Unassociated Document


    
      
        
          
            

          

          Exhibit 10.22

           

          Plains

          Marketing,
L.P.

          10 Desta
Drive. Suite 200E | Midland, Texas 7870 | Phone: (432) 683-8622 | Fax: (432)
683-0849

          


          September
4, 2009

          


          Pioneer
Natural Resource USA

          5205 N
O'Connor Blvd., Suite 900

          Irving,
TX 75039

          Fax/email:
(972) 969 3574

          


          RE: PMLP
Contract: 2585-1013

          


          Effective
on and after September 1, 2009, please amend the subject contract by deleting
the "Price" clause and inserting the "Price" clause as follows:

          


          
            	
                    PRICE:

                  	
                    For
      the crude oil sold and delivered hereunder, PMLP agrees to pay a price per
      barrel which shall be calculated as
follows:

                  


          

          


          
            	
                     
      

                  	
                    a.

                  	
                    Determine
      arithmetic average of the daily settlement price for the "Light Sweet
      crude Oil" prompt month contract reported by the New York Mercantile
      Exchange (NYMEC) from the first day of the delivery month through the last
      day of the delivery month, including weekends and U.S. holidays with the
      previous day's settlement price applying to weekends and U.S.
      holidays.

                  


          

          


          
            	
                     
      

                  	
                    b.

                  	
                    To
      the number determined in the foregoing subparagraph (a.), add the
      arithmetic average of the daily settlement price for the crude contract
      reported by the NYMEX from the day the delivery month becomes the prompt
      trading month through the last day of the trading for the delivery month,
      market open quotes only, less the average of the daily settlement price
      for the second month NYMEX crude contract trading over the same period,
      times a percentage calculated from the number of days starting with the
      first day of the delivery month and ending with the day preceding the
      first trade day after the NYMEX crude contract expiration date during the
      delivery month, divided by the number of days in the delivery
      month.

                  


          

          


          
            	
                     
      

                  	
                    c.

                  	
                    To
      the number determined in the subparagraph (a. and b.) above, add the
      arithmetic average of the daily settlement price for the crude contract
      reported by the NYMEX from the day the delivery month becomes the prompt
      trading month through the last day of trading for the delivery month,
      market open quotes only, less the average of the daily settlement price
      for the third month NYMEX crude contract trading over the same period,
      times a percentage calculated from the number of days starting with first
      trade day after the NYMEX crude contract expiration date during the
      delivery month and ending with the last day of the delivery month, divided
      by the number of days in the delivery
month.

                  


          

          


          
            	
                     
      

                  	
                    d.

                  	
                    To
      the number determined in the foregoing subparagraph (c.) add the average
      of the daily high and low quotes for WTI (Midland) and subtract the
      average of the daily high and low quotes for WTI, (Cushing) for the month
      of delivery in Platt's Crude Oil
      Market Wire "America's Crude Oil Assessments" based on pricing
      assessed for the days the U.S. crude oil market is open (weekends and U.S.
      holidays excluded) during the period beginning with the 26th
      day of the month that is two (2) months prior to delivery through and
      including the 25th
      day of the month that is immediately prior to the month of delivery,
      provided, however, that if the first day of the period falls on a day
      which the U.S. crude oil market is closed, the period shall begin on the
      first trading day thereafter, and if the last day of the period falls on a
      day on which the U. S. crude oil market is closed, the period shall end on
      the last trading day prior thereto.

                  


          

          


          
            	
                     
      

                  	
                    e.

                  	
                    To
      the number determined in the forgoing subparagraph (d.), subtract the net
      of the following: (Sum of the Midland WTS differential minus Midland WTI
      Differential divided by 14). The number determined pursuant to this
      subparagraph (e.) and subparagraphs (a.), (b.), (c.) and (d.) shall be the
      base price per barrel of crude oil.
(X1585)

                  


          

          


          
            	
                     
      

                  	
                    f.

                  	
                    To
      the number determined pursuant to subparagraphs (a.) through (e.),
      subtract the amount indicated on Exhibit "A", attached
    hereto.

                  


          


          
            
               


            

            
               


              
                

              

            

            
               


            

          


          Except as
herein amended, all other terms and conditions of said contract shall remain in
full force and effect.

          


          This
fax/email evidences our understanding of the entire agreement and shall
constitute the formal contract.

          


          Please
acknowledge by return fax/email your acceptance of the agreement to the terms
stated herein. If no response from the Counterparty is received within five (5)
business days, the contract is considered binding. These terms and conditions
will be deemed accepted if Pioneer Natural Resources Usa begins performance of
its obligations hereunder.

          


          The
parties agree that faxed/emailed documents shall be deemed to be admissible as
primary evidence in a court of law as original or as counterparts of the
original documents, either of which is to be retained an available for
inspection.

          


          Very
truly yours,

          


          
            	
                    PLAINS
      MARKETING, L.P.

                  	 
      
	
                    By
      Plains Marketing GP Inc.

                  	 
      
	
                    Its
      General Partner

                  	 
      
	 
      	 
      
	
                    /s/
      Mike A. Weller

                  	
                    /s/
      Hershal K. Wolfe

                  
	 
      	 
      
	
                    Mike
      A. Weller

                  	
                    Hershal
      K. Wolfe

                  
	
                    Senior
      crude Oil Representative

                  	
                    Vice
      President Marketing

                  


          

        

         

        
          
            
            

          

          
            
            

            
              

            

          

          
            
            

          

        

         

        Exhibit
"A"

        


        Sep 04,
2009

        Page 1 of
13

        


        
          	
                  Plains
      Contract:

                	 	
                  2582-1013

                	 	
                  Effective:
      09-01-2009

                	 	
                  Plains
      Marketing L.P.

