• 환경영향평가
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• 제13권3호
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• pp.115-124
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• 2004

To utilize a closed municipal solid waste landfill site in environmentally secure conditions, it is necessary to verify the stabilization level of landfill leachate. To assess leachate stabilization of an open-dumping municipal solid waste landfill (Noeun Landfill) which is located at the upper drainage basin of Namhan River which flows into Lake Paldang utilized for Seoul Metropolitan water supplies, the surrounding characteristics of the landfill site was surveyed. After then, leachate, groundwater and soil samples from this landfill were chemically analyzed, and the analysis results were evaluated by "The Criteria of Landfill Waste Stabilization(CLWS)", "Discharge Criteria of Landfill Leachate", "The Criteria of Domestic Use in Groundwater Quality", and "Soil Contamination Criteria" promulgated by Korean Ministry of Environment. The closed open-dumping landfill was equipped with the final soil cover, 3 groundwater monitoring wells and poor landfill gas extraction devices for the post-closure management of the landfill. BOD/CODcr ratios in leachate were less than or slightly higher than 1/10. This results seemed to imply that the leachate stabilization level of this landfill based on the CLWS was almost completed. Qualities of groundwater sampled from monitoring wells located at outside of landfill were adequate for "The Criteria of Domestic Use in Groundwater Quality". Finally, concentrations of soil contaminants that were likely to be influenced by this landfill site were adequate to "Soil Contamination Criteria".

• 한국지반환경공학회 논문집
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• 제15권7호
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• pp.39-50
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• 2014

본 연구에서는 도시개발 시 저영향개발(Low Impact Development, LID) 기법을 적용하였을 때, 토양 지하수 환경과 생태경관에 미치는 영향을 총체적으로 평가하는 방법의 framework 구축을 목적으로 문헌조사 연구를 수행하였다. 그 결과 토양 지하수 환경생태 건강성은 (i) 수리지질학적 지하수 오염 취약성, (ii) 생화학적 오염도와 (iii) 토양의 오염 정화능력의 여러 요소들에 의해서 측정되어 종합 및 평가되는 것이라는 개념을 설정하였고, 이들 각각의 요소에 미치는 영향 평가를 위한 측정 항목 선정과 각 요소의 측정치를 종합화해서 등급화 및 지표화하는 방법을 제시하였다. 또한 토양 지하수 환경 건강성과 기존의 환경 영향 평가에서 고려하는 생태 및 경관 요소를 GIS(Geographic Information System)와 AHP(Analytic Hierachy Process) 기반을 활용 및 접목하여 토양 지하수뿐만 아니라 생태 경관 등 LID의 자연환경에 미치는 영향을 총체적으로 평가하는 측정 항목 및 지표 산정과 그에 따른 활용 방법을 제시하였다. LID 기술의 계획 및 설계 단계에서 활용할 수 있는 최적화를 위해서 LCIA(Life Cycle Impact Assessment) 방법상의 framework로 활용하는 것을 본 연구에서는 제안하였다.

• 한국환경복원기술학회지
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• 제22권1호
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• pp.33-45
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• 2019

Compound disaster is the type that increases the impact affected by two or more hazard events, and attention to compound disaster and multi-hazards risk is growing due to potential damages which are difficult to predict. The objective of this study is to analyze the possible impacts of post-fire landslide scenario quantitatively by using TRIGRS (Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Analysis), a physics-based landslide model. In the case of wildfire, soil organic material and density are altered, and saturated hydraulic conductivity decrease because of soil exposed to high temperature. We have included the change of soil saturated hydraulic conductivity into the TRIGRS model through literature review. For a case study, we selected the area of $8km^2$ in Pyeongchang County. The landslide modeling process was calibrated before simulate the post-wildfire impact based on landslide inventory data to reduce uncertainty. As a result, the mean of the total factor of safety values in the case of landslide was 2.641 when rainfall duration is 1 hour with rainfall intensity of 100mm per day, while the mean value for the case of post-wildfire landslide was lower to 2.579, showing potential landslide occurrence areas appear more quickly in the compound disaster scenario. This study can be used to prevent potential losses caused by the compound disaster such as post-wildfire debris flow or landslides.

