This document provides information on forensic engineering services from Geotech Engineering and Testing. It describes the levels of forensic investigations from general observations and documentation (Level A) to comprehensive studies including testing, monitoring, and detailed analysis (Level C). It outlines the technical approaches taken to determine causes of issues like inadequate design/construction, materials problems, misuse, or aging. It also describes the field and lab equipment and capabilities for soil and materials testing, including non-destructive techniques like rebar locating and geophysical exploration.