Leed green associate iv. project systems and energy impacts question

1. LEED Green Associate IV. Project Systems and Energy Impacts
Question 1:
What transfers heat during the mechanical cooling process?
A Off-gassing
B Biomass
C Refrigerants
D Feedback loop
Question 2:
What project areas would you find CFCs used in?
A Radiant flooring
B Centrifugal chillers
C Refrigeration
D Hot water heating
Question 3:
With regards to refrigerants what is a natural conflict between the prevention of ozone depletion and global warming?
A Refrigerants contain ozone layer gases
B Refrigerants that are neutral to the ozone layer are less efficient
C Refrigerants that deplete the ozone layer are less efficient
D Refrigerants contain global warming gases
Question 4:
Developing nations banned chlorofluorocarbons under the:
A Executive Order 95-231
B Montreal Protocol

2. C EPA Clean Air Act
D Kyoto Treaty
Question 5:
The Green Power credit gives preference to electricity products that:
A Are greenhouse gas neutral
B Come from grid-source, renewable energy technologies on a net zero pollution basis
C Come from hydroelectric sources
D Use cogeneration
Question 6:
What statement is true regarding a passive cooling system?
A It does not use any refrigerants
B It has a high indirect impact on the environment
C The refrigerants operate at a low or negative pressure
D It has high global warming potential (GWP)
Question 7:
Which of the following causes depletion of the ozone layer?
A CO2
B CFCs
C Propane
D Ammonia
Question 8:
What statement is true regarding the purchase of RECs?

3. A RECs decrease the quantity of energy a building owner must purchase from utility companies
B RECs will increase the amount of onsite renewable energy a building generates
C Purchasing RECs will help a project earn credit for Green Power
D RECs decrease a building's energy demand
Question 9:
What credit category is given the greatest weighting?
A Energy and Atmosphere
B Sustainable Sites
C Water Efficiency
D Materials and Resources
Question 10:
Energy efficiency is defined as:
A The use of technology that requires less energy to perform the same function as a conventional item
B Any strategy that reduces resource use 20% from a baseline comparison
C Any strategy that reduces resource use 10% or more from a baseline comparison
D The replacement of any older building product with a newer building product
Question 11:
In an existing building, with what can a project team replace CFCs and still earn LEED certification?
A Only natural refrigerants
B Only HFCs or natural refrigerants
C Any non CFC-based refrigerant
D Natural ventilation

4. Question 12:
What are differences between Hydrocarbons (HCs) and Hydrochlorofluorocarbons (HCFCs)?
A HCs are environmentally benign to the atmosphere while HCFCs are not
B HCs are an ideal replacement for CFCs while HCFCs are not
C HCs can be used as refrigerants in new buildings while LEED requires zero use of HCFC-based
refrigerants in new base building elements
D HCs have a lower global warming potential (GWP) than HCFCs
Question 13:
What types of energy sources generate the least air and water pollution?
A Biofuel
B Oil
C Wind
D Natural gas
E Coal
Question 14:
What leaves the largest carbon footprint in the typical office building?
A Transportation
B Materials
C Water
D Building systems
Question 15:
What does the Montreal Protocol ban?
A Coal-fired power plants

5. B CFCs
C Mercury in light bulbs
D Incandescent light bulbs
Question 16:
Can ozone have negative environmental effects?
A Yes, depending on where ozone is located
B Yes, when located in the upper atmosphere
C No, ozone is essential to life on earth
D No, ozone is located in the upper atmosphere
Question 17:
The leakage rate is the speed at which an appliance loses refrigerant, measured between refrigerant charges or over
_____, whichever is shorter.
A 24 months
B 6 months
C 18 months
D 12 months
Question 18:
Purchased power must meet which certification's standards to qualify as off-site renewable sources of energy for
LEED projects?
A Green Label Plus
B Green Seal
C Green-e
D Green Label

6. Question 19:
How can a LEED project earn credit for Green Power?
A By selecting a Green-e certified power provider
B By purchasing any renewable energy source
C By installing solar panels
D By purchasing biofuel based power
Question 20:
An office project design in a cooler climate will include natural ventilation. What standards will help the project team
earn credits for this design?
A ASHRAE 62.1-2007
B SMACNA
C ASHRAE 55-2004
D Green-e
E SCAQMD
Question 21:
What statement is true regarding halons?
A Halons absorb heat from a reservoir at low temperatures and reject heat at higher temperatures
B Halons are commonly used in centrifugal chillers
C Halons are a type of hydrocarbon
D Halons are substances that deplete the stratospheric ozone layer
Question 22:
Which refrigerants are considered environmentally benign?
A Halons