• 환경영향평가
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• 제31권3호
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• pp.141-160
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• 2022

항만건설사업은 해양생물 서식지 훼손, 해양수질 오염, 해수유동 및 해안 침·퇴적 변화 등 다양한 해양환경적 문제들을 야기할 수 있다. 환경영향평가는 이러한 환경적 문제를 사전에 예방하기 위하여 사업 시행 전에 환경영향평가를 통해 환경적 문제를 미리 예측하고 영향을 최소화하기 위한 방안을 마련하고자 실시한다. 아울러 환경영향평가 검토기관에서는 사업별 환경영향평가 가이드라인 마련을 통해 과학적이고 표준화된 환경영향평가가 실시될 수 있도록 노력하고 있다. 본 연구는 항만건설사업에 특화된 환경영향평가 가이드라인을 마련하기 위하여 지난 13년간(2009~2021년)의 항만건설사업 환경영향평가서 검토의견을 토대로 환경영향평가 시의 문제점들을 살펴보고, 기존 환경영향평가서 작성 가이드라인 등을 참조하여 항만건설사업 해양환경 환경영향평가에 적합한 가이드라인을 마련하고자 하였다. 본 가이드라인은 중점 검토항목인 해양 동·식물, 해양물리, 해양수질 및 해저퇴적물환경 항목을 대상으로, 현황조사, 영향 예측, 저감방안, 사후환경영향조사에서의 중점 검토사항을 정리하여 제시하였다. 해양 동·식물 항목 현황조사 시, 해역 특성 및 항만사업의 성격을 고려한 조사정점 선정 방안과 영향 예측 시, 부유토사 확산으로 인한 해양생물 영향과 준설 및 매립으로 인한 저서생물 서식지 훼손에 대한 영향 예측 실시 방안 등을 제시하였다. 해양물리 항목의 현황조사 시, 조사항목은 해역 특성을 고려하여 필수 조사항목과 부가 조사항목으로 구분하여 제시하였고, 영향 예측 시에는 해수유동실험과 부유사확산실험, 퇴적물이동실험, 수온 및 염분 확산, 해수교환율실험, 파랑변형실험, 항내정온도실험, 해안선변화실험 방안 등을 제시하였다. 본 연구 결과는 항만건설사업 환경영향평가를 수행하는데 있어서 보다 체계적이고 과학적인 조사 및 영향 예측을 유도하여 해양환경을 보호하는데 기여할 것이다.

• 한국습지학회지
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• 제10권1호
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• pp.59-68
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• 2008

각종 개발사업은 사업 전, 사업 중 및 사업 후에 다양한 환경적, 수리학적 및 생태계적 변화를 초래한다. 그 동안의 국내 환경정책은 개발 사업 완료 이후 발생하는 각종 환경적 위해성에 대하여 관리를 하여왔으나, 수질오염총량관리제의 시행과 더불어 개정된 수질 및 수생태계 보전법률에서는 개발 과정 중의 환경적 위해성을 최소화하기 위하여 개발 사업에서의 토사유출 관리를 권고하고 있다. 하지만 현재 국내에는 각종 개발사업장별 토사유출에 대한 기초적인 자료의 해석과 토사유출 원단위 산정의 미흡으로 토사관리에 애로사항을 보이고 있다. 따라서 본 연구에서는 우리나라의 기후학적, 토양학적, 지형적인 특성으로 인해 발생되는 토사유출량에 대하여 환경영향평가대상사업을 중심으로 분석하여 개발사업 면적당 토사유출량에 대한 원단위를 산정하고자 한다. 이러한 연구를 위하여 2000년에서 2005년까지 총 1,036개의 협의된 환경영향평가사업에 대하여 환경영향평가서와 관련 부처(환경부, 농림부, 산림청, 건교부 등)의 자료를 분석하였다. 또한 고랭지 밭의 토사유출량은 고령지 농업에 따른 오염물질 배출 특성조사 최종보고서와 환경부의 소양호 비점오염원 관리지역 관리대책자료를 이용하였다. 이러한 연구를 통한 결과, 각 개발 사업으로 인한 토사유출량에 관한 자료로부터 우선적으로 관리되어야 할 것은 개발 전에는 산지개발, 개발 중에는 체육시설, 개발 후에는 산지개발로 분석되었다.

