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American Public Works Association APWA Uniform Color Code for Marking Underground Facilities

Common Ground Alliance (CGA) Best Practices Guide (v 14.0 - March 2017)

Common Ground Iowa

Iowa Code Chapter 480 (Underground Facilities Information)

Iowa One Call

Iowa One Call Excavators Manual (2017) - pdf download

Iowa Utilities Board

Office of the Attorney General of Iowa - Iowa One Call Law page

Information on Damages to Underground Facilities in Iowa:
2017  (Iowa PHMSA Pipeline and CGA Dirt Data for damages to underground gas pipelines)

Contact Information
Iowa Department of Justice, Office of the Attorney General
Environmental Law Division
1305 E. Walnut St.
Des Moines, IA 50139
P: 515-281-5164

Jacob Larson, Assistant Attorney General
P: 515-281-5341

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