A. On February 18, 2010, the Plaintiff entered into a service contract, such as the patrol of an expressway, under the jurisdiction of the Defendant branch (hereinafter “instant service contract”) with the Defendant and was entrusted with the safety patrol of the branch office B.

B. The contents of the instant service contract are composed of general terms and conditions of the service contract, special terms and conditions of the service contract, and details of the instant service contract related to the instant general terms and conditions of the service contract are as follows. Article 4 (Contract Documents) (1) of the general terms and conditions of the service contract shall be composed of contract documents, personal intent, general terms and conditions of the service contract, special terms and conditions of the service contract, special terms and conditions of the service contract, advance payment terms and specifications, and calculation sheets, and shall have the capability of mutual supplementation and supplementation: Provided, That the calculation sheets shall have the effect as the standard to apply at the time of the adjustment of the contract amount and the payment of the price of the completed portion under these terms and conditions. (1) The adjustment of the contract amount due to price fluctuation shall be governed by Article 64 of the Enforcement Decree and Article 74 of the Enforcement Rule. (1) Where the contracting officer deems it necessary for the purpose of the contract, he may request the parties to the following contract to adjust the contract and to receive the changed price under the provisions of Article 17 (1).