Selected LEED-AP-BD+C Leadership in Energy and Environmental Design (LEED) Questions Answers

Sustainable Sites (SS) Credit: Site Development - Protect or Restore Habitatencourages projects touse native or adapted vegetationto restore natural habitats and support local biodiversity.

Using non-native or non-adapted plants negatively impacts this creditbecause these plants often requireexcessive irrigation, fertilizers, or pesticides, which canharm local ecosystems.

Vegetated roofs (green roofs) are eligible for this credit, but only if they usenative or adapted plant species.

Heat Island Reduction (Option C)focuses on materials and shading, not plant selection.

Light Pollution Reduction (Option D)relates to outdoor lighting, not vegetation choices.

The use of non-native plants most directly affects habitat restoration efforts, making Option B the correct answer.

(Source: Official LEED BD+C Reference Manual)

Adding a concrete walkway will increase the site’s impervious cover, which is the percentage of the site area that does not allow water to infiltrate into the ground1. Impervious cover can affect the site’s stormwater management, heat island effect, and habitat quality.The project team should consider using permeable paving materials, vegetated roofs, or rain gardens to reduce the impervious cover and mitigate its impacts2. The other options are not directly impacted by adding a concrete walkway.Project density calculations are based on the floor area ratio and the number of occupants, not the site features3.Erosion and sediment control plan during construction is required for any site disturbance, regardless of the type of material used4.Air quality as a result of off gassing that occurs as concrete cures is not a significant issue for outdoor applications, and can be minimized by using low-emitting concrete products5.

Makeup water meters, conductivity controllers and overflow alarms

According to the Water Efficiency Prerequisite for Indoor Water Use Reduction, cooling towers and evaporative condensers must be equipped with makeup water meters, conductivity controllers and overflow alarms to reduce water consumption and prevent water waste. These devices help monitor and control the water quality, flow rate and level of the cooling system, and alert the operators of any malfunctions or leaks.

As per the LEED AP Building Design + Construction (LEED AP BD+C) V4 resources, the installation of makeup water meters, conductivity controllers and overflow alarms is a requirement for cooling towers and evaporative condensers under the Water Efficiency Prerequisite for Indoor Water Use Reduction. This prerequisite aims to reduce indoor water consumption by setting baseline and efficiency standards for fixtures, fittings, appliances, equipment and processes. For cooling towers and evaporative condensers, the prerequisite also requires efficient drift eliminators that reduce drift to a maximum of 0.002% of recirculated water volume for counterflow towers and 0.005% of recirculated water flow for cross-flow towers. For more detailed information, you can refer to the web-based reference guide in the credit library atUSGBC’s official website.

TheCommissioning Authority (CxA)plays a key role in ensuringbuilding systems meet the Owner’s Project Requirements (OPR).

TheCxA must review the OPRto confirm that design and construction decisions align with theowner ' s sustainability and performance goals.

TheCxA should be independentandcannot be part of the project ' s design or construction management teamif the project is larger than 20,000 sq. ft.

TheCxA reports findings to the owner, not the architect.

While experience is required,LEED does not specify that only one project is neededfor eligibility.

(Source: Official LEED BD+C Reference Manual)