New Jersey Zinc/Mobil Chemical Site Illinois EPA Proposes Remedy for Unnatural Sediments in South Ditch at the DePue-New Jersey Zinc/Mobil Chemical National Priorities List Site: Fact Sheet #7

              New Jersey Zinc/Mobil Chemical Site
Illinois EPA Proposes Remedy for Unnatural Sediments in South
Ditch At the DePue-New Jersey Zinc/Mobil Chemical National
Priorities List Site
Fact Sheet #7
September 2002
DePue, Illinois
INTRODUCTION
The Illinois Environmental Protection Agency (Illinois EPA) and the United States Environmental
Protection Agency (U.S.EPA) are proposing a remedy for the unnatural sediments in the South Ditch at
the DePue-New Jersey Zinc/Mobil Chemical Site in DePue, Illinois. This proposed remedy would remove
the unnatural sediment by a combination of hydraulic and mechanical dredging, stabilizing the removed
sediments and containing them in an on-site unit until a final remedy is selected for the much larger
quantities of similar material on and around the plant site.
Illinois EPA is issuing this Proposed Plan as part of the public participation requirements pursuant to
Section 300.430(f)(2) of the National Oil and Hazardous Substances Contingency Plan (NCP) (40 Code
of Federal Regulations (CFR) 300.430(f)(2)). This Proposed Plan summarizes information that can be
found in greater detail in the Remedial Investigation/Feasibility Study (RI/FS) report and other
documents contained in the Administrative Record file for this site. The Administrative Record file for
the site is located in the Illinois EPA, Bureau of Land records in Springfield, Illinois and at the Selby
Township Library in DePue, Illinois. Illinois EPA and U.S.EPA encourage the public to review these
documents to gain a more comprehensive understanding of the site and Superfund activities that have
been conducted at the site. Section 117 of the Comprehensive Environmental Response, Compensation,
and Liability Act of 1980, as amended (CERCLA or Superfund) requires publication of a notice and brief
analysis of a Proposed Plan for site remediation.
This Proposed Plan provides background on the site, describes the alternatives being considered to
remediate the unnatural sediments in the south ditch, presents the rationale for identification of the
proposed alternative and outlines the public's role in helping the Illinois EPA make a final decision on
the remedy.
BACKGROUND
In 1983, Illinois EPA, U.S.EPA and other state and federal agencies began to investigate the site and
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