FORM A-1

PARENT COMPANY INFORMATION

I. Parent Company / Legal Corporate Owner Information

 1. Legal Parent Company / Legal Corporate Name USG Corporation/ USG Interiors, Inc. 

 2. Address 550 W Adams St 

 3. City Chicago

 4. State IL

 5. Zip Code 60661

 6. County Cook

 7. Size of Company (approximate number of employees including all 

subsidiaries, branches, and related establishments owned):

More than 10,000 employees worldwide 
FORM A-2

FACILITY INFORMATION

II. Facility Information

 Facility Name USG Interiors Walworth Plant 

 Facility Address

 Street 208 Adeline Street

 City Walworth

 State WI

 Zip Code 53184

 County Walworth County

 Facility Coordinates

 Latitude (decimal degrees, six decimal places) 42.53621

 Longitude (decimal degrees, six decimal places) -88.60172

 Specific location represented (e.g., front door of main building, 

centroid of property, etc.) Unknown, EPA Envirofacts

 Number of employees attached to the mineral wool production 

facility: 15 Production plus 10 support personnel 

 Design capacity of the plant (tons/yr) CBI

 Type(s) of process(es) (rotary spin, flame attenuation) at this plant cupola

 Operation schedule

 hrs/day 24

 days/yr 365

 Identify what state and local air pollution rules and regulations, 

including permit requirements, your plant is subject to. (Please 

provide copies of permit(s) and permit IDs) See attached Air Emission Permit (Title V) No. 265006830-P01.

III. Technical Contact

 Name John Bolden

 Technical Contact Title Environmental Services Senior Manager

 Telephone 312-436-5587
 Facsimile (Fax)

 Email jbolden@usg.com

IV. Other

 Is the facility a major source of HAP? No

 

 If "No", did the facility take a limit of its potential HAP emissions 

to avoid classification as a major source? Yes

 Does the facility manufacture other products in addition to 

mineral wool? Yes

 If "Yes", list the other products manufactured at the facility. Ceiling Tile

 Are there any HAP emissions associated with any co-located 

facilities? List unit operations, e.g., boiler, and pollutant/emissions

Boiler (B10), Tile Dryers (P32 and P36), Curing Ovens (P34 and P38). Minimal 

HAPs emissions from fuel combustion (natural gas or propane).
FORM A-2

FACILITY INFORMATION

II. Facility Information

 Facility Name

 Facility Address

 Street

 City

 State

 Zip Code

 County

 Facility Coordinates

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Specific location represented (e.g., front door of main building, 

centroid of property, etc.)

 Number of employees attached to the mineral wool production 

facility:

 Design capacity of the plant (tons/yr)

 Type(s) of process(es) (rotary spin, flame attenuation) at this plant

 Operation schedule

 hrs/day

 days/yr

 Identify what state and local air pollution rules and regulations, 

including permit requirements, your plant is subject to. (Please 

provide copies of permit(s) and permit IDs)

III. Technical Contact

 Name

 Technical Contact Title

 Telephone

USG Interiors Red Wing Plant 

27384 Highway 61 Blvd

Red Wing

MN

55066

Goodhue County

44.554932

-92.473599

Unknown, EPA Envirofacts

40

CBI

cupola

At full capacity 24

365

See attached Air Emission Permit (Title V) No.04900007-003.

John Bolden

Environmental Services Senior Manager

312-436-5587
 Facsimile (Fax)

 Email

IV. Other

 Is the facility a major source of HAP?

 

 If "No", did the facility take a limit of its potential HAP emissions 

to avoid classification as a major source?

 Does the facility manufacture other products in addition to 

mineral wool?

 If "Yes", list the other products manufactured at the facility.

 Are there any HAP emissions associated with any co-located 

facilities? List unit operations, e.g., boiler, and pollutant/emissions

jbolden@usg.com

No

Yes

No

NA

Boiler (EU 005). Minimal HAPs emissions from fuel combustion (natural 

gas).
FORM A-2

FACILITY INFORMATION

II. Facility Information

 Facility Name

 Facility Address

 Street

 City

 State

 Zip Code

 County

 Facility Coordinates

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Specific location represented (e.g., front door of main building, 

centroid of property, etc.)

 Number of employees attached to the mineral wool production 

facility:

 Design capacity of the plant (tons/yr)

 Type(s) of process(es) (rotary spin, flame attenuation) at this plant

 Operation schedule

 hrs/day

 days/yr

 Identify what state and local air pollution rules and regulations, 

including permit requirements, your plant is subject to. (Please 

provide copies of permit(s) and permit IDs)

III. Technical Contact

 Name

 Technical Contact Title

 Telephone

At full capacity
 Facsimile (Fax)

 Email

IV. Other

 Is the facility a major source of HAP?

