Document:

Filed by Automated Filing Services Inc. (604) 609-0244 - Sonic Technology Solutions Inc. - Exhibit 4.02

EXECUTIVE EMPLOYMENT AGREEMENT

THIS AGREEMENT made as of the 1st day of
July, 2006

BETWEEN:

SONIC ENVIRONMENTAL SOLUTIONS
INC., a Corporation
incorporated under the laws of British Columbia and
having an 
office at #2100-1066 W. Hastings Street, Vancouver, British

Columbia 
(together with any subsidiaries hereinafter referred to as the

“Company”)

OF THE FIRST PART

AND:

ADAM R. SUMEL, executive,
domiciled at 4426 – W. 8th Street,
Vancouver, British Columbia 

(hereinafter referred to as the
“Executive”)

OF THE SECOND PART

WHEREAS:

(A)          
the Company is an industrial company listed on the TSX Venture Exchange; 

(B)           the
Executive has the skills and experience sought by the Company; 

(C)           the
Company and the Executive wish to enter into this Executive Employment Agreement
under the terms and conditions herein; and

(D)           the
Executive and the Company are parties to an Executive Employment Agreement
effective July 1, 2004 (the “Original Employment Agreement”), the original term
of which ends on July 1, 2006.

NOW THEREFORE THIS AGREEMENT WITNESSES that for good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereby agree as follows:

- 2 -

ARTICLE 1

TERM OF EMPLOYMENT

1.1           The
term of employment under this Agreement shall commence on July 1, 2006 (the
“Effective Date”) and shall be for two years with a third year extension
by mutual agreement, subject to termination as provided for in Article 6 hereof.
In accordance with the other terms of this Agreement, the Executive shall devote
himself full-time to his employment duties and responsibilities with the
Company. 

1.2           The
Original Employment Agreement is terminated, and the parties acknowledge that
the terms and conditions by which the Executive is employed are governed by this
Agreement.

ARTICLE 2

DUTIES AND RESPONSIBILITIES

2.1           The
Executive shall serve the Company as an executive officer in the position of
President and Chief Executive Officer.

2.2           The
Executive shall report to the Board and shall undertake and perform the
following duties and responsibilities:

(a)           actively
engage with the Board to ensure that the initiatives of the management team are
aligned with the strategic direction and objectives for the Company that have
been established by the Board;

(b)           provide
overall direction for the Company in order for it to implement agreed strategies
in order to meet Company goals and objectives;

(c)           provide
shareholder and investor communication and manage key investment banking and
institutional relationships;

(d)           make
decisions in line with organizational goals, leading to desired results, and
will be responsible and accountable for results;

(e)           create
and sustain the organizational culture and environment needed to achieve
objectives and results and recruit and retain a high performance operating
team;

(f)           oversee
the management and administration of the Company; and

(g)           such
other duties and responsibilities as may be assigned or vested in him by the
Board from time to time and which are consistent with the duties and
responsibilities of a President and Chief Executive Officer.

- 3 -

2.3           The
Executive agrees, during the continuance of his employment, to devote his entire
working time, services, skill and ability to such employment and to serve at all
times with loyalty and honesty in the best interests of the Company. The
Executive acknowledges that the position of President and CEO will involve
significant travel for business development and for investor relations. Subject
to this Section 2.3, the Executive may engage in other activities for any
charitable or other non-profit institution and may accept External
Directorships. For the purposes of this Section 2.3, “External
Directorships” shall mean any board of directors, advisory board or counsel
for a for-profit organization. The Executive may assume External Directorships
provided that (i) such External Directorships shall comply with the
non-competition provisions contained in Article 7; and (ii) such External
Directorships do not materially and adversely affect the Executives ability to
perform his functions in accordance with this Agreement.

ARTICLE 3

BASE COMPENSATION

3.1           In
consideration of the services provided by the Executive hereunder, the Company
shall, as of the Effective Date, pay to the Executive an annual base salary in
the amount of $180,000 ($15,000/month) less applicable deductions for income
tax, CPP, WC, and as increased from time to time in accordance with Section 3.2
(“Base Salary”), payable in such manner as may be agreeable to the
Parties and in compliance with any applicable legislation. 

3.2           Such
Base Salary shall be reviewed and maintained or increased by the Compensation
Committee of the Board every twelve (12) months based on the Executive’s
performance. Any recommended increase shall first be approved by the Board.

3.3           The
Executive shall be entitled to, but not guaranteed, an annual performance bonus
(“Bonus”) payable at the discretion of the Board of Directors.

ARTICLE 4

INCENTIVE COMPENSATION

4.1           The
Executive shall participate in the Company’s share option plan (the
“Plan”) or any successors thereto. Subject to all requisite corporate and
stock exchange approvals, the Executive will receive additional incentive stock
options exercisable to purchase a total of 200,000 common shares pursuant to the
Plan. The incentive stock options will have an exercise price determined in
accordance with the Plan and, subject to Section 3.7 of the Plan, will
immediately vest as to 133,340 common shares and on January 1, 2007as to the
remaining 66,660 common shares. In addition, the Executive will be eligible to
receive additional incentive stock option grants from time to time whenever the
Board’s Compensation Committee determines it appropriate.

4.2           Notwithstanding
the terms of the Plan, if the Company notifies the Executive of the termination,
without just cause, of his employment, or the Executive resigns (as defined in

- 4 -

Section 6.6 hereof), any options (“Options”) to purchase
shares in the capital of the Company which have been granted to the Executive,
whether under the Plan or otherwise, and which have not yet vested, shall
automatically vest and be exercisable upon the date of such notification and the
Executive shall be entitled to exercise such Options along with any other
Options which had previously vested but were unexercised at the time of
notification of termination within a period of 90 days after termination, but
not thereafter.

