United States
Environmental Protection
Agency
Office of Solid Waste
and Emergency Response
(5104)
EPA-F-OQ-OQ5
March 2000
www.epa.gov/ceppo/
Anhydrous Ammonia Theft
The Environmental Protection Agency (EPA) is issuing this Alert as part of its ongoing effort to
protect human health and the environment by preventing chemical accidents. EPA is striving to
learn the causes and contributing factors associated with chemical accidents and to prevent their
recurrence. Major chemical accidents cannot be prevented solely through regulatory requirements.
Rather, understanding the fundamental root causes, widely disseminating the lessons learned, and
integrating these lessons learned into safe operations are also required. EPA publishes Alerts to
increase awareness of possible hazards. It is important that facilities, SERCs, LEPCs, emergency
responders, and others review this information and take appropriate steps to minimize risk. This
document does not substitute for EPA's regulations, nor is it a regulation itself. It cannot and does
not impose legally binding requirements on EPA, states, or the regulated community, and the
measures it describes may not apply to a particular situation based upon circumstances. This guid-
ance does not represent final agency action and may change in the future, as appropriate.
Wh>o should read this Alert? This Alert discusses the potential hazards of anhydrous
ammonia releases caused by theft, steps facilities can take to prevent theft and how
to minimize health and safety risks associated with accidental releases. This Alert
should be read by individuals who operate and maintain agricultural retail operations,
facilities with ammonia refrigeration systems and farmers who apply anhydrous
ammonia as a fertilizer. Furthermore, this Alert should be reviewed by law enforce-
ment personnel, emergency responders and members of Local Emergency Planning
Committees (LEPCs).
PROBLEM
ACCIDENTS
Anhydrous ammonia is used as an agri-
cultural fertilizer and industrial refrig-
erant. The substance is stored and used
at agricultural retailers and facilities
with ammonia refrigeration systems.
Anhydrous ammonia also is a key
ingredient in the illegal production of
methamphetamines. Illegal drug mak-
ers often steal anhydrous ammonia
from areas where it is stored and used.
Anhydrous ammonia is stored as a liq-
uid under pressure, however, it
becomes a toxic gas when released to
the environment. Anhydrous ammonia
can be harmful to individuals who
come into contact with it or inhale air-
borne concentrations of the gas. When
stolen, the toxic gas can be uninten-
tionally released, causing injuries to
emergency responders, law enforce-
ment personnel, the public, and the
criminals themselves.
A number of anhydrous ammonia thefts
have resulted in accidental chemical
releases from agricultural retailers and
facilities with ammonia refrigeration sys-
tems. The accidents have occurred when
valves were left open as anhydrous
ammonia was siphoned off; locks were
sawed or broken; anhydrous ammonia
was transferred inappropriately into
makeshift containers such as propane
tanks used on barbcquc grills; plugs were
removed from anhydrous ammonia lines
at refrigeration facilities; or the wrong
hoses and/or fittings were attached to stor-
age containers, causing leaks and spills
that would otherwise not have occurred.
Hie following section describes several
recent examples in more detail.
^ Apnl 1997 - More than 2,000 pounds
of anhydrous ammonia were released
from a refrigerated warehouse. A
-------
Page 2
Chemical Accident Prevention: Anhydrous Ammonia Theft
March 2000
fence was cut to gain entry into the facility
and the anhydrous ammonia was removed
through a valve on an oil separator. The
valve was left open. Fortunately, the release
was mitigated by a rain storm that knocked
down the anhydrous ammonia vapor as it
was being released to the outside air. The
warehouse owner replaced the fence,
installed a valve lock on the oil separator
valve, and requested enhanced police surveil-
lance following the incident.
•S April 1998 - An individual attempted to steal
anhydrous ammonia from a nurse tank at a
retail agricultural dealer in Iowa. The liquid
withdrawal valve was left open on the nurse
tank and caused an ammonia release that
quickly vaporized to the air. One passerby
was overcome by the anhydrous ammonia
fumes and collapsed. Another nearby resi-
dent was overcome by ammonia fumes after
leaving her home. Both individuals were
hospitalized. Several other area residents
were evacuated as a precaution. The agricul-
tural dealer installed security lights following
the incident.
S April 1999 - A hose on a 30,000-gallon bulk
storage tank of anhydrous ammonia was cut
intentionally by thieves which resulted in an
accidental release at an Illinois fertilizer
dealer. One police officer was hospitalized
and a highway was shut down for a half
hour.
•S May 1999 - One person was killed when a
makeshift container of anhydrous ammonia
he was holding exploded. The death
occurred when two individuals were driving
on an interstate highway in Missouri. The
driver was severely injured. The ammonia
was to be used for methamphetamine pro-
duction. Since the cause of the smoke ema-
nating from the car was not immediately
known, one fire-fighter, one emergency med-
ical technician, and one member of the gen-
eral public, all of whom stopped to help and
drag the passenger and driver from the car,
were also injured as a result of the ammonia
release.