 

 If "No", did the facility take a limit of its potential HAP emissions 

to avoid classification as a major source?

 Does the facility manufacture other products in addition to 

mineral wool?

 If "Yes", list the other products manufactured at the facility.

 Are there any HAP emissions associated with any co-located 

facilities? List unit operations, e.g., boiler, and pollutant/emissions
FORM B-1

PLANT OPERATIONS

I. Overview of Process Operations

Number of process lines. Include lines that are currently

operational or that are temporarily shutdown. (Do not 

include lines permanently shutdown).

Walworth #1, Red Wing #1 

and Red Wing #2

For each process line: Process Line 1 Process Line 2 Process Line 3

Process line identification name or numbers Walworth #1 Red Wing #1 Red Wing #2

Type of process line (e.g., Fiberization method) Mineral Wool Production Mineral Wool Production Mineral Wool Production

Maximum annual production rate (tons/yr) CBI CBI CBI

Age of process line (yrs)

Cupola - Plant purchased in 

1959 (51 yrs). Title V lists 

construction/ modfication 

date as 1969. Cupola - 1973 (37 yrs) Cupola - 1979 (31yrs)

Remaining economic life of process line (yrs)

NA, Continued maintenance 

can provide indefinite life for 

this equipment.

NA, Continued 

maintenance can provide 

indefinite life for this 

equipment.

NA, Continued maintenance 

can provide indefinite life for 

this equipment.

List of products produced and most recent annual 

production (tons/yr; specify year) for each product CBI CBI CBI

Please attach detailed schematics of each process line Attachment (CBI) Attachment (CBI) Attachment (CBI)
FORM B-2

PROCESS OPERATIONS

II. Raw Material Handling and Storage

 Cupola charge preparation

 Raw materials and proportions by wt (%) Walworth - Coke (CBI) and Minerals (CBI) 

Red Wing #1 - Coke (CBI) and Minerals (CBI) 

Red Wing #2 - Coke (CBI) and Minerals (CBI)

 Method(s) of conveying each raw material to cupola

Mechanical (See Confidential Process Line Diagram requested on 

Form B-1)

 Binder and Additives USG Interiors does not use binders at either Plant.

 List each raw material, including premixed materials, in 

the binder formulation and its proportion by wt (%) NA

 List steps in preparing binder, including storage 

temperature (°F) and holding time (hrs) NA

 Total yearly consumption of binder, excluding water, 

(gal/yr) NA

 Cost of binder, excluding water, ($/gal) for most recent 

year (specify year) NA

 Are binder storage and mixing tanks vented to 

outside/inside? NA

 Method of treating vent air from storage and mix tanks NA

 Emission control during liquid raw material transfer from 

vehicles to storage tanks. NA

 Describe future source reduction plans and schedules to 

reformulate binders; List each constituent, proportions wt 

(%), cost ($/gal) for reformulation NA
FORM B-3

PROCESS OPERATIONS

III. Cupola/furnace

Walworth #1 Red Wing #1 Red Wing #2

 For each cupola: Cupola 1 Cupola 2 Cupola 3

 Process unit identification name/number P30 EU001 EU002

 Process line(s) served (identification name/number) Mineral Wool Mineral Wool Line 1 Mineral Wool Line 2

 Latitude (decimal degrees, six decimal places) 42.53621 44.554932 44.554932

 Longitude (decimal degrees, six decimal places) -88.60172 -92.473599 -92.473599

 Stack or vent height (units) 68.5 feet 180 feet

See RW #1 (one stack 

for both cupolas)

 Stack or vent diameter (units) 3 feet 2.6 feet

See RW #1 (one stack 

for both cupolas)

 Manufacturer and model Original Original Original

 Date of original installation

Plant purchased in 

1959. Title V lists 

construction/ 

modfication date as 

1969. 1973 1979

 Estimate of remaining lifetime (yrs)

N/A Continued 

maintenance can 

make it an indefinite 

life.

N/A Continued 

maintenance can 

make it an indefinite 

life.

N/A Continued 

maintenance can 

make it an indefinite 

life.

 Major rebuilds:
 What constitutes a major rebuild

The industry is not 

familiar with the term 

“major rebuild.” 

Federal and state 

regulators have 

agreed that a furnace, 

cupola, or melter 

refractory rebricking or 

lining replacement is 

properly categorized 

as routine 

maintenance, repair, 

or replacement 

(“RMRR”), which 

covers a wide variety

of activities.

The industry is not 

familiar with the term 

“major rebuild.” 

Federal and state 

regulators have 

agreed that a furnace, 

cupola, or melter 

refractory rebricking 

or lining replacement 

is properly

categorized as routine 

maintenance, repair, 

or replacement 

(“RMRR”), which 

covers a wide variety

of activities.

