PROPOSITION 650F
1
CLEAR AND REASONABLE WARNINGS
QUESTIONS AND ANSWERS FOR BUSINESSES
Office of Environmental Health Hazard Assessment
California Environmental Protection Agency
Revised May 2019
Contents
Modified Article 6 Clear and Reasonable Warnings ....................................................................... 2
Subarticle 1. General .............................................................................................................................. 3
Responsibility to Provide Warnings ..................................................................................................... 4
Subarticle 2. Safe Harbor Methods and Content ............................................................................ 5
Consumer Product Exposure Warning Methods ............................................................................... 6
Consumer Product Exposure Warning Content ................................................................................ 8
Warning Symbol ................................................................................................................................. 8
Type Size ............................................................................................................................................. 8
Chemical Names ................................................................................................................................ 9
Short-Form Warnings ........................................................................................................................ 9
Warnings in Languages Other Than English ............................................................................... 11
Environmental Exposure Warning Methods ..................................................................................... 11
Occupational Exposure Warnings ..................................................................................................... 14
Specific Exposure Warnings ............................................................................................................... 14
1
The Safe Drinking Water and Toxic Enforcement Act of 1986, commonly known as Proposition 65,
codified at Health and Safety Code section 25249.5 et seq. Hereafter referred to as “Proposition 65” or
“the Act”.
CalEPA Office of Environmental Health Hazard Assessment 2
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Modified Article 6 Clear and Reasonable Warnings
This document was developed by the Office of Environmental Health Hazard
Assessment (OEHHA) to assist businesses in locating and understanding relevant
provisions in the Article 6 Clear and Reasonable Warnings regulations. For information
regarding Proposition 65 safe harbor consumer product exposure warnings provided on
the internet and in catalogs, see “Questions and Answers for Businesses: Internet and
Catalog Warnings”, which is also available on the Proposition 65 Warnings Website
(www.p65warnings.ca.gov). For general questions about Proposition 65, see
“Proposition 65 FAQs” on the OEHHA website, orFrequently Asked Questions” on the
Proposition 65 Warnings Website.
Q1: Has the Office of Environmental Health Hazard Assessment (OEHHA) issued
new regulations concerning the provision of warnings?
A1: Yes, the new regulations became effective on August 30, 2018 after a two-year
phase-in period. The older regulations have been repealed. See Title 27, California
Code of Regulations, section 25600, et seq.1F
2
Article 6, Subarticle 1 consists of
mandatory provisions including definitions of terms that are applicable to all warnings
provided under Proposition 65.
Article 6, Subarticle 2 provides non-mandatory, safe harbormethods and content for
giving clear and reasonable” warnings under Proposition 65.
Q2: I have determined that I need to provide a warning. How do I do so?
A2: Guidance for providing a clear and reasonable warning is available in OEHHA’s
warning regulations. Warnings can be given by a variety of methods depending on the
type of exposure (consumer product, environmental, or occupational).
Q3: What kind of testing does a business have to do in order to meet the safe
harbor warning requirements?
A3: The warnings regulations do not address the question of whether a warning is
required; rather, the regulations provide guidance on how to provide a warning once a
business has made a determination that a warning is required. OEHHA’s regulations do
not require a business to perform any testing.
To guide businesses in determining whether a warning is necessary, OEHHA has
developed over 300 regulatory safe harbor levels for Proposition 65 chemicals. A safe
2
All further references are to sections of Title 27, California Code of Regulations unless indicated
otherwise.
CalEPA Office of Environmental Health Hazard Assessment 3
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
harbor level identifies a level of exposure to a listed chemical that does not require a
Proposition 65 warning. A business is not required to provide a warning if it causes an
exposure to a chemical at or below these levels. These safe harbor levels consist of No
Significant Risk Levels for chemicals listed as causing cancer and Maximum Allowable
Dose Levels for chemicals listed as causing birth defects or other reproductive harm.
Subarticle 1. General
Q4: If I have to provide a warning, am I required to use the safe harbor warning
methods and content described in Article 6?
