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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Soil and Groundwater Environment
Journal Basic Information
Journal DOI :
Korean Society of Soil and Groundwater Environment
Editor in Chief :
Volume & Issues
Volume 12, Issue 6 - Dec 2007
Volume 12, Issue 5 - Oct 2007
Volume 12, Issue 4 - Aug 2007
Volume 12, Issue 3 - Jun 2007
Volume 12, Issue 2 - Apr 2007
Volume 12, Issue 1 - Feb 2007
Selecting the target year
The Pore Volume of Groundwater Level Drawdown Zone Through Slug/Bail Tests in Sand and Silt Soils
Kim, Tae-Yeong ; Kang, Dong-Hwan ; Chung, Sang-Yong ; Yang, Sung-Il ; Lee, Min-Hee ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 1~7
Slug/bail tests were conducted in sand layer (sbt-1 well), silty sand layer (sbt-2 well), and mixed sand and silty sand layer (sbt-3 well). Hydraulic conductivity and specific storage coefficient were estimated through slug/bail tests. Pore volumes of groundwater level drawdown zone for bail test were estimated by using hydraulic conductivity and specific storage coefficient. KGS model was most suitable interpretation method of slug/bail tests. Average hydraulic conductivity for slug/bail tests were estimated to be
m/sec in sbt-1 well,
m/sec in sbt-2 well, and
m/sec in sbt-3 well. Average specific storage coefficient for slug/bail tests were estimated to be 0.0225 in sbt-1 well, 0.0177 in sbt-2 well, and 0.0259 in sbt-3 well. Dimensionless time and dimensionless wellbore storage were estimated by use of transmissivity, storativity, test time, and specification of test wells. And, dimensionless drawdown were selected by parameter
parameter from Cooper et al. (1967). Radius of influence were estimated by estimated dimensionless time, dimensionless wellbore storage, and dimensionless drawdown. The average radius of influnce for slug/bail tests were estimated to be 1.377 m in sbt-1 well, 1.253 m in sbt-2 well, and 1.558 m in sbt-3 well. Pore volume at groundwater level drawdown zone by dummy withdrawal for bail tests were estimated to be
in sbt-1 well,
in sbt-2 well, and
in sbt-3 well. Pore volume excepted well volume at groundwater level drawdown zone by dummy withdrawal for bail tests were estimated to be
in sbt-1 well,
in sbt-2 well, and
in sbt-3 well.
A study of Geotechnical Property of Stone Filler and Sewage Dredged Soil as Construction Materials
Chung, Jae-Wook ; Jang, Yeon-Soo ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 8~15
Geotechnical and environmental properties of stone fillers are analyzed by several laboratory experiment to identify the possibility of recycling fillers and sewage dredged soils as construction materials. The result of geotechnjical test shows that the sewage dredged soil is a sandy soil which contains 70-80% sand and is useful as an aggregate of construction site. Stone filler has large fine content, which may disqualifies the use as construction materials. However, this material is still useful as a filler in stone quarries or finished mines. From the environmental test, the liquids leached from two types of materials have satisfied the standard of chemical substances in the soil environment law and no harmful effect in ground pollution is expected when recycling.
Evaluation of the Sediments Contamination in the Lake Sihwa
Kim, Seung-Jin ; Bae, Woo-Keun ; Shin, Kyung-Hoon ; Choi, Dong-Ho ; Baek, Seung-Chun ; Yoon, Seung-Joon ; Choi, Hyung-Joo ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 16~24
An investigation on the polluted sediments in the Lake Sihwa and the benthos that inhabited on the sediments was conducted. Cost effective remediation alternatives were derived form the results of the investigation. The sediment samples taken from four sampling points out of thirteen showed relatively high heavy metal (particularly copper) concentrations which exceeded the Effects Range Low (ERL) of the National Oceanic and Atmospheric Administration, USA. The four sampling points were located in front of industrial complexes. Although the heavy metals appeared to have affected the growth of the benthos, the concentration of it did not exceed the criteria of dredging that were developed by Netherlands or the State of Washington, USA. However, contamination by organic matters and sulfur compounds was severe, which exceeded the criteria of dredging that were established in Japan. The sediments taken from the four sampling points which were contaminated with heavy metals showed higher organic matter content in general. The organic matters in the sediments depleted oxygen in summer, which appeared to be fatal to the benthos. A comprehensive analysis on the sediments, benthos, and other environmental impact from the contaminated sediments drew a conclusion that the benthonic environment of the Lake Sihwa needed a stepwise remediation, giving a particular emphasis on the clean up of the sediments upstram of the Lake which could cause odor problems to the nearby residential area.
