of Excepted Services within fifteen working days otherwise DCL shall have no obligation to pay the Additional Charges. The Additional Charges shall be payable by DCL within fifteen working days of receipt of the invoice. 7.3 Additional Charges for labour and travelling time shall be levied at the rates stated in Schedule One. 7.4 Transportation of Vehicles on SEV transport shall be levied on a time plus mileage basis at the rates stated in Schedule One. 7.5 The time charged from the initial location of SEV transport to the point of collection and back shall be limited to a maximum of one hour each way 10 ***Confidential treatment requested pursuant to a request for confidential treatment filed with the Securities and Exchange Commission. Omitted portions have been filed separately with the Commission. 7.6 Any CDV, SGV, MGV or LGV, reported monthly by SEV as described in Clause 2.7.3 and operating in excess of 25,000 miles per annum shall be subject to an Additional Charge, calculated on a pro-rata basis, levied annually on the first day of each DCL Financial Year 7.7 Subject always to Clause 2.1. SEV reserves the right to supply new, reconditioned or used replacement parts and materials in the performance of its duties hereunder. 7.8 New, used and reconditioned spare parts and materials used in the completion of Excepted Services shall be levied by SEV to DCL at a price agreed by DCL for each case. 7.9 Where SEV employs sub-contractors for Excepted Services, the Additional Charges shall be levied at the rates stated in Schedule One. 7.10 SEV shall have the consent of DCL to undertake Excepted Services without prior notification for which the Additional Charge does not exceed the amount stated in Schedule One and provided it is agreed that the Excepted Services were required;