                	 
      


        

        
           

          
            
              	
                      PM

                      Lease

                      ‡=inact

                    	 
      	 
      	 
      	
                      Lease

                    	 
      	
                      Operator

                    	 
      	
                      County/Parrish

                    	 	 
      	 	
                      Price

                    	 
      	
                      Price

                      Method

                    	 
      	
                      Applicable

                      Premium

                      Or

                      (Deduct)

                    	 
      	
                      Fuel

                      Adjustment

                    	 
      	
                      Percent

                    	 
      	
                      Gravity

                    	 
      	
                      State

                      Lease

                    
	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	
                      139893

                    	 
      	 
      	 
      	
                      T L
      WALLACE

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      DAWSON

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      016168

                    
	
                      128758

                    	 
      	 
      	 
      	
                      ATKINSON,
      W.B. C

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      014077

                    
	
                      128749

                    	 
      	 
      	 
      	
                      BIGBY
      WA B

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      008044

                    
	
                      128750

                    	 
      	 
      	 
      	
                      BRYANS
      & COX

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      0856

                    
	
                      128760

                    	 
      	 
      	 
      	
                      BRYANS
      M.V. A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5338

                    
	
                      128759
      ‡

                    	 
      	 
      	 
      	
                      COX
      X.B. B

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      014091

                    
	
                      142207

                    	 
      	
                      (20)

                    	 
      	
                      DAVENPORT
      RS "B" 5, 11,13,17

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      0861

                    
	
                      142206

                    	 
      	
                      (20)

                    	 
      	
                      DAVENPORT
      RS -A- 15

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      0861

                    
	
                      128751

                    	 
      	
                      (20)

                    	 
      	
                      DAVENPORT
      RS A 2,6,9

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      0861

                    
	
                      059989

                    	 
      	 
      	 
      	
                      F A
      WILDE

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5137

                    
	
                      128757
      ‡

                    	 
      	 
      	 
      	
                      REYNOLDS
      CC

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      014076

                    
	
                      054118

                    	 
      	 
      	 
      	
                      SDU
      133A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059688

                    	 
      	 
      	 
      	
                      SDU
      135A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059689

                    	 
      	 
      	 
      	
                      SDU
      136A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054076

                    	 
      	 
      	 
      	
                      SDU
      156A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059750

                    	 
      	 
      	 
      	
                      SDU
      167A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054272

                    	 
      	 
      	 
      	
                      SDU
      170A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059764

                    	 
      	 
      	 
      	
                      SDU
      TR 64-A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054183

                    	 
      	 
      	 
      	
                      SDU
      TRACT 107 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128547

                    	 
      	 
      	 
      	
                      SDU
      TRACT 108 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128906

                    	 
      	 
      	 
      	
                      SDU
      TRACT 109 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      055364

                    	 
      	 
      	 
      	
                      SDU
      TRACT 110

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059988

                    	 
      	 
      	 
      	
                      SDU
      TRACT 110 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128561

                    	 
      	 
      	 
      	
                      SDU
      TRACT 111 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128545

                    	 
      	 
      	 
      	
                      SDU
      TRACT 112 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054189

                    	 
      	 
      	 
      	
                      SDU
      TRACT 132 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054186

                    	 
      	 
      	 
      	
                      SDU
      TRACT 134 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128559

                    	 
      	 
      	 
      	
                      SDU
      TRACT 137 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      055365

                    	 
      	 
      	 
      	
                      SDU
      TRACT 138 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128930

                    	 
      	 
      	 
      	
                      SDU
      TRACT 139 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 	
                      TX

                    	 	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    


            


            
              
                 


              

              
                 


                
                  

                

              

              
                 


              

            

          

           

          
            Exhibit
"A"

            


            Sep 04,
2009

            Page 2 of
13

            


            
              	
                      Plains
      Contract:

                    	 	
                      2582-1013

                    	 	
                      Effective:
      09-01-2009

                    	 	
                      Plains
      Marketing L.P.

                    	 
      


            

            
               

            

          

          
            
              	 
      

                      PM

                      Lease

                      ‡=inact

                    	 	 	 	 
      

                      Lease

                    	 	 
      

                      Operator

                    	 	 
      

                      County/Parrish

                    	 	 	 	 
      

                      Price

                    	 	 
      

                      Price

                      Method

                    	 	
                      Applicable

                      Premium

                      Or

                      (Deduct)

                    	 	
                      Fuel

                      Adjustment

                    	 	
                      Percent

                    	 	
                      Gravity

                    	 	
                      State

                      Lease

                    
	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	
                      128554

                    	 
      	 
      	 
      	
                      SDU
      TRACT 140 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128557

                    	 
      	 
      	 
      	
                      SDU
      TRACT 141 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128553

                    	 
      	 
      	 
      	
                      SDU
      TRACT 142 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128566

                    	 
      	 
      	 
      	
                      SDU
      TRACT 142 B

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      055136

                    	 
      	 
      	 
      	
                      SDU
      TRACT 144 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054188

                    	 
      	 
      	 
      	
                      SDU
      TRACT 157 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128555

                    	 
      	 
      	 
      	
                      SDU
      TRACT 166 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128558

                    	 
      	 
      	 
      	
                      SDU
      TRACT 168 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128551

                    	 
      	 
      	 
      	
                      SDU
      TRACT 169 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128552

                    	 
      	 
      	 
      	
                      SDU
      TRACT 181 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128560

                    	 
      	 
      	 
      	
                      SDU
      TRACT 186 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054185

                    	 
      	 
      	 
      	
                      SDU
      TRACT 197 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054190

                    	 
      	 
      	 
      	
                      SDU
      TRACT 198 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054177

                    	 
      	 
      	 
      	
                      SDU
      TRACT 19 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128567

                    	 
      	 
      	 
      	
                      SDU
      TRACT 212 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128569

                    	 
      	 
      	 
      	
                      SDU
      TRACT 213 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      052718

                    	 
      	 
      	 
      	
                      SDU
      TRACT 23 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128907

                    	 
      	 
      	 
      	
                      SDU
      TRACT 38 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128548

                    	 
      	 
      	 
      	
                      SDU
      TRACT 39 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128908

                    	 
      	 
      	 
      	
                      SDU
      TRACT 39 B

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054176

                    	 
      	 
      	 
      	
                      SDU
      TRACT 44 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054180

                    	 
      	 
      	 
      	
                      SDU
      TRACT 45 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128573

                    	 
      	 
      	 
      	
                      SDU
      TRACT 56 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128909

                    	 
      	 
      	 
      	
                      SDU
      TRACT 58

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128570

                    	 
      	 
      	 
      	
                      SDU
      TRACT 58 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128549

                    	 
      	 
      	 
      	
                      SDU
      TRACT 59 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128544

                    	 
      	 
      	 
      	
                      SDU
      TRACT 61 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128565

                    	 
      	 
      	 
      	
                      SDU
      TRACT 73 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128564

                    	 
      	 
      	 
      	
                      SDU
      TRACT 74 B

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128572

                    	 
      	 
      	 
      	
                      SDU
      TRACT 75 A

                    	 	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    


            


            
              
                 


              

              
                 


                
                  

                

              

              
                 


              

            

            
               

              Exhibit
"A"

              


              Sep 04,
2009

              Page 3
of 13

              


              
                	
                        Plains
      Contract:

                      	 	
                        2582-1013

                      	 	
                        Effective:
      09-01-2009

                      	 	
                        Plains
      Marketing L.P.

