------------- ---------- ------------------------------------------ ------------- -------------- ------------ ----------- -------------------------- ---------------------------------- ---------------
  Attachment 3.                                                                                                                                                                           
  Source                                                                                                                                                                                  
  Comparison:                                                                                                                                                                             
  2002 SIP                                                                                                                                                                                
  versus 2007                                                                                                                                                                             
  SIP.                                                                                                                                                                                    

                                                                                                                                                                                          

                \- Source                                                                                                   \- Existing source,                                           
                included                                                                                                    emissions revised as part                                     
                in 2000,                                                                                                    of the 2007 reconciliation                                    
                Removed                                                                                                     work                                                          
                for 2007                                                                                                                                                                  
                SIP                                                                                                                                                                       

                \- New                                                                                                                                                                    
                Source for                                                                                                                                                                
                2007 SIP                                                                                                                                                                  

  **Source ID**            **Source Description**                     **Pb Emission                                         **Emission Factor Units**  **Emission Factor Reference**      **Comment**
                                                                      Factor                                                                                                              
                                                                      (lb/Unit)**                                                                                                         

  **2000 SIP**  **2007                                                **2000 SIP**  **2007 Actual  **2007       **2007                                                                    
                SIP**                                                               Value          Actual Value Design/                                                                   
                                                                                    (Starting)**   (Ending)**   Control**                                                                 

  10001A        Removed    Dump-Concentrate-Unloader (Directly from   1.63E-03                                              Tons-Concentrate-Handled   Test at the trestle operation      Artifact of the
                           Rail)                                                                                                                       (73.75                             old concentrate
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   unloading
                                                                                                                                                                                          system.

                10001A1    Dump-Concentrate-Hopper                                  1.63E-03       1.63E-03     1.63E-03    Tons-Concentrate-Handled   Test at the trestle operation      New source
                                                                                                                                                       (73.75                             added to
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   deliver
                                                                                                                                                                                          concentrate by
                                                                                                                                                                                          truck

                10001A2    Dump-Concentrate-Storage/Railcar                         1.63E-03       1.63E-03     1.63E-03    Tons-Concentrate-Handled   Test at the trestle operation      New source
                                                                                                                                                       (73.75                             added to
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   deliver
                                                                                                                                                                                          concentrate by
                                                                                                                                                                                          truck

                10001B1    Load-Conc.-Railcar (Front End Loader)                    1.63E-03       1.63E-03     1.63E-03    Tons-Concentrate-Handled   Test at the trestle operation      New source
                                                                                                                                                       (73.75                             added to
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   deliver
                                                                                                                                                                                          concentrate by
                                                                                                                                                                                          truck

  10001B        10001B2    Dump-Concentrate-Unloader                  1.63E-03      1.63E-03       1.63E-03     1.63E-03    Tons-Concentrate-Handled   Test at the trestle operation      Source ID
                                                                                                                                                       (73.75                             changed from
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   10001B to
                                                                                                                                                                                          10001B2

  10001C        10001C     Dump-Fume-Unloader                         7.06E-03      7.06E-03       7.06E-03                 Tons-Fume-Handled          Test at the trestle operation      Fume is now
                                                                                                                                                       (3202.22 gr-Pb/100ton-Fume-Dumped) mixed w/
                                                                                                                                                                                          concentrate on
                                                                                                                                                                                          the south end
                                                                                                                                                                                          before going to
                                                                                                                                                                                          the unloader. A
                                                                                                                                                                                          limit was
                                                                                                                                                                                          placed on the
                                                                                                                                                                                          total material
                                                                                                                                                                                          to the
                                                                                                                                                                                          unloader,
                                                                                                                                                                                          therefore
                                                                                                                                                                                          emissions have
                                                                                                                                                                                          been accounted
                                                                                                                                                                                          for in 10001B2
                                                                                                                                                                                          w/ respect to
                                                                                                                                                                                          the 2007
                                                                                                                                                                                          Control
                                                                                                                                                                                          modeling.

