# Part 523 - Environment, Energy and Water Efficiency, Renewable Energy Technologies, Occupational Safety, and Drug-Free Workplace

- Subpart 523.1 - Sustainable Acquisition Policy

  - 523.101 General.

  - 523.102 Definitions.

  - 523.103 Applicability.

  - 523.104 Procedures.

  - 523.105 Sustainability Exceptions.

  - 523.106 Compliance Monitoring and Reporting.

- Subpart 523.3 - Hazardous Material Identification and Material Safety Data

  - 523.303 Contract clauses.

  - 523.370 Solicitation provision.

- Subpart 523.4 - Use of Recovered Materials and Biobased Products

  - 523.404 Agency affirmative procurement programs.