Positive Response is how member utility companies communicate with excavators about the status of the ticket. It lets the excavator know if an underground utility is marked, unmarked, not in conflict (clear, or high priority). A Positive Response may include one or more of the following: markings or documentation left at the job site, callback, fax, or an automated response system. A positive response allows the excavator to know whether all facility owners/operators have marked the requested area prior to the beginning of the excavation.