In this episode of BUILD St. Louis, host Kerry Smith interviews Leonard (Len) Toenjes, President of the Associated General Contractors of Missouri (AGCMO), about excavation safety and the Missouri One Call 811 system. Toenjes discusses the importance of the One Call system and the need for modernization to improve effectiveness and safety. He also mentions the federal study that ranked Missouri near the bottom of the list in terms of cost to utilities and rate payers due to inaccurate locates or locates not done on time.