Enhanced Transport and Risk of a Highly Nonpolar Pollutant in the Presence of LNAPL in Soil-groundwater System: In Case of p-xylene and benz[a]anthracene
Ryu, Hye-Rim ; Han, Joon-Kyoung ; Kim, Young-Jin ; Nam, Kyoung-Phile ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 25~31
Characterizing the risk posed by a mixture of chemicals is a challenging task due to the chemical interactions of individual components that may affect their physical behavior and hence alter their exposure to receptors. In this study, cell tests that represent subsurface environment were carried out using benz[a]anthracene (BaA) and p-xylene focusing on phasetransforming interaction to verify increased mobility and risk of highly sorbed pollutants in the presence of less sorbed, mobile liquid pollutants. A transport model was also developed to interpret results and to simulate the same process on a field scale. The experimental results showed that BaA had far greater mobility in the presence of p-xylene than in the absence of that. The main transport mechanisms in the vadose zone were by dissolution to p-xylene or water. The transport model utilizing Defined Time Steps (DTS) was developed and tested with the experimental results. The predicted and observed values showed similar tendency, but the more work is needed in the future study for more precise modeling. The field-scale simulation results showed that transport of BaA to groundwater table was significantly faster in the presence of NAPL, and the oral carcinogenic risk of BaA calculated with the concentration in groundwater was 15
87 times larger when mixed with NAPL than when solely contaminated. Since transport rate of PAHs is very slow in the subsurface without NAPL and no degradation of PAHs was considered in this simulation during the transport, the increase of risk in the presence of NAPL is expected to be greater for the actual contaminated site.
Geochemical and Environmental Isotope Study on the Groundwater from the Youngcheon Area, Gyeongbuk Province
Kim, Geon-Young ; Koh, Yong-Kwon ; Bae, Dae-Seok ; Won, Chong-Ho ; Jung, Do-Hwan ; Choi, Byoung-Young ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 35~53
Geochemical and isotope studies on the groundwater system of the Youngcheon area were carried out. Most groundwaters belong to Ca-
types and some groundwaters belong to Na-
type. Geochemical characteristics of these groundwaters were mainly affected by their basement rocks around the boreholes. High
content of groundwater is the result of reaction with sulfate or sulfide minerals in the host rock. Ca was originated from the carbonate minerals in the sedimentary rock. After the groundwater was saturated with calcite, the Na-
type groundwaters were evolved by the reaction with plagioclase for a relatively long residence time. This explanation was supported by low tritium contents of Na-
data indicate that the groundwaters are of meteoric water origin and there was no difference between the various types of waters. Grondwaters from the boreholes BH-1, BH-9 and BH-12 showed the geochemical and isotopic characteristics of deep groundwater. Most borehole groundwaters except them did not show the systematic geochemical variations with sampling depth indicating that the shallow and deep groundwaters were mixed with each other throughout the study area. The results of water quality analysis indicate that the study area is highly contaminated by the introduction of agricultural sewage.
A Development of Groundwater Level Fluctuations Due To Precipitations and Infiltrations
Park, Eun-Gyu ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 54~59
In this study, a semi-analytical model to address groundwater level fluctuations in response to precipitations and its infiltration is developed through mathematical modeling based on water balance equation. The developed model is applied to a prediction of groundwater level fluctuations in Hongcheon area. The developed model is calibrated through a nonlinear parameter estimator by using daily precipitation rates and groundwater fluctuations data of a same year 2003. The calibrated input parameters are directly applied to the prediction of groundwater fluctuations of year 2004 and the simulated curve successfully mimics the observed. The developed model is also applied to practical problems such as a prediction of a effect of reduced recharge due to surface coverage change and a induced water level reduction. Through this study, we found that recharge to precipitation ratio is not a constant and may be a function of a precipitation pattern.
