4. Factor 4 Sustainability Factor Instruc.pdf

This is a Sustainability Factor Instructions document that provides guidance to offerors on completing sustainability requirements for IRA-eligible materials in a design-build construction project. The document contains detailed scoring instructions for evaluating contractors' commitments to using low embodied carbon (LEC) materials.

The instructions outline a scoring system where offerors must specify their IRA Limit commitments (Top 20%, Top 40%, or Better Than Average) for various construction materials including concrete, cement, asphalt, steel, and flat glass. Raw scores of 100, 40, or 20 points are awarded based on whether commitments meet GSA's Top 20%, Top 40%, or Better Than Average limits respectively. These raw scores are then multiplied by material-specific evaluation weights to calculate weighted scores, which are summed for a total sustainability score. The document includes example tables showing how different material commitments translate to weighted scores, with one example totaling 100.00 points and another totaling 72.00 points.