Borit Asbestos Superfund Site


/f Stony

PROGRESS
"PROMISE

A detailed look at the work of EPA's Superfund Removal Program

SUPERFUND SITE

Ambler, PA January 2016

-------
2 I BORIT ASBESTOS SUPERFUND SITE

Above: Aerial photograph of the BoRit site taken in 2009. Top Right: Before EPA began work at the site in 2008, visible asbestos-containing debris
littered the site surface. Bottom Right: Slurry containing asbestos was also present in some areas of the site.

ASSET OR BURDEN?

Today, a former asbes-
tos waste dump located at the
intersection of the Borough of
Ambler and Whitpain and Up-
per Dublin Townships, in Mont-
gomery County, Pennsylvania,
is well on the way to becoming
an attractive green space.

With expansive grassy
fields, strewn with seasonal
wildflowers, and an 11-acre
reconstructed pond, the BoRit
Asbestos Superfund Site is
already welcoming migrating
birds, and in the not-too-distant
future, an 11 -acre portion of the

site may be re-established as
a community park. Yet, some
people say the site is just a dirt
-covered mound of asbestos
waste that threatens the wel-
fare of surrounding communi-
ties and future recreational
users.

Is the BoRit Asbestos
Superfund Site just a pile of
dirt-covered waste? Or is there
more there than meets the
eye? What is under all that
grass and greenery? The U.S.
Environmental Protection
Agency (EPA) wants you to

know about the work that has
been done at the BoRit site to
protect human health and the
environment now and in the
future.

What is under all that
grass and greenery?
The U. S. EPA wants
you to know about the
work that has been
done at the BoRit site.

THE BOOM TO BUST
CYCLE

There was a time when
the Ambler area was primarily
agricultural. The arrival of the
railroads, however, not only
expanded local farmers' access
to larger markets, it attracted
the attention of entrepreneurs
whose initial pharmaceutical
enterprise evolved into the
lucrative emerging industry of
asbestos products manufactur-
ing. In Ambler, manufacturing
facilities could take advantage
of the abundance of available
water resources provided by

-------
3 I BORIT ASBESTOS SUPERFUND SITE

For decades, Ambler
Borough prospered as
the home of several
manufacturing facilities
that made asbestos-
containing materials
such as tiles, shingles,
pipes, and fire-retardant
textiles.

the confluence of Wissahickon
Creek, Rose Valley Creek, and
Tannery Run.

For decades, Ambler
Borough prospered as the
home of several manufacturing
facilities that made asbestos-
containing materials such as
tiles, shingles, pipes, and fire-
retardant textiles.The manufac-
turing processes, however, al-
so generated asbestos-
containing wastes that resulted
in the creation of massive piles
of discarded asbestos products
and a thick, paste-like sludge
consisting of calcium car-
bonate, magnesium, and as-
bestos fibers. The waste mate-
rials were left behind under a
cover of soil when the facilities
closed their doors in the latter
half of the 2C 1 century, as the
harmful nature of asbestos be-
came known.

At first, the soil covering
the waste materials supported
dense vegetation that helped to
control erosion. But at the
dump site now known as the
BoRit Asbestos Superfund Site,
time and weather, including
rain and wind storms and reoc-
curring flooding, wore away at
the base of the waste piles and

When EPA reassessed the site in 2006, discarded and broken asbestos-containing materials (ACM) littered the
creeks surrounding the BoRit site and the slopes of the waste piles. These pictures show portions of Wissahickon
Creek and an adjacent slope of the former H/esf Ambler community park which was closed in the 1980s because of
asbestos concerns.

portions of the slopes. By
2006, when EPA reassessed
the site, asbestos-containing
materials (ACM) were visible
in Wissahickon Creek, Tan-
nery Run, and Rose Valley
Creek which border or inter-
sect the BoRit site and run
along the edge of the waste
piles. Broken products were
also exposed on some of the
steeply sloped sides of the
piles, In the portion of the site
located in Ambler, contami-
nated sludge was also
present.

WHY DID EPA
CONDUCT A
REASSESSMENT?

While sampling con-
ducted by EPA and the
Pennsylvania Department of
Environmental Protection
(PADEP) confirmed the
presence of asbestos in the
waste piles at BoRit in the
1980s, the piles were covered
by soil and vegetation which
limited the risk of exposure.
The site was fenced, and no

asbestos was detected in sur-
face water or groundwater
samples taken at the site. As a
result, the site was not a can-
didate for cleanup by EPA and
it remained under the jurisdic-
tion of the PADEP.

