Rapid surface sampling and archival record system

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Description

A number of contamination sites exist in this country where the area and volume of material to be remediated is very large, approaching or exceeding 10{sup 6} M{sup 2} and 10{sup 6} M{sup 3}. Typically, only a small fraction of this material is actually contaminated. In such cases there is a strong economic motivation to test the material with a sufficient density of measurements to identify which portions are uncontaminated, so extensively they be left in place or be disposed of as uncontaminated waste. Unfortunately, since contamination often varies rapidly from position to position, this procedure can involve upwards of ... continued below

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5 p.

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Barren, E.; Berdahl, D.R.; Penney, C.M. & Sheldon, R.B. December 1, 1995.

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Description

A number of contamination sites exist in this country where the area and volume of material to be remediated is very large, approaching or exceeding 10{sup 6} M{sup 2} and 10{sup 6} M{sup 3}. Typically, only a small fraction of this material is actually contaminated. In such cases there is a strong economic motivation to test the material with a sufficient density of measurements to identify which portions are uncontaminated, so extensively they be left in place or be disposed of as uncontaminated waste. Unfortunately, since contamination often varies rapidly from position to position, this procedure can involve upwards of one million measurements per site. The situation is complicated further in many cases by the difficulties of sampling porous surfaces, such as concrete. For example, on concrete the standard wipe test provides results that are strongly operator- and surface condition-dependent. The results are not usually available real time, because the wipe samples are sent to a remote laboratory for analysis, entailing a delay of days to weeks between sampling and results. Further, the cost of analysis of a clean sample is usually the same as that of a contaminated sample; analysis of clean samples thereby increases the total analysis costs considerably. Another method for surface/sub surface characterization is to obtain a boring or a drilling. This method also involves the off-site analysis of the drilled material, incorporating the time and economic penalties described above. Other disadvantages of drilling techniques are disfiguration of the surface and distribution of contamination through byproduct dust. It is for the above reasons that we have chosen to develop thermal sampling methods for characterization of concrete, transite, and contaminated bulk debris. The sampling system we describe has been designed to greatly reduce the economic penalty posed by these difficulties.

Physical Description

5 p.

Notes

OSTI as DE96003463

Source

  • Environmental technology development through industry partnership, Morgantown, WV (United States), 3-5 Oct 1995

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  • Other: DE96003463
  • Report No.: DOE/MC/30174--96/CO585
  • Report No.: CONF-9510108--13
  • Grant Number: AC21-93MC30174
  • Office of Scientific & Technical Information Report Number: 162140
  • Archival Resource Key: ark:/67531/metadc625387

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  • December 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 1, 2016, 4:52 p.m.

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Barren, E.; Berdahl, D.R.; Penney, C.M. & Sheldon, R.B. Rapid surface sampling and archival record system, article, December 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc625387/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.