  10001D        Removed    Dump-Concentrate-Storage (By Truck)        1.63E-03                                              Tons-Concentrate-Handled   Test at the trestle operation      Artifact of the
                                                                                                                                                       (73.75                             old concentrate
                                                                                                                                                       gr-Pb/100ton-Concentrate-Dumped)   unloading
                                                                                                                                                                                          system.

  20001A,B      20001A,B   Load-Sinter-Railcar/Dump-Sinter-Unloader   1.15E-05      1.15E-05       1.15E-05     1.15E-05    Tons-Sinter-Handled        Test at the trestle operation      No Change

  20002,3       20002,3    Load-Sinter-Truck/Dump-Sinter-Storage      1.15E-05      1.15E-05       1.15E-05     1.15E-05    Tons-Sinter-Handled        Test at the trestle operation      No Change

  20004         20004      Load-Fume-Railcar                          7.06E-03      7.06E-03       7.06E-03     7.06E-03    Tons-Fume-Handled          Test at the trestle operation      No Change
                                                                                                                                                       (3202.22 gr-Pb/100ton-Fume-Dumped) 
  ------------- ---------- ------------------------------------------ ------------- -------------- ------------ ----------- -------------------------- ---------------------------------- ---------------

  ---------- ---------- ----------------------- ------------- -------------- ------------ ----------- -------------------------- ---------------------------------- ----------------
             \- Source                                                                                \- Existing source,                                           
             included                                                                                 emissions revised as part                                     
             in 2000,                                                                                 of the 2007 reconciliation                                    
             Removed                                                                                  work                                                          
             for 2007                                                                                                                                               
             SIP                                                                                                                                                    

             \- New                                                                                                                                                 
             Source for                                                                                                                                             
             2007 SIP                                                                                                                                               

  **Source              **Source Description**  **Pb Emission                                         **Emission Factor Units**  **Emission Factor Reference**      **Comment**
  ID**                                          Factor                                                                                                              
                                                (lb/Unit)**                                                                                                         

  **2000     **2007                             **2000 SIP**  **2007 Actual  **2007       **2007                                                                    
  SIP**      SIP**                                            Value          Actual Value Design/                                                                   
                                                              (Starting)**   (Ending)**   Control**                                                                 

             20004B     Railcar Fume Unloading                               7.06E-03     7.06E-03    Tons-Fume-Handled          Test at the trestle operation      Fume is now
                        (At Storage)                                                                                             (3202.22 gr-Pb/100ton-Fume-Dumped) unloaded and
                                                                                                                                                                    stored at the
                                                                                                                                                                    south storage
                                                                                                                                                                    area. Previously
                                                                                                                                                                    (2000 SIP), fume
                                                                                                                                                                    was dumped
                                                                                                                                                                    directly from
                                                                                                                                                                    railcar to the
                                                                                                                                                                    unloader. This
                                                                                                                                                                    change was noted
                                                                                                                                                                    during the model
                                                                                                                                                                    reconciliation
                                                                                                                                                                    study.

             20004C     Railcar Fume (South,                                 7.06E-03     7.06E-03    Tons-Fume-Handled          Test at the trestle operation      Fume is now
                        Front End Loader)                                                                                        (3202.22 gr-Pb/100ton-Fume-Dumped) unloaded and
                                                                                                                                                                    stored at the
                                                                                                                                                                    south storage
                                                                                                                                                                    area. Previously
                                                                                                                                                                    (2000 SIP), fume
                                                                                                                                                                    was dumped
                                                                                                                                                                    directly from
                                                                                                                                                                    railcar to the
                                                                                                                                                                    unloader. This
                                                                                                                                                                    change was noted
                                                                                                                                                                    during the model
                                                                                                                                                                    reconciliation
                                                                                                                                                                    study.

