EXHIBIT 10.23






                      FOURTH AMENDMENT TO CREDIT AGREEMENT

     This Fourth  Amendment to Credit  Agreement (this  "Amendment") is made and
entered into effective as of June 3, 2014 (the "Effective Date"), by and between
Synergy Resources Corporation, a Colorado corporation (the "Borrower"),  each of
the Lenders party to the Credit  Agreement (as defined below)  ("Lenders"),  and
Community  Banks of Colorado,  a division of NBH Bank,  N.A.,  individually,  as
Issuing  Bank and as  administrative  agent for the Lenders  (in such  capacity,
together with its successors in such capacity, the "Administrative  Agent"), and
is as follows:

                             Preliminary Statements

            A. Lenders, the Administrative Agent and the Borrower are parties to
an Amended and Restated Credit Agreement dated as of November 28, 2012, as
amended by that First Amendment dated as of February 12, 2013 (the "First
Amendment"), that Second Amendment (the "Second Amendment") dated as of June 28,
2013 (as amended, the "Credit Agreement") and that Third Amendment (the "Third
Amendment") dated as of December 20, 2013. Capitalized terms which are used, but
not defined, in this Amendment will have the meanings given to them in the
Credit Agreement.

            B. The Borrower has requested that Lenders and the Administrative
Agent make certain amendments to the Credit Agreement, all as more particularly
set forth herein.

            C. Lenders and the Administrative Agent are willing to consent to
such requests and so amend the Credit Agreement to reflect such modifications,
all on the terms of this Amendment.

                             Statement of Amendment

     In  consideration  of the mutual covenants and agreements set forth in this
Amendment,  and  for  other  good  and  valuable  consideration,   Lenders,  the
Administrative  Agent,  SunTrust,  Key Bank  and the  Borrower  hereby  agree as
follows:

     1. Amendments to Credit  Agreement.  Subject to the terms and provisions of
this Amendment, the Credit Agreement is hereby amended as follows:

     (a) The following  definitions in Section 1.01 of the Credit  Agreement are
hereby amended and restated in their entirety as follows:

            "Applicable Margin" means, for any day, the rate per annum set forth
      in the Utilization Grid below based upon the Type of Loan or Borrowing and
      the Borrowing Base Utilization Percentage then in effect, subject to a
      minimum interest rate floor of 2.5% per annum:

                                       1


                BORROWING BASE          LIBOR           ABR
                  UTILIZATION          MARGIN         MARGIN
             ----------------------------------------------------
                     = 90%             275 bps        150 bps
             ----------------------------------------------------
                = 75% and < 90%        250 bps        125 bps
             ----------------------------------------------------
                = 50% and < 75%        225 bps        100 bps
             ----------------------------------------------------
                = 25% and < 50%        200 bps        75 bps
             ----------------------------------------------------
                     < 25%             175 bps        50 bps
             ----------------------------------------------------


            "Termination Date" means the earlier to occur of (i) May 29, 2019 or
      (ii) the date that the Aggregate Maximum Credit Amount is sooner
      terminated pursuant to Section 2.06 or Section 10.02."

     (b) The first sentence of Section 3.05(e) of the Credit Agreement is hereby
amended and restated in its entirety as follows:

            "The Borrower agrees to pay to the Administrative Agent for the
      account of each Lender an unused commitment fee equal to (i) if the
      Borrowing Base Utilization Percentage is less than 50%, 0.375% per annum
      and (ii) if the Borrowing Base Utilization Percentage is equal to or
      greater than 50%, 0.50% per annum, in each case calculated on the average
      daily amount of the unused Commitment of such lender during the period
      from and including the date of this Agreement to but excluding the later
      of the date of termination of the Commitments."

     (c) Clause  (ii) of  Section  8.01(n)  of the  Credit  Agreement  is hereby
amended and restated in its entirety as follows:

            "(ii) on a quarterly basis by the 45th day after the end of each
      fiscal quarter of the Borrower, an updated report setting forth the
      forecasted Capital Expenditure budget for the Borrower and its
      Subsidiaries for the remainder of the Borrower's fiscal year; provided,
      however, that in the case of the report delivered during the fourth
      quarter of each fiscal year, such report shall set forth the forecasted
      Capital Expenditure budget for the Borrower and its Subsidiaries for the
      following fiscal year; and"

     (d) Section 9.01(a) of the Credit  Agreement is hereby amended and restated
in its entirety as follows:

            "(a) Total Funded Debt to EBITDAX. The Borrower will not, at any
      time, permit its ratio of Total Funded Debt as of such time to EBITDAX to
      be greater than or equal to 4.0 to 1.0, determined at the fiscal year
      ending August 31, 2012, and each fiscal quarter thereafter."

     (e) Section 9.01(c) and Section 9.01(d) of the Credit  Agreement are hereby
deleted and removed from the Credit Agreement.

                                       2


     (f) Annex I to the Credit  Agreement is hereby  amended and restated in its
entirety to conform to Annex I attached hereto.  The adjustment to each Lender's
Applicable Percentage as set forth on Annex I attached hereto shall be effective
as of the Increase Date (defined below) and each Lender's Applicable  Percentage
prior  to the  Increase  Date  shall be as set  forth  in Annex I to the  Credit
Agreement.

     2.  Adjustments.  On the Effective  Date,  Texas Capital Bank, N.A. will be
paid off and will no longer be a Lender under the Credit Agreement. The Borrower
shall,  in coordination  with the  Administrative  Agent,  repay the outstanding
Loans of Texas Capital Bank,  N.A., and incur additional Loans from the Lenders,
in each case to the extent necessary so that Texas Capital Bank, N.A. is paid in
full  with  respect  to its  Loans  and all of the  Lenders  participate  in the
Borrowings  ratably on the basis of their respective  Commitments  (after giving
effect to any adjustments contemplated by Section 1(f) hereof).

     3. Borrowing Base. In connection  with the third Scheduled  Redetermination
contemplated by Section 2.07 of the Credit Agreement,  the Administrative Agent,
the  Lenders and the  Borrower  have  agreed  that the  Borrowing  Base shall be
increased to $110,000,000, which Borrowing Base adjustment shall be effective as
of the later of June 3, 2014, or the satisfaction of the conditions set forth in
Section 7 hereof (the "Increase Date").

     4. Reaffirmation of Security. The Borrower,  Lenders and the Administrative
Agent hereby  expressly  intend that this Amendment  shall not in any manner (a)
constitute  the  refinancing,   refunding,  payment  or  extinguishment  of  the
Indebtedness evidenced by the existing Loan Documents; (b) be deemed to evidence
a novation  of the  outstanding  balance of the  Indebtedness;  or (c)  replace,
impair,  or extinguish the creation,  attachment,  perfection or priority of the
Liens on the Borrowing Base Properties.  The Borrower ratifies and reaffirms any
and all grants of Liens to Lenders and the Administrative Agent on the Borrowing
Base Properties as security for the Indebtedness,  and the Borrower acknowledges
and  confirms  that the  grants of the Liens to Lenders  and the  Administrative
Agent on the Borrowing Base Properties: (i) represent continuing Liens on all of
the Borrowing Base Properties,  (ii) secure all of the  Indebtedness,  and (iii)
represent  valid,  first and best Liens on all of the Borrowing Base  Properties
except to the extent of any Permitted Liens

     5. Conditions Precedent. This Amendment will not become effective until the
date on which each of the following conditions is satisfied:

     (a) The Borrower  shall have executed and  delivered to the  Administrative
Agent the Promissory Notes attached hereto as Exhibit A (the "Amendment Notes").
These Amendment Notes are issued in substitution for and replacement of, but not
repayment of (i) those certain  Promissory Notes, dated as of December 20, 2013,
issued by the  Borrower  in favor of the  Lenders in  connection  with the Third
Amendment.  The  Amendment  Notes  shall  constitute  a "Note"  as  defined  and
described  in the  Credit  Agreement.  From  and  after  the  date  hereof,  all
references  in the  Credit  Agreement  and in all other  Loan  Documents  to the
"Notes" shall be deemed to be references to the Amendment Notes.

     (b) The  Administrative  Agent  shall have  received  counterparts  of this
Amendment from the Borrower and each of the Lenders.

                                       3


     (c) The Administrative Agent shall have received all fees and other amounts
due and payable on or prior to the effective date of this Amendment.

     (d)  The  Administrative   Agent  shall  have  received  title  information
satisfactory  to it on at  least  80% (by  NPV)  of the  total  Proved  Reserves
attributable  to the Oil and Gas  Properties  evaluated in such Reserve  Report,
with such 80% first being satisfied from Proved  Developed  Producing  Reserves,
next from Proved  Developed  Nonproducing  Reserves and  thereafter  from Proved
Undeveloped Reserves.

     (e) The Administrative  Agent shall have received  information and evidence
satisfactory to it that the Mortgaged Properties represent at least 80% (by NPV)
of the Oil and Gas Properties  evaluated in the most recently  completed Reserve
Report,  with such 80% first being  satisfied from Proved  Developed  Producing,
next from Proved  Developed  Nonproducing  Reserves and  thereafter  from Proved
Undeveloped Reserves.

     (f) No Default or Event of Default shall have occurred that is continuing.

     (g) The  Administrative  Agent shall have received such other  documents as
the Administrative  Agent or counsel to the Administrative  Agent may reasonably
request.

     The  Administrative  Agent shall notify the Borrower and the Lenders of the
effectiveness  of this  Amendment,  and  such  notice  shall be  conclusive  and
binding.

     6.  Representations.  To induce  Lenders  and the  Administrative  Agent to
accept this Amendment,  the Borrower  hereby  represents and warrants to Lenders
and the Administrative Agent as follows:

     (a) Power and Authority. The Borrower has full power and authority to enter
into, and to perform its obligations  under,  this Amendment,  and the execution
and delivery of, and the  performance of its  obligations  under and arising out
of, this Amendment have been duly authorized by all necessary corporate action.


     (b) Legal,  Valid and Binding  Obligation.  This Amendment  constitutes the
legal,  valid and binding  obligation of the Borrower  enforceable in accordance
with its terms,  except as such  enforceability  may be  limited by  bankruptcy,
insolvency,   reorganization   or  similar  laws  affecting   creditors'  rights
generally.

     (c) Continued  Representations  and Warranties.  After giving effect to the
amendments  contained in this  Amendment,  the  Borrower's  representations  and
warranties  contained in the Loan  Documents  are complete and correct as of the
date of this Amendment with the same effect as though these  representations and
warranties had been made again on and as of the date of this Amendment,  subject
to those  changes  as are not  prohibited  by,  or do not  constitute  Events of
Default under, the Credit Agreement.

     (d) No Defenses. The Borrower has no defenses to payment, counterclaims, or
right of set-off with respect to any  Indebtedness  existing as of the Effective
Date.

                                       4


     (e) No  Events  of  Default.  No  Event  of  Default  has  occurred  and is
continuing.

     (f) Material  Adverse Effect.  The Borrower hereby affirms that no Material
Adverse Effect has occurred

     7. Fees, Costs and Expenses. As a condition of this Amendment, the Borrower
will (i) in connection with the execution and delivery of this Amendment, pay to
the Administrative Agent for the account of each Lender (A) a fee equal 0.25% of
the such Lender's Commitment as in effect prior to this Amendment,  and(B) a fee
equal 0.375% of the  increase in such  Lender's  Commitment  as a result of this
Amendment,  and (ii) reimburse the Administrative  Agent's for all out of pocket
expenses (including reasonable attorneys' fees) incurred in connection with this
Amendment.

     8. Release.  The Borrower,  on its behalf and, as applicable,  on behalf of
the Borrower's  officers,  directors,  shareholders,  Affiliates,  Subsidiaries,
successors  and  assigns   (collectively,   the  "Releasing  Parties"),   hereby
represents   and  warrants   that  such   Releasing   Parties  have  no  claims,
counterclaims,  setoffs,  actions or causes of action, damages or liabilities of
any kind or nature  whatsoever,  whether in law or in equity,  in contract or in
tort, whether now accrued or hereafter maturing (collectively, "Claims") against
Lenders or the Administrative Agent, their direct or indirect Affiliates, or any
of the foregoing's  respective  directors,  officers,  employees,  attorneys and
legal representatives,  or the heirs,  administrators,  successors or assigns of
any of them  (collectively,  "Lender Parties") to the extent that any such Claim
directly  or  indirectly  arises  out of,  is  based  upon  or is in any  manner
connected  with,  any Prior Related Event.  The Borrower,  on its behalf and, as
applicable,  on behalf of the other Releasing Parties,  voluntarily releases and
forever discharges all Lender Parties from any and all Claims,  whether known or
unknown, to the extent that any such Claim directly or indirectly arises out of,
is based upon or is in any manner connected with any Prior Related Event. "Prior
Related Event" means any transaction,  event,  circumstance,  action, failure to
act,  occurrence of any type or sort, whether known or unknown,  which occurred,
existed, was taken, was permitted or begun in accordance with, pursuant to or by
virtue of: (a) any of the terms of any Loan Document or this Amendment,  (b) any
actions,  transactions,  matters or circumstances  related hereto or to any Loan
Document,  (c) the conduct of the relationship  between any Lender Party and the
Borrower  and its  Subsidiaries,  or (d) any other  actions or  inactions by any
Lender Party, in each case on or prior to the Effective Date.

     9. Continuing Effect of Credit Agreement;  Reaffirmation of Loan Documents.
The  provisions  of the Credit  Agreement (as amended by this  Amendment)  shall
remain in full  force and  effect in  accordance  with its terms  following  the
effectiveness of this Amendment.  Except as expressly amended hereby, all of the
provisions of the Credit Agreement are ratified and confirmed. The existing Loan
Documents,  except as amended by this Amendment,  shall remain in full force and
effect,  and each of them is hereby  ratified  and  confirmed  by the  Borrower,
Lenders and the Administrative Agent.

     10. One Agreement;  References;  Fax Signature.  The Credit  Agreement,  as
amended by this Amendment, will be construed as one agreement. Each reference in

                                       5


the Credit Agreement to "this Agreement",  "hereunder",  "hereof",  "herein", or
words of like import  shall mean and be a reference  to the Credit  Agreement as
amended hereby,  and each reference to the Credit Agreement in any Loan Document
or any other  document,  instrument or agreement  executed  and/or  delivered in
connection with the Credit Agreement shall mean and be a reference to the Credit
Agreement  as  amended  hereby.  This  Amendment  may  be  signed  by  facsimile
signatures  or  other  electronic  delivery  of an  image  file  reflecting  the
execution hereof, and if so signed, (a) may be relied on by each party as if the
document were a manually  signed  original and (b) will be binding on each party
for all purposes.

     11. No Implied Consent or Waiver.  This Amendment shall not be construed as
consent to the departure  from, or a waiver of the terms and  conditions of, the
Credit Agreement except as expressly set forth herein.

     12.  Captions.  The  headings to the Sections of this  Amendment  have been
inserted  for  convenience  of  reference  only and  shall in no way  modify  or
restrict any provisions hereof or be used to construe any such provisions.

     13. Counterparts.  This Amendment may be executed in multiple counterparts,
each of which shall be an original but all of which  together  shall  constitute
one and the same instrument.

     14. Entire Agreement. This Amendment sets forth the entire agreement of the
parties with respect to the subject  matter of this Amendment and supersedes all
previous  understandings,  written or oral, in respect of this Amendment.  At no
time shall the prior or subsequent course of conduct by the Borrower, Lenders or
the  Administrative  Agent  directly or  indirectly  limit,  impair or otherwise
adversely  affect any of the parties' rights or remedies in connection with this
Amendment  or any of the  documents,  instruments  and  agreements  executed  in
connection herewith, as Lenders, the Administrative Agent and the Borrower agree
that this  Amendment  shall only be amended by written  instruments  executed by
Lenders,  the Administrative  Agent and the Borrower.  Except to the extent that
the Loan  Documents are  expressly  amended by this  Amendment,  if there is any
conflict,  ambiguity, or inconsistency,  in the Administrative Agent's judgment,
between the terms of this  Amendment and any of the other Loan  Documents,  then
the applicable terms and provisions,  in the  Administrative  Agent's  judgment,
providing Lenders and the  Administrative  Agent with greater rights,  remedies,
powers, privileges, or benefits will control.

     15.  Governing Law;  Severability.  This Amendment shall be governed by and
construed in accordance with the internal laws of the State of Colorado (without
regard to its  conflicts of law  principles).  If any term of this  Amendment is
found invalid under Colorado law or laws of mandatory  application by a court of
competent  jurisdiction,  the invalid term will be considered excluded from this
Amendment and will not invalidate the remaining terms of this Amendment.

     16.  WAIVER OF JURY TRIAL.  THE  BORROWER,  LENDERS AND THE  ADMINISTRATIVE
AGENT  EACH  WAIVE  TRIAL BY JURY WITH  RESPECT TO ANY  ACTION,  CLAIM,  SUIT OR

                                       6


PROCEEDING IN RESPECT OF OR ARISING OUT OF THIS AMENDMENT, ANY OF THE OTHER LOAN
DOCUMENTS, OR THE TRANSACTIONS CONTEMPLATED HEREBY.

                            [signature page follows]

                                       7


     The parties have caused this Amendment to be duly executed and delivered as
of the day and year first above written.

THE BORROWER:                             SYNERGY RESOURCES CORPORATION


                                          By:    /s/ Frank L. Jennings
                                                 -----------------------------
                                          Name:  Frank L. Jennings
                                          Title: Chief Financial Officer


ADMINISTRATIVE AGENT:                     COMMUNITY BANKS OF
                                          COLORADO,
                                          as Administrative Agent


                                          By:    /s/ Sarah Burchett
                                                 ------------------------------
                                          Name:  Sarah Burchett
                                          Title: Vice President


LENDERS:                                  COMMUNITY BANKS OF
                                          COLORADO,
                                          as a Lender


                                          By:    /s/ Sarah Burchett
                                                 ------------------------------
                                          Name:  Sarah Burchett
                                          Title: Vice President


                                          COBIZ BANK, A COLORADO CORPORATION,
                                          DBA COLORADO BUSINESS BANK,
                                          as a Lender


                                          By:    /s/ Douglas K. Derks
                                                 ------------------------------
                                          Name:  Douglas K. Derks
                                          Title: Senior Vice President

                                       8


                                          AMEGY BANK NATIONAL ASSOCIATION,
                                          as a Lender


                                          By:    /s/ Kevin Donaldson
                                                 ------------------------------
                                          Name:  Kevin Donaldson
                                          Title  Senior Vice President



                                          SUNTRUST BANK,
                                          as a Lender


                                          By:    /s/ Chulley Bogle
                                                 ------------------------------
                                          Name:  Chulley Bogle
                                          Title: Vice President



                                          KEYBANK NATIONAL ASSOCIATION,
                                          as a Lender


                                          By:    /s/ George E. McKean
                                                 ------------------------------
                                          Name:  George E. McKean
                                          Title: Senior Vice President

                                       9


                                     ANNEX I
                         LIST OF MAXIMUM CREDIT AMOUNTS

                        Aggregate Maximum Credit Amounts

                                                                  

         Name of Lender            Applicable     Maximum Credit      Amount of
                                   Percentage         Amount      Commitment on the
                                                                    Effective Date
-------------------------------------------------------------------------------------
Community Banks of Colorado       26.36363636%    $79,090,909.09    $29,000,000.00
-------------------------------------------------------------------------------------
Amegy Bank National Association   23.63636364%    $70,909,090.91    $26,000,000.00
-------------------------------------------------------------------------------------
CoBiz Bank, a Colorado
corporation, dba Colorado
Business                           9.09090909%    $27,272,727.27    $10,000,000.00
Bank
-------------------------------------------------------------------------------------
SunTrust Bank                     20.45454545%    $61,363,636.36    $22,500,000.00
-------------------------------------------------------------------------------------
Key Bank National Association     20.45454545%    $61,363,636.36    $22,500,000.00
-------------------------------------------------------------------------------------
             TOTAL               100.0000000000% $ 300,000,000.00  $ 110,000,000.00
-------------------------------------------------------------------------------------




                                       10



                                 PROMISSORY NOTE

$79,090,909.09                               Original Note:  November 28, 2012
                               First Amendment and Restatement:  June 28, 2013
                          Second Amendment and Restatement:  December 20, 2013
                                Third Amendment and Restatement:  June 3, 2014

FOR VALUE RECEIVED,  Synergy Resources Corporation,  a Colorado corporation (the
"Borrower"),  hereby promises to pay to Community Banks of Colorado,  a division
of NBH Bank, N.A. (the "Lender," and, in its capacity as  administrative  agent,
the  "Administrative  Agent"),  or its assigns,  at 7800 E.  Orchard,  Greenwood
Village,  Colorado  80111,  the principal  sum of  Seventy-Nine  Million  Ninety
Thousand Nine Hundred Nine and 09/100 dollars  ($79,090,909.09)  (or such lesser
amount as shall equal the aggregate unpaid principal amount of the Loans made by
the Lender to the Borrower under the Credit Agreement,  as hereinafter defined),
in lawful  money of the United  States of America and in  immediately  available
funds,  on the  dates  and in  the  principal  amounts  provided  in the  Credit
Agreement, and to pay interest on the unpaid principal amount of each such Loan,
at such office,  in like money and funds, for the period  commencing on the date
of such Loan until  such Loan shall be paid in full,  at the rates per annum and
on the dates provided in the Credit  Agreement.  This Note amends,  restates and
supersedes in its entirety  Borrower's  Promissory Note dated November 28, 2012,
payable to the order of Lender in the original  principal amount of $70,212,750,
as amended and restated by that certain  Promissory Note dated June 28, 2013 and
by that Promissory Note dated December 20, 2013 (the "Existing Note"). This Note
is given in substitution for, but not in payment of, the Existing Note.

