This chapter provides guidance on how Contracting Officers (COs) should manage contract changes, and how COs and Federal Project Directors should maintain alignment between project and contract management under non-M&O cost reimbursement contracts for capital asset projects, environmental remediation, decontamination and decommissioning, facility operations, and other projects. This chapter has three sections. Section I provides pre-award guidance on the CO's role in planning for the management of contract changes. Section II provides post award guidance on the CO's role for managing contract changes to align with the project baseline. Section III has Definitions, Acronyms and References. When the contract supports a capital asset project, this chapter complements Department of Energy (DOE) Guide (DOE G) 413.3-20 - Change Control Management Guide. This chapter applies to contracts utilizing performance measurement baselines. M&O contracts and Advisory and Assistance Service contracts are excluded from this DOE Acquisition Guide Chapter.