&EPA
The mission of the U.S.
Environmental Protection
Agency (EPA) is to protect
human health and safe-
guard the environment.
One way EPA helps fulfill
its mission is by regulat-
ing the management and
disposal of hazardous
wastes under the
Resource Conservation
and Recovery Act (RCRA).
RCRA has the following
three general goals: To
protect human health and
the environment • Jo
reduce waste while con-
serving energy and natur-
al resources • To reduce
or eliminate the genera-
tion of hazardous waste.
United States
Environmental Protection
Agency
Solid Waste
and Emergency Response
(5306W)
EPA530-E-00-001d
October 2000
www.epa.gov/osw
Safe Hazardous Waste
Recycling
azardous waste recycling activities include combustion for energy recovery,
use constituting disposal, reclamation, and direct use and reuse. EPA also
regulates the recycling of the following hazardous materials: used oil, pre-
cious metals, and scrap metal.
Recycling hazardous waste fulfills two of
RCRA's goals by reducing the consump-
tion of raw materials and energy and by
reducing the volume of waste materials
that must be treated and disposed of.
There are many benefits of recycling;
however, it must be conducted in a way
that ensures the protection of human
health and the environment.
During the development of RCRA, EPA
looked at recycling practices throughout
the United States and determined that
certain practices would pose a threat to
human health and the environment if
they were not properly conducted.
Hazardous waste recycling frequently
requires the accumulation of large quanti-
ties of hazardous waste prior to process-
ing. Improper storage of those materials
might cause spills, leaks, fires, and cont-
amination of soil and drinking water.
To encourage hazardous waste recycling
while protecting health and the environ-
ment, EPA developed regulations to
ensure recycling would be performed in
a safe manner.
EPA varies the degree to which a recy-
clable material or recycling activity is regu-
lated under RCRA based on the threat it
poses to human health and the environ-
ment. Recycling activities that pose a sig-
nificant threat are subject to the same
strict regulations as hazardous waste
treatment, storage, or disposal. Other haz-
ardous waste recycling activities that
resemble production processes, with
checks and balances that ensure safe
management, are subject to less strin-
gent regulations. In addition, a hazardous
material destined for recycling must be
identified by type and recycling process in
order to determine its level of regulation.
In other cases, EPA has set special stan-
dards for commonly recycled hazardous
materials to reduce the regulatory burden
on handlers and to encourage recycling.
Printed on paper that contains at least 30 percent postconsumer fiber.
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Through other resource conservation initiatives, EPA
encourages handlers of hazardous waste to adopt prac-
tices and choose materials that will reduce the amount of
waste generated, thus preventing pollution at its source.
In each case, the public derives significant benefits from
EPA's safe hazardous waste recycling regulations.
Combustion for Energy Recovery
Combustion for energy recovery involves burning the haz-
ardous waste directly as a fuel or using it as an ingredient
to produce a fuel. Used solvents, for example, are fre-
quently burned to produce heat or generate electricity.
Because of the potential for release of harmful con-
stituents from burning these wastes, EPA regulates this
recycling activity as strictly as any other type of hazardous
waste combustion. EPA requires combustion units that
burn hazardous waste for energy recovery to obtain a per-
mit and meet certain performance and operating stan-
dards under the boiler and industrial furnace regulations.
Use Constituting Disposal
Use constituting disposal involves applying a hazardous
waste directly to the land or incorporating it into a product
that will be applied to the land. Examples include using
hazardous waste as fertilizer or as an ingredient in
asphalt. EPA strictly regulates land disposal of hazardous
waste, due to the potential for soil and ground-water conta-
mination. Recycling a hazardous waste in a manner that
constitutes disposal (land application) presents similar
risks. The harmful constituents in hazardous wastes must
be treated to reduce their toxicity and ability to leach into
soil and ground water before the wastes are applied to the
land. When a hazardous waste is used as an ingredient in
a product, EPA will evaluate its use to ensure that it serves
a legitimate purpose in the function of the product. If it
does not, EPA considers this practice "sham" recycling;
placing such a product on the land would be illegal.
