Document:

Exhibit 10.2

March
20, 2007

Edwards Lifesciences LLC

One Edwards Way

Irvine, California 92614

Attention:  General Counsel

Gentlemen:

As
you know, Edwards Lifesciences LLC (“Edwards”), PLC Systems Inc. (“PLC Parent”)
and PLC Medical Systems, Inc. (“PLC”) are parties to the following agreements:

A.            A certain Distribution Agreement (the “Distribution
Agreement”), dated as of January 9, 2001, as amended, pursuant to which Edwards
has agreed to distribute and sell the carbon dioxide laser system and related
accessories described therein and manufactured by PLC;

B.            A certain Shareholders Agreement (the “Shareholders
Agreement”), dated as of January 9, 2001, as amended, pursuant to which the
parties have set forth their agreement concerning certain governance matters of
PLC Parent as well as certain matters relating to Edwards’ ownership and
disposition of certain shares of PLC Parent capital stock;

C.            A certain Manufacturing License Agreement (the “Manufacturing
License Agreement”), dated as of January 9, 2001, as amended, pursuant to which
PLC licensed certain manufacturing rights to Edwards; and

D.            A certain Securities Purchase Agreement (the “Securities
Purchase Agreement”), dated as of January 7, 2001, pursuant to which Edwards
purchased shares of the Common Stock and warrants of PLC Parent.

Edwards,
PLC and PLC Parent have agreed that it is in their respective best interests
for Edwards to assign the Distribution Agreement to Novadaq Corp., a Delaware
corporation (“Novadaq”), as set forth herein, and to terminate the other
agreements referenced above.

Accordingly,
we have agreed as follows:

I.    Distribution
Agreement

1)              PLC
hereby consents to the assignment by Edwards to Novadaq of the Distribution
Agreement and all rights thereunder, including the appointment of Edwards as
PLC’s exclusive independent distributor described in Section 2.1 thereof, all
as more fully set forth in the Assignment and Assumption Agreement entered into
on March 20, 2007 by and among Edwards, PLC Parent, PLC, and Novadaq Corp.  Each of Edwards and PLC hereby expressly
agrees that following such assignment, except as expressly set forth herein,
neither party shall have any liability or continuing obligation to the other on

 1
 

                        account
of the Distribution Agreement and that Edwards has no right to revert to its
rights under the Distribution Agreement. 
Attached hereto on Schedule A is a list of the agreements between
Edwards and Novadaq Corp. and their respective affiliates relating to such
assignment.  Edwards represents and
warrants that (a) it has not assigned to any person any rights under the
Distribution Agreement. Without limitation, Edwards represents and warrants
that it has not appointed any secondary or sub-distributor to sell the Products
(as defined in the Distribution Agreement).

2)              The
provisions of Sections 7.1, 7.2, 7.3, 7.5 and 7.6 (insofar as they relate to
transactions prior to the closing) and Sections 9.2, 9.3, 9.4, 10.2, 11.1 and
11.15 of the Distribution Agreement shall survive the assignment of the
Distribution Agreement. For purposes of clarification, Sections 7.1, 7.2, 7.3,
7.5 and 7.6 of the Distribution Agreement shall terminate for all purposes
other than insofar as they relate to transactions prior to the closing.

II.           Shareholders
Agreement

3)              The
Shareholders Agreement is hereby terminated, and each of the parties thereto
hereby expressly agrees that, except as expressly set forth herein, no party
shall have any liability or continuing obligation to the other on account of
such agreement.  Without limiting the
foregoing, Edwards, PLC Parent and PLC agree that the foregoing termination
shall also apply to provisions which state that they shall survive the
termination of the Agreement.   Edwards
represents and warrants that it has not assigned to any person any rights under
the Shareholders Agreement. 
Notwithstanding the above, Articles VI and VII of the Shareholders
Agreement shall survive such termination; provided, however, that PLC shall
have no liability to Edwards or any of its affiliates under Articles VI or VII
of the Shareholders Agreement to the extent that any such liability is caused
by or arises from (i) the above-referenced assignment of the Distribution
Agreement from Edwards to Novadaq, or (ii) Edwards’ failure to vote for a
proposal by PLC to move its jurisdiction of incorporation in a future vote of
the PLC shareholders.