A4: No, the safe harbor warning methods and content in Article 6 are deemed by
OEHHA to be clear and reasonable, and provide a “safe harbor” against enforcement
actions for businesses that choose to use them. A business can choose to use other
warning methods and content; however, the business might have to defend the warning
in legal proceedings if it is challenged as not being clear and reasonable [Section
25600(f)].
Q5: Does a product manufactured before August 30, 2018 require a new
warning?
A5: A consumer product that is manufactured prior to August 30, 2018 and labeled with
a warning that is compliant with the September 2008 version of the regulations is
deemed to be compliant with the new regulations [Section 25600(b)]. In other words,
such a product does not require a new warning. The date the product is available for
purchase does not determine whether the product should have a new warning.
Q6: Does a product covered by a court-approved warning require a new
warning?
A6: Companies covered by a court-approved settlement can continue to use any
warning methods and content contained in that settlement [Section 25600(e)].
CalEPA Office of Environmental Health Hazard Assessment 4
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Q7: Can a company selling a product that is similar to one covered by a court-
approved warning use the court-approved warning instead of the safe harbor
warnings in the regulation?
A7: The regulations do not prohibit a business that is not a party to a settlement from
using warning methods and content incorporated into a settlement. However, if the
warning methods or content differ from those in the regulations, the business would not
be able to claim safe harbor protection. The business could still defend an enforcement
action by arguing such a warning is “clear and reasonable.”
Responsibility to Provide Warnings
Q8: Who should provide a warning for a consumer product?
A8: Consistent with the Act, OEHHA’s regulations place primary responsibility for
providing warnings on product manufacturers, producers, packagers, importers,
suppliers or distributors. For consumer product exposures, businesses in the above
categories must either provide a warning on the product label or labeling, or provide
notice and warning materials to “the authorized agent” for a retail seller and receive an
acknowledgment that the notice and materials were received [Section 25600.2(b)]. The
retail seller is responsible for placement and maintenance of the warning materials
he/she receives from the product manufacturer, producer, packager, importer, supplier
or distributor [Section 25600.2(d)]. Businesses should carefully review these
requirements.
Q9: If a company is a manufacturer or producer of a consumer product, but does
not sell it directly to retailers, how can it comply with the requirement to provide
warnings to retail sellers?
A9: A consumer product manufacturer that does not sell directly to retailers has two
options for compliance: (1) Provide a warning on the product label or labeling2F
3
, or (2)
Provide both a written notice that a warning is required and warning materials (such as
shelf signs) to the packager, importer, supplier or distributor via their authorized agent
[Section 25600.2(b)]. Manufacturers and others in the chain of commerce should take
appropriate actions to ensure that the warning is passed along to the retailer and
ultimately to the consumer [Final Statement of Reasons (FSOR), p. 39]. How that is
done will vary from situation to situation. A manufacturer or producer may choose to
enter into a contract with other businesses along the chain of commerce for their
3
Section 25600.2 sets the responsibilities to provide a warning under the Act, but does not in and of
itself provide a safe harbor. A business wishing to claim safe harbor protection must follow the method
and content requirements set forth in Article 6, Subarticle 2.
CalEPA Office of Environmental Health Hazard Assessment 5
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
product and/or the retailer to ensure that the warning is appropriately transmitted to the
retailer and end consumer [Section 25600.2(i)].
Q10: If a company manufactures component parts or ingredients that are sold in
bulk to other manufacturers or formulators, how can it comply with the
requirement to provide a warning, especially if the need for a warning depends on
the concentration or the manner of use of the listed chemical in the final product?
A10: A company that manufactures component parts or ingredients that include listed
chemicals can comply with the obligation to warn persons who can be occupationally
exposed to the bulk product by providing warnings consistent with Section 25606. The
company would only have responsibility for a consumer warning if it has knowledge that
the end use of the component part or ingredient can expose a consumer to a listed
chemical (See FSOR, p. 138). For example, if a manufacturer of a food ingredient
knows that the ingredient is typically used in certain types of prepared foods and could
thereby result in an exposure under the Act, then the ingredient manufacturer should
provide the warning or notice to the product manufacturer [Section 25600.2]. The
product manufacturer is then responsible for determining whether the product they are
manufacturing causes an exposure to the chemical at a level that requires a warning. If
so, the product manufacturer is responsible for passing the information along to its
customers or the product retailer [Section 25600.2]. In such a situation, the ingredient
manufacturer may also choose to work with the product manufacturer to evaluate
whether the product should have a warning and may enter into a contract with product
manufacturers to ensure that the warning is transmitted to the retailer and ultimately the
consumer [Section 25600.2(i)].
