For the achievement of Materials and Resources Credit, Interiors Life Cycle Impact Reduction, Option 1. Interior Reuse, how are hazardous materials accounted for in the calculation?

For the achievement of Materials and Resources Credit, Interiors Life Cycle Impact Reduction, Option 1. Interior Reuse, how are hazardous materials accounted for in the calculation?
A . Included in the numerator only
B . Included in the denominator only
C . Included in both the numerator and denominator
D . Excluded from both the numerator and denominator

Answer: D

Explanation:

For the LEED AP ID+C V4 Materials and Resources Credit, under Interiors Life Cycle Impact Reduction, Option 1: Interior Reuse, hazardous materials that are remediated as part of the project must be excluded from the calculation. This ensures that the assessment of reused materials does not inadvertently promote the retention of hazardous substances in the interior space.

Reference: The information is based on the guidelines provided by the U.S. Green Building Council, specifically for the LEED v4 Interior Design and Construction rating system, which outlines the exclusion of hazardous materials from life cycle impact calculations1.