USGS

Spatial Variation in Hydraulic Conductivity Determined by Slug Tests in the Canadian River Alluvium Near the Norman Landfill, Norman, Oklahoma

Department of the Interior

U.S. Geological Survey

Water Resources Investigations Report 97-4292

 

By Martha A. Scholl and Scott Christenson

 

This report is also available as a pdf.

 

Abstract

Slug tests were used to characterize hydraulic conductivity variations at a spatial scale on the order of meters in the alluvial aquifer downgradient of the Norman Landfill. Forty hydraulic conductivity measurements were made, most along a 215-meter flow path transect. Measured hydraulic conductivity, excluding clayey layers, ranged from 8.4 × 10-7 to 2.8 × 10-4 meters per second, with a median value of 6.6 × 10-5 meters per second. The hydraulic conductivity measurements yield a preliminary concept of the permeability structure of the aquifer along this transect. A low hydraulic conductivity silt-clay layer at about 4 meters below the water table and a high hydraulic conductivity layer at the base of the aquifer appear to have the most potential to affect contaminant transport. Specific conductance measurements show the leachate plume along this transect becomes attenuated between 150 and 200 meters downgradient of the landfill, except at the base of the aquifer, where it extends at least 225 meters downgradient of the landfill.

Contents

Abstract

Introduction

Purpose and Scope

Acknowledgments

Previous Studies

Slug-Test Method

Hydraulic Conductivity Determinations

Preliminary observations of aquifer structure and plume location

Summary

References Cited

Appendix

  1. List of slug tests performed June 1996 and October 1996 at the Norman Landfill, Oklahoma

For sale by

 

U.S. Geological Survey,

Information Services

Box 25286,

Denver Federal Center

Denver, CO 80225

 

For additional information:

 

District Chief

U.S. Geological Survey

202 NW 66 St., Bldg 7

Oklahoma City, OK 73116

 

For more information about the USGS and its products: Telephone: 1-888-ASK-USGS

World Wide Web: http://www.usgs.gov/

 

For more information about USGS activities in Oklahoma, visit the USGS Oklahoma District home page.

 

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report.

 

 


 

 

This report is available online in Portable Document Format (PDF). If you do not have the Adobe Acrobat PDF Reader, it is available for free download from Adobe Systems Incorporated.

 

Download the text of the report (PDF, 1.9 MB)

 

 

Document Accessibility: Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools convert Adobe PDF documents into HTML or ASCII text, which then can be read by a number of common screen-reading programs that synthesize text as audible speech. In addition, an accessible version of Acrobat Reader 5.0 for Windows (English only), which contains support for screen readers, is available. These tools and the accessible reader may be obtained free from Adobe at Adobe Access.

 

Top


U.S. Department of the Interior, U.S. Geological Survey
Persistent URL: http://pubs.water.usgs.gov/wri974292
Page Contact Information: GS Pubs Web Contact
Last modified: Thursday, September 01 2005, 02:04:11 PM
FirstGov button  Take Pride in America button