7. B Propane
C Hydrofluorocarbons
D Hydrocarbons
Question 23:
What is building commissioning?
A A process to remove volatile organic compounds (VOCs) from a building
B A systematic process of assuring that a building and its systems perform in accordance with the design
intent and the owner's requirements
C The process of adapting old structures for purposes other than those initially intended
D When an existing building undergoes the commissioning process to discover if improvements or
changes should be made to improve the building
Question 24:
Which of the following has the greatest direct impact on global warming?
A Building orientation
B Chillers' operating efficiency
C SRI of a building's roof
D Use of natural refrigerants
Question 25:
On a project with older existing HVAC&R system that uses CFCs what can the project team do to earn LEED
certification?
A The project can be certified with the existing system as-is
B Replace the HVAC&R system with one that does not use CFCs
C Maintain the equipment properly over the building's lifetime
D Seal any leaks in the existing system

8. Question 26:
Ozone-friendly refrigerants differ from ozone-damaging refrigerants in what way?
A Ozone-friendly refrigerants are more energy efficient
B Ozone-friendly refrigerants may cause more global warming
C Ozone-friendly refrigerants are global warming neutral
D Ozone-friendly refrigerants may cause less global warming
Question 27:
What environmental issue is associated with refrigerants used in HVAC&R systems?
A Increased use of fossil fuels
B Damage to the Earth's ozone layer
C Increased air pollution
D Pollution of water bodies
Question 28:
Green power refers to electricity products that include significant proportions of electricity generated from energy
resources that are:
A Derived from the sun
B Renewable
C Locally harvested
D Green Seal Certified
Question 29:
What causes depletion of the ozone layer?
A Biofuel
B HCFCs

9. C Landfill gas
D Hydrogen power
Question 30:
On a project with an older existing HVAC&R system that uses CFCs, what can the project team do to earn LEED
certification?
A Make a phase out plan for the removal of the CFC based refrigerants
B Eliminate all refrigerant leaks
C Get a state exemption for the HVAC&R system
D Recharge the equipment with CFCs
Question 31:
Which of the following is a natural refrigerant?
A HCFC
B CFC
C CO2
D HFC
Question 32:
What should be done to minimize a building's impact on ozone depletion?
A Install a green roof
B Reduce heat islands
C Zero use of CFCs
D Use halons in fire suppression systems

10. Question 33:
What does global warming potential (GWP) measure?
A Harm done by refrigerants to the ozone layer
B Lifespan of refrigerants
C Chemical contribution to global warming
D Embodied energy of a refrigerant
Question 34:
What must a project team do prior to phasing out CFC-based refrigerants?
A Select a replacement refrigerant with a long atmospheric lifetime
B Select a replacement refrigerant with a nonzero Ozone Depletion Potential (ODP)
C Vent any remaining CFCs for disposal to the air prior to decommissioning any equipment
D Reduce the annual leakage of CFCs to 5% or less using EPA Clean Air Act procedures
Question 35:
The practice of placing windows or other transparent media and reflective surfaces in such a way that during the day
natural light provides effective internal illumination is referred to as:
A Lighting power density
B Natural ventilation
C Daylighting
D Passive ventilation
Question 36:
What statement is true regarding the use of Halons?
A A building that uses Halons in fire suppression systems cannot earn any LEED certification.
B A building that uses Halons in fire suppression systems could not earn LEED for Existing Buildings:
Operations and Maintenance certification

11. C A building that uses Halons in fire suppression systems must implement a 5-year phase out plan as part
of the application process
D A building that uses Halons in fire suppression systems can still earn LEED certification
Question 37:
When calculating building energy performance, what is included as process energy?
A Desktop computer
B Washing machine
C Walkway lighting
D Instant hot water heater
E Elevator
F High efficient HVAC unit
Question 38:
What project design feature would decrease energy costs in a building?
A Cogeneration
B Increased Ventilation with a mechanical system
C Purchasing materials with low VOC content
D Installing equipment that uses more kBtu
Question 39:
Which refrigerant has the lowest Ozone Depletion Potential (ODP)?
A CFC
B Halon
C HFC
D HCFC

