Ground-water flow and ground- and surface-water interaction at the Weldon Spring quarry, St. Charles County, Missouri

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Description

Ground-water-level measurements to support remedial actions were made in 37 piezometers and 19 monitoring wells during a 19-month period to assess the potential for ground-water flow from an abandoned quarry to the nearby St. Charles County well field, which withdraws water from the base of the alluvial aquifer. From 1957 to 1966, low-level radioactive waste products from the Weldon Spring chemical plant were placed in the quarry a few hundred feet north of the Missouri River alluvial plain. Uranium-based contaminants subsequently were detected in alluvial ground water south of the quarry. During all but flood conditions, lateral ground-water flow in ... continued below

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76 p.

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Imes, J.L. & Kleeschulte, M.J. December 31, 1997.

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Description

Ground-water-level measurements to support remedial actions were made in 37 piezometers and 19 monitoring wells during a 19-month period to assess the potential for ground-water flow from an abandoned quarry to the nearby St. Charles County well field, which withdraws water from the base of the alluvial aquifer. From 1957 to 1966, low-level radioactive waste products from the Weldon Spring chemical plant were placed in the quarry a few hundred feet north of the Missouri River alluvial plain. Uranium-based contaminants subsequently were detected in alluvial ground water south of the quarry. During all but flood conditions, lateral ground-water flow in the bedrock from the quarry, as interpreted from water-table maps, generally is southwest toward Little Femme Osage Creek or south into the alluvial aquifer. After entering the alluvial aquifer, the ground water flows southeast to east toward a ground-water depression presumably produced by pumping at the St. Charles County well field. The depression position varies depending on the Missouri River stage and probably the number and location of active wells in the St. Charles County well field.

Physical Description

76 p.

Notes

INIS; OSTI as DE98002779

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  • Other Information: PBD: 1997

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  • Other: DE98002779
  • Report No.: DOE/OR/22207--1
  • Report No.: USGS-WRI--96-4279
  • Grant Number: AI05-94OR22207
  • DOI: 10.2172/578597 | External Link
  • Office of Scientific & Technical Information Report Number: 578597
  • Archival Resource Key: ark:/67531/metadc691544

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • December 31, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • June 13, 2016, 7:36 p.m.

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Imes, J.L. & Kleeschulte, M.J. Ground-water flow and ground- and surface-water interaction at the Weldon Spring quarry, St. Charles County, Missouri, report, December 31, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc691544/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.