     The date, amount, Type, interest rate, Interest Period and maturity of each
Loan made by the Lender to the Borrower, and each payment made on account of the
principal  thereof,  shall be recorded by the Lender on its books and,  prior to
any  transfer  of this Note,  may be  endorsed  by the  Lender on the  schedules
attached hereto or any continuation thereof or on any separate record maintained
by the Lender.  Failure to make any such notation or to attach a schedule  shall
not affect any Lender's or the  Borrower's  rights or  obligations in respect of
such Loans or affect the validity of such transfer by any Lender of this Note.

     This Note is one of the  Notes  referred  to in the  Amended  and  Restated
Credit  Agreement  dated as of  November  28,  2012,  among  the  Borrower,  the
Administrative Agent, and the other lenders signatory thereto, as such agreement
has been amended by that certain First Amendment to Credit Agreement dated as of
February 12, 2013, that certain Second Amendment to Credit Agreement dated as of
June 28, 2013, by that certain Third  Amendment to Credit  Agreement dated as of
December 20, 2013 and by that certain Fourth Amendment to Credit Agreement dated
as of June 3, 2014 (as the same may be amended,  supplemented  or restated  from
time to time,  the  "Credit  Agreement").  The  Lender is a party to the  Credit
Agreement  and  this  Note  evidences  Loans  made  by  the  Lender  thereunder.
Capitalized  terms used in this Note have the  respective  meanings  assigned to
them in the Credit Agreement.

     This  Note (a) is  issued  pursuant  to,  and is  subject  to the terms and
conditions  set forth in, the Credit  Agreement  and is entitled to the benefits
provided for in the Credit  Agreement and the other Loan  Documents,  and (b) is

                                       1


secured by and  entitled to the  benefits of certain  Security  Instruments  (as
identified and defined in the Credit  Agreement).  The Credit Agreement provides
for the acceleration of the maturity of this Note upon the occurrence of certain
events, for prepayments of Loans upon the terms and conditions specified therein
and other provisions relevant to this Note.

     If this Note is placed in the hands of an  attorney  for  collection  after
default, or if all or any part of the indebtedness represented hereby is proved,
established or collected in any court or in any bankruptcy, receivership, debtor
relief,  probate  or  other  court  proceedings,  the  Borrower  agrees  to  pay
reasonable attorneys' fees and collection costs to the holder hereof in addition
to the principal and interest payable hereunder.

     The Borrower and all endorsers, sureties and guarantors of this Note hereby
severally  waive  demand,  presentment,  notice of demand  and of  dishonor  and
nonpayment  of this Note,  protest,  notice of protest,  notice of  intention to
accelerate the maturity of this Note,  declaration or notice of  acceleration of
the  maturity of this Note,  diligence in  collecting,  the bringing of any suit
against  any party and any notice of or  defense  on account of any  extensions,
renewals, partial payments or changes in any manner of or in this Note or in any
of its terms,  provisions and covenants, or any releases or substitutions of any
security,  or any delay,  indulgence  or other act of any  trustee or any holder
hereof, whether before or after maturity.

     In no event shall the interest  payable under this Note,  whether before or
after maturity,  exceed the maximum amount of interest which,  under  applicable
law, may be contracted for, charged,  or received on this Note, and this Note is
expressly  made subject to the  provisions  of the Credit  Agreement  which more
fully set out the limitations on how interest accrues hereon.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE  WITH, THE LAWS
OF THE STATE OF COLORADO.

                                    SYNERGY RESOURCES CORPORATION



                                    By:    /s/ Frank L. Jennings
                                           -----------------------------------
                                    Name:  Frank L. Jennings
                                    Title: Chief Financial Officer

                                       2


                                 PROMISSORY NOTE

$27,272,727.27                               Original Note:  November 28, 2012
                               First Amendment and Restatement:  June 28, 2013
                          Second Amendment and Restatement:  December 20, 2013
                                Third Amendment and Restatement:  June 3, 2014

FOR VALUE RECEIVED,  Synergy Resources Corporation,  a Colorado corporation (the
"Borrower"),  hereby promises to pay to CoBiz Bank, a Colorado corporation,  dba
Colorado Business Bank (the "Lender"),  or its assigns,  at the principal office
of  Community  Banks  of  Colorado,   a  division  of  NBH  Bank,  N.A.  (,  the
"Administrative Agent"), or its assigns, at 7800 E. Orchard,  Greenwood Village,
Colorado  80111,   the  principal  sum  of  Twenty-Seven   Million  Two  Hundred
Seventy-Two   Thousand   Seven   Hundred   Twenty-Seven   and   27/100   dollars
($27,272,727.27)  (or such  lesser  amount as shall equal the  aggregate  unpaid
principal  amount of the Loans  made by the  Lender  to the  Borrower  under the
Credit Agreement,  as hereinafter defined), in lawful money of the United States
of America and in immediately available funds, on the dates and in the principal
amounts  provided  in the Credit  Agreement,  and to pay  interest on the unpaid
principal amount of each such Loan, at such office, in like money and funds, for
the period  commencing on the date of such Loan until such Loan shall be paid in
full, at the rates per annum and on the dates provided in the Credit  Agreement.
This Note amends,  restates and supersedes in its entirety Borrower's Promissory
Note dated  November  28,  2012,  payable to the order of Lender in the original
principal  amount of  $31,914,900,  as  amended  and  restated  by that  certain
Promissory  Note dated June 28, 2013 and by that  Promissory Note dated December
20, 2013 (the "Existing Note").  This Note is given in substitution for, but not
in payment of, the Existing Note.

     The date, amount, Type, interest rate, Interest Period and maturity of each
Loan made by the Lender to the Borrower, and each payment made on account of the
principal  thereof,  shall be recorded by the Lender on its books and,  prior to
any  transfer  of this Note,  may be  endorsed  by the  Lender on the  schedules
attached hereto or any continuation thereof or on any separate record maintained
by the Lender.  Failure to make any such notation or to attach a schedule  shall
not affect any Lender's or the  Borrower's  rights or  obligations in respect of
such Loans or affect the validity of such transfer by any Lender of this Note.

     This Note is one of the  Notes  referred  to in the  Amended  and  Restated
Credit  Agreement  dated as of  November  28,  2012,  among  the  Borrower,  the
Administrative Agent, and the other lenders signatory thereto, as such agreement
has been amended by that certain First Amendment to Credit Agreement dated as of
February 12, 2013, that certain Second Amendment to Credit Agreement dated as of
June 28, 2013, by that certain Third  Amendment to Credit  Agreement dated as of
December 20, 2013 and by that certain Fourth Amendment to Credit Agreement dated
as of June 3, 2014 (as the same may be amended,  supplemented  or restated  from
time to time,  the  "Credit  Agreement").  The  Lender is a party to the  Credit
Agreement  and  this  Note  evidences  Loans  made  by  the  Lender  thereunder.
Capitalized  terms used in this Note have the  respective  meanings  assigned to
them in the Credit Agreement.

     This  Note (a) is  issued  pursuant  to,  and is  subject  to the terms and
conditions  set forth in, the Credit  Agreement  and is entitled to the benefits

                                       1


provided for in the Credit  Agreement and the other Loan  Documents,  and (b) is
secured by and  entitled to the  benefits of certain  Security  Instruments  (as
identified and defined in the Credit  Agreement).  The Credit Agreement provides
for the acceleration of the maturity of this Note upon the occurrence of certain
events, for prepayments of Loans upon the terms and conditions specified therein
and other provisions relevant to this Note.

     If this Note is placed in the hands of an  attorney  for  collection  after
default, or if all or any part of the indebtedness represented hereby is proved,
established or collected in any court or in any bankruptcy, receivership, debtor
relief,  probate  or  other  court  proceedings,  the  Borrower  agrees  to  pay
reasonable attorneys' fees and collection costs to the holder hereof in addition
to the principal and interest payable hereunder.

     The Borrower and all endorsers, sureties and guarantors of this Note hereby
severally  waive  demand,  presentment,  notice of demand  and of  dishonor  and
nonpayment  of this Note,  protest,  notice of protest,  notice of  intention to
accelerate the maturity of this Note,  declaration or notice of  acceleration of
the  maturity of this Note,  diligence in  collecting,  the bringing of any suit
against  any party and any notice of or  defense  on account of any  extensions,
renewals, partial payments or changes in any manner of or in this Note or in any
of its terms,  provisions and covenants, or any releases or substitutions of any
security,  or any delay,  indulgence  or other act of any  trustee or any holder
hereof, whether before or after maturity.

     In no event shall the interest  payable under this Note,  whether before or
after maturity,  exceed the maximum amount of interest which,  under  applicable
law, may be contracted for, charged,  or received on this Note, and this Note is
expressly  made subject to the  provisions  of the Credit  Agreement  which more
fully set out the limitations on how interest accrues hereon.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE  WITH, THE LAWS
OF THE STATE OF COLORADO.

     Borrower  Certification:  The undersigned,  as a duly authorized officer of
Borrower,  hereby  certifies to Lender that no Principal  (as defined  below) of
Borrower has been  convicted  of, or pled no contest to, a felony under state or
federal law (excluding  crimes related to traffic or motor vehicle  offenses) or
to  any  other  crime  that  requires  identification  in  any  registry  and/or
notification  program  maintained  by any  federal  or state  jurisdiction.  For
purposes of this Note, the term "Principal"  means and includes each director of
Borrower,  (each of the five most highly  compensated  executives or officers of
Borrower,  and each natural person who is a direct or indirect  holder of 20% or
more of the capital stock or stock equivalents of Borrower.

                                    SYNERGY RESOURCES CORPORATION



                                    By:    /s/ Frank L. Jennings
                                           -----------------------------------
                                    Name:  Frank L. Jennings
                                    Title: Chief Financial Officer

                                       2


                                PROMISSORY NOTE

$70,909,090.91                               Original Note:  November 28, 2012
                               First Amendment and Restatement:  June 28, 2013
                          Second Amendment and Restatement:  December 20, 2013
                                Third Amendment and Restatement:  June 3, 2014

FOR VALUE RECEIVED,  Synergy Resources Corporation,  a Colorado corporation (the
"Borrower"),  hereby  promises to pay to Amegy Bank  National  Association  (the
"Lender"),  or its  assigns,  at the  principal  office  of  Community  Banks of
Colorado,  a division of NBH Bank,  N.A. (the  "Administrative  Agent"),  or its
assigns,  at 7800 E. Orchard,  Greenwood Village,  Colorado 80111, the principal
sum of Seventy  Million Ninety  Hundred Nine Thousand  Ninety and 91/100 dollars
($70,909,090.91)  (or such  lesser  amount as shall equal the  aggregate  unpaid
principal  amount of the Loans  made by the  Lender  to the  Borrower  under the
Credit Agreement,  as hereinafter defined), in lawful money of the United States
of America and in immediately available funds, on the dates and in the principal
amounts  provided  in the Credit  Agreement,  and to pay  interest on the unpaid
principal amount of each such Loan, at such office, in like money and funds, for
the period  commencing on the date of such Loan until such Loan shall be paid in
full, at the rates per annum and on the dates provided in the Credit  Agreement.
This Note amends,  restates and supersedes in its entirety Borrower's Promissory
Note dated  November  28,  2012,  payable to the order of Lender in the original
principal  amount of  $47,872,350,  as  amended  and  restated  by that  certain
Promissory  Note dated June 28, 2013 and by that  Promissory Note dated December
20, 2013 (the "Existing Note").  This Note is given in substitution for, but not
in payment of, the Existing Note.

     The date, amount, Type, interest rate, Interest Period and maturity of each
Loan made by the Lender to the Borrower, and each payment made on account of the
principal  thereof,  shall be recorded by the Lender on its books and,  prior to
any  transfer  of this Note,  may be  endorsed  by the  Lender on the  schedules
attached hereto or any continuation thereof or on any separate record maintained
by the Lender.  Failure to make any such notation or to attach a schedule  shall
not affect any Lender's or the  Borrower's  rights or  obligations in respect of
such Loans or affect the validity of such transfer by any Lender of this Note.

     This Note is one of the  Notes  referred  to in the  Amended  and  Restated
Credit  Agreement  dated as of  November  28,  2012,  among  the  Borrower,  the
Administrative Agent, and the other lenders signatory thereto, as such agreement
has been amended by that certain First Amendment to Credit Agreement dated as of
February 12, 2013, that certain Second Amendment to Credit Agreement dated as of
June 28, 2013, by that certain Third  Amendment to Credit  Agreement dated as of
December 20, 2013 and by that certain Fourth Amendment to Credit Agreement dated
as of June 3, 2014 (as the same may be amended,  supplemented  or restated  from
time to time,  the  "Credit  Agreement").  The  Lender is a party to the  Credit
Agreement  and  this  Note  evidences  Loans  made  by  the  Lender  thereunder.
Capitalized  terms used in this Note have the  respective  meanings  assigned to
them in the Credit Agreement.

     This  Note (a) is  issued  pursuant  to,  and is  subject  to the terms and
conditions  set forth in, the Credit  Agreement  and is entitled to the benefits

                                       1


provided for in the Credit  Agreement and the other Loan  Documents,  and (b) is
secured by and  entitled to the  benefits of certain  Security  Instruments  (as
identified and defined in the Credit  Agreement).  The Credit Agreement provides
for the acceleration of the maturity of this Note upon the occurrence of certain
events, for prepayments of Loans upon the terms and conditions specified therein
and other provisions relevant to this Note.

     If this Note is placed in the hands of an  attorney  for  collection  after
default, or if all or any part of the indebtedness represented hereby is proved,
established or collected in any court or in any bankruptcy, receivership, debtor
relief,  probate  or  other  court  proceedings,  the  Borrower  agrees  to  pay
reasonable attorneys' fees and collection costs to the holder hereof in addition
to the principal and interest payable hereunder.

     The Borrower and all endorsers, sureties and guarantors of this Note hereby
severally  waive  demand,  presentment,  notice of demand  and of  dishonor  and
nonpayment  of this Note,  protest,  notice of protest,  notice of  intention to
accelerate the maturity of this Note,  declaration or notice of  acceleration of
the  maturity of this Note,  diligence in  collecting,  the bringing of any suit
against  any party and any notice of or  defense  on account of any  extensions,
renewals, partial payments or changes in any manner of or in this Note or in any
of its terms,  provisions and covenants, or any releases or substitutions of any
security,  or any delay,  indulgence  or other act of any  trustee or any holder
hereof, whether before or after maturity.

     In no event shall the interest  payable under this Note,  whether before or
after maturity,  exceed the maximum amount of interest which,  under  applicable
law, may be contracted for, charged,  or received on this Note, and this Note is
expressly  made subject to the  provisions  of the Credit  Agreement  which more
fully set out the limitations on how interest accrues hereon.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE  WITH, THE LAWS
OF THE STATE OF COLORADO.

                                    SYNERGY RESOURCES CORPORATION



                                    By:    /s/ Frank L. Jennings
                                           -----------------------------------
                                    Name:  Frank L. Jennings
                                    Title: Chief Financial Officer

                                       2


                                PROMISSORY NOTE

$61,363,636.36                               Original Note:  December 20, 2013
                                First Amendment and Restatement:  June 3, 2014

FOR VALUE RECEIVED,  Synergy Resources Corporation,  a Colorado corporation (the
"Borrower"),  hereby  promises to pay to SunTrust  Bank (the  "Lender"),  or its
assigns,  at the principal office of Community Banks of Colorado,  a division of
NBH Bank, N.A. (the "Administrative Agent"), or its assigns, at 7800 E. Orchard,
Greenwood Village,  Colorado 80111, the principal sum of Sixty-One Million Three
Hundred   Sixty-Three   Thousand  Six  Hundred  Thirty-Six  and  36/100  dollars
($61,363,636.36)  (or such  lesser  amount as shall equal the  aggregate  unpaid
principal  amount of the Loans  made by the  Lender  to the  Borrower  under the
Credit Agreement,  as hereinafter defined), in lawful money of the United States
of America and in immediately available funds, on the dates and in the principal
amounts  provided  in the Credit  Agreement,  and to pay  interest on the unpaid
principal amount of each such Loan, at such office, in like money and funds, for
the period  commencing on the date of such Loan until such Loan shall be paid in
full, at the rates per annum and on the dates provided in the Credit  Agreement.
This Note amends,  restates and supersedes in its entirety Borrower's Promissory
Note dated  December  20,  2013,  payable to the order of Lender in the original
principal  amount of $25,000,000  (the "Existing  Note").  This Note is given in
substitution for, but not in payment of, the Existing Note.

     The date, amount, Type, interest rate, Interest Period and maturity of each
Loan made by the Lender to the Borrower, and each payment made on account of the
principal  thereof,  shall be recorded by the Lender on its books and,  prior to
any  transfer  of this Note,  may be  endorsed  by the  Lender on the  schedules
attached hereto or any continuation thereof or on any separate record maintained
by the Lender.  Failure to make any such notation or to attach a schedule  shall
not affect any Lender's or the  Borrower's  rights or  obligations in respect of
such Loans or affect the validity of such transfer by any Lender of this Note.

     This Note is one of the  Notes  referred  to in the  Amended  and  Restated
Credit  Agreement  dated as of  November  28,  2012,  among  the  Borrower,  the
Administrative Agent, and the other lenders signatory thereto, as such agreement
has been amended by that certain First Amendment to Credit Agreement dated as of
February 12, 2013, that certain Second Amendment to Credit Agreement dated as of
June 28, 2013, by that certain Third  Amendment to Credit  Agreement dated as of
December 20, 2013 and by that certain Fourth Amendment to Credit Agreement dated
as of June 3, 2014 (as the same may be amended,  supplemented  or restated  from
time to time,  the  "Credit  Agreement").  The  Lender is a party to the  Credit
Agreement  and  this  Note  evidences  Loans  made  by  the  Lender  thereunder.
Capitalized  terms used in this Note have the  respective  meanings  assigned to
them in the Credit Agreement.

