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 Appendix to Part 146--Guidelines for Determining Producibility and 
                 Relative Values for Oil Refinery Zones

    Where an example is set out in this appendix, the example is for 
purposes of illustrating the application of a provision, and where there 
is any inconsistency between the example and the provision, the 
provision prevails to the extent of the inconsistency. Alternative 
formats are also acceptable so long as they are consistent with the 
provisions of this part.

 I. Attribution Using Producibility Showing Manufacturing Periods From 
              Admission to Removal Within a Calender Month.

    Volume losses and gains accounted for by weight.

                                  Day 1

    Receipt into the refinery subzone during a 30-day month:

50,000 pounds privileged foreign (PF) class II crude oil.
50,000 pounds PF class III crude oil.
50,000 pounds domestic status class III crude oil.

                                 Day 10

    Removal from the refinery subzone for exportation of 50,000 pounds 
of aviation gasoline.
    The period of manufacture for the aviation gasoline is Day 1 to Day 
10. The refiner must first attribute the designated source of the 
aviation gasoline.
    In order to maximize the duty benefit conferred by the zone 
operation, the refiner chooses to attribute the exported aviation 
gasoline to the privileged foreign status crude oil. Under the tables 
for potential production (T.V. 66-16), class II crude has a 30% 
potential, and class III has a 40% potential. The maximum aviation 
gasoline producible from the class II crude oil is 15,000 pounds (50,000 
 x  .30). The maximum aviation gasoline producible from the privileged 
foreign status class III crude oil is 20,000 pounds (50,000  x  .40). 
The domestic class III crude would also make 20,000 pounds of aviation 
gasoline.
    The refiner could attribute 15,000 pounds of the privileged foreign 
class II crude oil, 20,000 pounds of the privileged foreign class III 
crude oil, and 15,000 pounds of the domestic class III crude oil as the 
source of the 50,000 pounds of the aviation gasoline that was exported; 
35,000 pounds of class II crude oil would be available for further 
production for other than aviation gasoline, 30,000 pounds of privileged 
foreign class III crude oil would be available for further production 
for other than aviation gasoline, and 35,000 pounds of domestic status 
class III crude oil would be available for further production, of which 
up to 5,000 pounds could be attributed to aviation gasoline.

                                 Day 21

    Receipt in the refinery subzone:

50,000 pounds PF status class I crude oil.
50,000 pounds PF status class IV crude oil.

                                 Day 30

    Removal from the refinery subzone:
30,000 pounds of motor gasoline for consumption.
10,000 pounds of jet fuel sold to the US Air Force for use in military 
aircraft.
10,000 pounds of aviation gasoline sold to a U.S. commuter airline for 
domestic flights.
10,000 pounds of kerosene for exportation.

    To the extent that the crude oils that entered production on Day 1 
are attributed as the designated sources for the products removed on Day 
30, the period of manufacture is Day 1 to Day 30. If the refiner chooses 
to attribute the crude oils that were admitted on Day 21 as the 
designated sources of the products removed on Day 30 using the 
production standards published in T.D. 66-16, the manufacturing period 
is Day 21 to Day 30. This choice will be important if a relative value 
calculation on the privileged foreign status crude oil is required, 
because the law requires the value used for computing the relative value 
to be the average per unit value of each product for the manufacturing 
period. Relative value must be calculated if a source feedstock is 
separated into two or more products that are removed from the subzone 
refinery. If the average per unit value for each product differs between 
the manufacturing period from Day 1 to Day 30 and the manufacturing 
period from Day 21 to Day 30, the correct period must be used in the 
calculation.
    In order to minimize duty liability, the refiner would try to 
attribute the production of the exported kerosene and the sale of the 
jet fuel to the US Air Force to the privileged foreign crude oils. For 
the same reason, the refiner would try to attribute the removed motor 
gasoline and the aviation gasoline for

[[Page 117]]

