This fact sheet will tell you about:
g The SITE demonstration of the
Zenon cross-flow pervaporation
system scheduled to occur in October
and November 1994 at NAS North
Island, Site 9.
¦ A public Visitors' Day for the SITE
demonstration, which is scheduled
for November 2, 1994. To attend the
Visitors' Day, complete the enclosed
registration forms.
H How you can obtain more
information and become involved in
cleanup activities at NAS North
Island.
Public Meeting
NAS North Island Restoration Advisory
Board (RAB)
Wednesday, October 19 - 6:30 p.m.
Coronado Public Library, Winn Room
640 Orange Avenue
Coronado, CA 92118
Meeting Agenda Items:
•	Site 1 Shoreline Sediments Work
Plan
•	Discussion of RAB operating
procedures
•	Application Process for Community
Co-Chair Election
This meeting is open to the public and
anyone interested in learning more
about the environmental cleanup
program underway at NAS North Island
is encouraged to attend. (For more
information on the Board see
"Restoration Advisory Board" on this
page)
Naval Air Station
NORTH ISLAND
8UPERFUNn INNOVATIVE
TECHNOLOGY EVALUATION
Fact Sheet No.4
October 1994
Introduction
On October 28,1993, the Secretary of the
Navy designated Naval Air Station (NAS)
North Island as one of two Naval
Environmental Leadership Program
(NELP) facilities. The objective of NELP
is to demonstrate innovative cleanup,
conservation, compliance, and pollution
prevention technologies, and to model
focused management techniques in the
environmental arena. The NELP
initiatives will lead the Navy and Marine
Corps environmental programs. NAS
North Island is coordinating
demonstrations with community
members, regulators, corporations,
academia, and other federal agencies.
The NELP initiative seeks to conduct
demonstrations such as the Zenon
Environmental, Inc. (Zenon), cross-flow
pervaporation system highlighted in this
fact sheet. These types of demonstrations
help prove out innovative systems before
initiating larger and more complex
cleanup operations. NELP provides the
Navy a platform to demonstrate, publicize,
and export innovative technologies
throughout the Navy in a more
expeditious and cost effective manner.
Restoration Advisory Board
To increase public involvement in the
environmental cleanup program, NAS
North Island formed a Restoration
Advisory Board(RAB). The Board serves
as a public forum for discussion and
exchange of information related to the
ongoing cleanup efforts of the Navy's
Installation Restoration Program. It
provides opportunities for the community
to review cleanup progress, provide input,
and participate in a dialogue with decision
makers. At NAS North Island, the
Installation Restoration Program focuses
on the cleanup of contamination from past
hazardous waste operations and disposal
practices at 12 sites and protecting public
health.
The Board is comprised of community
members, Navy officials, and state and
local environmental regulators. The
Board was formed to bring together
community members who reflect the
diverse interests within the local
community and to enhance two-way flow
of information and concerns between the
community and the Navy. Members of
the Board have the unique opportunity to
provide advice and ideas directly to
government decision makers. Currently,
11 representative from the community are
Board members. Citizens interested in
serving on the Board may obtain an
application by calling Lieutenant Bob
Walker or Mr. Ken Mitchell, NAS North
Island Public Affairs Office at (619) 545-
8167. Applications received through
October 31, 1994 will still be considered
for membership.
EPA's SITE Program
The U.S. Environmental Protection
Agency (EPA) identifies new methods for
hazardous waste cleanup through its
Superfund Innovative Technology
Evaluation (SITE) Program. Created in
1986, this program demonstrates and
evaluates innovative treatment
technologies that may significantly reduce
the toxicity, mobility, or volume of
hazardous waste. Each year, EPA solicits
1

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~ Carbon Filter
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Heat
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.	Effluent	Carbon Filters
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q j Vacuum Pump and
Outlet to Vent
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and Organics
To
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I	Permeate
PERVAPORATION MODULE
O = Sample Location
Figure 1: Schematic drawing of Zenon's Cross-Flow Pervaporation Process to be Demonstrated
proposals from private technology
developers to demonstrate innovative
technologies under the SITE Program.
The SITE Program also generates reliable
performance and cost information on the
technologies for use in evaluating cleanup
alternatives for similarly contaminated
sites. Because NELP and the SITE
Program have similar goals, the two
programs combined their efforts to
demonstrate the Zenon cross-flow
pervaporation system.
