Document:

SAFETY-KLEEN

                         SENIOR EXECUTIVE RETENTION PLAN

PURPOSE
-------
To provide a meaningful  financial incentive to Senior Executives to remain with
Safety-Kleen  during the turnaround and  re-structuring  process.  This Plan has
been  approved  by  the  Company's  Board  of  Directors  and  confirmed  by the
Bankruptcy Court.

EFFECTIVE DATE
---------------
The Effective Date of this plan is September 8, 2000.

ELIGIBILITY
----------
Selected  Senior  Executives  of  the  Company  whose   participation  has  been
specifically  approved  by the  Chairman  & CEO  and  the  President  & COO.  No
individual,  group or  position  type is  guaranteed  participation,  and  every
individual who is selected to participate  will receive written  confirmation of
their  selection.  Participation  does  not  guarantee  an  award,  nor  does it
guarantee continued employment with the company.

RETENTION AWARD AMOUNT
----------------------
The Retention Award will be equal to 52.89% of Participant's  annual base salary
amount as of September 8, 2000.

RETENTION PERIOD
----------------
Except as provided under number 4 below, in order to receive an award under this
Plan,  the  participant  must  be  actively  employed  by  Safety-Kleen,  or its
subsidiaries  from the  Effective  Date of this Plan through  December 31, 2001,
which is the Retention Period.

PLAN ADMINISTRATION
-------------------
The following Rules and Policies will be used to administer the Plan:

1.       The  Retention  Award will be paid in a lump sum as soon as  practical,
         but no later than January 30, 2002.
2.       All awards are subject to tax withholding.
3.       All  participants  must be actively  employed by  Safety-Kleen,  or its
         subsidiaries  during  the  entire  Retention  Period to  receive a full
         award.
4.       In the event of death,  permanent disability,  or a termination without
         "Cause"  or by the  Senior  Executive  for "Good  Reason"  (defined  in
         Section 4.3 and 4.4 of the Change of Control  Agreement  which is being
         awarded to the Senior Executive  simultaneous with participation in the
         Retention   Plan.)  of  the   participant,   the   participant  or  the
         participant's  estate will receive a prorated portion of the full award
         based upon the  number of days  during the  Retention  Period  that the
         participant was actively employed.
5.       Except as provided  under number 4 above,  no award will be paid to any
         participant who voluntarily leaves  Safety-Kleen  during any portion of
         the Retention Period.
6.       No award will be paid to any  participant who is terminated for "Cause"
         during the Retention Period.
7.       Participation in this Plan replaces, and is in lieu of, the benefits of
         any other  retention plan or similar plan that the participant may have
         had with the Company.

PLAN INTERPRETATION
In  the  event  of any  questions,  disagreements  or  disputes  concerning  the
application of the Plan's  Administrative Rules, the Retention Award amount, the
Retention Period, Plan eligibility or any other matter related to this Plan, the
Senior  Vice  President,  Administration,  Safety-Kleen  will  interpret  and/or
resolve  the  issue,  and his  decision  will be  final  and  binding.  All Plan
Participants must sign a copy of this Plan document acknowledging that they will
be  bound  by  the   Administrative   Rules  and  policies  as  a  condition  to
participation in the Plan.

<PAGE>

NON-COMPETE
-----------
In  consideration  of receiving the Retention  Award  provided by this plan, the
Senior Executive agrees that for six months following termination of employment,
Senior  Executive shall not solicit  directly or indirectly any of the customers
served  by the  Company  or any  employees  of the  Company  at the  time of the
termination of his/her employment.

The terms of this agreement which deal with time period,  geographical  area and
scope  of  activities  restricted  shall  be  deemed  divisible  so  that if any
provision is determined by a court of law to be invalid or  unenforceable,  such
provisions  shall be deemed  modified so as to be valid and  enforceable  to the
full extent lawfully permitted.

CONFIDENTIALITY
---------------
As there  are a  limited  number  of these  awards  available,  you are asked to
maintain the confidentiality of this agreement.

I  acknowledge  receipt  of this  retention  plan  and  agree to all  terms  and
conditions contained herein.

---------------------------------------                   ----------------
Name - print                                                    DATE

---------------------------------------
Name - signatureSAFETY-KLEEN

                         SENIOR EXECUTIVE SEVERANCE PLAN

PURPOSE
-------
To provide meaningful  security to Senior Executives to remain with Safety-Kleen
during the turnaround and re-structuring process. This Plan has been approved by
the Company's Board of Directors and confirmed by the Bankruptcy Court.

ELIGIBILITY
-----------
Selected  Senior  Executives  of  the  Company  whose   participation  has  been
specifically  approved  by the  Chairman  & CEO  and  the  President  & COO.  No
individual,  group or  position  type is  guaranteed  participation,  and  every
individual who is selected to participate  will receive written  confirmation of
their  selection.  Participation  does  not  guarantee  an  award,  nor  does it
guarantee continued employment with the Company.

SEVERANCE AMOUNT
----------------
Two years base  salary and  benefits  for  termination  by the  Company  without
"Cause" or by the Senior Executive for Good Reason.  (defined in Section 4.3 and
4.4 of the  Change of  Control  Agreement  which is being  awarded to the Senior
Executive simultaneous with participation in the Severance Plan.)

SEVERANCE TERMS AND CONDITIONS
------------------------------
Upon  termination,  30% (7.2 months) of the entire severance amount will be paid
to the Senior Executive.  If the Senior Executive  remains  unemployed after 7.2
months, Senior Executive will return to normal payroll until such time as Senior
Executive is employed subject to a maximum  severance and benefit payment of the
remaining 16.8 months. If Senior Executive obtains  employment 10% of any unpaid
severance will be paid in a lump sum and benefits will cease.