the commuter airline to the domestic crude oil.
    Accordingly, the refiner chooses to attribute up to 5,000 pounds of 
the domestic status class III crude as the source of the 10,000 pounds 
of aviation gasoline removed from the subzone refinery for the commuter 
airline. Since no other aviation gasoline could have been produced from 
the crude oils that were admitted into the refinery subzone Day 1, the 
refiner must attribute the remainder to the crude oils that entered 
production on Day 21. Again, using the production standards from T.D. 
66-16, the class I crude could produce aviation gasoline in an amount up 
to 10,000 pounds (50,000  x  .20). Likewise, the class IV crude oil 
could produce aviation gasoline in an amount up to 8,500 pounds (50,000 
x  .17).
    The refiner selects use of the class I crude as the source of the 
aviation gasoline. The refiner could attribute up to 27,300 pounds 
(35,000-5,000  x  .91) of the domestic class III crude oil as the source 
of the motor gasoline. This would leave 2,700 pounds of domestic class 
III crude available for further production for other than aviation 
gasoline or motor gasoline. The remaining motor gasoline removed (also 
2,700 pounds) must be attributed to a privileged foreign crude oil. The 
refiner selects the privileged foreign class II crude oil that entered 
production on Day 1 as the source for the remaining 2,700 pounds of 
motor gasoline.
    This would leave 32,300 pounds of privileged foreign class II crude 
oil available for further production, of which no more than 27,400 
pounds could be designated as the source of motor gasoline. The refiner 
attributes the jet fuel that is removed from the refinery subzone for 
the US Air Force for use in military aircraft to the privileged foreign 
class II crude oil. The refiner could attribute up to 20,995 pounds of 
jet fuel from that class II crude oil (32,300  x  .65). Designating that 
class II crude oil as the source of the 10,000 pounds of jet fuel leaves 
22,300 pounds of privileged foreign class II crude oil available for 
further production, of which up to 10,995 pounds could be attributed as 
the source of the jet fuel. Because the motor gasoline and the jet fuel, 
under the foregoing attribution, would be considered to have been 
separated from the privileged foreign class II crude oil, a relative 
value calculation would be required.
    The jet fuel is eligible for removal from the subzone free of duty 
by virtue of 19 U.S.C. 1309(a)(1)(A). The refiner could attribute the 
privileged foreign class II crude oil as being the source of the 10,000 
pounds of jet fuel (22,300  x  .65). The refiner chooses to attribute 
the privileged foreign class III crude oil as the source of the jet 
fuel. The refiner could attribute to that class III crude oil up to 
15,000 pounds of kerosene (30,000  x  .50).

                     II. Attribution on a FIFO Basis

(Accounting for volume losses or gains by the weight method)

                                 Day 1-5

    Transfer, into the Refinery Subzone, from one or more storage tanks 
into process 150 barrels of Privileged Foreign (PF) Class II crude oil, 
equivalent to 50,000 pounds.

                                  Day 6

    Removal from the refinery subzone 119 barrels of residual oils to 
customs territory, equivalent to 40,000 pounds.
    Since the operator uses the FIFO method of attribution, as the 
product is removed from the subzone, or consumed or lost within the 
subzone, attribution must be to the oldest feedstock available for 
attribution. Accordingly, the 40,000 pounds of residual oils will be 
attributed to 40,000 pounds of the PF Class II crude oil from Day 1-5.

                                 Day 10

    Transfer, into the refinery subzone, from one or more storage tanks 
4 barrels of domestic motor gasoline blend stock, equivalent to 1,000 
pounds to motor gasoline blending tank.

                                Day 6-15

    Transfer, into the refinery subzone, from one or more storage tanks 
into process 320 barrels of Domestic Class III crude oil, equivalent to 
100,000 pounds.

                                 Day 16

    Removal from the refinery subzone 14 barrels of asphalt to customs 
territory, equivalent to 5,000 pounds.
    The 5,000 pounds of asphalt will be attributed to 5,000 pounds of PF 
Class II crude oil from Day 1-5.

                                 Day 17

    Removal from the refinery subzone, 324 barrels of motor gasoline to 
customs territory, equivalent to 81,000 pounds.
    The 81,000 pounds of motor gasoline will be attributed to 1,000 
pounds of domestic motor gasoline blend stock from Day 10, to the 
remaining 5,000 pounds of PF Class II crude oil from Day 1-5 and 75,000 
pounds of domestic Class III crude oil from Day 6-15.

                                Day 16-20

    Transfer, into the refinery subzone, from one or more storage tanks 
into process 169 barrels of Privileged Foreign (PF) Class III crude oil, 
equivalent to 50,000 pounds.

[[Page 118]]

                                 Day 22

    Removal from the refinery subzone, 214 barrels of jet fuel for 
exportation, equivalent to 60,000 pounds.
    The 60,000 pounds of jet fuel will be attributed to the remaining 
25,000 pounds of domestic Class III crude oil from Day 6-15 and 35,000 
pounds of PF Class III crude oil from Day 16-20.

                                Day 21-25

    Transfer, into the refinery subzone from one or more storage tanks 
into process, 143 barrels of domestic Class I crude oil, equivalent to 
50,000 pounds.

                Day 30 (End of the Manufacturing Period)

    It is determined that during the manufacturing period just ended, 
that 34 barrels of fuel, equivalent to 10,000 pounds was consumed, and 5 
barrels of oil, equivalent to 1,500 pounds was lost in the refining 
production process within the refinery subzone.
    The 10,000 pounds of fuel consumed will be attributed 10,000 pounds 
of PF Class III crude oil from Day 16-20. The 1,500 pounds of oil lost 
in the refining production process will be attributed to 1,500 pounds of 
PF Class III crude oil from Day 16-20. The remaining 3,500 pounds of PF 
Class III crude oil from Day 16-20 will be the first to be attributed 
during the next manufacturing period.

                     III. Relative Value Calculation

    Because privileged foreign feedstocks transferred into process 
during Day 1-5 and Day 16-20 have two or more products attributed to 
them, each feedstock will require a relative value calculation.
    Relative value calculation for UIN Day 1-5, 50,000 pounds, 
equivalent to 150 barrels.