Reclamation
Reclamation is processing a material to recover a use-
able product, such as recovering mercury from broken
thermometers, or regenerating a material, such as clean-
ing used solvents to make them pure again. Reclamation
activities are regulated differently depending on the type
of hazardous waste to be recycled. Certain reclaimed
materials enjoy "relief" from all hazardous waste regula-
tions. Other materials, however, are subject to full regula-
tion when reclaimed. EPA made this distinction based on
the level of threat posed by common industry practices
associated with reclaiming different types of materials.
Other Resource Conservation
Initiatives
In addition to the special standards mentioned above,
EPA implements two other resource conservation initia-
tives: universal waste rules and waste minimization.
These intiatives also accomplish the goals of RCRA by
striking a balance between protecting human health and
the environment and encouraging recycling.
Universal Waste
Universal wastes include batteries, mercury thermostats,
and certain pesticides. EPA regulates these wastes by using
less stringent standards than other hazardous wastes to
encourage recycling. Because the Agency found that large
and diverse communities generate universal wastes that
might be present in large quantities in the nonhazardous
waste stream, EPA developed ways to encourage recycling.
EPA found that the hazardous waste regulations, as they
are normally applied, discouraged collection, recycling,
and proper management of universal wastes. To facilitate
these activities, EPA streamlined the regulations that
apply to universal waste handlers and transporters.
Universal waste handlers, for example, can accumulate
universal waste for up to 1 year, while hazardous waste
generators can only accumulate waste for a fraction of
that time. This extended period allows a universal waste
handler to accumulate enough batteries, for example, to
make recycling an economically viable option. Many recy-
cling operations require large quantities of wastes to
operate economically. Universal waste transporters can
transport without a manifest or EPA identification number,
while hazardous waste transporters must have both. EPA
fully regulates universal waste destination facilities (i.e.,
where the waste is ultimately disposed of or recycled) in
the same way hazardous waste treatment, storage, or
disposal facilities are regulated, because the risks of
recycling or disposing of universal wastes are similar to
other hazardous waste management activities.
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Direct Use and Reuse
The final type of hazardous waste recycling activity is
using a waste directly (without reclamation) as an ingre-
dient in an industrial process to make a product or
using a waste directly as a substitute for a product.
Under this activity, a facility will use a hazardous waste
directly in place of a product, if the waste is similar
enough to function in a similar manner. Since direct
reuse of the material presents a low risk to human
health and the environment, EPA does not regulate
these activities, unless the waste will be burned or
placed on the land. EPA will evaluate the legitimacy of a
recycling practice by ensuring that it is not an attempt
to avoid proper treatment or disposal and that the
material is recycled in a timely manner.
Special Standards
To encourage recycling of certain common hazardous
wastes, such as used oil, precious metal-bearing waste,
and scrap metal, EPA developed different standards for
their recycling and management. EPA regulates those
materials differently because industry standards already
encourage careful management. In addition, some of
these materials have considerable value and there is an
economic incentive to manage them safely. These special
standards reduce the regulatory burden on recyclers while
ensuring safe recycling. The public benefits from reducing
materials that are disposed of and the amount of raw
materials and energy required to produce new materials.
Used Oil
Used oil is crude or synthetic-based oil that has been
used and includes impurities or contaminants such as
dirt, metal scrapings, water, or chemicals. The most
common example is used motor oil from automobile
engines, but the term also includes industrial oils such
as metal working fluids, hydraulic fluids, and oil from
refrigerator compressors. Used oil is easily recycled;
about 380 million gallons are recycled annually.
Recyclers can re-refine used oil and return it to its origi-
nal purpose, process it to create different products, or
burn it for energy recovery.
To encourage used oil recycling, EPA developed less strin-
gent standards for used oil handlers than for hazardous
waste handlers. Used oil generators can store any quantity
of used oil indefinitely and need only ensure that it is
stored in tanks or containers that are in good condition.