  20005A-F   20005A-F   Sinter Plant Mix Room   1.63E-03      1.63E-03       1.63E-03     1.63E-03    Tons-Concentrate-Handled   Test at the trestle operation      No Change
                        Fugitives-Concentrate                                                                                    (73.75                             
                        Handling                                                                                                 gr-Pb/100ton-Concentrate-Dumped)   

  20005A-F   20005A-F   Sinter Plant Mix Room   1.15E-05      1.15E-05       1.15E-05                 Tons-Sinter-Handled        Test at the trestle operation      During the
                        Fugitives-Sinter                                                                                                                            development of
                        Handling                                                                                                                                    the control
                                                                                                                                                                    strategy
                                                                                                                                                                    modeling it was
                                                                                                                                                                    noted that
                                                                                                                                                                    sinter is not
                                                                                                                                                                    handled in the
                                                                                                                                                                    mix room.
                                                                                                                                                                    Therefore, these
                                                                                                                                                                    emissions were
                                                                                                                                                                    removed from the
                                                                                                                                                                    inventory.
                                                                                                                                                                    Emissions from
                                                                                                                                                                    this source were
                                                                                                                                                                    not significant
                                                                                                                                                                    with regard to
                                                                                                                                                                    the model
                                                                                                                                                                    reconciliation
                                                                                                                                                                    work.

  20005A-F   20005A-F   Sinter Plant Mix Room   7.06E-03      7.06E-03       7.06E-03     7.06E-03    Tons-Fume-Handled          Test at the trestle operation      No Change
                        Fugitives-Fume Handling                                                                                  (3202.22 gr-Pb/100ton-Fume-Dumped) 

  20006      20006      Sinter Plant Building   8.50E-04      8.50E-04       3.40E-03     3.40E-03    Tons-Sinter-Produced       Personnel Sampling                 During the
                        Fugitives                                                                                                                                   development of
                                                                                                                                                                    the model
                                                                                                                                                                    reconciliation
                                                                                                                                                                    analysis it was
                                                                                                                                                                    noted that the
                                                                                                                                                                    contribution
                                                                                                                                                                    from the sinter
                                                                                                                                                                    plant fugitives
                                                                                                                                                                    was
                                                                                                                                                                    approximately
                                                                                                                                                                    25% of the
                                                                                                                                                                    impact indicated
                                                                                                                                                                    by the CMB
                                                                                                                                                                    analysis. It is
                                                                                                                                                                    believed that
                                                                                                                                                                    personnel
                                                                                                                                                                    sampling will
                                                                                                                                                                    tend to
                                                                                                                                                                    underpredict
                                                                                                                                                                    emissions due to
                                                                                                                                                                    the fact that
                                                                                                                                                                    personnel will
                                                                                                                                                                    tend to stay in
                                                                                                                                                                    cleaner areas of
                                                                                                                                                                    the plant over
                                                                                                                                                                    the course of
                                                                                                                                                                    the shift. The
                                                                                                                                                                    emission factor
                                                                                                                                                                    was multiplied
                                                                                                                                                                    by 4 per
                                                                                                                                                                    discussions with
                                                                                                                                                                    the MDNR.

  20007      20007      Baghouse No. 3          3.28E-05      3.28E-05       3.28E-05     3.28E-05    Tons-Sinter-Produced       In-house testing for the No. 5     No Change
                        Fugitives                                                                                                Baghouse Vents (1981)              
  ---------- ---------- ----------------------- ------------- -------------- ------------ ----------- -------------------------- ---------------------------------- ----------------

  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ---------------------------------------------- ------------- -----------------
             \- Source                                                                        \- Existing source, emissions revised as part                
             included                                                                         of the 2007 reconciliation work                              
             in 2000,                                                                                                                                      
             Removed                                                                                                                                       
             for 2007                                                                                                                                      
             SIP                                                                                                                                           

             \- New                                                                                                                                        
             Source for                                                                                                                                    
             2007 SIP                                                                                                                                      

  **Source              **Source        **Pb Emission                                         **Emission Factor Units**                      **Emission    **Comment**
  ID**                  Description**   Factor                                                                                               Factor        
                                        (lb/Unit)**                                                                                          Reference**   

  **2000     **2007                     **2000 SIP**  **2007 Actual  **2007       **2007                                                                   
  SIP**      SIP**                                    Value          Actual Value Design/                                                                  
                                                      (Starting)**   (Ending)**   Control**                                                                