• 환경영향평가
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• 제6권1호
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• pp.5-31
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• 1997

Strategic Environmental Assessment (SEA) is an assessment process integrated with policy and planning processes considering environmental impacts, not at the level of individual project, but at higher level of policy and plan. Presently, two systems for the SEA are being implemented in Korea. One is "the consultation of environmental investigation into a change in national land utilization", which is to be pre-discussed with the head of the related central administrative organizations, based on the respective individual code. The other is "the consultation of environmental investigation into an administrative plan and project", which is to be pre-discussed with the minister of the environments for the administrative plan. However, these two systems are not integrated procedures with the planning process. In other words, there is a separate post-environmental assessment after planning. Also concrete proposal is not yet prepared for the method and procedure of environmental investigation about details of the planning. Therefore, they do not playa role in taking precautions for environmentally sustainable development. In this study, for the effective environmental investigation at the level of planning, environmental assessment model to be integrated with urban comprehensive plans was developed. The results of this study can be summarized as follows: First, based on the analysis of systematic problems in environmental investigation of this country, the study compared and analysed the SEA method of foreign countries. derived the potential limitations in its applications to this country. Also, the new method in this study, is integrated into planning process by improving the limitations. Thus, we developed the SEA model for this country, which consists of seven steps ; Phase 1; establishing a work program, Phase 2; defining the scop. of the SEA, Phase 3; analyzing an existing environmental situation, Phase 4; examining the consistency with environmental policy, Phase 5; appraising and synthesizing the plan content, Phase 6; proposing recommendations, Phase 7; monitoring and feedback. Second, the two types of application program of the developed assessment model were proposed. One is to integrate this model into planning process, and the other is for the institute and ministry of environments to implement SEA after planning. An aim of this study was developing an environmental assessment model at the planning level which was not yet established in this country and was to apply the model to urban comprehensive plan for inspection. This research will make the effective operation of environmental investigation system possible at the planning level in this country and contribute to the environmental protection at the global level.

• 환경영향평가
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• 제21권3호
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• pp.353-365
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• 2012

This study is understanding characteristics and analyzing contributions of the odor causing compounds of complex-odor & major specified odor materials, and contribution analysis, caused pre-treatment facilities(input and storage) and post-treatment facilities(heating and drying). The target of this study is feeds-production-facilities, located in Seoul. The averaged complex-odor compounds on the boundary line is 21 times higher, and it is 15 times higher than emission standards. In cracking&collection(pre-treatment facilities), the concentration of compounds is 4,881 times, 2,080 times in drying, and 1,442 times in putting&storing facilities. Ammonia occupies the largest portion of the results of monitoring specified odor compounds in input&storage facilities, followed Acetaldehyde > Hydrogen sulfide > Methyl mercaptan. In cracking&collection, Ammonia also occupies most of odor compounds, followed Methyl mercaptan > Acetaldehyde > Dimethyl disulfide > Dimethyl sulfide > Hydrogen sulfide. Acetaldehyde > Methyl mercaptan in drying facilities. On the boundary line, however, the concentration of specified odor compounds stays below emission standards. The result of contribution analysis is that methyl mercaptan has the highest contribution in input & storage, as well as cracking&collection facilities, followed Acetaldehyde > Hydrogen sulfide > Dimethyl sulfide > Dimethyl disulfide. In the drying facilities, the contribution shows Methyl mercaptan > Acetaldehyde > i-Valeraldehyde and Butyraldehyde. Therefore, to decrease odor in foodwaste treatment facilities, proper prevention facilities need to be installed and operated, according to characteristics of individual odor compounds, based on monitored data.