Subarticle 2. Safe Harbor Methods and Content
Q11: What are the type size requirements for safe harbor warnings?
A11: Type size requirements depend on the category of exposure covered by the safe
harbor warning. Consumer product exposure warnings must generally be prominently
displayed on a label, labeling, or sign, and must be displayed with such
conspicuousness as compared with other words, statements, designs or devices on the
label, labeling, or sign, as to render the warning likely to be seen, read and understood
by an ordinary individual under customary conditions of purchase or use [Section
25601(c)]. Some safe harbor warnings, such as short-form warnings for consumer
products [Section 25602], environmental exposure warnings [Sections 25604, 25605],
and several tailored warnings[Section 25607.1, et seq.], have specific minimum
type-size requirements. You should refer to the safe harbor methods and content
corresponding to the exposure category for which you are providing a warning to
determine if there are any applicable type size requirements.
CalEPA Office of Environmental Health Hazard Assessment 6
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Consumer Product Exposure Warning Methods
For additional information regarding safe harbor consumer product exposure warnings
provided on the internet and in catalogs, seeQuestions and Answers for Businesses:
Internet and Catalog Warnings, which is available on the Proposition 65 Warnings
Website.
Q12: What are the ways to provide safe harbor warnings for consumer product
exposures?
A12: The safe harbor methods and content for providing a consumer product exposure
warning can be found in Sections 25602 and 25603. Section 25602(a) describes four
safe harbor warning methods:
A product-specific warning provided on a posted sign, shelf tag, or shelf sign, at
each point of display of the consumer product.
A product-specific warning provided via any electronic device that automatically
provides the warning to the purchaser before purchase without requiring the
purchaser to seek out the warning.
A warning on the product label that complies with the content requirements in
Section 25603(a); namely, the warning symbol, the signal word, “WARNING:”,
and the applicable warning message.
A short-form warning on the product label that complies with the content
requirements in Section 25603(b); namely, the warning symbol, the signal word,
WARNING:”, and the applicable truncated warning message. The warning must
be in a type size no smaller than the largest type size used for other consumer
information on the product and in no case in a type size smaller than 6-point
type.
Q13: If a consumer product has exterior packaging, is a warning label required
on both the packaging and on the product itself?
A13: No, a “labelis defined as a display of written, printed or graphic material that is
printed on or affixed to a product or its immediate container or wrapper [Section
25600.1(i)]. The warning label should be placed in a manner to ensure that consumers
receive the warning prior to exposure. A warning must be visible on exterior packaging
that is opaque if an exposure requiring a warning can occur upon opening the package
[FSOR, p. 258]. A business may also choose to provide a warning on both the exterior
packaging and the product itself.
CalEPA Office of Environmental Health Hazard Assessment 7
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Q14: Can an owner’s manual be used for providing a safe harbor warning?
A14: No, a standalone warning in an owner’s manual is not a safe harbor warning
method for consumer product exposures [FSOR, p. 74]. For some products (specifically
diesel engines, passenger vehicles and recreational vessels), owner’s manuals are
included as part of a safe harbor warning method used in conjunction with another
warning method [Sections 25607.14, 25607.16, and 25607.18].
Q15: Can a sign combine two different safe harbor warnings?
A15: It is possible to provide two or more warnings on a single sign. However, the
entire applicable warning content for the type of exposure is required for safe harbor
warnings in Subarticle 2. Combining the content of multiple warnings into one warning
message would generally not comply with the safe harbor requirements. For example,
if a vehicle repair facility allowed smoking at its facility such that warnings were required
both for the environmental exposure to petroleum products and tobacco smoke, the
required warning elements for each situation must be included for the safe harbor. A
combined sign would need to be 8 ½ by 11 inches in dimension (designated smoking
area requirement), posted at each public entry of the repair facility as well as within the
area in which smoking occurred, printed in no smaller than 32-point type (repair facility
requirement) with the messages enclosed in boxes to satisfy the safe harbor
requirements. [Sections 25607.26, 25607.27, 25607.28, and 25607.29] A simpler
method would be to provide separate warnings using the applicable methods and
content.
