**Presentation to Utility MACT Stakeholder Group**

**December 18, 2001**

*By Ranking Workgroup:*

Felice Stadler

Pat Raher

Praveen Amar

Using the spreadsheet provided by the U.S. EPA, we were asked to rank
the stack test data, and anticipate some of the questions that may be
raised during this process.

The workgroup agreed that the first step was to rank the coal-fired
boilers using, what we referred to as, "value neutral" criteria. In
other words, we did not rank by boiler type, fuel type, or stack
controls.

Our goal was to rank boilers based on their performance, which we
defined in terms of the rate of mercury emitted from the stack. We
intended to rank the boilers in two ways: 1. lbs/TBtu (F factor); 2.
lbs/MWh. With the data supplied by EPA we were able to do the first
part; additional data will need to be compiled (specifically the heat
rate of each boiler) in order to calculate an output-based emission
rate.

Ranking the data by just looking at what comes out of the stack allowed
us to gain a better understanding of the operations of the top
performing fleet (boiler type, fuel type, existing controls).

Below is a profile of the top ten plants (those with the lowest lbs/TBtu
emission rate. (Refer to Maxwell's definitions for explanation of
abbreviations.)

**[Top 10 (lbs/TBtu from 0.0816-0.3348):]{.underline}**

**Boiler type:**

3 FBC

1 Stoker

6 PC

**Fuel type (during test):**

2 waste bit.

1 bit./pet coke

7 bit.

**PM controls:**

9 baghouses

1 ESP-CS

**NOx controls:**

4 NOx combustion (see Maxwell's definitions)

2 SNCR

2 SCR

2 no controls

**SO2 controls:**

3 FBC

4 SDA

2 compliant coal

1 wet scrubber

Attached are several tables ranking the stack test data by emission rate
(lb/TBtu), and then emission rate grouped by boiler type and fuel type.
This was done to help illustrate that variation exists---in some cases
it is significant.

The bottom line is that the performance of an individual boiler depends
on a combination of factors, including things like boiler efficiency,
which need to be considered collectively.

**A necessary next step is calculating an output-based emission rate to
ensure that this option is on the table. This is the only method that
guarantees the inclusion of boiler efficiency as one of the methods for
achieving higher performance (i.e., a lower emission rate).**

**Ranked by lb/TBtu**

  ------------------------- -------- ---------- ----------------- --------- -------- -----------
  **Plant name**            **Unit   **Boiler   **PM control**    **FGD**   **Fuel   **F factor
                            name**   Type**                                 in       lb/TBtu out
                                                                            test**   control**

  Kline Township Cogen      GEN1     FBC        BAGHOUSE                    WASTE B  0.0816
  Facility                                                                           

  Scrubgrass Generating     GEN1     FBC        BAGHOUSE                    WASTE B  0.0936
  Company L.P.                                                                       

  Mecklenburg Cogeneration  GEN 1    PC         BAGHOUSE                    B        0.1062
  Facility                                                                           

  Dwayne Collier Battle     2B       STOKER     BAGHOUSE                    B        0.1074
  Cogeneration Facility                                                              

  Valmont                   5        PC         BAGHOUSE                    B        0.1268

  Stockton Cogen Company    GEN1     FBC        BAGHOUSE                    B/PET    0.1316

  SEI - Birchwood Power     1        PC         BAGHOUSE                    B        0.2379
  Facility                                                                           

  Intermountain             2SGA     PC         BAGHOUSE          Y         B        0.2466

  Logan Generating Plant    GEN 1    PC         BAGHOUSE                    B        0.2801

  Salem Harbor              3        PC         ESP-CS                      B        0.3348

  Clover Power Station      2        PC         BAGHOUSE          Y         B        0.3529

  AES Hawaii, Inc.          A        FBC        BAGHOUSE                    SB       0.4606

  Clay Boswell              2        PC         BAGHOUSE                    SB       0.6633

  Craig                     C3       PC         BAGHOUSE                    SB       0.7248

