1 2 3 4 9 10 11 12

Available Used UPL Run ID Avg Period Data Sets Data Sets lb Hg /MMBtu 1 30 87 87 1.11E-06 2 60 83 83 1.01E-06 3 90 77 77 9.13E-07 4 180 66 66 8.04E-07 5 360 23 23 7.60E-07 6 30 23 23 1.32E-06 7 60 23 23 1.13E-06 8 90 23 23 1.03E-06 9 180 23 23 9.17E-07 10 360 23 23 7.60E-07 0.00E+00 2.00E

- 07 4.00E

- 07 6.00E

- 07 8.00E

- 07 1.00E

- 06 1.20E

- 06 1.40E

- 06

0 1 2

UPL Values for Various Averaging Periods based on All Available Data lbs Hg/MMBtu

6.00E

- 07 8.00E

- 07 1.00E

- 06 1.20E

- 06 1.40E

- 06 1.60E

- 06 lbs Hg/MMBtu

0.00E+00 2.00E

- 07 4.00E

- 07 6.00E

- 07 8.00E

- 07 1.00E

- 06

0 1 2

UPL Values for Various Averaging Periods based on the same data set of 23 units.13 14 15 16 17 18

3 4 5 6 Values for Various Averaging Periods based on All Available Data

Days in Avgeraging Period

3 4 5 6 Values for Various Averaging Periods based on the same data set of 23 units.

