(1)    Exemption from liability for groundwater contamination. A person is exempt from s. 292.11 (3), (4) and (7) (b) and (c) with respect to the existence of a hazardous substance in the groundwater on property possessed or controlled by the person if all of the following apply:

      (a)    The discharge of the hazardous substance originated from a source on property that is not possessed or controlled by the person.

      (b)    The person did not possess or control the hazardous substance on the property on which the discharge originated or cause the original discharge.

      (c)    The person conducts an investigation or submits other information, that the department determines is adequate, to substantiate that pars. (a) and (b) are satisfied.

      (d)    The person agrees to allow the department, any authorized representatives of the department, any party that possessed or controlled the hazardous substance or caused the discharge of the hazardous substance and any consultant or contractor of such a party to enter the property to take action to respond to the discharge.

      (f)    The person agrees to avoid any interference with action undertaken to respond to the discharge and to avoid actions that worsen the discharge.

      (g)    The person agrees to any other condition that the department determines is reasonable and necessary to ensure that the department or other person described in par. (d) can adequately respond to the discharge.

   (1m)   Exemption from liability for soil contamination. A person is exempt from s. 292.11 (3), (4) and (7) (b) and (c) with respect to the existence of a hazardous substance in the soil, including sediments, or in vapor emitted from the soil or groundwater on property possessed or controlled by the person if all of the following apply:

      (a)    The discharge of the hazardous substance originated from a source on property that is not possessed or controlled by the person.

      (b)    The person did not possess or control the hazardous substance on the property on which the discharge originated or cause the original discharge.

      (c)    The person conducts an investigation or submits other information, that the department determines is adequate, to substantiate that pars. (a) and (b) are satisfied.

      (d)    The person agrees to allow the department, any authorized representatives of the department, any party that possessed or controlled the hazardous substance or caused the discharge of the hazardous substance and any consultant or contractor of such a party to enter the property to take action to respond to the discharge.

      (e)    The person agrees to take one or more of the following actions at the direction of the department if, after the department has made a reasonable attempt to notify the party who caused the discharge of the hazardous substance about the party’s responsibilities under s. 292.11, the department determines that the action or actions are necessary to prevent an imminent threat to human health, safety or welfare or to the environment:

         1.    Limit public access to the property.

         2.    Identify, monitor and mitigate fire, explosion and vapor hazards on the property.

         3.    Visually inspect the property and install appropriate containment barriers.

      (f)    The person agrees to avoid any interference with action undertaken to respond to the discharge and to avoid actions that worsen the discharge.

      (g)    The person agrees to any other condition that the department determines is reasonable and necessary to ensure that the department or other person described in par. (d) can adequately respond to the discharge.

   (2)   Determinations concerning liability. The department shall, upon request, issue a written determination that a person who possesses or controls property on which a hazardous substance exists in the soil or groundwater, or in vapor emitted from the soil or groundwater, is exempt from s. 292.11 (3), (4) and (7) (b) and (c) if the person satisfies the applicable requirements in subs. (1) and (1m). The department may revoke its determination if it determines that any of the requirements in sub. (1) or (1m) cease to be met.

   (3)   Fees. The department may, in accordance with rules that it promulgates, assess and collect fees to offset the costs of issuing determinations under sub. (2).