부지 오염도 평가시 불확실성 정량화 및 저감방안 = Quantification of Uncertainty Associated with Environmental Site Assessments and Its Reduction Approaches

다국어 초록 (Multilingual Abstract)

Uncertainty associated with a sampling method is very high in evaluating the degree of site contamination; therefore, such uncertainty affects the reliability of precise investigation and remediation verification. In particular, in evaluating a site for a small-sized filling station, underground utilities, such as connection pipes and oil storage tanks, make grid-unit sampling impossible and the resulting increase in uncertainty is inevitable. Accordingly, this study quantified the uncertainty related to the evaluation of the degree of contamination by total petroleum hydrocarbon and by benzene, toluene, ethylene, and xylene. When planning a grid aimed at detecting a hot spot, major factors that influence the increase in uncertainty include grid interval and the size and shape of the hot spot. The current guideline for soil sampling prescribes that the grid interval increase in proportion to the area of the evaluated site, but this heightens the possibility that a hot spot will not be detected. In evaluating a site, therefore, it is crucial to estimate the size and shape of the hot spot in advance and to establish a sampling plan considering a diversity of scenarios.

참고문헌 (Reference)

1 김건하, "토양오염도 평가시 시료채취 불확실성 정량화 및 저감방안" 한국지하수토양환경학회 18 (18): 94-101, 2013

2 Gilbert, R.O, "Statistical Method for Environment Pollution Monitoring" Van Nostrand Reinhold Company 320-, 1987

3 KMOE, "Soil Environment Conservation Law"

4 KMOE, "Site Assessment Protocol"

5 KMOE, "Sampling preparation and handling in soil contamination regulation (ES01730)"

6 Gy, P, "Sampling of discrete materials- a new introduction to the theory of sampling I. Qualitative approach" 74 (74): 7-24, 2004

7 Gy, P, "Sampling of discrete materials III. Quantitative approach- sampling of one-dimensional objects" 74 (74): 39-47, 2004

8 Gy, P, "Sampling of discrete materials II. Quantitative approach- sampling of zero-dimensional objects" 74 (74): 25-38, 2004

9 KSME, "Industry Economics Census 2011"

10 Zirschky, J, "Detecting hot spots at hazardous-waste sites" 97-100, 1984