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Emergency Planning and Community Right-to-Know Act: Section 313,
What is meant by the terms “manufacture,” 
“process,”or “otherwise use”?
• Manufacture – means to produce, prepare, import, or compound one of the 
EPCRA section 313 chemicals on the list. For example, if you make a dye for 
clothing by taking raw materials and reacting them, you are manufacturing the 
dye. You would also be covered if you were a textile manufacturer who imported a 
dye on the list for purposes of applying it to fabric produced at your plant.
• Process – means the incorporation of an EPCRA section 313 chemical into 
a product for further distribution into commerce. This definition includes 
making mixtures, repackaging, or using a chemical as a feed-stock, raw material, 
or starting material for making another chemical. Examples of processing 
include:
– Adding a solvent as a dilutant when making a paint, coating, or other mixture;
– Using a chemical as a reactant in the manufacture of a pesticide (e.g., using 
chemical A to make chemical B).
• Otherwise Use – applies to any use of an EPCRA section 313 chemical at 
a covered facility that is not covered by the terms “manufacture” or “process” 
and includes use of an EPCRA section 313 chemical contained in a mixture or 
trade name product. An EPCRA section 313 chemical that is otherwise used by a 
facility typically is not intentionally incorporated into a product distributed 
in commerce. The otherwise use definition also includes EPCRA section 313 
chemicals disposed, stabilized, or treated for destruction if the facility that 
conducted these activities received the EPCRA section 313 chemical from off-site 
for purposes of waste management. 
Examples include:
– Using a metal cutting fluid that contains diethanolamine;
– Using a heat transfer fluid containing biphenyl;
– Using trichloroethylene to degrease tools; 7
– Using chlorine in waste water treatment;
– Using Freon 113 as a refrigerant to cool process streams;
– Stabilizing boiler ash that contains nickel compounds received from another 
facility. 
Section 313 requires suppliers of mixtures and trade name products to notify 
customers of the presence of EPCRA section 313 chemicals in their products above 
certain de minimis concentrations (these cutoffs are discussed under 
“Exemptions”). This supplier notification requirement has been in effect since 
January 1, 1989.
PERSISTENT, BIOACCUMULATIVE AND TOXIC CHEMICALS (with lower thresholds)
Chemical Name or Chemical Category Name
Aldrin
Benzo(g,h,i)perylene*
Chlordane
Dioxin and dioxin-like
compounds*
Heptachlor
Hexachlorobenzene
Isodrin
Mercury
Mercury compounds
Methoxychlor
Octachlorostyrene*
Pendimethalin
Pentachlorobenzene*
Polycyclic aromatic
compounds*=
Polychlorinated biphenyl
PCBs)
Tetrabromobisphenol A
TBBPA)*
Toxaphene
Trifluralin
EXEMPTIONS
Under certain circumstances, some or all of the 
reporting requirements under EPCRA Section 313 may not apply to an EPCRA Section 
313 chemical at a facility. The following are the major exemptions:
• De minimis. The de minimis exemption allows facilities to disregard 
certain minimal concentrations of non-PBT chemicals in mixtures or other trade 
name products they process or otherwise use when making threshold determinations 
and release and other waste management calculations. In determining whether the 
amount of an EPCRA section 313 chemical used at your facility exceeds the 
reporting threshold listed on page 4, in certain cases you are not required to 
count the amount of EPCRA section 313 chemical present in a mixture if its 
concentration is less than 1 percent of the mixture, or its concentration is 
less than 0.1 percent of the mixture when the chemical is defined by the 
Occupational Safety and Health Administration (OSHA) as carcinogenic. The de 
minimis exemption does not apply to PBT chemicals. The chemical list beginning 
on page 20 identifies the de minimis levels for the non-PBT chemicals.
• Articles. In considering whether a reporting threshold has been 
exceeded, you are not required to count toxic chemicals present in articles 
processed or used at your facility. An “article” is a manufactured item which:
(1) is formed to a specific shape or design during manufacture;
(2) has end use functions dependent in whole or in part upon its shape or design 
during end use; and 
(3) does not release an EPCRA section 313 chemical under normal conditions of 
processing or use of that item at the facility or establishments.
• Specified Uses. In considering whether a reporting threshold has been 
exceeded, you are not required to count EPCRA section 313 chemicals that are 
used at your facility for any of the following purposes:
As a structural component of the facility;
In routine janitorial or facility grounds maintenance;
In foods, drugs, cosmetics, or other items for personal use, including 
supplies of such items;
In motor vehicle maintenance (including motor fuel); or
In process water and non-contact cooling water as drawn from the environment 
or from municipal sources, or in air used either as compressed air or as part of 
combustion.
• Laboratory Activities. In considering whether a reporting threshold has 
been exceeded, you are not required to count EPCRA section 313 chemicals that 
are manufactured, processed, or otherwise used for research or quality control 
in a laboratory at a covered facility under the supervision of a technically 
qualified individual. This exemption does not apply to production, processing, 
or the use of EPCRA section 313 chemicals in laboratories for distribution in 
commerce or in pilot plant scale operations.
• Owners of Leased Property. The owner of a covered facility is not subject to 
reporting under Section 313 if the owner’s only interest in the facility is 
ownership of the real estate upon which the facility is operated. However, the 
operator of the facility must report if the reporting criteria are met.