Where the County is using its own computer gateway for the provision to person(s) of electronic map data, payment shall be made by the person(s) at the time of delivery. Where the County has entered into an agreement with a third party contractor to provide electronic map data through the third party contractor’s computer gateway, the third party contractor shall handle the billing and invoicing of the fees charged and shall agree to send by U.S. mail that portion of the fee due the County to the County’s Electronic Map Generation Fund within 10 business days of the receipt of payment of fees to the third party contractor by the person(s) making the purchase. [Ord. 4-7-08A § 5.]