1 of 2 **Table 3 Wet Scrubber Description**  1. Control device description: Potline 1
- 4 Wet Scrubber 2. Stack or vent location of control device (use NAD83 and include six decimal places): ID No.: ___ 84

______ Latitude: 37.943250 __________L ongitude:
- 86.786596

____ 3. Desig n collection efficiency and outlet concentration (add rows as necessary ): Pollutant Collection Outlet Source of Efficiency * concentration Estimation * (if known) HF 90 Percent mg/dscf

_ 3

________ So2 50 Percent mg/dscf

__ 3

_______ Percent mg/dscf

_________ * 1 = Performance testing 2 = Engineering judgment 3 = Manufacturer specs. 4 = Title V permit application 5 = Other (specify ) _______________________ 4. Device t ype: Venturi Vertical packed bed Horizontal packed bed X Tray tower spray

chamber Other (specify

or describe): 5. Pressure mode of operation: X positive pressure negative pressure 6. Ty pical gas temperature: inlet 200 °F outlet 79 °F 7. Gas flow rate: 1,640,000 acfm (at scrubber outlet) 1,415,980 dscfm 8. Pressure drop across scrubber: 2
- 12 inches water column (in. H 2 O) 9. Liquid to gas ratio: gal/1,000 acf 10. Chemical usage rate (specify chemical and t ypical usage rate, if applicable) Chemical added Usage rate Units for usage rate Lime 100 Tons/week2 of 2

11. Id entify

each source served by

this control device (add rows as necessary ). Source ID No(s). Source description(s) EP (84) Equip 4200 Potline #1 CWPB3 EP (84) Equip 42 2 0 Potline #2 CWPB3 EP (84) Equip 42 3 0 Potline #3 CWPB3 EP (84) Equip 42 4 0 Potline #4 CWPB3 12. Indicate what operational parameters of the control device are monitored to ensure that the control device is operating properl y:

Volumetric flow rate X Fan amperage Pressure drop X Water flow rate Other (specify ):
. 13. What level of a monitored operational parameter triggers corrective action?

Volumetric flow rate (acfm) 170
- 210 Fan amperage (amps) Pressure drop (in. H 2 O) 3,000 Water flow rate (gpm) Other (specify ):
. 14. Additional comments and information:1 of 2 **Table 4**  **Combination Dry Alumina Scrubber/Bag House Description** 1. Control device description: Carbon Bake Scrubber 2. Stack or vent location of control device (use NAD83 and include six decimal places): ID No.: 41

_________ Latitude: 37.948694

__________ _ Longitude:
- 86.787524

_____ 3. Design collection efficiency and outlet concentration (add rows as necessary ): Pollutant Collection Outlet Source of efficiency * concentration Estimation * (if known) POM 90 Percent mg/dscf

____ 3

____ _ PM 90 Percent mg/dscf

____ 3

_____ HF 90 Percent mg/dscf

___ 3

______ * 1 = Performance testing 2 = Engineering judgment 3 = Manufacturer specs. 4 = Title V permit application 5 = Other (specify ) ______________

_________ 4. Scrubber device t ype:

__ X

___ Fluidized bed

___ X

__ Injection

___ X

__ Other (specify

or describe): _____ cooling tower

_____________________ 5. Bag cleaning method:

__ X

___ Pulse jet

_____ Reverse air

_____ Shaker

_____ Other (describe)

_______________ __________________________________ 6. Pressure mode of operation: positive pressure X negative pressure 7. Ty pical gas temperature: inlet to scrubber 254 °F outlet from bag house 185 °F 8. Gas flow rate: 174,150 acfm (at bag house outlet) 136,040 dscfm 9. Pressure drop: Across scrubber: Bed pressure 0.53 inches water column (in. H 2 O)

Across bag house: 8.0 inches water column (in. H 2 O) 10. Solid to gas ratio: ND lb/1,000 acf2 of 2

11. Alumina usage rate (differentiate between virgin and recycled alumina from potlines)

Ty pe of Alumina Added Usage rate Units for usage rate Virgin alumina 3475 Lbs/hr Recy cled alumina Other alumina (specify

__________

______) 12. Id entify

each emission source served b y this control device (add rows as necessary ). Source ID No(s). Description(s) EP (41) Anode Bake Furnaces 1,2 &3

13. Indicate what operational parameters of the control device are monitored to ensure t hat the control device is operating properl y: X Volumetric flow rate Fan amperage Pressure drop X Visible emissions opacity Other (specify ): Gas temp at cooling tower, Alumina Feed rate

. 14. What level of a monitored operational parameter triggers corrective action?

