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4대강살리기사업 사후환경영향조사 분석,평가 및 개선방안 연구(A study on environment monitoring of 4 major rivers project)

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Frame of Image 출판등록 제17-254호
서언
하천을 대하는 우리들의 모습은 시대에 따라 많이 변해왔습니다. 과거에는 이수와 치수를 주목적으로 하천을 관리하였다면, 오늘날에는 하천과 함께하는 정책으로 변화되 었습니다. 특히 이상기후가 빈번히 발생하고 있는 요즘과 같은 시대에는 하천관리에 또 다른 고민이 있을 수밖에 없습니다. 지난 정부에서는 이러한 문제를 해결하기 위해 이전의 하천관리 정책과는 근본적으로 다른 대형 하천정비 국책사업인 4대강살리기사업 을 추진하였습니다. 추진과정에서 많은 사회적 논란이 있었던 것이 사실이며, 그러한 논란은 공사가 완료된 현 시점에서도 진행되고 있습니다. 그렇기에 4대강살리기사업에 대한 사후모니터링의 결과는 매우 중요하다고 생각합니다. 본 연구는 현재 진행되고 있는 사후환경영향조사의 현황과 문제점을 도출하고, 공사가 완료되는 시점에서의 사업의 효과와 성과분석을 통해 사업 특성에 맞는 사후모니터링 방안을 도출하고자 추진되었습니다. 연구에서 도출된 결과와 개선방안 등이 향후 하천개 발사업의 정책 수립에 기반이 되길 기대합니다. 본 연구를 수행한 전동준 박사를 비롯한 김지영 박사, 김태형 전문연구원, 은정 연구원 의 노고에 감사를 표하며, 연구에 자문과 조언을 아끼지 않으셨던 계명대학교 노백호 교수, 한국환경영향평가협회 이문형 회장께 진심으로 감사의 말씀을 전합니다. 또한 본원의 최준규, 조공장, 김태윤 박사께도 감사의 말씀을 전합니다.
2013년 12월 한국환경정책․평가연구원 원장 이 병 욱
국문 요약
4대강살리기사업을 대상으로 공사 중 시행된 사후환경영향조사에 대한 분석과 사업 시행에 따른 수환경의 변화 및 성과분석, 사후관리를 위한 수질 및 수생태계 분야 모니터 링 방안 마련과 더불어 향후 하천 수환경의 효율적이고 통합적인 관리를 위한 DB 및 GIS 구축 등을 목적으로 본 연구는 수행되었다. 또한 현재 조사·분석되고 있는 4대강살 리기사업 사후환경영향조사의 실효성을 제고하고, 앞으로 우리나라 주요 하천의 수환경 관리에 필요한 장기적인 모니터링 시스템 구축 및 운영에 기여하고자 하였다. 본 연구는 4대강살리기사업 각 공구들을 대상으로, 환경영향평가서와 2012년도까지의 사후환경영 향조사 보고서의 수질 및 수생태 항목을 분석하고, 관련 수환경 연구사업의 자료·정보 에 대한 분석과 정리를 통해 해당사업의 현황을 파악하였다. 이와 함께 4대강살리기사업 완료 후의 지속적인 수환경 모니터링(안)을 제시하였다. 4대강살리기사업 사후환경영향조사 결과보고서에 대한 분석 결과 공사 이후 매 년 제출되는 보고서에서 오류, 미비 또는 누락된 내용들이 반복되어 나타나고 있어 사후조사 및 보고서 관리가 필요한 것으로 판단된다. 사후환경영향조사 문제점을 개선하기 위해서 대책수립과 더불어 전문가들에 의한 심도 있는 사후환경영향조사 실시의 필요한 것으로 확인되었다. 한강살리기사업 공정의 대부분이 완료되고 있던 2012년 BOD 기준으로 사업 전과 비교하여 BOD값이 다소 높아졌으며, 이러한 수질 악화 양상은 수생태건강성조사사업의 결과에서도 비슷하게 나


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Title 4대강살리기사업 사후환경영향조사 분석,평가 및 개선방안 연구(A study on environment monitoring of 4 major rivers project)
Similar Titles
Material Type Report
Author(Korean)

