The Office of Pipeline Safety (OPS) is the enforcement authority for the "Call Before You Dig" law. You must contact Gopher State One Call (GSOC) at least 48 hours (not including day of call/submission, weekends and holidays) in advance of your plans to excavate. Any individual or company is required to call the GSOC Call Center so that operators can be notified to mark facilities.

OPS partners with the Gopher State One Call Board of Directors as the OPS director also serves on the board, local utility coordinating committees and individual organizations to present more than 80 educational seminars on excavation damage prevention each year.  

As a result of excellent public-private partnerships that enhance communication, educate excavators and support enforcement of the One-Call laws, excavation related damages in Minnesota have declined by over 70 percent since 1996.