  W.H. Sammis               1        PC         BAGHOUSE                    B        0.8291

  Charles R. Lowman         2        PC         ESP-HS            Y         B        0.9706

  Shawnee Fossil Plant      3        PC         BAGHOUSE                    B/SB     1.0507

  Cholla                    3        PC         ESP-HS                      SB       1.2066

  Presque Isle              6        PC         ESP-CS                      B/PET    1.2217

  Presque Isle              5        PC         ESP-CS                      B/PET    1.2622

  Widows Creek Fossil Plant 6        PC         ESP-CS                      B        1.3986

  Craig                     C1       PC         ESP-HS            Y         SB       1.4456

  Big Bend                  BB03     TURBO      ESP-CS            Y         B        1.5652

  Valley                    2        PC         BAGHOUSE                    B/PET    1.6630

  Meramec                   4        PC         ESP-CS                      SB/B     1.7255

  AES Cayuga (NY) (formerly 2        PC         ESP-CS            Y         B        2.0652
  NYSEG Milliken)                                                                    

  R.D. Morrow, Sr.          2        PC         ESP-HS            Y         B        2.1269
  Generating Plant                                                                   

  Nelson Dewey              1        CYCLONE    ESP-HS                      SB/PET   2.1349

  Bailly                    7        CYCLONE    ESP-CS            Y         B        2.2306

  Coronado                  U1B      PC         ESP-HS            Y         SB       2.4468

  Comanche                  2        PC         BAGHOUSE                    SB       2.5931

  Navajo                    3        PC         ESP-HS            Y         B        2.7359

  Jack Watson               4        PC         ESP-CS                      B        2.9333

  Laramie River Station     1        PC         ESP-CS            Y         SB       3.0184

  Cholla                    2        PC         MECH/PARTSCRUB    Y         SB       3.1864

  Brayton Point             1        PC         ESP-CS                      B        3.2000

  Laramie River Station     3        PC         ESP-CS                      SB       3.3411

  Bay Front Plant           5        CYCLONE    MECH                        B        3.5792

  Brayton Point             3        PC         ESP-CS                      B        3.6979

  St. Clair Power Plant     4        PC         ESP-CS                      SB/B     3.9076

  R.M. Heskett Station      B2       FBC        ESP-CS                      L        3.9768

  Antelope Valley Station   B1       PC         BAGHOUSE                    L        4.0042

  Leland Olds Station       2        CYCLONE    ESP-CS                      L        4.0233

  Clay Boswell              3        PC         PARTSCRUB         Y         SB       4.0454

  San Juan                  2        PC         ESP-HS            Y         SB       4.2854

  Cliffside                 1        PC         ESP-HS                      B        4.3223

  Clay Boswell              4        PC         PARTSCRUB         Y         SB       4.4550

  Jim Bridger               BW 74    PC         ESP-CS            Y         SB       4.7040

  Presque Isle              9        PC         ESP-HS                      SB       5.0738

  Lawrence                  4        PC         PARTSCRUB         Y         SB       5.1181

  Wabash River Generating   1 + 1A   COAL GAS   NONE                        B        5.3343
  Station                                                                            

  Polk Power                1        COAL GAS   NONE                        B        5.4713

  La Cygne                  1        CYCLONE    PARTSCRUB         Y         SB       5.5140

  Colstrip                  3        PC         PARTSCRUB         Y         SB       5.7264

  Montrose                  1        PC         ESP-CS                      SB       5.8573

  Gaston                    1        PC         ESP-HS                      B        6.0738

  Stanton Station           10       PC         BAGHOUSE                    L        6.2517

  Port Washington           4        PC         ESP-CS                      B        6.6916

  Dunkirk                   2        PC         ESP-HS                      B        6.8030

  Clifty Creek              6        PC         ESP-HS                      SB/B     6.8745

  Stanton Station           1        PC         ESP-CS                      L        6.9024

  Newton                    2        PC         ESP-CS                      SB       6.9877

  Wyodak                    BW 91    PC         ESP-CS                      SB       7.0701

