Wisconsin Code § 299.48

Fire fighting foam containing PFAS
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(1) DEFINITIONS. In this section:
(a) “Class B fire fighting foam” means a foam designed for
use on a flammable liquid fire, and may include a dual action
Class A and B foam.
(b) “PFAS” means a perfluoroalkyl or polyfluoroalkyl
substance.
(c) “Testing” includes testing of a fire fighting foam to evaluate its effectiveness and testing of a fire fighting foam delivery
system or equipment.
(d) “Training” means providing first-hand field experience to
a person who may use a fire fighting foam as part of an emergency fire fighting or fire prevention operation.
(2) PROHIBITION. Except as provided under sub. (3), no person may use or otherwise discharge, including for training purposes, a class B fire fighting foam that contains intentionally
added PFAS.
(3) EXEMPTIONS. The prohibition under sub. (2) does not apply to any of the following:
(a) The use or discharge of a class B fire fighting foam that
contains intentionally added PFAS as part of an emergency fire
fighting or fire prevention operation.
(b) The use of class B fire fighting foam that contains intentionally added PFAS for testing purposes, including calibration
testing, conformance testing, or fixed system testing, if the testing
facility has implemented appropriate containment, treatment, and
disposal or storage measures to prevent discharges of the foam to
the environment. Appropriate containment, treatment, and disposal or storage measures may not include flushing, draining, or
otherwise discharging the foam into a storm or sanitary sewer.
(3m) NOTIFICATION; SAFETY DATA SHEETS. (a) A person
who uses or discharges a fire fighting foam under the exemption
in sub. (3) (a) shall notify the department of the use or discharge
immediately or as soon as practicable without hindering fire
fighting or fire prevention operations. A person who possesses a
fire fighting foam that may be used under the exemption in sub.
(3) (a) shall request and retain any safety data sheets relating to
the fire fighting foam and shall make them available to the department for examination after providing the notice under this
paragraph.
(b) A person who uses a fire fighting foam under the exemption in sub. (3) (b) shall notify the department immediately of any
discharge of the foam to the environment.
(4) CONSTRUCTION. Nothing in this section shall be construed as prohibiting the manufacture, sale, or distribution of a
class B fire fighting foam that contains intentionally added PFAS.
(5) RULES. The department shall promulgate rules to implement and administer this section, including to determine appropriate containment, treatment, and disposal or storage measures
for testing facilities under sub. (3) (b).

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