4.3           If
the Executive is terminated without just cause after a Change of Control, all
remaining Options under the Plan or otherwise which have not yet vested shall
automatically vest. The Executive shall be entitled to exercise the Options
which vest pursuant to the application of this Section 4.3 together with any
Options which had previously vested but were not yet exercised at the time of
the Change of Control within a period of 90 days following the termination of
employment, but not thereafter.

4.4           Except
as otherwise provided in Article 4 herein, the terms of the Plan shall govern.
Except as explicitly provided herein, in the event of any inconsistency between
the Plan and Article 4, the terms of this Article 4 shall prevail.

ARTICLE 5

BENEFITS

Group Insurance and Health

5.1           The
Executive shall be eligible for any group medical and dental insurance
applicable to the executives of the Company, upon the establishment of such
programs by the Company and as per the terms and conditions of such programs.
The Company shall pay or reimburse the Executive for provincial health care
programs, including health, dental and reasonable disability insurance programs
not paid through source deductions The Company will cover the regular monthly
dues of the Executive at the Terminal City Club and the costs of an annual,
extensive health check at the Mayo Clinic or another reputable, private medical
facility. 

Vacation

5.2           The
Executive shall be entitled to 20 Business Days (as defined in Section 9.11) of
annual paid vacation during each year. Unused vacation may not be carried over
for more than twelve months after the completion of each fiscal year.

Expenses

5.3           The
Executive shall be reimbursed for all reasonable out-of-pocket expenses incurred
on behalf of the Company within 14 days following receipt of an expense report
received by the Company in respect of such expenses.

Vehicle

5.4           The
Company shall lease a vehicle for the exclusive use of the Executive.

- 5 -

ARTICLE 6

TERMINATION OF THIS AGREEMENT

6.1           Notwithstanding
any other provisions herein but subject to Section 9.8 hereof, and without
prejudice to rights accrued to the Executive to the Date of Termination (as
defined herein), this Agreement shall terminate automatically upon the death of
the Executive or on the Date of Termination. The “Date of Termination”
will be, as applicable, the date the Company terminates the Executive in
accordance with Section 6.2, or the date the Company terminates the Executive or
the Executive resigns in accordance with Section 6.6 hereof, or the date the
Executive commences his retirement in accordance with Section 6.5 hereof, or the
date determined in accordance with Section 6.4 hereof. 

6.2           Nothing
in this Agreement shall restrict or impair the Company’s right to terminate the
employment of the Executive without compensation at any time by notice in
writing from the Company to the Executive for just cause, which without limiting
the generality of the foregoing, shall include: 

(a)           serious
and wilful misconduct;

(b)           breach
of fiduciary duty; 

(c)          
failure to obey the reasonable and lawful direction of the Board and such
failure is not cured or complied with by the Executive within 10 days following
notice of non-compliance by the Board;

(d)          
fraud; 

(e)           theft;

(f)           wilful
breach or habitual neglect of significant and material duties the Executive is
required to perform; and 

(g)           material
breach of a restrictive covenant of this Agreement.

6.3           Except
to the extent modified by §6.4, if

(a)          
the Company terminates the Executive for any reason other than just cause,

(b)           the
Company replaces or enters into an agreement to replace the Executive in the
position of Chief Executive Officer (unless the Executive waives this
provision), or 

(c)           if
the Executive shall become permanently disabled,

then this Agreement will be deemed to be terminated and the
Company will pay the Executive 15 months’ salary within 20 days of termination
plus incentive compensation owed. For purposes of subsection 6.3(c), the
Executive shall be deemed to be permanently disabled immediately following: 

- 6 -

(i)          
any period of 365 consecutive days during which he is prevented, notwithstanding
reasonable efforts to accommodate the disability, from performing his essential
duties as an executive of the Company for more than 182 days in the aggregate by
reason of illness or mental or physical disability; or 

(ii)          
him being found of unsound mind or incapable of managing his own affairs by the
final judgement or order of a court of competent jurisdiction.

6.4          
At any time during his employment, should a Change of Control (as defined below)
event occur and this Agreement is terminated for any reason other than voluntary
resignation by the Executive within 90 days of such Change of Control or 30 days
following the next Annual General Meeting of the Company, whichever is longer,
the Executive will be entitled to a severance payment equal to 30 months’
salary, plus incentive compensation owed, plus health and insurance benefits,
within thirty days of the termination. At the election of the Company, the
severance payment may be made in one lump sum payment, or paid over a period of
time not exceeding 24 months.

                 For
the purpose of this clause, a Change of Control shall be deemed to have occurred
when:

(a)           a
person or corporate entity and its associates and affiliates collectively own
more than 50.1% of the voting shares of the Company a Change of Control shall be
deemed to have occurred; or 

(b)           a
majority of the directors elected at any annual or special general meeting of
shareholders of the Company are not individuals nominated by the Company’s
then-incumbent board of directors.

                  A
Change of Control will be deemed to have not occurred if a person or corporate
entity and its associates and affiliates acquire a minimum 50.1% of the voting
shares of the Company in a distressed acquisition (the “Distressed
Acquisition”). A Distressed Acquisition occurs when a minimum of 50.1% of
the voting shares of the Company are acquired for a total acquisition price of
less than $5 million.

                  Following
a Change in Control, the Executive may terminate his employment under this
Agreement at any time after the expiry of 90 days of the day on which there is a
Change of Control, as described in this agreement.

6.5          
This Agreement is terminated, without prejudice to rights accrued to the
Executive to the Date of Termination, when the Executive commences his
retirement.

6.6          
The Executive may, by providing 120 days notice in writing to the Company (the
“Notice Period”), terminate this Agreement and his employment with the
Company. In such circumstance, the Company may request that the Executive cease
duties prior to the expiry of the Notice Period. The Company shall, in such
event, pay to the Executive an amount equal to the difference between what the
Executive would have received had the employment of the Executive been continued
for the Notice Period and the amount actually paid by the Company to the
Executive during the Notice Period. In the event the Executive provides such
notice to the 

- 7 -

Company, the “Date of Termination” shall mean the last
day on which the Executive works for the Company.

