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Region 7

Fact Sheet

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April 2004

Records of Decision Approved

Riverfront Superfund Site, Operable Units 1 & 3, New Haven, Missouri

INTRODUCTION

The U.S. Environmental Protection Agency
(EPA) has released two Records of Decision
(RODs) that address contamination by
hazardous substances at the Front Street Site
(Operable Unit 1) and the Old City Dump Site
(Operable Unit 3) of the Riverfront Superfund
Site in New Haven, Missouri. These actions
are being taken under the Comprehensive
Environmental Response, Compensation and
Liability Act (CERCLA), also known as the
Superfund law.

In July 2003, EPA issued Proposed Plans
presenting the remedial alternatives preferred
by EPA and the Missouri Department of
Natural Resources (MDNR) for addressing the
soil and ground water contamination at the
Front Street Site and ground water
contamination at the Old City Dump Site.

EPA took public comments on the Proposed
Plans for the two operable units at a public
meeting held in New Haven on July 10, 2003,
and through written submissions. Although
EPA and MDNR recommended the proposed
actions to address the contamination, final
decisions were not made until EPA reviewed
public comments. After the public comment
period closed, EPA selected remedies and
published the RODs. The RODs include a
summary of EPA's responses to the comments
received during the public comment period.

ABOTTT l lll CONTAMINATION

The contamination at this site consists of the
volatile organic compound (VOC)

tetrachloroethene (PCE). PCE was first
detected in the City's two public-supply
ground water wells in the northern part of
New Haven in 1986. Following the discovery
of the contamination, two new public-supply
wells were installed in the southern part of the
City, and several investigations were initiated
by EPA and MDNR to determine the source,
rate, and extent of the contamination.

PCE was used as a degreasing agent in
manufacturing operations conducted at Front
Street from 1950 until the 1970s. The EPA
has confirmed that waste PCE was dumped or
washed out of the south doors of the building
located at the site, where it pooled in low
areas along the south side of Front Street.

The Old City Dump Site was used for the
disposal of household, industrial, and
demolition wastes during the period from the
mid-1950s to 1974. Included in the wastes
disposed of in the landfill were industrial
wastes such as unused dies, flammable
solvents, chlorinated solvents, waterproofing
compounds, and waste fabrics.

SELECTED REMEDY

FRONT STREET SITE - OU1

EPA's selected remedy for the Front Street
Site consists of the following four elements:

1. An Advanced Remedial Technology
(ART) well will be installed to treat soils
in the location of the highest soil
contamination. It will also treat the head
of the ground water plume.


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2.	Ground water monitoring will be
conducted on a periodic basis. The
monitoring will include sampling of
monitoring wells and the ART well. The
results of the first two years will be used to
establish Alternate Concentration Limits
(ACLs) for the ground water chemicals of
concern.

3.	The Missouri River will be sampled
annually for VOCs, until the first five-year
review. If ACLs are not exceeded during
the first five years, the Missouri River
sampling will be discontinued.

4.	A restrictive covenant and easement will
be imposed on the site to ensure that the
site is not used in the future in a manner
that may result in unacceptable exposures
to contamination at the site. The restrictive
covenant and easement will also provide
notice of the contamination to future site
owners and users and ensure that current
and future owners provide access to federal
and state officials for future monitoring.

SELECTED REMEDY

OLD CITY DUMP SITE - OU3

EPA's selected remedy consists of the

following three elements:

1.	Monitoring the ground water through
periodic sampling of four monitoring wells
and the monitoring of one surface water
seep.

2.	Monitoring nearby domestic wells on a
recurring basis, particularly immediately
prior to the five-year review.

3.	A restrictive covenant and easement will
be imposed on the site to ensure that the
site is not used in the future in a manner
that may result in unacceptable exposures
to contamination at the site. The restrictive
covenant and easement will also provide
notice of the contamination to future site
owners and users and ensure that current
and future owners provide access to federal
and state officials for future monitoring.

ADDITIONAL INFORMATION

The Records of Decision and other site-related
documents provide details of the nature and
extent of contamination and the work that has
been completed at the site. These documents
are part of the Administrative Record File,
available at the following locations:

New Haven Scenic Regional Library
109 Maupin
New Haven, Missouri

EPA Region 7
Records Center
901 N. 5th Street
Kansas City, Kansas

These, and many other site documents, are
also available at:

http://mo.water.usgs.gov/epa/nh/

If you have questions or need additional
information, please contact:

Dianna Whitaker

Community Involvement Coordinator
EPA, Region 7, Office of External Programs
901 North 5th Street
Kansas City, Kansas 66101

913-551-7003
Toll-free 1-800-223-0425
(Kansas, Iowa, Missouri and Nebraska)
E-mail: whitaker.dianna@epa.gov

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