Unknown existing underground utilities can have a significant negative impact and create risk on improvement projects during construction. Schedule delays and cost overruns can occur, resulting in time lost waiting for utility companies to relocate their facilities, design changes during construction, and contractor claims and change orders. ASCE 38 was published in 2002 to attempt to resolve these issues, and was updated in 2022 as the Standard Guideline for Investigating and Documenting Existing Utilities. Find out what has changed and how this document can be used effectively on engineering design projects to mitigate those risks. Also, ASCE 75-22 Standard Guideline for Recording and Exchanging Utility Infrastructure Data has been published and is now available. The purpose of ASCE 75-22 is to specify essential attributes for recording and exchanging utility data including type, location, size, orientation, function, ownership, etc. with a focus on newly installed utilities.