This paper presents design guidelines for fine-grained earthen barriers based upon the fundamental parameters affecting contiminant transport, to provide a methodology for estimating the time required for the contaminant to breakthrough, and to determine the thickness of the earthen barrier for a specified breakthrough contentration and design life. Low-concentration trichloroethylene, and organic contaminant that has the highest reported concentration in the drinking water wells in the United States is used to illustrate the use of the procedure. The limitations and restriction of the model in the prediction of the solute breakthrough are discussed. The fundamental parameter afecting the design are the seepage velocity, retardation factor, and chemical diffusion of the contaminant in the pore fluid. The steps in the procedure for determining the thicknes of the earthen barrier are listed.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1031-52
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00497574
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1990 12:00AM