N.C. Gen. Stat. § 7A-109.4: Records of offenses involving impaired driving.

The clerk of superior court shall maintain all records relating to an offense involving impaired driving as defined in G.S. 20-4.01(24a) for a minimum of 10 years from the date of conviction. Prior to destroying the record, the clerk shall record the name of the defendant, the judge, the prosecutor, and the attorney or whether there was a waiver of attorney, the alcohol concentration or the fact of refusal, the sentence imposed, and whether the case was appealed to superior court and its disposition. (2006-253, s. 24.)