Observed each year on Aug. 11 (8/11), National 811 Day serves as a reminder that safe excavation begins long before the first shovel enters the ground. A free request to have underground utility lines located and marked helps protect homeowners, contractors, utility workers, and the critical infrastructure that communities depend on every day. If you strike an underground utility line or suspect a natural gas leak while digging:Stop work. Never attempt to repair a damaged utility line yourself. For more information about Pennsylvania One Call, legal requirements for safe excavation, or to submit an excavation request, visit pa1call.org or dial 811.