*>EPA

United States
Environmental Protection
Agency

You're invited

EPA will hold an informational open
house for the Hartford site Tuesday,
Aug. 12, from 3 to 7 p.m. at the
Hartford Community Center, 715 N.
Delmar Ave., Hartford.

For more information

If you want to know more about the
work in Hartford, contact:

Michelle Kaysen

U.S. EPA Site Manager

312-886-4253

kaysen.michelle@epa.gov

Kevin Turner

U.S. EPA On-Scene Coordinator

618-525-3665

turner.kevin@epa.gov

Teresa Jones

U.S. EPA Community Involvement

Coordinator

312-886-0725

jones.teresa@epa.gov

Tom Miller

Illinois EPA Project Manager

618-346-5120

tom.miller@illinois.gov

Mara McGinnis

Illinois EPA Community

Involvement

217-524-3288

mara.mcginnis@illinois.gov
Or visit:

www.epa.gov/region5/cleanup/liartford/
index, htm

To see copies of documents related to
the site, visit the document repository
at:

Hartford Public Library
143 W. Hawthorne St.

Community Open House;
Update on Gasoline Cleanup

Hartford Area Hydrocarbon Plume Site

Hartford, Illinois	August 2014

U.S. Environmental Protection Agency is overseeing several oil
companies while they clean up gasoline pollution lying beneath the village
of Hartford. The oil companies are both removing gasoline and studying
the most effective ways of eliminating more. A vapor removal system was
installed in the village for that purpose. The Hartford Working Group, or
HWG, is the name of the three oil companies that installed the vapor
system and currently runs it. In-home monitoring performed by a fourth oil
company, Apex Oil, also verifies residents are safe from fumes. Apex is
the company responsible for designing the final cleanup plan.

U.S. EPA would like to invite you to an open house (see box, left) to learn
more about our cleanup in the Village of Hartford. Federal and state
agency staff will be available to discuss the cleanup and answer your
questions.

Gasoline collected

Although a final, comprehensive cleanup plan is not yet ready, various
activities have been successful at recovering the gasoline beneath the
village. Through 2013, an estimated 2.25 million gallons of gasoline was
removed and properly disposed of. The removal activities include
skimming the gasoline off the groundwater and operation of the vapor-
removal system located throughout the village. "Groundwater" is an
environmental term for underground supplies of fresh water. Much of the
activity you see on a day-to-day basis in the village is to keep these
removal systems running effectively.

U.S. EPA and the companies continue to study methods to efficiently
remove as much gasoline as possible. For example, the parties responsible
for the pollution are planning to expand the current vapor-removal system.
Enlarging the system will provide further protection to homeowners from
gasoline vapors. It will also work to clean up the soil where gasoline is
trapped in the small spaces between the dirt particles.

Expanding the vapor removal system will require more construction
around the village. U.S. EPA responders will do all they can to minimize
the disruptive nature of the work. However, the expansion project is an
important step forward to finally cleaning up the contamination that has
plagued Hartford for years.

As effective as the vapor removal system has been at protecting residents
and removing gasoline, it eliminates only the gasoline in vapor form. A
significant portion of the gasoline beneath Hartford is liquid and removing
that gasoline through vapor recovery alone could take a very long time. To
accelerate the cleanup, U.S. EPA and the responsible parties are working
to design a system that will remove deeper gasoline in its liquid state. The
deeper gasoline is difficult to remove because it is 30 feet below the
ground and trapped between soil and water.


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Vapor control and removal

The vapor removal system currently contains 120 wells.
This method alone has collected almost 1 million gallons of
gasoline from 2005 - 2013. The system operates like a
vacuum by pulling gasoline vapors out of the soil and
properly disposing them.

The chart below shows the daily and total gallons of
gasoline removed by the vapor system since 2005. This
system protects houses and continues to remove gas. We
believe expanding this method, by targeting certain areas,
will remove a significant amount of contamination. The
system covers a large portion of the village. However, we
have found areas where additional wells could be installed
for better results.

Pumping tests

Last fall we told you about the pumping test that was being
conducted to learn how best to remove the deep liquid
gasoline. We learned several things from that test.

When water was removed from an area holding deep liquid
gasoline by using focused pumping, some of the deeper
gasoline moved into vapor form and fume recovery in that
area increased more than 10 times. During one day alone,
the pumping test removed a maximum of 550 gallons of
gasoline using the five wells in a section called Area A.

The treatment method we used was also successful at
cleaning the water prior to discharge into the village of
Hartford sewer system.

Unfortunately, the test was inconclusive as to recovery
of liquid gasoline. That is why we will be continuing
pumping tests in the near future.

Through testing, we learned liquid gasoline recovery
will work best when the river and groundwater are not
rising.

Upcoming work

This summer and fall will include the following
activities:

•	The pump tests will be continued when
groundwater and river conditions allow.

•	A work plan to optimize and expand the current
vapor removal system will be developed.

•	Houses will continue to be monitored to
confirm vapors are not affecting indoor air.

U.S. EPA is using all of the lessons learned from
various studies to make sure a comprehensive final
cleanup plan is developed. The conditions in Hartford
are unique and challenging. We appreciate the
community's patience and understanding as we try to
develop the best plan possible.

U.S. EPA staff will continue working with the oil
companies, the village, and the community to push the
cleanup forward. We will continue to communicate our
progress with you.

1,200

! Daily Vapor Recovery (gallons)
Cumulative Vapor Recovery (gallons)

800,000

600.000

i
g

£r.

400,000 ^

(8

"3
F

3

300,000 °

This chart shows daily and total gallons of gasoline removed by the vapor system in Hartford since 2005.


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