Q16: Can a business provide a general Proposition 65 warning at each public
entrance to a store instead of providing warnings for specific consumer
products?
A16: No, the safe harbor consumer product exposure warning methods are described
in Section 25602, subsections (a)(1)-(4). The safe harbor warning methods in
Subarticle 2 do not include a standalone warning at public entrances purporting to cover
all possible consumer product exposures. Such a warning would not meet the
requirements for safe harbor warnings under the regulations. Safe harbor warnings
must be clearly associated with the product that is the subject of the warning and
comply with the other requirements in Subarticle 2.
CalEPA Office of Environmental Health Hazard Assessment 8
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Consumer Product Exposure Warning Content
Warning Symbol
Q17: Which American National Standards Institute (ANSI) International
Organization for Standardization (ISO) number is required for the yellow warning
symbol?
A17: The Article 6 regulations did not adopt any ANSI standards for warning symbols,
and there is no requirement that the warning symbol color correspond to a specific ISO
number. The regulations only require that the warning symbol be “yellow.” OEHHA
provides sample compliant warning symbols that a business may download and use.
Q18: If a business does not have the ability to print in color, can the business
print the warning symbol in black and white?
A18: Yes, if a business does not use the color yellow for other information printed on
the label or sign, the business may print the warning symbol in black and white [Section
25603(a)].
Type Size
Q19: What is the minimum type size for consumer product exposure warnings?
A19: For a consumer product exposure safe harbor warning provided on a label
pursuant to Section 25602(a)(3), there is no specific type size requirement. Section
25601(c), however, requires that safe harbor consumer product exposure warnings on a
label be prominently displayed with such conspicuousness as compared with other
words, statements, designs or devices on the label, labeling, or sign, as to render the
warning likely to be seen, read, and understood by an ordinary individual under
customary conditions of purchase or use.
A “short-formwarning may be provided on a product label in accordance with Section
25602(a)(4). This section requires that the entire warning be in a type size no smaller
than the largest type size used for other “consumer information” on the product, and in
any case the warning must not be in a type size smaller than 6-point type. “Consumer
information” is defined in Section 25600.1(c), and includes warnings, directions for use,
ingredient lists, and nutritional information, but does not include the brand name,
product name, company name, location of manufacture, or product advertising.
CalEPA Office of Environmental Health Hazard Assessment 9
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Chemical Names
Q20: Section 25601(b) requires a safe harbor warning to identifyone or moreof
the chemicals for which the warning is being provided. What if a business
determines that there are five listed chemicals requiring a Proposition 65
warning? Do all five chemicals need to be named in the warning?
A20: No, if a business chooses to follow the safe harbor methods and content in
Section 25601(b), the business must include the name of one or more chemicals for
which it is providing a warning. Additionally, where a business is providing a warning for
both cancer and reproductive toxicity, the warning must include the name of one or
more chemicals for each endpoint.
If, for example, there are five possible chemical exposures from a given product, and all
five chemicals are listed only as carcinogens, then the business would only be required
to name one of those five chemicals in the warning. However, the business may
choose to identify any or all of the remaining four chemicals. If there are exposures to
both carcinogens and reproductive toxicants, a business would be required to name one
of the chemicals that is a carcinogen and one of the chemicals that is a reproductive
toxicant, but the business could choose to identify more chemicals in the warning. If the
warning covers exposure to a chemical that is listed as both a carcinogen and a
reproductive toxicant, the warning would only need to name that one chemical, however
both endpoints would need to be included in the warning [FSOR, p. 199].
Q21: Is it acceptable to use chemical acronyms in a warning? As an example, if
a product requires a warning for "diethylhexyl phthalate," is it acceptable to
identifyDEHPinstead of the full chemical name in the warning?
