1. TITLE 35: ENVIRONMENTAL PROTECTION
      2. SUBTITLE G: WASTE DISPOSAL
      3. CHAPTER I: POLLUTION CONTROL BOARD
      4. PART 741
      5. PROPORTIONATE SHARE LIABILITY
      6. SUBPART A: GENERAL
      7. Section
      8. SUBPART B: ALLOCATION OF PROPORTIONATE SHARES WHEN A
      9. COMPLAINT HAS BEEN FILED
      10. SUBPART C: VOLUNTARY ALLOCATION PROCEEDINGS
      11. SUBPART A: GENERAL
      12. Section 741.100 Purpose
      13. Section 741.105 Applicability
      14. Section 741.110 Definitions
      15. Section 741.115 Discovery Before an Action is Filed
      16. Section 741.120 Section 58.9(b) Notice
      17. Section 741.125 Notice to Agency
      18. Section 741.130 Discovery After an Action is Filed
      19. Section 741.135 Allocation Factors
      20. Section 741.140 Relief from Final Orders
      21. Section 741.145 Severability
      22. SUBPART B: ALLOCATION OF PROPORTIONATE SHARES WHEN
      23. A COMPLAINT HAS BEEN FILED
      24. Section 741.200 General
      25. Section 741.205 Burden and Standard of Proof
      26. Section 741.210 Final Orders
      27. SUBPART C: VOLUNTARY ALLOCATION PROCEEDINGS
      28. Section 741.300 General
      29. Initiation of Voluntary Allocation Proceeding
      30. Section 741.310 Allocation Proposals and Hearing Requests
      31. Section 741.315 Settlements
      32. Section 741.320 Mediation
      33. Section 741.325 Settlement Through Mediation
      34. Board Review and Final Orders

TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE G: WASTE DISPOSAL
CHAPTER I: POLLUTION CONTROL BOARD
PART 741
PROPORTIONATE SHARE LIABILITY
SUBPART A: GENERAL
Section
741.100
Purpose
741.105
Applicability
741.110
Definitions
741.115
Discovery Before an Action is Filed
741.120
Section 58.9(b) Notice
741.125
Notice to Agency
741.130
Discovery After an Action is Filed
741.135
Allocation Factors
741.140
Relief from Final Orders
741.145
Severability
SUBPART B: ALLOCATION OF PROPORTIONATE SHARES WHEN A
COMPLAINT HAS BEEN FILED
741.200
General
741.205
Burden and Standard of Proof
741.210
Final Orders
SUBPART C: VOLUNTARY ALLOCATION PROCEEDINGS
741.300
General
741.305
Initiation of Voluntary Allocation Proceeding
741.310
Allocation Proposals and Hearing Requests
741.315
Settlements
741.320
Mediation
741.325
Settlement Through Mediation
741.330
Board Review and Final Orders
AUTHORITY: Implementing Section 58.9 and authorized by Section 58.9(d) of the
Environmental Protection Act [415 ILCS 5/58.9]
SOURCE: Adopted in R97-16 at 23 Ill. Reg. 515, effective December 22, 1998.
SUBPART A: GENERAL
Section 741.100
Purpose

The purpose of this Part is to establish procedures under which the Board will allocate
proportionate shares of the performance or costs of a response resulting from the release or
substantial threat of a release of regulated substances or pesticides on, in, under or from a site.
Section 741.105
Applicability
a)
This Part applies to proceedings before the Board in which:
1)
Any person seeks, under the Environmental Protection Act [415 ILCS 5]
or the Groundwater Protection Act [415 ILCS 55], to require another
person to perform, or to recover the costs of, a response that results from a
release or substantial threat of a release of regulated substances or
pesticides on, in, under or from a site; or
2)
Two or more persons seek to allocate among themselves 100 percent of
the performance or costs of a response that results from a release or
substantial threat of a release of regulated substances or pesticides on, in,
under or from a site.
b)
The Board’s procedural rules at 35 Ill. Adm. Code 101 and 103 apply to all
proceedings under this Part. However, in the event of a conflict between the rules
of 35 Ill. Adm. Code 101 and 103 and this Part, this Part applies.
c)
Subpart A of this Part also applies to all proceedings under this Part. However, in
the event of a conflict between the rules of Subpart A and subsequent Subparts of
this Part, the subsequent Subpart applies.
d)
Subpart B of this Part applies when a complaint is filed with the Board that seeks,
under the Environmental Protection Act or the Groundwater Protection Act:
1)
To require any person to perform a response that results from a release or
substantial threat of a release of regulated substances or pesticides; or
2)
To recover the costs of a response that results from a release or substantial
threat of a release of regulated substances or pesticides.
e)
Subpart C of this Part applies when a petition is filed with the Board under
Section 741.305 of this Part to allocate among the participants 100 percent of the
performance or costs of a response that results from a release or substantial threat
of a release of regulated substances or pesticides. No person may file a petition
under Subpart C of this Part when a complaint has been filed in any forum that
addresses the same release or substantial threat of a release.
f)
This Part does not apply to:

