The Project Approach section should describe (or reference) the project management processes that are to be employed; thus all participants can know what to expect and how to participate. In many cases, the SOW will point to a methodology document or website and mention only highlights, such as scope, issues, and risks management.
This section should also describe the communications plan; i.e., meetings, status reports, and collaboration sites, and escalation plan; i.e., who are the PMs and main contacts, and who is the next level of escalation.
Finally, the project approach should touch on how the project will close. In the case of building an application or environment, the team likely transitions to a support organization, where there might be an operational process that must be engaged.