Approval by the department for the construction, operation and maintenance of buried pipeline crossings is not required if the natural contours of the channel and flood plain are maintained. (NOTE: Approval of stream bank protection measures associated with pipeline crossings may need approval under 567-719. (455B).) Approval by the department for the construction, operation, and maintenance of all other pipeline crossings shall be required in the following instances:
Iowa Admin. Code r. 567-71.8