III.      Manufacturing
License Agreement

4)              The
Manufacturing License Agreement is hereby terminated, and each of the parties
thereto hereby expressly agrees that, except as expressly set forth herein, no
party shall have any liability or continuing obligation to the other on account
of such agreement.  Without limiting the
foregoing, Edwards, PLC Parent and PLC agree that the foregoing termination
shall also apply to provisions which state that they shall survive the
termination of the Agreement.   Edwards
represents and warrants that it has not assigned to any person any rights under
the Manufacturing License Agreement.

5)              The
provisions of Article IV (Confidentiality) of the Manufacturing License
Agreement shall survive the termination of the Manufacturing License Agreement.

IV.       Securities
Purchase Agreement

6)              The
Securities Purchase Agreement is hereby terminated, and each of the parties
thereto hereby expressly agrees that no party shall have any or liability or
continuing obligation

 2
 

                        to
the other on account of such agreement. 
Edwards represents and warrants that it has not assigned to any person
any rights under the Securities Purchase Agreement.

V.            Consideration

7)              In consideration of the assignment of the
Distribution Agreement and the termination of the Shareholders Agreement, the
Manufacturing License Agreement and the Securities Purchase Agreement and the
other covenants of Edwards contained herein, PLC agrees that it shall not, and it
shall cause its affiliates to not, for a period of one year after the date
hereof, hire or solicit for employment any personnel of Edwards without the
prior written consent of Edwards.  In consideration of PLC’s consent to the
assignment of the Distribution Agreement and the termination of the
Shareholders Agreement, the Manufacturing License Agreement and the Securities
Purchase Agreement, Edwards covenants that, commencing on the date hereof and
ending thirty (30) months after the date hereof (the “Non-competition
Period”), Edwards shall not, and shall cause its affiliates not to,
sell any devices in the United States which directly compete with the Products
in the field of myocardial revascularization either intraoperative or
percutaneous that uses a device-based channeling means (“DBMR”).  Edwards and its affiliates may market and
sell medical devices, including, without limitation, products that may be used
in connection with revascularization of the heart, as long as such medical
devices are not within the field of DBMR and all other medical devices which it
is selling or developing as of the date hereof. 
Edwards does not currently sell any devices in the field of DBMR.  The obligations in this Paragraph 8 shall
terminate upon any Change of Control of Edwards.  For purposes of this Paragraph 8, “Change of Control of Edwards” means (i) Edwards merges or
consolidates with any other corporation, partnership or other business entity;
or (ii)  Edwards transfers all or
substantially all of Edwards’ business or assets to any other corporation,
partnership or other business entity (other than, in the case of either clause
(i) or (ii), a merger, consolidation or transfer in which the surviving entity
is controlled by the same beneficial owners as controlled Edwards prior to such
transaction).

8)              Edwards
also agrees that it shall not, and it shall cause its affiliates to not, for a
period of one year after the date hereof, hire or solicit for employment any
personnel of PLC Parent or PLC without the prior written consent of PLC.

VI.       Other

9)              The parties shall cooperate with each
other so that each party may issue a press release regarding this letter
agreement and the transactions contemplated herein at a time to be mutually
agreed or as earlier required by law.  A
party shall provide a copy of its press release to the other party at least
twenty-four (24) hours prior to the planned release of such press release to
permit the other party to review and make non-binding suggestions and comments.

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If
the foregoing accurately reflects our agreement, please sign in the space
provided below.

	
  

  	
  PLC SYSTEMS INC.

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/  James G. Thomasch

  
	
   

  	
  Name:

  	
  James G. Thomasch

  
	
   

  	
  Title:

  	
  Senior Vice President and Chief Financial Officer

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  PLC MEDICAL SYSTEMS, INC.