ARTICLE 7

NON COMPETITION

7.1          
During the term of this Agreement and for the 12 months following the
termination or expiration of this Agreement, the Executive shall not:

(a)          
own or have any interest directly in; nor

(b)          
act as an officer, director, agent, employee or consultant for

any person, firm, association, partnership, corporation or
other entity (the “Competitive Entity”) engaged in sonoprocessing or the
industrial mixing industry.

7.2          
The Executive acknowledges that the restrictions contained in Section 7.1 are
reasonable; however, in the event that any court should determine that any of
the restrictive covenants contained in Section 7.1 of this Agreement, or any
part thereof, are unenforceable because of the duration of such provision or the
area covered thereby, such court shall have the power to reduce the duration or
area of such provision and, in its reduced form, such provision shall then be
enforceable and shall be enforced.

ARTICLE 8

CONFIDENTIALITY

8.1          
The term “Confidential Information” means any and all information
concerning any aspect of the Company not generally known to persons other than
those associated with the Company. The Company may disclose, in writing or
orally, certain Confidential Information to the Executive.

8.2          
The Executive acknowledges and agrees that any Confidential Information
disclosed to the Executive is in the strictest confidence. Any Confidential
Information disclosed to the Executive in any form whatsoever is and shall be
considered confidential and proprietary information of the Company.

8.3          
Except as authorized by the Company, the Executive will not, except in the
course of his duties to the Company:

(a)          
duplicate, transfer or disclose nor allow any other person to duplicate,
transfer or disclose any of the Company’s Confidential Information; or

(b)          
use the Company’s Confidential Information without the prior written consent of
the Company.

- 8 -

8.4          
The Executive will safeguard all Confidential Information at all times so that
it is not exposed to or used by unauthorized persons, and will exercise at least
the same degree of care that would be used to protect the Executive’s own
confidential information.

8.5          
Any and all technical reports, engineering drawings or reports, accounting and
financial records and like information and materials received from the Company
and any copies or excerpts thereof containing proprietary or Confidential
Information will remain the property of the Company and will, upon the request
of the Company, be promptly returned to the Company by the Executive.

8.6          
The restrictive obligations set forth above shall not apply to the disclosure or
use of any information which:

(a)           is
or later becomes publicly known under circumstances involving no breach of this
Agreement by the Executive;

(b)           is
already known to the Executive at the time of receipt of the Confidential
Information;

(c)           is
lawfully made available to the Executive by a third party; or

(d)           is
authorized by the Board of Directors of the Company.

8.7          
The provisions of Article 8 shall survive the termination of this Agreement for
a period of one year after termination.

ARTICLE 9

MISCELLANEOUS

9.1          
This Agreement shall be the whole and complete agreement between the Parties
with respect to the employment of the Executive; it replaces and supersedes any
and all previous verbal or written agreements that may have been entered into,
and may not be amended or modified except by written amendment signed between
the Parties hereto.

9.2          
In the event that any part of this Agreement shall be determined at any time to
be invalid, such provisions shall be deemed severable and deleted herefrom and
the remainder of this Agreement shall constitute the whole agreement of the
Parties hereto and shall, except as hereinbefore provided, continue in full
force and effect.

9.3          
The Executive hereby confirms that he is not a party to any agreement or under
any other obligation to anyone, including any former employer nor does the
Executive have any other interest which is inconsistent with or in conflict with
or which would prevent, limit or impair the Executive’s performance of any
obligations hereunder which the Executive has not disclosed in writing to the
Company. The Executive acknowledges that the Company is not requesting the
Executive disclose any confidential information which the Executive may have
obtained from a former employer.

- 9 -

9.4          
The Executive acknowledges that a breach by the Executive of any of the
covenants contained in Article 7, Article 8 and Article 9 of this Agreement
shall result in damages to the Company and that the Company could not be
adequately compensated for such damages by a monetary award. Accordingly, in the
event of any such breach, in addition to all other remedies available to the
Company at law or in equity, the Company shall be entitled as a matter of right
to apply to a court of competent jurisdiction for such relief by way of
restraining order, temporary or permanent injunction, decree or otherwise, as
may be appropriate to ensure compliance with the provisions of this
Agreement.

9.5          
The Executive acknowledges that the restrictions contained in Article 7 and
Article 8 are reasonable and valid and the Executive hereby waives all defences
to the strict enforcement thereof by the Company.

9.6          
The Executive acknowledges that he has had independent legal advice regarding
the execution of this Agreement and that she understands the contents of this
agreement.

9.7          
This Agreement shall enure to the benefit of and be binding upon the Parties
hereto, their respective successors, heirs, representatives, administrators and
the assigns of the Company. The Executive shall not assign or transfer this
Agreement or any of rights or obligations hereunder.

9.8          
The provisions of Article 7 and Article 8 shall survive the termination of this
Agreement.

9.9          
Any amount payable under this Agreement shall be paid in Canadian currency.

9.10         This Agreement
  shall be governed by and construed according to the laws of the Province of
  British Columbia, and both Parties hereby agree that the Courts of the Province
  of British Columbia have exclusive jurisdiction in any dispute, action, cause
  or action or otherwise that may arise from this Agreement.

9.11         Any notice
  or other communication or writing required or permitted to be given under this
  Agreement or for the purposes of this Agreement shall be in writing and shall
  be sufficiently given if delivered personally, or if transmitted by facsimile
  transmission (with original to follow by mail) or other form of recorded communication,
  tested prior to transmission, to:

(a)           if
to the Company:

               Sonic
Environmental Solutions
Inc.
              