  Bruce Mansfield           1        PC         PARTSCRUB                   B        7.0985

  Sherburne County          #3       PC         BAGHOUSE                    SB       7.5401
  Generating Plant                                                                   

  George Neal South         4        PC         ESP-CS                      SB       7.7269

  Rawhide                   101      PC         BAGHOUSE                    SB       7.7630

  Coyote                    1        CYCLONE    BAGHOUSE                    L        7.9523

  Sam Seymour               3        PC         ESP-CS            Y         SB       8.6353

  GRDA                      2        PC         ESP-CS                      SB/B     8.6918

  Gibson Generating Station 3        PC         ESP-CS                      B        9.7452
  (1099)                                                                             

  Columbia                  1        PC         ESP-HS                      SB       10.3097

  Platte                    1        PC         ESP-HS                      SB       10.6121

  Lewis & Clark             B1       PC         PARTSCRUB                   L        10.8315

  TNP-One                   U2       FBC        BAGHOUSE                    L        10.8596

  Limestone                 LIM1     PC         ESP-CS            Y         L        13.6612

  Monticello                3        PC         ESP-CS            Y         L        18.3232

  Gibson Generating Station 3        PC         ESP-CS                      B        29.0614
  (0300)                                                                             

  Big Brown                 1        PC         ESP-CS/BAGHOUSE             L        30.0889

  Monticello                1        PC         ESP-CS/BAGHOUSE             L        55.8686
  ------------------------- -------- ---------- ----------------- --------- -------- -----------

**Ranked by lb/TBtu and boiler type**

  ------------------------- -------- ---------- ----------------- --------- -------- -----------
  **Plant name**            **Unit   **Boiler   **PM control**    **FGD**   **Fuel   **F factor
                            name**   Type**                                 in       lb/TBtu out
                                                                            test**   control**

  Nelson Dewey              1        CYCLONE    ESP-HS                      SB/PET   2.1349

  Bailly                    7        CYCLONE    ESP-CS            Y         B        2.2306

  Bay Front Plant           5        CYCLONE    MECH                        B        3.5792

  Leland Olds Station       2        CYCLONE    ESP-CS                      L        4.0233

  La Cygne                  1        CYCLONE    PARTSCRUB         Y         SB       5.5140

  Coyote                    1        CYCLONE    BAGHOUSE                    L        7.9523

  Kline Township Cogen      GEN1     FBC        BAGHOUSE                    WASTE B  0.0816
  Facility                                                                           

  Scrubgrass Generating     GEN1     FBC        BAGHOUSE                    WASTE B  0.0936
  Company L.P.                                                                       

  Stockton Cogen Company    GEN1     FBC        BAGHOUSE                    B/PET    0.1316

  AES Hawaii, Inc.          A        FBC        BAGHOUSE                    SB       0.4606

  R.M. Heskett Station      B2       FBC        ESP-CS                      L        3.9768

  TNP-One                   U2       FBC        BAGHOUSE                    L        10.8596

  Mecklenburg Cogeneration  GEN 1    PC         BAGHOUSE                    B        0.1062
  Facility                                                                           

  Valmont                   5        PC         BAGHOUSE                    B        0.1268

  SEI - Birchwood Power     1        PC         BAGHOUSE                    B        0.2379
  Facility                                                                           

  Intermountain             2SGA     PC         BAGHOUSE          Y         B        0.2466

  Logan Generating Plant    GEN 1    PC         BAGHOUSE                    B        0.2801

  Salem Harbor              3        PC         ESP-CS                      B        0.3348

  Clover Power Station      2        PC         BAGHOUSE          Y         B        0.3529

  Clay Boswell              2        PC         BAGHOUSE                    SB       0.6633

  Craig                     C3       PC         BAGHOUSE                    SB       0.7248

  W.H. Sammis               1        PC         BAGHOUSE                    B        0.8291

  Charles R. Lowman         2        PC         ESP-HS            Y         B        0.9706

  Shawnee Fossil Plant      3        PC         BAGHOUSE                    B/SB     1.0507

