LEED AP O+M EXAM 2025 QUESTIONS
AND ANSWERS 100% PASS
Abandoned property - ✔✔property left behind intentionally and permanently - initial
owner does not intend to come back
** nonuse does not equal abandoned (ie: easement)
Adapted plant - ✔✔vegetation that is not native to a particular region but that has
characteristics that allow it to live in the area
** do not pose the same problems as invasive species
Added antimicrobial treatment - ✔✔a substance added to a product (i.e. flooring or
paint) to kill or inhibit the growth of microorganisms
**science has not proved that antimicrobial treatments reduce infection transfer in
building finishes more effectively than standard cleaning procedures
Naturally antimicrobial surface - ✔✔linoleum
Adjacent site - ✔✔a site having at least a continuous 25% of its boundary bordering
parcels that are previously developed sites
** not intervening rights-of-way
** boundary that borders a water body is excluded from the calculation
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
,Alternative daily cover (ADC) - ✔✔Material other than earthen material placed on the
surface of a municipal solid waste landfill at the end of each operating day to control
vectors, fires, odors, blowing litter, and scavenging
Alternative fuel - ✔✔low-polluting, non-gasoline fuels such as electricity, hydrogen,
propane, compressed natural gas, liquid natural gas, methanol, and ethanol
Alternative water source - ✔✔Non-potable water from other than public utilities, on-
site surfaces, or freshwater sources, such as graywater, on-site reclaimed water,
collected rainwater, captured condensate, and rejected water from reverse osmosis
systems. Water from the public utilities is excluded.
Annual sunlight exposure (ASE) - ✔✔A metric that describes the potential for visual
discomfort in interior work environments
** the percentage of an analysis area that exceeds a specified direct sunlight illuminance
level more than a specified number of hours a year
Appurtenance - ✔✔a built-in, nonstructural potion of a roof system
EXAMPLES: skylights, ventilators, mechanical equipment, partitions, and solar panels
ASE1000, 250 - ✔✔reports the percentage of sensors in the analysis area, using a
maximum 2-foot spacing between points, that are found to be exposed to more than
1000 lux of direct sunlight for more than 250 hours per year, before any operable blinds
or shades are deployed to block sunlight, considering the same 10 hour/day analysis
period as sDA and using comparable simulation methods
Assembly - ✔✔a product formulated from multiple materials (ie: concrete) or a product
made up of subcomponents (ie: workstation)
Attendance boundary - ✔✔the limits used by school district to determine what school
students attend based on where they live
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
,Average LED intensity (ALI) - ✔✔the illumination output for light-emitting diode
lamps, as specified in the International Commission on Illumination Standard 127-2007
Base builidng - ✔✔materials and products that make up the building or are
permanently and semi-permanently installed in the project
EXAMPLES: flooring, casework, wall coverings
Baseline building performance - ✔✔the annual energy cost for a building design, used
as a baseline for comparison with above standard design
Baseline condition - ✔✔before the LEED project was initiated, but not necessarily before
any development or disturbance took place
**Baseline conditions describe the state of the project site on the date the developer
acquired rights to a majority of its buildable land through purchase or option to
purchase.
Baseline water consumption - ✔✔a calculated projection of building water use
assuming code-compliant fixtures and fittings with no additional savings compared
with the design case or actual water data
Basis of design (BOD) - ✔✔The information necessary to accomplish the owner's project
requirements, including system descriptions, indoor environmental quality criteria,
design assumptions, and references to applicable codes, standards, regulations, and
guidelines
Bicycle network - ✔✔A continuous network consisting of any combination of the
following
1. off street bicycle paths or trails at least 8 ft wide for a two way path and at least 5 ft
wide for a one way path
2. physically designated on-street bicycle lanes at least 5 ft wide
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 3
, 3. streets designed for a target speed of 25 mph
Bio-based material - ✔✔Commercial or industrial products (other than food or feed)
that are composed in whole, or in significant part, of biological products, renewable
agricultural materials (including plant, animal, and marine materials), or forestry
materials
** excludes leather and animal hides
Blackwater - ✔✔Wastewater containing urine or fecal matter that should be discharged
to the sanitary drainage system of the building
EXAMPLES: kitchen sinks, showers, or bathtubs
What sometimes differentiates kitchen sinks from being gray vs blackwater? - ✔✔The
presence of a garbage disposal
Blowdown - ✔✔the removal of makeup water from a cooling tower or evaporative
condenser recirculation system to reduce concentrations of dissolved solids
Brownfield - ✔✔abandoned industrial sites
real property or the expansion, redevelopment, or reuse of which may be complicated
by the presence or possible presence of a hazardous substance, pollutant, or
contaminant
BUG rating - ✔✔a luminaire classification system
(B) backlight
(U) uplight
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 4