                      	 
      


              

               

            

            
              	
                      PM

                      Lease

                      ‡=inact

                    	 	 	 	
                      Lease

                    	 	
                      Operator

                    	 	
                      County/Parrish

                    	 	 	 	
                      Price

                    	 	
                      Price

                      Method

                    	 	Applicable
      

                      Premium

                      Or

                      (Deduct)

                    	 	 
      

                      Fuel

                      Adjustment

                    	 	
                      Percent

                    	 	
                      Gravity

                    	 	 
      

                      State

                      Lease

                    
	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	
                      128571

                    	 
      	 
      	 
      	
                      SDU
      TRACT 76 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059554

                    	 
      	 
      	 
      	
                      SDU
      TRACT 77 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054184

                    	 
      	 
      	 
      	
                      SDU
      TRACT 78 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      059555

                    	 
      	 
      	 
      	
                      SDU
      TRACT 80 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128546

                    	 
      	 
      	 
      	
                      SDU
      TRACT 81 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128550

                    	 
      	 
      	 
      	
                      SDU
      TRACT 82 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054181

                    	 
      	 
      	 
      	
                      SDU
      TRACT 85-A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054284

                    	 
      	 
      	 
      	
                      SDU
      TRACT 86 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      054182

                    	 
      	 
      	 
      	
                      SDU
      TRACT 88 A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.9000)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128563

                    	 
      	 
      	 
      	
                      SDU
      TRACT 894

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128748

                    	 
      	 
      	 
      	
                      SPRABERRY
      DRIVER UNIT

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      015400

                    
	
                      128752

                    	 
      	 
      	 
      	
                      WILLIAMS,
      E.P. A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      GLASSCOCK

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      014097

                    
	
                      094152

                    	 
      	
                      (19)

                    	 
      	
                      ASHLEY

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5852

                    
	
                      094153
      ‡

                    	 
      	 
      	 
      	
                      CALLAWAY

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      021950

                    
	
                      076720

                    	 
      	 
      	 
      	
                      CASTLE
      1 X

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      027052

                    
	
                      084944

                    	 
      	
                      (13)

                    	 
      	
                      CLARENCE
      #1

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      549401

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      004171

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      "B"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      004247

                    	 
      	 
      	 
      	
                      CURTIS
      "C"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5287

                    
	
                      004172

                    	 
      	 
      	 
      	
                      CURTIS
      "D"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      032934

                    
	
                      004525

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      "E"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      004283

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      "H"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      004392

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      "K"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      074968

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      "P"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      076978

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      "R"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      078429

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      "U"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      078400

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      "W"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      004088

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      "A"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      135131

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      F #2

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      004282

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      G

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    


            


            
              
                 


              

              
                 


                
                  

                

              

              
                 


              

            

            
               

              Exhibit
"A"

              


              Sep 04,
2009

              Page 4
of 13

              


              
                	
                        Plains
      Contract:

                      	 	
                        2582-1013

                      	 	
                        Effective:
      09-01-2009

                      	 	
                        Plains
      Marketing L.P.

                      	 
      


              

               

            

            
              	 
      

                      PM

                      Lease

                      ‡=inact

                    	 	 	 	
                      Lease

                    	 	
                      Operator

                    	 	
                      County/Parrish

                    	 	 	 	
                      Price

                    	 	 
      

                      Price

                      Method

                    	 	Applicable 

                      Premium

                      Or

                      (Deduct)

                    	 	
                      Fuel

                      Adjustment

                    	 	
                      Percent

                    	 	
                      Gravity

                    	 	
                      State

                      Lease

                    
	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	
                      004528

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      I

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      112604

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      J

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      549980

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      L

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      550021

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      M

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      112608

                    	 
      	
                      (12)

                    	 
      	
                      CURTIS
      N

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      114710

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      O

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      012906

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      Q

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      077408

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      S

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      550513

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      T

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      550548

                    	 
      	
                      (9)

                    	 
      	
                      CURTIS
      V

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      059998

                    	 
      	
                      (13)

                    	 
      	
                      CURTIS
      X

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5602

                    
	
                      096203

                    	 
      	
                      (15)

                    	 
      	
                      DICKENSON-C-#13
      & 14

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      021525

                    
	
                      123002

                    	 
      	
                      (15)

                    	 
      	
                      DICKENSON-C-#15

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      021525

                    
	
                      003363

                    	 
      	
                      (11)

                    	 
      	
                      DOVE

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5604

                    
	
                      004522

                    	 
      	
                      (12)

                    	 
      	
                      DOVE
      "Z"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      7198

                    
	
                      095854

                    	 
      	
                      (11)

                    	 
      	
                      DOVE
      "B"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5604

                    
	
                      095855

                    	 
      	
                      (11)

                    	 
      	
                      DOVE
      "C"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5604

                    
	
                      095856

                    	 
      	 
      	 
      	
                      DOVE
      "G"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      032497

                    
	
                      093966

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      "U"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      004158

                    	 
      	
                      (11)

                    	 
      	
                      DOVE
      "W"

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5604

                    
	
                      095950

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      A

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      095935

                    	 
      	
                      (10)

                    	 
      	
                      DOVE
      D

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5929

                    
	
                      095936

                    	 
      	 
      	 
      	
                      DOVE
      E #1 & #2

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      032462

                    
	
                      096076

                    	 
      	 
      	 
      	
                      DOVE
      H

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      032528

                    
	
                      096077

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      I

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      096078

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      J

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      059620

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      J #2

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      003160

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      K

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      549338

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      L

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    
	
                      096079

                    	 
      	
                      (9)

                    	 
      	
                      DOVE
      M

                    	 
      	
                      PIONEER
      NATURAL RES

                    	 
      	
                      IN
      MARTIN

                    	 
      	
                      TX

                    	 
      	
                      X1585

                    	 
      	
                      EDQ

                    	 
      	
                      ($0.5500)

                    	 
      	
                      $0.0000

                    	 
      	
                      100.00000%

                    	 
      	
                      Flat

                    	 
      	
                      5605

                    


            

             

            
              
                
                

              

              
                
                

                
                  

                

              

              
                
                

              

            

              


            
              
                Exhibit
"A"

                


                Sep 04,
2009

                Page 5
of 13

                


                
                  	
                          Plains
      Contract:

                        	 	
                          2582-1013

                        	 	
                          Effective:
      09-01-2009

                        	 	
                          Plains
      Marketing L.P.