  Cholla                    3        PC         ESP-HS                      SB       1.2066

  Presque Isle              6        PC         ESP-CS                      B/PET    1.2217

  Presque Isle              5        PC         ESP-CS                      B/PET    1.2622

  Widows Creek Fossil Plant 6        PC         ESP-CS                      B        1.3986

  Craig                     C1       PC         ESP-HS            Y         SB       1.4456

  Valley                    2        PC         BAGHOUSE                    B/PET    1.6630

  Meramec                   4        PC         ESP-CS                      SB/B     1.7255

  AES Cayuga (NY) (formerly 2        PC         ESP-CS            Y         B        2.0652
  NYSEG Milliken)                                                                    

  R.D. Morrow, Sr.          2        PC         ESP-HS            Y         B        2.1269
  Generating Plant                                                                   

  Coronado                  U1B      PC         ESP-HS            Y         SB       2.4468

  Comanche                  2        PC         BAGHOUSE                    SB       2.5931

  Navajo                    3        PC         ESP-HS            Y         B        2.7359

  Jack Watson               4        PC         ESP-CS                      B        2.9333

  Laramie River Station     1        PC         ESP-CS            Y         SB       3.0184

  Cholla                    2        PC         MECH/PARTSCRUB    Y         SB       3.1864

  Brayton Point             1        PC         ESP-CS                      B        3.2000

  Laramie River Station     3        PC         ESP-CS                      SB       3.3411

  Brayton Point             3        PC         ESP-CS                      B        3.6979

  St. Clair Power Plant     4        PC         ESP-CS                      SB/B     3.9076

  Antelope Valley Station   B1       PC         BAGHOUSE                    L        4.0042

  Clay Boswell              3        PC         PARTSCRUB         Y         SB       4.0454

  San Juan                  2        PC         ESP-HS            Y         SB       4.2854

  Cliffside                 1        PC         ESP-HS                      B        4.3223

  Clay Boswell              4        PC         PARTSCRUB         Y         SB       4.4550

  Jim Bridger               BW 74    PC         ESP-CS            Y         SB       4.7040

  Presque Isle              9        PC         ESP-HS                      SB       5.0738

  Lawrence                  4        PC         PARTSCRUB         Y         SB       5.1181

  Colstrip                  3        PC         PARTSCRUB         Y         SB       5.7264

  Montrose                  1        PC         ESP-CS                      SB       5.8573

  Gaston                    1        PC         ESP-HS                      B        6.0738

  Stanton Station           10       PC         BAGHOUSE                    L        6.2517

  Port Washington           4        PC         ESP-CS                      B        6.6916

  Dunkirk                   2        PC         ESP-HS                      B        6.8030

  Clifty Creek              6        PC         ESP-HS                      SB/B     6.8745

  Stanton Station           1        PC         ESP-CS                      L        6.9024

  Newton                    2        PC         ESP-CS                      SB       6.9877

  Wyodak                    BW 91    PC         ESP-CS                      SB       7.0701

  Bruce Mansfield           1        PC         PARTSCRUB                   B        7.0985

  Sherburne County          #3       PC         BAGHOUSE                    SB       7.5401
  Generating Plant                                                                   

  George Neal South         4        PC         ESP-CS                      SB       7.7269

  Rawhide                   101      PC         BAGHOUSE                    SB       7.7630

  Sam Seymour               3        PC         ESP-CS            Y         SB       8.6353

  GRDA                      2        PC         ESP-CS                      SB/B     8.6918

  Gibson Generating Station 3        PC         ESP-CS                      B        9.7452
  (1099)                                                                             

  Columbia                  1        PC         ESP-HS                      SB       10.3097

  Platte                    1        PC         ESP-HS                      SB       10.6121

  Lewis & Clark             B1       PC         PARTSCRUB                   L        10.8315

  Limestone                 LIM1     PC         ESP-CS            Y         L        13.6612

  Monticello                3        PC         ESP-CS            Y         L        18.3232

