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The Board of Audit and Inspection examined the business economy of the project of the four major rivers encouraged by the administration of Lee Myung-bak and concluded that it was' very weak".
The Board of Audit and Inspection announced on 4, "The results of the badysis of the current status of the four rivers restoration project and performance badysis The BAI concluded that the total cost of 50 years was 31 trillion won, while the total profit was only 6.6 trillion won, which was a very economical project.
The cost-benefit ratio (B / C) greater than 1.0 is considered economically feasible, while the four rivers project is only 0.21. Considering that there is no flood during the badysis period, the benefits of flood prevention are treated as "0 won", which is very unexpected.
According to the Audit and Inspection Council, the four major river projects invested 23.675 billion won, or 800 billion won over the original project of 22.2 billion won. On the basis of quadrennial data from 2013 to 2016, the total cost and total profits for 2013 were estimated and the total cost estimated at 31 trillion won, including 24 269 billion won in project costs, 4.28 trillion won in maintenance expenses, respectively The total benefits were 6.6 trillion won, including an improvement in water quality of 236.3 trillion won. acquisition of water resources (water resources) of 1 trillion 48.6 billion won, water of 3 trillion 524.7 trillion won and global sales of 1.81 trillion won
As a result of the badysis, the level of uncertainty of legal certainty was 127.7 ㎞ before the 4 rivers, and 53.7 ㎞ after the project maintained dimensional safety. . It is said that the section where the risk of flooding was reduced by the four major rivers was only 74.0 km.
In addition, it is badyzed that 4 major rivers will contribute to 4.0% of the water scarcity as life, industry, agricultural water at the national scale by 2020.
The results of the water quality survey conducted by the Korean Environmental Engineering Association have shown that biological oxygen demand (BOD) and chlorophyll-a (Concentration of algae) showed a mixture of improved and deteriorated areas. The chemical oxygen demand (COD) has proven to be generally worse.
BOD improved in six out of 16 cases, with three being exacerbated. Chlorophyll-a was improved in 6 and 6 was deteriorated. COD has been improved in one of 16 cases and seven cases have been exacerbated.
In particular, the Nakdong River has been shown to have worsened COD. Upstream, BOD and chlorophyll-a also deteriorated. In the Youngsan River, COD and chlorophyll-a also deteriorated.
From the month of August to March of this year, the BAI (Ministry of the Knowledge Economy), the badessment of water quality (Korea Environmental Engineering Association), economic badysis (Seoul National University
Kim Yoon-ho reporter [email protected]
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