     This  Note (a) is  issued  pursuant  to,  and is  subject  to the terms and
conditions  set forth in, the Credit  Agreement  and is entitled to the benefits
provided for in the Credit  Agreement and the other Loan  Documents,  and (b) is
secured by and  entitled to the  benefits of certain  Security  Instruments  (as
identified and defined in the Credit  Agreement).  The Credit Agreement provides
for the acceleration of the maturity of this Note upon the occurrence of certain

                                       1


events, for prepayments of Loans upon the terms and conditions specified therein
and other provisions relevant to this Note.

     If this Note is placed in the hands of an  attorney  for  collection  after
default, or if all or any part of the indebtedness represented hereby is proved,
established or collected in any court or in any bankruptcy, receivership, debtor
relief,  probate  or  other  court  proceedings,  the  Borrower  agrees  to  pay
reasonable attorneys' fees and collection costs to the holder hereof in addition
to the principal and interest payable hereunder.

     The Borrower and all endorsers, sureties and guarantors of this Note hereby
severally  waive  demand,  presentment,  notice of demand  and of  dishonor  and
nonpayment  of this Note,  protest,  notice of protest,  notice of  intention to
accelerate the maturity of this Note,  declaration or notice of  acceleration of
the  maturity of this Note,  diligence in  collecting,  the bringing of any suit
against  any party and any notice of or  defense  on account of any  extensions,
renewals, partial payments or changes in any manner of or in this Note or in any
of its terms,  provisions and covenants, or any releases or substitutions of any
security,  or any delay,  indulgence  or other act of any  trustee or any holder
hereof, whether before or after maturity.

     In no event shall the interest  payable under this Note,  whether before or
after maturity,  exceed the maximum amount of interest which,  under  applicable
law, may be contracted for, charged,  or received on this Note, and this Note is
expressly  made subject to the  provisions  of the Credit  Agreement  which more
fully set out the limitations on how interest accrues hereon.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE  WITH, THE LAWS
OF THE STATE OF COLORADO.

                                    SYNERGY RESOURCES CORPORATION



                                    By:    /s/ Frank L. Jennings
                                           -----------------------------------
                                    Name:  Frank L. Jennings
                                    Title: Chief Financial Officer

                                       2


                                 PROMISSORY NOTE

$61,363,636.36                               Original Note:  December 20, 2013
                                First Amendment and Restatement:  June 3, 2014

FOR VALUE RECEIVED,  Synergy Resources Corporation,  a Colorado corporation (the
"Borrower"),  hereby  promises  to  pay to  KeyBank  National  Association  (the
"Lender"),  or its  assigns,  at the  principal  office  of  Community  Banks of
Colorado,  a division of NBH Bank,  N.A. (the  "Administrative  Agent"),  or its
assigns,  at 7800 E. Orchard,  Greenwood Village,  Colorado 80111, the principal
sum  of  Sixty-One  Million  Three  Hundred  Sixty-Three  Thousand  Six  Hundred
Thirty-Six and 36/100 dollars  ($61,363,636.36)  (or such lesser amount as shall
equal the aggregate  unpaid  principal amount of the Loans made by the Lender to
the Borrower  under the Credit  Agreement,  as hereinafter  defined),  in lawful
money of the United States of America and in immediately available funds, on the
dates and in the principal amounts provided in the Credit Agreement,  and to pay
interest on the unpaid  principal  amount of each such Loan, at such office,  in
like money and funds,  for the period  commencing on the date of such Loan until
such  Loan  shall be paid in full,  at the  rates  per  annum  and on the  dates
provided in the Credit Agreement.  This Note amends,  restates and supersedes in
its entirety Borrower's  Promissory Note dated December 20, 2013, payable to the
order of Lender in the original  principal  amount of $25,000,000 (the "Existing
Note").  This Note is given in  substitution  for,  but not in  payment  of, the
Existing Note.

     The date, amount, Type, interest rate, Interest Period and maturity of each
Loan made by the Lender to the Borrower, and each payment made on account of the
principal  thereof,  shall be recorded by the Lender on its books and,  prior to
any  transfer  of this Note,  may be  endorsed  by the  Lender on the  schedules
attached hereto or any continuation thereof or on any separate record maintained
by the Lender.  Failure to make any such notation or to attach a schedule  shall
not affect any Lender's or the  Borrower's  rights or  obligations in respect of
such Loans or affect the validity of such transfer by any Lender of this Note.

     This Note is one of the  Notes  referred  to in the  Amended  and  Restated
Credit  Agreement  dated as of  November  28,  2012,  among  the  Borrower,  the
Administrative Agent, and the other lenders signatory thereto, as such agreement
has been amended by that certain First Amendment to Credit Agreement dated as of
February 12, 2013, that certain Second Amendment to Credit Agreement dated as of
June 28, 2013, by that certain Third  Amendment to Credit  Agreement dated as of
December 20, 2013 and by that certain Fourth Amendment to Credit Agreement dated
as of June 3, 2014 (as the same may be amended,  supplemented  or restated  from
time to time,  the  "Credit  Agreement").  The  Lender is a party to the  Credit
Agreement  and  this  Note  evidences  Loans  made  by  the  Lender  thereunder.
Capitalized  terms used in this Note have the  respective  meanings  assigned to
them in the Credit Agreement.

     This  Note (a) is  issued  pursuant  to,  and is  subject  to the terms and
conditions  set forth in, the Credit  Agreement  and is entitled to the benefits
provided for in the Credit  Agreement and the other Loan  Documents,  and (b) is
secured by and  entitled to the  benefits of certain  Security  Instruments  (as
identified and defined in the Credit  Agreement).  The Credit Agreement provides
for the acceleration of the maturity of this Note upon the occurrence of certain

                                       1


events, for prepayments of Loans upon the terms and conditions specified therein
and other provisions relevant to this Note.

      If this Note is placed in the hands of an attorney for collection after
default, or if all or any part of the indebtedness represented hereby is proved,
established or collected in any court or in any bankruptcy, receivership, debtor
relief, probate or other court proceedings, the Borrower agrees to pay
reasonable attorneys' fees and collection costs to the holder hereof in addition
to the principal and interest payable hereunder.

     The Borrower and all endorsers, sureties and guarantors of this Note hereby
severally  waive  demand,  presentment,  notice of demand  and of  dishonor  and
nonpayment  of this Note,  protest,  notice of protest,  notice of  intention to
accelerate the maturity of this Note,  declaration or notice of  acceleration of
the  maturity of this Note,  diligence in  collecting,  the bringing of any suit
against  any party and any notice of or  defense  on account of any  extensions,
renewals, partial payments or changes in any manner of or in this Note or in any
of its terms,  provisions and covenants, or any releases or substitutions of any
security,  or any delay,  indulgence  or other act of any  trustee or any holder
hereof, whether before or after maturity.

     In no event shall the interest  payable under this Note,  whether before or
after maturity,  exceed the maximum amount of interest which,  under  applicable
law, may be contracted for, charged,  or received on this Note, and this Note is
expressly  made subject to the  provisions  of the Credit  Agreement  which more
fully set out the limitations on how interest accrues hereon.

     THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE  WITH, THE LAWS
OF THE STATE OF COLORADO.

                                    SYNERGY RESOURCES CORPORATION



                                    By:    /s/ Frank L. Jennings
                                           -----------------------------------
                                    Name:  Frank L. Jennings
                                    Title: Chief Financial Officer

                                       2


RECORDING REQUESTED BY AND      )
WHEN RECORDED RETURN TO:        )
                                )
                                )
Charles Bybee                   )
Faegre Baker Daniels LLP        )
3200 Wells Fargo Center         )
1700 Lincoln Street             )
Denver, Colorado, 80203         )






       THIRD AMENDED AND RESTATED DEED OF TRUST, MORTGAGE, FIXTURE FILING,
     ASSIGNMENT OF AS-EXTRACTED COLLATERAL, SECURITY AGREEMENT AND FINANCING
                                    STATEMENT


                                      FROM


                         SYNERGY RESOURCES CORPORATION,



                                  AS BORROWER,


                                       TO

                          COMMUNITY BANKS OF COLORADO,



                                AS SECURED PARTY



A CARBON,  PHOTOGRAPHIC,  FACSIMILE, OR OTHER REPRODUCTION OF THIS INSTRUMENT IS
SUFFICIENT AS A FINANCING STATEMENT.

THIS INSTRUMENT  CONTAINS  AFTER-ACQUIRED  PROPERTY  PROVISIONS,  SECURES FUTURE
ADVANCES AND OBLIGATIONS  ARISING FROM A REVOLVING  CREDIT  ARRANGEMENT (UP TO A
MAXIMUM PRINCIPAL AMOUNT OF $325,000,000), AND COVERS PROCEEDS OF COLLATERAL.

THIS INSTRUMENT COVERS OIL AND GAS,  AS-EXTRACTED  COLLATERAL,  AND THE ACCOUNTS
RELATED  THERETO,  WHICH WILL BE FINANCED AT THE  WELLHEADS OF THE WELL OR WELLS
LOCATED ON THE  PROPERTIES  DESCRIBED AS THE  MORTGAGED  PROPERTY  HEREIN.  THIS
INSTRUMENT   COVERS   GOODS  WHICH  ARE  OR  ARE  TO  BECOME   FIXTURES  ON  THE
REAL/IMMOVABLE  PROPERTY DESCRIBED HEREIN, AND IT IS TO BE FILED FOR RECORD AS A
FIXTURE FILING,  AMONG OTHER PLACES, IN THE REAL ESTATE OR COMPARABLE RECORDS OF
THE RECORDERS OF THE COUNTIES LISTED ON EXHIBIT A HERETO.

BORROWER  HAS AN INTEREST OF RECORD IN THE REAL  ESTATE AND  IMMOVABLE  PROPERTY
CONCERNED, WHICH INTEREST IS DESCRIBED IN SECTION 1.01 OF THIS INSTRUMENT.


                                TABLE OF CONTENTS

                                                                            Page


ARTICLE I Grant of Lien and Obligations Secured..............................3

   Section 1.01  Grant of Liens..............................................3
   Section 1.02  Grant of Security Interest..................................7
   Section 1.03  Real Property in Weld County Colorado.......................7
   Section 1.04  Real Property in Boulder County Colorado....................7
   Section 1.05  Obligations Secured.........................................7
   Section 1.06  Fixture Filing, As-extracted Collateral, Etc................9
   Section 1.07  Pro Rata Benefit............................................9
   Section 1.08  Defined Terms...............................................9
   Section 1.09  Certain Definitions........................................10

ARTICLE II Assignment of As-Extracted Collateral............................10

   Section 2.01  Assignment.................................................10
   Section 2.02  No Modification of Payment Obligations.....................11
   Section 2.03  Rights of Producers........................................12

ARTICLE III Representations, Warranties and Covenants.......................12

   Section 3.01  Title......................................................12
   Section 3.02  Perfected Liens; Defend Title; Further Assurances..........12
   Section 3.03  Further Assurances.........................................13
   Section 3.04  Not a Foreign Person.......................................14
   Section 3.05  Power to Create Lien and Security..........................14
   Section 3.06  Revenue and Cost Bearing Interest..........................14
   Section 3.07  Rentals Paid; Leases in Effect.............................14
   Section 3.08  Operation of Mortgaged Property, Etc.......................15
   Section 3.09  Operation By Third Parties.................................15
   Section 3.10  Abandon, Sales.............................................15
   Section 3.11  Instruments and Chattel Paper..............................16
   Section 3.12  Limitations  on  Modifications,  Waivers,  Extensions of
                 Agreements Giving Rise to Accounts.........................16
   Section 3.13  Insurance..................................................16
   Section 3.14  Further Identification of Collateral.......................16
   Section 3.15  Failure to Perform.........................................17

ARTICLE IV Rights and Remedies..............................................17

   Section 4.01  Event of Default...........................................17
   Section 4.02  Foreclosure by Advertisement and Sale......................17
   Section 4.03  Collections on Accounts, Etc...............................20
   Section 4.04  Proceeds...................................................21

                                       i


   Section 4.05  Agents.....................................................21
   Section 4.06  Judicial Foreclosure; Receivership.........................21
   Section 4.07  Foreclosure for Installments...............................22
   Section 4.08  Separate Sales.............................................22
   Section 4.09  Possession of Mortgaged Property and Collateral............23
   Section 4.10  Remedies Cumulative, Concurrent and Nonexclusive...........23
   Section 4.11  No Release of Obligations..................................23
   Section 4.12  No Impairment of Security..................................24
   Section 4.13  Release of and Resort to Collateral........................24
   Section 4.14  Waiver of Redemption,  Notice and Marshalling of Assets,
                 Etc........................................................24
   Section 4.15  Discontinuance of Proceedings..............................25
   Section 4.16  Application of Proceeds....................................25
   Section 4.17  Resignation of Operator....................................25
   Section 4.18  Indemnity..................................................25
   Section 4.19  Secured Party Not "Secured Party-In-Possession"............26

ARTICLE V Attorney-in-Fact..................................................26

   Section 5.01  Secured Party Attorney-In-Fact.............................26

ARTICLE VI Miscellaneous....................................................27

   Section 6.01  Instrument Construed as Mortgage, Etc; Perpetuities........27
   Section 6.02  Release of Mortgage........................................27
   Section 6.03  Severability...............................................27
   Section 6.04  Partial Releases...........................................27
   Section 6.05  Successors and Assigns of Parties..........................27
   Section 6.06  Satisfaction of Prior Encumbrance..........................27
   Section 6.07  Subrogation of Secured Party...............................28
   Section 6.08  Nature of Covenants........................................28
   Section 6.09  Notices....................................................28
   Section 6.10  Counterparts...............................................28
   Section 6.11  Governing Law..............................................28
   Section 6.12  Exculpation Provisions.....................................29
   Section 6.13  Terms Generally; Rules of Construction.....................29
   Section 6.14  Recording..................................................30
   Section 6.15  Application of Payments to Certain Obligations.............30
   Section 6.16  Financing Statement; Fixture Filing........................30



  Exhibit A.      Hydrocarbon Property

                                      ii



       THIRD AMENDED AND RESTATED DEED OF TRUST, MORTGAGE, FIXTURE FILING,
     ASSIGNMENT OF AS-EXTRACTED COLLATERAL, SECURITY AGREEMENT AND FINANCING
                                    STATEMENT


     This THIRD AMENDED AND RESTATED DEED OF TRUST,  MORTGAGE,  FIXTURE  FILING,
ASSIGNMENT  OF  AS-EXTRACTED   COLLATERAL,   SECURITY  AGREEMENT  AND  FINANCING
STATEMENT (this  "Agreement") dated as of June 3, 2014 (the "Effective Date") is
from SYNERGY RESOURCES CORPORATION, a Colorado corporation ("Borrower"),  and to
the Public  Trustee of Weld County,  Colorado  (the "Weld  Trustee")  and to the
Public Trustee of Boulder County,  Colorado (the "Boulder  Trustee" and together
with the Weld Trustee,  the  "Trustees"  and each  "Trustee") and to and for the
benefit of  COMMUNITY  BANKS OF  COLORADO,  a  division  of NBH Bank,  N.A.,  as
Collateral  Agent ("Secured  Party"),  for the benefit of itself and the Secured
Creditors (as defined below).

                               R E C I T A L S:

     A.  Borrower  and  Community  Banks of Colorado  formerly  known as Bank of
Choice,  a division of Bank  Midwest,  N.A. (in its capacity as lender under the
Existing Credit Agreement,  the "Predecessor  Lender"),  previously entered into
that  certain Loan  Agreement  effective  November 30, 2011,  as amended by that
Amendment #1 to Loan Agreement, dated as of April 23, 2012 and by that Amendment
#2 to Loan Agreement, dated as of October 18, 2012 (as amended, supplemented and
modified  prior  to  the  date  of  this  Agreement,   the  "Predecessor  Credit
Agreement"),  pursuant  to which the  Predecessor  Lender  made  loans and other
extensions of credit to Borrower.

     B. The indebtedness,  obligations and liabilities of Borrower arising under
the Predecessor  Credit  Agreement and the other Loan Documents  (solely in this
instance,  as defined in the Predecessor  Credit  Agreement)  (the  "Predecessor
Obligations"),  were secured by, among other things, that certain Deed of Trust,
Mortgage,  Security Agreement,  Financing Statement and Fixture Filing, dated as
of November 30, 2011, as amended by that Amendment of Deed of Trust,  Assignment
of Rents,  Security Agreement and Fixture Filing, dated as of April 23, 2012 and
by that Amendment of Deed of Trust,  Assignment of Rents, Security Agreement and
Fixture Filing, dated as of October 18, 2012 (as amended before the date of this
Agreement, the "Predecessor  Mortgage"),  by which Borrower granted liens on and
security  interests in certain properties to the Predecessor  Lender,  including
the Collateral (defined below).

     C.  Borrower,  the  Lenders  (as  defined  in the  Credit  Agreement),  and
Community  Banks of  Colorado,  in its  capacity  as  administrative  agent (the
"Administrative  Agent"),  amended and restated the Predecessor Credit Agreement
as of November 28, 2012 (such agreement,  the "Existing Credit Agreement") which
amended  and  restated in its  entirety  the  Predecessor  Credit  Agreement  to
provide,  among  other  things:  the  appointment  of  Administrative  Agent  as
administrative  agent, the refinancing of the Predecessor Credit Agreement,  and
for the  extension  of  credit  for  general  corporate  purposes  of  Borrower,
including, without limitation,  working capital and capital expenditures related
to the acquisition, development and production of oil and gas properties.

                                       1


     D. The Existing Credit  Agreement has been amended by that First Amendment,
dated as of February 12, 2012, that Second Amendment, dated as of June 28, 2013,
that Third  Amendment  dated as of December 20, 2013 and that Fourth  Amendment,
dated as of June 3,  2014  (the  "Fourth  Amendment";  and the  Existing  Credit
Agreement, as modified, amended, supplemented or restated from time to time, the
"Credit Agreement").  The indebtedness,  obligations and liabilities of Borrower
arising under the Credit  Agreement and the other Loan  Documents (as defined in
the Credit Agreement) shall be referred to as the "Existing Obligations".

E. Effective as of November 28, 2012, the parties hereto  acknowledge  and agree
that (a) the Predecessor  Mortgage was amended and restated as set forth in that
Amended and Restated  Deed of Trust,  Mortgage,  Fixture  Filing,  Assignment of
As-Extracted Collateral,  Security Agreement and Financing Statement dated as of
November 28, 2012,  and recorded in the office of the clerk and recorder for (i)
Weld County,  Colorado,  on December 3, 2012, at Reception  Number 3892604,  and
(ii) Boulder County, Colorado, on December 3, 2012, at Reception Number 03271548
(as amended, supplemented, restated or otherwise modified from time to time, the
"Existing  Mortgage").  The  Existing  Mortgage  was  amended  by (i) that First
Amendment  of Amended and  Restated  Deed of Trust,  Mortgage,  Fixture  Filing,
Assignment  of  As-Extracted   Collateral,   Security  Agreement  and  Financing
Statement  dated  June 28,  2013,  and  recorded  in the office of the clerk and
recorder  for Weld  County,  Colorado,  on July 3,  2013,  at  Reception  Number
3945393,  and (ii) that Second  Amendment of Amended and Restated Deed of Trust,
Mortgage,  Fixture  Filing,  Assignment  of  As-Extracted  Collateral,  Security
Agreement and Financing  Statement  dated December 20, 2013, and recorded in the
office of the clerk and recorder for Weld County,  Colorado, on January 8, 2014,
at  Reception  Number  3988852 and in the office of the clerk and  recorder  for
Boulder County,  Colorado,  on January 8, 2014 at Reception Number 03361154 (the
"Second  Amendment").   In  connection  with  the  Existing  Mortgage,  (i)  the
Predecessor  Obligations  were not  satisfied  or  extinguished  but rather were
carried forward as set forth in the Credit Agreement and Notes executed pursuant
thereto,  (ii) the liens created and evidenced by the Predecessor  Mortgage were
not released,  extinguished or otherwise  impaired,  but continued to secure the
Existing  Obligations  with the same priority of lien and (iii) Borrower granted
liens on and security  interests  in certain  properties  to the  Administrative
Agent, including the Collateral.