• 환경영향평가
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• 제24권4호
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• pp.375-385
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• 2015

연구는 SEA 사후관리에 대한 국내 외 제도와 해외사례를 조사 분석하여 시사점을 도출함으로 국내 SEA 제도 개선에 밑거름이 되고자 한다. 국내는 SEIA를 시행하고 있으며 현재 대상계획, 구체적인 지표, 실효성 있는 운영방안 등 관련 논의와 연구가 활발히 진행 중이다. 현 상황에서 국내 SEA 사후관리를 위한 구체적인 방안을 제시하기엔 한계가 있으므로 국내 SEA 사후관리를 위한 시사점을 몇 가지 제안하고자 한다. 첫째, SEA 사후관리의 내용은 대상계획에 따라 달라질 수 있으며, 계획의 특성을 고려하여야 한다. 둘째, SEA 사후관리의 주체, 방법, 시기 및 주기, 조치결과 등은 SEA 협의대상에 따라 다르게 적용할 수 있다. 셋째, SEA 사후관리의 지표에는 다양한 환경기준과 더불어 현재 정치 사회 경제적 큰 이슈가 되는 지표들을 함께 고려할 수 있다. 넷째, SEA 사후관리는 해당 대상계획과 환경계획과의 통합과정으로 활용될 수 있다. 다섯째, SEA 모니터링의 결과가 환류될 수 있는 시스템이 마련되어야 한다.

• 한국환경과학회지
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• 제25권12호
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• pp.1597-1611
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• 2016

A numerical assessment using mesoscale-CFD (computational fluid dynamics) coupled A2C (atmosphere to CFD) model was carried out to analyze the variation of microscopic air flow pattern due to the construction of the Chilgok barrage in the Nakdong River. Scenarios with air flow patterns were classified into pre- and post-construction. The increased width of the river due to the construction of the Chilgok barrage induced obvious changes in moisture and the thermal environment around the river. However, air temperature variation was restricted within an area along the windward side in the numerical assessment. The impact of barrage construction on air temperature tends to be stronger during the nighttime than the daytime. It also stronger during the winter than the summer. In the simulation, the convergence of mesoscale wind is more pronounced after barrage construction than before. This is caused by the change of heat flux pattern induced by the widening of the river. Although this work is a case study with restricted atmospheric stability conditions that has several limitations in the numerical simulations, the impacts of the land-use changes brought about by the construction of the barrage in the river acceptable.

• 한국환경과학회지
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• 제11권11호
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• pp.1141-1147
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• 2002

Based on the tide gauge data from the Permanent Service for Meau Sea Level (PSMSL) collected at 23 locations in the Korean coast, the long-term sea-level trend was computed using a simple linear regression fit over the recorded length of the monthly mean sea-level data. The computed sea-level trend was also corrected for the vertical land movement due to post glacial rebound(PGR) using the ICE-4G(VM2) model output. It was found that the PGR-corrected sea-level trend near Korea was 2.310 $\pm$ 2.220 mm/yr, which is higher than the global average at 1.0∼2.0mm/yr, as assessed by the Intergovernmental Panel on Climate Change(IPCC). The regional distribution of the long-term sea-level trend near Korea revealed that the South Sea had the largest sea-level rise followed by the West Sea and East Sea, respectively, supporting the results of the previous study by Seo et al. However, due to the relatively short record period and large spatial variability, the sea-level trend from the tide gauge data for the Korean coast could be biased with a steric sea-level rise by the global warming during the 20th century.