The industry is not 

familiar with the term 

“major rebuild.” 

Federal and state 

regulators have 

agreed that a furnace, 

cupola, or melter 

refractory rebricking or 

lining replacement is 

properly categorized 

as routine 

maintenance, repair, 

or replacement 

(“RMRR”), which 

covers a wide variety

of activities.

 Frequency of a major rebuild NA NA NA

 Cost of typical major rebuild NA NA NA

 Date of last major rebuild NA NA NA

 Purpose of last major rebuild NA NA NA

 Increase or decrease in emissions NA NA NA

 Fuel type: coke, electric, gas, or oil Coke, natural gas Coke, natural gas Coke, natural gas

 Fuel consumption rate (KW/ton of melt or Btu/ton of melt) CBI CBI CBI

 Design production rate (tons/day) CBI CBI CBI

 Actual glass pull rate (tons/day) CBI CBI CBI

 Exhaust air flow rate (acfm @ °F) Unknown Unknown Unknown

 Temperature (°F) of melt as it exits the cupola 2800 deg F 2400-2700 deg F 2400-2700 deg F

 Is oxygen enrichment used to supplement combustion air

Not used during 

normal operations Yes Yes

 Quantity of oxygen supplied for enrichment (cu. Ft. O2/ton 

coke) N/A CBI CBI
 Nature and frequency of routine/preventive maintenance 

procedures

Routine inspections 

including: Inspect for 

leaks and repair - 

monthly; Inspection of 

water jacket - 

quarterly; Repair 

cracks and dye check.

Inspect for leaks and 

repair - monthly; 

Inspection of water 

jacket - quarterly; 

Repair cracks, dye 

check, and hydro - 

annually;

Inspect for leaks and 

repair - monthly; 

Inspection of water 

jacket - quarterly; 

Repair cracks, dye 

check, and hydro - 

annually;

 Describe process modification(s) since 1999 that reduce 

emissions

In 2003 installed new 

style of dust collector 

bags to reduce PM 

emissions. 

In 1999 the plant 

installed thermal 

oxidizer elevating 

exhaust temperatures 

to meet a minimum of 

1400 degrees F. In 

2005 the plant 

replaced the existing 

fabric filter.In 2007 the 

plant repaired leaks in 

duct work between 

cupola and baghouse 

reducing the amount 

of excess air which 

required the Plant to 

burn less natural gas. 

In 1999 the plant 

installed thermal 

oxidizer elevating 

exhaust temperatures 

to meet a minimum of 

1400 degrees F. In 

2005 the plant 

replaced the existing 

fabric filter.In 2007 the 

plant repaired leaks in 

duct work between 

cupola and baghouse 

reducing the amount 

of excess air which 

required the Plant to 

burn less natural gas. 

 Describe future source reduction plans and schedules None planned None planned None planned
FORM B-4

PROCESS OPERATIONS

NA - USG Interiors lines 

are unbonded so no HAPs 

are created.

IV. Fiberization

 For each fiberization operation: Fiberization Operation 1 Fiberization Operation 2 Fiberization Operation 3

 Process unit identification name/number

 Process line(s) served (identification name/number)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Number of fiber forming devices (spinners) per line

 Method of attenuation fiber (air, centrifical force, or both)

 Major rebuilds:

 What constitutes a major rebuild

 Frequency of a major rebuild

 Cost of typical major rebuild

 Date of last major rebuild

 Purpose of last major rebuild

 Increase or decrease in emissions

 If forming section is modular, i.e., more than one forming 

and collection area per line, indicate the number of modules and 

air plenums.

 Presence of water overspray and application range (gpm)

 Binder applied and application rate (gpm)

 Other material applied (annealing oil or oil/water emulsion) 

and application rate (gpm)

 Temperature of binder when applied to the fibers (°F)

 Forming air flow rate (acfm @ °F)

 Percent of forming air recirculated and percent exhausted

 Nature and frequency of routine/preventive maintenance 

procedures

 Describe process modification(s) since 1999 that reduce 

emissions

 Describe future source reduction plans and schedules
 Fiberization method (e.g., Downey process or Youger/Powell 

process)

 Number of rotors

 Configuration of rotor(s)

 Amount of material that remains non-fiberized shot

 Exhaust air flow rate (acfm @ °F)
FORM B-5

PROCESS OPERATIONS

NA - USG Interiors lines are 

unbonded so no HAPs are 

created.

