(a) The excavator may proceed with excavation or demolition on the stated date of commencement if, prior thereto, he or she has received notification from each and every operator notified by the one-call notification system that:
(1) Such operator has no underground facility located in or within 15 feet of the work area; or
(2) That any underground facility located in or within 15 feet of the work area has been staked, marked or otherwise designated in accordance with the provisions of Subpart 753-4 of this Part.
(b) The excavator shall not commence the excavation or demolition on the stated commencement date if he or she has been notified by an operator that the staking, marking or other designations of an underground facility located in or within 15 feet of the work area will not be completed on the stated commencement date. In such case, the operator is required promptly to report such fact to the excavator and to inform the excavator of a prompt and practicable completion date, which in no case shall be more than two working days after the excavator's stated commencement date, unless a longer period is agreed to by both parties.
(c) The excavator may proceed with excavation or demolition prior to the stated date of commencement once he or she has received notification from each and every operator notified by the one-call notification system that each operator has no underground facilities located in or within 15 feet of the work area.
(d) Where available through the one-call notification system, the excavator shall utilize the Automated Positive Response (APR) system in order to obtain the response(s) of the operators that were notified by the one-call notification system.