#2100-1066 W. Hastings St, Vancouver, B.C., V6E 3X2

              
Attention:          Chief Financial
Officer

              
Phone: 604-736-2552, FAX: 604-736-2558

- 10 -

(b)           if
to the Executive:

              
Adam R.
Sumel
              
#2100-1066 W. Hastings St, Vancouver, B.C., V6E 3X2

              
Phone: 604-736-2552, FAX: 604-736-2558

or to such other address as the party to whom such notice is to
be given shall have last notified the party giving the same in the manner
provided in this Section. Any notice so delivered shall be deemed to have been
given and received on the day it is so delivered at such address, provided that
such day is not a Business Day then the notice shall be deemed to have been
given and received on the Business Day next following the day it is so
delivered. Any notice so transmitted by facsimile transmission or other form of
recorded communication shall be deemed to have been given and received on the
day of its confirmed transmission (as confirmed by the transmitting medium),
provided that if such day is not a Business Day then the notice shall be deemed
to have been given and received on the Business Day next following such day.

“Business Day” means any day that is not a Saturday,
Sunday or civic or statutory holiday in the Province of British Columbia;

9.12         No amendment
  or waiver of any provision of this Agreement shall be binding on any party unless
  consented to in writing by such party and approved by the Board in the case
  of the Company. No waiver of any provision of this Agreement shall constitute
  a waiver of any other provision nor shall any waiver constitute a continuing
  waiver unless otherwise provided.

IN WITNESS WHEREOF this Agreement has been executed by
the parties as of the date first above written.

	The Corporate Seal of 	) 	  
	SONIC ENVIRONMENTAL SOLUTIONS 	) 	  
	INC. was affixed in the presence of: 	) 	  
	  	) 	  
	  	) 	C/S 
	Per:  ______________________________________	) 	  
	               
         Authorized Signatory 	) 	  
	  	) 	  
	Per:  ______________________________________	) 	  
	               
         Authorized Signatory 	) 	  

- 11 -

	Signed, Sealed and Delivered by the Executive
    	) 	  
	in the presence of: 	) 	  
	  	) 	  
	  	) 	  
	___________________________________________________	) 	 
    
	Witness (Signature) 	) 	ADAM R. SUMEL 
	  	) 	  
	___________________________________________________	) 	  
	Name (please print) 	) 	  
	 	)	 
	___________________________________________________ 
	) 	  
	Address 	) 	  
	  	) 	  
	___________________________________________________	) 	  
	City, Province 	) 	  
	  	) 	  
	___________________________________________________	) 	  
	Occupation 	)Filed by Automated Filing Services Inc. (604) 609-0244 - Sonic Technology Solutions Inc. - Exhibit 4.03

PLAN OF MERGER AMENDING AGREEMENT

THIS AGREEMENT made as of the 22nd day of March,
2007.

AMONG:

ALAN CASH, of 5033 Seachase
Street, San Diego, California, 92130 

(“Cash”)

AND:

SONIC ENVIRONMENTAL SOLUTIONS
INC., a corporation incorporated under the laws of British Columbia

(“Sonic”)

AND:

SONIC ENVIRONMENTAL SOLUTIONS
CORP., a corporation incorporated under the laws of California

(“Sonic Corp.”)

WHEREAS:

	A. 	
      Cash and Sonic entered into an agreement and plan of
      merger dated September 26, 2005 (the “Merger Agreement”) pursuant to which
      Cash sold his interest in Terra-Kleen Response Group, Inc. to
  Sonic;

	 	 
	B. 	
      Pursuant to the Merger Agreement, Cash was appointed
      President of Sonic Corp., a wholly owned subsidiary of Sonic, and has
      served on the Board of Directors of Sonic; and

	 	 
	C. 	
      Cash and Sonic/ Sonic Corp. wish to discontinue their
      relationships and have entered into this Plan of Merger Amending Agreement
      (the “Agreement”).

                  
NOW THEREFORE THIS AGREEMENT WITNESSES that in consideration of the
respective premises, promises and conditions herein contained and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties agree as follows:

ARTICLE 1
DEFINITIONS AND
INTERPRETATION

1.1                 Definitions.
  In this Agreement the following capitalized words will have the following
  meanings:

- 2 -

	 	(a) 	
      “Deliverables” has the meaning given to it in
      Section 2.1(f) of this Agreement;

	 	 	 
	 	(b) 	
      “Employment Agreement” means the Executive
      Employment Agreement dated December 21, 2005 between Cash and Sonic Corp.
      (formerly Sonic Environmental Solutions (USA) Inc.) pursuant to which Cash
      was appointed President of Sonic Corp.;

	 	 	 
	 	(c) 	
      “Escrow Agreement” means the escrow agreement
      dated December 21, 2005 among Sonic, Cash and Pacific Corporate Trust
      Company;

	 	 	 
	 	(d) 	
      “Office” has the meaning given to it in section
      4.2 of this Agreement;

	 	 	 
	 	(e) 	
      “Merger Agreement” has the meaning given to it in
      the Recitals to this Agreement;

	 	 	 
	 	(f) 	
      “Mutual General Release” has the meaning given to
      it in Section 2.1(g) of this Agreement;

	 	 	 
	 	(g) 	
      “Settlement” means completion of the transactions
      and other things contemplated to be done under this Agreement on or before
      the Time of Completion;

	 	 	 
	 	(h) 	
      “Shares” has the meaning given to it in Section
      5.2 of this Agreement; and

	 	 	 
	 	(i) 	
      “Time of Completion” means 2:00 p.m. (Vancouver
      Time) on March 22nd , 2007 or such other time or date as the
      parties may agree in writing.