     F. Borrower,  the Lenders BP Energy Company, the Administrative  Agent, and
Community Banks of Colorado in its capacity as collateral agent (the "Collateral
Agent")  for the  benefit  and on  behalf of the  Secured  Parties  (as  defined
therein) have entered into that Collateral Agency and  Intercreditor  Agreement,
dated as of December 20, 2013 (the "Intercreditor Agreement").

     G. Borrower and certain  Secured Hedging  Counterparties  have or may enter
into certain  Secured Hedging  Agreements  (collectively,  the "Secured  Hedging
Agreements"). The Credit Agreement, the Secured Hedging Agreements and the other
Loan Documents are collectively  referred to herein as the "Secured  Transaction
Documents").

     H. Secured Party and the other Secured  Creditors  have  conditioned  their
obligations  under the Secured  Transaction  Documents  upon the  execution  and

                                       2


delivery by Borrower of this  Agreement,  and  Borrower has agreed to enter into
this Agreement to secure the Obligations as defined herein.

     I.  Effective as of the date hereof,  the parties  hereto  acknowledge  and
agree that (a) the Existing  Mortgage is being amended and restated as set forth
in this  Agreement,  (b) the  Existing  Obligations  are not being  satisfied or
extinguished  but  rather are being  carried  forward as set forth in the Credit
Agreement and Notes executed thereto, and (c) the liens created and evidenced by
the Existing Mortgage shall not be released, extinguished or otherwise impaired,
but shall continue to secure such carried forward  indebtedness  and obligations
with the same priority of lien.

     J. In connection  with Secured  Party's  appointment  as  collateral  agent
contemporaneous with the Second Amendment and under the Intercreditor Agreement,
the  Administrative  Agent  agreed to assign  all liens and  security  interests
securing the payment of the Existing Obligations, including, without limitation,
the Existing Mortgage,  to Secured Party in its capacity as Collateral Agent for
the ratable benefit of each Lender (as provided in the Credit Agreement) and the
other Secured Creditors.

     K. In  furtherance of the foregoing,  (a) the Lenders,  the  Administrative
Agent Secured Party and Borrower desire  acknowledge and agree to the assignment
of record of all right,  title and interest of the  Administrative  Agent in, to
and under the Existing Mortgage,  to Secured Party in its capacity as Collateral
Agent  for the  ratable  benefit  of each  Lender  (as  provided  in the  Credit
Agreement) and the other Secured  Creditors,  and (b) Secured Party and Borrower
acknowledge  and  agree  that  certain  of the  rights  and  obligations  of the
Administrative  Agent under the Existing  Mortgage have been assigned to Secured
Party in its capacity as Collateral Agent for the ratable benefit of each Lender
(as provided in the Credit  Agreement)  and the other Secured  Creditors and the
inclusion of certain  properties as additional  Mortgaged Property to secure the
payment  and  performance  of the  Obligations  (as defined  below),  including,
without limitation,  the obligations and indebtedness otherwise described in the
Existing Mortgage and the Credit Agreement.

     L. Now, therefore,  in order to comply with the terms and conditions of the
Credit Agreement and for other good and valuable consideration,  the receipt and
sufficiency  of which are  hereby  acknowledged,  Borrower  hereby  agrees  with
Secured Party as follows:

                                   ARTICLE I
                      Grant of Lien and Obligations Secured

     Section 1.01 Grant of Liens. To secure the prompt and complete  payment and
performance  when due  (whether  at the  stated  maturity,  by  acceleration  or
otherwise) of the  Obligations  (as defined  herein) and the  performance of the
covenants and  obligations  herein  contained,  Borrower does by these  presents
hereby GRANT, BARGAIN, SELL, ASSIGN, MORTGAGE,  TRANSFER and CONVEY unto Secured
Party,  WITH  POWER OF SALE and  right of entry and  possession  for the use and
benefit  of  Secured  Party and the  Secured  Creditors,  the real and  personal
property,  rights,  titles,  interests and estates  described in Section 1.01(a)
through (h) (collectively called the "Mortgaged Property"):

                                       3


          (a) All rights,  titles,  interests and estates now owned or hereafter
     acquired  by  Borrower  (including  all  royalty,  net  revenue and working
     interests)  in and to (1) the oil and gas leases  and/or  oil,  gas,  other
     liquid or gaseous  hydrocarbon  leases,  and other mineral leases and other
     interests  and estates and lands and premises  covered or affected  thereby
     which are described on Exhibit A hereto (the "Subject Leases"), and (2) the
     wells (whether oil, gas or otherwise) identified on Exhibit A (the "Subject
     Wells")  together  with all lands that are located  within the Spacing Unit
     (as  defined  below) for each  Subject  Well (all such  rights,  titles and
     estates described in this clause (a) being collectively  referred to as the
     "Hydrocarbon Property").

          (b) All rights,  titles,  interests and estates now owned or hereafter
     acquired by Borrower in and to (1) the properties  now or hereafter  pooled
     or unitized with the Hydrocarbon  Property;  (2) all presently  existing or
     future  unitization,   communitization,  spacing,  pooling  agreements  and
     declarations  of pooled  units and the units  created  thereby  (including,
     without limitation, all units created under orders,  regulations,  rules or
     other  official acts of any federal,  state or other  governmental  body or
     agency  having  jurisdiction  and any units  created  solely among  working
     interest  owners  pursuant to  operating  agreements  or  otherwise)  which
     pertain  to  all or  any  portion  of the  Hydrocarbon  Property;  (3)  all
     operating  agreements,   production  sales  or  other  contracts,   farmout
     agreements,  farm-in agreements, area of mutual interest agreements,  water
     use  agreements,   CO2  purchase  agreements,   transportation  agreements,
     equipment  leases  and  other  agreements  but  only  to  the  extent  they
     specifically relate to any of the Hydrocarbon  Property or interests in the
     Hydrocarbon  Property  or to  the  production,  sale,  purchase,  exchange,
     processing,  injection,  extraction,  handling,  storage,  transporting  or
     marketing of the Hydrocarbons (as hereinafter defined) from or attributable
     to such Hydrocarbon Property or interests; (4) all geological, geophysical,
     engineering,  accounting, title, legal and other technical or business data
     concerning  the  Hydrocarbon  Property,  which  are  in the  possession  of
     Borrower or in which Borrower can grant a security interest, and all books,
     files,  records,  magnetic  media,  computer  records  and  other  forms of
     recording  or  obtaining  access  to such  data;  and  (5) the  Hydrocarbon
     Property even though Borrower's interests therein be incorrectly  described
     or a  description  of a  part  or  all  of  such  Hydrocarbon  Property  or
     Borrower's  interests therein be omitted; it being intended by Borrower and
     Secured  Party  herein to cover  and  affect  hereby  all  interests  which
     Borrower  may now own or may  hereafter  acquire in and to the  Hydrocarbon
     Property.

          (c) All of  Borrower's  rights,  titles  and  interests  in and to all
     easements,  rights-of-way,  or similar property interests or surface rights
     related to the Subject  Leases or the  Spacing  Units  associated  with the
     Subject  Wells,  and all related  licenses and permits,  together  with all
     present  and future  rights,  titles,  easements  and  estates now owned or
     hereafter  acquired by Borrower under or in connection  with such interests
     (all of which properties  described in this Section 1.01(c) are referred to
     collectively as the "Surface Rights").

          (d) All rights,  titles,  interests and estates now owned or hereafter
     acquired by  Borrower in and to all oil,  gas,  casinghead  gas,  drip gas,
     natural gasoline,  condensate,  distillate,  liquid  hydrocarbons,  gaseous

                                       4


     hydrocarbons and all products refined or separated therefrom  (collectively
     called  the  "Hydrocarbons"),  in and under and which may be  produced  and
     saved from or attributable to the Hydrocarbon  Property,  the lands spaced,
     pooled or unitized therewith and Borrower's  interests  therein,  including
     Borrower's  interests in all oil in tanks and all rents,  issues,  profits,
     proceeds,  products,  revenues and other income from or attributable to the
     Hydrocarbon  Property,  the lands spaced,  pooled or unitized therewith and
     Borrower's  interests therein which are subjected to the Liens and security
     interests  of this  Agreement  and  including  specifically  all  Liens and
     security  interests  in such  Hydrocarbons  securing  payment  of  proceeds
     resulting from the sale of Hydrocarbons.

          (e) All tenements, hereditaments,  appurtenances and properties in any
     way  appertaining,  belonging,  affixed or  incidental  to the  Hydrocarbon
     Property and the Surface  Rights,  rights,  titles,  interests  and estates
     described  or referred to in Section  1.01(a)  through  (c),  which are now
     owned or which may hereafter be acquired by Borrower, including any and all
     property,  real or personal,  immovable or movable,  now owned or hereafter
     acquired and situated  upon,  used,  held for use, or useful in  connection
     with the  operating,  working  or  development  of any of such  Hydrocarbon
     Property or the lands pooled or unitized  therewith and the Surface  Rights
     (excluding  drilling rigs, trucks,  automotive  equipment or other personal
     property  which may be taken to the  premises for the purpose of drilling a
     well or for other similar temporary uses) and including Borrower's interest
     (if any) in any and all oil  wells,  gas  wells,  injection  wells or other
     wells, buildings,  structures, field separators,  liquid extraction plants,
     plant compressors,  pumps, pumping units, pipelines,  sales and flow lines,
     gathering systems, field gathering systems, salt water disposal facilities,
     tanks and tank batteries,  fixtures, valves, fittings, machinery and parts,
     engines,   boilers,   steam  generation  facilities,   meters,   apparatus,
     equipment,  appliances,  tools, implements,  cables, wires, towers, casing,
     tubing and rods,  surface  leases,  rights-of-way,  easements,  servitudes,
     licenses  and  other  surface  and  subsurface  rights  together  with  all
     additions, substitutions,  replacements,  accessions and attachments to any
     and all of the foregoing properties.

          (f) Any property that may from time to time hereafter,  by delivery or
     by writing of any kind,  be  subjected  to the Lien and  security  interest
     hereof by Borrower or by anyone on Borrower's  behalf; and Secured Party is
     hereby  authorized to receive the same at any time as  additional  security
     hereunder.

          (g) All of the rights, titles and interests of every nature whatsoever
     now owned or  hereafter  acquired  by  Borrower  in and to the  Hydrocarbon
     Property  rights,  titles,  interests and estates and every part and parcel
     thereof,  including the Hydrocarbon Property rights, titles,  interests and
     estates as the same may be enlarged by the discharge of any payments out of
     production  or by the  removal of any  charges or Liens to which any of the
     Hydrocarbon Property rights, titles,  interests or estates are subject; all
     rights of  Borrower to Liens and  security  interests  securing  payment of
     proceeds from the sale of production from the Mortgaged Property;  together
     with any and all renewals and extensions of any of the Hydrocarbon Property
     rights,  titles,   interests  or  estates;  all  contracts  and  agreements
     supplemental to or amendatory of or in  substitution  for the contracts and
     agreements  described  or  mentioned  above;  and any  and  all  additional

                                       5


     interests  of  any  kind  hereafter  acquired  by  Borrower  in  and to the
     Hydrocarbon Property rights, titles, interests or estates.

          (h) All property of every kind and character  which Borrower has or at
     any time hereafter acquires, whether real or personal property, tangible or
     intangible,  or mixed,  all other  interests of every kind and character in
     and to the types and items of property and  interests  described in used or
     useful in connection with the Hydrocarbon Properties,  and the proceeds and
     products of all of the foregoing,  whether now owned or hereafter acquired,
     including, without limitation:

               (i) All present  and future  personal  property  which is used or
          useful in connection with the Hydrocarbon Property;

               (ii) All present  and future  increases,  profits,  combinations,
          reclassifications,   improvements   and   products   of,   accessions,
          attachments and other additions to, tools, parts and equipment used in
          connection with, and substitutes and replacements for, all or any part
          of the property and interests described above;

               (iii) All present and future As-extracted  collateral,  Accounts,
          Goods,  Equipment,  Inventory,  contract rights,  General  Intangibles
          (including,  without  limitation,  rights  in and  under  any  hedging
          agreements),   Chattel  Paper,   Documents,   Instruments,   Fixtures,
          Letter-of-Credit  Rights  (whether  or not the  letter  of  credit  is
          evidenced  by a  writing),  all books and  records  pertaining  to the
          Hydrocarbon   Property,   Deposit   Accounts   (other  than   payroll,
          withholding  tax and  other  fiduciary  Deposit  Accounts),  Commodity
          Accounts,  Hydrocarbons,  cash and noncash Proceeds,  and other rights
          and other Supporting Obligations arising from or by virtue of, or from
          the  voluntary  or  involuntary  sale  or  other  disposition  of,  or
          collections  with  respect  to,  or  insurance  proceeds  or  unearned
          insurance  premiums  payable with  respect to, or proceeds  payable by
          virtue of warranty or other claims against manufacturers of, or claims
          against any other person or entity with respect to, all or any part of
          the Hydrocarbons or the Hydrocarbon Property;

     TO HAVE AND TO HOLD the  Mortgaged  Property  unto  Secured  Party  and its
successors  and assigns,  for the use and benefit of the Secured  Creditors,  to
secure the  payment of the  Obligations  and to secure  the  performance  of the
covenants, agreements, and obligations of Borrower herein contained.

     Notwithstanding any provision in this Deed of Trust to the contrary,  in no
event is any Building (as defined in the applicable Flood Insurance  Regulation)
or  Manufactured  (Mobile) Home (as defined in the  applicable  Flood  Insurance
Regulation)  included in the definition of "Mortgaged  Property" and no Building
or Manufactured (Mobile) Home is hereby encumbered by this Deed of Trust.

     Any fractions or percentages  specified on Exhibit A hereto in referring to
Borrower's  interests are solely for purposes of the warranties made by Borrower

                                       6


pursuant  to  ARTICLE  III hereof  and shall in no manner  limit the  quantum of
interest affected by this Section 1.01 with respect to any Hydrocarbon  Property
or with respect to any unit or well identified on such Schedules.

     Section  1.02  Grant  of  Security  Interest.  Without  limitation  of  the
foregoing grants,  to secure the Obligations,  Borrower hereby grants to Secured
Party a security interest in and to all of Borrower's right,  title and interest
in and to that  portion of the  Mortgaged  Property  consisting  of property for
which  a  security  interest  may be  granted  under  Article  9 of the  Uniform
Commercial Code (including, without limitation, personal property and fixtures),
now owned or at any time hereafter acquired by Borrower or in which Borrower now
has or at any time in the future may  acquire any right,  title or interest  and
whether now  existing or  hereafter  coming into  existence  (collectively,  the
"Collateral")  as  collateral  security for the prompt and complete  payment and
performance  when due  (whether  at the  stated  maturity,  by  acceleration  or
otherwise) of the Obligations.

     Section 1.03 Real Property in Weld County  Colorado.  For good and valuable
consideration,  the receipt and sufficiency of which are hereby  acknowledged by
Borrower,  and the matters  hereinafter set forth,  Borrower hereby  irrevocably
grants bargains, sells assigns,  transfers and conveys to the Weld Trustee, with
POWER OF SALE,  for the benefit of Secured  Party,  and to Secured  Party,  with
POWER OF SALE, that part of the Mortgaged Property that is real property located
in Weld County,  Colorado  (including  any fixtures that are real property under
applicable state law); TO HAVE AND TO HOLD all of the Mortgaged Property that is
real property located in Weld County,  Colorado (including any fixtures that are
real  property  under  applicable  state law),  together with all of the rights,
privileges,  benefits,  hereditaments  and  appurtenances  in any way belonging,
incidental or pertaining  thereto,  to the Weld Trustee and its  successors  and
assigns, forever IN TRUST, NEVERTHELESS, for the security and benefit of Secured
Party and its successors and assigns and to Secured Party and its successors and
assigns,  subject to the terms,  conditions,  covenants,  agreements  and trusts
herein set forth.

     Section  1.04  Real  Property  in  Boulder  County  Colorado.  For good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged by Borrower, and the matters hereinafter set forth, Borrower hereby
irrevocably grants bargains, sells assigns, transfers and conveys to the Boulder
Trustee,  with POWER OF SALE, for the benefit of Secured  Party,  and to Secured
Party,  with POWER OF SALE,  that part of the  Mortgaged  Property  that is real
property  located in Boulder County,  Colorado  (including any fixtures that are
real  property  under  applicable  state  law);  TO HAVE  AND TO HOLD all of the
Mortgaged  Property that is real property  located in Boulder  County,  Colorado
(including  any fixtures that are real  property  under  applicable  state law),
together  with  all of  the  rights,  privileges,  benefits,  hereditaments  and
appurtenances  in any way belonging,  incidental or pertaining  thereto,  to the
Boulder Trustee and its successors and assigns, forever IN TRUST,  NEVERTHELESS,
for the security and benefit of Secured Party and its successors and assigns and
to  Secured  Party  and  its  successors  and  assigns,  subject  to the  terms,
conditions, covenants, agreements and trusts herein set forth.

     Section 1.05 Obligations Secured.  This Agreement is executed and delivered
by   Borrower  to  secure  and  enforce   the   following   (collectively,   the
"Obligations"):

                                       7


          (a) All  Indebtedness,  obligations  and  liabilities,  whether now in
     existence or hereafter  arising,  whether by acceleration or otherwise,  of
     Borrower,  arising out of or under the Credit Agreement and each other Loan
     Document to which Borrower is a party,  including,  without  limitation all
     Indebtedness  evidenced  by  all  promissory  notes  executed  by  Borrower
     pursuant to the Credit  Agreement and all notes given in  substitution  for
     the foregoing  promissory  notes, or in modification,  renewal or extension
     thereof,  in whole or in part (such promissory  notes, as from time to time
     supplemented, amended or modified and all other notes given in substitution
     therefor or in modification,  renewal,  rearrangement or extension thereof,
     in whole or in part,  being  hereafter  collectively  called the  "Notes"),
     together  with  interest,  collection  fees  and  attorneys'  fees,  all as
     provided in the Credit Agreement and the Loan Documents, whether such Notes
     are held by the original payees  thereunder or by any assignee or successor
     of any of said initial payees.

          (b) All  Indebtedness,  obligations  and  liabilities,  whether now in
     existence or hereafter  arising,  whether by acceleration or otherwise,  in
     respect of all Letters of Credit  issued  pursuant to the Credit  Agreement
     and all reimbursement obligations in respect thereof;

          (c) All additional loans or advances made by the Lenders to or for the
     benefit of  Borrower  pursuant  to the Credit  Agreement  or any other Loan
     Document (it being  contemplated  that the Lenders may lend additional sums
     to  Borrower  pursuant  to the  Credit  Agreement  from  time to time,  and
     Borrower  agrees  that any such  additional  loans shall be secured by this
     Agreement).

          (d) All  Indebtedness,  obligations  and liabilities of Borrower under
     any Secured Hedging Agreement (including,  without limitation,  any amounts
     payable in respect of a  liquidation  of, an  acceleration  of  obligations
     under, or an early termination of, such Secured Hedging Agreement,  and any
     unpaid  amounts owing in respect  thereof),  but  excluding any  additional
     transactions  or  confirmations  entered  into  after any  Secured  Hedging
     Counterparty  to whom  such  obligations  are owed  ceases  to be a Secured
     Hedging Counterparty.