Characterization of Groundwater Quality and Recharge using Periodic Measurements of Hydrogeochemical Parameters and Environmental Tracers in Basaltic Aquifers of Jeju Island
Koh, Dong-Chan ; Cheon, Su-Hyun ; Park, Ki-Hwa ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 60~71
Groundwater from public wells was monitored during one year with two month interval for hydrogeochemical parameters and chlorofluorocarbons (CFCs) as environmental tracers in Jeju Island. Concentrations of major cations and
show variation less than 10% whereas
and dissolved oxygen (DO) showed larger variation though DO variation did not change oxic or suboxic condition.
concentration has no consistent seasonal pattern with the largest variation of 35%. Groundwater ages determined by CFCs became temporarily younger by 5 years in October for groundwater with ages of 15 to 25 years, which can be attributed to infiltrating water in rainy season. Compared to air temperature, groundwater temperature has much smaller variation with no phase difference, which can be accounted for by a two-component model consisting of infiltrating water from surface and deeper groundwater with negligible temperature variation. The relatively small variation in groundwater age and temperature indicates that groundwater recharge through fast flow-paths is much smaller compared with basal groundwater in terms of aquifer storage.
A Study of Influence Factors for Immobilizing Heavy Metals in Contaminated Soil
Hwang, An-Na ; Na, Seung-Min ; Khim, Jee-Hyeong ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 72~77
Soil contamination by heavy metals was environmental concern due to its effect on human. In this study, monopotassium phosphate
used as phosphate source to remediate the contaminated soil with heavy metals and factors such as reaction time, initial concentration and pH of phosphate solution, species of heavy metal (lead, cadmium, zinc) and particle size were controlled. Heavy metals were removed in the order Pb > Zn > Cd and the maximum effectiveness was achieved for Pb. The removal efficiency of lead was from 95% to 100% and occurred rapidly occurred during 10 minutes. Mechanism of lead immobilization is dissolution of phosphate and the forming of a new mineral with phosphate having extremely low solubility.
Evaluation of Industrial Byproduct for the Adsorption of Arsenic (V)
Park, Youn-Jong ; Yang, Jae-Kyu ; Choi, Sang-Il ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 78~85
This study provides an attempt to evaluate sanding wastes, generated from a chemical company as a reused adsorbent. Organic impurities in the raw sanding wastes were removed by calcination at
. Aluminum was a major inorganic composition in the raw sanding wastes and increased from 29.09% to 52.73% after calcination. Dissolved concentrations of heavy metals from the calcined sample were below 0.3 mg/L in a stability test at pH 2. From the pH-edge adsorption experiments with the calcined sanding wastes, As (V) was found to follow an anionic-type adsorption. Adsorption isotherm obtained with variation of the dosage of the calcined sanding wastes was better described by Freundlich equation than Langmuir one. Freundlich constants of K and 1/n were 4.244 and 0.316, respectively. The As (V) adsorption capacity of calcined sanding wastes estimated from Langmuir isotherm was 13.25 mg/g. From this study, the calcined sample was identified as a good reusable adsorbent in the view point of stability and adsorption capacity on As (V).
Feasibility of Granular Activated Charcoal as a Detector in Fluorescent Tracer Tests
Lee, Jin-Yong ; Hwang, Hyoun-Tae ; Yi, Myeong-Jae ; Kim, Yong-Cheol ; Yum, Byoung-Woo ;
Journal of Soil and Groundwater Environment, volume 12, issue 4, 2007, Pages 86~93
In recent tests using tracer have been frequently conducted by fluorescent tracers. In this study, granular activated charcoal (GAC) as a detector for the fluorescent tracers (rhodamine WT and uranine) was investigated through laboratory and field tests. In the laboratory tests, tracer concentrations of rhodamine WT and uranine determined by the GAC were slightly different from those of standard solutions but they were excellent in linearity. Results show that GAC is excellent as tracer detector when concentration of the fluorescent tracers is greater than 10 & micro; g/L whileas no obvious differences in mixed solutions of the two tracers due to interferences. Compared to conventional methods of water sampling, field results shows a high potential of GAC as a tracer in the field. Our results also show that wet analysis is better for the lower concentrations of tracers whileas dry analysis is good for high concentrations of tracers. This study demonstrates that fluorescent tracer detection using the GAC is very useful and economical for a hydraulic connection between target areas and very longer period of the tracer test.