	1.2 	
      Interpretation. For the purposes of this
      Agreement, except as otherwise provided:

	 	 	 
		(a) 	
      “this Agreement” means this Plan of Merger Amending
      Agreement as it may from time to time be supplemented or amended and in
      effect;

	 	 	 
		(b) 	
      All references in this Agreement to “Articles”,
      “Sections” and other subdivisions are to the designated Articles, Sections
      and other subdivisions of this Agreement;

	 	 	 
		(c) 	
      The words “herein”, “hereof”, “hereunder” and other words
      of similar import refer to this Agreement as a whole and not to any
      particular Article, Section or other subdivision;

	 	 	 
		(d) 	
      The headings are for convenience only and do not form a
      part of this Agreement and are not intended to interpret, define or limit
      the scope, extent or intent of this Agreement or any provision
    hereof;

	 	 	 
		(e) 	
      The singular or any terms includes the plural, and
      vice versa, the use of any term is equally applicable to any gender
      and, where applicable, a body corporate, the word “or” is not exclusive
      and the word “including” is not limited whether or not non-limiting
      language (such as “without limitation” or “but not limited to” or words of
      similar import) is used with reference hereto;

- 3 -

	 	(f) 	
      Where the time for doing an act falls or expires on a day
      other than a business day, the time for doing such act is extended to the
      next day which is a business day;

	 	 	 
	 	(g) 	
      Any reference to a statute is a reference to the
      applicable statute and to any regulations made pursuant hereto and
      includes all amendments made thereto and in force from time to time and
      any statue or regulation that has the effect of supplementing or
      superseding such statute or regulation;

	 	 	 
	 	(h) 	
      All references to “$” or dollars is to lawful currency of
      the United States unless otherwise stated to be in lawful currency of
      Canada;

	 	 	 
	 	(i) 	
      The parties acknowledge that they have mutually
      negotiated all of the terms of this Agreement and that the provisions of
      this Agreement are to be construed in accordance with their fair and plain
      meanings and not strictly construed against either party;

	 	 	 
	 	(j) 	
      To the extent any provisions of the body of this
      Agreement contradicts or is inconsistent with any of the other agreement
      to be entered into by the parties concurrently herewith, the precise terms
      and conditions of the final executed version of such formal agreement,
      release, order or notice, and not this Agreement, shall govern;
  and

	 	 	 
	 	(k) 	
      Any reference to a “month” means a calendar month
      commencing at 12:01 a.m. (local time) on the first day of such month and
      ending at 11:59 p.m. (local time) on the last day of such
  month.

ARTICLE 2
TERMS OF AMENDMENT

2.1               Agreement
to Settle. Subject to the conditions herein, the parties agree to
settle, resolve and release each other of and from all matters of controversy
between them to the date hereof, on the following terms, such Settlement to take
place at the Time of Completion:

	 	(a) 	
      Sonic will pay to Cash US$250,000;

	 	 	 
	 	(b) 	
      The Employment Agreement will terminate at the Time of
      Completion and each party will be released from any and all of their
      current and future obligations thereunder;

	 	 	 
	 	(c) 	
      At the Time of Completion each party will be released
      from any and all current and future obligations under the Merger
      Agreement, other than those set forth in Part 12 of the Merger Agreement,
      which shall remain in effect in accordance with its terms, as
    amended;

	 	 	 
	 	(d) 	
      Subject to the terms and conditions of Article 5 hereof,
      the Escrow Agreement will be terminated at the time and in the manner
      specified in such section;

- 4 -

	 	(e) 	
      At the Time of Completion, Cash will resign as a director
      and officer of Sonic and its affiliates;

	 	 	 
	 	(f) 	
      Cash will deliver to Sonic all contacts, files, programs,
      data, contracts, potential contracts, customer lists and any other
      materials and locations involving Terra- Kleen, Sonic Corp. and Sonic in
      the possession of Cash (the “Deliverables”) and will clarify and provide
      advice with respect to any subsequent questions of Sonic with regard to
      such matters on request in accordance with Section 6.1 hereof;
  and

	 	 	 
	 	(g) 	
      Cash and Sonic and Sonic Corp. agree to enter into a
      mutual release (the “Mutual General Release”) of all claims and liability
      under the Merger Agreement (except Part 12 thereof), the Employment
      Agreement and otherwise relating to the Sonic/Sonic Corp. business in the
      form attached as Schedule “A” to this Agreement.

ARTICLE 3
COMPLETION

3.1               Time
  and place of Completion. The Settlement contemplated herein will
  complete and become effective at the Time of Completion at the office of Sonic
  in Vancouver, British Columbia.

	3.2 	
      Deliveries at Completion. At the Time of
      Completion:

	 	 	 	 
		(a) 	
      Sonic and Sonic Corp. shall deliver or cause to be
      delivered such documents and conduct such actions as are reasonably
      required to implement the transaction contemplated hereunder, including
      the following deliveries:

	 	 	 	 
			(i) 	
      the amount of US$250,000 delivered by wire
  transfer

	 	 	 	 
			(ii) 	
      a copy of the Mutual General Release executed by
      authorized signatories of Sonic and Sonic Corp.; and

	 	 	 	 
			(iii) 	
      a copy of the termination agreement in respect of the
      Employment Agreement executed by authorized signatories of Sonic and Sonic
      Corp., as applicable.

	 	 	 	 
		(b) 	
      Cash shall, against delivery of the above, deliver or
      cause to be delivered such documents and conduct such actions as are
      reasonably required to complete the transaction contemplated hereunder,
      including the following deliveries:

	 	 	 	 
			(i) 	
      a copy of the Mutual General Release executed by
    Cash;

	 	 	 	 
			(ii) 	
      resignations from all positions Cash currently holds as a
      director or officer of Sonic and its affiliates;

	 	 	 	 
			(iii) 	
      a copy of the termination agreement in respect of the
      Employment Agreement executed by Cash; and

- 5 -

	 	(iv) 	
      the Deliverables.

ARTICLE 4
OBLIGATIONS FOLLOWING
COMPLETION

4.1               Upon
the Settlement becoming effective, Cash agrees, for a period of two years, not
to make any damaging or disparaging remarks against Sonic or its affiliated
companies, or any of its officers or employees. Sonic and Sonic Corp. will not,
and agree to direct their officers and managers not to, make any damaging or
disparaging remarks against Cash, and will use all reasonable measures to ensure
that any other employees or individuals closely associated with them do not make
any damaging or disparaging remarks against Cash. Nothing in this section,
however, will preclude any statement or disclosure required by law or lawful
process.