•S February 2000 - Approximately 1000 pounds
of anhydrous ammonia were released when
someone intentionally opened a valve in the
middle of the night at a fertilizer dealer in
Missouri. The ammonia release caused 300
residents to be evacuated from their homes
and two persons reported respiratory irrita-
tion problems. Ammonia theft has been
almost a weekly occurrence at this facility.
A local law enforcement investigation is cur-
rently underway.
HAZARD AWARENESS
Anhydrous ammonia is used widely and in large
quantities for a variety of purposes. More than
80% of the ammonia produced in the United
States is used for agricultural purposes; less
than 2% is used for refrigeration. Ammonia is
generally safe provided handling, operating, and
maintenance procedures are followed.
Anhydrous ammonia is toxic, however, and can
be a health hazard. Effects of inhalation of
anhydrous ammonia range from lung irritation
to severe respiratory injuries, with possible
fatality at higher concentrations. Anhydrous
ammonia also is corrosive and can bum the skin
and eyes. Liquefied anhydrous ammonia is
stored as a liquid and has a boiling point of
minus 28 degrees Fahrenheit. At this tempera-
ture it can cause freezing bums.
When stored for agricultural purposes and for
use in refrigeration systems, anhydrous ammo-
nia is liquefied under pressure. Liquid anhy-
drous ammonia expands 850 times when
released to ambient air and can form large
vapor clouds. Also, liquid anhydrous ammonia,
if accidentally released, may aerosolize (i.e.,
small liquid droplets may be released along
with ammonia gas) and behave as a dense gas,
even though it is normally lighter than air.
Chemical Emergency Preparedness and Prevention Office
Printed on recycled paper
-------
Page 3
Chemical Accident Prevention: Anhydrous Ammonia Theft
March 2000
Anhydrous ammonia may also cause water
vapor to condense in the air forming a visible
white cloud. Therefore, when anhydrous
ammonia is released to the air, it may travel
along the ground in a cloud instead of immedi-
ately rising into the air and dispersing. This
dense gas behavior may increase the potential
for exposure of workers and the public.
Anhydrous ammonia containers have particular
specifications as required by the Department of
Transportation (DOT). Storage tank specifica-
tions for anhydrous ammonia ensure that it is
stored properly as a pressurized liquid and a
corrosive chemical. For example, some storage
containers for anhydrous ammonia must have
rated pressure relief devices to reduce the likeli-
hood of over pressurization of the container.
Because anhydrous ammonia is corrosive, spe-
cific valves and hoses that do not readily cor-
rode have to be used.
Pure anhydrous ammonia vapors can become an
explosion hazard when in a confined space at
concentrations between 16 and 25 % by vol-
ume. Mixtures involving anhydrous ammonia
contaminated with lubricating oil (e.g. in a
refrigeration system), however, may lower the
explosive range.
Anhydrous ammonia can be recognized by its
pungent odor. Odor threshold varies with the
individual but ammonia can usually be detected
at concentrations above 5 ppm. Concentrations
above 100 ppm are uncomfortable to most peo-
ple; concentrations in the range of 300 to 500
ppm will cause people to leave the area and are
immediately dangerous to life and health.
CLANDESTINE USE
Anhydrous ammonia can be as inexpensive as
$200 a ton for agricultural purposes, but can
sell for as much as $300 per gallon on the black
market when obtained illegally. Very small
amounts of anhydrous ammonia are needed to
make a batch of methamphetamine. In fact,
enough "residual" ammonia is left in a typical
transfer hose for a criminal to use for metham-
phetamine production.
Anhydrous ammonia theft appears to occur in
waves with thieves stealing the chemical multi-
ple times at one location. Criminals prefer to
use anhydrous ammonia to manufacture
methamphetamine because many of the other
ingredients needed to make the drug are avail-
able commercially. Additionally, the fact that
anhydrous ammonia speeds up the manufactur-
ing process to just a few hours makes it attrac-
tive to drug makers.
Attempted thefts have occurred at such unlikely
places as refrigeration systems holding ammo-
nia, underground pipelines carrying ammonia,
and rail cars transporting anhydrous ammonia.
Often thefts are aborted when thieves are
injured or overcome by the toxic gas. During
these aborted attempts, "tools" are often left
behind, such as duct tape, inner tubes, buckets,
coolers, and/or propane barbeque bottles.
Several states have passed legislation making it
a felony to tamper with or steal anhydrous
ammonia, or hold the substance in a non-
approved container.
Special note to first responders:
Anhydrous ammonia can be found in the DOT
Emergency Response Guidebook under Number
125. The UN Number for anhydrous ammonia
is 1005 and is placarded Class 2.2,
Nonflammable gas.