          (e) Any sums which may be  advanced  or paid by  Secured  Party or the
     Lenders  under the terms  hereof or of the Credit  Agreement  or other Loan
     Documents  on  account  of the  failure  of  Borrower  to  comply  with the
     covenants  of  Borrower  contained  herein,  or the  failure of Borrower to
     comply with the covenants of Borrower  contained in the Credit Agreement or
     any other Loan  Documents;  and all other  indebtedness  of Borrower to the
     Secured  Creditors  arising  pursuant to the provisions of this  Agreement,
     including penalties, indemnities,  reasonable legal and other fees, charges
     and  expenses,  and  amounts  advanced  and  expenses  incurred in order to
     preserve  any   collateral   or  security   interest,   whether  due  after
     acceleration or otherwise.

          (f) All interest (including, without limitation,  interest accruing at
     any  post-default  rate and  interest  accruing  after  the  filing  of any
     petition  in   bankruptcy,   or  the   commencement   of  any   insolvency,
     reorganization  or like proceeding,  whether or not a claim for post-filing
     or post-petition  interest is allowed in such proceeding) in respect of all

                                       8


     of the  Obligations  described  in  this  Section  1.05  and all  costs  of
     collection and reasonable  attorneys'  fees, all as provided  herein and in
     the other Loan Documents.

          (g)  Punctual   performance   when  due  of  all  present  and  future
     obligations,  whether  absolute or contingent  and howsoever and whensoever
     created,  arising,  evidenced or acquired,  of Borrower  under any Security
     Instruments  or this  Agreement  to  Secured  Party  or any  other  Secured
     Creditor.

          (h) To the extent not otherwise  included,  payment and performance of
     all Indebtedness.

          (i)  All  renewals,   extensions,   amendments   and  changes  of,  or
     substitutions  or  replacements  for,  all or any  part of the  Obligations
     described under paragraphs (a) through (h) in this Section 1.05.

     Section 1.06 Fixture Filing,  As-extracted Collateral,  Etc. Without in any
manner limiting the generality of any of the other provisions of this Agreement:
(i) some  portions of the goods  described or to which  reference is made herein
are or are to become  fixtures on the land  described  or to which  reference is
made herein or on any  Exhibit  attached  hereto;  (ii) the  security  interests
created hereby under applicable  provisions of the Uniform  Commercial Code will
attach to the Hydrocarbons as and when they constitute As-extracted  collateral,
or the  Accounts  resulting  from the sale  thereof at the  wellhead or minehead
located on the land described or to which  reference is made herein;  (iii) this
Agreement  is to be filed of record in the real estate  records of the County in
which the Mortgaged  Property is located as a financing  statement and a fixture
filing; and (iv) Borrower is the record owner of the real estate or interests in
the real estate  comprising  the  Mortgaged  Property.  A carbon,  photographic,
facsimile or other reproduction of this Agreement or of any financing  statement
relating to this Agreement shall be sufficient as a financing  statement for any
of the purposes referred to in this Section 1.06.

     Section 1.07 Pro Rata Benefit.  This  Agreement is executed and granted for
the pro rata  benefit  and  security  of the Secured  Party,  the other  Secured
Creditors,  and any and all future holders of an interest in the Obligations and
the interest  thereon for so long as same remain  unpaid and  thereafter  for so
long as any Secured  Creditor (or any Affiliate) has any  obligations  under the
Credit  Agreement or any other Loan  Documents to lend money or issue Letters of
Credit in favor of Borrower  or has any  obligations  under any Secured  Hedging
Agreements (including those described in Section 1.05) or until the Liens hereby
created are released by Secured Party or such other Secured  Creditor;  it being
understood and agreed that possession of any Notes at any time by Borrower shall
not by itself extinguish the Obligations,  such Notes or this Agreement securing
payment  thereof,  and Borrower shall have the right to issue and reissue any of
the Notes from time to time as  convenience  may require,  without in any manner
extinguishing  or affecting the  Obligations,  the obligations  under any of the
Notes, or the security of this Agreement.

     Section 1.08 Defined Terms.  Each  capitalized  term used in this Agreement
and not defined in this Agreement  shall have the meaning  assigned such term in
the Credit  Agreement,  and if not therein defined,  such capitalized term shall

                                       9


have the meaning  assigned such term in the Uniform  Commercial Code. Terms used
herein  that are  defined  in the  Uniform  Commercial  Code shall have the same
meaning in this Agreement.  As used herein,  "Uniform Commercial Code" means the
Uniform  Commercial  Code  presently in effect in the State of Colorado,  as the
same may be amended from time to time, and any successor statute thereto, except
to the  extent  that the  Uniform  Commercial  Code of some  other  jurisdiction
applies mandatorily.

     Section 1.09 Certain Definitions.  For all purposes of this Agreement,  the
following term shall have the meaning set forth below:

            "Flood Insurance Regulations" means (a) the National Flood Insurance
Act of 1968 as now or hereafter in effect or any successor statute thereto, (b)
the Flood Disaster Protection Act of 1973 as now or hereafter in effect or any
successor statute thereto, (c) the National Flood Insurance Reform Act of 1994
(amending 42 USC ss. 4001, et seq.), as the same may be amended or recodified
from time to time, and (d) the Flood Insurance Reform Act of 2004 and any
regulations promulgated thereunder.

            "Secured Creditors" means the Administrative Agent, the Collateral
Agent, the Lenders and any Secured Hedging Counterparty.

            "Spacing Unit" means the drilling unit established for each Subject
Well prior to the commencement of drilling operations, which drilling unit shall
comply with any applicable rules and regulations of the Colorado Oil and Gas
Conservation Commission and the relevant operating agreement.

                                   ARTICLE II
                      Assignment of As-Extracted Collateral

     Section 2.01 Assignment.

          (a) As  security  for  payment  and  performance  of the  Obligations,
     Borrower  does hereby  absolutely  and  unconditionally  assign,  transfer,
     convey and grant a security interest unto Secured Party, its successors and
     assigns (for the benefit of Secured Party and the other Secured Creditors),
     in and to:

               (i) all of its As-extracted  collateral located in or relating to
          any Hydrocarbon Property located in any county where this Agreement is
          filed,   including  all  As-extracted   collateral   relating  to  the
          Hydrocarbon  Property,  the Hydrocarbons and all products  obtained or
          processed therefrom;

               (ii) the revenues and proceeds now and hereafter  attributable to
          such  Hydrocarbon  Property,  including  the  Hydrocarbons,  and  said
          products and all payments in lieu,  such as "take or pay"  payments or
          settlements; and

               (iii) all amounts and proceeds  hereafter payable to or to become
          payable to  Borrower or now or  hereafter  relating to any part of the
          subject  interests  described in (i) and (ii) above,  and all amounts,

                                       10


          sums,  monies,  revenues and income  which become  payable to Borrower
          from,  or with respect to, any of the Mortgaged  Property,  present or
          future,  now  or  hereafter  constituting  a  part  of  the  Mortgaged
          Property.

          (b) Following the occurrence and during the  continuation  of an Event
     of Default,  Borrower  agrees to perform all such acts,  and to execute all
     such  further  assignments,   transfers  and  division  orders,  and  other
     instruments as may be required or desired by Secured Party in order to have
     said proceeds and revenues so paid to Secured Party. In addition to any and
     all rights of a secured party under Sections 9-607 and 9-609 of the Uniform
     Commercial Code, following the occurrence and during the continuation of an
     Event of  Default,  Secured  Party  is fully  authorized  to  receive  said
     revenues  and  proceeds;  to endorse and cash any and all checks and drafts
     payable  to the order of  Borrower  or  Secured  Party for the  account  of
     Borrower  received from or in connection with said revenues or proceeds and
     to hold the  proceeds  thereof in a bank account as  additional  collateral
     securing the  Obligations;  and to execute  transfer and division orders in
     the name of Borrower,  or  otherwise,  with  warranties  binding  Borrower.
     During the  continuation of an Event of Default,  all proceeds  received by
     Secured  Party  pursuant to this grant and  assignment  shall be at Secured
     Party's sole discretion  either remitted to Borrower or applied as provided
     in the Credit  Agreement  and the  Intercreditor  Agreement.  Secured Party
     shall not be liable for any delay, neglect, or failure to effect collection
     of any  proceeds or to take any other  action in  connection  therewith  or
     hereunder;  but, following the occurrence and during the continuation of an
     Event of Default,  Secured Party shall have the right, at its election,  in
     the name of  Borrower or  otherwise,  to  prosecute  and defend any and all
     actions or legal proceedings  deemed advisable by Secured Party in order to
     collect such funds and to protect the  interests of Secured  Party,  and/or
     Borrower,  with all costs, expenses and reasonable attorneys' fees incurred
     in connection  therewith  being paid by Borrower.  Borrower hereby appoints
     Secured  Party as its  attorney-in-fact  to  pursue  any and all  rights of
     Borrower to Liens on and security  interests in the  Hydrocarbons  securing
     payment of proceeds of runs attributable to the  Hydrocarbons.  In addition
     to the rights  granted to Secured Party in Section 1.01 of this  Agreement,
     Borrower hereby further  transfers and assigns to Secured Party any and all
     such Liens,  security interests,  financing statements or similar interests
     of Borrower  attributable to its interest in the  Hydrocarbons and proceeds
     of runs  therefrom  arising  under or created by any  statutory  provision,
     judicial  decision or otherwise.  The power of attorney  granted to Secured
     Party in this  Section  2.01,  being  coupled  with an  interest,  shall be
     irrevocable so long as the  Obligations or any part thereof remains unpaid.
     Until  such time as an Event of Default  has  occurred  and is  continuing,
     Secured Party hereby grants to Borrower a license to sell such Hydrocarbons
     and receive  proceeds  from the sale of  Hydrocarbons,  which license shall
     automatically  terminate  upon such Event of Default and for so long as the
     same continues.

     Section  2.02  No  Modification  of  Payment  Obligations.  Nothing  herein
contained  shall modify or otherwise  alter the  obligation  of Borrower to make
prompt payment of all principal and interest owing on the  Obligations  when and
as the same become due  regardless  of whether the proceeds of the  Hydrocarbons
are  sufficient to pay the same and the rights  provided in accordance  with the
foregoing  assignment provision shall be cumulative of all other security of any

                                       11


and  every  character  now  or  hereafter  existing  to  secure  payment  of the
Obligations.  Nothing in this  ARTICLE II is  intended  to be an  acceptance  of
collateral in satisfaction of the Obligations.

     Section 2.03 Rights of Producers.  As security for payment and  performance
of the  Obligations,  Borrower  hereby  grants,  sells,  assigns,  sets over and
mortgages  unto Secured Party during the term hereof,  all of Borrower's  rights
and interests  (if any)  pursuant to any  provision of  applicable  law granting
producers  of oil and gas a lien on the oil and gas  produced by them and on the
resulting accounts receivable, hereby vesting in Secured Party all of Borrower's
rights as an interest owner to the continuing security interest in and lien upon
the Mortgaged Property.

                                  ARTICLE III
                    Representations, Warranties and Covenants

     Borrower hereby represents, warrants and covenants as follows:

     Section 3.01 Title. To the extent of the undivided  interests  specified on
any Exhibit  attached  hereto,  Borrower has good and defensible  title to, or a
valid and enforceable  leasehold  interest in, all the real property included in
the Mortgaged Property, and good title to, or a valid leasehold interest in, all
personal property included in the Mortgaged Property.  The Mortgaged Property is
free of any and all Liens except Liens allowed by the Credit Agreement,  if any.
Borrower is the legal and beneficial  owner of the Collateral  free and clear of
any and all Liens  except  Liens  allowed in the Credit  Agreement,  if any.  No
financing  statement or other  public  notice with respect to all or any part of
the Collateral is on file or of record in any public office, except such as have
been filed in favor of Secured Party, for its benefit and the ratable benefit of
the Secured Creditors,  pursuant to this Agreement,  the Security Instruments or
as are filed to secure Liens permitted by the Credit Agreement.

     Section 3.02 Perfected Liens; Defend Title; Further Assurances.

          (a) This  Agreement  is, and during the term  hereof  will be kept,  a
     direct first priority Lien and security interest upon the real and personal
     property  presently  constituting  the  Mortgaged  Property.  The  security
     interests  granted in the  Collateral  pursuant to this  Agreement upon the
     filing  of  financing   statements  in  the  appropriate   offices  in  the
     appropriate  jurisdictions  (which  filings have been  delivered to Secured
     Party in completed form) will constitute valid perfected security interests
     in all of the Collateral in favor of Secured Party, for the ratable benefit
     of the Secured  Creditors,  as  collateral  security  for the  Obligations,
     enforceable  in accordance  with the terms hereof  against all creditors of
     Borrower  and any  Persons  purporting  to  purchase  any  Collateral  from
     Borrower (to the extent  provided in the Uniform  Commercial  Code) and are
     prior to all other Liens on the  Collateral in existence on the date hereof
     except for Liens that have priority claim on the Collateral by operation of
     law.

          (b)  Borrower  will not  create or suffer to be  created  or permit to
     exist any Lien,  security  interest or charge  prior to or on a parity with

                                       12


     the  Lien and  security  interest  of this  Agreement  upon  the  Mortgaged
     Property or the  Collateral or any part thereof or upon the rents,  issues,
     revenues,  profits and other income therefrom other than as contemplated by
     or  permitted   under  the  Credit   Agreement  to  exist,  to  the  extent
     contemplated by the terms thereof. Borrower will not create or suffer to be
     created or permit to exist any Lien,  security interest or charge junior to
     the  Lien and  security  interest  of this  Agreement  upon  the  Mortgaged
     Property or the  Collateral or any part thereof or upon the rents,  issues,
     revenues,  profits and other income therefrom other than as contemplated by
     the Credit Agreement.

          (c)  Borrower  will  warrant  and  defend  the title to the  Mortgaged
     Property  and the  Collateral  against  the claims and demands of all other
     Persons  whomsoever  and will maintain and preserve the Lien created hereby
     so long as any of the Obligations secured hereby remains unpaid.  Should an
     adverse  claim (other than as  contemplated  by this Section  3.02) be made
     against or a cloud develop upon the title which materially  affects part of
     the  Mortgaged  Property  or  the  Collateral,   Borrower  agrees  it  will
     immediately defend against such adverse claim or take appropriate action to
     remove such cloud at  Borrower's  cost and expense,  and  Borrower  further
     agrees that Secured Party may (following  notice to Borrower and failure of
     Borrower to cure (or diligently  contest) such claim or cloud within thirty
     (30) days of such  notice,  unless  sooner  action is  required in order to
     preserve  the value of the  collateral)  take such other action as it deems
     advisable to protect and preserve the interests of the Secured Creditors in
     the Mortgaged Property and the Collateral,  and in such event Borrower will
     indemnify  Secured Party against any and all costs,  reasonable  attorney's
     fees and other expenses which Secured Party may incur in defending  against
     any such adverse claim or taking action to remove any such cloud.

          Section 3.03 Further Assurances.

          (a) At any time and from time to time,  upon the  request  of  Secured
     Party  or any  Secured  Creditor,  and at the  sole  expense  of  Borrower,
     Borrower will promptly and duly give, execute,  deliver,  indorse,  file or
     record  any  and  all  financing   statements,   continuation   statements,
     amendments,  notices  (including,  without  limitation,   notifications  to
     financial  institutions  and  any  other  Person),  contracts,  agreements,
     assignments,  certificates,  stock powers or other instruments,  obtain any
     and all  governmental  approvals and consents and take or cause to be taken
     any and all steps or acts that may be necessary or as Secured  Party or any
     Secured Creditor may reasonably request to create,  perfect,  establish the
     priority of, or to preserve the  validity,  perfection  or priority of, the
     Liens  granted by this  Agreement or to enable  Secured  Party or any other
     Secured  Creditor to enforce its rights,  remedies,  powers and  privileges
     under this Agreement and any other Loan Document with respect to such Liens
     or to otherwise  obtain or preserve the full benefits of this Agreement and
     the rights, powers and privileges herein granted.

          (b) Without limiting the obligations of Borrower under Section 3.03(a)
     or under any other provision of this Agreement, upon the request of Secured
     Party, Borrower shall take or cause to be taken all actions (other than any

                                       13


     actions  required to be taken by Secured Party)  requested by Secured Party
     to cause  Secured  Party to (i)  have  "control"  (within  the  meaning  of
     Sections 9-104, 9-105, 9-106 and 9-107 of the Uniform Commercial Code) over
     any  Mortgaged  Property  or  Collateral   constituting  Deposit  Accounts,
     Electronic Chattel Paper,  Investment Property or Letter-of-Credit  Rights,
     including, without limitation,  executing and delivering any agreements, in
     form  and  substance   satisfactory  to  Secured  Party,   with  securities
     intermediaries,  issuers or other Persons in order to establish  "control",
     and Borrower shall promptly notify Secured Party of Borrower's  acquisition
     of any such  Collateral,  (ii) with respect to Collateral  other than Goods
     covered by a Document in the  possession of a Person other than Borrower or
     Secured  Party,  Borrower  shall obtain  written  acknowledgment  that such
     Person  holds  possession  subject to  Secured  Party's  rights  under this
     Agreement; and (iii) with respect to any Collateral constituting Goods that
     are in the possession of a bailee,  Borrower shall provide prompt notice to
     Secured Party of any such Collateral then in the possession of such bailee,
     and  Borrower  shall take or cause to be taken all actions  (other than any
     actions  required to be taken by Secured  Party)  necessary or requested by
     Secured Party to cause Secured Party to have a perfected  security interest
     in such Mortgaged Property or Collateral under applicable law.

          (c) This Section 3.03 and the obligations  imposed on Borrower by this
     Section  3.03  shall be  interpreted  as broadly  as  possible  in favor of
     Secured Party and the Secured  Creditors in order to effectuate the purpose
     and intent of this Agreement.

     Section  3.04 Not a Foreign  Person.  Borrower  is not a  "foreign  person"
within the meaning of the Internal Revenue Code of 1986, as amended (hereinafter
called the "Code"), Sections 1445 and 7701 (i.e., Borrower is not a non-resident
alien, foreign corporation, foreign partnership, foreign trust or foreign estate
as  those  terms  are  defined  in the  Code  and  any  regulations  promulgated
thereunder).

     Section 3.05 Power to Create Lien and Security. Borrower has full power and
lawful authority to grant, bargain, sell, assign, transfer, mortgage, and convey
a security  interest in all of the Mortgaged  Property and the Collateral in the
manner  and form  herein  provided  and  without  obtaining  the  authorization,
approval, consent or waiver of any lessor, sublessor,  Governmental Authority or
other party or parties whomsoever.

     Section 3.06 Revenue and Cost Bearing Interest. Borrower's ownership of the
Hydrocarbon  Property and the  undivided  interests  therein as specified on any
Exhibit  attached hereto will,  after giving full effect to all Liens allowed by
the Credit Agreement,  if any, afford Borrower not less than those net interests
(expressed as a fraction, percentage or decimal) in the production from or which
is allocated to such Hydrocarbon  Property  specified as Net Revenue Interest on
any Exhibit  attached  hereto and will cause Borrower to bear not more than that
portion (expressed as a fraction,  percentage or decimal),  specified as Working
Interest on any Exhibit  attached hereto,  of the costs of drilling,  developing
and operating the units identified on any Exhibit attached hereto, except to the
extent of any proportionate corresponding increase in the Net Revenue Interest.

     Section 3.07 Rentals Paid; Leases in Effect.  All rentals and royalties due
and payable in accordance with the terms of any leases or subleases comprising a

                                       14


part of the  Hydrocarbon  Property  have been duly paid or provided  for and, to
Borrower's  knowledge,  all  leases  or  subleases  comprising  a  part  of  the
Hydrocarbon Property are in full force and effect.

