Article 8 of A401–2007 SP requires the Contractor and the Subcontractor to describe the portion of the Work for which the Subcontractor is responsible. Once the Subcontractor’s portion of the Work has been defined, the flow‐down provision requires the Subcontractor to assume toward the Contractor all obligations and responsibilities that the Contractor assumes toward the Owner in the Prime Contract as applicable to the Subcontractor’s portion of the Work. Therefore, any Sustainable Measures required of the Contractor in the Sustainability Plan that are contained in the Contractor’s portion of the Work would become the responsibility of the Subcontractor.