Appendix D: Summary of Statistical, Fuel, and RDL Variability for Existing Sources

Measurement Detection 

Level Variability

Average Emissions 

of Top 12%

Maximum Best 

Perf. Run Emission 

Value

Total Number of 

Test Runs for Top 

12% (ET + FA data)

Is UPL Based on 

Single Unit with 

Multiple Tests?

UPL

99% Confidence 

Level

Test on Statistical 

Variability (UPL/Max 

best perf. test run ) 3x RDL

Max Ratio (all data 

outliers removed, 

subcat-specific)

Avg. Ratio for Ratios 

>1 (data outliers 

removed, subcatspecific)

99% UPL * Max Ratio 

(all data outliers 

removed, fuel-specific)

99% UPL * Avg Ratio 

>1 (all data outliers 

removed, fuel-specific)

Solid Fuel 5.7E-06 4.05E-07 1.88E-06 172 NO 3.41E-06 1.8 7.18E-07 11.46 1.67 5.69E-06

Liquid 2.0E-06 1.28E-07 8.21E-07 877 NO 1.89E-06 2.3 4.6E-07 1.04 1.96E-06

Process Gas 7.9E-06 6.20E-06 6.88E-06 3 NO 7.85E-06 1.1 4.35E-07 No Data No Data No Data No Data

Solid Fuel 2.2E-02 2.07E-03 5.15E-02 173 NO 1.15E-02 0.2 1.7E-04 5.38 1.91 2.20E-02

Liquid 1.1E-03 4.19E-04 8.34E-04 32 NO 4.29E-04 0.5 1.2E-04 2.46 1.05E-03

Process Gas 1.7E-03 1.23E-03 1.40E-03 3 NO 1.67E-03 1.2 6.3E-05 No Data No Data No Data

Biomass

Dutch Oven/

Pile Burner 2.0E-03 2.30E-04 1.01E-03 13 NO 1.94E-03 1.9 2.07E-05 No Data No Data No Data No Data

FB 1.2E-03 1.01E-04 5.56E-04 24 NO 1.19E-03 2.1 6.56E-06 No Data No Data No Data No Data

Fuel Cell 5.8E-03 5.40E-04 3.12E-03 17 NO 5.71E-03 1.8 1.35E-05 No Data No Data No Data No Data

Suspension Burner 6.5E-03 4.74E-03 5.25E-03 3 NO 6.42E-03 1.2 7.72E-05 No Data No Data No Data No Data

Suspension/Grate 4.5E-04 2.07E-04 3.65E-04 18 NO 4.49E-04 1.2 N/A No Data No Data No Data No Data

Wet Biomass Stoker 2.4E-04 4.90E-05 2.71E-04 24 NO 2.35E-04 0.9 1.12E-05 No Data No Data No Data No Data

Dry Biomass Stoker 4.0E-03 2.90E-03 3.19E-03 3 NO 3.97E-03 1.2 N/A No Data No Data No Data No Data

Coal 5.30E-05 1.90E-05 6.54E-05 61 NO 4.61E-05 0.7 9.26E-06 1.14 5.25E-05

FB

PC

Stoker/Other

Liquid

Heavy Liquid 2.0E-04 1.04E-04 2.71E-04 10 NO 1.76E-04 0.6 9.46E-06 1.13 1.99E-04

Light Liquid 6.2E-05 1.91E-04 2.87E-04 46 NO 6.17E-05 0.2 1.10E-05 No Data No Data

Non-Continental (only a single 

sample provided as part of the 

2012 comments)

