Utility companies or owners must be contacted within established or customary local response times, advised of the proposed work, and asked to locate the underground utility installation prior to the start of actual excavation. What is the importance of contacting utility companies or owners before excavation?
1) To ensure the safety of workers and prevent damage to underground utilities
2) To save time and money by avoiding accidental utility damage
3) To comply with legal requirements and regulations
4) All of the above