An Assessment of Groundwater Pollution Potential of a Proposed Petrochemical Plant Site in Ulsan, South Korea Hydrogeologic and site characterization and groundwater pollution potential by utilizing several empirical assessment methodologies

지하수 오염 가능성 평가 -수리지질 및 부지특성 조사와 경험적 평가 방법을 이용한 지하수 요염 가능성-

  • Received : 1990.08.20
  • Published : 1990.08.31

Abstract

A tentative hydrogeologic and hydrodispersive study was carried out to evaluate the groundwater pollution potential at a selected site by utilizing empirical assessment methodologies in an advanced stage of quantitative computer aided assessment. The upper most aquifer is defind as saturated overburden and weathered zone including the upper part of highly fractured rock. Representative hydraulic conductivity and storativity of the uppermost aquifer are estimated at 2.88 E-6 m/s and 0.09, respectively. Also calculated Darcian and average linear velocity of groundwater along the major pathway are 0.011 m/d and 0.12 m/d with average hydraulic gradient of 4.6% in the site. The results of empirical assessment methodologies indicate that 1) DRASTIC depicts that the site is situated on non-sensitive and non-vulnerable area. 2) Legrand numerical rating system shows that the probability of contamination and degree of acceptability are classed to "Maybe-Improbable, and Probable Acceptable and Marginally Unacceptable" with situation grade of "B". 3)Waste soil-site interaction matrix assessment categorizes that the study site is located on "Class-8 Site".

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