12. Question 40:
Which of the following is a type of biofuel?
A Hydro
B Wind
C Corn oil
D Solar
Question 41:
What must occur if a project includes a CFC phase-out plan?
A The CFC-based refrigerants must be replaced with low ODP refrigerants
B The project must implement green house gas emissions reporting
C The CFC-based refrigerants must be replaced with HCFCs
D The annual leakage of CFC-based refrigerants must be reduced to 5% or less
Question 42:
What organization is responsible for qualifying sources of off-site renewable energy acceptable by LEED?
A Center for Resource Solutions
B EPA
C ASHRAE
D Green-e
Question 43:
Which of the following refrigerants are banned or are scheduled to be banned under the Montreal Protocol?
A Isopentane

13. B CFCs
C HFCs
D HCFCs
Question 44:
Which of the following causes depletion of the ozone layer?
A Halons
B Heat islands
C Solar radiation
D Mercury
Question 45:
The selection of a less efficient refrigerant for HVAC&R systems can result in an increase in what types of emissions?
A Radon
B VOCs
C CFCs
D NH3
E CO2
Question 46:
What type of building system might use halons?
A Electrical
B Irrigation
C Fire suppression
D Plumbing

14. Question 47:
In a state with a closed electricity market, how can off-site green power be purchased?
A Enroll in a Green-e renewable power program from the utility provider
B Through an ENERGY STAR approved utility provider
C From a USGBC approved provider
D Have certified wood scraps delivered onsite for burning
Question 48:
A project building in a sunny location has photovoltaic cells that generate part of the building's electricity. What is true
about this project?
A The project will need to purchase Renewable Energy Credits (RECs) equal to the amount of onsite
renewable energy generated
B The project's annual energy costs from the utility provider will be lower than they would be if the
building did not have the photovoltaic system
C The project's on-site energy is Green-e certified
D The project will receive RECs from the utility provider
Question 49:
Which of the following is NOT an example of on-site generated renewable energy?
A Wind
B REC
C Biofuel-based electrical system
D Solar
Question 50:
What standards would be used for the Energy and Atmosphere category?
A ASHRAE 90.1-2007

15. B ASHRAE 55-2004
C ASHRAE 62.1-2007
D EPAct 1992
Question 51:
In a new building how much CFC-based refrigerant can be used?
A 5% of the total refrigerants
B 5% of the total refrigerants, as long as they are not used in fire suppression systems
C None
D 2% of the total refrigerants
Question 52:
Why do natural refrigerants have greater global warming potential than refrigerants that can damage the ozone layer?
A They require water use
B They are less efficient
C They have higher leakage rates
D They produce more sulfur dioxide in the refrigeration process
Question 53:
LEED buildings use what percent less energy than the national average?
A 26%
B 18%
C 20%
D 24%

16. Question 54:
What organization publishes Ozone Depletion and Global Warming Potential scores?
A United Nations
B Montreal Protocol
C USGBC
D World Meteorological Organization
Question 55:
How is lighting power density determined?
A By measuring the installed lighting power per unit area
B By conducting energy modeling using special software
C By calculating the energy consumption divided by the square feet in a building
D By submetering a building's energy use
Question 56:
Reduced emissions are a benefit of purchasing:
A Recycled water
B Materials with high SRI
C RECs
D Certified wood
Question 57:
What is Global Warming Potential as it relates to refrigerants?
A The efficiency of a refrigerant
B The potential for a single molecule of the refrigerant to destroy the ozone layer

17. C A measurement of how much effect the given refrigerant will have on global warming in relation to
carbon dioxide.
D The speed at which an appliance loses its refrigerant
Question 58:
What are the environmental benefits of cogeneration?
A Reduced greenhouse gas emissions
B Recharging of aquifers
C Reduced erosion and sedimentation
D Reduced wastewater generation
E Reduced air pollution
Question 59:
ASHRAE standards are used in all of the following LEED categories except:
A Materials and Resources
B Indoor Environmental Quality
C Energy and Atmosphere
D Sustainable Sites
Question 60:
Installing photovoltaic cells on a building's rooftop will help with what green building area?
A Fundamental Refrigerant Management
B Recycled Materials
C Green Power
D Onsite Renewable Energy

18. Question 61:
Biomass is what type of material?
A Fly-ash
B Landfill gas
C Animal waste
D Plant material
Question 62:
What is the function of the ozone layer?
A Protects the earth from solar wind
B Prevents smog creation
C Absorbs ultraviolet light
D Keeps the earth's atmosphere warm
Question 63:
Which of the following have helped reduce stratospheric ozone depletion?
A Replacing HFC-based refrigerants with HCFC-based refrigerants in existing equipment
B Implementing a phase-out of CFC-based refrigerants in existing equipment
C Not using CFC-based refrigerants in new equipment
D Installing halon-based fire suppression systems
Question 64:
What types of systems are not acceptable by LEED as sources of onsite renewable energy?
A Low-impact hydroelectric power systems
B High-impact hydroelectric power systems

