answer is A because mulching is an environmentally friendly technology for controlling

erosion, as stated in the web search results12. Mulching involves applying organic or inorganic

materials on the soil surface to protect it from water and wind erosion. Mulching can also conserve

soil moisture, moderate soil temperature, and enhance soil fertility2. The other options are incorrect

because they either do not control erosion effectively or cause environmental harm.

Reference:

Environment-Friendly Erosion and Dust Control Solutions | GRT, Environmentally friendly erosion

and dust control solutions section

15 Wonderful Methods to Control Erosion | Earth Eclipse, Applying Mulches section

Mulching is an environmentally friendly technique used to control erosion by providing a protective

layer on the soil surface. This layer helps to reduce the impact of raindrops on the soil, thereby

decreasing the potential for soil erosion. Mulch can be made from a variety of organic materials,

such as shredded bark, straw, or compost, which not only protect the soil from erosion but also add

nutrients as they decompose, improve soil structure, and encourage healthy plant growth. Unlike

impermeable solutions like asphalt or temporary solutions like tarpaulin, mulching integrates with

the natural environment and supports sustainable land management practices.

The strategies that are eligible for reducing landscape water demand in the Water Efficiency Credit,

Outdoor Water Use Reduction, include selecting plant species that require less water and improving

irrigation efficiency. These measures are part of a comprehensive approach to minimize water use in

landscaping.

Reference: The LEED v4.1 O+M reference materials highlight the importance of plant species

selection and irrigation system efficiency as primary strategies for achieving outdoor water use

reduction1.

Reducing landscape water demand in the Water Efficiency Credit, Outdoor Water Use Reduction, can

be achieved through strategic plant species selection and improving irrigation efficiency. Choosing

native or adapted plants that require less water helps reduce the demand for irrigation.

Simultaneously, employing efficient irrigation technologies and practices, such as drip irrigation or

smart controllers, minimizes water waste. These strategies work together to significantly lower the

amount of water needed for landscaping, contributing to water conservation and sustainability goals.

Reference:

These strategies are discussed in the LEED AP Operations + Maintenance reference guide within the

section on Water Efficiency Credit, Outdoor Water Use Reduction. The guide provides best practices

for selecting plant species and irrigation methods that align with LEED's objectives for reducing water

use in landscapes.