----------------------------------------------------------------------------
				      D Product  E R.V.          G Dutiable
		A Lbs  B BBLS  C $/BBL	value	Factor	F R.V.BBL   BBL    
----------------------------------------------------------------------------
Residual oil...40,000   119    15.00   1,785   .9047      108      108
Asphalt........ 5,000    14    13.00     182   .7840       11       11
Motor gasoline. 5,000    20    26.00     520   1.5682      31       31
		 -----------------------------------------------------------
      Totals...50,000   153   .......  2,487   .......    150      150 
----------------------------------------------------------------------------
A=Pounds Attributed.                                                                                                                                    
B=Equivalent Barrels.                                                                                                                                   
C=Price of Product.                                                                                                                                     
D=B x C.                                                                                                                                                
E=C/(Total of Column D/Attributed Crude BBLS).                                                                                                          
Residual Oil RV Factor=15.00/(2,487/150)=.9047.                                                                                                         
F=B x E.                                                                                                                                                
G=Dutiable Barrels.                                                                                                                                     

    Since all products attributed to the 50,000 pounds (150 BBLS) of PF 
Class II crude entered customs territory duty equals $7.88 
(150 x .0525).
    Feedstock factor calculation for UIN Day 16-20, 46,500 pounds 
equivalent to 157 barrels.

----------------------------------------------------------------------------
			    Product 	     Feedstock             Dutiable 
	     Lbs     BBLS    $/BBL   value    factor    R.V. BBL   BBL    
----------------------------------------------------------------------------
Jet Fuel.... 35,000   125   27.00    3,375    1.1030      138        0
Fuel........ 10,000    34   12.00      408    0.4902       17        0
Consumed 
Process Loss. 1,500     5   12.00       60    0.4902        2        0
  --------------------------------------------------------------------------
     Totals.  46,500  164   ......   3,843    ......      157        0
----------------------------------------------------------------------------

    Since jet fuel was exported, no duty is applicable. Fuel consumed 
for refinery process was consumed within the subzone premises and did 
not enter customs territory, thus no duty is applicable (assume refinery 
not barred by duty-free consumption restriction). Likewise, the process 
loss occurred entirely within the subzone. Therefore, no duty is 
applicable.

IV. Attribution to Privileged Foreign Feedstock; Relative Value; Monthly 
  Manufacturing Period, Weekly Entries, Attribution to a Prior Period; 
            Volume Loss or Gain Shown by Volume Differences.

    An operator who elects to attribute on a monthly basis files the 
following estimated removal of final products for the first week in 
September:

Jet Fuel (deemed exported on international flights)...........    20,000
Gasoline--Domestic Consumption................................    15,000
Duty-free certified as emergency war material.................    10,000
Petroleum coke exportations...................................    10,000
Distillate for consumption....................................     5,000
Petrochemicals exported.......................................    10,000
                                                                 --------
      Total removals..........................................    70,000
                                                                        


[[Page 119]]

    Because it does not elect to make attributions for feedstocks that 
were charged to operating units during the same week, the operator 
attributes the estimated removals to final products made during August 
from the following feedstocks:

Class II PF (privileged foreign) crude........................   20,000
Class III PF crude............................................   35,000
Class III D (domestic) crude..................................   20,000
Class III NPF (nonprivileged foreign crude....................   20,000
                                                               ---------
                                                                 95,000
                                                                        

    During August the operator produced from those feedstocks:

Jet..........................................................     35,000
Gasoline.....................................................     40,000
Petroleum Coke...............................................     10,000
Distillate...................................................      5,000
Petrochemicals...............................................     15,000
                                                               ----------
                                                                 105,000
                                                                        

There is a gain of 105,000-95,000=10,000................................

    Using the tables in T.D. 66-16, the following choices are available 
for attribution:

----------------------------------------------------------------------------
                                               Petrolum              Petro-  
                    Charged    Jet    Gasoline   coke   Distillate  chemical 
----------------------------------------------------------------------------
Class II PF Crude...20,000   13,000   17,200    4,400    17,200      5,000
Class III PF Crude..35,000   24,500   31,850   14,000    31,150     10,150
Class III D Crude...20,000   14,000   18,200    8,000    17,800      5,800
Class III NPF Crude.20,000   14,000   18,200    8,000    17,800      5,800
----------------------------------------------------------------------------

    Feedstock factors are calculated:

----------------------------------------------------------------------------
                                   Value                   Feedstock 
                        Barrels      barrels         Value       factors  
----------------------------------------------------------------------------
Gasoline.............   40,000          $25        $1,000,000        .9117
Jet Fuel.............   35,000           23           805,000        .8388
Distillate...........    5,000           20           100,000        .7294
Petroleum Coke.......   10,000           10           100,000        .3647
Petrochemicals.......   15,000           40           600,000       1.4587
                       -----------------------------------------------------
                       105,000       .......         2,605,000             
                       -----------------------------------------------------                        
Gain.................  -10,000                      $2,605,000  ........... 
                                                ----------------------------                        
      Total.......... \1\ 95,000                                       
(2)=$27.42 average value p/bbl                                                                                  
----------------------------------------------------------------------------