4.2               Cash
agrees to close the existing office of Sonic Corp. located in San Diego,
California (the “Office”) by March 31, 2007, and to take all such actions
necessary and incidental to such closure, including cleaning and disposing of
all contaminated waste on the site in accordance with applicable laws. 

ARTICLE 5

RELEASE FROM ESCROW AND SHARE RESTRICTION

5.1               Upon
the Settlement becoming effective, Sonic and Cash agree that the Escrow
Agreement will be terminated and the 620,990 common shares of Sonic (the
“Shares”) held in escrow pursuant to the Escrow Agreement will be released from
escrow.

5.2               Upon
the Shares being released from escrow, Cash agrees to provide written notice to
Sonic two business days prior to Cash offering for sale or proposing to sell
more than 20,000 of the Shares at any one time.

5.3               Notwithstanding
the obligation of Cash to provide notice to Sonic in accordance with Section
5.2, Sonic confirms that it is under no obligation to notify Cash of any
undisclosed facts or changes with respect to Sonic or its affiliates.

ARTICLE 6
TECHNICAL ASSISTANCE

6.1               Upon
the Settlement becoming effective, Cash agrees to provide assistance to Sonic
and Sonic Corp. in transitioning the relationships of Terra Kleen Response
Group, Inc. and Sonic Corp. from Cash to a designated representative of Sonic,
provided such assistance does not otherwise constitute or require substantive
involvement in the business and affairs of Sonic.

ARTICLE 7
CONFIDENTIALITY

7.1               Confidential
Information. For the purposes of this Article 7, “Confidential
Information” shall mean, in relation to Sonic or Sonic Corp., all financial,
technical, operational, commercial, environmental, staff and other information
and data directly or indirectly relating to the business of Sonic, Sonic Corp.
or any of their affiliates, including without limitation information relating to
(i) customers and suppliers in Canada, United States, Japan, Taiwan, Australia,
Slovakia and

- 6 -

any other jurisdiction in which Sonic, Sonic Corp. or their
affiliates have commenced the conduct of business; and (ii) intellectual
property, trade secrets and extensions and improvements made prior to the date
of this Agreement to the remediation or treatment of soils and waste streams by
the use of extraction chemicals to remove or detoxify contaminants.

7.2               Disclosure.
Except as otherwise provided for or contemplated herein, Cash shall
keep confidential all Confidential Information and shall not disclose, divulge,
publish, transcribe, use or transfer such Confidential Information, in whole or
in part, without the prior written consent of Sonic and Sonic Corp., which may
be arbitrarily withheld, provided that such confidentiality shall not apply to
such Confidential Information or any part thereto to the extent that:

	 	(a) 	
      it is made to a lawyer or professional advisor who has a
      need to know such information in the course of their business for or on
      behalf of or with Cash;

	 	 	 
	 	(b) 	
      in respect of such information required to be disclosed
      by regulatory or governmental authorities; and

	 	 	 
	 	(c) 	
      otherwise required by applicable law to be
    disclosed.

7.3               Agreement.
Except as otherwise provided for or contemplated herein, the
parties to this Agreement shall keep confidential this Agreement and any of the
transactions or matters contemplated in this Agreement. The parties shall not
and shall take such reasonable steps to ensure that their employees, agents,
advisors or representatives do not disclose, divulge, publish, transcribe, or
transfer such information, in whole or in part, without the prior written
consent of the other parties, which may be arbitrarily withheld, provided that
such confidentiality shall not apply to such information or any part thereto to
the extent that:

	 	(a) 	
      it is made to a consultant, contractor, lawyer or
      professional advisor who has a need to know such information in the course
      of their business for or on behalf of or with the disclosing
  party;

	 	 	 
	 	(b) 	
      in respect of such information required to be disclosed
      by regulatory or governmental authorities; or

	 	 	 
	 	(c) 	
      otherwise required by applicable law to be
    disclosed.

ARTICLE 8
GENERAL

8.1               Manner
of Notice. Any notice, demand or other communication required or
permitted to be given under this Agreement shall be in writing and shall be
addressed to the party at the following address or fax number:

in the case of Cash to:

5033 Seachase Street
San Diego, CA,
92130

Fax no.:

- 7 -

in the case of Sonic and Sonic Corp.
to:

2100 – 1066 West Hastings
Street
Vancouver, B.C.
V6C 2B5

Fax no.: (604) 736-2558
Attention:
James Hill

The date of receipt of such notice,
demand or other communication shall be the date of the delivery thereof if
delivered and on the day of telecopying, if telecopied.

8.2               Change
of Address. Either party may at any time and from time to time
notify the other party in writing, in the manner provided herein, of a change of
address and the new address to which notice shall be give to it thereafter until
further change.

8.3               Prior
Agreements. Except as set forth in Section 2.1(d), this Agreement
shall supersede and replace any agreement or arrangement, whether oral or
written, heretofore existing between the parties.

8.4               Waiver
or Consent. No consent or waiver expressed or implied by any party
in respect of any breach or default by any other party in the performance by
such other of its obligations hereunder shall be deemed or construed to be a
consent to a waiver of any other breach or default.

8.5               Enurement.
This Agreement shall enure to the benefit of and be binding upon the parties and
their respective heirs, executors, administrators, legal representatives,
successors and permitted assigns.

8.6               Governing
Law. This Agreement (including the certificates, agreements,
instruments or other documents contemplated herein) shall be governed by and
construed in accordance with the laws of California.

8.7               Time
of the Essence. Time shall be of the essence in this Agreement.

8.8               Costs.
Each party shall pay their own costs and expenses of and incidental to the
preparation of this Agreement and completion of the transactions contemplated
hereby.