The cross-flow pervaporation system was
developed by Zenon Environmental
Systems, Inc., of Burlington, Ontario,
Canada. The purpose of the
demonstration is to determine the
system's effectiveness in removing
various volatile organic compounds
(VOC) from groundwater at NAS North
Island Site 9. In October 1993, a pilot-
scale cross-flow pervaporation system
successfully treated contaminated
groundwater at a petroleum pumping
station site in Burlington, Ontario. In
December 1993, contaminated
groundwater from Site 9 was treated in a
bench-scale test at Zenon's laboratory in
Ontario. The treated water exiting the
system met all removal requirements. The
SITE demonstration at Site 9 will evaluate
the Zenon system under field operating
conditions.
Technology Description
Pervaporation is a membrane process that
removes organic compounds from
aqueous matrices. The Zenon cross-flow
pervaporation system is designed to
remove VOCs; however, many semi-
volatile organic compounds (SVOC) may
also be removed during system operation.
In the Zenon pervaporation system,
organic-contaminated water is pumped
from an equalization tank at flow rates
ranging from 2 to IS gallons per minute
(gpm). The water first passes through
a 200-micron prefilter to remove debris
and silt particles, and then enters a heat
exchanger where its temperature is raised
to approximately 75 °C (see Figure 1).
The heated, contaminated water then
flows into a pervaporation module
containing dense, polymeric membranes.
These membranes separate organics from
the contaminated water as it passes
through the pervaporation module. The
treated water then exits the system.
Organic vapor and small amounts of water
extracted from the contaminated water are
called permeate. As the permeate exits
the pervaporation module, it is drawn into
a condenser by a vacuum, where organics
are condensed to a liquid. The permeate
liquid then flows to a collection tank.
Because emissions are vented from the
system downstream of the permeate
condenser, organics in the vacuum pump
outlet are minimized. VOCs which do
escape the pervaporation module or
condenser are captured by a series of
carbon filters.
The permeate contains highly
concentrated organic compounds and has
a significantly reduced volume compared
to the untreated water. Because of this
high concentration, the permeate
generally separates into aqueous and
organic phases, making the organic
fraction potentially recoverable. The
concentrated organics are pumped from
the collection tank to storage, and the
collected water can either be returned to
the pervaporation system for further
treatment or removed for disposal.
Pervaporation provides an option to
conventional air stripping or carbon
adsorption technologies for treating
organic-contaminated water. Unlike air
stripping, pervaporation releases
negligible amounts of volatile compounds
to the outside air. Also, pervaporation has
no treatment medium that requires
replacement and disposal, such as
activated carbon.
Site History
NAS North Island is located at the north
end of the peninsula which forms the San
Diego Bay and borders the city of
Coronado in southern California.
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I
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S

Crash Fire and
Rescue Training
Grounds
S9-JMW-1
LEGEND
• Monitoring Well
FORMER CHEMICAL WASTE
DISPOSAL PITS
Suspected Buried
Drum Waste
~
Former Low Level
Radioactive Waste
Staging Area

NOT TO SCALE
Figure 2: Naval Air Station North Island Site 9
Officially commissioned in 1917, NAS
North Island is an active naval complex
that supports naval aviation activities and
units.
Environmental investigations are being
conducted under the Installation
Restoration Program at 12 sites on NAS
North Island, one of which is Site 9. Site
9 is a 15-acre area located on the western
end of NAS North Island. Wastes
disposed of at Site 9 included waste acids,
waste solvents, waste paint materials,
electroplating wastes, and various
petroleum hydrocarbons. Site 9 consists
of three former waste disposal areas (see
Figure 2). The first area is located directly
north of 3rd Street West, where various
liquid wastes were drained into a large,
shallow pit from the 1940s or 1950s until
1968. Contamination from this area has
migrated via groundwater to the
surrounding area. The second area is
located just south of 3rd Street West and
consists of four parallel disposal pits.
From an undetermined date until the mid-
1970s, liquid wastes, including caustics,
acids, and other hazardous materials, were
segregated and disposed of in these
trenches. Contamination has migrated
from these trenches and entered
underlying groundwater. The third area
is located south of 3rd Street West near
the center of Site 9 and extends to its
southern boundary. From the 1950s until
1978, unidentified drummed chemical
waste was buried in this area.
Contamination has migrated from this
disposal area to the underlying
groundwater. Site 9 also contains a
former low-level radioactive materials
staging area; however, no radioactive
waste disposal has been documented near
this area.	
I Ken Mitchell
I Public Affairs Officer
I Naval Air Station North Island
I Code OB P.O. Box 357033
I San Diego, CA 92135
| Name	
| Address	
| City	 State
| Phone( )	
|_Affiliation		
3
Contaminnants found at elevated
concentrations in the groundwater at Site
9 include trichloroethene (TCE),2-
butanone, vinyl chloride, methylene
chloride, 4-methyl-2-pentanone, cis-1,2-
dichloroethene, and total xylenes. The
primary contaminant to be removed
during the demonstration will be TCE.