1)
Any cost recovery action brought by the State under Section 22.2
of the
Act
to recover costs incurred by the State prior to July 1, 1996
(Section
58.9(f) of the Act);
2)
Sites on the National Priorities List (Appendix B of 40 CFR 300);
3)
Sites where a federal court order or a United States Environmental
Protection Agency order requires an investigation or response;
4)
The owner or operator of a treatment, storage or disposal site:
A)
For which a current permit has been issued or is required under
federal or State solid or hazardous waste laws; or
B)
That is subject to closure or corrective action requirements under
federal or State solid or hazardous waste laws;
5)
The owner or operator of an underground storage tank system subject to
federal or State underground storage tank laws.
g)
This Part applies to any person or site described in subsections (f)(2) through
(f)(5) of this Section to the extent allowed by federal law, federal authorization or
other federal approval.
Section 741.110
Definitions
Except as stated in this Section, or unless a different meaning of a word or term is clear from the
context, the definition of words or terms in this Part is the same as that applied to the same words
or terms in the Environmental Protection Act [415 ILCS 5].
“Act” means the Environmental Protection Act [415 ILCS 5].
“Agency” means the Illinois Environmental Protection Agency.
“Board” means the Pollution Control Board.
Person
means individual, trust, firm, joint stock company, joint venture,
consortium, commercial entity, corporation (including a government
corporation), partnership, association, state, municipality, commission, political
subdivision of a state or any interstate body including the United States
government and each department, agency, and instrumentality of the United
States.
(Section 58.2 of the Act)

Pesticide
means any substance or mixture of substances intended for
preventing, destroying, repelling, or mitigating any pest or any substance or
mixture of substances intended for use as a plant regulator, defoliant or
desiccant.
(Section 3.71 of the Act)
“Proportionate Share” means a person’s share of the performance or costs of a
response based on the degree to which the performance or costs result from the
person’s proximate causation of or contribution to the release or substantial threat
of a release.
Regulated Substance
means any hazardous substance as defined under Section
101(14) of the Comprehensive Environmental Response, Compensation, and
Liability Act of 1980 (P.L. 96-510) and petroleum products including crude oil or
any fraction thereof, natural gas, natural gas liquids, liquefied natural gas, or
synthetic gas usable for fuel (or mixtures of natural gas and such synthetic gas).
(Section 58.2 of the Act)
Release
means any spilling, leaking, pumping, pouring, emitting, emptying,
discharging, injecting, escaping, leaching, dumping, or disposing into the
environment, but excludes any release which results in exposure to persons solely
within a workplace, with respect to a claim which such persons may assert
against the employer of such persons; emissions from the engine exhaust of a
motor vehicle, rolling stock, aircraft, vessel, or pipeline pumping station engine;
release of source, byproduct, or special nuclear material from a nuclear incident,
as those terms are defined in the Atomic Energy Act of 1954, if such release is
subject to requirements with respect to financial protection established by the
Nuclear Regulatory Commission under Section 170 of such Act; and the normal
application of fertilizer.
(Section 3.33 of the Act)
Remedial Action
means those actions consistent with permanent remedy taken
instead of or in addition to removal actions in the event of a release or threatened
release of a
regulated substance or pesticides
into the environment, to prevent or
minimize the release of
regulated substances or pesticides
so that they do not
migrate to cause substantial danger to present or future public health or welfare
or the environment. The term includes, but is not limited to, such actions at the
location of the release as storage, confinement, perimeter protection using dikes,
trenches or ditches, clay cover, neutralization, cleanup of released
regulated
substances or pesticides
or contaminated materials, recycling or reuse, diversion
destruction, segregation of reactive substances, dredging or excavations, repair
or replacement of leaking containers, collection of leachate and runoff, onsite
treatment or incineration, provision of alternative water supplies, and any
monitoring reasonably required to assure that such actions protect the public
health and welfare and the environment. The term includes the costs of
permanent relocation of residents and businesses and community facilities where
the Governor and Director determine that, alone or in combination with other
measures, such relocation is more cost-effective than and environmentally