19. C Biomass
D Wind
Question 65:
What statement is true regarding the use of ammonia (NH3) as a refrigerant?
A The use of NH3 as a refrigerant can result in more climate change compared to HCFCs
B NH3 is a type of hydrocarbon (HC)
C NH3 is more likely to leak out of equipment compared to HFCs
D HCFC has a lower ozone depletion potential (ODP) compared to NH3
Question 66:
What can be used to identify under-performing buildings and verify efficiency improvements?
A ENERGY STAR Portfolio Manager
B ENERGY STAR Target Finder
C Building Research Establishment's Environmental Assessment Method
D LEED Volume Program
Question 67:
In cooler climates how can a new building be designed to use no refrigerants?
A The building could have a CFC phase-out plan in place
B The building could be cooled with natural refrigerants such as propane or ammonia
C The building could use natural ventilation
D The building could use halons for cooling

20. Question 68:
How is ozone created?
A Transportation emissions
B Emissions from incinerators
C Emissions from factories
D Sunlight-driven chemical reaction between molecules
Question 69:
What types of energy are not fossil fuels?
A Nuclear
B Coal
C Oil
D Biofuel
E Natural gas
Question 70:
What are MERV ratings used for?
A Determining the quantity of recycled content in a material
B Measuring the effectiveness of a sustainable purchasing policy
C Comparing the VOC content of paints and sealers
D Comparing the efficiency of air filters
Question 71:
What does not meet LEED requirements for minimizing the negative impacts of refrigerants on the environment?
A Selecting refrigerants with zero or low ozone depletion potential (ODP) and minimal global warming
potential (GWP).

21. B Reducing the annual leakage rate of refrigerants to 10% or less
C Designing a building with natural ventilation
D Designing a building that does not use chemical refrigerants
Question 72:
Which of the following refrigerants has the least global warming potential?
A CFC-11
B HFC-23
C HCFC-123
D CFC-12
Question 73:
What environmental issue is associated with refrigerants used in HVAC&R systems?
A Increasing greenhouse gas emissions
B Groundwater contamination
C Soil contamination
D Increased CO2 indoors
Question 74:
The type of refrigerant selected for a building will impact what LEED credit categories?
A Indoor Environmental Quality
B Sustainable Sites
C Energy and Atmosphere
D Materials and Resources
E Water Efficiency

22. Question 75:
What implies a direct impact on global warming?
A Refrigerant charge
B Global warming potential
C Ozone depleting potential
D Service life
Question 76:
What does a REC represent?
A The amount of energy an electricity provider purchases from renewable sources
B The environmental, social, and other positive attributes of power generated by renewable resources
C The amount of energy purchased from a Green-e supplier
D The quantity of fossil fuels avoided by purchasing renewable energy, expressed in tons
Question 77:
When purchasing RECs, what is the project purchasing?
A Carbon offsets
B Positive environmental attributes of off-site renewable energy
C Electricity
D On-site renewable energy
Question 78:
What LEED category would the Green-e standard be used in?
A Materials and Resources
B Sustainable Sites

23. C Indoor Environmental Quality
D Energy and Atmosphere
Question 79:
On a project with an older, existing HVAC&R system that uses CFCs, what can the project team do to earn LEED
certification?
A Purchase carbon credits
B Replace the CFCs with natural refrigerants
C Purchase Renewable Energy Certificates to offset the CFC use
D Replace the CFCs with Halons
Question 80:
What environmental issue is associated with the burning of fossil fuels?
A Release of carbon dioxide
B Sedimentation of water supplies
C Reduction of water from aquifers
D Interference with migratory birds
Question 81:
ASHRAE 90.1-2007 is used for which of the following project areas?
A Determining how efficient a refrigerant is
B Measuring a project's exterior lighting power density
C Measuring the quantity of stormwater runoff for the project boundary
D Determining the baseline water use reduction of a project

24. Question 82:
What is NOT a natural refrigerant?
A HFC
B CO2
C NH3
D HC
Question 83:
What is the environmental benefit of selecting something that is Green-e certified?
A Reduced CO2 emissions from fossil fuels because of greener and cleaner electricity
B Better indoor air quality due to lower VOC content in carpets
C Lower impact on natural resources because of better logging practices
D Less smog from automobile pollution because of more efficient cars
Question 84:
For LEED, if a project has an existing CFC-based refrigeration system and it is not economically feasible to replace
the system, what maximum annual leakage of the existing system is allowed?
A 0%
B 1%
C 5%
D 3%
Question 85:
What is the root cause of global climate change?
A Greenhouse gases
B The use of halons

