to provide services similar to those provided for herein without an agreement, then same can only be done with the prior written consent of the other Party. It is understood and agreed that Dynamex may enter into an Agreement with another party to provide its services as described herein in the United States, provided however that any such agreement shall not preclude or prevent Dynamex from providing such Services to Purolator in the United States. 3.12 Attached hereto as Schedule "C" to this Agreement is the Operational Plan for this Agreement. The Operational Plan details the obligations and responsibilities of the Parties pursuant to this Agreement, including but not limited to details as to the handling of freight, the exchange of freight, customer service, billing, invoicing, track and 5 tracing responsibilities. Monthly, the Parties shall conduct operational meetings to adjust co-ordination, operational planning and any other requirements determined by the Parties from time to time. 4.0 RATES 4.1 Subject to all other terms and conditions of this Agreement, Purolator shall pay to Dynamex the rates set forth in Schedule "D". 4.2 Subject to all other terms and conditions of this Agreement, Dynamex shall pay to Purolator the rates set forth in Schedule "E". 5.0 PAYMENT PROCEDURES 5.1 Each Party shall invoice the other twice a month, effective the fifteenth (15th) day and the last day of the month for services rendered for the period since the last invoicing. 5.2 Every invoice shall be accompanied by supporting documentation to substantiate same. Failure to provide such documentation shall result in payment of only the invoiced amount which is supported by the documentation. Any amounts invoiced which are not supported by documentation shall not be paid until such time as documentation is provided by the invoicing Party. It is understood and agreed that