A21: The chemical name as it appears on the Proposition 65 list needs to be included
in the warning [FSOR, p. 71]. If the abbreviation is included as part of the full chemical
name in a warning, the abbreviation alone can be used for subsequent references to the
chemical name.
Short-Form Warnings
Q22: When can a business use a short-form warning?
A22: Section 25603, subsections (a) and (b) provide options for safe harbor warning
content for consumer products. Subsection (a) is the standard warning content, while
subsection (b) allows a business to use the truncated short-form warning content on a
product label. The short-form warning was intended for small products where the longer
warning will not fit on the label [FSOR, p.72]. Currently, a business may use either the
standard or short-form warning content on a labelfor a consumer product exposure
[Sections 25602, subsections (a)(3)&(4)]. The short-form warning is not a warning
method applicable to a sign” [Section 25602(a)(1)].
CalEPA Office of Environmental Health Hazard Assessment 10
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Q23: Can a business provide a short-form warning instead of a specific product,
chemical or area exposure warning (“tailored warning”)?
A23: No, if there is a tailored warning for that exposure in Subarticle 2, a business
cannot use the short-form warning and still claim the safe harbor unless the tailored
warning expressly allows the use of the short-form warning [Section 25607(a)].
Q24: Can a short-form warning be placed on the packaging or does it have to be
on the product itself?
A24: The short-form warning can be affixed to or printed on a product “label”, which
includes its immediate container or wrapper [Section 25600.1(i)].
Q25: Can a short-form warning label be used on any size product?
A25: OEHHA’s intent in providing the short-form warning option was to provide an
alternative to be used on small products or where space was limited. There is currently
no limitation on using the short-form warning on larger products. However, consumer
product exposure warnings must be prominently displayed on a label and must be
displayed with such conspicuousness as compared to other words, statements,
designs, or devices on the label as to render the warning likely to be seen, read, and
understood by an ordinary individual under customary conditions of purchase or use
[Section 25601(c)]. The short-form warning must be in a type size no smaller than the
largest type size used for other consumer information on the product and in no case
smaller than 6-point type [Section 25602(a)(4)].
OEHHA may request additional information concerning a warning from businesses
under Section 25205. This requested information includes the name(s) of the chemicals
for which the warning is being provided, and the routes and levels of exposure. OEHHA
may request this information, to provide to the public as appropriate on the warnings
website. OEHHA has requested such information from some businesses using short-
form warnings, and in other situations where OEHHA wants to understand why
consumer product exposure warnings are being provided. OEHHA is monitoring use of
this warning method to determine if the regulation should be amended.
Q26: Is information required by other agencies such as warning messages, and
nutritional information (calories, serving size, etc.) considered “consumer
information”? Does that include the headings for those items?
A26: Yes, information such as warnings and nutritional information, including headings,
are “consumer information” for purposes of the minimum type size required for a short-
form warning [Section 25600.1(c)].
Q27: If the space on a product label is too small and the short-form warning
cannot be placed in one line, can the short-form warning be placed in two/three
lines?
CalEPA Office of Environmental Health Hazard Assessment 11
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
A27: Yes, short-form warnings need not be provided on a single line. However, other
requirements, such as the location of the warning symbol to the left of the warning
message, height of the signal word, and the minimum type size must be followed if the
business wishes to claim safe harbor protection.
Q28: If a business provides a short-form warning on the consumer product, can
the same warning be provided on a website?
A28: Yes, pursuant to Section 25602(b) a business can use the same short-form
warning content used on the product for a website warning. The business may also use
a picture of the product label showing the warning for the website warning.
Warnings in Languages Other Than English
Q29: When are warnings required to be provided in languages other than
English?
A29: Safe harbor consumer product warnings [Section 25602], environmental warnings
[Section 25604], and tailored warnings [Section 25607.1, et seq.] require warning
content to be provided in other languages under certain circumstances. As an example,
if a consumer product sign or label used to provide a warning includes consumer
information about a product in a language other than English, then the warning must be
provided in that language in addition to English [Section 25602(d)]. Similarly, if signage
at a business or facility is provided in a language other than English, then an
environmental warning must be provided in that language in addition to English [Section
25604(a)].