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/  James G. Thomasch

  
	
   

  	
  Name:

  	
  James G. Thomasch

  
	
   

  	
  Title:

  	
  Senior Vice President and Chief Financial Officer

  

 

Agreed and accepted as of
the date set forth above

	
  EDWARDS LIFESCIENCES LLC

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/  Bruce P. Garren

  	
   

  
	
  Name: 

  	
  Bruce P. Garren

  
	
  Title: 

  	
  CVP, General Counsel

  

 

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Schedule A

Agreements
relating to the Assignment of the Distribution Agreement

1.                                       Asset
Purchase Agreement

2.                                       Assignment
and Assumption Agreement (Distribution Agreement) in the form of Exhibit A to
Asset Purchase Agreement

3.                                       Assignment
and Assumption Agreement (Assigned Contracts) in the form of Exhibit B to Asset
Purchase Agreement

4.                                       Bill
of Sale for Inventory in the form of Exhibit C to Asset Purchase Agreement

5.                                       Transition
Services Agreement in the form of Exhibit D to Asset Purchase Agreement

6.                                       Secured
Promissory Note in the form of Exhibit G to Asset Purchase Agreement

7.                                       Security
Agreement, attached as an exhibit to the Secured Promissory Note

 5Exhibit 10.1

Loan No. RIBO51TO5B

REVOLVING TERM LOAN SUPPLEMENT

THIS SUPPLEMENT to the Master Loan Agreement dated October 6,
2005 (the “MLA”), is entered into as of March 26, 2007, between CoBANK, ACB (“CoBank”) and SOUTH DAKOTA SOYBEAN PROCESSORS, LLC, Volga, South
Dakota (the “Company’), and amends and restates the Supplement dated
August 29, 2006, and numbered RIB051T05A.

SECTION 1.      The Revolving Term Loan
Commitment.   On the terms and conditions set forth in the
MLA and this Supplement, CoBank agrees to make loans to the Company from the
date hereof, up to and including March 20, 2013, in an aggregate principal
amount not to exceed, at any one time outstanding, $13,200,000.00 less the
amounts scheduled to be repaid during the period set forth below in Section 5
(the “Commitment”). Within the limits of the Commitment, the Company may
borrow, repay and reborrow.

The Company may, in its sole discretion, elect to permanently reduce
the amount of the Commitment by giving CoBank ten (10) days prior written
notice, Said election shall be made only if the Company is not in default at
the time of the election and will remain in compliance with all financial
covenants after such reduction. Any such reduction shall be treated as n early,
voluntary reduction of the Commitment amount and shall not delay or reduce the
amount of any scheduled Commitment reduction under Section 5 hereof (which
reductions shall continue in semi-annual increments of $1,300,000.00 on the
dates determined in accordance with Section 5), but rather shall result in an
earlier expiration of the Commitment and final maturity of the loans.

SECTION 2.      Purpose.
The purpose of the Commitment is to provide working capital to the Company and
to finance the construction of a soybean refinery.

SECTION 3.      Term.  
Intentionally Omitted.

SECTION 4.      Interest.   The
Company agrees to pay interest on the unpaid balance of the loans in accordance
with one or more of the following interest rate options, as selected by the
Company:

(A)          CoBank Base Rate.   At
a rate per annum equal at all times to 1/2 of 1% below the rate of interest established by CoBank from time
to time as its CoBank Base Rate, which Rate is intended by CoBank to be a reference rate and not its
lowest rate.  The CoBank Base Rate will change
on the date established by CoBank
as the effective date of any change therein and CoBank agrees to notify the Company of any such change.

(B)          Quoted Rate.   At a fixed rate per annum to be quoted by
CoBank  in its sole discretion in each instance. Under this option, rates
may be fixed on such balances and for such periods, as may be agreeable to CoBank in its sole discretion in
each instance, provided that: (1) 
the  minimum  fixed  period shall be 30 days; (2) amounts may be
fixed in increments of  $100,000.00 or
multiples thereof; and (3) the maximum
number of fixes in place at any one time shall be 5.