8.9              
Further Assurances. Each party shall, at their expense, promptly
and duly execute and deliver to the other all such further agreements,
instruments, certificates or other documents, and do all such acts or things as
the other may reasonably request from time to time in order to more effectively
carry out the intent and purposes of this Agreement.

8.10             Independent
  Legal Advice. Each of the parties acknowledges that they have been
  advised to and have obtained independent legal advise (or has declined doing
  so, despite having the opportunity to do so) with respect to the terms of this
  Agreement prior to its execution and

- 8 -

further acknowledges that they understand the terms hereof and
of their rights and obligations hereunder.

8.11             Counterparts.
  This Agreement may be executed in any number of counterparts and each such counterpart
  shall, for all purposes, be deemed to constitute one and the same agreement
  with force and effect on the date hereof, notwithstanding that all parties are
  not signatories to the same counterpart or executed this Agreement on the same
  date.

8.12            Damages
  Inadequate. The parties hereto acknowledge and agree that irreparable
  damage would occur in the event that any provisions of this Agreement (including
  the Schedules hereto) were not performed in according with their specific terms
  or were otherwise breached and consequently each agrees that the other shall
  be entitled to an injunction or injunctions to prevent a breach or anticipated
  breach and to enforce the specific terms and provisions hereof in a court, in
  addition to any other remedy to which they may be entitled at law or equity.

8.13           
  Submission/Attornment to Jurisdiction. For the purpose of any
  legal action or proceeding brought by a party hereto in respect of this Agreement
  or any other document or certificate issued under or arising out of or in connection
  with this Agreement or any other document or certificate issued under or arising
  out of or in connection with this Agreement or any act, omission, default or
  actionable event occurring in connection therewith, each of them hereby irrevocably
  submits and attorns to the jurisdiction over the parties, and agrees to be bound
  by any judgment of the courts of California and not to seek, and hereby waives,
  any review of its merits by the courts of any other jurisdiction.

8.14            Entire
  Agreement. The parties acknowledge and agree that this Agreement
  is the complete and exclusive statement of the agreement between the parties
  in respect of the subject matter hereto, that there are no implied warranties,
  terms, conditions or collateral agreements, expressed, implied or statutory,
  other than the terms set out herein, that this agreement supersedes all proposals,
  drafts, discussions or prior agreements, oral or written, and all other communications
  between the parties relating to the subject-matter of this Agreement, all of
  which shall be deemed to have been merged into this Agreement and the interpretation
  hereof shall not be effected by any prior agreement, understanding, representation,
  prior offers, draft agreements or the prior course of conduct of the parties
  hereto.

8.15            Severance.
  It is intended that all of the provisions of this Agreement shall be fully binding
  and legally effective between the parties, provided however, that if a court
  of competent jurisdiction finds any particular provision or provisions hereof
  are void, voidable or unenforceable for any reason, then the particular provision
  or provisions or such part thereof as such court may consider necessary shall
  be deemed to be severed from the remainder of this Agreement and all other provisions
  shall remain in full force and effect as if the invalid provision had been omitted
  therefrom.

- 9 -

IN WITNESS WHEREOF this Agreement has been executed by
the parties as of the date first written above.

	 	
	 
	Witness 	ALAN CASH
    

SONIC
ENVIRONMENTAL SOLUTIONS INC.

Per:
___________________________________
        Title

SONIC
ENVIRONMENTAL SOLUTIONS CORP.

Per:
___________________________________
       
Title

SCHEDULE “A”

MUTUAL GENERAL RELEASE

AMONG:

ALAN CASH, of 5033 Seachase
Street, San Diego, California, 92130;

(“Cash”)

AND:

SONIC ENVIRONMENTAL SOLUTIONS
INC., a corporation incorporated under the laws of British Columbia

(“Sonic”) 

AND:

SONIC ENVIRONMENTAL SOLUTIONS
CORP., a corporation duly incorporated under the laws of California

(“Sonic Corp.”)

WHEREAS Cash, Sonic and Sonic Corp. contemporaneously
herewith have entered into an agreement dated the date hereof (the “Plan of
Merger Amending Agreement”), pursuant to which, among other things, Sonic,
Sonic Corp. and Cash have terminated the Employment Agreement (as defined
herein) and released each other from any and all current and future obligations
under the Merger Agreement (with the exception of those Sections and Parts
thereof referred to herein and in the Plan of Merger Amending Agreement) (as
defined herein);

AND WHEREAS in conjunction with the Plan of Merger
Amending Agreement, the parties have agreed to release each other from any
claims between the parties or their affiliated and related entities on the terms
contained herein.

NOW THEREFORE IN CONSIDERATION OF the mutual covenants,
terms and agreements herein contained, and for other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged,
Sonic, Sonic Corp. and Cash hereby agree as follows:

	1. 	
      In this Mutual General Release, the following capitalized
      terms have the following meanings:

	 	 
		
      “Affiliate” means, in relation to a person or
      entity, any person, partnership, limited liability company, joint venture,
      corporation, or other form of enterprise which Controls, is Controlled by,
      or is under common Control with, such person or
entity;

1

		
      “Control” when used as a verb means (i) when used
      with respect to an entity, the ability, through one or more
      intermediaries, to direct or cause the direction of the management and
      policies of such entity through the legal or beneficial ownership of
      voting securities or membership interests, the right to appoint managers,
      directors or corporate officers, rights arising under operating agreements
      or other contracts, a voting trust or otherwise; and (ii) when used with
      respect to a person, means the actual or legal ability to control the
      actions of another, through family relationship, agency, contract or
      otherwise; and “Control” used as a power means an interest which gives the
      holder the ability to exercise any of the foregoing powers;

	 	 
		
      “Employment Agreement” means the Executive
      Employment Agreement dated December 21, 2005 between Cash and Sonic Corp.
      (formerly Sonic Environmental Solutions (USA) Inc.) pursuant to which Cash
      was appointed President of Sonic Corp.;

	 	 
		
      “Merger Agreement” means the merger agreement
      dated September 26, 2005 pursuant to which Cash sold his interest in
      Terra-Kleen Response Group, Inc. to Sonic; and

	 	 
		
      “Subsidiary” means an entity that is Controlled by
      another entity.