Q30: How can I access warning content in different languages Spanish,
Chinese, French, etc.?
A30: OEHHA provides warnings translations for businesses on the Proposition 65
Warnings Website, including translations in Spanish, Cambodian, Chinese (traditional
and simplified), French, Hmong, Korean, Tagalog and Vietnamese.
Q31: Is a product name considered “consumer information”?
A31: No, a product name is not considered “consumer information” for purposes of
determining whether a warning needs to be provided in a language other than English.
“Consumer information” includes warnings, directions for use, ingredient lists, and
nutritional information; it does not include the brand name, product name, company
name, location of manufacture, or product advertising [Section 25600.1(c)].
Environmental Exposure Warning Methods
Q32: If a business has determined that occupational exposure warnings are
required for an exposure to a listed chemical, and is providing Proposition 65
CalEPA Office of Environmental Health Hazard Assessment 12
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
occupational warnings that are compliant with the Article 6 safe harbor methods
and content, does a business also need to provide warnings to visitors for
exposures to listed chemicals at the facility?
A32: In general, a business should consider the exposures to listed chemicals that it
knows about, and determine if each exposure requires a warning [FSOR, p. 165] If a
business has determined that an employee may be exposed to a listed chemical at his
or her place of business at a level that requires a warning, and that a visitor to the
facility can be also exposed to a listed chemical at a level that requires a warning, then
Proposition 65 warnings should be provided for these exposures. The business should
carefully consider the appropriate placement of warnings in the context of the
regulations. The methods and content for providing safe harbor environmental and
occupational exposure warnings are located in Sections 25604, 25605, and 25606.
Q33: The “environmental exposure” definition states all exposures that are not
consumer product or occupational exposures are environmental exposures. It is
not clear what type of warning is required when there are combinations of
exposures. Are multiple types of warnings required when multiple types of
exposures are occurring?
A33: In some circumstances warnings will need to be provided that do not fit neatly into
a single category. In that case, more than one warning may need to be provided for
environmental exposures to listed chemicals. For example, the regulations for
amusement parks require a warning to be posted at each public entrance, but also
require warnings to be provided separately for consumer products, alcoholic beverages,
food, and enclosed parking facilities where such exposures occur on the premises in
order for the amusement park to receive safe harbor protection [Section 25607.22(d)].
Q34: The regulations state that environmental warnings provided on a sign need
to be in 72 point type. Does that requirement only apply to the word
“WARNING”?
A34: No, the regulations require the entire warning to be in 72-point type.
Q35: The regulations for environmental exposures require the warning to include
a map [Section 25604(a)(2)(B)]. Does that mean a floor plan of the property or a
map of the area showing the location?
A35: The “map required by these regulations should clearly identify the affected area
as opposed to the surrounding unaffected areas. A map of an area where exposures
requiring a warning can occur (such as a community adjacent to an industrial facility that
is causing the exposures) should include landmarks such as street names, rivers, or
other identifying features to allow people to readily recognize the area indicated. In
some situations, such as a facility where exposures requiring a warning can occur on
the facility’s premises, a written description of the source of exposure, a floor plan
CalEPA Office of Environmental Health Hazard Assessment 13
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
delineating the affected area(s), or other graphic may be more clear (See FSOR,
p.122).
Environmental Exposure Warning Content
Q36: How specific must the description of the source of exposure be in an
environmental warning? Must a specific area be described for each source of
exposure or for each chemical present, or only for the chemical listed in the
warning?
A36: The specific area where the exposure can occur must be described in the warning
for the chemical or chemicals that are named in the warning. Examples of how a
warning can identify the source of the exposure and be provided in a manner that
clearly associates it with the exposure can be found in the tailored warning section of
the regulation (see Sections 25607.20 and 25607.21 (enclosed parking facilities),
Sections 25607.24 and 25607.25 (petroleum products), Sections 25607.26 and
25607.27 (service stations and repair facilities), and Sections 25607.28 and 25607.29
(designated smoking areas)).