119,232 SCFM Volumetric flow rate (acfm) Fan amperage (amps) Pressure dr op (in. H 2 O) 20 Visible emissions opacity (%) Other (specify ): Gas Temp
- 170/
- 208 F Alumina Flow rate
- 3475 lbs/hr
. 15. Additional comments and informati on:1 of 2 **Table 5**  **Electrostatic Precipitator (ESP) Description** 1. Control device description: Potlines 1
- 4 ESP 2. Stack or vent location of each control device (use NAD83 and include six decimal places): ID No.: _ 84

________ Latitude: 37.943250

_____ Longitude:
- 86.786596

__________ 3. Design collection efficiency and outlet concentration (add rows as necessary ): Pollutant Collection Outlet Source of efficiency * concentration Estimation * (if known) PM 94.5 Percent mg/dscf

___ 3

______ Percent mg/dscf

_________ Percent mg/dscf

_________ * 1 = Performance testing 2 = Engineering judgment 3 = Manufacturer specs. 4 = Title V permit application 5 = Other (specify ) _______________________ 4. D evice t ype: X High
- voltage, single
- stage Lo w - voltage, two
- stage Wet Dry Other (specify

or describe): 5. Pressure mode of operation: positive pressure X negative pressure 6. Ty pical gas temperature: inlet 200 ° F o u t l e t ° F 7. Gas flow rate: 1,640,000 acfm (at ESP outlet) 1,415,980 dscfm 8. Collection plate surface area: _ 1800 per ESP (8 total) _____ ft 2 9. Secondary

power: _____________ kW 10. Id entify

each emission source served by this control device (add rows as necessary ). Source ID No(s). Description2 of 2

EP (84) Equip 4200 Potline #1 CWPB3 EP (84) Equip 4220 Potline #2 CWPB3 EP (84) Equip 4230 EP(84)Equip 4240 Potline #3 CWPB3 Potline #4 CWPB3 11. Indicate what operation al parameters of the control device are monitored to ensure that the control device is operating properl y: X Visible emissions Volumetric flow X Fan amperage opacity rate Secondary

power X Second ar y voltage X Other (specify ): Secondary current

. 12. What level of a monitored operational parameter triggers corrective action? 20 Visible emissions Volumetric flow 170
- 210 Fan amperage opacity (%) rate (acfm) (amps) Secondary

power 20
- 29 mV Secondary voltage (kW) (volts) 80
- 156 mA Other (specify ): Secondary Current

. 13. Additional comments and information:1 of 2 **Table 6**  **Combination Dry Coke Scrubber and Bag House Description**  1. Control device description: 2. Stack or vent location of each control device (use NAD83 and include si x decimal places): ID No.: _________ Latitude: _______________ Longitude: ________________ 3. Design collection efficiency and outlet concentration (add rows as necessary ): Pollutant Collection Outlet Source of efficiency * concentration Estimation * (i f known) Percent mg/dscf

_________ Percent mg/dscf

_________ Percent mg/dscf

_________ * 1 = Performance testing 2 = Engineering judgment 3 = Manufacturer specs. 4 = Ti tle V permit application 5 = Other (specify ) _______________________ 4. Scrubber device t ype:

_____ Fluidized bed

_____ Injection

_____ Other (specify

or describe): _________________________________________ 5. Bag cleaning method:

_____ Pulse jet

_____ Reverse air

_____ Shaker

_____ Other (describe)

_________________________________________________ 6. Pressure mode of operation: positive pressure negative pressure 7. Ty pical gas temperature: inlet ° F o u t l e t ° F 8. Gas flow rate: acfm (at bag house outlet) dscfm 9. Pressure drop: Across scrubber: inches water column (in. H 2 O)

Across bag house: inches wa ter column (in. H 2 O) 10. Solid to gas ratio: l b /1,000 a cf2 of 2

11. Dry coke usage rate:
12. Id entify

each emission source served b y this device (add rows as necessary ). Source ID No(s). Description(s)

13. Indicate what operational parameters of the control device are monitored to ensure that the control device is operating properl y:

_______ Volumetric flow rate

____________ Fan amperage

_______ Visible emissions opacity

____________ Pressure drop Other (specify ):
. 14. What level of a monitored operational parameter triggers corrective action?

_______ Volumetric flow rate (acfm)

____________ Fan amperage (amps)

_______ Visible emissions opacity (%)

____________ Pressure drop (in. H 2 O) Other (specify ):
. 15. Additional comments and information:1 of 2 **Table 7**  **Other Air Pollution Control Devices** 1. Control devic e description: Potline 1
- 4 Wet Scrubber Cy clone 2. Stack or vent location of each control device (use NAD83 and include six decimal places): ID No.: _ 84

________ Latitude: 37.943250

______ Longitude:
- 86.786596

_________ 3. Design collection efficiency and out let concentration (add rows as necessary ): Pollutant Collection Outlet Source of efficiency * concentration Estimation * (if known) PM 80 Percent mg/dscf

___ 3

______ Percent mg/dscf

_________ Percent mg/dscf

_________ * 1 = Performance testing 2 = Engineering judgment 3 = Manufacturer specs. 4 = Title V permit application 5 = Other (specify ) _______________________ 4. Pressure mode of operation: positive press ure X negative pressure 5. Ty pical gas temperature: inlet 65 °F outlet °F 6. Gas flow rate: 5000 acfm Specify location: _______________________________ D scfm 7. Id entify

eac h emission source served b y this control device (add rows as necessary ). Source ID No(s). Source description(s) EP (84) Equip 4200 Potline #1 CWPB3 EP (84) Equip 4220 Potline #2 CWPB3 EP (84) Equip 4230 Potline #3 CWPB3 EP (84) Equip 4240 Potline #4 CWPB3 8. Indicate what operational parameters of the control device are monitored to ensure that the control device is operating properl y:

Visible emissions opacity Volumetric flow rate Pressure drop Other (specify ):
.2 of 2

9. What level of a monitored operational parameter triggers corrective action?

Visible emissions opacity (%) Volumetric flow rate (acfm) Pressure drop (in. H 2 O) Other (specify ):
. 10. Additional comments and information: