DHS Directive 023-02 Environmental Compliance Program provides guidance and direction for compliance with environmental laws, regulations and executive orders. DHS Directive 025-01, Sustainable Practices for Environmental, Energy and Transportation, provides guidance and direction for compliance with green purchasing and other sustainable practices contained in Executive Order 13423. Contracting officers shall ensure that solicitations and contracts contain appropriate sustainable practices requirements, provisions and clauses. Contractors shall support the DHS Environmental Policy by taking appropriate actions to eliminate or reduce their impacts on the environment.

[77 FR 50635, Aug. 22, 2012]