Days in Avgeraging Perioda = run

sequence

fac_stack Max_MW **CEMS Hr Count for**  **Unit Minimum** 

**Surr. Stk Test**  **Max. 30**

**Day Avg/ Min Surr.**  **Stk Test Max. 60** 

**Day Avg/ Min Surr.**  **Stk Test Max. 90** 

**Day Avg/ Min Surr.**  **Stk Test Max. 120** 

**Day Avg/ Min Surr.**  **Stk Test Max. 150** 

**Day Avg/ Min Surr.**  **Stk Test Max. 180** 

**Day Avg/ Min Surr.**  **Stk Test Max. 210** 

**Day Avg/ Min Surr.**  **Stk Test Max. 240** 

**Day Avg/ Min Surr.**  **Stk Test Max. 270** 

**Day Avg/ Min Surr.**  **Stk Test Max. 300** 

**Day Avg/ Min Surr.**  **Stk Test**

1 130_C1 643 25,439 8.2E-09 114.4 8.2E-09 93 8.2E-09 78 68 62 8.2E-09 59 56 54 51 48 9 56224_STK1 241 11,691 5.1E-08 38.4 5.1E-08 34 5.1E-08 32 30 28 5.1E-08 28 27 26 25 24 11 130_C2 621 25,742 5.1E-08 29.2 5.1E-08 26 5.1E-08 25 24 24 5.1E-08 22 22 21 20 20 8 2451_Unit 4 Stack 548 8,697 3.5E-08 13.7 3.5E-08 12 3.5E-08 10 10 10 3.5E-08 9 8 8 9 9 39 4041_OCPP-S13 529 9,481 6.3E-07 8.0 6.3E-07 7 6.3E-07 7 7 7 6.3E-07 6 6 6 6 6 28 6165_STK1 460 8,273 3.3E-07 5.5 3.3E-07 5 3.3E-07 5 4 4 3.3E-07 4 4 4 4 4 53 4050_Stack - 5 429 7,313 1.5E-06 4.7 1.5E-06 4 1.5E-06 4 4 4 1.5E-06 4 4 4 4 4 61 6101_STK1 387 8,740 1.9E-06 8.2 1.9E-06 6 1.9E-06 5 4 4 1.9E-06 4 4 4 4 4 45 6170_PPPPS2 650 9,504 9.1E-07 4.0 9.1E-07 4 9.1E-07 4 4 4 9.1E-07 4 4 4 4 3 35 1606_STK1 159 13,401 6.4E-07 4.1 6.4E-07 4 6.4E-07 4 4 4 6.4E-07 4 3 3 3 3 43 1554_Stack 3 319 8,760 1.6E-06 3.5 1.6E-06 3 1.6E-06 3 3 3 1.6E-06 3 3 3 3 3 63 6002_Stack 2 730 9,040 2.0E-06 3.4 2.0E-06 3 2.0E-06 3 3 3 2.0E-06 3 3 3 3 3 71 3_Shared Stack 1 2 3 548 8,728 2.4E-06 3.2 2.4E-06 3 2.4E-06 3 3 3 2.4E-06 3 3 3 3 3 50 6170_PPPPS1 651 9,504 1.6E-06 3.5 1.6E-06 3 1.6E-06 3 3 3 1.6E-06 3 3 3 3 3 68 3181_Stack 4 307 10,945 2.3E-06 5.7 2.3E-06 4 2.3E-06 3 3 3 2.3E-06 3 3 3 3 2 59 6002_Stack 4 725 8,265 2.1E-06 3.2 2.1E-06 3 2.1E-06 3 3 3 2.1E-06 2 2 2 2 2 57 6761_S101 308 8,111 1.5E-06 2.6 1.5E-06 2 1.5E-06 2 2 2 1.5E-06 2 2 2 2 2 78 26_Shared Stack 1 2 543 12,081 6.4E-06 3.3 6.4E-06 3 6.4E-06 3 3 2 6.4E-06 2 2 2 2 2 70 6002_Stack 3 726 8,919 2.9E-06 2.3 2.9E-06 2 2.9E-06 2 2 2 2.9E-06 2 2 2 2 2 75 6002_Stack 1 720 9,096 4.0E-06 1.8 4.0E-06 2 4.0E-06 2 2 2 4.0E-06 2 2 2 2 2 86 7_Shared Stack 1 2 106 9,427 1.4E-05 1.9 1.4E-05 2 1.4E-05 2 2 2 1.4E-05 1 1 1 1 1 66 8_Shared Stack 8 9 10 1,078 8,393 2.3E-06 2.7 2.3E-06 2 2.3E-06 1 1 1 2.3E-06 1 1 1 1 1 73 4054_U1U2 CS Stack 232 7,588 2.6E-06 1.6 2.6E-06 1 2.6E-06 1 1 1 2.6E-06 1 1 1 1 1 2 6165_STK3 495 6,772 3 8069_Stk2 474 4,837 6 8069_Stk1 472 3,759 21 3_ESP (4A) Exit 377 3,090 19 1552_Stack 1 204 4,833 4 2451_Unit 2 Stack 377 3,615 10 2451_Unit 3 Stack 546 7,127 23 6257_Stack 3 909 7,487 20 1552_Stack 2 208 4,222 22 4162_STK 3 356 2,267 49 6193_Stack 2 373 7,240 15 703_Scrubber Stack (2) 773 4,522 18 4162_STK 1 174 3,791 13 3644_Stck 2 113 4,873 26 3406_SK001 1,098 2,509 14 1554_Stack 2 139 6,226 33 6194_2St 570 5,733a = run

sequence

fac_stack Max_MW **CEMS Hr Count for**  **Unit Minimum** 

**Surr. Stk Test**  **Max. 30**

**Day Avg/ Min Surr.**  **Stk Test Max. 60** 

**Day Avg/ Min Surr.**  **Stk Test Max. 90** 

**Day Avg/ Min Surr.**  **Stk Test Max. 120** 

**Day Avg/ Min Surr.**  **Stk Test Max. 150** 

**Day Avg/ Min Surr.**  **Stk Test Max. 180** 

**Day Avg/ Min Surr.**  **Stk Test Max. 210** 

**Day Avg/ Min Surr.**  **Stk Test Max. 240** 

**Day Avg/ Min Surr.**  **Stk Test Max. 270** 

**Day Avg/ Min Surr.**  **Stk Test Max. 300** 

**Day Avg/ Min Surr.**  **Stk Test**

12 2451_Unit 1 Stack 377 4,159 24 1378_SK001 662 2,021 7 3396_SK001 906 2,259 16 3644_Stck 1 75 4,745 32 6193_Stack 3 380 1,884 41 3845_FGDSSTACK2 726 4,961 5 6076_1STACK 352 6,770 17 1378_SK003 1,089 925 37 3403_SK002 556 5,427 29 47_SK001 736 2,002 34 1570_9B 28 709 52 4158_STK43 246 5,562 30 703_Scrubber Stack (3) 949 6,354 38 26_FGD Stack 5 905 5,700 46 4158_STK41 113 5,698 87 26_Shared Stack 3 4 540 5,108 80 10_Shared Stack 1 2 534 7,267 51 4050_ESP Outlet 4 307 6,518 31 4162_STK 2 231 3,558 25 6165_STK2 461 6,305 64 1048_Unit 2 Stack 224 6,245 48 1570_9A 28 803 62 8066_STK4 577 6,935 65 6076_4STACK 819 2,579 56 3845_FGDSSTACK1 732 4,219 55 4158_STK42 115 5,727 72 6194_1St 565 6,128 60 3_FGD Stack 5 773 2,025 58 4158_STK44 368 1,675 36 3399_SK001 1,309 1,436 44 6076_2STACK 338 8,144 74 8066_STK1 570 6,419 54 6076_3STACK 812 6,974 69 8066_STK3 570 6,749 84 8_Shared Stack 6 7 215 751 27 3403_SK001 489 8,048 67 8066_STK2 571 6,779 76 709_Shared Stack 3 4 1,027 7,794 77 1104_Stack - 1 216 7,021 42 2187_Stack1 166 7,451a = run

