Geohydrologic data for the St. Charles County well field and public-water supply 1985-91, and projected public-water supply, 1995 and 2000, for St. Charles County, Missouri

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Geohydrologic data for this well field and public water supply data for St. Charles County were compiled to assist US DOE in developing the St. Charles County well field contingency plan to ensure a supply of water in the event that the well field becomes contaminated from wastes (radioactive, nitroaromatic, other) stored in the Weldon Spring quarry. The well field consists of 8 wells penetrating the entire thickness of the Missouri River alluvial aquifer and is 98-116 feet deep. Aquifer tests were conducted on 3 occasions at 3 different locations in the well field. Calculated transmissivities range from 900 to ... continued below

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33 p.

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Mugel, D.N. October 1, 1996.

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Description

Geohydrologic data for this well field and public water supply data for St. Charles County were compiled to assist US DOE in developing the St. Charles County well field contingency plan to ensure a supply of water in the event that the well field becomes contaminated from wastes (radioactive, nitroaromatic, other) stored in the Weldon Spring quarry. The well field consists of 8 wells penetrating the entire thickness of the Missouri River alluvial aquifer and is 98-116 feet deep. Aquifer tests were conducted on 3 occasions at 3 different locations in the well field. Calculated transmissivities range from 900 to 60,200 feet squared per day; hydraulic conductivities ranged from 23 to 602 feet/day. Calculated/estimated storage coefficients ranged from 0.005 to 0.2. Tracer test showed effective porosity of 0. 21-0.32. Point dilution showed a ground-water velocity of 0.83 foot/day. From 1985-91, ave daily water supply from the well field and water treatment plant increased from 5.76 to 10.23 Mgd; this is projected to increase to 11.0 Mgd in 1995 and to 12.2 Mgd in 2000. The water department`s projections of peak daily demands from customers indicate that these demands will exceed the capacity of the treatment plant in 1995 and will exceed the capacities of the well field and plant during 2000.

Physical Description

33 p.

Notes

U.S. Geological Survey, Earth Science Information Center, Open-File Reports Section, Box 25286, MS 517, Federal Center, Denver CO 80225; OSTI as DE97000188

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  • Geosciences workshop, O`Fallon, MO (United States), 21 Feb 1996

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  • Other: DE97000188
  • Report No.: DOE/OR/21985--93-455
  • Report No.: CONF-9602126--Summ.;USGS-OFR--93-455
  • Grant Number: AI05-91OR21985
  • Office of Scientific & Technical Information Report Number: 390528
  • Archival Resource Key: ark:/67531/metadc688022

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 30, 2015, 8:59 p.m.

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Mugel, D.N. Geohydrologic data for the St. Charles County well field and public-water supply 1985-91, and projected public-water supply, 1995 and 2000, for St. Charles County, Missouri, article, October 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc688022/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.