preferable to the transportation, storage, treatment, destruction, or secure
disposition offsite of
regulated substances or pesticides,
or may otherwise be
necessary to protect the public health or welfare. The term includes offsite
transport of
regulated substances or pesticides
, or the storage, treatment,
destruction, or secure disposition offsite of such
regulated substances or
pesticides
or contaminated materials. Remedial action
also includes
activities
associated with compliance with the provisions of Sections 58.6 and 58.7
of the
Act, including, but not limited to, the conduct of site investigations, preparations
of work plans and reports, removal or treatment of contaminants, construction and
maintenance of engineered barriers, and/or implementation of institutional
controls. (Sections 3.34 and 58.2 of the Act)
Remove
or
Removal
means the cleanup or removal of released
regulated
substances or pesticides
from the environment, actions as may be necessary to
take in the event of the threat of release of
regulated substances or pesticides
into
the environment, actions as may be necessary to monitor, assess, and evaluate the
release or threat of release of
regulated substances or pesticides,
the disposal of
removed material, or the taking of other actions as may be necessary to prevent,
minimize, or mitigate damage to the public health or welfare of the environment,
that may otherwise result from a release or threat of release. The term includes,
in addition, without being limited to, security fencing or other measures to limit
access, provision of alternative water supplies, temporary evacuation and
housing of threatened individuals, and any emergency assistance that may be
provided under the Illinois Emergency Management Act or any other law.
(Section 3.35 of the Act)
Respond
or
Response
means remove, removal, remedy, and remedial action.
(Section 3.40 of the Act)
Site
means any single location, place, tract of land or parcel of property or
portion thereof, including contiguous property separated by a public right-of-
way.
(Section 58.2 of the Act) This term also includes, but is not limited to, all
buildings and improvements present at that location, place or tract of land.
Section 741.115
Discovery Before an Action is Filed
a)
Any person who wishes to engage in discovery before filing an action seeking
proportionate shares may file a petition with the Board for discovery for the sole
purpose of identifying persons who may have proximately caused or contributed
to a release or substantial threat of release of regulated substances or pesticides.
b)
The petition, which must be supported by affidavits, must be brought in the name
of the petitioner and must name as respondents the person or persons from whom
discovery is sought. A brief or memorandum and other supporting documents
may be filed with the petition. The petition must include:

1)
The name and address of the respondents;
2)
The reason the proposed discovery is necessary, including why the
petitioner could not obtain the information sought by any other reasonable
means;
3)
A copy of the proposed discovery requests;
4)
A statement of the petitioner’s basis for belief that there is a release or
substantial threat of a release and that the respondent has or may have the
information sought;
5)
The petitioner’s proposed time for compliance with the order (not
less than 30 days from the date of issuance of the order);
6)
A request that the Board enter an order authorizing petitioner to obtain
such discovery; and
7)
A notice informing the respondent of the opportunity to respond to the
petition within 30 days.
c)
The petitioner must serve a notice of filing and a copy of the petition and any
supporting documents upon the persons to whom the order is to be directed who
must be designated the respondents.
d)
Within 30 days from the date of service of the petition, the respondent may file a
response to the petition supported by affidavits as necessary. The respondent may
file a brief or memorandum and other supporting documents with the response. If
no response is filed, the respondent is deemed to have waived objection to the
discovery sought.
e)
The petitioner may reply to the response within 7 days after the date of service of
the response.
f)
Petitioner must serve and file the petition in accordance with 35 Ill. Adm. Code
101.Subpart C, except that petitioner must initially serve the petition personally,
by registered or certified mail, or by messenger service.
g)
The Board will review the petition, response, affidavits, and any other supporting
documents on file and grant the petition if the Board finds that the requested
discovery, or a portion of the requested discovery that the Board specifies, is
necessary to identify persons who may have proximately caused or contributed to
a release or a substantial threat of a release of regulated substances or pesticides
and that the information could not be obtained by any other reasonable means.