In 2005, the BoRit site
was, again, brought to EPAs
attention when community
residents became concerned
about plans for development
on the 6-acre portion of the
waste site located in Ambler

-------
	4 I BQRIT ASBESTOS SUPERFUND SITE

Borough. Initially, concerns
focused on aesthetic and
nuisance issues, such as
building height and increased
traffic congestion. But soon,
concern shifted to the potential
for construction activities to
cause the release of asbestos
fibers into the air where they
could pose increased health
risks. The concerns of
residents led EPA and PADEP
to plan a sampling event to
establish baseline conditions
at the site. EPA conducted
sampling of the entire 32-acre
site, in April 2006, and found
that asbestos-containing
materials were visible on the
surface and in the three adja-
cent waterways. The visible
wastes caused EPA to initiate
a Removal Action at the BoRit
site in July 2008.

WHAT IS SUPERFUND?
The EPA Superfund
program is responsible
for cleaning up some of
the nation's most contam-
inated land and respond-
ing to environmental
emergencies, oil spills,
and natural disasters. To
protect public health and
the environment, the
Superfund program
focuses on making a visi-
ble and lasting difference
in communities, ensuring
that people can live and
work in healthy, vibrant
places.





Jig

EPA contractors picking up miscellaneous debris and asbestos-
containing nriaterials (ACM) from the streams and the site surface at the
start of work at the site. The materials filled more than 288 shipping
containers and were taken off site to a permitted disposal facility.

-------
5 I BORIT ASBESTOS SUPERFUND SITE

TANNERY RUN

Aerial view of site, taken in November 2015, shows work in progress on the park parcel and work completed on the pile parcel and the former reservoir now
called the pond. Improvements made to the pond include a 1/2-acre island for nesting migratory birds and a viewing area and trails along Maple Avenue,

CLEANUP ACTIONS
TAKEN UNDER
SUPERFUND LAW

The U.S. EPA is author-
ized to take actions under a
number of environmental laws
including the Comprehensive
Environmental Response,
Compensation and Liability Act
(CERCLA), commonly known
as the Superfund law. Initially,
the law provided for a tax on
chemical and petroleum indus-
tries. The tax went into a trust
fund that was used to

investigate and cleanup
abandoned or uncontrolled
hazardous waste sites across
the country. Although the tax-
ing authority expired in the mid
-1990s, the name Superfund is
still used to refer to the
Removal and Remedial pro-
grams established under CER-
CLA. It is CERCLA that
provides EPA the authority to
conduct the investigation and
cleanup activities now occur-
ring at BoRit.

THE SUPERFUND
REMOVAL ACTION

Since July 2008, EPA's
Removal Program has been
conducting major construction
activities at BoRit. When the
Removal Program initiated
action, its primary goal was to
eliminate the exposure path-
ways that could allow asbestos
fibers to move in the environ-
ment. The most significant
pathways were surface water,
which was exposing asbestos

waste by eroding the soil cover
along the stream banks, and
wind, which was eroding the
surface of the waste piles and
other areas where vegetation
was sparse. Because asbestos
is most damaging to human
health when it is inhaled, EPA's
primary objective became
preventing water and wind from
eroding the waste piles and
exposing asbestos-containing
materials which might become
friable (crumbly) and release
asbestos fibers into the
environment.

-------
6 I BORIT ASBESTOS SUPERFUND SITE

WHAT HAS THE
REMOVAL ACTION
ACCOMPLISHED?

The Removal Program
is completing construction of a
protective cap across the en-
tire BoRit site, including the
bottom and walls of the on-site
pond. The cap will immobilize
contaminants by preventing air
and water from coming into
contact with contaminated ma-
terials. EPA expects the cap to
be completed in 2016.

There are several
components to the cap. A
heavy geotextile was placed
over the entire 32-acre site.
Next, the geotextile was cov-
ered by a minimum of two feet
of clean soil. Because the site
is bordered by Wissahickon
Creek and Tannery Run and
dissected by Rose Valley
Creek - three waterways
which are prone to flooding -
it is important to protect the
cap from the daily water fiow,
as well as from storm surges.
So, the stream beds were wid-
ened to accommodate heavier
storm-water flows. Then, they
were lined with geotextile and
cabled-concrete mats which
were anchored to the soil with
specialized construction
anchors that were driven deep
into the earth. When they are
opened, the anchors function
much like toggle bolts and can
hold great weight. The cabled-
concrete mats line the creek
bottoms and extend up the
stream banks to above the
historic flood lines.