  30001      30001      Main Stack      1.15E-01      5.70E-02       5.70E-02     794 lb/dy   (Tons-Sinter-Charged)+(Tons-Sinter-Produced)   1999 and 2004 2001 SIP: 1999
                                                                                  Limit                                                      Stack Tests   Test, 2007 Model
                                                                                                                                                           Reconciliation:
                                                                                                                                                           2004 Test, 2007
                                                                                                                                                           Design/Control
                                                                                                                                                           modeling based on
                                                                                                                                                           lb/day limit

  30002A-F   Removed    Blast Furnace   8.20E-02                                              Tons-Sinter-Charged to the Blast Furnace       June 1999     Blast furnace
                        Fugitives                                                                                                            Test          area enclosed and
                                                                                                                                                           ventilated as
                                                                                                                                                           part of the 2000
                                                                                                                                                           SIP. Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for in
                                                                                                                                                           30002.

             30002      Blast Furnace                 4.10E-03       4.10E-03     4.10E-03    Tons-Sinter-Charged to the Blast Furnace       30002-5 2000  New source
                        Fugitives                                                                                                            SIP           
                                                                                                                                             pre-control   
                                                                                                                                             emission      
                                                                                                                                             factor        
                                                                                                                                             (8.23E-02     
                                                                                                                                             lb/ton) with  
                                                                                                                                             a 95% capture 
                                                                                                                                             efficiency    

  30003-5    Removed    Charge Belt     2.64E-04                                              Tons-Rough Lead-Produced                       January 1999  Enclosed as part
                        Roof Vents                                                                                                           Test          of the 2000 SIP.
                                                                                                                                                           Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for in
                                                                                                                                                           30002.

  30011-13   30011-13   Baghouse No. 5  1.70E-05      1.70E-05       1.70E-05     1.70E-05    Tons-Sinter-Charged to the Blast Furnace       In-house      No Change
                        Vents                                                                                                                testing for   
                                                                                                                                             the No. 5     
                                                                                                                                             Baghouse      
                                                                                                                                             Vents (1981)  

  40001-3    Removed    Dross Aerovents 4.35E-02                                              Tons-Rough Lead-Produced                       January 1999  Enclosed as part
                                                                                                                                             Test          of the 2000 SIP.
                                                                                                                                                           Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for in
                                                                                                                                                           40006.

  40004,5    40004,5    Dross Kettle    5.19E-04      5.19E-04       5.19E-04     5.19E-04    Tons-Rough Lead-Produced                       Stack test of No Change
                        Heat Stacks                                                                                                          No. 4 kettle  
                                                                                                                                             heat stack    
                                                                                                                                             (1999)        

             40006      Dross Plant                   6.55E-03       6.55E-03     6.55E-03    Tons-Rough Lead-Produced                       40001-3 2000  New source
                        Fugitives                                                                                                            SIP           
                                                                                                                                             pre-control   
                                                                                                                                             emission      
                                                                                                                                             factor        
                                                                                                                                             (1.31E-01     
                                                                                                                                             lb/ton) with  
                                                                                                                                             a 95% capture 
                                                                                                                                             efficiency    

             40007      Baghouse No. 7                9.48E-03       9.48E-03                 Tons-Sinter-Charged to the Blast Furnace       2002 Stack    Baghouse No. 7
                                                                                                                                             Test          and 9 are vented
                                                                                                                                                           to a common
                                                                                                                                                           stack. A single
                                                                                                                                                           lb/day Pb
                                                                                                                                                           emission limit
                                                                                                                                                           was placed on the
                                                                                                                                                           stack. Emissions
                                                                                                                                                           are accounted for
                                                                                                                                                           in 50007 for 2007
                                                                                                                                                           Design/Control
                                                                                                                                                           modeling.

  50001A-C   Removed    North Refinery  1.08E-01                                              Tons-Refined Lead-Produced                     September     Enclosed as part
                        Roof Monitor                                                                                                         1999 Test     of the 2000 SIP.
                                                                                                                                                           Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for
                                                                                                                                                           50006.