sequence

fac_stack Max_MW **CEMS Hr Count for**  **Unit Minimum** 

**Surr. Stk Test**  **Max. 30**

**Day Avg/ Min Surr.**  **Stk Test Max. 60** 

**Day Avg/ Min Surr.**  **Stk Test Max. 90** 

**Day Avg/ Min Surr.**  **Stk Test Max. 120** 

**Day Avg/ Min Surr.**  **Stk Test Max. 150** 

**Day Avg/ Min Surr.**  **Stk Test Max. 180** 

**Day Avg/ Min Surr.**  **Stk Test Max. 210** 

**Day Avg/ Min Surr.**  **Stk Test Max. 240** 

**Day Avg/ Min Surr.**  **Stk Test Max. 270** 

**Day Avg/ Min Surr.**  **Stk Test Max. 300** 

**Day Avg/ Min Surr.**  **Stk Test**

81 8023_Unit 2 Stack 596 6,835 82 1047_Unit 4 Stack 261 6,228 83 8023_Unit 1 Stack 595 6,979 79 6254_Stack-1 771 7,021 47 50_SK003 473 769 85 3178_Stack_2 189 1,717 40 50_SK001 344 779

1 2 3 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20**Max. 330**

**Day Avg/ Min Surr.**  **Stk Test Max. 360** 

**Day Avg/ Min Surr.**  **Stk Test Max** 

46 8.2E-09 45 9.3E-07 24 5.1E-08 23 2.0E-06 19 5.1E-08 19 1.5E-06 8 3.5E-08 8 4.8E-07 6 6.3E-07 6 5.0E-06 4 3.3E-07 4 1.8E-06 4 1.5E-06 4 3 1.9E-06 3 1.6E-05 3 9.1E-07 3 3.7E-06 3 6.4E-07 3 2.6E-06 3 1.6E-06 3 3 2.0E-06 3 3 2.4E-06 3 3 1.6E-06 3 2 2.3E-06 2 1.3E-05 2 2.1E-06 2 2 1.5E-06 2 4.0E-06 2 6.4E-06 2 2 2.9E-06 2 2 4.0E-06 1 1 1.4E-05 1 1 2.3E-06 1 6.4E-06 1 2.6E-06 1**Max. 330**

**Day Avg/ Min Surr.**  **Stk Test Max. 360** 

**Day Avg/ Min Surr.**  **Stk Test Max** **Max. 330**

**Day Avg/ Min Surr.**  **Stk Test Max. 360** 

**Day Avg/ Min Surr.**  **Stk Test Max** 

21 22 23 24 25 26 27 28 29 30 3160.0

80.0 100.0 120.0 140.0 y= (30 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) Figure A

- 2: Relationship Between Minimum Single Point Stack Tests and 30 Day Rolling Averages Based on Hg CEMS Data for 23



## 6hr Surrogate: **3rd Percentile (0.03)**  **30 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 1.32 E**

**- 06 lbs Hg/MMBtu**  

# Control Data Set

- Same 23 Units Used in 360 Day Average Analysis

y = 0.0034x

- 0.528 R2 = 0.8326

0.0 20.0 40.0 60.0

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 3.0336E-07 3.0336E-07 3.9836E-07**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  3.9836E-07 4.2327E-07 4.2327E-07 4.5961E-07**Seward AES Greenidge** 

**3130 2527**  **2 6**  4.5961E-07 4.6336E-07**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 4.8971E-07 5.1693E-07 5.2855E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 5.8003E-07y = 0.003x

- 0.526 R2 = 0.845 50 60 70 80 90 100 y= (60 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) The Relationship Between Minimum Single Point Stack Tests and 60 Day Rolling Averages Based on Hg CEMS Data for 23 Units