Top Left: Tannery Run before work began. Middle Left (2): Tannery
Run was significantly widened to help reduce flooding. Geotextile
and cabled concrete mats (CCMs), which are secured with special-
ized anchors that extend deep into the soil, line the open portion
of the stream bed. Bottom Left: Gaps in the CCM were filled with
soil and seeded. Top Right: Worker secures CCM. Bottom Right:
By May 2011, plants had sprouted and held up well to heavy rains.
Plants and their root systems play an important part in controlling
erosion.

-------
7 1 BORIT ASBESTOS SUPERFUND SITE

The 25-ft.-high embankment of Tannery Run, behind Butler Street businesses,
was eroding and destabilizing parking lots. EPA enclosed a 325-foot portion of
the stream to prevent collapse. Top Left: Crew installs the headwall to anchor
the 8-ft-diameter pipe through which the stream will flow. Top Right Water will
flow from the lined open channel into the 8-ft. diameter pipe at the headwall.
Bottom Left: Workers install first section of 8-ft-diameter pipe. Bottom Right:
Liner and pipe were covered with 2,640 cubic yards of stone; the enclosed area
was finished with soil and seeded.

-------
8 I BORIT ASBESTOS SUPERFUND SITE

Upper Left: During Tropical Storm Lee, water and debris burst through the old sluice gate at Maple Ave.,
sweeping down Rose Valley Creek and destroying the recently installed cabled concrete mats (CCM). Although a
setback, the experience helped EPA and the US Army Corps of Engineers to improve and strengthen the stream
liner system. Lower Left: Contractor conducting CCM repair after the storm. Upper Right: Restored and strength-
ened stream liner at Rose Valley Creek headwall. Lower Right: A new swing-gate was installed at Maple Avenue/
Rose Valley Creek sluiceway. The gate is designed to release water slowly during future storm events.

In September 2011,
Tropical Storm Lee
damaged work that had
been done at the BoRit
site, but it also provided
lessons for how to better
protect the site against
future severe weather
events.

Large, heavy rocks, commonly
called rip rap, are layered over
the cabled concrete mats to
help ensure that heavy storms,
do not lift the mats or erode the
stream banks.

In September 2011,
Tropical Storm Lee did cause
damage to earlier work that
had been done at BoRit. But it
also provided lessons for how
to protect the site against future
severe weather events. For
example, storm water carried
debris down Rose Valley Creek
during the storm. When the
debris reached the sluiceway
under Maple Street in West
Ambler, it collected until mount-
ing water pressure caused an
explosive release that endan-
gered residents and damaged
work done downstream at the
Borit site. In addition to repair-
ing the damage at the site,
EPA made improvements to
the Rose Valley Creek channel
at Maple Street by adding a
swing gate to gradually release
water during future storms.
EPA also added a guard rail
upstream to prevent cars and
large debris from entering the

channel. Although the storm
caused a set-back to the
Removal Action, EPA and the
U.S. Army Corps of
Engineers (USAGE) used the
experience to fortify the repair
work at the site and to
strengthen the remaining
work in the stream beds and
the pond. USACE frequently
is contracted by EPA to
provide construction expertise
on projects. Along the Wissa-
hickon Creek, a honeycomb

made of high-density polyeth-
ylene was anchored to the
slopes of the waste piles and
the outer walls of the onsite
pond. The compartments of
the honeycomb were filled
and then covered with soil on
the upper slopes and with
rocks on the lower slopes.
The honeycomb structure
increases the stability of the
site slopes and helps plants to
take root. As sections of the
cap were completed, workers

hydro-seeded the soil with
native grasses and wildflow-
ers. Finally, the seeded areas
were covered with erosion
mats made of straw or, on
steep slopes, woven, high-
performance, turf mats, which
allowed the seeds time to
sprout. The seed mixture was
selected for its suitability to the
local climate and the terrain,
and the stabilizing growth
habits of the plants.