  Gibson Generating Station 3        PC         ESP-CS                      B        29.0614
  (0300)                                                                             

  Big Brown                 1        PC         ESP-CS/BAGHOUSE             L        30.0889

  Monticello                1        PC         ESP-CS/BAGHOUSE             L        55.8686

  Dwayne Collier Battle     2B       STOKER     BAGHOUSE                    B        0.1074
  Cogeneration Facility                                                              

  Big Bend                  BB03     TURBO      ESP-CS            Y         B        1.5652

  Wabash River Generating   1 + 1A   COAL GAS   NONE                        B        5.3343
  Station                                                                            

  Polk Power                1        COAL GAS   NONE                        B        5.4713
  ------------------------- -------- ---------- ----------------- --------- -------- -----------

**Ranked by lb/TBtu and fuel type**

  ------------------------- -------- -------- ---------- ----------------- --------- -----------
  **Plant name**            **Unit   **Fuel   **Boiler   **PM control**    **FGD**   **F factor
                            name**   in       Type**                                 lb/TBtu out
                                     test**                                          control**

  Mecklenburg Cogeneration  GEN 1    B        PC         BAGHOUSE                    0.1062
  Facility                                                                           

  Dwayne Collier Battle     2B       B        STOKER     BAGHOUSE                    0.1074
  Cogeneration Facility                                                              

  Valmont                   5        B        PC         BAGHOUSE                    0.1268

  Stockton Cogen Company    GEN1     B/PET    FBC        BAGHOUSE                    0.1316

  SEI - Birchwood Power     1        B        PC         BAGHOUSE                    0.2379
  Facility                                                                           

  Intermountain             2SGA     B        PC         BAGHOUSE          Y         0.2466

  Logan Generating Plant    GEN 1    B        PC         BAGHOUSE                    0.2801

  Salem Harbor              3        B        PC         ESP-CS                      0.3348

  Clover Power Station      2        B        PC         BAGHOUSE          Y         0.3529

  W.H. Sammis               1        B        PC         BAGHOUSE                    0.8291

  Charles R. Lowman         2        B        PC         ESP-HS            Y         0.9706

  Shawnee Fossil Plant      3        B/SB     PC         BAGHOUSE                    1.0507

  Presque Isle              6        B/PET    PC         ESP-CS                      1.2217

  Presque Isle              5        B/PET    PC         ESP-CS                      1.2622

  Widows Creek Fossil Plant 6        B        PC         ESP-CS                      1.3986

  Big Bend                  BB03     B        TURBO      ESP-CS            Y         1.5652

  Valley                    2        B/PET    PC         BAGHOUSE                    1.6630

  AES Cayuga (NY) (formerly 2        B        PC         ESP-CS            Y         2.0652
  NYSEG Milliken)                                                                    

  R.D. Morrow, Sr.          2        B        PC         ESP-HS            Y         2.1269
  Generating Plant                                                                   

  Bailly                    7        B        CYCLONE    ESP-CS            Y         2.2306

  Navajo                    3        B        PC         ESP-HS            Y         2.7359

  Jack Watson               4        B        PC         ESP-CS                      2.9333

  Brayton Point             1        B        PC         ESP-CS                      3.2000

  Bay Front Plant           5        B        CYCLONE    MECH                        3.5792

  Brayton Point             3        B        PC         ESP-CS                      3.6979

  Cliffside                 1        B        PC         ESP-HS                      4.3223

  Wabash River Generating   1 + 1A   B        COAL GAS   NONE                        5.3343
  Station                                                                            

  Polk Power                1        B        COAL GAS   NONE                        5.4713

  Gaston                    1        B        PC         ESP-HS                      6.0738

  Port Washington           4        B        PC         ESP-CS                      6.6916

  Dunkirk                   2        B        PC         ESP-HS                      6.8030

  Bruce Mansfield           1        B        PC         PARTSCRUB                   7.0985

  Gibson Generating Station 3        B        PC         ESP-CS                      9.7452
  (1099)                                                                             