OUTPLACEMENT
------------
Outplacement benefits with a cap of $25,000.

PLAN INTERPRETATION
-------------------
In  the  event  of any  questions,  disagreements  or  disputes  concerning  the
application  of the Plan's  Administrative  Rules,  the  Severance  Amount,  the
Severance Terms and Conditions,  Eligibility or any other matter related to this
Plan, the Senior Vice  President,  Administration,  Safety-Kleen  will interpret
and/or resolve the issue,  and his decision will be final and binding.  All Plan
Participants must sign a copy of this Plan document acknowledging that they will
be  bound  by  the   Administrative   Rules  and  policies  as  a  condition  to
participation in the Plan.

SETTLEMENT & RELEASE
--------------------
The Company's  Settlement  and Release  Agreement  must be executed prior to any
severance payments.

CONFIDENTIALITY
---------------
As there  are a  limited  number  of these  awards  available,  you are asked to
maintain the confidentiality of this agreement.

I  acknowledge  receipt  of this  severance  plan  and  agree to all  terms  and
conditions contained herein.

---------------------------------------                   ----------------
Name - print                                                     DATE

---------------------------------------
Name - signatureSAFETY-KLEEN

                            EXECUTIVE RETENTION PLAN

PURPOSE
-------
To  provide a  meaningful  financial  incentive  to  Executives  to remain  with
Safety-Kleen  during the turnaround and  re-structuring  process.  This Plan has
been  approved  by  the  Company's  Board  of  Directors  and  confirmed  by the
Bankruptcy Court.

EFFECTIVE DATE
--------------
The Effective Date of this plan is September 8, 2000.

ELIGIBILITY
-----------
Selected  Executives of the Company whose  participation  has been  specifically
approved by the Chairman & CEO and the President & COO. No individual,  group or
position type is guaranteed participation,  and every individual who is selected
to  participate   will  receive  written   confirmation   of  their   selection.
Participation  does not  guarantee  an award,  nor does it  guarantee  continued
employment with the company.

RETENTION AWARD AMOUNT
----------------------
The  Retention  Award will be equal to 40% of  Participant's  annual base salary
amount as of September 8, 2000.

RETENTION PERIOD
----------------
Except as provided under number 4 below, in order to receive an award under this
Plan,  the  participant  must  be  actively  employed  by  Safety-Kleen,  or its
subsidiaries  from the  Effective  Date of this Plan through  December 31, 2001,
which is the Retention Period.

PLAN ADMINISTRATION
-------------------
The following Rules and Policies will be used to administer the Plan:
1.       The  Retention  Award will be paid in a lump sum as soon as  practical,
         but no later than  January 30,  2002.
2.       All awards are subject to tax withholding.
3.       All  participants  must be actively  employed by  Safety-Kleen,  or its
         subsidiaries  during  the  entire  Retention  Period to  receive a full
         award.
4.       In the event of death,  permanent disability,  or a termination without
         "Cause",  the  participant or the  participant's  estate will receive a
         prorated portion of the full award based upon the number of days during
         the  Retention  Period  that the  participant  was  actively  employed.
         ("Cause"  is  defined  as conduct  which  constitutes  willful or gross
         misconduct  or willful or gross  negligence in the  performance  of the
         employee's  duties for the Company;  intentional or habitual neglect of
         employee's duties for the Company; theft or misappropriation of Company
         funds; failure,  neglect or refusal to substantially perform employee's
         obligations,  including  but not limited to devoting  time,  attention,
         efforts and  energies to the  business of the Company and  adherence to
         Company  policies;   or  otherwise   breaching  the  standards  of  job
         performance established by the Company.)
5.       No  award  will be  paid  to any  participant  who  voluntarily  leaves
         Safety-Kleen during any portion of the Retention Period.
6.       No award will be paid to any  participant who is terminated for "Cause"
         during the Retention Period.
7.       Participation in this Plan replaces, and is in lieu of, the benefits of
         any other  retention plan or similar plan that the participant may have
         had with the Company.

PLAN INTERPRETATION
-------------------
In  the  event  of any  questions,  disagreements  or  disputes  concerning  the
application of the Plan's  Administrative Rules, the Retention Award amount, the
Retention Period, Plan eligibility or any other matter related to this Plan, the
Senior  Vice  President,  Administration,  Safety-Kleen  will  interpret  and/or
resolve  the  issue,  and his  decision  will be  final  and  binding.  All Plan
Participants must sign a copy of this Plan document acknowledging that they will
be  bound  by  the   Administrative   Rules  and  policies  as  a  condition  to
participation in the Plan.

<PAGE>

NON-COMPETE

In  consideration  of receiving the Retention  Award  provided by this plan, the
Executive  agrees  that for four months  following  termination  of  employment,
Executive shall not solicit  directly or indirectly any of the customers  served
by the Company or any employees of the Company at the time of the termination of
his/her employment.

The terms of this agreement which deal with time period,  geographical  area and
scope  of  activities  restricted  shall  be  deemed  divisible  so  that if any
provision is determined by a court of law to be invalid or  unenforceable,  such
provisions  shall be deemed  modified so as to be valid and  enforceable  to the
full extent lawfully permitted.

CONFIDENTIALITY
---------------
As there  are a  limited  number  of these  awards  available,  you are asked to
maintain the confidentiality of this agreement.

I  acknowledge  receipt  of this  retention  plan  and  agree to all  terms  and
conditions contained herein.

---------------------------------------                ----------------
Name - print                                                  DATE

---------------------------------------
Name - signature

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