Delaware Code Title 30. State Taxes § 5135. Records

(a) Preparation of records.--For each location where special fuel is delivered or placed into the fuel supply tank of a motor vehicle by a licensed special fuel dealer or a licensed special fuel user, said dealer or user making such delivery shall prepare and maintain such records as the Department of Transportation may reasonably require with respect to all such deliveries, and with respect to inventories, receipts, purchases, use and sales or other dispositions of special fuel.  Also, each licensed special fuel supplier shall prepare and maintain such records as the Department of Transportation shall reasonably require with respect to all sales and/or deliveries of special fuel to customers.

(b) Retention of records.--The records required under this section shall be retained for a minimum of 3 years and shall be available, at all reasonable times, for examination by representatives of the Department.