The owner or operator of each gasoline dispensing facility in the Beaumont-Port Arthur, Bexar County, Dallas-Fort Worth, El Paso, and Houston-Galveston-Brazoria areas, and in the covered attainment counties, as defined in §115.10 of this title (relating to Definitions) shall maintain the following records and during an inspection make the records available at the site upon request to representatives of the executive director, the United States Environmental Protection Agency, or any local air pollution control program with jurisdiction. The owner or operator shall:(1) maintain a record at the facility site of the dates on which gasoline was delivered to the dispensing facility and the identification number and date of the last leak testing, required by §115.224(2) of this title (relating to Inspection Requirements), of each tank-truck tank from which gasoline was transferred to the facility. The records shall be kept for a period of two years; and(2) maintain for a period of two years:(A) a record of the results of any testing conducted at the gasoline dispensing facility in accordance with the provisions specified in §115.225 of this title (relating to Testing Requirements); and(B) a record of the gasoline throughput for a 24-month rolling calendar period beginning January 1, 1991. The records must contain the calendar month and year, and the total facility gasoline throughput for each calendar month.