     Section 3.08 Operation of Mortgaged  Property,  Etc. Except with respect to
those  which  Borrower  elects  to allow to  expire  in the  ordinary  course of
business,  Borrower will promptly pay and discharge all rentals,  delay rentals,
royalties and indebtedness  accruing under, and perform or cause to be performed
each  and  every  act,  matter  or  thing  required  by,  each  and  all  of the
assignments,  deeds, leases,  sub-leases,  contracts and agreements described or
referred to herein or affecting  Borrower's interests in the Mortgaged Property,
and will do all other things necessary to keep unimpaired Borrower's rights with
respect  thereto and prevent any forfeiture  thereof or default  thereunder.  To
Borrower's  knowledge,  the  Mortgaged  Property  (and any  properties  unitized
therewith) has been maintained, operated and developed in a good and workmanlike
manner and in conformity with all applicable laws and all rules, regulations and
orders of all duly constituted authorities having jurisdiction and in conformity
with the  provisions of all leases,  subleases or other  contracts  comprising a
part of the Hydrocarbon  Property and other  contracts and agreements  forming a
part of the Mortgaged Property, except where the failure to so maintain, operate
or develop would not have a Material  Adverse Effect on Borrower.  Borrower will
operate the Mortgaged  Property in a careful and efficient  manner in accordance
with the  practices  of the  industry  and in  compliance  with  all  applicable
contracts and  agreements and in compliance  with all  applicable  proration and
conservation  laws of the  jurisdiction  in which  such  Mortgaged  Property  is
situated,  and all applicable  laws, rules and regulations of every other agency
and authority  from time to time  constituted  to regulate the  development  and
operation of such Mortgaged Property and the production and sale of Hydrocarbons
therefrom.  In the case of any  Mortgaged  Property  for which  Borrower  is the
operator, Borrower will or will cause to be done such development work as may be
reasonably  necessary to the prudent and economical  operation of such Mortgaged
Property in  accordance  with the most  approved  practices  of operators in the
industry,  including  all to be done that may be  appropriate  to  protect  from
diminution the productive capacity of such Mortgaged Property and each producing
well thereon including, without limitation, cleaning out and reconditioning each
well from time to time,  plugging and completing at a different  level each such
well,  drilling a substitute well to conform to changed spacing  regulations and
to protect such Mortgaged  Property against drainage whenever and as often as is
necessary.

     Section 3.09 Operation By Third  Parties.  All or portions of the Mortgaged
Property may be comprised of interests in the Hydrocarbon  Property which may be
operated by a party or parties other than Borrower or its  Affiliates,  and with
respect to all or any such  interests  and  properties  which may be operated by
parties other than Borrower or its Affiliates, Borrower's covenants as expressed
in this  ARTICLE  III are  modified  as  follows:  to the  extent  Borrower  has
Knowledge  of  noncompliance,  Borrower  shall use its  commercially  reasonable
efforts to obtain  compliance with such covenants by the working interest owners
or the  operator  or  operators  of such  leases or  properties  (to the  extent
required by the operating or other agreements to which they are subject).

     Section  3.10  Abandon,  Sales.  Borrower  will not  sell,  lease,  assign,
transfer or otherwise  dispose or abandon any of the  Mortgaged  Property or the
Collateral except as permitted by the Credit Agreement or this Agreement.

                                       15


     Section 3.11  Instruments and Chattel Paper.  Borrower shall notify Secured
Party promptly after the receipt of any Collateral  constituting  Instruments or
Chattel Paper in which the amount payable thereunder equals or exceeds $100,000.
At the request of Secured  Party,  Borrower  shall  deliver to Secured Party all
Collateral constituting Instruments and Tangible Chattel Paper, duly endorsed in
a manner  satisfactory  to Secured Party,  to be held as collateral  pursuant to
this   Agreement.   Borrower  will   undertake  to  assure  that  no  Collateral
constituting  Chattel  Paper or  Instruments  contains,  nor  will it  hereafter
contain,  any  statement  therein to the effect  that such  Collateral  has been
assigned to an  identified  party other than Secured  Party,  and the grant of a
security  interest in such  Collateral in favor of Secured Party  hereunder does
not violate the rights of any other Person as a secured party.

     Section  3.12  Limitations  on   Modifications,   Waivers,   Extensions  of
Agreements  Giving Rise to Accounts.  Except in the ordinary course of business,
Borrower  will not (a) amend,  modify,  terminate or waive any  provision of any
Chattel Paper,  Instrument or any agreement giving rise to an Account or Payment
Intangible  in any manner  which could  reasonably  be  expected  to  materially
adversely affect the value of such Chattel Paper, Instrument, Payment Intangible
or Account as Collateral,  or (b) fail to exercise  promptly and diligently each
and every material  right which it may have under any Chattel Paper,  Instrument
and each agreement giving rise to an Account or Payment  Intangible  (other than
any right of  termination).  Borrower  shall  deliver to Secured Party a copy of
each material demand,  notice or document  received by it relating in any way to
any Chattel  Paper,  Instrument  or any  agreement  giving rise to an Account or
Payment Intangible.

     Section 3.13  Insurance.  In the event of any loss to any Collateral  under
any insurance policies required to be carried by Borrower pursuant to the Credit
Agreement,  Secured Party shall have the right (but not the  obligation) to make
proof of loss and collect the same, and all amounts so received shall be applied
toward costs,  charges and expenses (including  reasonable  attorneys' fees), if
any,  incurred in the  collection  thereof,  then to the  payment,  in the order
determined by Secured Party, in its own discretion, of the Obligations,  and any
balance  remaining  shall be  subject  to the order of  Borrower.  As and to the
extent any such insurance policies cover the Collateral, Secured Party is hereby
authorized  but not  obligated to enforce in its name or in the name of Borrower
payment  of any or all of said  policies  or settle or  compromise  any claim in
respect thereof,  and to collect and make receipts for the proceeds thereof, and
Secured  Party is hereby  appointed  Borrower's  agent and  attorney-in-fact  to
endorse any check or draft  payable to Borrower in order to collect the proceeds
of such  insurance.  In the event of  foreclosure  of this  Agreement,  or other
transfer of title to the  Mortgaged  Property in  extinguishment  in whole or in
part of the  Obligations,  all right,  title and  interest of Borrower in and to
such policies then in force  concerning the Mortgaged  Property and all proceeds
payable  thereunder  with  respect  to the  Mortgaged  Property  (to the  extent
permitted  by such  policies)  shall  thereupon  vest in the  purchaser  at such
foreclosure  or Secured  Party,  as the case may be, or other  transferee in the
event of such other  transfer of title in connection  with a foreclosure  of the
Mortgage.

     Section 3.14 Further Identification of Collateral. Borrower will furnish to
Secured Party and the Secured  Creditors  from time to time, at Borrower's  sole
cost and expense,  statements and schedules  further  identifying and describing
the Mortgaged  Property and the  Collateral and such other reports in connection

                                       16


with the  Mortgaged  Property and  Collateral  as Secured  Party may  reasonably
request, all in reasonable detail.

     Section 3.15 Failure to Perform.  Borrower agrees that if Borrower fails to
perform any act or to take any action  which  Borrower is required to perform or
take  hereunder  or pay any money which  Borrower is required to pay  hereunder,
each of Secured Party and the Secured  Creditors,  in Borrower's  name or its or
their own name may (upon prior  written  notice to  Borrower),  but shall not be
obligated  to perform or cause to  perform  such act or take such  action or pay
such money, and any expenses so incurred by either of them and any money so paid
by either of them  shall be a demand  obligation  owing by  Borrower  to Secured
Party or such  Secured  Creditor,  as the case may be, and Secured  Party or any
Secured  Creditor,  upon making such payment,  shall be subrogated to all of the
rights of the  Person  receiving  such  payment.  Each  amount  due and owing by
Borrower  to each of Secured  Party and the Secured  Creditors  pursuant to this
Agreement  shall bear interest from the date of such  expenditure  or payment or
other occurrence which gives rise to such amount being owed to such Person until
paid at the Post  Default Rate set forth in the Credit  Agreement,  and all such
amounts  together with such interest  thereon shall be a part of the Obligations
described in Section 1.05.

                                   ARTICLE IV
                              Rights and Remedies

     Section  4.01  Event of  Default.  An "Event of  Default"  under the Credit
Agreement shall be an Event of Default under this Agreement.

     Section 4.02 Foreclosure by Advertisement and Sale.

          (a) If an Event of  Default  shall  occur and be  continuing,  Secured
     Party shall  become and be  entitled,  as of right,  without  regard to the
     adequacy of the  Mortgaged  Property or the  Collateral as security for the
     Obligations  hereby  secured,  to employ counsel to enforce  payment of the
     Obligations  secured hereby, to commence and maintain a foreclosure sale by
     judicial  action or by a public  trustee's sale to foreclose this Agreement
     and to sell the  Mortgaged  Property in  accordance  with the power of sale
     granted herein and applicable  Colorado law, and exercise such other rights
     and  remedies  granted  herein,  in any other Loan  Document  or by law and
     equity,  which rights and remedies  shall be cumulative  and not exclusive.
     Secured  Party  may sell the  Mortgaged  Property  either  as a whole or in
     separate parcels, and in such order as it may determine. The purchase price
     shall be  payable in lawful  money of the United  States at the time of the
     sale. In exercising the power of sale contained  herein,  Secured Party may
     hold one or more sales of all or any portion of the  Mortgaged  Property by
     public  announcement  at the time and place of sale set forth in the notice
     thereof,  and from time to time  thereafter may postpone such sale or sales
     of all or any  portion of the  Mortgaged  Property  to the same or separate
     days  by  public   announcement   at  such  time  fixed  by  the  preceding
     postponement.  Any Person, including Secured Party or any Secured Creditor,
     may purchase at such sale.  Secured  Party may credit bid at any such sale,
     and if Secured Party is the successful  purchaser,  it may apply any of the
     outstanding Obligations secured hereby in settlement of the purchase price.
     Secured Party may resort to and realize upon the security hereunder and any
     other real or personal  property  security now or hereafter held by Secured
     Party  for the  Obligations  secured  hereby in such  order  and  manner as
     Secured  Party  may,  in its sole  discretion,  determine.  Any or all such
     security may be taken  concurrently or  successively  and in one or several
     consolidated or independent judicial actions or nonjudicial proceedings, or
     both. Nothing contained herein shall be construed so as to limit in any way
     Secured  Party's  rights to sell the  Mortgaged  Property,  or any  portion
     thereof,  by private sale if, and to the extent that,  such private sale is
     permitted  under the laws of the  applicable  jurisdiction  or by public or
     private  sale  after  entry  of  a  judgment  by  any  court  of  competent
     jurisdiction  so  ordering.  At any such sale:  (i) whether  made under the
     power herein  contained or any other legal  enactment,  or by virtue of any
     judicial proceedings or any other legal right, remedy or recourse, it shall
     not be necessary for Secured Party to have physically  present,  or to have

                                       17


     constructive   possession  of,  the  Mortgaged  Property  (Borrower  hereby
     covenanting  and  agreeing  to deliver to Secured  Party any portion of the
     Mortgaged  Property  not  actually or  constructively  possessed by Secured
     Party  immediately upon demand by Secured Party) and the title to and right
     of possession of any such property  shall pass to the purchaser  thereof as
     completely  as if the same had  been  actually  present  and  delivered  to
     purchaser at such sale,  (ii) each  instrument  of  conveyance  executed by
     Secured  Party  shall  contain a special  warranty of title,  binding  upon
     Borrower and its successors and assigns, (iii) any and all prerequisites to
     the validity thereof shall be conclusively presumed to have been performed,
     (iv) the receipt of Secured Party or of such other party or officer  making
     the sale shall be a sufficient discharge to the purchaser or purchasers for
     its purchase money and no such  purchaser or purchasers,  or its assigns or
     personal  representatives,  shall  thereafter  be  obligated  to see to the
     application  of such purchase  money,  or be in any way  answerable for any
     loss,  misapplication or nonapplication  thereof, (v) to the fullest extent
     permitted by law, Borrower shall be completely and irrevocably  divested of
     all of its right, title, interest,  claim and demand whatsoever,  either at
     law or in  equity,  in and to the  property  sold and such sale  shall be a
     perpetual bar both at law and in equity against  Borrower,  and against any
     and all other  persons  claiming or to claim the property  sold or any part
     thereof,  by, through or under  Borrower,  and (vi) to the extent and under
     such  circumstances  as  are  permitted  by  law,  Secured  Party  may be a
     purchaser  at any such  sale,  and shall have the  right,  after  paying or
     accounting  for all costs of said sale or  sales,  to credit  (in lieu of a
     cash payment) the amount of the bid against the amount of the Obligations.

          (b) Upon the happening and during the continuance of any of the Events
     of  Default,  Secured  Party is and shall be entitled to all of the rights,
     powers and remedies afforded a secured party by the Uniform Commercial Code
     with respect to the Collateral, or Secured Party may proceed as to both the
     real and personal property covered hereby in accordance with the rights and
     remedies  granted  under this  Agreement  in  respect of the real  property
     covered hereby.  Without limiting the generality of the foregoing,  Secured
     Party, without demand of performance or other demand, presentment, protest,
     advertisement  or notice of any kind  (except  any notice  required  by law

                                       18


     referred to below) to or upon Borrower or any other Person (all and each of
     which demands, defenses, advertisements and notices are hereby waived), may
     in such circumstances forthwith collect,  receive,  appropriate and realize
     upon the Collateral, or any part thereof, and/or may forthwith sell, lease,
     assign,  give option or options to purchase,  or  otherwise  dispose of and
     deliver the  Collateral  or any part  thereof (or contract to do any of the
     foregoing),  in one or more parcels at public or private sale or sales,  at
     any  exchange,  broker's  board or office of Secured  Party or any  Secured
     Creditor  or  elsewhere  upon  such  terms  and  conditions  as it may deem
     advisable and at such prices as it may deem best,  for cash or on credit or
     for  future  delivery  without  assumption  of  any  credit  risk,  all  in
     accordance with any  requirements  of applicable law.  Secured Party or any
     Secured  Creditor  shall have the right upon any such public sale or sales,
     and, to the extent  permitted by law,  upon any such private sale or sales,
     to purchase the whole or any part of the  Collateral  so sold,  free of any
     right or equity of redemption in Borrower,  which right or equity is hereby
     waived and released.  If an Event of Default shall occur and be continuing,
     Borrower  further  agrees,  at Secured  Party's  request,  to assemble  the
     Collateral  and make it available to Secured  Party at places which Secured
     Party shall reasonably select, whether at Borrower's premises or elsewhere.
     Upon any such  sale or  transfer,  Secured  Party  shall  have the right to
     deliver,  assign and transfer to the  purchaser or  transferee  thereof the
     Collateral  so sold or  transferred.  Secured  Party  shall  apply  the net
     proceeds of any action  taken by it pursuant to this  Section  4.02,  after
     deducting  all  reasonable  costs and  expenses  of every kind  incurred in
     connection therewith or incidental to the care or safekeeping of any of the
     Collateral  or in any way  relating  to the  Collateral  or the  rights  of
     Secured  Party and the  Secured  Creditors  hereunder,  including,  without
     limitation, reasonable attorneys' fees and disbursements, to the payment in
     whole  or in  part  of the  Obligations,  in  accordance  with  the  Credit
     Agreement, and only after such application and after the payment by Secured
     Party of any other  amount  required by any  provision  of law,  including,
     without  limitation,  Section 9-615 of the Uniform  Commercial  Code,  need
     Secured Party account for the surplus,  if any, to Borrower.  To the extent
     permitted  by  applicable  law,  Borrower  waives all  claims,  damages and
     demands  it may  acquire  against  Secured  Party or any  Secured  Creditor
     arising  out of the  exercise by them of any rights  hereunder,  other than
     claims,  damages or demands  resulting from the gross negligence or willful
     misconduct of Secured Party or any Secured Creditor, as the case may be. If
     any notice of a proposed sale or other  disposition of Collateral  shall be
     required by law, such notice shall be deemed reasonable and proper if given
     at least ten (10) days before such sale or other disposition.

          (c) If an Event of Default shall occur and be continuing, in the event
     that Secured Party elects not to sell the Collateral, Secured Party retains
     its rights to dispose of or  utilize  the  Collateral  or any part or parts
     thereof in any manner  authorized or permitted by law or in equity,  and to
     apply the proceeds of the same towards payment of the Obligations. Each and
     every method of disposition  of the Collateral  described in this Agreement
     shall constitute  disposition in a commercially  reasonable manner. Secured
     Party may appoint any Person as agent to perform any act or acts  necessary
     or incident to any sale or transfer of the Collateral.

          (d) If an Event of  Default  shall  occur and be  continuing,  Secured
     Party may proceed as to the Mortgaged Property  constituting  Collateral in
     accordance  with  Secured  Party's  rights and  remedies  in respect to the
     Mortgaged Property or sell the Mortgaged Property  constituting  Collateral

                                       19


     separately and without regard to the remainder of the Mortgaged Property in
     accordance  with  Secured  Party's  rights and  remedies  provided  by this
     Agreement,  the other Loan Documents,  the Uniform Commercial Code, as well
     as other rights and remedies at law or in equity.

          (e) If an Event of Default shall occur and be continuing  with respect
     to the  environmental  covenants  of the  Credit  Agreement,  if any,  then
     Secured  Party  (and,  to  the  extent   necessary  or   appropriate,   the
     Administrative  Agent) may seek a judgment  that  Borrower has breached its
     covenants,  representations,  or warranties in this  Agreement or any other
     covenants, representations, or warranties contained in the Credit Agreement
     that are  deemed to be  environmental  provisions  (each an  "Environmental
     Provision"),  by  commencing  and  maintaining  an action or actions in any
     court  of  competent  jurisdiction,  whether  commenced  prior  to or after
     foreclosure  of the lien of this  Agreement.  Secured  Party or its agents,
     representatives,  and  employees  may  also  seek an  injunction  to  cause
     Borrower to abate any action  being taken by Borrower in  violation  of any
     Environmental  Provision  and may seek the recovery of all costs,  damages,
     expenses,  fees, penalties,  fines, judgments,  indemnification payments to
     third parties,  and other  out-of-pocket costs or expenses of Secured Party
     (collectively, "Environmental Costs") incurred or advanced by Secured Party
     relating to the cleanup,  remedy,  or other response action required by any
     environmental  law, or any  environmental  claim,  or which  Secured  Party
     believes  necessary to protect the Mortgaged  Property,  in each such case,
     which Borrower was required, but failed, to perform under applicable law or
     pursuant to the Loan  Documents;  provided,  however,  that Secured Party's
     recovery  hereunder  shall be limited to the relevant  Environmental  Costs
     that are  attributable  to  Borrower's  interest in the relevant  Mortgaged
     Property to which the  expenditure  relates unless Borrower is the operator
     of such property.  It will be conclusively  presumed  between Secured Party
     and Borrower that all  Environmental  Costs incurred or advanced by Secured
     Party relating to the cleanup,  remedy,  or other response  action of or to
     the  Mortgaged  Property  were made by  Secured  Party in good  faith.  All
     Environmental  Costs  incurred by Secured Party under this Section  4.02(e)
     (including,  without limitation,  court costs,  reasonable consultant fees,
     and reasonable  attorney fees,  whether  incurred in litigation and whether
     before or after  judgment) will bear interest at the rate applicable to the
     Notes from the date of expenditure until those sums have been paid in full.
     Secured Party will be entitled to bid, at any trustee's or foreclosure sale
     of the Mortgaged Property,  the amount of the costs, expenses, and interest
     in addition to the amount of other  Indebtedness.  Secured  Party may waive
     its lien against the Mortgaged Property or any portion of it, including the
     improvements and the personal Mortgaged Property, to the extent that any of
     the  Mortgaged  Property is found to be  environmentally  impaired,  and to
     exercise all rights and remedies of an unsecured  creditor against Borrower
     and  all  of  Borrower's  assets  and  property  for  the  recovery  of any
     deficiency and Environmental Costs, including,  but not limited to, seeking
     an attachment order.

