1. Plaintiff A Co., Ltd. based on the construction contract concluded on July 22, 2013 between the Plaintiffs and the Defendant.

1. Basic facts

A. 1) The Plaintiffs concluded a contract for a construction project with the joint contractors representing A, which is the taking-off of the Plaintiff’s lawsuit, (the share ratio of the Plaintiffs A80%, the taking-off of the Plaintiff’s lawsuit, and 10%, respectively, and hereinafter “joint contractors of this case

A) On March 5, 2013, an entity G with respect to “F construction work” performed by the Public Procurement Service and a long-term continuing construction project, which is established on March 5, 2013 (hereinafter “instant entity”).

() On March 6, 2013, the total additional construction amount was KRW 118,984, 170, 385 for the commencement date, and the total completion date on March 6, 2013, the contract was concluded on March 4, 2019. (2) The Plaintiffs concluded a construction contract with the Public Procurement Service on July 22, 2013 with respect to the contract amount of the secondary number of construction works (hereinafter “instant construction works”) between the Public Procurement Service and the said construction works (hereinafter “instant construction works”). On July 19, 2013, the date of commencement was determined as KRW 11,456,00,000 for the instant construction works and the date of completion on July 19, 2013 for the commencement date.

The parts related to this case among the general conditions of the construction contract to be incorporated into the contents of the instant construction contract (hereinafter “instant general conditions”) are as shown in the attached Form.

3) In order to urgently recover from typhoon damage, the instant construction works are referred to as “TP” among structures installed in the sea area among the small-wave block (a structure to resolve waves entering the breakwater) existing.

(4) The contract of this case was changed on June 30, 2014 to the 4,564,663,400 won, and the date of completion on several occasions, respectively, through several changes contract.

B. On September 26, 2013, prior to the removal of TTPP, the Plaintiffs requested that the owner of the instant construction work approve the use of the temporary storage for construction works so that the removal facilities can be stored on the land in compliance with the direction of the Ministry of Environment after consultation with the Ministry of Environment for waste recycling or disposal, since the removal by-products, such as TTPP, are determined as wastes.

B. Each person in charge of the plaintiffs and the ordering office.