                        	 
      


                

                 

              

              
                	
                        
                          PM

                          Lease

                          ‡=inact

                        

                      	 
      	 
      	 
      	
                        Lease

                      	 
      	
                        Operator

                      	 
      	
                        County/Parish

                      	 
      	 
      	 
      	
                        Price

                      	 
      	
                        Price
      Method

                      	 
      	
                        Applicable

                        Premium

                        Or

                        (Deduct)

                      	 
      	
                        Fuel

                        Adjust

                      	 
      	
                        Percent

                      	 
      	
                        Gravity

                      	 
      	
                        State

                        Lease

                      
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                        142124

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      M #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        549680

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      N

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        004523

                      	 
      	
                        (12)

                      	 
      	
                        DOVE
      -O-

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        7198

                      
	
                        096080

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      P

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        096378

                      	 
      	
                        (11)

                      	 
      	
                        DOVE
      Q

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5604

                      
	
                        003568

                      	 
      	
                        (11)

                      	 
      	
                        DOVE
      R

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5604

                      
	
                        003698

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      S

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        60.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        003699

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      T

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        40.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        112907

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      V #1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        139945

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      V #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        032922

                      
	
                        549717

                      	 
      	
                        (9)

                      	 
      	
                        DOVE
      Y

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5605

                      
	
                        055503

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020227

                      
	
                        055504

                      	 
      	
                        (18)

                      	 
      	
                        ELMA
      L SLAUGHTER B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        49.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020227

                      
	
                        130254

                      	 
      	
                        (18)

                      	 
      	
                        ELMA
      L SLAUGHTER B#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        51.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020277

                      
	
                        055506

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER C

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020332

                      
	
                        055508

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER E

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020464

                      
	
                        055511

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER H

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020919

                      
	
                        055513

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER J

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020955

                      
	
                        055510

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER G #1-3

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020911

                      
	
                        071171

                      	 
      	 
      	 
      	
                        ELMA
      L SLAUGHTER G#2-4

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        020911

                      
	
                        094154‡

                      	 
      	 
      	 
      	
                        FOREMAN

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021725

                      
	
                        094156

                      	 
      	 
      	 
      	
                        FRAZIER

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        022003

                      
	
                        548277

                      	 
      	
                        (17)

                      	 
      	
                        GLASS

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        094157

                      	 
      	 
      	 
      	
                        GLASS
      7

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        022448

                      
	
                        548278

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      A

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548279

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        552194

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      �B� #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548287

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      C #1 & #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130123

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      D #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548299

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      D#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      


              

               

              
                
                   


                

                
                   


                  
                    

                  

                

                
                   


                

              

              


              
                Exhibit
"A"

                


                Sep 04,
2009

                Page 6
of 13

                


                
                  	
                          Plains
      Contract:

                        	 	
                          2582-1013

                        	 	
                          Effective:
      09-01-2009

                        	 	
                          Plains
      Marketing L.P.

                        	 
      


                

                 

              

              
                	
                        
                          PM

                          Lease

                          ‡=inact

                        

                      	 
      	 
      	 
      	
                        Lease

                      	 
      	
                        Operator

                      	 
      	
                        County/Parish

                      	 
      	 
      	 
      	
                        Price

                      	 
      	
                        Price
      Method

                      	 
      	
                        Applicable

                        Premium

                        Or

                        (Deduct)

                      	 
      	
                        Fuel

                        Adjust

                      	 
      	
                        Percent

                      	 
      	
                        Gravity

                      	 
      	
                        State

                        Lease

                      
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                        120706

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      DD

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        037854

                      
	
                        548334

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      E

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        120708

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      FF

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548469

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      H

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        120710

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      HH

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548470

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      I

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        120711

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      II

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130288

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      J

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130291

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      K

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130293

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      L

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130292

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      M

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130290

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      N

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130294

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      O

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130295

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      T

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        548719

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      Y

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        130289

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      V

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        114777

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      W

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        154028

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      W#3

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        148754

                      	 
      	
                        (17)

                      	 
      	
                        GLASS
      Y

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        096221

                      	 
      	 
      	 
      	
                        GLEN
      COX

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021702

                      
	
                        549337

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      B#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        114774

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      C#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549384

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      D#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        114770

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      D#2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549466

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      E#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        114771

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      E#2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549395

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      F

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        032868

                      
	
                        549396

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      G

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549397

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      H

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        130014

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      H#2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        032857

                      


              

               

              
                
                   


                

                
                   


                  
                    

                  

                

                
                   


                

              

               

              
                
                  Exhibit
"A"

                  


                  Sep 04,
2009

                  Page 7
of 13

                  


                  
                    	
                            Plains
      Contract:

                          	 	
                            2582-1013

                          	 	
                            Effective:
      09-01-2009

                          	 	
                            Plains
      Marketing L.P.