-------
9 I BORIT ASBESTOS SUPERFUND SITE

Top Left: Temporary pumps and a sandbag dam were installed to create a
dry work area for rebuilding Rose Valley Creek. Upper Middle: Stream water was
re-routed through 700 feet of piping and discharged into Wissahickon Creek while
Rose Valley was being widened and lined. Lower Middle: Before geotextile and
cabled concrete mats (CCM) were laid, workers placed a layer of stone on the floor
of Rose Valley Creek. Bottom Left: For added security, rip rap was placed over the
CCM on the stream embankment. Top Right: Rose Valley Creek after being
repaired and widened to reduce future flooding.

-------
10 I BORIT ASBESTOS SUPERFUND SITE

Geotextile was laid over the entire 32-acre site. Additional components of the cap were layered over the textile. Top Left: Workers secure high-density
polyethylene geocells resembling a honeycomb over geotextile on a steep embankment of the Wissahickon. Bottom Left: A crane was used to fill geocells with
stone. Soil was later placed over the geotextile and geocells and seeded. Top Right: Workers place geosynthetic clay-impregnated liner (GCL) on an inside
section of the pond berm to increase structural stability. Bottom Right Workers pore bentonite along the seams of the clay liner. Center: Workers hydro-
seeding berm. Straw mats prevent erosion and help seeds to sprout.

As they mature, the plants will
help to sustain and shelter mi-
grating birds and native wildlife.
The seeds sprouted quickly,
and the roots of the plants now
form a living erosion barrier.

The 10-acre impound-
ment, now referred to as 'the
pond', was also stabilized and
improved. Its walls (aka
berms), which were built of the
same materials as the waste
piles, were unstable in some
areas when work began,
especially along portions of the
Wissahickon and Rose Valley
Creeks. Working with the Army

Corps of Engineers, EPA
drained the pond of 31 million
gallons of standing water and
treated the water before
releasing it into Wissahickon
Creek. The pond bottom
contained the remains of trees
cut down and left in place
when the impoundment was
originally constructed. The tree
stumps were removed, and the
geotextile was laid. Then it
was covered with a minimum
of two feet of soil. In unstable
areas of the berm and the
pond bottom, lime was mixed
into the soggy base materials

Water from the Wissa-
hickon is being pumped
and filtered at a rate of
about 300 gallons per
minute, seven days a
week.

and a clay-impregnated liner
was laid on the inner surface
of the berm to add stability.
The outer walls of the berms
were treated in the same
manner as other areas of the
site with various combinations
of geotextile, soil, polyethylene
honeycomb fabric or cabled

concrete mats, and rip rap, as
appropriate for each area. Ad-
ditionally, an island was con-
structed in the pond to provide
habitat for migratory birds.

On October 5, 2015,
refilling the pond began. Water
from the Wissahickon is being
pumped and filtered at a rate of
about 300 gallons per minute,
seven days a week. EPA
estimates it will take 25 million
gallons of water to reach the
desired surface water elevation
for the pond, which may take
up to four months of pumping
to complete.

-------
111 BORIT ASBESTOS SUPERFUND SITE

Top Left: Workers measure a section of Rose Valley Creek to prepare
stream-bank stabilization plans Middle Left ACM, wetted, bagged and
wrapped in plastic, is transported to Roll-Off shipping containers for dispos-
al off-site. Top Right Onsite access roads were built to ensure vehicles
drove only on clean surfaces. Here, workers are placing geotextile and
covering it with gravel. Lower Right: To suppress dust, water was used
whenever contaminated materials were disturbed.

The construction of
access roads throughout the
site is another example of a
protective measure taken by
EPA to protect workers and
community members. In order
for trucks and heavy equip-
ment to move about the site,
gravel and clean fill were
brought in to build roadways,
all of which were underlain
with geotextile like the rest of
the cap. This ensured that
trucks and other equipment
did not drive through contami-
nated soils. Additionally, even
though vehicles drive only on
clean soil, equipment leaving
the site is washed down to
help limit the amount of nui-
sance dirt tracked through the
neighborhood. While some dirt
is still tracked onto local
streets, EPA wants residents
to know that when soil is
tracked into the streets from
the site it is clean fill.

CAN CONSTRUCTION BE
CONDUCTED SAFELY AT
AN ASBESTOS SITE?