V. Fiber Collection

 For each fiber collection operation: Fiber Collection Operation 1 Fiber Collection Operation 2 Fiber Collection Operation 3

 Process unit identification name/number

 Process line(s) served (identification name/number)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Method of fiber collection from fiberization

 Manufacturer and model of collection chamber

 Date of original installation

 Major rebuilds:

 What constitutes a major rebuild

 Frequency of a major rebuild

 Cost of typical major rebuild

 Date of last major rebuild

 Purpose of last major rebuild

 Increase or decrease in emissions

 Air flow rate (acfm @ °F) in pneumatic fiber conveying

 Exhaust air flow rate (acfm @ °F)

 Residence time of product (mins) (time spent in 

collection device)

 Method of evenly distributing fibers onto conveyor belt

 Formed mat thickness (in.)

 Nature and frequency of routine/preventive 

maintenance procedures

 Describe process modification(s) since 1999 that 

reduce emissions

 Describe future source reduction plans and schedules
FORM B-6

PROCESS OPERATIONS

NA - No Curing at USG 

Interiors. 

VI. Curing 

 For each curing oven: Curing Oven 1 Curing Oven 2 Curing Oven 3

 Process unit identification name/number

 Process line(s) served (identification name/number)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Method of curing 

 Manufacturer and model

 Date of original installation

 Major rebuilds:

 What constitutes a major rebuild

 Frequency of a major rebuild

 Cost of typical major rebuild

 Date of last major rebuild

 Purpose of last major rebuild

 Increase or decrease in emissions

 Fuel type: electric, gas, or oil 

 Fuel consumption rate (KW/hr or BTU/hr)

 Curing temperature (°F)

 Moisture content wt (%) of formed mat: 

 inlet

 outlet

 Exhaust air flow rate (acfm @ °F) from curing

 Residence time of product (mins)

 Binder content of cured product (LOI)

 Nature and frequency of routine/preventive maintenance 

procedures

 Describe process modification(s) since 1999 that reduce 

emissions

 Describe future source reduction plans and schedules
FORM B-7

PROCESS OPERATIONS

NA - No Cooling at USG 

Interiors.

VII. Cooling

 For each cooling operation: Cooling Operation 1 Cooling Operation 2 Cooling Operation 3

 Process unit identification name/number

 Process line(s) served (identification name/number)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Cooling air flow rate (acfm @ °F) 

 Percentage of cooling air recirculated (if any)

 Cooling air temperature (°F)

 Exhaust air flow rate (acfm @ °F) 

 Nature and frequency of routine/preventive maintenance 

procedures

 Describe process modification(s) since 1999 that reduce 

emissions

 Describe future source reduction plans and schedules
FORM B-8

PROCESS OPERATIONS

VIII. Pollution Prevention

Please describe any work practices, pollution prevention techniques, 

and control strategies evaluated and/or implemented at each process 

unit at your facility (e.g., binder reformulation, alternative fuels usage, 

etc.) to reduce emissions of PM, CO, and HAPs you identified in Form 

E. You must specify the year in which the facility implemented the 

practice/technique and identify the emission reductions (if measured) 

from these practices/techniques.

If process modifications were made and records of those 

modifications still exist, companies will provide them to EPA. It is 

worthwhile noting that the products manufactured at this facility

are used to make buildings more energy efficient. A thermallyefficient building reduces the energy required to maintain a 

comfortable indoor environment. A decrease in energy

consumption conserves non-renewable fuel supplies and 

reduces air pollution and greenhouse gas emissions such as 

carbon dioxide (CO2) and nitrogen oxide (NOx). According to a 

Harvard University School of Public Health study, thermal 

insulation’s reduction of emissions greatly improves public health.

Walworth Cupola

C11 Thermal Oxidizer, 1986

Thermal oxidation of carbon monoxide (99.70%) and hydrogen 

sulfide (99.90%)

C12 Fabric Filter, 1993 Fabric filtration of particulate matter (0.01 gr/dscf)

Red Wing Cupola #1 and #2

Afterburner, 1999 Controls CO, 100% Capture Efficiency, 99% Collection Efficiency

North (Cupola #2) Baghouse, 2002

Controls Metal HAPs, PM10 and PM. Capture Efficiency is 100% 

for all Pollutants. Collection Efficiency for Metal HAPs is 88%. 

Collection Efficiency for PM10 and PM is 99%.

South (Cupola #1) Baghouse, 2005

Controls Metal HAPs, PM10 and PM. Capture Efficiency is 100% 

for all Pollutants. Collection Efficiency for Metal HAPs is 88%. 