     Section 4.03 Collections on Accounts,  Etc. Secured Party hereby authorizes
Borrower to collect upon the  Accounts,  Instruments,  Chattel Paper and Payment
Intangibles,  and Secured Party may curtail or terminate  said  authority at any
time after the  occurrence  and during the  continuance  of an Event of Default.
Upon the request of Secured  Party at any time after the  occurrence  and during

                                       20


the  continuance  of an Event of  Default,  Borrower  shall  notify the  Account
Debtors that the applicable Accounts, Chattel Paper and Payment Intangibles have
been assigned to Secured Party,  for its benefit and the ratable  benefit of the
Secured  Creditors,  and that payments in respect thereof shall be made directly
to Secured Party. Following the occurrence of an Event of Default, Secured Party
may in its own  name or in the  name of  others  communicate  with  the  Account
Debtors to verify with them to its satisfaction the existence,  amount and terms
of any Accounts, Chattel Paper or Payment Intangibles.

     Section 4.04  Proceeds.  If required by Secured Party at any time after the
occurrence and during the  continuance  of an Event of Default,  any payments of
Accounts, Instruments,  Chattel Paper and Payment Intangibles, when collected or
received  by  Borrower,  and any other cash or  non-cash  Proceeds  received  by
Borrower  upon  the  sale or  other  disposition  of any  Collateral,  shall  be
forthwith (and, in any event, within two Business Days) deposited by Borrower in
the exact form received, duly indorsed by Borrower to Secured Party if required,
in a  special  collateral  account  maintained  by  Secured  Party,  subject  to
withdrawal  by Secured  Party,  for its benefit  and the ratable  benefit of the
Secured  Creditors,  only, as hereinafter  provided,  and, until so turned over,
shall be held by Borrower in trust for  Secured  Party,  for its benefit and the
ratable  benefit  of the  Secured  Creditors,  segregated  from  other  funds of
Borrower.  All Proceeds from the disposition of Collateral  (including,  without
limitation,  Proceeds  constituting  collections  of  Accounts,  Chattel  Paper,
Instruments)  while held by Secured  Party (or by  Borrower in trust for Secured
Party,  for its benefit and the ratable benefit of the Secured  Creditors) shall
continue to be  collateral  security  for all of the  Obligations  and shall not
constitute payment thereof until applied as hereinafter provided. If an Event of
Default shall have occurred and be  continuing,  at any time at Secured  Party's
election,  Secured  Party shall apply all or any part of the funds on deposit in
said special  collateral  account on account of the Obligations in such order as
Secured  Party may elect,  and any part of such funds which Secured Party elects
not  so to  apply  and  deems  not  required  as  collateral  security  for  the
Obligations shall be paid over from time to time by Secured Party to Borrower or
to whomsoever may be lawfully entitled to receive the same.

     Section 4.05 Agents.  Secured Party or its successor or assigns may appoint
or  delegate  any  one or more  Persons  as  agent  to  perform  any act or acts
necessary  or incident  to any sale held by Secured  Party,  including,  without
limitation,  the posting of notices and the conduct of sale, but in the name and
on behalf of Secured Party or its successor or  substitute,  as  applicable.  If
Secured  Party or its  successors  or assigns  shall  have given  notice of sale
hereunder,  any successor or substitute to such Person thereafter  appointed may
complete the sale and the conveyance of the property pursuant thereto as if such
notice had been given by the successor or substitute conducting the sale.

     Section 4.06  Judicial  Foreclosure;  Receivership.  If an Event of Default
shall occur and be  continuing,  Secured Party shall have the right and power to
proceed  by a suit or  suits  in  equity  or at law,  whether  for the  specific
performance  of any  covenant or  agreement  herein  contained  or in aid of the
execution of any power herein granted,  or by any  foreclosure  hereunder or for
the sale of the  Mortgaged  Property  or the  Collateral  under the  judgment or
decree  of any court or courts  of  competent  jurisdiction,  or by the ex parte
appointment of a receiver  pending any foreclosure  hereunder or the sale of the
Mortgaged  Property  or the  Collateral  under the order of a court or courts of
competent  jurisdiction  or under  executory or other legal  process,  or by the
enforcement  of any  other  appropriate  legal or  equitable  remedy.  Any money

                                       21


advanced by Secured Party in connection  with any such  receivership  shall be a
demand obligation (which obligation  Borrower hereby expressly  promises to pay)
owing by  Borrower  to Secured  Party and shall bear  interest  from the date of
making such  advance by Secured  Party until paid at the post  default  rate set
forth in the Credit  Agreement.  In addition,  Borrower  agrees  that,  upon the
occurrence  and during the  continuance  of an Event of Default,  Secured  Party
shall as a matter of right be  entitled  to the  appointment  of a  receiver  or
receivers  for  all  or  any  part  of  the  Mortgaged  Property,  whether  such
receivership  be  incident  to a proposed  sale (or sales) of such  property  or
otherwise,  and  without  regard to the value of the  Mortgaged  Property or the
solvency of any person or persons liable for the payment of the Obligations, and
Borrower does hereby  consent to the  appointment of such receiver or receivers,
waives any and all  defenses to such  appointment,  and agrees not to oppose any
application  therefor by Secured Party and agrees that such appointment shall in
no manner  impair,  prejudice  or otherwise  affect the rights of Secured  Party
under  ARTICLE II hereof.  Borrower  expressly  waives  notice of a hearing  for
appointment  of a receiver and the  necessity  for bond or an  accounting by the
receiver.  Nothing  herein is to be  construed to deprive  Secured  Party or any
other  Secured  Creditor of any other  right,  remedy or privilege it may now or
hereafter have under the law to have a receiver appointed. Any money advanced by
Secured  Party  or any  other  Secured  Creditor  in  connection  with  any such
receivership  shall be a demand  obligation  (which  obligation  Borrower hereby
expressly  promises to pay) owing by Borrower to Secured  Party or such  Secured
Creditor and shall bear  interest  from the date of making such  advancement  by
Secured Party or such Secured  Creditor until paid, at the Post Default Rate set
forth in the Credit Agreement.

     Section 4.07  Foreclosure  for  Installments.  If an Event of Default shall
occur and be  continuing,  Secured  Party  shall also have the option to proceed
with  foreclosure in satisfaction of any  installments of the Obligations  which
have not been paid when due  either  through  the courts or by  proceeding  with
foreclosure in satisfaction of the matured but unpaid portion of the Obligations
as if under a full  foreclosure,  conducting the sale as herein provided as to a
portion of the Mortgaged  Property and without  declaring  the entire  principal
balance and accrued interest due; such sale may be made subject to the unmatured
portion of the Obligations, and any such sale shall not in any manner affect the
unmatured  portion of the Obligations,  but as to such unmatured  portion of the
Obligations  this  Agreement  shall  remain in full  force and  effect as to any
Mortgaged  Property  that  was not sold  just as  though  no sale had been  made
hereunder. It is further agreed that several sales of a portion of the Mortgaged
Property  may be made  hereunder  without  exhausting  the right of sale for any
unmatured part of the Obligations,  it being the purpose hereof to provide for a
foreclosure  and sale of the security for any matured portion of the Obligations
without  exhausting  the  power  to  foreclose  and sell  the  remainder  of the
Mortgaged Property for any subsequently maturing portion of the Obligations.

     Section 4.08 Separate Sales.  The Mortgaged  Property may be sold in one or
more parcels and to the extent  permitted by  applicable  law in such manner and
order as Secured Party,  in its sole  discretion,  may elect, it being expressly
understood and agreed that the right of sale arising out of any Event of Default
shall not be exhausted by any one or more sales.

                                       22


     Section 4.09  Possession  of Mortgaged  Property and  Collateral.  Borrower
agrees to the full extent that it lawfully may, that, in case one or more of the
Events of Default  shall have occurred and shall not have been  remedied,  then,
and in every such case,  Secured  Party  shall have the right and power to enter
into and upon and take  possession of all or any part of the Mortgaged  Property
or the Collateral in the possession of Borrower,  its successors or assigns,  or
its agents or servants, and may exclude Borrower, its successors or assigns, and
all Persons claiming under Borrower, and its agents or servants wholly or partly
therefrom;  and, holding the same,  Secured Party may use,  administer,  manage,
operate and control the  Mortgaged  Property or the  Collateral  and conduct the
business  thereof to the same extent as  Borrower,  its  successors  or assigns,
might at the time do and may exercise all rights and powers of Borrower,  in the
name,  place and stead of Borrower,  or  otherwise  as Secured  Party shall deem
best. All reasonable and customary costs,  expenses and liabilities  incurred by
Secured  Party  in  administering,  managing,  operating,  and  controlling  the
Mortgaged Property or the Collateral shall constitute a demand obligation (which
obligation  Borrower  hereby  expressly  promises  to pay) owing by  Borrower to
Secured Party and shall bear interest from date of expenditure until paid at the
Post  Default  Rate  set  forth in the  Credit  Agreement,  all of  which  shall
constitute a portion of the  Obligations  and shall be secured by this Agreement
and all other Security Instruments.

     Section 4.10 Remedies  Cumulative,  Concurrent and  Nonexclusive.  Each and
every right, power,  privilege and remedy shall be cumulative and in addition to
(i) those granted to Secured Party or any Secured Creditor under this Agreement,
any other Loan  Document  and in any other  instrument  or  agreement  securing,
evidencing or relating to the Obligations, (ii) all rights, remedies, powers and
privileges  of a secured  party under the  applicable  Uniform  Commercial  Code
(whether the Uniform Commercial Code is in effect in the jurisdiction where such
rights,  remedies,  powers  or  privileges  are  asserted)  or (iii)  any  other
applicable  law or otherwise  available at law or equity;  each and every right,
power,  privilege  and remedy  whether  specifically  herein  given or otherwise
existing  may be  exercised  from time to time and so often and in such order as
may be  deemed  expedient  by  Secured  Party or any  Secured  Creditor  and the
exercise,  or the beginning of the  exercise,  or the  abandonment,  of any such
right,  power,  privilege or remedy shall not be deemed a waiver of the right to
exercise,  at the same time or thereafter any other right,  power,  privilege or
remedy.  No delay or  omission by Secured  Party or any Secured  Creditor in the
exercise of any right,  power,  privilege or remedy shall impair any such right,
power, privilege or remedy or operate as a waiver thereof or of any other right,
power, privilege or remedy then or thereafter existing.

     Section  4.11 No Release of  Obligations.  Neither  Borrower  nor any other
Person  hereafter  obligated  for payment of all or any part of the  Obligations
shall be  relieved  of such  obligation  by reason of (a) the failure of Secured
Party to comply with any request of Borrower or any other Person so obligated to
foreclose the Lien of this  Agreement or to enforce any  provision  hereunder or
under the Credit Agreement; (b) the release, regardless of consideration, of the
Mortgaged  Property or the Collateral or any portion thereof or interest therein
or  the  addition  of  any  other  property  to the  Mortgaged  Property  or the
Collateral;  or (c) by any other act or occurrence  save and except the complete
payment of the  Obligations  and the  complete  fulfillment  of all  obligations
hereunder  or under the  Credit  Agreement  or any other  Loan  Document  of the
Obligations in accordance with their terms.

                                       23


     Section 4.12 No Impairment  of Security.  The Lien,  security  interest and
other security  rights of Secured Party  hereunder  shall not be impaired by any
indulgence,  moratorium or partial release  granted by Secured Party  including,
but not limited to, any renewal,  extension or modification  which Secured Party
or the Secured  Creditors may grant with respect to any of the  Obligations,  or
any surrender,  compromise,  partial release,  renewal,  extension,  exchange or
substitution  which Secured Party or the Secured  Creditors may grant in respect
of the Mortgaged  Property or any part thereof or any interest  therein,  or any
release or indulgence granted to any endorser, guarantor or surety of any of the
Obligations.

     Section  4.13  Release  of and  Resort  to  Collateral.  Secured  Party may
release, regardless of consideration,  any part of the Mortgaged Property or the
Collateral  without,  as to the  remainder,  in any  way  impairing,  affecting,
subordinating or releasing the Lien or security interest created in or evidenced
by this Agreement or its stature as a first and prior Lien and security interest
in and to the  Mortgaged  Property  and the  Collateral,  and without in any way
releasing or  diminishing  the  liability of any Person or entity liable for the
repayment of the Obligations. For payment of the Obligations,  Secured Party may
resort to any other  security  therefor  held by Secured Party in such order and
manner as Secured Party may elect.

     Section 4.14 Waiver of Redemption,  Notice and Marshalling of Assets,  Etc.
To the  fullest  extent  permitted  by  law,  Borrower  hereby  irrevocably  and
unconditionally  waives and  releases  (a) all  benefits  that  might  accrue to
Borrower  by  virtue  of any  present  or  future  moratorium  law or other  law
exempting the Mortgaged Property or the Collateral from attachment, levy or sale
on execution or providing for any  appraisement,  valuation,  stay of execution,
exemption from civil process, or extension of time for payment;  (b) all notices
of Secured  Party's  intention to accelerate  maturity of the  Obligations or of
Secured Party's election to exercise or its actual exercise of any right, remedy
or recourse  provided for hereunder or under the Credit  Agreement;  and (c) any
rights,  legal and  equitable,  to a marshalling  of assets or a sale in inverse
order of alienation.  Each successor and assign of Borrower,  including  without
limitation,  a holder of a Lien  subordinate to the Lien created hereby (without
implying that  Borrower has,  except as expressly  provided  herein,  a right to
grant an interest in, or a subordinate  Lien on, the  Mortgaged  Property or the
Collateral), by acceptance of its interest or Lien agrees that it shall be bound
by the above waiver, as if it gave the waiver itself. The right to plead any and
all  statutes  of  limitation  as a defense  to any  demand  secured  by or made
pursuant to this Agreement is hereby waived to the full extent permitted by law.
If any law referred to in this Agreement and now in force,  of which Borrower or
its successor or successors might take advantage despite the provisions  hereof,
shall hereafter be repealed or cease to be in force,  such law shall  thereafter
be deemed not to  constitute  any part of the  contract  herein  contained or to
preclude the operation or application of the  provisions  hereof.  Secured Party
may enforce its rights  hereunder  without  prior  judicial  process or judicial
hearing to the extent  permitted by applicable law, and to the extent  permitted
by law, Borrower expressly waives any and all legal rights which might otherwise
require Secured Party to enforce its rights by judicial process.  To the fullest
extent permitted by law,  Borrower waives and agrees not to assert any rights or
privileges  which it may acquire under the Uniform  Commercial Code or any other
applicable law.  Borrower shall remain liable for any deficiency if the proceeds
of any sale or other  disposition  of the Mortgaged  Property or the  Collateral

                                       24


conducted  in  accordance  with  applicable  law  are  insufficient  to pay  its
Obligations and the reasonable fees and disbursements of any attorneys  employed
by Secured Party and any Secured Creditor to collect such  deficiency.  Payments
to be made by Borrower  under any Loan Document are to be made without  defense,
deduction, recoupment, set-off, or counterclaim.

     Section 4.15 Discontinuance of Proceedings.  In case Secured Party (and, to
the extent  necessary  or  appropriate,  the  Administrative  Agent)  shall have
proceeded to invoke any right,  remedy or recourse permitted  hereunder or under
the Credit  Agreement and shall  thereafter elect to discontinue or abandon same
for any reason,  Secured Party (and the Administrative Agent at the direction of
the Secured  Party)  shall have the  unqualified  right so to do and, in such an
event,  Borrower and Secured  Party shall be restored to their former  positions
with respect to the  Obligations,  this  Agreement,  the Credit  Agreement,  the
Mortgaged Property and the Collateral and otherwise,  and the rights,  remedies,
recourses and powers of Secured  Party shall  continue as if same had never been
invoked.

     Section  4.16  Application  of  Proceeds.  The  proceeds of any sale of the
Mortgaged  Property or the  Collateral  or any part thereof and all other monies
received by Secured Party in any proceedings for the enforcement  hereof,  whose
application has not elsewhere  herein been  specifically  provided for, shall be
applied  first to the  payment of all  reasonable  expenses  incurred by Secured
Party incident to the enforcement of this Agreement, the Credit Agreement or any
of the Obligations (including, without limiting the generality of the foregoing,
expenses of any entry or taking of  possession,  of any sale,  of  advertisement
thereof, and of conveyances, and court costs, reasonable compensation of agents,
and reasonable legal fees), and to the payment of all other reasonable  charges,
expenses,  liabilities and advances incurred or made by Secured Party under this
Agreement or in executing any trust or power hereunder; and then as set forth in
the Credit Agreement.

     Section  4.17  Resignation  of  Operator.  In  addition  to all  rights and
remedies  under this  Agreement,  at law and in equity,  if any Event of Default
shall occur and be  continuing  and Secured  Party shall  exercise  any remedies
under this  Agreement  with respect to any portion of the Mortgaged  Property or
the  Collateral  (or  Borrower  shall  transfer  any  Mortgaged  Property or the
Collateral  "in lieu of"  foreclosure),  Secured  Party  shall have the right to
request that any operator of any Mortgaged  Property which is either Borrower or
any Affiliate of Borrower resign as operator under the joint operating agreement
applicable  thereto,  and no later than 60 days after receipt by Borrower of any
such  request,  Borrower  shall  resign (or cause such other party to resign) as
operator of such Mortgaged Property.

     Section  4.18  Indemnity.  IN  CONNECTION  WITH ANY ACTION TAKEN BY SECURED
PARTY PURSUANT TO THIS AGREEMENT,  SECURED PARTY, EACH ISSUING BANK, THE SECURED
CREDITORS AND THEIR OFFICERS,  DIRECTORS,  EMPLOYEES,  REPRESENTATIVES,  AGENTS,
ATTORNEYS,  ACCOUNTANTS AND EXPERTS ("INDEMNIFIED  PARTIES") SHALL NOT BE LIABLE
FOR ANY LOSS  SUSTAINED BY BORROWER  RESULTING  FROM AN  ASSERTION  THAT SECURED
PARTY HAS RECEIVED  FUNDS FROM THE PRODUCTION OF  HYDROCARBONS  CLAIMED BY THIRD
PERSONS  OR ANY ACT OR  OMISSION  OF ANY  INDEMNIFIED  PARTY  IN  ADMINISTERING,
MANAGING,  OPERATING OR  CONTROLLING  THE MORTGAGED  PROPERTY OR THE  COLLATERAL

                                       25


INCLUDING  SUCH  LOSS  WHICH  MAY  RESULT  FROM THE  ORDINARY  NEGLIGENCE  OF AN
INDEMNIFIED PARTY UNLESS SUCH LOSS IS CAUSED BY THE WILLFUL  MISCONDUCT OR GROSS
NEGLIGENCE  OF AN  INDEMNIFIED  PARTY,  NOR  SHALL  SECURED  PARTY AND ANY OTHER
INDEMNIFIED  PARTY BE OBLIGATED TO PERFORM OR DISCHARGE ANY OBLIGATION,  DUTY OR
LIABILITY OF BORROWER.  BORROWER  SHALL AND DOES HEREBY AGREE TO INDEMNIFY  EACH
INDEMNIFIED  PARTY FOR, TO DEFEND AND TO HOLD EACH  INDEMNIFIED  PARTY  HARMLESS
FROM,  ANY AND ALL  LIABILITY,  LOSS OR DAMAGE WHICH MAY OR MIGHT BE INCURRED BY
ANY  INDEMNIFIED  PARTY BY REASON OF THIS AGREEMENT OR THE EXERCISE OF RIGHTS OR
REMEDIES HEREUNDER,  INCLUDING WITHOUT LIMITATION SUCH LIABILITY, LOSS OR DAMAGE
AS MAY OR MIGHT ARISE OUT OF OR BE CAUSED BY THE ORDINARY  NEGLIGENCE  OF ANY OF
THE INDEMNIFIED PARTIES, UNLESS SUCH LOSS IS CAUSED BY THE WILLFUL MISCONDUCT OR
GROSS  NEGLIGENCE  OF AN  INDEMNIFIED  PARTY.  SHOULD  SECURED  PARTY  MAKE  ANY
EXPENDITURE  ON  ACCOUNT  OF ANY SUCH  LIABILITY,  LOSS OR  DAMAGE,  THE  AMOUNT
THEREOF, INCLUDING COSTS, EXPENSES AND REASONABLE OUT OF POCKET ATTORNEYS' FEES,
SHALL  BE A  DEMAND  OBLIGATION  (WHICH  OBLIGATION  BORROWER  HEREBY  EXPRESSLY
PROMISES TO PAY) OWING BY BORROWER TO SECURED PARTY AND SHALL BEAR INTEREST FROM
THE DATE EXPENDED UNTIL PAID AT THE POST-DEFAULT RATE AS SET FORTH IN THE CREDIT
AGREEMENT,  SHALL BE A PART OF THE  OBLIGATIONS  AND  SHALL BE  SECURED  BY THIS
AGREEMENT AND ANY OTHER SECURITY INSTRUMENT.  THE LIABILITIES OF BORROWER AS SET
FORTH IN THIS SECTION 4.18 SHALL SURVIVE THE TERMINATION OF THIS AGREEMENT.

