Except where indicated below, the County does not reimburse extra-help for home to work and work to home travel. Any disputes concerning the interpretation or application of the mileage reimbursement policy shall be referred to the Director of Human Resources, whose decision shall be final. As soon as practicable after notification is received from the IRS of a change in its allowable mileage rate, the County shall increase its rate to coincide with that set by the IRS.