Throughout the work at
the BoRit site, protecting the
health of site workers and
community members was, and
continues to be, EPA's top pri-
ority. Whenever site work in-
volved disturbing contaminat-
ed soil, water cannons were
used to deeply saturate the
soil to prevent the contami-
nants from becoming airborne.
If a release of asbestos fibers
were to occur, EPA personnel
and contractors working on
the site would be the first and
most directly affected popula-
tion. So, protecting onsite
workers' health is of para-
mount importance, and it also
ensures the protection of the
surrounding communities. In
addition to personal air moni-
tors worn by site personnel,
monitors were located along
the fence-line to monitor
ambient air for the presence of
contaminants.

It-



3V

-------
121 BORIT ASBESTOS SUPERFUNP SITE



Top Left: Thirty-one million gallons of water were drained from the old reservoir
through these holding tanks so that work on the pond could begin. Additional pump-
ing was needed after each rain. Upper Middle: From the holding tanks, water went
into these filtration units to be treated and sampled before being released into
Wissahickon Creek. Throughout the project, more than 37 million gallons of water
were treated. Lower Middle: When the water was drained, trunks of trees cut down
decades ago were revealed and had to be removed. Bottom Left Contractors work
on the liner for the former reservoir which includes geotextile, GCL, and at least two
feet of soil. Top Right: After the final soil cover was placed on the berm and seeded,
straw mats were laid to ensure seeds had time to take root. Bottom Right Water
from the Wissahickon was pumped into the finished pond at 300 gallons/minute, 12
hours/day, 7 days/week. When the pond is filled, the stone piles will be submerged
and will provide protection for fish and turtles.

-------
131 BORIT ASBESTOS SUPERFUND SITE

IS REDEVELOPMENT
POSSIBLE?

As the Removal work
progressed, the question of
the BoRit site's future was
raised by various members of
the community. It is up to the
property owners, not to EPA,
to decide how sites may be
reused, as long as redevelop-
ment does not damage the
protections that EPA put in
place. From EPA's perspec-
tive, beneficial reuse or
redevelopment could include a
wide range of possibilities
from open-space plans and
improved natural habitat to
economic redevelopment
scenarios. Of the three parcels
comprising the BoRit site,
beneficial reuses are already
planned by the owners of two
properties.

The pond property is a
bird sanctuary owned by the
Wissahickon Waterfowl
Preserve. It will continue to be
a refuge for migrating birds. In
fact, even in the midst of con-
struction, the birds continued
to come and nest undeterred
by heavy equipment and busy
workers. A small island now
sits in the pond to provide
nesting areas for waterfowl
and protect them from preda-
tors. Several small rock
formations also dot the pond
and will provide sheltering
habitat for small aquatic spe-
cies. Additionally, a new earth-
en peninsula will allow com-
munity members to enjoy the
beauty of the restored envi-
ronment and observe the birds
from a respectful distance
There are currently no plans
for the smallest parcel

which raised local concerns
back in 2005 and is located in
Ambler along Tannery Run
and adjacent to the pond.
However, the largest parcel,
which is owned by Whitpain
Township, is expected to be-
come a community park. The
Township plans to redevelop
the West Ambler* parcel to
replace the park that closed in
the 1980s because of asbes-
tos contamination, To ensure
that EPA's cap will not prevent
such redevelopment in the

EPA is confident that
with proper planning a
community park can he
compatible with the
work EPA is completing
at the BoRit site.

future, EPA worked with
Whitpain Township to locate
the water and sewer lines that
the park will require and to
extend them to the top of the
cap, (It must be noted that this
work was completed by the
township at the township's
expense, as EPA does not
fund the redevelopment of
Superfund properties.) EPA is
confident that with proper
planning a community park
can be compatible with the
work EPA is completing at the
BoRit site. Furthermore, the
routine maintenance that a
community park would require
would provide an added layer
of oversight to complement
any oversight and operation
and maintenance activities
that will be required under
Superfund.

Left: An eagle perches on one of several tree branches anchored in the
pond to provide sanctuary for birds. The rock pile is one of many built to shelter
fish and other aquatic animals. Temporary white flags help to keep birds from
disturbing young plants before roots have matured. Right Wildflowers covered
finished areas of the site in Spring 2015.

-------
141 BORIT ASBESTOS SUPERFUND SITE

THE TRANSFORMATION OF BORIT

Re-engineering makes Superfund site safe for re-use

D« i "1 If- 111 "



What's Going On?