8.6E-04 8.52E-04 8.52E-04 8 NO 8.52E-04 1.0 N/A No Data No Data

Process Gas 2.1E-04 6.74E-05 9.14E-05 2 NO 2.06E-04 2.3 3.41E-05 No Data No Data

Biomass

Dutch Oven/

Pile Burner 1.8E-01 2.23E-02 2.30E-01 30 NO 1.79E-01 0.8 3.15E-03

FB 1.1E-01 1.77E-02 7.20E-02 24 NO 1.04E-01 1.4 1.77E-03

Fuel Cell 2.0E-02 6.37E-03 2.43E-02 45 NO 1.93E-02 0.8 4.90E-03

Suspension Burner 5.1E-02 2.23E-02 3.30E-02 3 NO 5.06E-02 1.5 6.36E-03

Suspension/Grate 4.4E-01 6.52E-02 2.69E-01 158 NO 4.37E-01 1.6 5.67E-03

Wet Biomass Stoker 3.4E-02 9.15E-03 7.10E-02 117 NO 3.38E-02 0.5 5.73E-03

Dry Biomass Stoker 3.2E-01 2.13E-01 2.46E-01 3 NO 3.14E-01 1.3 2.78E-03

Coal 3.90E-02 8.55E-03 6.40E-02 269 NO 3.84E-02 0.6 2.77E-03

FB 3.30E-03 1.04E-03 1.58E-03 12 NO 3.23E-03 2.04 2.55E-03

FB Burning Coal Refuse 3.90E-02 2.00E-02 2.70E-02 6 NO 3.87E-02 1.44 2.55E-03

PC 5.00E-02 1.02E-02 2.70E-02 6 NO 4.97E-02 1.84 2.78E-03

Stoker/Other 2.80E-02 5.57E-03 2.70E-02 6 NO 2.77E-02 1.03 2.89E-03

Liquid

Heavy Liquid 6.2E-02 1.22E-02 2.18E-02 12 NO 6.15E-02 2.8 2.4E-03

Light Liquid 7.9E-03 2.68E-03 5.02E-03 24 NO 7.82E-03 1.6 1.6E-03

Non-Continental 2.7E-01 4.14E-02 7.21E-02 21 NO 2.62E-01 3.6 4.7E-03

Process Gas 6.7E-03 6.10E-03 6.30E-03 3 NO 6.67E-03 1.1 1.0E-03

Fuel Variability

TSM (lb/mmBtu)

PM (lb/mmBtu)

CO (ppm @ 3% O2)

Statistical Variability

Hg (lb/mmBtu)

HCl (lb/mmBtu)

Subcategory

MACT Floor 

(Rounded to two 

Sig Figs)

Emissions Data Characteristics
Appendix D: Summary of Statistical, Fuel, and RDL Variability for Existing Sources

Measurement Detection 

Level Variability

Average Emissions 

of Top 12%

Maximum Best 

Perf. Run Emission 

Value

Total Number of 

Test Runs for Top 

12% (ET + FA data)

Is UPL Based on 

Single Unit with 

Multiple Tests?

UPL

99% Confidence 

Level

Test on Statistical 

Variability (UPL/Max 

best perf. test run ) 3x RDL

Max Ratio (all data 

outliers removed, 

subcat-specific)

Avg. Ratio for Ratios 

>1 (data outliers 

removed, subcatspecific)

99% UPL * Max Ratio 

(all data outliers 

removed, fuel-specific)

99% UPL * Avg Ratio 

>1 (all data outliers 

removed, fuel-specific)

Statistical Variability Fuel Variability

Hg (lb/mmBtu)

Subcategory

MACT Floor 

(Rounded to two 

Sig Figs)

Emissions Data Characteristics

Biomass

Dutch Oven/

Pile Burner 770 356.44 830.68 48 NO 765.63 0.9 N/A

FB 470 115.18 347.91 15 NO 465.27 1.3 N/A

Fuel Cell 1,100 376.19 1,852.98 42 NO 1,087.71 0.6 N/A

Suspension Burner 2,400 488.45 2,342.18 12 YES 16,983.53 7.3 N/A

Suspension/Grate 2,800 956.24 6,414.32 136 NO 2,739.12 0.4 N/A

Wet Biomass Stoker 1,500 373.65 1,649.60 70 NO 1,476.17 0.9 N/A

Dry Biomass Stoker 460 268.26 311.35 3 NO 457.47 1.5 N/A

Coal

FB 49 15.97 23.33 6 NO 48.01 2.1 N/A

FB Burning Coal Refuse 140 104.30 114.09 3 NO 133.14 1.2 N/A

PC 62 19.54 73.42 21 NO 61.52 0.8 N/A

Stoker/Other 160 45.31 106.83 33 NO 155.15 1.5 N/A

Liquid

Heavy Liquid 12 6.43 9.66 8 NO 11.69 1.2 N/A

Light Liquid 6 2.41 5.00 20 NO 5.70 1.1 N/A

Non-Continental 32 16.81 26.71 21 NO 31.95 1.2 N/A

Process Gas 5 2.42 3.29 3 NO 4.54 1.4 N/A