  Gibson Generating Station 3        B        PC         ESP-CS                      29.0614
  (0300)                                                                             

  R.M. Heskett Station      B2       L        FBC        ESP-CS                      3.9768

  Antelope Valley Station   B1       L        PC         BAGHOUSE                    4.0042

  Leland Olds Station       2        L        CYCLONE    ESP-CS                      4.0233

  Stanton Station           10       L        PC         BAGHOUSE                    6.2517

  Stanton Station           1        L        PC         ESP-CS                      6.9024

  Coyote                    1        L        CYCLONE    BAGHOUSE                    7.9523

  Lewis & Clark             B1       L        PC         PARTSCRUB                   10.8315

  TNP-One                   U2       L        FBC        BAGHOUSE                    10.8596

  Limestone                 LIM1     L        PC         ESP-CS            Y         13.6612

  Monticello                3        L        PC         ESP-CS            Y         18.3232

  Big Brown                 1        L        PC         ESP-CS/BAGHOUSE             30.0889

  Monticello                1        L        PC         ESP-CS/BAGHOUSE             55.8686

  AES Hawaii, Inc.          A        SB       FBC        BAGHOUSE                    0.4606

  Clay Boswell              2        SB       PC         BAGHOUSE                    0.6633

  Craig                     C3       SB       PC         BAGHOUSE                    0.7248

  Cholla                    3        SB       PC         ESP-HS                      1.2066

  Craig                     C1       SB       PC         ESP-HS            Y         1.4456

  Meramec                   4        SB/B     PC         ESP-CS                      1.7255

  Nelson Dewey              1        SB/PET   CYCLONE    ESP-HS                      2.1349

  Coronado                  U1B      SB       PC         ESP-HS            Y         2.4468

  Comanche                  2        SB       PC         BAGHOUSE                    2.5931

  Laramie River Station     1        SB       PC         ESP-CS            Y         3.0184

  Cholla                    2        SB       PC         MECH/PARTSCRUB    Y         3.1864

  Laramie River Station     3        SB       PC         ESP-CS                      3.3411

  St. Clair Power Plant     4        SB/B     PC         ESP-CS                      3.9076

  Clay Boswell              3        SB       PC         PARTSCRUB         Y         4.0454

  San Juan                  2        SB       PC         ESP-HS            Y         4.2854

  Clay Boswell              4        SB       PC         PARTSCRUB         Y         4.4550

  Jim Bridger               BW 74    SB       PC         ESP-CS            Y         4.7040

  Presque Isle              9        SB       PC         ESP-HS                      5.0738

  Lawrence                  4        SB       PC         PARTSCRUB         Y         5.1181

  La Cygne                  1        SB       CYCLONE    PARTSCRUB         Y         5.5140

  Colstrip                  3        SB       PC         PARTSCRUB         Y         5.7264

  Montrose                  1        SB       PC         ESP-CS                      5.8573

  Clifty Creek              6        SB/B     PC         ESP-HS                      6.8745

  Newton                    2        SB       PC         ESP-CS                      6.9877

  Wyodak                    BW 91    SB       PC         ESP-CS                      7.0701

  Sherburne County          #3       SB       PC         BAGHOUSE                    7.5401
  Generating Plant                                                                   

  George Neal South         4        SB       PC         ESP-CS                      7.7269

  Rawhide                   101      SB       PC         BAGHOUSE                    7.7630

  Sam Seymour               3        SB       PC         ESP-CS            Y         8.6353

  GRDA                      2        SB/B     PC         ESP-CS                      8.6918

  Columbia                  1        SB       PC         ESP-HS                      10.3097

  Platte                    1        SB       PC         ESP-HS                      10.6121

  Kline Township Cogen      GEN1     WASTE B  FBC        BAGHOUSE                    0.0816
  Facility                                                                           

  Scrubgrass Generating     GEN1     WASTE B  FBC        BAGHOUSE                    0.0936
  Company L.P.                                                                       
  ------------------------- -------- -------- ---------- ----------------- --------- -----------