    Using the feedstock factor the refiner makes the following 
attributions:

                                                                        
                                                                        
                                                                        
Jet Fuel.........................       24,192  (20,291 feedstock       
                                                 attributed to Class III
                                                 PF Crude).             
                                        10,808  Class III NPF Crude     
                                                 (attribution of 9066   
                                                 solely for purpose of  
                                                 accounting for the     
                                                 amount of NPF used).   
                                  -------------                         
                                        35,000                          
  Gasoline.......................        5,000  (4,559 feedstock        
                                                 attributed to Class III
                                                 PF Crude).             
                                         5,000  Class III NPF Crude     
                                                 (attribution of 4599   
                                                 solely for purpose of  
                                                 accounting for the     
                                                 amount of NPF used).   
                                        15,000  (13,676 feedstock       
                                                 attributed to Class III
                                                 D Crude).              
                                  -------------                         
Petroleum Coke...................        8,418  (3,070 feedstock        
                                                 attributed to Class II 
                                                 PF Crude).             
                                         1,582  Class III NPF Crude     
                                                 (attribution of 577    
                                                 solely for purposes of 
                                                 accounting for the     
                                                 amount of NPF used).   
                                  -------------                         
                                        10,000                          
Distillate.......................        5,000  (3,647 feedstock        
                                                 attributed to Class III
                                                 Domestic).             
Petrochemicals...................        3,975  (5,800 feedstock        
                                                 attributed to Class III
                                                 NPF Crude).            
                                         6,025  (8,789 feedstock        
                                                 attributed to Class III
                                                 PF Crude).             
                                  -------------                         
                                        10,000                          
                                                                        


[[Page 120]]

   V. Weekly Entry, Weekly Manufacturing Period, and Relative Values 
Calculated on the Actual Weighted Average Values at the End of the Week.

    On the weekly estimated production CF 3461, the refiner is required 
to provide a pro forma invoice or schedule showing the number of units 
of each type of merchandise to be removed during the week and their zone 
and dutiable values. For example, on CF 3461 the refiner estimates the 
following shipments and relative values for the next week and files this 
on the preceding Friday.

----------------------------------------------------------------------------
                                             PF shipments      Value/barrel                 
Product week 1                 (MBBLS)        (platts)         Total value 
----------------------------------------------------------------------------
Motor Gasoline...............  20,000           $35              $700,000
Total Alkylate...............  25,000            35               875,000
Heavy Reformate..............  60,000            35             2,100,000
Reformer Feed................ 110,000            35             3,850,000
Raffinates................... 200,000            35             7,000,000
Jet Fuel..................... 200,000            35             7,000,000
                             --------------                   -------------
      Total.................. 615,000        .............     $21,525,000
---------------------------------------------------------------------------

    Attributed Feedstock--Class III Crude: 615,000@ $105=$64,575 
(estimated duties)
    During that week the refiner actually removes the following products 
and reports those on the CF 7501 filed within 10 business days after the 
CF 3461 is filed. Column 3 is the actual ``weighted average'' value for 
the manufacturing period, therefore, no reconciliation is necessary.

-----------------------------------------------------------------------------
                2  PF     3 Value/ 4 Total   5  Relative 6 Feedstock  7 Liq.               
1  Product      Shipments barrel    value   value factor distribu.   duties
                (mbbls)   wt.avg.) (2)x(3)   (3)/(8)     (5)x(2)   6)x(10)(9)
-----------------------------------------------------------------------------
Week 1:                                                                                                                                                 
  Motor Gasoline.19,977  $35.70    $713,179   1.104545   22,065      $2,317
  Total Alkylate.22,907   42.50     973,548   1.314935   30,121       3,163
  Heavy Reformate.58,164  31.42   1,827,513    .972123   56,542       5,937
  Reformer Feed.100,279   31.42   3,150,766    .972123   97,484      10,235
  Raffinates....170,293   29.55   5,032,158    .914266  155,693      16,348
  Jet Fuel......168,433   30.04   5,059,727    .929426  156,546      16,437
-----------------------------------------------------------------------------
      Total.....540,053 .......   16,756,891   .......  518,451      54,437
                                                         (9)          (10)
-----------------------------------------------------------------------------

Class III Crude Consumed 518,451 x $.105 = $54,437......................
Volumetric Gain 21,602..................................................
Avg. Value/Barrel Crude Consumed=$16,756,891518,451=$32.321 (8).
    This example shows volumetric gain of 21,602 mbbls. However, in that 
PF was requested, liquidated duties are only on actual feedstock (class 
III crude) used in the refining process. (518,451 @ $.105=$54,437).

  VI. Weekly Entry, Monthly Manufacturing Period, and Relative Values 
   Calculated on the Actual Weighted Average Values at the End of the 
                                 Month.