Collection Efficiency for PM10 and PM is 99%.
FORM C-1

AIR POLLUTION CONTROL

I. Electrostatic Precipitator (ESP) - NA

 For each ESP: ESP 1 ESP 2 ESP 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Manufacturer and model

 Date of original installation

 Number of collection plates and configuration

 Gas flow rate to ESP (acfm @ °F)

 Inlet gas temperature (°F)

 Outlet gas temperature (°F)

 Inlet grain loading (gr/dscf)

 Outlet grain loading (gr/dscf)

 Average stack opacity (%)

 Pressure drop across ESP (in. H

2O gauge)

 Plate area (ft

2

)

 Vendor guarantee on ESP efficiency (attach copy)

 Method of plate cleaning and frequency

 Flow rate of plate wash water to ESP (gpm), if applicable

 Temperature of plate wash water to ESP (°F), if applicable

 Source of plate wash water used for cleaning, if applicable

 Concentration (mg/l) of dissolved and suspended solids in plate 

wash water, if applicable

 Conditioning agents used and amounts (in gpm or lbs/hr), if 

applicable

 Amount of wastewater generated (gpd), if applicable

 Amount of wastewater recycled (gpd), if applicable

 Amount of wastewater disposed of (gpd), if applicable

 Method of wastewater disposal, if applicable

 Quantity of solid waste collected (lbs/yr)

 Quantity of solid waste recycled (lbs/yr)

 Quantity of solid waste disposed of (lbs/yr)
 Method of solid waste disposal

 Nature and frequency of routine/preventive maintenance 

procedures

 Problems experienced with control device within the last five 

years; how were problems solved?

 Continuous monitoring method(s) used to monitor ESP 

performance, including parameters monitored

 Describe any plans to replace or upgrade ESP
FORM C-2

AIR POLLUTION CONTROL

II. Scrubber - NA

 For each scrubber: Scrubber 1 Scrubber 2 Scrubber 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Manufacturer and model

 Date of original installation

 Type (e.g., venturi, orifice)

 Gas flow rate to scrubber (acfm @ °F)

 Inlet gas temperature (°F)

 Outlet gas temperature (°F)

 Inlet grain loading (gr/dscf)

 Outlet grain loading (gr/dscf)

 Average stack opacity (%)

 Water flow rate to scrubber (gpm)

 Percent of scrubber water from recycled wastewater

 Source of scrubbing water and type of pretreatment. Substance(s) 

added as part of pretreatment and amount used (gpm or lbs/hr)

 HAP composition of wastewater (mg/L)

 Concentration (mg/L) of dissolved and suspended solids in 

scrubbing water

 Scrubbing water temperature (°F)

 Liquid/gas ratio (gal/103 acfm)

 Pressure drop across scrubber (in. H2O gauge)

 Amount of wastewater generated (gpd)

 Amount of wastewater recycled (gpd)

 Amount of wastewater disposed of (gpd)
 Method of wastewater disposal

 Quantity of solid waste collected (lbs/yr)

 Quantity of solid waste recycled (lbs/yr)

 Quantity of solid waste disposed of (lbs/yr)

 Method of solid waste disposal

 Vendor guarantee on scrubber efficiency (attach copy)

 Nature and frequency of preventive maintenance procedures

 Problems experienced with control device within the last five years; 

how were problems solved?

 Continuous monitoring method(s) used to monitor scrubber 

performance, including parameters monitored

 Plans to replace or upgrade scrubber
FORM C-3

AIR POLLUTION CONTROL

III. Mechanical Collector - NA

 For each mechanical collector: Mechanical Collector 1 Mechanical Collector 2 Mechanical Collector 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Manufacturer and model

 Date of original installation

 Type of mechanical collector 

 Gas flow rate to collector (acfm @ °F)

 Inlet gas temperature (°F)

 Outlet gas temperature (°F)

 Inlet grain loading (gr/dscf)

 Outlet grain loading (gr/dscf)

 Average stack opacity (%)

 Overall pressure drop (in. H2O gauge)

 Vendor guarantee on mechanical collector efficiency (attach 

copy)

 Quantity of solid waste collected (lbs/yr)

 Quantity of solid waste recycled (lbs/yr)

 Quantity of solid waste disposed of (lbs/yr)

 Method of solid waste disposal

 Nature and frequency of preventive maintenance procedures

 Problems experienced with control device within the last five 

years; how were problems solved?

 Continuous monitoring method(s) used to monitor performance, 

including parameters monitored

 Plans to replace or upgrade mechanical collector
FORM C-4

AIR POLLUTION CONTROL

IV. Fabric Filter 

 For each fabric filter: Walworth Red Wing Red Wing

 Process line(s) (identification name/number) Cupola Baghouse (C12) South Baghouse (CE001) North Baghouse (CE004)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan) Mineral Wool Cupola (P30) Cupola #1 (EU001) Cupola #2 (EU002)