  50002A-C   Removed    South Refinery  1.70E-02                                              Tons-Refined Lead-Produced                     September     Enclosed as part
                        Roof Monitor                                                                                                         1999 Test     of the 2000 SIP.
                                                                                                                                                           Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for
                                                                                                                                                           50006.

  50004,5    Removed    Refinery        5.46E-03                                              Tons-Refined Lead-Produced                     Test          Enclosed as part
                        Aerovents                                                                                                                          of the 2000 SIP.
                                                                                                                                                           Remaining
                                                                                                                                                           emissions
                                                                                                                                                           accounted for
                                                                                                                                                           50006.
  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ---------------------------------------------- ------------- -----------------

  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ----------------------- -------------- ----------------
             \- Source                                                                        \- Existing source,                    
             included                                                                         emissions revised as                   
             in 2000,                                                                         part of the 2007                       
             Removed                                                                          reconciliation work                    
             for 2007                                                                                                                
             SIP                                                                                                                     

             \- New                                                                                                                  
             Source for                                                                                                              
             2007 SIP                                                                                                                

  **Source              **Source        **Pb Emission                                         **Emission Factor       **Emission     **Comment**
  ID**                  Description**   Factor                                                Units**                 Factor         
                                        (lb/Unit)**                                                                   Reference**    

  **2000     **2007                     **2000 SIP**  **2007 Actual  **2007       **2007                                             
  SIP**      SIP**                                    Value          Actual Value Design/                                            
                                                      (Starting)**   (Ending)**   Control**                                          

             50006      Refinery Plant                6.80E-03       6.80E-03     6.80E-03    Tons-Refined            50001-2,4-5    New source
                        Fugitives                                                             Lead-Produced           2000 SIP       
                                                                                                                      pre-control    
                                                                                                                      emission       
                                                                                                                      factor         
                                                                                                                      (1.36E-01      
                                                                                                                      lb/ton) with a 
                                                                                                                      95% capture    
                                                                                                                      efficiency     

             50007      Baghouse No. 8                1.27E-02       1.27E-02     8.2 lb/dy   Tons-Refined            2002 Stack     New source. 2007
                                                                                  Limit       Lead-Produced           Test           Design/Control
                                                                                                                                     modeling based
                                                                                                                                     on lb/day Pb
                                                                                                                                     emission limit.

             50008      Baghouse No. 9                8.58E-02       8.58E-02     56.6 lb/dy  Tons-Refined            2002 Stack     New source. 2007
                                                                                  Limit       Lead-Produced           Test           Design/Control
                                                                                                                                     modeling based
                                                                                                                                     on lb/day Pb
                                                                                                                                     emission limit.
                                                                                                                                     Baghouse No. 7
                                                                                                                                     and 9 are vented
                                                                                                                                     to a common
                                                                                                                                     stack. A single
                                                                                                                                     lb/day Pb
                                                                                                                                     emission limit
                                                                                                                                     was placed on
                                                                                                                                     the stack.

  50011-18   50011-18   Kettle Setting  7.09E-04      7.09E-04       7.09E-04     7.09E-04    Tons-Refined            Stack test of  No Change
                        Heat Stacks                                                           Lead-Produced           No. 3 kettle   
                                                                                                                      heat stack     
                                                                                                                      (1999)         

  60001,2    60001,2    Strip Mill Heat 2.13E-04      2.13E-04       2.13E-04     2.13E-04    Tons-Lead               Stack test of  No Change
                        Stacks                                                                Strip-Produced          No. 3 kettle   
                                                                                                                      heat stack     
                                                                                                                      (1999)         
                                                                                                                      proportioned   
                                                                                                                      down to the    
                                                                                                                      size of the    
                                                                                                                      unit (30% of   
                                                                                                                      the refinery   
                                                                                                                      unit).         
                                                                                                                      0.000709       
                                                                                                                      lb/ton \* 0.3  

  60003      60003      Strip Mill      1.12E-05      1.12E-05       1.12E-05     1.12E-05    Tons-Lead               Uncontrolled   No Change
                        Baghouse                                                              Strip-Produced          emission       
                                                                                                                      factor from    
                                                                                                                      AP-42, Table   
                                                                                                                      2.3-2 (0.0007  
                                                                                                                      lb/ton). A     
                                                                                                                      98.4% control  
                                                                                                                      efficiency for 
                                                                                                                      the fabric     
                                                                                                                      filter was     
                                                                                                                      then utilized  
                                                                                                                      (AP-42, Table  
                                                                                                                      2.3-5).        