AND ANSWERS 100% PASS
Abandoned property - ✔✔property left behind intentionally and permanently - initial
owner does not intend to come back
** nonuse does not equal abandoned (ie: easement)
Adapted plant - ✔✔vegetation that is not native to a particular region but that has
characteristics that allow it to live in the area
** do not pose the same problems as invasive species
Added antimicrobial treatment - ✔✔a substance added to a product (i.e. flooring or
paint) to kill or inhibit the growth of microorganisms
**science has not proved that antimicrobial treatments reduce infection transfer in
building finishes more effectively than standard cleaning procedures
Naturally antimicrobial surface - ✔✔linoleum
Adjacent site - ✔✔a site having at least a continuous 25% of its boundary bordering
parcels that are previously developed sites
** not intervening rights-of-way
** boundary that borders a water body is excluded from the calculation
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
,Alternative daily cover (ADC) - ✔✔Material other than earthen material placed on the
surface of a municipal solid waste landfill at the end of each operating day to control
vectors, fires, odors, blowing litter, and scavenging
Alternative fuel - ✔✔low-polluting, non-gasoline fuels such as electricity, hydrogen,
propane, compressed natural gas, liquid natural gas, methanol, and ethanol
Alternative water source - ✔✔Non-potable water from other than public utilities, on-
site surfaces, or freshwater sources, such as graywater, on-site reclaimed water,
collected rainwater, captured condensate, and rejected water from reverse osmosis
systems. Water from the public utilities is excluded.
Annual sunlight exposure (ASE) - ✔✔A metric that describes the potential for visual
discomfort in interior work environments
** the percentage of an analysis area that exceeds a specified direct sunlight illuminance
level more than a specified number of hours a year
Appurtenance - ✔✔a built-in, nonstructural potion of a roof system
EXAMPLES: skylights, ventilators, mechanical equipment, partitions, and solar panels
ASE1000, 250 - ✔✔reports the percentage of sensors in the analysis area, using a
maximum 2-foot spacing between points, that are found to be exposed to more than
1000 lux of direct sunlight for more than 250 hours per year, before any operable blinds
or shades are deployed to block sunlight, considering the same 10 hour/day analysis
period as sDA and using comparable simulation methods
Assembly - ✔✔a product formulated from multiple materials (ie: concrete) or a product
made up of subcomponents (ie: workstation)
Attendance boundary - ✔✔the limits used by school district to determine what school
students attend based on where they live
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
,Average LED intensity (ALI) - ✔✔the illumination output for light-emitting diode
lamps, as specified in the International Commission on Illumination Standard 127-2007
Base builidng - ✔✔materials and products that make up the building or are
permanently and semi-permanently installed in the project
EXAMPLES: flooring, casework, wall coverings
Baseline building performance - ✔✔the annual energy cost for a building design, used
as a baseline for comparison with above standard design
Baseline condition - ✔✔before the LEED project was initiated, but not necessarily before
any development or disturbance took place
**Baseline conditions describe the state of the project site on the date the developer
acquired rights to a majority of its buildable land through purchase or option to
purchase.
Baseline water consumption - ✔✔a calculated projection of building water use
assuming code-compliant fixtures and fittings with no additional savings compared
with the design case or actual water data
Basis of design (BOD) - ✔✔The information necessary to accomplish the owner's project
requirements, including system descriptions, indoor environmental quality criteria,
design assumptions, and references to applicable codes, standards, regulations, and
guidelines
Bicycle network - ✔✔A continuous network consisting of any combination of the
following
1. off street bicycle paths or trails at least 8 ft wide for a two way path and at least 5 ft
wide for a one way path
2. physically designated on-street bicycle lanes at least 5 ft wide
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 3
, 3. streets designed for a target speed of 25 mph
Bio-based material - ✔✔Commercial or industrial products (other than food or feed)
that are composed in whole, or in significant part, of biological products, renewable
agricultural materials (including plant, animal, and marine materials), or forestry
materials
** excludes leather and animal hides
Blackwater - ✔✔Wastewater containing urine or fecal matter that should be discharged
to the sanitary drainage system of the building
EXAMPLES: kitchen sinks, showers, or bathtubs
What sometimes differentiates kitchen sinks from being gray vs blackwater? - ✔✔The
presence of a garbage disposal
Blowdown - ✔✔the removal of makeup water from a cooling tower or evaporative
condenser recirculation system to reduce concentrations of dissolved solids
Brownfield - ✔✔abandoned industrial sites
real property or the expansion, redevelopment, or reuse of which may be complicated
by the presence or possible presence of a hazardous substance, pollutant, or
contaminant
BUG rating - ✔✔a luminaire classification system
(B) backlight
(U) uplight
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 4