                          	 
      


                  

                   

                

              

              
                	
                        
                          PM

                          Lease

                          ‡=inact

                        

                      	 
      	 
      	 
      	
                        Lease

                      	 
      	
                        Operator

                      	 
      	
                        County/Parish

                      	 
      	 
      	 
      	
                        Price

                      	 
      	
                        Price
      Method

                      	 
      	
                        Applicable

                        Premium

                        Or

                        (Deduct)

                      	 
      	
                        Fuel

                        Adjust

                      	 
      	
                        Percent

                      	 
      	
                        Gravity

                      	 
      	
                        State

                        Lease

                      
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                        549398

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      I

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549399

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      J

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549831

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      K#1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549681

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      L

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549706

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      M

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549933

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      O

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549714

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      P

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549911

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      Q

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549801

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      R

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549836

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      S

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        548950

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      V

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549700

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      W

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549934

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      X

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549978

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      Y

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549983

                      	 
      	
                        (14)

                      	 
      	
                        GUY
      Z

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        070367‡

                      	 
      	 
      	 
      	
                        HALE
      -B-

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021130

                      
	
                        094158

                      	 
      	 
      	 
      	
                        HAMM

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021764

                      
	
                        094160

                      	 
      	 
      	 
      	
                        HOWELL

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021911

                      
	
                        166076

                      	 
      	 
      	 
      	
                        INEZ
      WOODY 2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021682

                      
	
                        142021

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY B#2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        154060

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY B#3

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        139875

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY C#3

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        142023

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY C#4

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        142401

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY C#6

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        154024

                      	 
      	
                        (16)

                      	 
      	
                        INEZ
      WOODY C#6

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5858

                      
	
                        000110

                      	 
      	 
      	 
      	
                        JC
      SALE

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021322

                      
	
                        001312

                      	 
      	 
      	 
      	
                        JN
      WOODY JR

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021761

                      
	
                        097340‡

                      	 
      	 
      	 
      	
                        KEATON
      B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        217765

                      
	
                        094161

                      	 
      	 
      	 
      	
                        KELLY
      A

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021685

                      
	
                        001142‡

                      	 
      	 
      	 
      	
                        KEWANEE

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021797

                      


              

               

              
                
                   


                

                
                   


                  
                    

                  

                

                
                   


                

              

               

              
                
                  Exhibit
"A"

                  


                  Sep 04,
2009

                  Page 8
of 13

                  


                  
                    	
                            Plains
      Contract:

                          	 	
                            2582-1013

                          	 	
                            Effective:
      09-01-2009

                          	 	
                            Plains
      Marketing L.P.

                          	 
      


                  

                   

                

              

              
                	
                        
                          PM

                          Lease

                          ‡=inact

                        

                      	 
      	 
      	 
      	
                        Lease

                      	 
      	
                        Operator

                      	 
      	
                        County/Parish

                      	 
      	 
      	 
      	
                        Price

                      	 
      	
                        Price
      Method

                      	 
      	
                        Applicable

                        Premium

                        Or

                        (Deduct)

                      	 
      	
                        Fuel

                        Adjust

                      	 
      	
                        Percent

                      	 
      	
                        Gravity

                      	 
      	
                        State

                        Lease

                      
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                        094162�

                      	 
      	 
      	 
      	
                        KNOX

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021759

                      
	
                        093699

                      	 
      	
                        (19)

                      	 
      	
                        LEONARD
      A

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6852

                      
	
                        049490

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      �A�

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        135342

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      "A" #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        004503

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      "G"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549995

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549951

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      C

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        550028

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      D

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        549976

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      E

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        550303

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      H #1

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        114773

                      	 
      	
                        (14)

                      	 
      	
                        LOTTIE
      H #2

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        094573

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      "P"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        096831

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      J#13

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        096907‡

                      	 
      	
                        (1)

                      	 
      	
                        MABEE
      K

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        74.60938%

                      	 
      	
                        Flat

                      	 
      	
                        7567

                      
	
                        548721

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      O

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        548724

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      Q

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        547923

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      V

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        547914

                      	 
      	
                        (14)

                      	 
      	
                        MABEE
      W

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        6857

                      
	
                        094136‡

                      	 
      	 
      	 
      	
                        MADISON
      B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021510

                      
	
                        094155

                      	 
      	 
      	 
      	
                        MAYME
      FOREMAN

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021685

                      
	
                        000029‡

                      	 
      	 
      	 
      	
                        MCREYNOLDS
      "B"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        022741

                      
	
                        094164

                      	 
      	 
      	 
      	
                        MEEK

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        021979

                      
	
                        073269‡

                      	 
      	 
      	 
      	
                        MORRISON
      "A"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        026023

                      
	
                        549431

                      	 
      	
                        (17)

                      	 
      	
                        QUAIL
      A

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        549410

                      	 
      	
                        (17)

                      	 
      	
                        QUAIL
      B

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5826

                      
	
                        073902

                      	 
      	 
      	 
      	
                        QUATTLEBAUM

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        026427

                      
	
                        094273

                      	 
      	
                        (11)

                      	 
      	
                        SCHARBAUER
      "F"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5604

                      
	
                        094456

                      	 
      	
                        (10)

                      	 
      	
                        SCHARBAUER
      "N"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5829

                      
	
                        002933

                      	 
      	
                        (10)

                      	 
      	
                        SCHARBAUER
      "O"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        5829

                      
	
                        094508

                      	 
      	 
      	 
      	
                        SCHARBAUER
      "P"

                      	 
      	
                        PIONEER
      NATURAL RES USA IN

                      	 
      	
                        MARTIN

                      	 
      	
                        TX

                      	 
      	
                        X1585

                      	 
      	
                        EDQ

                      	 
      	
                        ($0.5500)

                      	 
      	
                        $0.0000

                      	 
      	
                        100.00000%

                      	 
      	
                        Flat

                      	 
      	
                        032086

                      


              

            

          

        

      

       

      
        
           


        

        
           


          
            

          

        

        
           


        

      

      
Exhibit
"A"

      


      Sep 04,
2009

      Page 9 of
13

      


      
        	
                Plains
      contract:

              	 
      	
                2582-1013

              	 
      	
                Effective:
      09-01-2009

              	 
      	
                Plains
      Marketing L.P.