  60004      60004      Low Alpha       3.58E-01      3.58E-01       3.58E-01     3.58E-01    Tons-Lead Bearing       Stack Testing  No Change
                        Baghouse                                                              Material-Charged to the (1999). Note   
                                                                                              Low Alpha Furnace       that the       
                                                                                                                      emission       
                                                                                                                      factor used in 
                                                                                                                      the 2000 SIP   
                                                                                                                      was based on   
                                                                                                                      lb-Pb per      
                                                                                                                      lb-charge.     
                                                                                                                      This was       
                                                                                                                      updated to a   
                                                                                                                      lb/ton basis   
                                                                                                                      for            
                                                                                                                      consistency    
                                                                                                                      with other     
                                                                                                                      sources.       

  60005-8    60005-8    Strip Mill Roof 2.21E-03      2.21E-03       2.21E-03     2.21E-03    Tons-Lead               Personnel      No Change
                        Vents                                                                 Strip-Produced          Sampling.      
                                                                                                                      Emission       
                                                                                                                      factor is for  
                                                                                                                      each vent.     

  70001      70001      Fugitive Dross  Varies        Varies         Varies       Varies      Tons-Material-Handled   AP42, Section  No Change
                        Handling                                                                                      13.2.4         
  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ----------------------- -------------- ----------------

  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------
             \- Source                                                                        \- Existing source,                    
             included                                                                         emissions revised as                   
             in 2000,                                                                         part of the 2007                       
             Removed                                                                          reconciliation work                    
             for 2007                                                                                                                
             SIP                                                                                                                     

             \- New                                                                                                                  
             Source for                                                                                                              
             2007 SIP                                                                                                                

  **Source              **Source        **Pb Emission                                         **Emission Factor        **Emission    **Comment**
  ID**                  Description**   Factor                                                Units**                  Factor        
                                        (lb/Unit)**                                                                    Reference**   

  **2000     **2007                     **2000 SIP**  **2007 Actual  **2007       **2007                                             
  SIP**      SIP**                                    Value          Actual Value Design/                                            
                                                      (Starting)**   (Ending)**   Control**                                          

  70003      Removed    Fugitive        Varies                                                Tons-Material-Handled    AP42, Section Emissions now
                        Concentrate                                                                                    13.2.4        accounted for in
                        Handling                                                                                                     10001A2

  70007      70007      Fugitive Slag   Varies        Varies         Varies       Varies      Tons-Material-Handled    AP42, Section No Change
                        Handling                                                                                       13.2.4        

  70009      70009      Fugitive        Varies        Varies         Varies       Varies      Tons-Material-Handled    AP42, Section No Change
                        Secondaries                                                                                    13.2.4        
                        Handling                                                                                                     

  70002      70002      Dross Storage   Varies        Varies         Varies       Varies      m2-hr                    AP42, Section No Change
                        Fugitive Wind                                                                                  13.2.5        
                        Erosion                                                                                                      

  70004      70004      Conc. Storage   Varies        Varies         Varies       Varies      m2-hr                    AP42, Section No Change
                        Fugitive Wind                                                                                  13.2.5        
                        Erosion                                                                                                      

  70006      70006      Sinter Storage  Varies        Varies         Varies       Varies      m2-hr                    AP42, Section No Change
                        Fugitive Wind                                                                                  13.2.5        
                        Erosion                                                                                                      

  70008      70008A,B   Slag Storage    Varies        Varies         Varies       Varies      m2-hr                    AP42, Section Divided into two
                        Fugitive Wind                                                                                  13.2.5        sources to better
                        Erosion                                                                                                      represent the slag
                                                                                                                                     storage area.

