A Free Call to 811 Will Help Keep You Safe and Avoid Expensive Repairs OAKLAND, Calif., Aug. 9, 2024 /PRNewswire/ -- Sunday, Aug. 11, is recognized as National 811 Day, to raise awareness of the importance of making a free call to 811 before any digging project, large or small. Whether you are a property owner or a contractor, calling 811 will help ensure that projects involving digging can be done safely while avoiding expensive repairs or fines due to damaging underground utility lines. Underground utilit ...