	 	 
	2. 	
      Cash does hereby remise, release and forever discharge
      each of Sonic, Sonic Corp., and each of Sonic and Sonic Corp.’s
      Affiliates, Subsidiaries, directors, officers, shareholders, employees,
      servants, agents, successors, assigns, heirs, executors, and
      administrators (hereinafter individually or together referred to as the
      “Sonic Releasees”) of and from any and all actions, causes of
      action, claims, suits, accounts, bonds, debts, contracts, demands,
      damages, interest, costs, expenses and compensation of whatsoever kind and
      howsoever arising, whether in law or in equity, whether in statute or
      otherwise (including without limitation under the United States Age
      Discrimination in Employment Act “ADEA”), whether contractual or
      extra-contractual, whether known or unknown (each, a “Claim”) which
      Cash now has or at any time hereafter may have against the Sonic Releasees
      arising out of the Employment Agreement, or the termination of it, the
      Merger Agreement (including, without limitation, payment obligations under
      subsections 3.2 (c), 3.2(d) and 3.2(e) thereof), his service as an officer
      or director or other involvement with the Sonic Releasees or any cause,
      matter or thing whatsoever existing or done or omitted to be done by the
      Sonic Releasees, at any time up to and including the date hereof; provided
      however, for greater certainty, nothing in the foregoing shall release or
      discharge Sonic from its obligations under the Plan of Merger Amending
      Agreement.

	 	 
	3. 	
      In accordance with the Older Workers' Benefit Protection
      Act of 1990 and the ADEA, Cash is aware of the following: (1) he has the
      right to consult with an attorney before signing this Agreement (he is
      advised to consult with an attorney), and to the extent, if any, that Cash
      has desired, he has done so; (2) he has twenty- one (21) days in which to
      review and consider this release, and that he may use
as

2

		
      much or as little of this twenty-one (21) day period as
      he wishes prior to signing; (3) for a period of seven (7) days following
      the execution of this release, Cash may revoke this release (which
      includes a release covering any claim he may have under the ADEA) and the
      release shall not become effective or enforceable until that revocation
      period has expired without revocation; and (4) this release is not
      intended to waive any rights or claims with respect to events occurring
      after the date it is executed. Nothing in this release shall be deemed to
      preclude Cash from filing an age discrimination charge or claim under the
      ADEA with the United States Equal Employment Opportunity Commission
      (“EEOC”), although he may have no right to monetary or other relief or
      remedy by reason of the claims he has released in this release, or from
      participating in any investigation or proceeding conducted by the EEOC on
      any ADEA claim. Also, nothing in this Agreement shall be deemed to
      preclude Cash from challenging in any court or before any agency the
      knowing and voluntary nature of the waiver of any ADEA claim.

	 	 
	4. 	
      Each of Sonic and Sonic Corp. do hereby remise, release
      and forever discharge Cash and his heirs, executors and personal
      representatives (collectively, the “Cash Releasees”) from all
      Claims which Sonic and Sonic Corp. now have or hereafter may have against
      the Cash Releasees, for or by reason of or in any way arising out of the
      Employment Agreement, the Merger Agreement (other than Part 12 thereof, as
      amended), Cash’s service as an officer or director or other involvement
      with Sonic Corp., Sonic and its Subsidiaries, or any cause, matter or
      thing whatsoever existing, or done or omitted to be done by Sonic Corp.,
      Sonic and its Subsidiaries, at any time up to and including the date
      hereof; provided however, for greater certainty, nothing in the foregoing
      shall release or discharge Cash from his obligations under the Plan of
      Merger Amending Agreement.

	 	 
	5. 	
      It is the intention of the parties in executing this
      instrument that it shall be effective as a bar to each and every claim,
      demand and cause of action herein above specified. In the furtherance of
      this intention, the parties hereby expressly waive any and all rights and
      benefits conferred upon them by the provisions of section 1542 of the
      California Civil Code and expressly consent that this Agreement shall be
      given full force and effect according to each and all of its express terms
      and provisions, including those relating to unknown and unsuspected
      claims, and causes of action, if any. Section 1542 of the California Civil
      Code provides:

               
   A general release does not extend to claims which the creditor does
not know or suspect to exist in his or his favor at the time of executing the
release, which if known by him or his must have materially affected his or his
settlement with the debtor.

Notwithstanding the provisions of section 1542, this Agreement
shall be in full settlement of all claims and disputes being released herein,
including unknown claims. The parties expressly waive all rights under section
1542, which section has been explained to them by their legal counsel, if they
elect to consult such counsel, and which they fully understand. The parties
waive all rights that they

3

		
      may have by virtue of section 1542 and any similar law of
      any state or territory of the United States, or federal law.

	 	 
	6. 	
      The provisions of this Mutual General Release shall enure
      to the benefit of the Sonic Releasees, the Cash Releasees, and the
      successors and assigns of each the Sonic Releasees and the Cash Releasees
      and shall be binding upon the heirs, executors, administrators, successors
      and assigns of each of Sonic, Sonic Corp. and Cash.

	 	 
	7. 	
      This Mutual General shall be governed by, and interpreted
      and enforced in accordance with, the laws of California and the federal
      laws of the United States applicable therein.

DATED as of the 22nd day of March, 2007.

SONIC
ENVIRONMENTAL SOLUTIONS INC.

Per:
___________________________________
        Authorized Signatory

SONIC
ENVIRONMENTAL SOLUTIONS CORP.

Per:
___________________________________
       
Authorized Signatory

	 	
	 
	Witness 	ALAN CASH
    

4

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00125-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00125-of-00352.parquet"}]]