  70010      70010      Sec Storage     Varies        Varies         Varies       Varies      m2-hr                    AP42, Section No Change
                        Fugitive Wind                                                                                  13.2.5        
                        Erosion                                                                                                      

  70020-27   Removed    Road Segment A  Varies                                                Vehicle-Miles-Traveled   E=0.077 (4/n) Haul Routes
                                                                                                                       (s/10)        redefined to give
                                                                                                                       (L/1000)      better resolution of
                                                                                                                       (W/3)0.7      the in-plant and
                                                                                                                                     out-plant haul
                                                                                                                                     routes. Emissions
                                                                                                                                     also improved to
                                                                                                                                     account for daily
                                                                                                                                     fluctuations in
                                                                                                                                     material
                                                                                                                                     delivery/shipping.

  70040-55   Removed    Road Segment B1 Varies                                                Vehicle-Miles-Traveled   E=0.077 (4/n) Haul Routes
                                                                                                                       (s/10)        redefined to give
                                                                                                                       (L/1000)      better resolution of
                                                                                                                       (W/3)0.7      the in-plant and
                                                                                                                                     out-plant haul
                                                                                                                                     routes. Emissions
                                                                                                                                     also improved to
                                                                                                                                     account for daily
                                                                                                                                     fluctuations in
                                                                                                                                     material
                                                                                                                                     delivery/shipping.

  70060-64   Removed    Road Segment B2 Varies                                                Vehicle-Miles-Traveled   E=5.9k (s/12) Haul Routes
                                                                                                                       (S/30)        redefined to give
                                                                                                                       (W/3)0.7      better resolution of
                                                                                                                       (w/4)0.5      the in-plant and
                                                                                                                                     out-plant haul
                                                                                                                                     routes. Emissions
                                                                                                                                     also improved to
                                                                                                                                     account for daily
                                                                                                                                     fluctuations in
                                                                                                                                     material
                                                                                                                                     delivery/shipping.
  ---------- ---------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------

  ---------- ----------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------
             \- Source                                                                         \- Existing source,                    
             included in                                                                       emissions revised as                   
             2000,                                                                             part of the 2007                       
             Removed for                                                                       reconciliation work                    
             2007 SIP                                                                                                                 

             \- New                                                                                                                   
             Source for                                                                                                               
             2007 SIP                                                                                                                 

  **Source               **Source        **Pb Emission                                         **Emission Factor        **Emission    **Comment**
  ID**                   Description**   Factor                                                Units**                  Factor        
                                         (lb/Unit)**                                                                    Reference**   

  **2000     **2007                      **2000 SIP**  **2007 Actual  **2007       **2007                                             
  SIP**      SIP**                                     Value          Actual Value Design/                                            
                                                       (Starting)**   (Ending)**   Control**                                          

  70070-79   Removed     Road Segment C  Varies                                                Vehicle-Miles-Traveled   E=0.077 (4/n) Haul Routes
                                                                                                                        (s/10)        redefined to give
                                                                                                                        (L/1000)      better resolution of
                                                                                                                        (W/3)0.7      the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

  70080-85   Removed     Road Segment D  Varies                                                Vehicle-Miles-Traveled   E=0.077 (4/n) Haul Routes
                                                                                                                        (s/10)        redefined to give
                                                                                                                        (L/1000)      better resolution of
                                                                                                                        (W/3)0.7      the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70100-122   Hwy 55 to                     Varies         Varies       3.45E-03    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Joachim Bridge                                                                                 13.2.1,       redefined to give
                         Exit (Segment                                                                                  Equation 1    better resolution of
                         A-B)                                                                                                         the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70150-213   Joachim Bridge                Varies         Varies       1.24E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Exit to Plant                                                                                  13.2.1,       redefined to give
                         Entrance                                                                                       Equation 1    better resolution of
                         (Segment B-C)                                                                                                the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70250-252   Plant Entrance                Varies         Varies       2.26E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         to NW Corner of                                                                                13.2.1,       redefined to give
                         Strip Mill                                                                                     Equation 1    better resolution of
                         Building                                                                                                     the in-plant and
                         (Segment C-D)                                                                                                out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70300       NW Corner of                  Varies         Varies       3.97E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Strip Mill                                                                                     13.2.1,       redefined to give
                         Building to                                                                                    Equation 1    better resolution of
                         Concentrate                                                                                                  the in-plant and
                         Hopper (Segment                                                                                              out-plant haul
                         D-E)                                                                                                         routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70350-358   Concentrate                   Varies         Varies       1.50E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Hopper to SW                                                                                   13.2.1,       redefined to give
                         Corner of Strip                                                                                Equation 1    better resolution of
                         Mill Building                                                                                                the in-plant and
                         (Segment E-F)                                                                                                out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.
  ---------- ----------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------

