Contact your respective 811 provider below either via website or phone to locate and mark underground utilities before you dig.   Illinois: http://www.illinois1call.com/ Chicago: https://www.cityofchicago.org/city/en/depts/cdot/supp_info/dig_site_notificationprocedures.html   Illinois Boring Contractors Contact 811 | Call 811 Illinois 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