This chapter provides a discussion of methods and inspection tools used in the pipe condition assessments. The goal is to leave the reader with a better understanding of how the data obtained in the field regarding the condition of the existing pipeline and the surrounding soil will be used to design the lining system. The material in this chapter is intended to update and complement material provided in the existing literature on inspection technologies. Closed circuit television (CCTV) has been for many years as the workhorse of gravity pipeline inspection. CCTV equipment is used to provide a visual inspection of the internal surfaces of a pipeline. The Pipeline Assessment Condition Program, or PACP, was originally developed by the National Association of Sewer Service Companies in partnership with the Water Resource Centre (WRc) from the United Kingdom in the early 2000s; the first version was based on WRc's Manual of Sewer Condition Classification.