25. C Topsoil loss
D Ozone depletion
Question 86:
An existing office building has a 20-year old chiller that uses CFC-11. An owner is considering a major renovation of
the building and applying for LEED for New Construction certification. What statement is true about the project's
ability to earn LEED certification?
A The owner will not be able to achieve a Platinum level certification
B The owner can implement a phase-out plan to earn LEED certification
C The owner must replace the chiller to earn LEED certification
D The owner can leave the existing system in place if the annual leakage is reduced to 10% or less
Question 87:
What year does the Montreal Protocol finally phase out HCFCs?
A 2030
B 1995
C 2010
D 2020
Question 88:
What standard helps businesses and households compare and select clean renewable energy options?
A Green Label
B Green-e
C Green Score
D Green Seal

26. Question 89:
Section 608 of the EPA Clean Air Act established regulations that helped with what issue?
A CO2 levels inside buildings
B Smog
C Humidity from heat islands
D Using and recycling ozone-depleting compounds
Question 90:
What refrigerant has the greatest ozone depletion potential (ODP)?
A CO2
B CFC-11
C HCFC-22
D HFC-23
Question 91:
What gives the ozone layer legal protection?
A Kyoto Protocol
B Montreal Protocol
C ASHRAE Standards
D US DOE
Question 92:
What is an example of climate change?
A A five-year drought
B An unexpected snowstorm in Phoenix
C A significant two-year increase in wind speeds

27. D A century-long increase in temperature by 1 degree
Question 93:
What is a biofuel-based system?
A A system that runs using wave power
B A system that runs on power from the sun
C A system that runs on gas
D A system that runs on organic material
Question 94:
How does calculating a project's Green Power compare to calculating a project's Onsite Renewable Energy?
A Green Power is based on the building's Btus per square foot while Onsite Renewable Energy is based on
the building's kWh per square foot per year
B Green Power is based on the percent of the building's energy consumption while Onsite Renewable Energy
is based on the percent of the building's annual energy cost
C Green Power is based on the building's annual energy cost while Onsite Renewable Energy is based on
the percent of the building's energy consumption
D The calculations are the same
Question 95:
What has a long atmospheric life that causes harm to the ozone layer?
A HCFCs
B NH3
C CFCs
D HCs
Question 96:
LEED addresses ozone depletion by setting requirements on the following:
A Refrigerants
B Green power use

28. C Automobile use reduction
D Fire suppression system chemicals
Question 97:
What is the name of the cancer-causing radioactive gas that can be found in the ground, groundwater, or building
materials?
A VOC
B Urea-formaldehyde
C NH3
D Radon
Question 98:
What is a building's annual energy cost used to calculate?
A Onsite Renewable Energy
B Enhanced Commissioning
C Green Power
D Measurement and Verification
Question 99:
What statement is true about RECs?
A RECs are reduced from utility bills
B RECs provide electricity
C RECs depreciate in value
D RECs are tradable commodities
Question 100:
What statement is true about RECs?
A RECs are sold separately from electricity

29. B RECs are sold within a 500 mile radius of the project
C RECs may only be sold in locations approved by Green-e
D RECs can be sold back to an electricity provider through net-metering
Question 101:
What qualifies for Green Power credit for LEED projects?
A Renewable energy certificates
B On-site renewable energy
C Energy reductions
D Using no refrigerants
Question 102:
What statement is true regarding CFCs?
A CFCs are no longer used anywhere
B CFCs are not addressed in the US EPA Clean Air Act
C No ideal alternative for CFCs has been developed
D CFCs are no longer used in developed nations
Question 103:
What is a drawback of using a biofuel-based energy system?
A The lack of regulatory oversight
B Fossil fuels must still be used to produce biofuels
C These systems are not acceptable for LEED credits
D Production is unreliable or inconsistent
Question 104:
What statement is true regarding the Clean Air Act?
A The Sustainable Sites category references the Clean Air Act in regards to airborne dust generation
from construction activities