The EPA is wrapping up it's 8-year Superfund removal action at a former asbestos waste
dump. Long dominated by heavy equipment and scraped earth, the 32-acre site is once
again a grassy expanse dotted by wildflowers.

3,000TONS

tons of ACM and other waste were
trucked off site (sprayed with water to
prevent dust). Asbestos is a health risk
when particles get into the air and are
breathed into the lungs.

A PROTECTIVE CAP

Geotextile fabric was placed over the
entire site, including the bottom of the
pond and two creeks. Then the area
was covered by two feet or more of
clean soil and seeded with native grass
and wildflowers to prevent erosion.

RAILROAD AVE.

WHITPAIN TOWNSHIP

RE-ENGINEERED

Rose Valley Creek and Tannery Run
were widened to accommodate storm
flows. Then the bottoms and sides
were lined with cabled concrete mats
and large rocks called rip rap.

AMBLER BOROUGH

DUBLIN TOWNSHIP

-------
151BORIT ASBESTOS SUPERFUND SITE

¦SWOP



¦OWO1

r0i«r0i

r0™*01



r0>«r0i



r01"'01

ro,™*o1

rdi"»o'

ro,"ro1



r01"r01

r0,"r01

r01"'01





15,500

TRUCKLOADS OF CLEAN FILL DELIVERED

37.8 MILLION

GALLONS OF WATER TREATED ONSITE

$23.5 MILLION

SPENT ON RE-ENGINEERING THE SITE

Ambler Borough
Dublin Township
Whitpain Township

The Wissahickon Waterfowl
Preserve pond was restored to
accommodate migrating birds
and aquatic animals.

Whitpain Township plans to
build a park that will serve the
residents of West Ambler and
surrounding neighborhoods.

What's Next



O

Early next year, EPA
will release its Proposed
Remedial Action Plan.

Residents will have a
minimum of 30 days to
provide input in person,
by email or by letter.

When all remedial work
is finished, owners may
redevelop the property as
long as they don't damage
any components of the
EPA remedy.

-------
161BORIT ASBESTOS SUPERFUND SITE



\ I



i l! L/ l [/ > r , - ] ¥ f' *

- r J ' i . P





i ... . i. » .w ¦

.





¦' ' 1

7'~ -• •~v ^



-



k • »i -xJF /wlfrSyAy

•- • v." ~"r . St1, V i SlS

' ir^i i i j

A new trail juts into the pond at the waterfowl preserve.

WHEN WILL WORK AT
THE SITE BE DONE?

The goal of the Remov-
al Program is to complete the
removal action in 2016,
weather permitting. In addition
to completing the Removal
Action, EPA is also completing
a long-term investigation at
BoRit called a Remedial
Investigation/Feasibility Study
(RI/FS). The purpose of the
RI/FS is to study the potential
long-term effects the site may
have on human health and the
environment and to propose a
final plan to address any iden-
tified risks. When the Rl /FS is
completed, it will be summa-
rized in a Proposed Remedial
Action Plan (Proposed Plan).
The Proposed Plan will outline
the options EPA evaluated to
address contamination at the
site, including the agency's
preferred option.

EPA expects to release
the Proposed Plan for BoRit in
early 2016. At that time, the
Proposed Plan will be made
available to the public for
review, and community mem-
bers will be encouraged to
provide their comments in one
of the following ways:

1.	In person by joining mem-
bers of EPA's BoRit site
team at a public meeting
which will be held during
the public comment period;

2.	By sending an email; or

3.	By sending a letter to the
EPA Remedial Project
Manager for the BoRit site.

When the Proposed Plan is
released for review, EPA will
announce its availability and
the commenting options in
local newspapers and by mail
or email to those on EPA's
mailing lists.

TO BE ADDED TO EPA'S MAILING AND/OR
EMAIL LISTS, CONTACT:

Carrie Deitzel

Community Involvement Coordinator

US EPA Region III

1650 Arch Street (3HS52)

Philadelphia, PA 19103-2029

215-814-5525

deitzel.carrie@epa.gov

FOR MORE INFORMATION ABOUT EPA'S
WORK AT BORIT AND TO SEE MORE
PICTURES OF SITE PROGRESS, VISIT:

http://www.epaosc.org/site/site_profile.aspx?site_id=2475
http://www2.epa.gov/ambler

-------