  ---------- ----------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------
             \- Source                                                                         \- Existing source,                    
             included in                                                                       emissions revised as                   
             2000,                                                                             part of the 2007                       
             Removed for                                                                       reconciliation work                    
             2007 SIP                                                                                                                 

             \- New                                                                                                                   
             Source for                                                                                                               
             2007 SIP                                                                                                                 

  **Source               **Source        **Pb Emission                                         **Emission Factor        **Emission    **Comment**
  ID**                   Description**   Factor                                                Units**                  Factor        
                                         (lb/Unit)**                                                                    Reference**   

  **2000     **2007                      **2000 SIP**  **2007 Actual  **2007       **2007                                             
  SIP**      SIP**                                     Value          Actual Value Design/                                            
                                                       (Starting)**   (Ending)**   Control**                                          

             70400-406   NW Corner of                  Varies         Varies       1.71E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Strip Mill                                                                                     13.2.1,       redefined to give
                         Building to SW                                                                                 Equation 1    better resolution of
                         Corner of Strip                                                                                              the in-plant and
                         Mill Building                                                                                                out-plant haul
                         (Segment D-F)                                                                                                routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70450-454   SW Corner of                  Varies         Varies       2.47E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Strip Mill                                                                                     13.2.1,       redefined to give
                         Building to                                                                                    Equation 1    better resolution of
                         North End of                                                                                                 the in-plant and
                         Slag Haul Road                                                                                               out-plant haul
                         (Segment F-G)                                                                                                routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70500-513   North End of                  Varies         Varies       3.01E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Slag Haul Road                                                                                 13.2.1,       redefined to give
                         to Refinery                                                                                    Equation 1    better resolution of
                         Dock (Segment                                                                                                the in-plant and
                         G-H)                                                                                                         out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70550-553   South Slag Haul               Varies         Varies       3.83E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Road (Paved)                                                                                   13.2.1,       redefined to give
                         (Segment G-K)                                                                                  Equation 1    better resolution of
                                                                                                                                      the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70600-612   North End of                  Varies         Varies       1.13E+00    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Main Building                                                                                  13.2.2,       redefined to give
                         to Refinery                                                                                    Equation 1a   better resolution of
                         Dock (Unpaved)                                                                                               the in-plant and
                         (Segment H-L)                                                                                                out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70650-669   Sinter Plant to               Varies         Varies       3.83E-02    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Sinter Storage                                                                                 13.2.1,       redefined to give
                         (Segment I-J)                                                                                  Equation 1    better resolution of
                                                                                                                                      the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.

             70700-703   South Slag Haul               Varies         Varies       3.18E-01    Vehicle-Miles-Traveled   AP42, Section Haul Routes
                         Road (Unpaved)                                                                                 13.2.2,       redefined to give
                         (Segment K-M)                                                                                  Equation 1a   better resolution of
                                                                                                                                      the in-plant and
                                                                                                                                      out-plant haul
                                                                                                                                      routes. Emissions
                                                                                                                                      also improved to
                                                                                                                                      account for daily
                                                                                                                                      fluctuations in
                                                                                                                                      material
                                                                                                                                      delivery/shipping.
  ---------- ----------- --------------- ------------- -------------- ------------ ----------- ------------------------ ------------- --------------------