Anhydrous ammonia corrodes brass valving
turning the brass to a blue/green color. When
inside inappropriate pressure cylinders (e.g.
propane cylinders), anhydrous ammonia attacks
brass valving from the inside out. In this situa-
tion, it is difficult to assess the integrity of valv-
ing from outside physical appearances.
Extreme caution should be used when handling
inappropriate containers storing anhydrous
ammonia. Brass valving that appeared to be
physically intact from outside appearance has
Chemical Emergency Preparedness and Prevention Office
Printed on recycled paper
-------
Page 4
Chemical Accident Prevention: Anhydrous Ammonia Theft
March 2000
been known to break off in the hands of respon-
ders creating an uncontrolled release from the
container. Also, these containers should not be
transported in the trunks of cars or other vehi-
cles where the container and the occupant are in
the same compartment.
Furthermore, responders should take care in
selecting the proper personal protective equip-
ment (PPE) level. Due to anhydrous ammonia's
low boiling point, affinity for water, and inhala-
tion hazard, responders can be injured if not
wearing proper PPE. Structural fire fighter pro-
tective clothing may not provide adequate pro-
tection during an anhydrous ammonia release.
The use of self-contained positive-pressure
breathing apparatus is appropriate during a
response to an anhydrous ammonia release. In
addition to other appropriate PPE, in some
cases it may be necessary to wear cryogenic
gloves with a moisture barrier to protect against
freezing and/or chemical bums.
HAZARD REDUCTION AND
PREVENTION
Here are some tips to deter anhydrous ammonia
theft:
•S Educate your employees about the theft
problem.
•S Store tanks in well-lit areas.
•S Know your inventory to quickly identify
missing chemicals.
•S Visually inspect tanks each morning, espe-
cially following weekends or other periods
where the facility is not occupied.
•S Consider auditing your facility and setting up
a valve protection plan for critical valves that
could cause significant releases if left open.
-S Consider installing valve locks or fencing,
especially for unattended tanks.*
•S Report thefts, signs of tampering, leaks, or
any unusual activity to local law enforcement
officials.
-S Consider installing other theft deterrent
measures such as motion detector lights,
motion detector alarms, security patrols,
and/or video surveillance.
* The ANSI Standard K61.1 states under section
6.7 "Protection of Container and
Appurtenances " that "main container shut-off
valves shall be kept closed and locked when the
installation is unattended. " Furthermore, it
states that "if the facility is protected against
tampering by fencing, or other suitable means,
valve locks are not required." Many states have
adopted the ANSI Standard K61.1 as law;
please check your state regulations or contact
your state agricultural department or fire mar-
shal for details. Also, OSHA 's requirement for
storage and handling of anhydrous ammonia
under §1910.111(c)(6) state that "valves, regu-
lating, gaging, and other appurtenances shall
be protected against tampering and physical
In addition to the general tips above, agricultur-
al dealers or retailers should consider removing
hoses during the off-season and storing them
separately from tanks. Also, farmers may con-
sider removing nurse tanks from fields when
they are no longer needed and returning used
tanks, applicators, or toolbars promptly to the
dealer after use. Finally, refrigeration facilities
may want to evaluate the benefits of installing
lockable, quarter-turn, spring-loaded, ball
valves in series with a manual valve in critical
areas such as at the system fill point or oil dis-
charge pot.
Special note on purchases:
Agricultural retail establishments should be aware
that they may be approached by individuals want-
ing to purchase ammonia for use in the illegal
production of methamphetamine. The following
list was developed by the Drug Enforcement
Administration (DBA) to help you identify indi-
viduals who may be seeking to purchase anhy-
drous ammonia for illegal purposes:
Chemical Emergency Preparedness and Prevention Office
Printed on recycled paper
-------
Page 5
Chemical Accident Prevention: Anhydrous Ammonia Theft
March 2000
4 Customer cannot answer or is evasive about
agricultural use questions.
4 Customer insists on taking possession rather
than having it delivered.
4 Customer insists on using cash, money
order or cashiers check.
4 Customer is a stranger and unfamiliar to
area or your business.
4 Customer provides suspicious business or
credit information.
4 Customer is vague or resists providing per-
sonal information
4 Customer intends to fill their own inappro-
priate tank (e.g. a 20-pound propane cylin-
der). Note: It is unlawful in some states to
sell anhydrous ammonia unless it is in an
approved product container.
If a customer fits any of these criteria, wait until
the person has left your business, write down an
accurate description of the person(s), vehicle,
license number and contact the DBA or local
law enforcement authorities immediately.
