Which step is NOT part of the procedure to determine if a pipe is difficult to locate?

Determining whether a pipe is difficult to locate typically involves a series of systematic steps designed to assess the situation thoroughly. Among these steps, conducting a visual scan is necessary to get a preliminary understanding of the area and potential indicators for locating the pipe. Calling a supervisor for assistance is also a common procedure, particularly if the situation requires additional expertise or resources. Troubleshooting all access points is crucial as it helps identify possible entryways or access routes to locate the pipe.

Environmental conditions are indeed important in pipe location, but assessing them is not a direct step in the standard locating procedure. For instance, while environmental factors like soil type or ground cover can affect the tools and techniques used for locating pipes, they are not typically categorized as a procedural step. Instead, environmental assessment is often considered part of the background information that may influence locating methods rather than an active step in the locating procedure itself. Thus, assessing environmental conditions is not explicitly part of the steps to determine if a pipe is difficult to locate, making this the correct answer.