The order will specify a reasonable time for compliance and the method of
compliance.
h)
Unless extended for cause shown, the Board’s order automatically expires 60
days after issuance. If any respondent fails to comply with a discovery request
authorized under this Section, the petitioner may seek penalties under Section 42
of the Act.
i)
The petitioner must bear the respondent’s reasonable expenses of providing the
discovery (excluding attorney fees).
j)
Nothing in this Section limits the ability of any person to obtain information in
any other lawful manner.
k)
No petition under this Section may be brought:
1)
Against agencies subject to the Freedom of Information Act [5 ILCS 140];
or
2)
For information privileged under 35 Ill. Adm. Code 101 and 103.
Section 741.120
Section 58.9(b) Notice
In the event the State of Illinois seeks to require a person who may be liable pursuant to the Act
to conduct
a response
for a release or threatened release of a regulated substance, the Agency
shall provide notice to such person
. S
uch notice shall include the necessity to conduct
a
response
pursuant to Title XVII of the Act and an opportunity for the person to perform the
response. (Section 58.9(b) of the Act)
Section 741.125
Notice to Agency
A person seeking allocation of proportionate shares must serve a copy of the complaint, or the
petition under Subpart C of this Part, on the Agency within 30 days after the filing of the
complaint or petition. Such person must serve the Agency pursuant to 35 Ill. Adm. Code
101.141. The Agency may file an application with the Board to intervene in the proceeding
under 35 Ill. Adm. Code 103.142.
Section 741.130
Discovery After an Action is Filed
a)
Within time limits set by the hearing officer, each party to a proceeding in which
allocation of proportionate shares is sought must compile any and all documents
within its possession or control pertaining to the release or threatened release and
the party’s proportionate share and shall make the records available for review

and copying by the parties. Documents protected from disclosure under 35 Ill.
Adm. Code 101 and 103 are not subject to this Section.
b)
Discovery is governed by 35 Ill. Adm. Code 101 and 103, and all discovery
devices identified in 35 Ill. Adm. Code 101 and 103 are available to all parties in
a proceeding to allocate proportionate shares. Sanctions for failure to comply
with procedural rules, subpoenas, or order of the Board or hearing officer will be
as set forth therein and as otherwise available under the Act.
Section 741.135
Allocation Factors
In determining proportionate shares under this Part, the Board will consider any or all factors
related to the degree to which the performance or costs of a response result from a person’s
proximate causation of or contribution to the release or substantial threat of a release. These
factors include the following:
a)
The volume of regulated substances or pesticides for which each person is
responsible;
b)
Consistent with the provisions of 35 Ill. Adm. Code 742 and the remediation of
the site in a manner consistent with its current and reasonably foreseeable future
use, the degree of risk or hazard posed by the regulated substances or pesticides
contributed by each person;
c)
The degree of each person’s involvement in any activity that proximately caused
or contributed to the release or substantial threat of a release of regulated
substances or pesticides; and
d)
Any other factors relevant to a person’s proportionate share.
Section 741.140
Relief from Final Orders
a)
On written motion by any party, the Board, for any of the reasons set forth
in 35 Ill. Adm. Code 101.301(b), may provide relief from a final order in
which the Board allocated proportionate shares.
b)
Relief under subsection (a) of this Section may include reallocation of
proportionate shares.
c)
The Board may decline to reopen an allocation determination if the motion and
any supporting materials do not demonstrate that the reopening would result in
significant changes in proportionate shares.