              


      

      


      


      
        	
                
                  
                    PM

                    Lease

                    ‡=inact

                  

                

              	 
      	 
      	 
      	
                Lease

              	 
      	
                Operator

              	 
      	
                County/Parish

              	 
      	 
      	 
      	
                Price

              	 
      	
                Price

                Method

              	 
      	
                Applicable

                Premium

                or

                (Deduct)

              	 
      	
                Fuel

                Adjust

              	 
      	
                Percent

              	 
      	
                Gravity

              	 
      	
                State

                Lease

              
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                094822

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      "U"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                094823

              	 
      	
                (11)

              	 
      	
                SCHARBAUER
      "V"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5604

              
	
                098890‡

              	 
      	 
      	 
      	
                SCHARBAUER
      -C-

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                022641

              
	
                112602

              	 
      	
                (10)

              	 
      	
                SCHARBAUER
      C #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5929

              
	
                112805

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      E

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                094305

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      G

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                092906

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      K

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                094501

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      L

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                010570

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      L #2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                059618

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      P #3

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                094836

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      R #1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                167897

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH #33

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                167712

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH #73

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                037534

              
	
                130034

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      RANCH 31

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                135042

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      RANCH 32

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                135043

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 34

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                142067

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 36

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                126768

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 42

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                114265

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 44

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                130455

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 45

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                156283

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 47

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                135397

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 53

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                142172

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 55

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                130251

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 60

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                142463

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 64

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                135138

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 68

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                154059

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 74

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                135087

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH 75

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                142173

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH A #1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5602

              
	
                167639

              	 
      	
                (13)

              	 
      	
                SCHARBAUER
      RANCH A #2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                038227

              


      


      
        
           


        

        
           


          
            

          

        

        
           


        

      


      Exhibit
"A"

      


      Sep 04,
2009

      Page 10
of 13

      


      
        	
                Plains
      contract:

              	 
      	
                2582-1013

              	 
      	
                Effective:
      09-01-2009

              	 
      	
                Plains
      Marketing L.P.

              


      

      


      
        	
                
                  
                    PM

                    Lease

                    ‡=inact

                  

                

              	 
      	 
      	 
      	
                Lease

              	 
      	
                Operator

              	 
      	
                County/Parish

              	 
      	 
      	 
      	
                Price

              	 
      	
                Price

                Method

              	 
      	
                Applicable

                Premium

                or

                (Deduct)

              	 
      	
                Fuel

                Adjust

              	 
      	
                Percent

              	 
      	
                Gravity

              	 
      	
                State

                Lease

              
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                142318

              	 
      	
                (12)

              	 
      	
                SCHARBAUER
      RANCH A-4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                7198

              
	
                154262

              	 
      	
                (12)

              	 
      	
                SCHARBAUER
      RANCH A-6

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                7198

              
	
                142068

              	 
      	
                (12)

              	 
      	
                SCHARBAUER
      RANCH A-7

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                7198

              
	
                158284

              	 
      	
                (12)

              	 
      	
                SCHARBAUER
      RANCH A-8

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                7198

              
	
                154151

              	 
      	
                (12)

              	 
      	
                SCHARBAUER
      RANCH A-9

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                7198

              
	
                064324

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      T #1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                065255

              	 
      	
                (11)

              	 
      	
                SCHARBAUER
      X#1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5604

              
	
                064310

              	 
      	
                (11)

              	 
      	
                SCHARBAUER
      X#2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5604

              
	
                085912‡

              	 
      	 
      	 
      	
                SCHARBAUER
      -Y-

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                032475

              
	
                096081

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      Z #1 

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                059621

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      Z #3

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                064327

              	 
      	
                (9)

              	 
      	
                SCHARBAUER
      Z #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5605

              
	
                548534

              	 
      	
                (17)

              	 
      	
                SCHENECKER

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                6826

              
	
                548611

              	 
      	
                (17)

              	 
      	
                SCHENECKER
      A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5826

              
	
                093242

              	 
      	 
      	 
      	
                STEWART
      "A"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                030394

              
	
                001973

              	 
      	 
      	 
      	
                STEWART
      B

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                022026

              
	
                094165

              	 
      	 
      	 
      	
                WEBB

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021708

              
	
                097677

              	 
      	
                (3)

              	 
      	
                WELCH
      & WELCH

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021859

              
	
                007678

              	 
      	
                (3)

              	 
      	
                WELCH
      & WELCH #2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021859

              
	
                090009

              	 
      	
                (2)

              	 
      	
                WELCH
      G #3

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021567

              
	
                097672

              	 
      	
                (2)

              	 
      	
                WELCH
      G #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021667-

              
	
                094151

              	 
      	 
      	 
      	
                WILLIAMS
      "B"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021768

              
	
                094169

              	 
      	 
      	 
      	
                WILLIAMS
      "D"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                022049

              
	
                090010‡

              	 
      	 
      	 
      	
                WINCHESTER
      #1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021687

              
	
                001096

              	 
      	 
      	 
      	
                WOODY

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021688

              
	
                077196

              	 
      	
                (16)

              	 
      	
                WOODY
      J#1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5658

              
	
                128516

              	 
      	
                (16)

              	 
      	
                WOODY
      J#2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5856

              
	
                001873

              	 
      	 
      	 
      	
                WOODY-E-

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021970

              
	
                096250

              	 
      	 
      	 
      	
                WOOOY-H-

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                021889

              
	
                077210

              	 
      	
                (16)

              	 
      	
                WOODY
      -1-WELL #3

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5858

              


      


      
        
           


        

        
           


          
            

          

        

        
           


        

      


      Exhibit
"A"

      


      Sep 04,
2009

      Page 11
of 13

      


      
        	
                Plains
      contract:

              	 
      	
                2582-1013

              	 
      	
                Effective:
      09-01-2009

              	 
      	
                Plains
      Marketing L.P.

              


      

      


      
        	
                
                  
                    PM

                    Lease

                    ‡=inact

                  

                

              	 
      	 
      	 
      	
                Lease

              	 
      	
                Operator

              	 
      	
                County/Parish

              	 
      	 
      	 
      	
                Price

              	 
      	
                Price

                Method

              	 
      	
                Applicable

                Premium

                or

                (Deduct)

              	 
      	
                Fuel

                Adjust

              	 
      	
                Percent

              	 
      	
                Gravity

              	 
      	
                State

                Lease

              
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                077481

              	 
      	
                (16)

              	 
      	
                WOODY
      K#1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5858

              
	
                128517

              	 
      	
                (16)

              	 
      	
                WOODY
      K#2

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MARTIN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5858

              
	
                014148‡

              	 
      	 
      	 
      	
                FLOYD
      "A"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                006610

              
	
                106957

              	 
      	
                (8)

              	 
      	
                MCCLINTIC
      59-1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4479

              
	
                097583

              	 
      	
                (4)

              	 
      	
                MCCLINTIC
      D

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4419

              
	
                055935

              	 
      	
                (8)

              	 
      	
                MCCLINTIC
      E

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4479

              
	
                064598

              	 
      	
                (22)

              	 
      	
                MCCLINTIC
      E

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5030

              
	
                064600

              	 
      	
                (22)

              	 
      	