Waste Minimization
While EPA encourages safe recycling practices, its ulti-
mate goal is to promote the minimization of waste
before it is generated. EPA encourages generators of
hazardous waste to choose materials and practices that
will reduce the volume and toxicity of their waste
streams. Waste minimization is not just about reducing
total waste quantities, but rather about reducing the
amount of chemicals in wastes, particularly those chemi-
cals that pose the greatest environmental concern.
To ensure that hazardous waste generators practice
waste minimization, they must certify, with every ship-
ment of hazardous waste they send for treatment or dis-
posal, that they have a program in place to ensure
waste reduction. Those facilities that treat, store, and
dispose of hazardous wastes also are required to regu-
larly certify they have a waste minimization program.
Here are some general examples of how a facility that gener-
ates hazardous waste can accomplish waste minimization:
Waste Minimization Case Study
A military equipment manufacturer used 8,250
gallons of a hazardous solvent each year. By substi-
tuting a nonhazardous solvent for the hazardous
solvent, it saved more than $100,000 in disposal,
purchasing, and regulatory compliance costs in less
than 10 years.
Set explicit goals for reducing the volume and toxicity
of waste.
Conduct periodic waste minimization assessments.
Substitute nonhazardous raw materials for hazardous
ones.
Redesign equipment to produce less waste.
Install systems that reuse waste materials directly in
the process.
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Used oil transporters do not need to carry a shipping
manifest, which EPA requires hazardous waste trans-
porters to carry. Used oil processors and re-refiners do
not need permits to operate, while hazardous waste
treatment, storage, and disposal facilities do. Used oil
burners are regulated only if the quantity of harmful con-
stituents in the used oil is above specifications.
To address the risks to human health and the environ-
ment associated with used oil recycling, EPA set mini-
mum good housekeeping standards to ensure safe
recycling. EPA requires that used oil be stored in tanks
and containers that prevent releases to soil and ground
water. EPA requires used oil transporters, marketers,
processors, and re-refiners to keep records of the quan-
tity, origin, destination, and date of shipment or accep-
tance of any shipment of used oil, to ensure that the oil
is actually recycled. And, finally, EPA set standards for
the cleanup of releases during storage and transit.
Precious Metals
Hazardous wastes can contain significant amounts of
precious metals such as gold, silver, platinum, palla-
dium, iridium, osmium, rhodium, and ruthenium. The
precious metal components of such wastes can be
reclaimed. One example is photographic fixer, which
contains silver. Since precious metals are valuable
commodities, businesses usually handle them very
carefully. EPA standards for handling precious metal
waste that will be recycled are significantly less strin-
gent than for other hazardous wastes.
Scrap Metal
Scrap metal is bits and pieces of metal parts or
metal pieces that can be recycled, such as auto bod-
ies, used wire, and metal pieces from manufacturing
and assembly operations. Scrap metal does not
include materials generated from smelting and metal
refining operations or materials that contain a signifi-
cant liquid component. Reclaimed scrap metal is
exempt from all hazardous waste regulations. EPA
determined this activity does not pose a threat simi-
lar to other types of waste management.
Would You Like More Information?
RCRA, Superfund, and EPCRA Hotline
Call 800 424-9346 or 703 412-9810 in the
Washington, DC area. For the hearing impaired, the
number is TDD 800 553-7672. You also can
access information via the hotline's Internet site at
.
Additional Documents
These additional documents can help you learn
more about the requirements for hazardous waste
recycling. These documents are free and can be
ordered from the RCRA Hotline. Reference the EPA
document number (EPA530...) when ordering.
Environmental Fact Sheet: Final Streamlined
Regulations for Collecting and Managing Universal
Wastes, (EPA530-F-95-011).
Managing Used Oil: Advice for Small Businesses,
(EPA530-F-96-004).
Waste Minimization National Plan: Reducing Toxics in
Our Nation's Waste, (EPA530-F-97-028).
RCRA Orientation Manual: 1998 Edition,
(EPA530-R-98-004).
Contact Your State
Although EPA regu-
lations set the
national standard
for compliance,
states often have
more stringent reg-
ulations. Contact
your state about
specific regula-
tions. State envi-
ronmental contacts
are available from
the hotline.
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