Technology Demonstration
The Zenon cross-flow pervaporation
system will be demonstrated over a 5-
week period beginning in October 1994.
About 100,000 gallons of groundwater
will be treated during the demonstration.
The primary objective of the
demonstration is to evaluate the
effectiveness of the Zenon cross-flow
pervaporation system in removing VOCs
from groundwater at Site 9. Data
gathered throughout the demonstration
will be used to calculate the Zenon
system's removal efficiencies. Samples
will be taken of the untreated
groundwater, the treated groundwater,
and the vapor exiting the system (see
Figure 1).
Another objective of the SITE Program
demonstration is to compare the system's
removal efficiencies, operating costs, and
volume of generated waste with
conventional carbon adsorption
technologies. In addition, the
demonstration will document the system's
operating parameters and the potential for
system fouling at Site 9.
Zip
-_l
MAILING LIST
I If you did not receive this fact sheet in the mail, then you are not on our
I mailing list. If you wish to be placed on the Naval Air Station North Island
I site activity mailing list, please complete this form, detach, and mail to:

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The SITE Program has prepared a
detailed quality assurance project plan
(QAPP) outlining the methods and
procedures for testing and evaluating the
technology. When the demonstration is
complete, EPA will prepare a brief
bulletin, a 10-page technology capsule,
and an Innovative Technology Evaluation
Report detailing analytical results and
possible applications of the technology.
These reports are used to evaluate
technologies as alternatives for cleaning
up similar sites across the country.
Community Relations
Program
This fact sheet is part of a continuing
effort to keep the public informed of
environmental cleanup activities
occurring at NAS North Island. During
the demonstration, the public is invited
to attend a Visitors' Day scheduled for
November 2,1994. The Visitors' Day will
enable the community to become familiar
with the ongoing cleanup effort and will
present more detailed information about
the Zenon system and the SITE
demonstration. To attend the Visitors'
Day, complete the enclosed registration
form. For additional forms, call Cindy
Loney of PRC Environmental
Management, Inc., at (513) 241-0149.
The basic goals of the NAS North Island
Community Relations Program are to (1)
inform the community about investigation
and environmental cleanup activities
occurring at NAS North Island, and (2)
provide the community with opportunities
to comment on these activities. To
accomplish these goals, community
meetings and public comment periods are
held at critical decision points in the
cleanup process. These meetings and
comment periods give the community an
opportunity to review and comment on
proposed cleanup alternatives before a
decision is made. During a public
comment period, concerns voiced by the
community will be responded to in writing
and summarized in a document called the
Responsiveness Summary. The
community is notified of meetings and
comment periods through mailings,
advertisements in local papers (including
The North Islander), and announcements
on local radio stations.
Additional Information
Questions or comments about the SITE
Program demonstration should be
forwarded to the EPA Project Manager,
Ron Turner, by October 21, 19-94.
Specific questions regarding the NAS
North Island Installation Restoration
Program, NELP Initiative, the RAB, the
demonstration site, or the technology
should be directed to the following
individuals:
Naval Air Station North Island
For the Restoration Advisory Board:
Arno Bernardo
Environmental Division Director
Naval Air Station North Island
Code18E
P.O. Box 357040
San Diego, CA 92135-7040
(619) 545-1125
For NELP demonstration activities:
Ken Mitchell
Public Affairs
Code OB P.O. Box 357033
Naval Air Station North Island
San Diego, CA 92135-7030
(619) 545-8167
California Department of Toxic
Substances Control
Joyce Whiten
California Environmental Protection
Agency
Department of Toxic Substances Control
Public Participation
P.O. Box 806
Sacramento, CA 95812-0806
(916) 327-4201
U.S. Environmental Protection Agency
Ron Turner
SITE Project Manager
Risk Reduction Engineering Laboratory
U.S. Environmental Protection Agency
26 West Martin Luther King Drive
Cincinnati, OH 45268
(513) 569-7775
Zenon Environmental. Inc.
Philip Canning
Zenon Environmental Inc.
845 Harrington Court
Burlingtaic0ntaii0r^nad8«L3&3£3
(905) 6
Naval Air Station
NORTH ISLAND
&EPA
U.S. Environmental Protection Agency
26 West Martin Luther King Drive
Cincinnati, Ohio 45268
Attention: Ron Turner
Photocopied on Recycled Paper
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