    For example, on the CF 3461 the refiner estimates the following 
shipments and relative values for the next week and files this on the 
preceding Friday.

-------------------------------------------------------------------------
                                              3 Value/                   
1 Product                 2 PF shipments      barrel       4 Total value
                                              (mbbls)          (platts)                   
-------------------------------------------------------------------------
Week 1:                                                                                                         
    Motor Gasoline......... 20,000              $35             $700,000
    Total Alkylate......... 25,000               35              875,000
    Heavy Reformate........ 60,000               35            2,100,000
    Reformer Feed......... 110,000               35            3,850,000
    Raffinates............ 200,000               35            7,000,000
    Jet Fuel.............. 200,000               35            7,000,000
                          ----------------                   ------------
      Total............... 615,000        ..............      21,525,000
-------------------------------------------------------------------------

Attributed Feedstock--Class III Crude: 615,000 @ $.105=$64,575 
(estimated duties)......................................................

    During the week the refiner actually removes the following products 
and reports those on the CF 7501 filed within 10 business days after the 
CF 3461 is filed. The reported relative values may be an estimate based 
on Platts, prior period actual prices, or the refiner's transfer prices. 
For this example, the estimates are based on the refiner's actual 
transfer prices. Listed below are the data to be shown on the weekly CF 
7501s with actual quantities shipped and estimated values for weeks 1-5.

[[Page 121]]



----------------------------------------------------------------------------
                2 PF    3 Value/ 4 Total  5 Relative   6 Feedstock  7 Liq              
 1 Product    shipments barrel    value   value factor  distrib.   duties (6)
               (mbbls)  (est.)   (2)x(3)    (3)/(8)      (5)x(2)   x(10)(9)
----------------------------------------------------------------------------
Week 1:                                                                                                                                                 
Motor Gasoline..19,977  $35.70   $713,179  1.104545     22,065       $2,317
Total Alkylate..22,907   42.50    973,548  1.314935     30,121        3,163
Heavy Reformate.58,164   31.42  1,827,513   .972123     56,542        5,937
Reformer Feed..100,279   31.42  3,150,766   .972123     97,484       10,235
Raffinates.....170,293   29.55  5,032,158   .914266    155,693       16,348
Jet Fuel.......168,433   30.04  5,059,727   .929426    156,546       16,437
----------------------------------------------------------------------------
      Total....540,053  ...... 16,756,891  ........    518,451      $54,437
                                                        (9)         (10)
----------------------------------------------------------------------------

Class III Crude Consumed 518,451 x $.105=$54,437........................
Volumetric Gain 21,602..................................................
Avg. Value/Barrel Crude Consumed=$16,756,891518,451=$32.321 (8).


----------------------------------------------------------------------------
                2  PF   3 Value/ 4 Total                           7 Liq                              
1 Product     shipments  barrel   value    5 Relative 6 Feedstock  duties
                (mbbls) (est.)                value     factor     distrib.                   
----------------------------------------------------------------------------
Week 2:                                                                                                                                                 
 Motor Gasoline..20,651  $36.90   $762,022   1.145429    23,654    $2,484
 Total Alkylate..23,435   44.25  1,036,999   1.373584    32,190     3,380
 Heavy Reformate.59,819   30.35  1,815,507    .942108    56,358     5,918
 Reformer Feed..101,167   30.10  3,045,127    .934347    94,526     9,925
 Raffinates.....172,317   29.30  5,048,888    .909514   156,726    16,456
 Jet fuel.......165,291   30.70  5,074,434    .952972   157,519    16,539
                ------------------------------------------------------------
   Total........542,680  ...... $16,782,977   ........  520,973   $54,702
----------------------------------------------------------------------------

Class III Crude Consumed 520,973 x $.105 = $54,702......................
Volumetric Gain 21,707..................................................
Avg. Value/Barrel Crude Consumed = $32.215..............................

---------------------------------------------------------------------------
                 2  PF    3 Value/  4 Total                         7 Liq.                                  
 1 Product     shipments   barrel    value  5 Relative 6 Feedstock  duties
                (mbbls)    (est.)              value     factor     distrib.                   
----------------------------------------------------------------------------
Week 3:                                                                                                                                                 
 Motor Gasoline..18,689   $34.90   $652,246   1.091819    20,405     $2,142
 Total Alkylate..21,511    40.25    865,818   1.259190    27,087      2,844
 Heavy Reformate.57,371    30.90   1,772,764   .966682    55,460      5,823
 Reformer Feed...99,707    30.90   3,080,946   .966682    96,386     10,121
 Raffinates.....168,112    29.65   4,984,521   .927577   155,938     16,374
 Jet Fuel.......172,092    29.85   5,136,946   .933834   160,707     16,874
----------------------------------------------------------------------------
  Total.........537,482  ....... $16,493,241 .........   515,983    $54,178
----------------------------------------------------------------------------

Class III Crude Consumed 515,983  x $.105 = $54,178.....................
Volumetric Gain 21,499..................................................
Avg. Value/Barrel Crude Consumed = $31.965..............................