 Latitude (decimal degrees, six decimal places) 42.537219 44.554932 44.554932

 Longitude (decimal degrees, six decimal places) -88.603374 -92.473599 -92.473599

 Stack or vent height (units) 68 feet 180 feet 180 feet

 Stack or vent diameter (units) 3.5 feet 2.6 feet 2.6 feet

 Manufacturer and model

Seneca Environmental, 

672-FMTHS-12

Two Size 1318 Model 144 TASB Series 6P, Wheelabrator 

Modular Jet III Automatic 

Pulse Type Dust Collector 

Modules

Two Size 1818 Model 144 TASB Series 6P, Wheelabrator 

Modular Jet III Automatic 

Pulse Type Dust Collector 

Modules

 Date of original installation 1993 2005 2002

 Number of compartments 4 2 4

 Number of bags per compartment 168 234 162

 Filter material and coatings applied

Fiberglass with PTFE 

membrane on PTFE coated 

glass

Woven fiberglass with PTFE 

membrane

Woven fiberglass with PTFE 

membrane

 Fabric weight (oz/yd

2

) 22 22 22

 Filter surface area (ft2) 18 9,150 12,672

 Gas flow rate to filter (acfm @ °F) 20,000-25,000 20,000 25,000

 Inlet gas temperature (°F) Unknown approx 275 deg F approx 300 deg F

 Outlet gas temperature (°F) approx 300 deg F approx 240 deg F approx 240 deg F

 Inlet grain loading (gr/dscf) N/A N/A N/A

 Outlet grain loading (gr/dscf) 0.0022 N/A N/A

 Average stack opacity (%) 0-5% < 10% < 10%

 Overall pressure drop (in. H2O gauge) 0.5"-10" 1"-12" 1"-12"
 Method and frequency of bag cleaning

Compressed Air/On 

demand

Pulse bags based on pressure 

differential

Pulse bags based on 

pressure differential

 Vendor guarantee on fabric filter efficiency (attach copy) N/A N/A N/A

 Quantity of solid waste collected (lbs/yr) Unknown Unknown Unknown

 Quantity of solid waste recycled (lbs/yr) 0 0 0

 Quantity of solid waste disposed of (lbs/yr) Unknown Unknown Unknown

 Method of solid waste disposal Landfill Landfill Landfill

 Nature and frequency of preventive maintenance 

procedures

Preventative maintenance 

procedures include: Check 

for fan vibration – biweekly, check for bad fan 

belts – bi-weekly, check 

fan bearings for heat – biweekly, inspect screw 

conveyors – bi-weekly, 

inspect rotary valve – biweekly, check bag poppers 

– bi-weekly, visually 

inspect photohelic lines – 

bi-weekly, Dye check of 

bags – monthly, inspect 

augers – monthly, inspect 

hoppers/ducting – 

monthly, Lime feeder 

inspection - monthly

Preventative maintenance 

procedures include: Inspect 

and clean broken bag 

detector probe - monthly; 

Check that all doors and 

explosion vents are sealed - 

monthly; Clean differential 

lines - monthly; Clean draft 

lines - monthly; Inspect 

broken bag detector - 

monthly; Clean and inspect 

baghouse flow meters - 

monthly; Clean hopper walls 

and vacuum dust from the 

tube sheet - monthly; Check 

firing of all blow tube 

solenoids - monthly; Visolite 

to check for leaks - bimonthly; Check seals on 

doors - monthly; Inspect ID 

fan - quarterly; Inspect auger 

- quarterly;

Preventative maintenance 

procedures include: Inspect 

and clean broken bag 

detector probe - monthly; 

Check that all doors and 

explosion vents are sealed - 

monthly; Clean differential 

lines - monthly; Clean draft 

lines - monthly; Inspect 

broken bag detector - 

monthly; Clean and inspect 

baghouse flow meters - 

monthly; Clean hopper walls 

and vacuum dust from the 

tube sheet - monthly; Check 

firing of all blow tube 

solenoids - monthly; Visolite 

to check for leaks - bimonthly; Check seals on 

doors - monthly; Inspect ID 

fan - quarterly; Inspect auger 

- quarterly;
 Problems experienced with control device within the last 

five years; how were problems solved? None

To minimize fires in the 

fabric filter system due to 

sulfur accumulation, Red 

Wing maintains the exhaust 

temperature higher then the 

sulfur dew point.

To minimize fires in the 

fabric filter system due to 

sulfur accumulation, Red 

Wing maintains the exhaust 

temperature higher then the 

sulfur dew point.

 Continuous monitoring method(s) used to monitor 

performance, including parameters monitored

Pressure Drop measured 

each shift. Pressure drop 

between 0.5" and 10" H20.

Broken bag detector; 

Pressure drop between -1" 

and -12"H20.

Broken bag detector; 

Pressure drop between -1" 

and -12"H20.

 Plans to replace or upgrade fabric filter None None None
FORM C-5

AIR POLLUTION CONTROL

V. Thermal Incinerator

 For each thermal incinerator Walworth Red Wing

 Process line(s) (identification name/number) Afterburner (C11) Thermal Oxidizer (CE003)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan) Mineral Wool Cupola (P30)

Cupola #1 and Cupola #2 

(EU001 and EU002)

 Latitude (decimal degrees, six decimal places) 42.537217 44.554932

 Longitude (decimal degrees, six decimal places) -88.603478 -92.473599

 Stack or vent height (units) 68 feet 180 feet

 Stack or vent diameter (units) 3.5 feet 2.6 feet

 Manufacturer and model

Modern Equipment. Model 

Unknown. 