Where a warning is being provided for multiple chemicals and/or multiple exposures, the
warning should describe the area in which an exposure to those chemicals can occur
[FSOR, p. 130]. It may be appropriate in some circumstances to provide warnings in
more than one location in a facility so that the warning will be clearly associated with the
source(s) of exposure. For example, posting a sign at the entry of a facility that purports
to provide a warning for an exposure that is only likely to occur in one area of the
facility, such as in an art studio on the third floor of a building, would not be sufficiently
associated with the source of the exposure. Such a warning should be posted at
entrances to that area of the third floor. On the other hand, if a particular chemical
exposure can occur throughout a facility, for example exposures to a solvent from paint
used throughout a large freestanding art studio, a warning at the studio entrance
naming the chemical and the source (paint) may be appropriate.
Environmental exposure warnings must be provided in a conspicuous manner and
under conditions that make the warning likely to be seen, read, and understood by an
individual in the course of normal daily activity [Section 25601(d)]. The warning should
be provided close enough to the source of exposure for the person seeing the warning
to determine where and how they may be exposed [FSOR, p. 120].
Warnings are not required for the mere “presence” of listed chemicals. The business
should determine if there is likely to be an exposure to a listed chemical at a level that
requires a warning.
CalEPA Office of Environmental Health Hazard Assessment 14
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
Occupational Exposure Warnings
Q37: Are professional or industrial use-only products covered by this
regulation?
A37: If a business has determined that the only exposures to a listed chemical that
require a warning will be occupational, then the business can follow the safe harbor
occupational exposure warning methods and content described in Section 25606. The
term “occupational exposure” is defined in Section 25600.1(k) as an exposure to any
employee at his or her place of employment”.
Q38: Section 25606(a) states that a warning is not required on products that meet
the requirements of the Hazard Communication Standard (HCS). If a product
contains a Proposition 65 chemical, but the quantity is not enough to trigger
classification as a carcinogen or reproductive toxicant under the HCS, does it still
require a Proposition 65 warning?
A38: Proposition 65 imposes separate warning requirements from the HCS. Section
25606 provides that a business can comply with Proposition 65 by complying with state
and federal occupational training and warning requirements when a warning is required
under the federal or California HCS, or the California Pesticides and Worker Safety
requirements. In the event that there is an occupational exposure to a Proposition 65
listed chemical with no warning requirement for the chemical under these laws, a
Proposition 65 warning may still be required [FSOR, p. 29]. Section 25606(b) provides
businesses the option to use safe harbor warning methods and content for an exposure
to a Proposition 65 listed chemical in an occupational setting.
Q39: Can a business place the Proposition 65 warning on a Safety Data Sheet
(SDS)?
A39: Safety Data Sheets (SDS) are outside the scope of this regulation, as OEHHA
cannot prescribe the content of forms under the authority of a federal or other state
agency. While the SDS may in some circumstances be used to provide occupational
exposure warnings, they are not a safe harbor warning method for other exposure types
such as consumer product or environmental exposures.
Specific Exposure Warnings
Q40: There is a specific exposure warning (“tailored warning”) for my product in
the new regulations. Does that mean a warning is now required?
A40: The fact that there is a tailored warning for a particular product (or place) does not
mean that a warning is always required. A warning is required only when there is an
exposure to a listed chemical from the product that is above the safe harbor level for
that chemical. As stated in Section 25600(a), the Article 6 regulations do not determine
CalEPA Office of Environmental Health Hazard Assessment 15
Proposition 65 Clear and Reasonable Warnings
Questions and Answers for Businesses Revised May 2019
whether a warning is required. The business should make the determination of whether
a warning is required for a specific exposure, and if so, use the regulations to determine
how to provide the warning.
Q41: Can I use a point-of-sale warning for exposures to Bisphenol A (BPA) in
canned and bottled foods and beverages as a safe harbor warning?”
A41: No, the point-of-sale warning option for exposures to BPA in canned and bottled
foods and beverages was a temporary regulation that expired on December 30, 2017
and has been repealed. It is no longer a safe harbor option for businesses. Businesses
should refer to the more general provisions of Article 6, Subarticle 2 for the current
regulations concerning safe harbor warning methods and content for consumer product
exposures from foods.