The Company shall select the applicable rate option at the time it
requests a loan hereunder and may, subject to the limitations set forth above,
elect to convert balances bearing interest at the variable rate option to one
of the fixed rate options. Upon the expiration of any fixed rate period,
interest shall

automatically accrue at the variable rate option provided for above
unless the amount fixed is repaid or fixed for an additional period in
accordance with the terms hereof. Notwithstanding the foregoing, rates may not
be fixed in such a manner as to cause the Company to have to break any fixed
rate balance in order to pay any installment of principal.  All elections provided for herein shall be
made telephonically or in writing arid must be received by 12:00 Noon Company’s
local time. Interest shall be calculated on the actual number of days each loan
is outstanding on the basis of a year consisting of 360 days and shall be
payable monthly in arrears by the 20th day of the following month or on such
other day in such month as CoBank shall require in a written notice to the
Company.

SECTION 5.      Promissory
Note.   The Company promises to repay on the dates
set forth below, the outstanding principal, if any, that is in excess of the
listed amounts:

	
  Payment Date

  	
   

  	
  Reducing Commitment Amount

  	
   

  
	
  September 20,
  2008

  	
   

  	
  $

  	
  11,900,000.00

  	
   

  
	
  March 20, 2009

  	
   

  	
  $

  	
  10,600,000.00

  	
   

  
	
  September 20,
  2009

  	
   

  	
  $

  	
  9,300,000.00

  	
   

  
	
  March 20, 2010

  	
   

  	
  $

  	
  8,000,000.00

  	
   

  
	
  September 20,
  2010

  	
   

  	
  $

  	
  6,700,000.00

  	
   

  
	
  March 20, 2011

  	
   

  	
  $

  	
  5,400,000.00

  	
   

  
	
  September 20,
  2011

  	
   

  	
  $

  	
  4,100,000.00

  	
   

  
	
  March 20, 2012

  	
   

  	
  $

  	
  2,800,000.00

  	
   

  
	
  September 20, 2012

  	
   

  	
  $

  	
  1,500,000,00

  	
   

  

 

followed by a final installment in an amount equal to the remaining
unpaid principal balance of the loans on March 20, 2013. If any installment due
date is not a day on which CoBank is open for business, then such payment shall
be made on the next day on which CoBank is open for business. In addition to
the above, the Company promises to pay interest on the unpaid principal balance
hereof at the times and in accordance with the provisions set forth in Section
4 hereof. This note replaces and supersedes, but does not constitute payment of
the indebtedness evidenced by, the promissory note set forth in the Supplement
being amended and restated hereby.

SECTION 6.      Commitment
Fee.   In consideration of the Commitment, the
Company agrees to pay to CoBank a commitment fee on the average daily unused
portion of the Commitment at the rate of 1/2 of 1% per annum (calculated on a
360 day basis), payable monthly in arrears by the 20th day following each
month. Such fee shall be payable for each month (or portion thereof) occurring
during the original or any extended term of the Commitment.

SECTION 7.      Amendment
Fee.   In consideration of the amendment, the
Company agrees to pay to CoBank on the execution hereof a fee in the amount of
$2,500.00.

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IN WITNESS WHEREOF, the parties have caused this Supplement to be executed by their
duly  authorized officers as of the date
shown above.

	
  CoBANK, ACB

  	
  SOUTH DAKOTA

  
	
   

  	
  SOYBEAN
  PROCESSORS, LLC

  
	
   

  	
   

  
	
  By:

  	
  /s/ Pat
  Schultz

  	
   

  	
  By:

  	
  /s/ Rodney Christianson

  	
   

  
	
   

  	
   

  
	
  Title:

  	
  Assistant
  Corporate Secretary

  	
   

  	
  Title:

  	
  CFO

  	
   

  
										

 

 3

Amendment No. RIB05IA

AMENDMENT

TO THE

MASTER LOAN AGREEMENT

THIS AMENDMENT is entered into as of March 26, 2007,
between CoBANK, ACB (“CoBank”) and SOUTH DAKOTA SOYBEAN PROCESSORS, LLC, Volga, South
Dakota (the “Company”).