d)
A motion under subsection (a) of this Section must be filed with the Board within
one year after entry of the order, except that when the response begins during this
one-year period, a motion under subsection (a) of this Section must be filed with
the Board within three years after entry of the order. Upon written motion, the
Board may extend either of these periods for cause shown.
e)
Any response to a motion under this Section must be filed within 30 days after the
filing of the motion.
Section 741.145
Severability
If any Section, subsection, sentence or clause of this Part is judged invalid, such adjudication
does not affect the validity of this Part as a whole or any Section, subsection, sentence or clause
thereof not judged invalid.
SUBPART B: ALLOCATION OF PROPORTIONATE SHARES WHEN
A COMPLAINT HAS BEEN FILED
Section 741.200
General
This Subpart sets forth the procedures that apply when a complaint is filed with the Board that
seeks, under the Act or the Groundwater Protection Act [415 ILCS 55], to require any person to
perform a response that results from a release or substantial threat of a release of regulated
substances or pesticides, or to recover the costs of a response. This Subpart also sets forth the
burden and standard of proof for such actions.
Section 741.205
Burden and Standard of Proof
a)
To establish a respondent’s proportionate share, the complainant must prove the
following by a preponderance of the evidence:
1)
That the respondent proximately caused or contributed to a release or
substantial threat of a release of regulated substances or pesticides on, in,
under or from a site; and
2)
The degree to which the performance or costs of a response result from the
respondent’s proximate causation of or contribution to the release or
substantial threat of a release as established under subsection (a)(1) of this
Section.
b)
Liability to perform or pay for a response that results from the release or
substantial threat of a release of regulated substances or pesticides on, in, under or
from a site is subject to all defenses allowed by law, including the defenses set
forth in Section 22.2(j) of the Act, and the limitations set forth in Section

58.9(a)(2) of the Act. The respondent raising a defense set forth in Section
22.2(j) or a limitation set forth in Section 58.9(a)(2) of the Act must prove the
defense or limitation by a preponderance of the evidence.
c)
A complainant is not required to plead a specific alleged percentage of liability
for the performance or costs of a response in a complaint that seeks to require a
respondent to perform or pay for a response that results from a release or
substantial threat of a release of regulated substances or pesticides.
Section 741.210
Final Orders
a)
Based on the evidence presented at hearing or in a stipulation, the Board will
enter a final order that determines whether a respondent proximately caused or
contributed to a release or substantial threat of a release.
b)
If the Board determines, under subsection (a) of this Section, that a respondent
proximately caused or contributed to a release or substantial threat of a release,
the Board will, in its final order, order respondent to perform or pay for a
response. The Board will order the respondent to perform or pay for a response
only to the degree to which a preponderance of the evidence shows that the
performance or costs of the response result from the respondent’s proximate
causation of or contribution to the release or substantial threat of a release. In
making this decision, the Board will consider the allocation factors of Section
741.135 of this Part.
c)
If any party fails to comply with the Board’s order under this Section, any party
may seek penalties under Section 42 of the Act. The Board may order a party that
fails to comply with the Board’s order under this Section to pay penalties under
Section 42 of the Act.
SUBPART C: VOLUNTARY ALLOCATION PROCEEDINGS
Section 741.300
General
This Subpart sets forth the procedures that may apply when two or more persons seek to allocate
among themselves 100 percent of the performance or costs of a response that results from a
release or substantial threat of a release of regulated substances or pesticides on, in, under or
from a site. This Subpart also includes procedures for mediation and settlements and the
requirements and standards that the Board will use to issue final orders.
Section 741.305
Initiation of Voluntary Allocation Proceeding
a)
Participants that agree to accept 100 percent of liability to perform or pay for a
response that results from a release or substantial threat of a release of regulated

