LEED (Leadership in Energy and Environmental Design Certification) Sustainable Sites 4 â Questions and Answers
Question 1: Under the LEED Light Pollution Reduction credit, exterior lighting must comply with ASHRAE/IES 90.1's lighting zone requirements. Which lighting zone applies to a dense urban area with high ambient brightness?
- LZ0
- LZ1
- LZ3
- LZ4 (Correct answer)
Correct answer: LZ4
LZ4 applies to high-activity commercial districts and dense urban areas with the highest ambient brightness, allowing the most exterior light output while still meeting LEED's backlight, uplight, and glare (BUG) limits.
Question 2: A project team wants credit for restoring native habitat on their site. Under Protect or Restore Habitat, what percentage of the total site area (excluding the building footprint) must be restored with native or adapted vegetation for a previously developed site?
- 20%
- 30%
- 50% (Correct answer)
- 75%
Correct answer: 50%
For previously developed sites, LEED requires that at least 30% of the site area (excluding building footprint) be restored with native or adapted plants to earn the credit.
Question 3: Which of the following scenarios would qualify a project for the LEED Joint Use of Facilities credit under Sustainable Sites?
- A university campus shares a gym between its engineering and arts departments
- A school allows the public to use its athletic fields and auditorium after hours (Correct answer)
- A corporate headquarters provides a cafeteria open to both employees and contractors on site
- A hospital shares its parking garage with an adjacent retail center
Correct answer: A school allows the public to use its athletic fields and auditorium after hours
The Joint Use of Facilities credit rewards projectsâparticularly schoolsâthat make their facilities available to the broader community, expanding access to resources and reducing the need for duplicate infrastructure.
Question 4: A building owner installs a green roof covering 55% of the total roof area and uses high-SRI paving for 60% of hardscape areas. Under the Heat Island Reduction credit, which compliance path is this project using?
- Option 1: Non-Roof Measures only
- Option 2: Roof Measures only
- Option 3: Combined Roof and Non-Roof Measures (Correct answer)
- Option 4: Exemplary Performance
Correct answer: Option 3: Combined Roof and Non-Roof Measures
The combined path allows projects to use a mix of qualifying roof and non-roof strategies, calculated together using a formula to demonstrate sufficient overall heat island reduction.
Question 5: The LEED Construction Activity Pollution Prevention prerequisite references which EPA program's requirements as its baseline standard?
- EPA's National Pollutant Discharge Elimination System (NPDES) Construction General Permit (Correct answer)
- EPA's Resource Conservation and Recovery Act (RCRA) guidelines
- EPA's Clean Air Act Title V permit requirements
- EPA's Superfund (CERCLA) remediation standards
Correct answer: EPA's National Pollutant Discharge Elimination System (NPDES) Construction General Permit
The prerequisite requires compliance with the NPDES Construction General Permit, which sets baseline requirements for erosion, sedimentation, and stormwater pollution control during construction.
Question 6: A project achieves exemplary performance under the Surrounding Density and Diverse Uses credit. What is the most likely reason it qualifies for this Innovation credit?
- The project is located within a LEED for Neighborhood Development certified area
- The project exceeds the credit threshold by double the required density or number of uses (Correct answer)
- The project achieves both Option 1 and Option 2 simultaneously
- The project provides on-site transit connections not required by the credit
Correct answer: The project exceeds the credit threshold by double the required density or number of uses
Exemplary performance for most LEED credits is typically achieved by doubling the required threshold or achieving the next defined performance step above the credit requirement.
Question 7: Under LEED BD+C, which of the following is a key difference between the 'Protect or Restore Habitat' credit and the 'Open Space' credit?
- Open Space requires vegetated areas while Protect or Restore Habitat allows hardscape areas
- Protect or Restore Habitat focuses on ecological value of vegetation while Open Space focuses on accessible area for occupants (Correct answer)
- Open Space applies only to residential projects while Protect or Restore Habitat applies to all project types
- Protect or Restore Habitat requires off-site conservation while Open Space is always on-site
Correct answer: Protect or Restore Habitat focuses on ecological value of vegetation while Open Space focuses on accessible area for occupants
Protect or Restore Habitat emphasizes ecological qualityânative plants and wildlife habitatâwhile Open Space focuses on providing accessible outdoor areas for occupant use and well-being.
LEED (Leadership in Energy and Environmental Design Certification) Sustainable Sites 4
Under the LEED Light Pollution Reduction credit, exterior lighting must comply with ASHRAE/IES 90.1's lighting zone requirements.
Which lighting zone applies to a dense urban area with high ambient brightness?