---------------------------------------------------------------------------
                2  PF    3 Value/  4 Total                          7 Liq                                   
 1 Product     shipments barrel     value   5 Relative 6 Feedstock  duties
                 (mbbls)  (est.)              value      factor     distrib.                   
---------------------------------------------------------------------------
Week 4:                                                                                                                                                 
 Motor Gasoline..21,905  $32.85   $719,579   1.027237     22,502    $2,363
 Total Alkylate..22,552   38.75    873,890   1.211733     27,327     2,869
 Heavy Reformate.58,116   29.60  1,720,234   0.925607     53,791     5,648
 Reformer Feed..101,058   29.40  2,971,105   0.919353     92,908     9,755
 Raffinates.....169,823   30.15  5,120,163   0.942806    160,110    16,812
 Jet Fuel.......171,493   31.05  5,324,858   0.970949    166,511    17,484
---------------------------------------------------------------------------
   Total....... 544,947  ..... $16,729,829  ..........   523,149   $54,931
---------------------------------------------------------------------------

Class III Crude Consumed 523,149  x $.105 = $54,931.....................
Gain 21,798.............................................................
Avg. Value/Barrel Crude Consumed = $31.979

[[Page 122]]

........................................................................

---------------------------------------------------------------------------
                2  PF    3 Value/   4 Total                          7 Liq                                  
 1 Product     shipments  barrel      value  5 Relative  6 Feedstock duties
                (mbbls)   (est.)                value      factor    distrib
----------------------------------------------------------------------------
Week 5:                                                                                                                                                 
 Motor Gasoline.. 8,990   $37.25     $334,878   1.136260   10,215     $1,073
 Total Alkylate.. 9,984    45.10      450,278   1.375713   13,735      1,442
 Heavy Reformate.25,351    31.50      798,557   0.960864   24,360      2,558
 Reformer Feed...43,492    31.35    1,363,474   0.956288   41,592      4,367
 Raffinates......75,172    29.95    2,251,401   0.913583   68,677      7,211
 Jet fuel........75,795    30.56    2,316,295   0.932190   70,654      7,418
----------------------------------------------------------------------------
   Total.........238,784  ........ $7,514,883  .........  229,233    $24,069
----------------------------------------------------------------------------

Class III Crude Consumed 229,233  x $.105 = $24,069.....................
Gain 9,551..............................................................
Avg. Value/Barrel Crude Consumed = $32.783..............................
    As provided in the regulations, the refiner files an amended CF 7501 
for each week based on the refiner's actual weighted average values for 
the month, as shown below.

------------------------------------------------------------------------
                                                                Value/  
                          Product                               barrel  
                                                               (MBBLS)  
------------------------------------------------------------------------
Month End:                                                              
    Motor Gasoline.........................................       $35.27
    Total Alkylate.........................................        41.84
    Heavy Reformate........................................        30.66
    Reformer Feed..........................................        30.54
    Raffinates.............................................        29.69
    Jet Fuel...............................................        30.42
------------------------------------------------------------------------


Reconciliation of Week 1 Using Month's End Actual Weighted Average Values                                       
----------------------------------------------------------------------------
							   6 Feed- 7 Amended  
               2  PF    3  Value/  4  Total   5 Relative   stock   wt.avg.   
1  Product    shipments  barrel    value(2)x  value factor distri. duties
               (mbbls)  (wt. avg.) actual(3)   (3)/(8)     (5)x(2)  (6)x  
                                                                    (10)(9)                                                                                    
----------------------------------------------------------------------------
Motor Gasoline..19,977  $35.27    $704,589    1.095716     21,889     $2,298
Total Alkylate..22,907   41.84     958,429    1.299823     29,775      3,126
Heavy Reformate.58,164   30.66   1,783,308     .952499     55,401      5,817
Reformer Feed..100,279   30.54   3,062,521     .948771     95,141      9,990
Raffinates.....170,293   29.69   5,055,999     .922365    157,072     16,493
Jet Fuel.......168,433   30.42   5,123,732     .945043    159,176     16,713
----------------------------------------------------------------------------
    Total......540,053  .....  $16,688,578   .........    518,454     54,437
                                                          (9)          (10)
----------------------------------------------------------------------------

Class III Crude Consumed = 518,454  x  $.105 = $54,437..................
Volumetric Gain 21,599..................................................
Avg.Value/Bbl Crude Consumed = $16,688,578  518,454 = $32.189 
(8).....................................................................

    Note: No change in amended total duties, because duty is computed on 
total quantity of class III crude used. The difference is amongst the 
various products, i.e., estimated weekly CF 7501 duties paid for Motor 
Gasoline was $2,317, while the reconciled amount as shown above is 
$2,298. Additional duties owed or refunds due would depend on the 
reconciliation of the weekly entry as an entirety.

