Geology near a hazardous waste landfill at the headwaters of Lake Marion, Sumter County, South Carolina

Prowell, David C.

doi:10.3133/ofr90236

Cited by 2 publications

(9 citation statements)

References 7 publications

(11 reference statements)

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“…Prowell (1990) showed that the Williamsburg Formation is represented by the Lang Syne Member and the Rhems Formation is represented by the Sawdust Landing Member in the study area. Prior to the biostratigraphic work by Prowell (1990), the Lang Syne Member was thought to be a member of the Rhems Formation (Muthig and Colquhoun, 1988;Colquhoun and others, 1983;Environmental Technology Engineering, Inc., 1988a). The shallowest sediments investigated are the upland fluvial deposits and the Santee alluvium, which are locally confined but function as watertable aquifers in much of the area.…”

Section: Geologic Settingmentioning

confidence: 86%

“…The deepest sediments investigated are from the Black Creek Group of late Cretaceous age. Also of late Cretaceous age and overlying the Black Creek Group is the Peedee Formation (Prowell, 1990), formerly mapped at the facility as the Black Creek Formation (Environmental Technology Engineering, Inc., 1988a sediments of the Black Mingo Group, which are divided into the Williamsburg Formation and the Rhems Formation. Prowell (1990) showed that the Williamsburg Formation is represented by the Lang Syne Member and the Rhems Formation is represented by the Sawdust Landing Member in the study area.…”

Section: Geologic Settingmentioning

confidence: 99%

“…Also of late Cretaceous age and overlying the Black Creek Group is the Peedee Formation (Prowell, 1990), formerly mapped at the facility as the Black Creek Formation (Environmental Technology Engineering, Inc., 1988a sediments of the Black Mingo Group, which are divided into the Williamsburg Formation and the Rhems Formation. Prowell (1990) showed that the Williamsburg Formation is represented by the Lang Syne Member and the Rhems Formation is represented by the Sawdust Landing Member in the study area. Prior to the biostratigraphic work by Prowell (1990), the Lang Syne Member was thought to be a member of the Rhems Formation (Muthig and Colquhoun, 1988;Colquhoun and others, 1983;Environmental Technology Engineering, Inc., 1988a).…”

Section: Geologic Settingmentioning

confidence: 99%

“…Additional borings and piezometers were drilled and installed in later years (Wehran Engineering, 1982;Environmental Technology Engineering, Inc., 1988a;. Prowell (1990) examined the geology of the study area as part of this investigation. Hydrogeologic assessments were done by Aware Inc. (1985a, 1985b), Waddell (1988), and Gordon and Powell (1989).…”

Section: Previous Studiesmentioning

confidence: 99%

“…The geologic units, described by Environmental Technology Engineering, Inc. (1987) and Prowell (1990), were divided into hydrogeologic units (figs. 2 and 3) on the basis of lithologic and hydraulic characteristics.…”

Section: Hydrogeologic Frameworkmentioning

confidence: 99%

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Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina

Vroblesky¹

1994

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The geologic units in the vicinity of a hazardous-waste landfill near Pinewood, S.C., were divided into hydrogeologic units on the basis of lithologic and hydrologic characteristics. A quasi-3-dimensional, finitedifference model was constructed to simulate groundwater flow through the hydrogeologic framework. The simulation results indicated that if contaminants were released to the first water-bearing zone underlying the central and western parts of the disposal areas, the Lang Syne water-bearing zone, they would move in a southwesterly direction. The transport rate of water and unreactive constituents would be from about 0.6 to 7 feet per year. Constituents that interact with the aquifer matrix would move more slowly. Although these flow rates indicate that groundwater contamination would require at least 50 years to travel between the disposal area and a nearby (400 ft) potential discharge area, the heterogeneity of the site hydrogeology imparts an uncertainty to the conclusion. Faster travel times cannot be ruled out if contamination enters parts of the aquifer having a higher hydraulic conductivity than those used in this investigation. Faster arrival times at Lake Marion also could occur if there are pathways shorter than about 400 feet between the contamination and an area where it can discharge to the surficial aquifer or streams. Once in the surficial aquifer or in surface water, transport to Lake Marion would be substantially faster. If contaminants were released on the eastern side of the groundwater mounds near landfill section II or, possibly, the southeastern part of landfill section I, then initial flow directions would be approximately eastward, toward the water-level depression in the eastern part of the facility. Ground water within the water-level depression would flow downward to underlying water-bearing sands. Contaminant movement in the underlying lower Sawdust Landing water-bearing zone would be southwestward toward Lake Marion. The transport rate of water and nonreactive constituents in the lower Sawdust Landing water-bearing zone would be from about 8 to 20 feet per year. Constituents that interact with the aquifer matrix or are affected by microorganisms would move more slowly. Contamination transport from disposal areas to Lake Marion along this route could require more than 200 years. Close agreement between simulated steady-state heads and measured average water levels for 1989 indicated that the conceptualization of the hydrogeologic framework is consistent with the observed distribution of hydraulic head in the various aquifers and water-bearing zones.

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Section: Geologic Settingmentioning

confidence: 86%

Section: Geologic Settingmentioning

confidence: 99%

Section: Geologic Settingmentioning

confidence: 99%

Section: Previous Studiesmentioning

confidence: 99%

Section: Hydrogeologic Frameworkmentioning

confidence: 99%

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Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina

Vroblesky¹

1994

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Impact assessment of the effects of the former uncontrolled landfill of Sidi Yahya Oujda (Morocco) on groundwater using physicochemical, geological and electrical triple approaches

Arabi,

Chaïeb,

Khattach

et al. 2024

E3S Web Conf.

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This study is part of the geophysical mapping of the former site of the uncontrolled Sidi Yahya Oujda landfill. It also aims to show the contribution of the integrated interpretation of geological and geophysical data in the diagnosis of illegal dump sites. The application was made on the rehabilitated site of the former uncontrolled Oujda landfill located in Sidi-Yahya, which was closed in 2005. Geological and geophysical studies by electrical resistivity tomography (TRE) were carried out at the site level. Nine 475 m long TRE profiles with an investigation depth of up to 110 m were generated to image the subsoil. Analysis of the physicochemical and metallic composition of the leachate from this site and the groundwater taken from 3 nearby wells revealed significant pollution of the leachate with a COD of 12780 mg. O2/L and a BOD5 of 525.34 mg. O2/L. The groundwater had high electrical conductivity (average of 3.9 mS/cm), chloride content (710 mg/L average) and nitrate content (74.62 mg/L average). The metal concentrations in the leachate and groundwater far exceeded the Moroccan standards, with high average values for zinc (619.22 μg/L), copper (318.12 μg/L), nickel (233.76 μg/L), chromium (169.16 μg/L), L) and iron (12940 μg/L). Geologically, a context was highlighted with lateral lithological variations and the presence of faults. The waste/leachate layer has low resistivity values (<10 Ω m) and a thickness of up to 25 m. It rests on terrains of different geological natures. In the southern part of the site, there is a layer of red clay with a thickness of up to 50 m and low resistivities (<10 Ω m), which overlies a layer of limestone with high resistivity values (>100 Ω m). In the northern part, we encounter a discontinuous and thin layer of fractured dolomites with resistivities greater than 50 Ω m. This layer of dolomite rests on a layer of clays.

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Geology near a hazardous waste landfill at the headwaters of Lake Marion, Sumter County, South Carolina

Cited by 2 publications

References 7 publications

Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina

Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina

Impact assessment of the effects of the former uncontrolled landfill of Sidi Yahya Oujda (Morocco) on groundwater using physicochemical, geological and electrical triple approaches

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