INFORMATION RESOURCES
EPA has prepared a general advisory on ammo-
nia and a safety alert on the "Hazards of
Ammonia Releases at Ammonia Refrigeration
Facilities." Both are available at:
www.epa.gov/ceppo
The Agricultural Retailers Association (ARA)
and The Fertilizer Institute (TFI) have a
brochure "Deter Theft of Anhydrous
Ammonia." www.tfi.org or (202) 675-8250;
www.aral.org or (202) 457-0825
The Agribusiness Association of Iowa has pre-
pared a fact sheet "Anhydrous Ammonia Theft,
What You Need To Know," available at:
www.exnet.iastate.edu/publications/
pg99015.pdf
The Hazardous Materials Emergency
Preparedness Grant Program has a publication
available "Guidelines for Public Sector
Hazardous Materials Training" - See Section 2,
Special Topics - Illicit Use of Hazardous
Materials: First Responder Training Issues.
www.fema.gov/emi/hmep
STATUTES AND REGULATIONS
The following is a list of federal statutes and
regulations related to process safety, accident
prevention, emergency planning, and release
reporting.
EPA
Clean Air Act (CAA)
• General Duty Clause [Section 112(r)(l) of
the Act] - Facilities handling extremely haz-
ardous chemicals (including anhydrous
ammonia) have a general duty to assess haz-
ards, design and maintain a safe facility, and
minimize the consequences of accidental
releases.
• Risk Management Program (RMP) Rule [40
CFR 68] - Facilities that have anhydrous
ammonia in quantities greater than 10,000
pounds are required to develop a hazard
assessment, a prevention program, an emer-
gency response program, and submit a risk
management plan to EPA.
Emergency Planning and Community Right-To-
Know Act (EPCRA)
- Emergency Planning [40 CFR Part 355] -
Facilities that have 500 pounds or more of
ammonia must report to their LEPC and
SERC and comply with certain requirements
for emergency planning.
• Emergency Release Notification [40 CFR
Part 355] - Facilities that release 100 pounds
or more of ammonia (other than the normal
application of a fertilizer) must immediately
report the release to the LEPC and to the
SERC.
• Hazardous Chemical Reporting [40 CFR Part
370] - Facilities that have ammonia at or
above 500 pounds must submit an MSDS to
their LEPC, SERC, and local fire
Chemical Emergency Preparedness and Prevention Office
Printed on recycled paper
-------
Page 6
Chemical Accident Prevention: Anhydrous Ammonia Theft
March 2000
department and comply with the Tier I/Tier
II inventory reporting requirements.
Comprehensive Environmental Response,
Compensation, and Liability Act (CERCLA)
• Hazardous Substance Release Reporting [40
CFR 302] - Facilities that release 100 pounds
or more of ammonia (other than the normal
application of a fertilizer) must immediately
report the release to the National Response
Center (NRC), (800) 424-8802.
DOT
• The Department of Transportation (DOT)
[49 CFR 100-180] - Research and Special
Projects Administration has requirements
covering the transportation of anhydrous
ammonia containers.
OSHA
- Process Safety Management (PSM) Standard
[29 CFR 1910.119] Anhydrous ammonia is
listed as a highly hazardous substance.
Facilities that have ammonia in quantities at
or above the threshold quantity of 10,000
pounds are subject to a number of require-
ments for management of hazards, including
performing a process hazards analysis and
maintaining mechanical integrity of equip-
ment. The PSM requirements do not apply
to retail facilities per 1910.119(a)(2).
• Hazard Communication [29 CFR 1920.120] -
Requires that the potential hazards of toxic
and hazardous chemicals be evaluated and
that employers transmit this information to
their employees.
• Storage and Handling of Anhydrous
Ammonia [29 CFR 1910.111] - Requires
standards for design, construction, location,
installation, and operation of anhydrous
ammonia systems.
CODES AND STANDARDS
There are a number of state codes and industry
standards that apply to safe handling, use, and
storage of anhydrous ammonia. A few exam-
ples are given below.
American National Standards Institutes (ANSI)
K61.1, 1999 - Standards for the Storage and
Handling of Anhydrous Ammonia
Available from ANSI
11 West 42nd Street
New York, NY 10036
(212) 642-4900
Web site: www.ansi.org
ANSI/IIAR 2-1992 - Equipment, Design, and
Installation of Ammonia Mechanical
Refrigeration Systems
Available from International Institute of
Ammonia Refrigeration (IIAR)
1200 19th Street, NW
Suite 300
Washington, DC 22036-2422
(202)857-1110
For More Information:
Contact the EPCRA Hotline at:
(800) 424-9346 or (703) 412-9810
TDD (800) 553-7672
Monday -Friday, 9 AM to 6 PM, EST
For information on OSHA standards contact
OSHA Public Information at (202) 219-8151
or visit the web site: www.osha.gov
Visit the CEPPO Home Page at:
www.epa.gov/ceppo/
Chemical Emergency Preparedness and Prevention Office
Printed on recycled paper
------- |