30. B The Clean Air Act provides recommendations on carbon emissions for all new commercial buildings
C No production and no importing of any HCFCs will be allowed after 2030 under the Clean Air Act
D The Clean Air Act defines what constitutes a low-emitting or fuel-efficient vehicle
Question 105:
What is lighting power density measured in?
A Footcandles per floor area
B Installed lighting power per unit area
C Number of luminaires per unit area
D The quantity of light trespass on adjacent sites, measured in watts
Question 106:
Why should building commissioning be performed?
A Sustainable purchasing programs require it
B Operating costs can be lowered and energy use can be reduced
C An innovation credit can be earned
D It is required by local code prior to earning a Certificate of Occupancy
Question 107:
Which statement is true about CFCs in the United States?
A CFC production in the United States will be phased out by 2030
B CFC production in the United States ended in 1995
C CFC production in the United States will be phased out by 2010
D CFCs are no longer used in the United States
Question 108:
What statement is true regarding Hydrofluorocarbons (HFCs)?
A Many HFCs have a significant global warming potential

31. B HFCs are scheduled to be banned under the Montreal Protocol
C The HFC refrigerant group includes NH3, CO2, and propane
D HFCs have high ozone depletion potential
Question 109:
What is the most common way to meet the requirements of off-site renewable energy?
A Installing a rooftop photovoltaic array
B Directly purchasing green power from local utility companies
C Purchasing RECs
D Obtaining energy from a geothermal system
Question 110:
What statement is true regarding HydroChloroFluoroCarbons (HCFCs)?
A HCFCs have a low ozone depletion potential compared to CFCs
B Zero use of HCFCs is required to achieve Fundamental Refrigerant Management
C HCFCs are a type of natural refrigerant
D HCFCs are the refrigerants with the least direct impact on the environment
Question 111:
Which projects would not be eligible for LEED certification?
A An existing building project that reduces CFC-based refrigerants by 95% prior to submitting the LEED
application and will continue to use this CFC system for another 10 years
B A new building project that uses hydrocarbons (HCs) as refrigerants
C A new building project that uses CFC-based refrigerants
D A new building project that uses no refrigerants
E An existing building project that phases out the use of CFC-based refrigerants no later than 5 years
after the project is completed
Question 112:
What environmental benefit does green power have?

32. A Avoiding electricity blackouts
B Reduced environmental regulation
C Stability of electrical prices
D Emission reductions
Question 113:
What process uses heat recovery to capture heat from the process of generating electricity and then turns the
recovered heat into thermal energy that can be used to heat a building?
A Cogeneration
B Commissioning
C Tertiary treatment
D Evopotranspiration
Question 114:
When calculating building energy performance what is included as non-process energy?
A Parking garage ventilation
B Refrigerator
C Electric kitchen stove
D Parking garage lighting
E Fans for increased ventilation
F Escalator
Question 115:
Which of the following is a type of natural refrigerant?
A Passive refrigerants
B Halons
C HydroCarbons (HC)
D Geothermal energy

33. Question 116:
Which of the following is not an alternative LEED recommends for reducing stratospheric ozone depletion?
A Selecting refrigerants that have a long atmospheric lifetimes
B Designing a building to use natural ventilation
C Using natural refrigerants
D Selecting refrigerants with lower ODP and GWP
Question 117:
What variables measure a refrigerant's impact on the environment?
A Lifecycle potential
B Ozone depletion potential
C Global warming potential
D Greenhouse gas lifetime
E Global warming period
Question 118:
What statement is true regarding ChloroFluoroCarbons (CFCs) and HydroChloroFluoroCarbons (HCFCs)?
A CFCs have a greater global warming potential (GWP) than HCFCs
B The ozone depletion potential (ODP) of HCFCs and CFCs is about the same
C LEED encourages replacing CFC or halon-based fire suppression systems with HCFCs
D CFCs are banned under the Montreal Protocol while HCFCs are not
Question 119:
How long can a project team take after project completion to phase-out any CFC-based refrigerants?
A 4 years
B 5 years
C 2 years

34. D 3 years
Question 120:
For LEED credit a fire suppression system should not contain:
A Water
B CO2
C Halons
D HCFCs
E CFCs
Question 121:
Approximately 50% of chillers in existing buildings use what refrigerant?
A NH3
B HCFC-22
C HFC-23
D CFC-11
Question 122:
Which of the following is NOT a type of biofuel?
A Wood chips
B Soybean oil
C Geothermal
D Vegetable oil
Question 123:
What are the best design strategies for improving indoor air quality during operations and maintenance of a building?
A Use soft surfaces on the interiors

35. B Use natural refrigerants
C Use air filters with high minimum efficiency reporting value (MERV) ratings
D Increase the ventilation in the building
E Orient the building for optimal sun exposure