                MCCLINTIC
      E NCT #30 #53

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5030

              
	
                064599

              	 
      	
                (22)

              	 
      	
                MCCLINTIC
      F

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                5030

              
	
                064321

              	 
      	
                (8)

              	 
      	
                MCCLINTIC
      G

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4479

              
	
                064316

              	 
      	
                (4)

              	 
      	
                MCCLINTIC
      H

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4419

              
	
                064322

              	 
      	
                (8)

              	 
      	
                MCCLINTIC
      J

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                4479

              
	
                054116

              	 
      	 
      	 
      	
                MCCLINTIC
      L

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                034621

              
	
                054099

              	 
      	 
      	 
      	
                MCCLINTIC
      M #54

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                034738

              
	
                063255

              	 
      	 
      	 
      	
                MIDKIFF
      TRACT 6

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015254

              
	
                553435

              	 
      	 
      	 
      	
                S
      DRIVER U TR 51A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                554233

              	 
      	 
      	 
      	
                S
      DRIVER UT TR 52B

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                553232

              	 
      	 
      	 
      	
                S
      DRIVER UT TR 890

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                054491

              	 
      	 
      	 
      	
                SDU
      27A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.9000)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                554422

              	 
      	 
      	 
      	
                SDU
      48A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.9000)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                554430

              	 
      	 
      	 
      	
                SOU
      50A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.9000)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                554404

              	 
      	 
      	 
      	
                SDU
      53A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                554475

              	 
      	 
      	 
      	
                SDU
      55A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.9000)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                015400

              
	
                064317‡

              	 
      	 
      	 
      	
                TURNER
      J

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN MIDLAND

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                033428

              
	
                128754

              	 
      	 
      	 
      	
                ATKINSON
      B & WHITEHOUSE"

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                6441

              
	
                128753

              	 
      	 
      	 
      	
                ATKINSON,
      W.B. A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                014074

              
	
                128755

              	 
      	 
      	 
      	
                CAUBLE,
      E.G. K

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                014070

              
	
                128758

              	 
      	 
      	 
      	
                CAUBLE,
      E.G. L

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                014071

              
	
                059834

              	 
      	 
      	 
      	
                MERCHANT
      39-S

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                059660

              	 
      	 
      	 
      	
                MERCHANT
      46S

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              


      


      
        
           


        

        
           


          
            

          

        

        
           


        

      


      Exhibit
"A"

      


      Sep 04,
2009

      Page 12
of 13

      


      
        	
                Plains
      contract:

              	 
      	
                2582-1013

              	 
      	
                Effective:
      09-01-2009

              	 
      	
                Plains
      Marketing L.P.

              


      

      


      
        	
                
                  
                    PM

                    Lease

                    ‡=inact

                  

                

              	 
      	 
      	 
      	
                Lease

              	 
      	
                Operator

              	 
      	
                County/Parish

              	 
      	 
      	 
      	
                Price

              	 
      	
                Price

                Method

              	 
      	
                Applicable

                Premium

                or

                (Deduct)

              	 
      	
                Fuel

                Adjust

              	 
      	
                Percent

              	 
      	
                Gravity

              	 
      	
                State

                Lease

              
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
                059661

              	 
      	 
      	 
      	
                MERCHANT
      47S

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                055425

              	 
      	 
      	 
      	
                MERCHANT
      5502N

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                052821

              	 
      	 
      	 
      	
                MERCHANT
      TR 4404A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                054022

              	 
      	 
      	 
      	
                MERCHANT
      TR 53K

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                098176

              	 
      	 
      	 
      	
                MERCHANT
      UNIT

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                055467

              	 
      	 
      	 
      	
                MERCHANT
      UNIT TR 3702 N

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                059645

              	 
      	 
      	 
      	
                MERCHANT
      UT 40-S

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                052797

              	 
      	 
      	 
      	
                MERCHANT
      UT TR #3803A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                052796

              	 
      	 
      	 
      	
                MERCHANT
      UT TR #5104A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                052802

              	 
      	 
      	 
      	
                MERCHANT
      UT TR#5202A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                052803

              	 
      	 
      	 
      	
                MERCHANT
      UT TR #6207A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                059542

              	 
      	 
      	 
      	
                MERCHANTS
      63S

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                062771

              	 
      	 
      	 
      	
                MERCHANTS
      6403-A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN REAGAN

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004426

              
	
                092782‡

              	 
      	 
      	 
      	
                CONNELL
      #1 & #2

              	 
      	
                PIONEER
      NATURAL RESOURCE

              	 
      	
                UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                144253

              
	
                097748

              	 
      	 
      	 
      	
                CONNELL
      B #1, #3, #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004414

              
	
                097752

              	 
      	 
      	 
      	
                COWDEN
      B

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004382

              
	
                076667

              	 
      	
                (6)

              	 
      	
                HIRSCH
      E #1

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004223

              
	
                064315

              	 
      	
                (6)

              	 
      	
                HIRSCH
      E #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004223

              
	
                064323

              	 
      	
                (7)

              	 
      	
                HIRSCH
      F #2, 5 & 6

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004254

              
	
                076668

              	 
      	
                (7)

              	 
      	
                HIRSCH
      F #4

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004254

              
	
                119109

              	 
      	
                (7)

              	 
      	
                HIRSCH
      F 10

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004254

              
	
                119107

              	 
      	
                (7)

              	 
      	
                HIRSCH
      F 8

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004254

              
	
                119108

              	 
      	
                (7)

              	 
      	
                HIRSCH
      F 9

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004254

              
	
                064319

              	 
      	 
      	 
      	
                LINK
      #8

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                004039

              
	
                097630

              	 
      	 
      	 
      	
                N
      PEMBROOK SPRA UNIT #79

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              
	
                059800

              	 
      	 
      	 
      	
                NPSU
      TRACT 28 A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              
	
                059616

              	 
      	 
      	 
      	
                NPSU
      TRACT 54A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              
	
                059617

              	 
      	 
      	 
      	
                NPSU
      TRACT 55A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              
	
                059615

              	 
      	 
      	 
      	
                NPSU
      TRACT 57A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              
	
                059612

              	 
      	 
      	 
      	
                NPSU
      TRACT 74A

              	 
      	
                PIONEER
      NATURAL RES

              	 
      	
                USA
      IN UPTON

              	 
      	
                TX

              	 
      	
                X1585

              	 
      	
                EDQ

              	 
      	
                ($0.5500)

              	 
      	
                $0.0000

              	 
      	
                100.00000%

              	 
      	
                Flat

              	 
      	
                003913

              


      

       

    

    
      
         


      

      
         


        
          

        

      

      
         


      

    

    


    
      Exhibit
"A"

      


      Sep 04,
2009

      Page 13
of 13

      


      
        	
                Plains
      contract:

              	 
      	
                2582-1013

              	 
      	
                Effective:
      09-01-2009

              	 
      	
                Plains
      Marketing L.P.