Weishaupt Burner Model 

No. G70/2-A,ZM

 Date of original installation 1986 1999

 Fuel type: gas or oil Gas Gas

 Fuel consumption rate (BTU/hr)

8.4 mmbtu/hr (natural gas 

or propane) 35 mmBtu/hr (natural gas)

 Inlet gas flow rate (acfm @ °F) Varies Varies

 Inlet gas temperature (°F) 500F-700 deg F approx 240 deg F

 Combustion chamber gas temperature (°F) 1450 deg F 1400-1750 deg F

 Outlet gas temperature (°F) 1375 deg F 171 deg F

 Inlet grain loading (gr/dscf) N/A Varies

 Outlet grain loading (gr/dscf) N/A Varies

 Average stack opacity (%) 0-5% < 10%

 Excess air (%) 10% Varies

 Residence time (sec) at temperature (°F) Varies Varies

 Percent heat recovery 0 0

 Vendor guarantee on incinerator efficiency (attach copy)

N/A N/A
 Nature and frequency of preventive maintenance procedures

Preventative maintenance 

procedures include: 

Refractory replacement, 

Clean pilot valve – annually, 

Clean burners – Quarterly, 

Inspect refractory – 

Quarterly, Inspect interior of 

incinerator – Quarterly, 

Calibrate burner air/gas 

ratio – Semi-annually.

Preventative maintenance 

procedures include: Lube 

burner linkage - monthly; 

Clean CO sensor - 

monthly; Clean O2 sensor - 

monthly; Inspect high 

temperature diverting 

devices - quarterly; 

Inspect refractory inside 

burner area for cracks - 

quarterly; Inspect nozzles 

and burner - quarterly; 

Inspect refractory inside 

stack area for cracks - 

quarterly; Remove plenum 

door and inspect inside - 

quarterly; Visually inspect 

electrical system - 

quarterly; Inspect safety 

interlocks - annually; 

 Problems experienced with control device within the last five 

years; how were problems solved?

Burner kick-outs resolved by 

re-lighting burners

Occasionally the plant 

experiences high plenum 

temperatures, to protect 

the equipment dilution air 

is added lowering 

temperature to an 

acceptable level.
 Continuous monitoring method(s) used to monitor incinerator 

performance, including parameters monitored Temperature Temperature

 Plans to replace or upgrade thermal incinerator None None
FORM C-6

AIR POLLUTION CONTROL

VI. High Velocity Air Filter (HVAF) - NA

 For each HVAF: HVAF 1 HVAF 2 HVAF 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission 

point designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Manufacturer and model

 Date of original installation

 Inlet gas flow rate (acfm @ °F)

 Inlet gas temperature (°F)

 Outlet gas temperature (°F)

 Inlet grain loading (gr/dscf)

 Outlet grain loading (gr/dscf)

 Average stack opacity (%)

 Water spray pressure (psig), if applicable

 Water spray rate (gpm), if applicable

 Filter face velocity (acfm/ft

2

)

 Maximum pressure drop across mat (in. H

2O gauge)

 Vendor guarantee on HVAF efficiency (attach copy)

 Method and frequency of filter mad advancement

 Amount of wastewater generated (gpd)

 Amount of wastewater recycled (gpd)

 Amount of wastewater disposed of (gpd)

 Method of wastewater disposal

 Quantity of solid waste collected (lbs/yr)

 Quantity of solid waste recycled (lbs/yr)

 Quantity of solid waste disposed of (lbs/yr)

 Method of solid waste disposal
 Nature and frequency of preventive maintenance 

procedures

 Problems experienced with control device within the last 

five years; how were problems solved?

 Continuous monitoring method(s) used to monitor 

HVAF performance, including parameters monitored

 Plans to replace or upgrade HVAF
FORM C-7

AIR POLLUTION CONTROL

VII. Mist Eliminator - NA

 For each mist eliminator: Mist Eliminator 1 Mist Eliminator 2 Mist Eliminator 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Manufacturer and model

 Date of original installation

 Type of mist eliminator

 Gas flow rate to mist eliminator (acfm @ °F)

 Inlet gas temperature (°F)

 Outlet gas temperature (°F)

 Inlet grain loading (gr/dscf)

 Outlet grain loading (gr/dscf)

 Average stack opacity (%)

 Velocity in mist eliminator (ft/sec)

 Pressure drop (in. H2O gauge)

 For chevron blade mist eliminators:

 Spacing between blades (in.)

