In order to assert the privilege established under N.C. Gen. Stat. § 8-58.53, the owner or operator of the facility conducting the environmental audit shall, upon inspection of the facility by an enforcement agency, or no later than 10 working days after completion of an agency’s inspection, notify the enforcement agency of the existence of any audit relevant to the subject of the agency’s inspection, as well as the beginning date and completion date of that audit. Any environmental audit report shall include a signed certification from the owner or operator of the facility that documents the date the audit began and the completion date of the audit. (2015-286, s. 4.1(a).)