substances or pesticides on, in, under or from a site, whether or not they stipulate
to specific shares of such liability, may initiate a voluntary allocation proceeding
by filing a petition with the Board if:
1)
There is an Agency-approved Remedial Action Plan for the site under 35
Ill. Adm. Code 740; or
2)
There is a written agreement with the Agency regarding the performance
of a response at the site following the issuance of a notice under Section
4(q) or Section 58.9(b) of the Act.
b)
The petition under subsection (a) of this Section must include the following
information:
1)
The location and identity of the site for which an allocation of
proportionate shares is requested;
2)
The identity of all participants;
3)
The stipulated shares of specific participants, if any;
4)
Certification that the participants agree to allocate among themselves 100
percent of the performance or costs of the response under the Remedial
Action Plan or written agreement with the Agency; and
5)
A statement that the participants choose to engage in either mediation
under Sections 741.320 and 741.325 of this Subpart or to proceed with the
Board’s allocation proceedings under Sections 741.310 and 741.315 of
this Subpart.
c)
Upon determination that the petition contains the required information, the Board
will issue an order accepting the petition and assigning a hearing officer as
necessary.
d)
The nature of any response agreed to as part of a Remedial Action Plan or written
agreement with the Agency cannot be contested during the allocation proceeding.
e)
No person may file a petition under Subpart C of this Part when a complaint has
been filed in any forum that addresses the same release or substantial threat of a
release. If the Agency, the State, or any person files a complaint in any forum
that involves the same release or substantial threat of a release, the Board may,
upon motion by any participant or at its discretion, stay the proceedings under this
Subpart pending the outcome of the other proceeding. The State, the Agency or
any party to the other proceeding also may appear specially to move the Board to
stay the proceedings under this Subpart.

Section 741.310
Allocation Proposals and Hearing Requests
a)
Within 60 days following the close of discovery, the participants must submit a
joint proposal to the Board that must include either or both of the following, as
applicable:
1)
For any or all of the participants, an agreed allocation of proportionate
shares;
2)
A request for hearing on all allocations of proportionate shares for which
the participants have not agreed.
b)
If agreed allocations are reached for all participants, the allocated shares must
total 100 percent of the performance or costs of the response under the Remedial
Action Plan or written agreement with the Agency.
c)
If a hearing is requested as part of the joint proposal under subsection (a) of this
Section, the hearing officer will issue an order to schedule and conduct the
hearing and address any other matters as necessary. The order must require that,
at least 30 days before the date of hearing, each participant submit a pre-hearing
memorandum setting forth the proportionate share that it accepts and the issues to
be resolved at the hearing.
Section 741.315
Settlements
Nothing in this Subpart prohibits the participants from at any time entering into a settlement for
Board review if the settlement allocates among the settling participants 100 percent of the
performance or costs of the response under the Remedial Action Plan or written agreement with
the Agency.
Section 741.320
Mediation
a)
If the participants wish to engage in mediation, the participants may file a joint
notice of that intent with the Board designating a mediator whom the participants
have mutually selected.
b)
While mediation is proceeding, the time period for the allocation proposal and
hearing request under Section 741.310 of this Subpart and all discovery
proceedings under this Part and 35 Ill. Adm. Code 101 and 103 are suspended.
c)
Mediation must be completed within 120 days after the participants have filed
notice of their intent to mediate with the Board. Upon written motion, the Board
may extend this period for cause shown.

Section 741.325
Settlement Through Mediation
a)
If the participants reach an agreement through mediation, it must be reduced to
writing and signed by the participants. Within 14 days after execution of the
agreement, the participants must file a joint motion to dismiss the Board action or
a motion to accept the stipulated settlement agreement.
b)
If the participants do not reach an agreement, the participants must report the lack
of an agreement to the Board and file either:
1)
A joint motion to dismiss the Board action; or
2)
A joint motion to initiate or resume the Board allocation proceeding under
Sections 741.310 and 741.315 of this Subpart.
c)
At any time, the participants may jointly file a motion to cease the mediation and
begin or resume the Board’s allocation proceedings under Sections 741.310 and
741.315 of this Subpart.
Section 741.330
Board Review and Final Orders
a)
Based on the evidence presented at hearing or in a stipulation, the Board will
enter a final order allocating a proportionate share to each participant.
b)
The Board’s final order will allocate 100 percent of the performance or costs of
the response under the Remedial Action Plan or written agreement with the
Agency. If the total of the agreed allocations under Section 741.310(a)(1) of this
Subpart and the proportionate shares demonstrated during the hearing do not
equal 100 percent of the performance or costs of the response, the Board’s order
will allocate the remaining liability for performance or costs among all of the
participants in the same ratio as the shares that have been agreed upon or
demonstrated during the hearing.
c)
The Board’s final order will include an order to perform or pay for the response
based on the proportionate shares determined during the proceeding.
d)
The Board may impose penalties under Section 42 of the Act if a participant fails
to comply with a Board order under this Section.

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