Session Start Date

6-1-1988

Abstract

A large spill of Polychlorinated Biphenols (PCB's) occurred at Federal Pioneer Limited's Regina Plant in 1976. The City of Regina is underlain by a relatively shallow aquifer which supplies a significant proportion of its drinking water. A remedial measures plan was developed to contain this spill within the boundaries of the site and clean up any contamination which had spread to adjacent property. The remedial measures plan developed involved limiting or reversing the normal downward hydraulic gradient. The three principle measures introduced to accomplish this reversal included the construction of a cutoff wall around the site, installation of a thick surface seal over the entire surface and active dewatering. The performance of these measures was monitored by an extensive network of piezometers and sampling well. Monitoring over the past seven years has produced no evidence of further downward migration of PCB's.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Second Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1988

Document Version

Final Version

Rights

© 1988 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Jun 1st, 12:00 AM

Implementation of Remedial Measures to Contain a PCB Spill

A large spill of Polychlorinated Biphenols (PCB's) occurred at Federal Pioneer Limited's Regina Plant in 1976. The City of Regina is underlain by a relatively shallow aquifer which supplies a significant proportion of its drinking water. A remedial measures plan was developed to contain this spill within the boundaries of the site and clean up any contamination which had spread to adjacent property. The remedial measures plan developed involved limiting or reversing the normal downward hydraulic gradient. The three principle measures introduced to accomplish this reversal included the construction of a cutoff wall around the site, installation of a thick surface seal over the entire surface and active dewatering. The performance of these measures was monitored by an extensive network of piezometers and sampling well. Monitoring over the past seven years has produced no evidence of further downward migration of PCB's.