전동준; 김지영; 김태형; 은정

Publisher

[세종] : 한국환경정책평가연구원

Date 2013-12
Series Title; No 사업보고서 / 2013-05-04
Pages 350
Subject Country South Korea(Asia and Pacific)
Language Korean
File Type Documents
Original Format pdf
Subject Territorial Development < General
Territorial Development < Environment
Government and Law < Public Administration
Holding 한국환경정책평가연구원; KDI 국제정책대학원
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Abstract

This study aims to analyze post-environmental effects evaluation conducted during the construction and changes and performance of water environment in accordance with the projects of the 4 major rivers project. It also aims to establish monitoring method for water quality and water ecological system and to construct DB and GIS for effective and comprehensive management of water environment for the future. In addition, it attempts to improve the effectiveness of post-environmental effects evaluation currently researched and analyzed and contribute to establish and operate long-term monitoring systemrequired to manage water environment in major rivers in Korea. This study targeted each area of the restoration projects of 4 major rivers and analyzed water quality and water ecological system of the evaluation reports until 2012.It also apprehended current status of the project by analyzing and organizing information and data of pertinent water environment research projects. In
addition, it has suggested continual water environment monitoring (draft) after the completion of the project.
After conducting analysis on the reports of the project, it has been suggested that the reports were not properly managed since there have repeatedly been errors every year. It has been confirmed that urgent establishment of
improvement measure and in-depth post-environmental effects evaluation by experts are needed.
In 2012 when most of the process of revitalizing Han River has completed, BOD value has been increased compared to before the project. Deterioration in water quality has also been observed in water ecological health evaluation project. Close monitoring is required whether to determine that deterioration in water quality is temporary due to a large-scale improvement project or derived from structural problem caused by changes in environment. It has been confirmed that the number of migratory birds has sharply been reduced
compare to before the project. In 2012 when most of the process of revitalizing Han River has completed, wetland area in the region was found to be reduced about 29.5%. It can be inferred that the significant reduction in wetland area and habitat and activities of migratory birds are highly related. It has been found that wetland in river basin has weakened in its role after the project since most of the legally protected birds inhabit in wetland has no longer been detected at monitoring.As restoration project of Nakdong River has simultaneously been conducted
throughout the whole areas of the mainstream, water quality of the mainstream of Nakdong River has been deteriorated. While water quality at upper region has been reduced to class II in terms of BOD, there has not been noticeable change in middle and lower stream. In 2011 when intensive dredging process was conducted, most of the regions except upper region of Nakdong River were rapidly deteriorated to class III. It suggests that continual disturbance has been occurred for the whole year. After restoration project of Nakdong River, 44.8% of wetland has been reduced. While the number of clams in winter in Haepyung, Gumi; Hwawon, Daegu and Geumho region, which are closely related regions with Nakdong River project, has been decreased, it has been
increased in lower region of Nakdong river after the project. Looking at the results found in post-environmental effects evaluation of Geungang River project, water quality in 2010 and 2011, when intensive project were conducted, has been increased in terms of BOD. As the number of migratory birds in 2009 to 2012, which was the period of the project, reported to be reduced, close evaluation is required to determine the relationship
between rapid decrease and the project. It has been confirmed that 33.4% of wetland in 1-10 area has been reduced due to the project.In the case of Youngsan River project, water quality has been deteriorated
in general based on BOD. It suggests that there were no improvement effect
on water quality in the mainstream of Youngsan River, rather it is deteriorating.
It has been observed that 52.6% of wetland in 1-8 area has been decreased
due to the project. While it is hard to find out the relationship between
decreased migratory birds and the project at this point, it is needed to find
out the reason by closely monitoring the birds.
In order to determine the effect of 4 major rivers project on water
environment, changes in water environment after the project has been
compared to before. However, looking at the long-term perspective, current
post-environmental effects evaluation should be reviewed. For national projects
such as 4 major rivers project, post-environmental effects evaluation system
should be modified so that it could confirm the long term effect and outcomes
of the project. There should not be a problem if positive effects after the project
were to be confirmed, or else, new restoration plan has to be established. It
is possible to conduct post-environmental effects evaluation within the project,
it is more desirable to form a separate organization to monitor and evaluate
outcome given the importance of the project. It could be operated to the extent
of improving existing evaluation or combining existing long-term monitoring
research project. It is advisable to run long-term monitoring program for water
environment through separate organization or dedicated department.