1. The Plaintiff (Counterclaim Defendant) paid KRW 202,050,000 to the Defendant (Counterclaim Plaintiff) and the Plaintiff’s counterclaim from September 19, 2019 to January 16, 2020.

1. Basic facts

A. From January 1, 2013, when the ocean dumping of drinking water was completely prohibited, a public disposal facility for treating drinking water (hereinafter “instant facility”) was installed in a port area where the entire quantity of drinking water generated in the port area (such as food and wastewater generated in the process of stuffing food and waste and food and waste generated in the process of stuffing food and waste) was disposed of by means of marine dumping.

2) The business that establishes the business (hereinafter referred to as the “instant business”)

2) During the process of promoting the instant project, the Posisisi was planned to link and treat the water and the drinking water generated from the process of treating the water by using the water treatment plant located in Nam-gu, Nam-gu, as well as the water treatment plant at the port to reduce project costs and operating expenses, simplify the business procedures, and minimize civil petitions. On January 201, 201, the method of treating the drinking water is compared with the method of treating the water without installing the electric treatment plant (energy treatment method) separately from the method of treating the drinking water by installing the Posito fire treatment plant (energy treatment method).

3) At Ports, an average of 120 tons of the drinking water and the water 200 tons of the water shall be expected to be treated as an average of 120 tons of the drinking water and the water 200 tons of the water each day by combining the water treatment plant with the water treatment plant after the first treatment. Around April 19, 201, an application was filed with the National Treasury for subsidies of KRW 2.31 billion, which is 30% of the total budget, around April 19, 201. (b) Between Ports and the Defendant, to entrust the Defendant, a specialized company, with the management and supervision of the instant facilities and other incidental business in accordance with the basic working design management and construction of the instant facilities, and on July 6, 2011, the Defendant and the C Trust Convention (hereinafter referred to as the “Agreement”).