BACKGROUND

CoBank and the Company are parties to a Master Loan
Agreement dated October 6, 2005 (such agreement, as previously amended, is
hereinafter referred to as the “MLA”). CoBank and the Company now desire to
amend the MLA.  For that reason, and for
valuable consideration (the receipt and sufficiency of which are hereby
acknowledged), CoBank and the Company agree as follows:

1.   Sections 9(A), (E), (F) and (I) of the MLA
are hereby amended and restated to read as follows:

SECTION 9.  Negative Covenants. Unless otherwise agreed to in writing by
CoBank, while this agreement is in effect the Company will not and will not
permit its Subsidiaries to:

(A)          Borrowings.      
Create, incur, assume, or allow to exist, directly or indirectly, any indebtedness or liability for borrowed money
(including trade or bankers’ acceptances), letters of credit, or the deferred purchase price of property or
services, except for: (i) debt to CoBank (ii) accounts payable to trade creditors incurred in the ordinary
course of business; (iii) current operating liabilities (other than for borrowed money) incurred in the
ordinary course of business; (iv) indebtedness of the Company under its member or patron investment
program, provided, however, that such indebtedness is expressly stated to be subordinate in right of
payment to all obligations of the Company to CoBank; (v) debt of the Company to Urethane Soy Systems
Company’s shareholders in an amount not to exceed $650,000.00, but no extensions, renewals and refinancings
thereof; and (vi) debt of the Company to miscellaneous creditors in an aggregate amount not to exceed $2,000,000.00.

(E)           Loans and Investments.  Make
any loan or advance to any person or entity, or purchase any capital stock, obligations or other
securities of, make any capital contribution to, or otherwise invest in any person or entity, or form or create any
partnerships or joint ventures except: (i) trade credit extended in the ordinary course of business;
and (ii) loans or advances by the Company to Urethane Soy Systems Company in an aggregate principal amount
not to exceed $4,250,000.00 at any one time outstanding.

(F)           Contingent Liabilities.       Assume, 
guarantee, become liable as a surety, endorse, contingently agree to purchase, or otherwise
be or become liable, directly or indirectly (including, but not limited to, by means of a maintenance agreement,
an asset or stock purchase agreement, or any other agreement designed to ensure any creditor
against loss), for or on account of the obligation of any person or entity, except; (i) by the endorsement of negotiable
instruments for deposit or collection or similar transactions in the ordinary course of the Company’s business; and (ii)
pursuant to the Company’s guarantee
of the obligations of the Brookings County Regional Railway Authority to the
State of South Dakota Department
of Transportation ban aggregate principal amount not to exceed $1,810,000.00.

(I)            Leases.  Create, incur, assume, or
permit to exist any obligation as lessee under operating leases or leases which should be capitalized
in accordance with GAAP for the rental or hire of any real or personal property, except: (i) leases of
soybean oil storage tank space with aggregate annual payments not to exceed $400,000.00; (ii) leases of up to 435
tanker and/or hopper railroad cars under terms and conditions acceptable to CoBank; (iii) leases
of other railroad cars, excluding those allowed in (ii) above, with original maturities of less than sixty
(60) months at the Company’s discretion; and (iv) other leases, excluding those allowed above, which do not
in the aggregate require the Company to make scheduled payments to the lessors in any fiscal year of
the Company during the term hereof in excess of $550,000.00.

2.      Except as set forth in this amendment,
the MLA, including all amendments thereto, shall continue in full force and
effect as written.

IN WITNESS WHEREOF, the parties have caused this amendment to
be executed by their duly authorized officers as of the date shown above.

	
  CoBANK, ACB

  	
  SOUTH DAKOTA

  
	
   

  	
  SOYBEAN
  PROCESSORS, LLC

  
	
   

  	
   

  
	
  By:

  	
  /s/ Pat
  Schultz

  	
   

  	
  By:

  	
  /s/ Rodney Christianson

  	
   

  
	
   

  	
   

  
	
  Title:

  	
  Assistant
  Corporate Secretary

  	
   

  	
  Title:

  	
  CFO

  	
   

  
										

 

 2

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