    VII. Weekly entry, monthly manufacturing period, relative values 
   calculated on prior manufacturing period's actual weighted average 
        values. The prior period (PP) values are set forth below:

------------------------------------------------------------------------
                                                           Value/Barrel 
                         Product                            (wt. avg.)  
------------------------------------------------------------------------
Motor Gasoline..........................................     Sec.  35.28
Total Alkylate..........................................           41.90
Heavy Reformate.........................................           31.78
Reformer Feed...........................................           30.02
Raffinates..............................................           31.10
Jet Fuel................................................           28.80
------------------------------------------------------------------

    Thereafter, the information provided or both the CF 3461 and CF 7501 
filed for each weekly entry with respect to relative values would remain 
the same. The only estimated amount would be the quantity to be removed 
on the CF 3461 as shown

[[Page 123]]

below. On the CF 3461 the refiner estimates the following shipments and 
uses a prior manufacturing period's actual weighted average values.

---------------------------------------------------------------------------
                                  2  PF         3  Value/                  
  1  Product                    shipments     barrel  (PP)      4  Total   
                                 (mbbls)       (wt. avg.)         value    
---------------------------------------------------------------------------
Week 1                                                                                                          
    Motor Gasoline............       20,000          $35.28        $705,600
    Total Alkylate............       25,000           41.90       1,047,500
    Heavy Reformate...........       60,000           31.78       1,906,800
    Reformer Feed.............      110,000           30.02       3,302,200
    Raffinates................      200,000           31.10       6,220,000
    Jet Fuel..................      200,000           28.80       5,760,000
                              ----------------------------------------------
      Total...................      615,000  ..............      18,942,100
----------------------------------------------------------------------------

Attributed Feedstock--Class III Crude: 615,000 @ $.105 = $64,575 
(estimated duties)......................................................

    On the CF 7501, the refiner reports the following shipments and uses 
a prior manufacturing period's actual average values.

---------------------------------------------------------------------------
                                              5 Relative            7 Liq.   
                2  PF   3 Value/  4 Total     distri.    Feedstock  duties 
1  Product    shipments  barrel   (PP)Value   factor     (5)x(2)    (6)x     
               (mbbls)  (wt.avg.)  (2)x(3)    (3)/(8)               (10) (9)            
---------------------------------------------------------------------------
Week 1:                                                                                                                                                 
Motor Gasoline..19,977  $35.28    $704,789   1.097219      21,919   $2,902
Total Alkylate..22,907   41.90     959,803   1.303104      29,850    3,134
Heavy Reformate.58,164   31.78   1,848,452    .988368      57,486    6,036
Reformer Feed..100,279   30.02   3,010,376    .933632      93,623    9,830
Raffinates.....170,293   31.10   5,296,112    .967220     164,710   17,295
Jet Fuel.......168,433   28.80   4,850,870    .895689     150,863   15,840
---------------------------------------------------------------------------
      Total....540,053  ...... $16,670,402  .........     518,451  $54,437
                                                           (9)       (10)
---------------------------------------------------------------------------

Class III Crude Used 518,451  x  $.105 = $54,437........................
Volumetric Gain 21,602..................................................
Avg. Value/Barrel Crude Used = $16,670,402  518,451 = $32.154 
(8).....................................................................

-------------------------------------------------------------------------
                                             5 Relative            7 Liq.   
               2  PF   3 Value/  4  Total    Value      Feedstock  duties 
1  Product   shipments  barrel   (PP) value  factor     distri.    (6)x  
              (mbbls)  (wt.avg.) (2)x(3)     (3)/(8)    (5)x(2)    (10) (9)                   
-------------------------------------------------------------------------
Week 2:                                                                                                                                                 
Motor Gasoline..20,651  $35.28    $728,567   1.096128    22,636    $2,377
Total Alkylate..23,435   41.90     981,926   1.301808    30,508     3,203
Heavy Reformate.59,819   31.78   1,901,048    .987386    59,064     6,202
Reformer Feed..101,167   30.02   3,037,033    .932704    94,359     9,908
Raffinates.....172,317   31.10   5,359,059    .966259   166,503    17,483
Jet Fuel.......165,291   28.80   4,760,381    .894799   147,903    15,529
-------------------------------------------------------------------------
     Total....542,680  ....... 16,768,014   ........    520,973    54,702
-------------------------------------------------------------------------

Class III Crude Used 520,973 x $.105=$54,702............................
Volumetric Gain 21,707..................................................
Avg. Value/Barrel Crude Used=$32.186....................................

--------------------------------------------------------------------------
                                  4 Total   5 Relative             7 Liq.   
             2 PF      3 Value/   (PP)      Value       Feedstock  duties 
1  Product   shipments  barrel    value     factor      distri.    (6)x  
             (mbbls)   (wt.avg.)  (2)x(3)   (3)/(8)     (5)x(2)    (10) (9)                  
--------------------------------------------------------------------------
Week 3:                                                                                                                                                 
Motor Gasoline..18,689  $35.28   $659,348   1.099168     20,542    $2,157
Total Alkylate..21,511   41.90    901,311   1.305418     28,081     2,948
Heavy Reformate.57,371   31.78  1,823,250    .990124     56,803     5,964
Reformer Feed...99,707   30.02  2,993,204    .935290     93,254     9,792
Raffinates.....168,112   31.10  5,228,283    .968938    162,889    17,103
Jet Fuel.......172,092   28.80  4,956,250    .897280    154,414    16,214
--------------------------------------------------------------------------
      Total....537,482  ...... 16,561,646   ........    515,983    54,178
--------------------------------------------------------------------------

Class III Crude Used 515,983 x $.105=$54,178............................