## 6hr Surrogate: **3rd Percentile (0.03)**  **60 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 1.01 E**

**- 06 lbs Hg/MMBtu** 

R2 = 0.845

0 10 20 30 40

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 2.5730E-07 2.5730E-07 3.3827E-07**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  3.3827E-07 3.5952E-07 3.5952E-07 3.9051E-07**Seward AES Greenidge** 

**3130 2527**  **2 6**  3.9051E-07 3.9371E-07**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 4.1620E-07 4.3944E-07 4.4936E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 4.9332E-0740

50 60 70 80 90 y= (90 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) The Relationship Between Minimum Single Point Stack Tests and 90 Day Rolling Averages Based on Hg CEMS Data for 23 Units



## 6hr Surrogate: **3rd Percentile (0.03)**  **90 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 0.91 E**

**- 06 lbs Hg/MMBtu** 

y = 0.0033x

- 0.515 R2 = 0.8444

0 10 20 30

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 2.2775E-07 2.2775E-07 3.0132E-07**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  3.0132E-07 3.2071E-07 3.2071E-07 3.4903E-07**Seward AES Greenidge** 

**3130 2527**  **2 6**  3.4903E-07 3.5195E-07**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 3.7253E-07 3.9383E-07 4.0293E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 4.4331E-0730

40 50 60 70 y= (180 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) The Relationship Between Minimum Single Point Stack Tests and 180 Day Rolling Averages Based on Hg CEMS Data for 23 Units



## 6hr Surrogate: **3rd Percentile (0.03)**  **180 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 0.91 E**

**- 06 lbs Hg/MMBtu** 

y = 0.0036x

- 0.503 R2 = 0.8572

0 10 20

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 1.9602E-07 1.9602E-07 2.6114E-07**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  2.6114E-07 2.7837E-07 2.7837E-07 3.0359E-07**Seward AES Greenidge** 

**3130 2527**  **2 6**  3.0359E-07 3.0619E-07**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 3.2455E-07 3.4358E-07 3.5172E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 3.8788E-0725

30 35 40 45 50 y= (360 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) The Relationship Between Minimum Single Point Stack Tests and 360 Day Rolling Averages Based on Hg CEMS Data for 23 Units



## 6hr Surrogate: **3rd Percentile (0.03)**  **360 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 0.76 E**

**- 06 lbs Hg/MMBtu** 

y = 0.0044x

- 0.48 R2 = 0.8607

0 5 10 15 20

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 1.5210E-07 1.5210E-07 2.0533E-07**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  2.0533E-07 2.1953E-07 2.1953E-07 2.4038E-07**Seward AES Greenidge** 

**3130 2527**  **2 6**  2.4038E-07 2.4254E-07**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 2.5778E-07 2.7361E-07 2.8039E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 3.1063E-07**Spruance Genco, LLC Spruance Genco, LLC**  **Spruance Genco, LLC 54081**  **54081 54081**  **2B 2A**  **3A** 2.6333E-09 2.6333E-09 4.6900E-09**Spruance Genco, LLC Logan Generating Plant**  **Nucla Seward**  **54081 10043**  **527 3130**  **3B B01**  **1 1**  4.6900E-09 5.3333E-09 5.3333E-09 6.3500E-09 9.8533E-09 5.5333E-08 6.0000E-09 3.8000E-08**Seward AES Greenidge** 

**3130 2527**  **2 6**  6.3500E-09 6.4602E-09 5.5333E-08 7.6771E-08 3.8000E-08**Roanoke Valley I AES Westover, LLC**  **INDIANTOWN COGENERATIO**  **N L.P. 54035**  **2526 50976**  **BLR1 13**  **AABO1** 7.2633E-09 8.1456E-09 8.5384E-09 5.4900E-07**Northampton Generating**

**Company, L.P. 50888**  **BLR1** 1.0397E-08 1.2872E-0750

60 70 80 90 100 y= (30 Day Rolling Avg)/(6hr CEMS Surrogate for Stack Test) The Relationship Between Minimum Single Point Stack Tests and 30 Day Rolling Averages Based on Hg CEMS Data for 87 Units



## 6hr Surrogate: **3rd Percentile (0.03)**  **30 Day Rolling Avg: 99th Percentile (0.99)**  **UPL = 1.1 E**

**- 06 lbs Hg/MMBtu** 



## y = 0.0033x

- 0.514 

## R2 = 0.8031

0 10 20 30 40

0.0E+00 2.0E

- 06 4.0E

- 06 6.0E

- 06 8.0E

- 06 1.0E

- 05 1.2E

- 05 1.4E

- 05 1.6E

- 05 x= Surrogate Stack Test (lbs Hg/MMBtu)