              


      

       

    

    
      	
              
                
                  PM

                  Lease

                  ‡=inact

                

              

            	 
      	 
      	 
      	
              Lease

            	 
      	
              Operator

            	 
      	
              County/Parish

            	 
      	 
      	 
      	
              Price

            	 
      	
              Price
      Method

            	 
      	
              Applicable

              Premium

              Or

              (Deduct)

            	 
      	
              Fuel

              Adjust

            	 
      	
              Percent

            	 
      	
              Gravity

            	 
      	
              State

              Lease

            
	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	
              059613

            	 
      	 
      	 
      	
              NPSU
      TRACT 75A

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003913

            
	
              059614

            	 
      	 
      	 
      	
              MPSU
      TRACT 79A

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003913

            
	
              064447

            	 
      	 
      (21)	 
      	
              PEMBROOK
      UNIT TR 1

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              4.86624

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064449

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 11

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              9.73248

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064450

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 12

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              9.73248

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064448

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 2

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              9.73248

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064451

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 22

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              4.86624

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064452

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 28

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              4.86624

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064453

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 29

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              4.86624

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064454

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 30

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              7.29936

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064455

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 31

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              2.43312

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064456

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 33

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              2.43491

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064457

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 34

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              2.43312

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064458

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 36

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              .24027

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064459

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 59

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              9.73248

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064460

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 60

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              1.21656

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064461

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 63

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              3.64968

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064465

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 64

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              9.73248

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064462

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 72

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              4.86624

            	 
      	
              Flat

            	 
      	
              5497

            
	
              064463

            	 
      	(21)	 
      	
              PEMBROOK
      UNIT TR 77

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              7.29936%

            	 
      	
              Flat

            	 
      	
              5497

            
	
              007395

            	 
      	(5)	 
      	
              WINDHAM
      T #1 & 2

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003901

            
	
              064314

            	 
      	(5)	 
      	
              WINDHAM
      T #3

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003901

            
	
              119105

            	 
      	(5)	 
      	
              WINDHAM
      T 4

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003901

            
	
              119106

            	 
      	(5)	 
      	
              WINDHAM
      T 5

            	 
      	
              PIONEER
      NATURAL RES USA IN

            	 
      	
              UPTON

            	 
      	
              TX

            	 
      	
              X1585

            	 
      	
              EDQ

            	 
      	
              ($0.5500)

            	 
      	
              $0.0000

            	 
      	
              100.00000%

            	 
      	
              Flat

            	 
      	
              003901

            


    

     

    
      
         


      

      
         


        
          

        

      

      
         


      

    

    


    
      
        Exhibit
"A"

        


        Sep 04,
2009

        Page 1
of 1

        
          Plains
Marketing L.P.

        

        
          	
                  Plains
      contract:

                	 
      	
                  2582-1013

                	 
      	
                  Effective:
      09-01-2009

                	 
      	
                   

                


        

         

      

    

    
      
        	
                PM

                Lease

              	 
      	 
      	 
      	
                Lease

              	 
      	
                Operator

              	 
      	
                County/Parish

              	 
      	
                State

              	 
      	
                Price
      Code*

              	 
      	
                Price
      Method**

              	 
      	
                Applicable

                Deduct/

                Premium

              	 
      	
                 

              	 
      	
                Percent

              	 
      	
                Gravity

              	 
      	
                State

                Lease

              
	 	 	 	 	 	 	 
	 
      	 
      	
                (1)

              	 
      	
                Allocated
      under 088859 MABEE K

              	 
      	
                (*)   
      X1585
      SPECIAL POSTING-CNXSSH+RLL+PMID-NETPWTS/MID/14

              
	 
      	 
      	
                (2)

              	 
      	
                Allocated
      under 089029 WELCH G

              	 
      	
                (**) 
      EQUAL
      DAILY QUANTITIES

              
	 
      	 
      	
                (3)

              	 
      	
                Allocated
      under 089054 WELCH & WELCH

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (4)

              	 
      	
                Allocated
      under 890186 MCCLINTIC D & H STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (5)

              	 
      	
                Allocated
      under 890195 WINDHAM T #1 & #2

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (6)

              	 
      	
                Allocated
      under 890196 HIRSCH E STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (7)

              	 
      	
                Allocated
      under 890199 HIRSCH F STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (8)

              	 
      	
                Allocated
      under 994628 MCCLINTIC E, G & J STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (9)

              	 
      	
                Allocated
      under 994947 PIONEER CENTRAL LACT

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (10)

              	 
      	
                Allocated
      under 994948 SCHARBAUER C BRY STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (11)

              	 
      	
                Allocated
      under 994949 NORTH CURTIS BTY STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (12)

              	 
      	
                Allocated
      under 994950 DOVE Z BTY STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (13)

              	 
      	
                Allocated
      under 994951 CURTIS RSW BTY STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (14)

              	 
      	
                Allocated
      under 994997 MABEE BATTERY STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (15)

              	 
      	
                Allocated
      under 995418 DICKENSON STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (16)

              	 
      	
                Allocated
      under 995657 WOODY J#1 & #2

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (17)

              	 
      	
                Allocated
      under 995846 GLASS RANCE CONSOLIDATED BATT

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (18)

              	 
      	
                Allocated
      under 995864 ELMA L SLAUGHTER B STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (19)

              	 
      	
                Allocated
      under 995991 ASHLEY/LEONARD A STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (20)

              	 
      	
                Allocated
      under 995995 DAVENPORT RS A/A/B STORAGE

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (21)

              	 
      	
                Allocated
      under 999514 PEMBROOK UNIT

              	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      	 
      
	 
      	 
      	
                (22)

              	 
      	
                Allocated
      under 999595 MCCLINTIC E & F STORAGE