[[Page 124]]

Volumetric Gain 21,499..................................................
Avg. Value/Barrel Crude Used=$32.097....................................

--------------------------------------------------------------------------
                                  4 Total    5 Relative            7 Liq.   
               2 PF     3 Value/  (PP)       Value      Feedstock  duties
1  Product    shipments  barrel   value      factor     distri.    (6)x   
              (mbbls)  (wt.avg.)  (2)x(3)    (3)/(8)    (5)x(2)    (10) (9)                 
--------------------------------------------------------------------------
Week 4:                                                                                                                                                 
Motor Gasoline..21,905  $35.28   $772,808   1.097390    24,038     $2,524
Total Alkylate..22,552   41.90    944,929   1.303306    29,391      3,086
Heavy Reformate.58,116   31.78  1,846,926    .988522    57,447      6,032
Reformer Feed..101,058   30.02  3,033,761    .933777    94,365      9,908
Raffinates.....169,823   31.10  5,281,495    .967371   164,281     17,250
Jet Fuel.......171,493   28.80  4,938,998    .895829   153,627     16,131
--------------------------------------------------------------------------
      Total....544,947  ...... 16,818,917  ........    523,149     54,931
--------------------------------------------------------------------------

Class III Crude Used 523,149 x $.105=$54,931............................
Volumetric Gain 21,798..................................................
Avg. Value/Barrel Crude Used=$32.149....................................

--------------------------------------------------------------------------
                                  4 Total   5 Relative              7 Liq.   
               2 PF     3 Value/  (PP)      Value        Feedstock  duties
1  Product   shipments  barrel    value     factor       distri.    (6)x  
               (mbbls) (wt.avg.)  (2)x(3)   (3)/(8)      (5)x(2)    (10) (9)            
--------------------------------------------------------------------------
Week 5:                                                                                                                                                 
Motor Gasoline...8,990  $35.28    $317,167   1.097698     9,868     $1,036
Total Alkylate...9,984   41.90     418,330   1.303671    13,016      1,367
Heavy Reformate.25,351   31.78     805,655    .988799    25,067      2,632
Reformer Feed...43,492   30.02   1,305,630    .934039    40,623      4,265
Raffinates......75,172   31.10   2,337,849    .967642    72,740      7,638
Jet Fuel........75,795   28.80   2,182,896    .896080    67,919      7,131
--------------------------------------------------------------------------
      Total....238,784  ........ 7,367,527  .........  229,233     24,069
--------------------------------------------------------------------------

Class III Crude Used 229,233 x $.105=$24,069............................
Volumetric Gain 9,551...................................................
Avg. Value/Barrel Crude Used=$32.14.....................................

    At the end of the month, the refiner must calculate its actual 
weighted average values for use in the subsequent period.

  Reconciliation of Relative Value for the Subsequent Period                                               
---------------------------------------------------------------------------
                                  4 Total     5 Relative            7 Liq.   
               2 PF     3 Value/  (PP)        Value       Feedstock duties 
1  Product   shipments  barrel    value       factor      distri.   (6)x   
               (mbbls) (wt.avg.)  (2)x(3)     (3)/(8)     (5)x(2)   (10) (9)                  
---------------------------------------------------------------------------
Month End:                                                                                                                                              
Motor Gasoline...90,212  $35.27   $3,181,777  1.095682      98,844  $10,379
Total Alkylate..100,389   41.84    4,200,276  1.299783     130,484   13,701
Heavy Reformate.258,821   30.66    7,935,452   .952470     246,519   25,885
Reformer Feed...445,703   30.54   13,611,770   .948742     422,857   44,400
Raffinates......755,717   29.69   22,437,238   .922336     697,025   73,188
Jet Fuel........753,104   30.42   22,909,424   .945014     711,694   74,726
---------------------------------------------------------------------------
      Total...2,403,946  ........ 74,275,937  ........  2,307,423   242,279
                                                         (9)          (10)
---------------------------------------------------------------------------

Class III Crude Used 2,307,423 x $.105=$242,279.........................
Volumetric Gain 96,523..................................................
Avg. Value/Barrel Crude Used=$74,275,9372,307,423=$32.19 (8)....

    Note: Actual monthly reconciliation data could result in 
attributions on a product basis that are less than or greater than 
weekly distributions. This is due to the ``weighing'' of the data i.e., 
motor gasoline on a weekly basis was $10,996 as compared to $10,379 as 
above. No additional duties are due to the averaging.