Section 4.19 Secured Party Not "Secured  Party-In-Possession".  It is understood
and agreed that neither the  assignment  of  Hydrocarbons,  products  therefrom,
revenues and proceeds to Secured Party pursuant to Section 2.01 nor the exercise
by Secured Party of any of its rights or remedies  hereunder  shall be deemed to
make Secured Party a "Secured  Party-in-possession"  or otherwise responsible or
liable  in any  manner  with  respect  to the  Mortgaged  Property  or the  use,
occupancy,  enjoyment  or  operation  of all or any portion  thereof,  nor shall
appointment of a receiver for the Mortgaged Property by any court at the request
of Secured Party or by agreement  with Borrower or the entering into  possession
of the Mortgaged Property or any part thereof by such receiver be deemed to make
Secured Party a "Secured Party-in-possession" or otherwise responsible or liable
in any manner with  respect to the  Mortgaged  Property  or the use,  occupancy,
enjoyment or operation of all or any portion thereof.

                                   ARTICLE V
                                Attorney-in-Fact

     Section 5.01 Secured Party  Attorney-In-Fact.  Borrower hereby  irrevocably
constitutes and appoints Secured Party the attorney-in-fact of Borrower,  and in
such capacity,  Secured Party, its counsel or its representative,  may from time
to time, execute, deliver and file with the appropriate filing officer or office
such  security  agreements,   financing  statements,   continuation  statements,
amendments,  other filing or recording documents or instruments as Secured Party

                                       26


may  request or require,  in such form as Secured  Party  reasonably  determines
appropriate,  in order to impose, perfect, protect, preserve the priority of, or
enforce, the Liens on the Collateral.

                                   ARTICLE VI
                                  Miscellaneous

     Section 6.01  Instrument  Construed as Mortgage,  Etc;  Perpetuities.  This
Agreement  may be  construed  as a deed of trust,  mortgage,  chattel  mortgage,
conveyance,   assignment,   security  agreement,  pledge,  financing  statement,
hypothecation  or contract,  or any one or more of them,  as necessary  fully to
effectuate  the Lien hereof and the  purposes and  agreements  herein set forth.
Notwithstanding  anything to the contrary  contained  herein, if any interest in
real  property  granted  pursuant  to this  Agreement  does  not  vest  upon the
execution  and delivery of this  Agreement,  it shall vest, if at all, not later
than 20 years after the execution and delivery of this Agreement.

     Section 6.02 Release of Mortgage.  If all Obligations  secured hereby shall
be  paid  in  full  in  accordance  with  the  Credit  Agreement  and all of the
Commitments of the Lenders and all Letters of Credit under the Credit  Agreement
are terminated,  Secured Party shall forthwith cause reconveyance,  satisfaction
and discharge of this  Agreement to be entered upon the record and shall execute
and  deliver  or  cause  to  be  executed  and  delivered  such  instruments  of
reconveyance,  satisfaction and  reassignment as may be appropriate.  Otherwise,
this Agreement shall remain and continue in full force and effect.

     Section  6.03   Severability.   If  any  provision  hereof  is  invalid  or
unenforceable in any  jurisdiction,  the other provisions hereof shall remain in
full force and effect in such  jurisdiction and the remaining  provisions hereof
shall be liberally  construed in order to effectuate the provisions  hereof, and
the invalidity or  unenforceability  of any provision hereof in any jurisdiction
shall not affect the  validity or  enforceability  of any such  provision in any
other jurisdiction.

     Section 6.04 Partial  Releases.  If any of the Mortgaged  Property shall be
sold,  transferred  or  otherwise  disposed  of  by  Borrower  in a  transaction
permitted by the Credit  Agreement,  then Secured Party, at the request and sole
expense of Borrower, shall promptly execute and deliver to Borrower all releases
or other  documents  reasonably  necessary or  desirable  for the release of the
Liens created hereby on the Mortgaged Property.

     Section 6.05 Successors and Assigns of Parties. The term "Secured Party" as
used herein shall mean and include  Community  Banks of Colorado,  a division of
NBH Bank,  N.A., and its successors and assigns acting as  Administrative  Agent
for the benefit of any legal  owner,  holder,  assignee or pledgee of any of the
Obligations  secured  hereby.  The terms  used to  designate  Secured  Party and
Borrower shall be deemed to include the respective heirs, legal representatives,
successors and assigns of such parties.

     Section 6.06 Satisfaction of Prior Encumbrance. To the extent that proceeds
of the Credit Agreement are used to pay indebtedness  secured by any outstanding
Lien,  security  interest,  charge or prior  encumbrance  against the  Mortgaged
Property,  such  proceeds  have been  advanced  by Secured  Party at  Borrower's



                                       27


request,  and Secured Party shall be subrogated to any and all rights,  security
interests  and Liens  owned by any owner or  holder of such  outstanding  Liens,
security interests, charges or encumbrances, irrespective of whether said Liens,
security  interests,  charges or encumbrances are released,  and it is expressly
understood that, in  consideration of the payment of such other  indebtedness by
Secured  Party,  Borrower  hereby  waives and releases all demands and causes of
action  for  offsets  and  payments  to,  upon and in  connection  with the said
indebtedness.

     Section 6.07 Subrogation of Secured Party. This Agreement is made with full
substitution  and subrogation of Secured Party and its successors and assigns in
and to all  covenants  and  warranties  by  others  heretofore  given or made in
respect of the Mortgaged Property or any part thereof.

     Section 6.08 Nature of  Covenants.  The  covenants  and  agreements  herein
contained shall constitute covenants running with the land and interests covered
or affected hereby and shall be binding upon the heirs,  legal  representatives,
successors and assigns of the parties hereto.

     Section 6.09 Notices. All notices,  requests,  consents,  demands and other
communications  required or permitted hereunder shall be in writing and shall be
deemed  sufficiently  given or furnished if delivered by registered or certified
United States mail,  postage prepaid,  or by personal service (including express
or courier  service) at the  addresses  specified  at the end of this  Agreement
(unless changed by similar notice in writing given by the particular party whose
address is to be changed).  Any such notice or communication  shall be deemed to
have been  given  either  at the time of  personal  delivery  or, in the case of
delivery  at the  address  and in the  manner  provided  herein,  upon  receipt;
provided  that,  service of notice as required by the laws of any state in which
portions of the  Mortgaged  Property  may be situated  shall for all purposes be
deemed  appropriate  and  sufficient  with the giving of such  notice.  Borrower
requests that a copy of any notice of sale or combined notice  hereunder be sent
to it by express or courier service at the address of Borrower set forth below.

     Section 6.10  Counterparts.  This  Agreement  is being  executed in several
counterparts, all of which are identical, except that to facilitate recordation,
if the Mortgaged  Property is situated in more than one county,  descriptions of
only those portions of the Mortgaged  Property  located in the county in which a
particular  counterpart is recorded shall be attached as a Schedule  thereto.  A
Schedule containing a description of all Mortgaged Property wheresoever situated
will be  attached  to that  certain  counterpart  to be  attached to a Financing
Statement  and filed with the  Secretary  of State of  Colorado  in the  Uniform
Commercial  Code Records.  Each of such  counterparts  shall for all purposes be
deemed to be an original and all such counterparts shall together constitute but
one and the same instrument.

     Section 6.11  Governing Law.  INSOFAR AS PERMITTED BY OTHERWISE  APPLICABLE
LAW, THIS AGREEMENT AND THE OBLIGATIONS SHALL BE CONSTRUED UNDER AND GOVERNED BY
THE LAWS OF THE STATE OF COLORADO  (EXCLUDING  CHOICE OF LAW AND CONFLICT OF LAW
RULES);  PROVIDED,  HOWEVER,  THAT, WITH RESPECT TO ANY PORTION OF THE MORTGAGED

                                       28


PROPERTY OR COLLATERAL LOCATED OUTSIDE OF THE STATE OF COLORADO, THE LAWS OF THE
PLACE IN WHICH  SUCH  PROPERTY  IS OR IS DEEMED TO BE  LOCATED  IN, OR  OFFSHORE
ADJACENT TO (AND STATE LAW MADE  APPLICABLE AS A MATTER OF FEDERAL  LAW),  SHALL
APPLY TO THE EXTENT OF PROCEDURAL AND SUBSTANTIVE  MATTERS  RELATING ONLY TO THE
CREATION,  PERFECTION,  FORECLOSURE  OF LIENS  AND  ENFORCEMENT  OF  RIGHTS  AND
REMEDIES AGAINST THE MORTGAGED PROPERTY OR COLLATERAL.

     Section  6.12   Exculpation   Provisions.   EACH  OF  THE  PARTIES   HERETO
SPECIFICALLY  AGREES THAT IT HAS A DUTY TO READ THIS AGREEMENT;  AND AGREES THAT
IT IS CHARGED WITH NOTICE AND KNOWLEDGE OF THE TERMS OF THIS AGREEMENT;  THAT IT
HAS IN FACT READ THIS  AGREEMENT  AND IS FULLY  INFORMED AND HAS FULL NOTICE AND
KNOWLEDGE OF THE TERMS,  CONDITIONS AND EFFECTS OF THIS  AGREEMENT;  THAT IT HAS
BEEN  REPRESENTED  BY  INDEPENDENT  LEGAL COUNSEL OF ITS CHOICE  THROUGHOUT  THE
NEGOTIATIONS  PRECEDING  ITS EXECUTION OF THIS  AGREEMENT;  AND HAS RECEIVED THE
ADVICE OF ITS ATTORNEY IN ENTERING INTO THIS  AGREEMENT;  AND THAT IT RECOGNIZES
THAT  CERTAIN OF THE TERMS OF THIS  AGREEMENT  RESULT IN ONE PARTY  ASSUMING THE
LIABILITY  INHERENT IN SOME ASPECTS OF THE  TRANSACTION  AND RELIEVING THE OTHER
PARTY OF ITS  RESPONSIBILITY  FOR SUCH  LIABILITY.  EACH PARTY HERETO AGREES AND
COVENANTS  THAT IT WILL  NOT  CONTEST  THE  VALIDITY  OR  ENFORCEABILITY  OF ANY
EXCULPATORY  PROVISION  OF THIS  AGREEMENT  ON THE  BASIS  THAT THE PARTY HAD NO
NOTICE  OR   KNOWLEDGE  OF  SUCH   PROVISION  OR  THAT  THE   PROVISION  IS  NOT
"CONSPICUOUS."

     Section 6.13 Terms  Generally;  Rules of  Construction.  The definitions of
terms herein  shall apply  equally to the singular and plural forms of the terms
defined.  Whenever  the  context may  require,  any  pronoun  shall  include the
corresponding  masculine,  feminine  and neuter  forms.  . The words  "include",
"includes" and "including" shall be deemed to be followed by the phrase "without
limitation".  The word "will"  shall be  construed  to have the same meaning and
effect as the word  "shall".  Unless  the  context  requires  otherwise  (a) any
definition of or reference to any agreement, instrument or other document herein
shall be construed as referring to such agreement,  instrument or other document
as from time to time amended, supplemented or otherwise modified (subject to any
restrictions on such amendments, supplements or modifications set forth herein),
(b) any reference  herein to any law shall be construed as referring to such law
as amended, modified,  codified or reenacted, in whole or in part, and in effect
from time to time, (c) any reference  herein to any Person shall be construed to
include  such  Person's  successors  and assigns  (subject  to the  restrictions
contained herein), (d) the words "herein",  "hereof" and "hereunder",  and words
of similar import, shall be construed to refer to this Agreement in its entirety
and  not  to  any  particular   provision  hereof,   (e)  with  respect  to  the
determination of any time period, the word "from" means "from and including" and
the word "to" means "to and including" and (f) any reference herein to Articles,
Sections and Schedules  shall be construed to refer to Articles and Sections of,
and Schedules to, this  Agreement.  No provision of this  Agreement or any other

                                       29


Loan  Document  shall be  interpreted  or  construed  against any Person  solely
because such Person or its legal representative drafted such provision.

     Section  6.14  Recording.  Borrower  will  cause  this  Agreement  and  all
amendments and supplements thereto and substitutions  therefor and all financing
statements and continuation  statements relating thereto to be recorded,  filed,
re-recorded  and  refiled in such a manner and in such  places as Secured  Party
shall reasonably request and will pay all such recording,  filing,  re-recording
and refiling taxes, fees and other charges.

     Section 6.15 Application of Payments to Certain Obligations. If any part of
the Obligations  cannot be lawfully  secured by this Agreement or if any part of
the  Mortgaged  Property  cannot be  lawfully  subject to the lien and  security
interest  hereof to the full extent of the  Obligations,  then all payments made
shall be applied on said Obligations  first in discharge of that portion thereof
which is not secured by this Agreement.

     Section 6.16 Financing  Statement;  Fixture Filing. This Agreement shall be
effective as a financing statement filed as a fixture filing with respect to all
fixtures included within the Mortgaged  Property and is to be filed or filed for
record  in the real  estate  records,  Agreement  records  or other  appropriate
records of each jurisdiction where any part of the Mortgaged Property (including
said  fixtures)  are  situated.  This  Agreement  shall also be  effective  as a
financing statement covering As-extracted  collateral,  including oil and gas or
the like and  accounts  financed  at the  wellhead or minehead of wells or mines
located on the properties  subject to the Uniform  Commercial  Code and is to be
filed  for  record  in the  real  estate  records,  Mortgage  records  or  other
appropriate  records  of each  jurisdiction  where  any  part  of the  Mortgaged
Property is situated.  Borrower hereby  authorizes  Secured Party to file one or
more financing or continuation statements,  and amendments thereto,  relative to
all or any part of the Mortgaged  Property  without the signature of Borrower at
any time after the execution of this Agreement,  and hereby ratifies any thereof
filed prior to the  execution of this  Agreement.  In addition,  Borrower  shall
execute  and  deliver  to Secured  Party,  upon  Secured  Party's  request,  any
financing  statements or amendments  thereof or continuation  statements thereto
that Secured  Party may require to perfect a security  interest in said items or
types of  property.  Borrower  shall pay all costs  associated  with filing such
instruments. In that regard, the following information is provided:





      Name of Borrower: Synergy Resources Corporation

      Mailing Address of Borrower
      & County of Residence
      (chief executive office): 20203 Highway 60
                                Platteville, CO 80651
                                Attention:  Edward Holloway, CEO and Director
                                Facsimile:  970-737-1045

                                       30


      Jurisdiction of incorporation
      Organizational ID #:    Colorado/ID No. 20051109690

      Name of Secured Party:  Community Banks of Colorado, as Administrative
                              Agent

      Mailing Address of
      Secured Party:    7800 E. Orchard
                  Greenwood Village, Colorado 80111
                  Attention:  Sarah Burchett
                  Facsimile:  855-621-4007
                  Telephone:  303-892-8700

      Owner of Record of
      Mortgaged Property:     Borrower

                                       31



      WITNESS THE EXECUTION HEREOF, as of the Effective Date.

                                          BORROWER:



                                          SYNERGY RESOURCES CORPORATION





                                          By: /s/ Frank L. Jennings
                                             ---------------------------

                                                Frank L. Jennings,

                                                Chief Financial Officer

                                       32




The name and address of Borrower is:

      Synergy Resources Corporation
      20203 Highway 60
      Platteville, CO 80651
      Phone:      970-737-1073
      Fax:  970-737-1045
      Attn:  Edward Holloway

The name and address of Secured Party is:

      Community Banks of Colorado
      as Administrative Agent
      7800 E. Orchard
      Greenwood Village, Colorado  80111
      Phone:      303-892-8702
      Fax:  855-621-4007
      Attn:  Sarah Burchett

                                       33


                                    Exhibit A

     1. Capitalized terms used herein without  definition shall have the meaning
ascribed thereto in the Mortgage.

     2. The terms  "Working  Interest" and "WI" as used herein with respect to a
lease,  shall mean the interest in and to the full and entire  leasehold  estate
created under and by virtue of the lease described as to the described lands and
formations  (or as to all  formations if no formation is described)  and arising
therefrom,  insofar as said interest in said  leasehold  estate is burdened with
the obligation to bear and pay costs of operations,  without regard of any valid
lessor's royalties,  overriding royalties or similar burdens, and without regard
to the percent of the mineral  estate  underlying the lands covered by the lease
owned by the lessor(s) of the referenced lease.

     3. The terms "Net Revenue  Interest"  and "NRI" as used herein with respect
to a lease  shall  mean the  interest  in and to  applicable  production  of all
Hydrocarbons  produced,  saved  and sold  from,  under or by virtue of the lease
described  herein  as to  the  described  lands  and  formations  (or  as to all
formations if no formation is described).

     4. The terms  "Working  Interest" and "WI" as used herein with respect to a
well,  unit,  pool or communitized  area,  shall mean the interest in and to the
well or the full and entire unitized,  pooled or communitized area created under
and by virtue of each of the described unitization,  pooling, communitization or
similar  agreements,  and all  rights of every  kind and  character  appurtenant
thereto,  arising  therefrom  insofar  as the  said  interest  in  said  well or
unitized, pooled, communitized or other interest is burdened with the obligation
to bear and pay  costs of  operations,  without  regard  to any  valid  lessor's
royalties, overriding royalties or similar burdens.

     5. The terms "Net Revenue  Interest"  and "NRI" as used herein with respect
to a well,  unit, pool or communitized  area,  shall mean the interest in and to
applicable production of all Hydrocarbons  produced,  saved and sold from, under
or by virtue of such well or such unitized, pooled or communitized area.

     7. The Mortgage covers all right, title and interest of Debtor (whether now
owned or hereafter acquired by operation of law or otherwise) in and to the land
specifically described in this Exhibit A and the land described in or covered by
the  leases,  licenses,  subleases,   sublicenses,   easements,   rights-of-way,
agreements  and other  documents  and  instruments  described  in this Exhibit A
whether or not such land is  specifically  described  in this Exhibit A; and any
references to specific lands, depth limitations,  horizons,  formations,  zones,
unit  designations,  unit  tract  descriptions  and  descriptions  of  undivided
leasehold  interests,  "Working  Interest" or "WI" and "Net Revenue Interest" or
"NRI"  contained  in this  Exhibit A are for the purposes of defining the nature
and extent of Debtor's  warranties  and shall not be deemed to limit or restrict
the  interests  covered  by the  Mortgage  or the liens and  security  interests
created thereby.

     8. This  Exhibit A consists of this  Preamble and the  following  subparts:
Exhibit A-1 (55 pages),  Exhibit A-2 (79 pages),  Exhibit A-3 (1 page),  Exhibit
A-4 (9 pages) and Exhibit A-5 (1 page).

     9. To facilitate  recording,  only the relevant  subparts of this Exhibit A
may be filed for recording as follows:

            County:                 Relevant subparts for filing:

            WELD                    Exhibits A-1, A-2, and A-4
            BOULDER                 Exhibits A-3 and A-5