Contact your respective 811 provider below either via website or phone to locate and mark underground utilities before you dig.   North Dakota: http://www.ndonecall.com/ North Dakota Boring Contractors Contact 811 | Call 811 North Dakota Boring Contractors Contact 811 | Call 811 Alabama: 811 or 1-800-292-8525 Arizona: 811 or 1-800-782-5348 Arkansas: 811 or 1-800-482-8998 California … Continue reading Contact 811 One Call System