

  
50 % difference
  
Wickman, Trent R -FS  
 to:
 Randall Robinson
                                                            11/27/2012 01:29 PM

 
Cc:
 Steven Rosenthal
 
                                                                               
 




 From:
"Wickman, Trent R -FS" <twickman@fs.fed.us>
                                                                               



 To:
Randall Robinson/R5/USEPA/US@EPA, 




 Cc:
Steven Rosenthal/R5/USEPA/US@EPA






Randy - I copied the following out of the "UTac" tab of the "modeled limits" spreadsheet steve has on your network in the "Trent" folder.  You'll see at the bottom how I came up with a combined 50% less NOx and SO2 reductions modeled by cliffs than what the FIP called for
 
 
 
 
 
 
 
 
 
LINE 1 - Emission reductions modeled by Cliffs (2012)



 
base*
 
FIP


 
NOx
SO2
NOx
SO2

 
                                                                           43.6
                                                                           37.2
                                                                           23.1
                                                                            2.3
g/s
 
                                                                            346
                                                                            295
                                                                            183
                                                                             18
lb/hr
 
                                                                           1519
                                                                           1296
                                                                            805
                                                                             80
tpy @ 8760
                                                                            714
                                                                           1216
 
 
difference






LINE 1 - FIP numbers
 
 
 
                                                                           1643
                                                                           1293
                                                                            493
                                                                            129
70% and 90% CE
                                                                           1150
                                                                           1164
 
 
difference






LINE 2 - Emission reductions modeled by Cliffs (2012)
 
 
 
 
base*
 
FIP


 
NOx
SO2
NOx
SO2

 
                                                                          25.11
                                                                          31.91
                                                                          25.44
                                                                           2.38
g/s - SV48
                                                                           21.4
                                                                          27.18
                                                                          21.67
                                                                           2.03
g/s - SV49
                                                                            199
                                                                            253
                                                                            202
                                                                             19
lb/hr - SV48
                                                                            170
                                                                            216
                                                                            172
                                                                             16
lb/hr - SV49
                                                                            369
                                                                            469
                                                                            374
                                                                             35
lb/hr - total
                                                                           1621
                                                                           2059
                                                                           1641
                                                                            154
tpy - total
                                                                            -21
                                                                           1905
 
 
difference






LINE 2 - FIP numbers
 
 
 
                                                                           3687
                                                                           2750
                                                                           1106
                                                                            248
70% and 90% CE
                                                                           2581
                                                                           2475
 
 
difference






Facility Total
 
 
 
 
                                                                           3140
                                                                           3355
base
Cliffs 2012 Modeling
                                                                            693
                                                                           3121
difs
 
 
 
                                                                           5330
                                                                           4043
base
FIP

 
                                                                           3731
                                                                           3639
difs
 
 
 
                                                                       0.185844
                                                                       0.857729
                                                                       0.517593





total



 
 
 
Trent Wickman, P.E.
Air Resource Management
Great Lakes National Forests - Eastern Region
USDA Forest Service
stationed on the - Superior National Forest
8901 Grand Avenue Place
Duluth, MN  55808
ph# 218-626-4372
cell# 218-341-8646
fx# 218-626-4398
twickman@fs.fed.us
 