 Washing frequency of blades

 For mesh pad mist eliminators:

 Number of pads or elements

 Thickness of pad (in.) or element dimensions

 Density of pad, (lb/ft3)

 Washing frequency of pad

 Vendor guarantee on mist eliminator efficiency (attach copy)

 Amount of wastewater generated (gpd)

 Amount of wastewater recycled (gpd)
 Amount of wastewater disposed of (gpd)

 Method of wastewater disposal

 Quantity of solid waste collected (lbs/yr)

 Quantity of solid waste recycled (lbs/yr)

 Quantity of solid waste disposed of (lbs/yr)

 Method of solid waste disposal

 Nature and frequency of preventive maintenance procedures

 Problems experienced with control device within the last five 

years; how were problems solved?

 Continuous monitoring method(s) used to monitor mist eliminator 

performance, including parameters monitored

 Plans to replace or upgrade mist eliminator 
FORM C-8

AIR POLLUTION CONTROL

VIII. Ventilation System - NA

 For each ventilation system: Ventilation System 1 Ventilation System 2 Ventilation System 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 For general or building ventilation:

 Ventilation system used

 Airflow control system used

 Number of air changes per hour

 For unit or local ventilation:

 Enclosure or hood design used

 Volume of enclosure or hood

 Capture velocity (ft/sec)

 Distance between hood and emission source (ft)
FORM C-9

AIR POLLUTION CONTROL

IX. Other - NA

 For each other air pollution control devide (APCD): Other APCD 1 Other APCD 2 Other APCD 3

 Process line(s) (identification name/number)

 Equipment/process(es) controlled. Include emission point 

designations (e.g., E3, E4 from plot plan)

 Latitude (decimal degrees, six decimal places)

 Longitude (decimal degrees, six decimal places)

 Stack or vent height (units)

 Stack or vent diameter (units)

 Description
FORM D

PROCESS LINE STARTUP AND SHUTDOWN

1. For each startup and shutdown (SS) that occurred during the past 

five years, please provide the following information requested in A. 

through J. 

USG does not operate a Major Source of HAPs emissions at the Walworth, 

WI and Red Wing, MN mineral wool Plants. Due to the fact that USG only

operates area HAPs sources, formal startup, shutdown and malfunction 

plans and procedures are not required. (No SSMP)

 A. Using the definitions provided above, indicate whether the 

event was a startup or shutdown;

USG is not required to make a record of each startup and shutdown at its 

mineral wool production facilities in Walworth, WI and Red Wing, MN. 

 B. A description of the event, including identification of the 

emissions source or sources associated with the startup or 

shutdown;

USG is not required to make a record of each startup and shutdown at its 

mineral wool production facilities in Walworth, WI and Red Wing, MN. 

 C. Whether any permit condition was exceeded and, if so, what 

permit condition was exceeded; NA

 D. Whether the event was covered by any contingency plan for 

controlling emissions during startup and shutdown events and, if so, 

whether the plan was followed; if the plan was not followed, why not; NA

 E. The duration of the event; NA

 F. The actions taken to minimize emissions during the event, 

including the use of any backup control systems; NA

 G. Estimates or measurements, if any, of emissions during the 

event; if you did not have the ability to quantify emissions during the 

event, please explain why; NA

 H. Whether the emission profile of each unit was different during 

startup and shutdown than during normal operating conditions and, if 

so, how emissions were different and why; please provide any

supporting information;

The emission profile during startup and shutdown is not different than the 

profile during normal operating conditions. 

 I. All performance test data collected during each period of SS; 

the test method used for each event; when the testing was 

conducted and why; the test conditions at the time of testing; and 

whether the tests were associated with a routine startup or shutdown; 

and NA

Startup: the setting in operation of an affected source or portion of an affected source for any purpose.

Shutdown: the cessation of operation of an affected source or portion of an affected source for any purpose.
 J. All monitoring data, including control system parameter 

monitoring, collected during each period of SS. NA

If this information is contained in periodic and immediate SS reports 

(either stand-alone or contained within the periodic excess emissions 

report) submitted to your permitting authority, you may submit copies 

of those reports instead.

2. Are there any types of startup or shutdown events that you have 

been able to eliminate? If so, please describe the type of event and 

explain how these events were eliminated. NA

3. Please submit a copy of your SS plan if you are required to 

develop one. NA

4. Please provide all performance test data collected during periods 

of SS over the last 5 years. Indicate the test method used for each 

event. NA

5. Please provide all monitoring data, including control system 

parameter monitoring, collected during periods of SS over the last 5 

years. NA

6. Optional: Do you wish to recommend a standard that would apply

during startup or shutdown? If so, please describe the event to 

which the standard would apply; the recommended standard (this 

could be an emission limitation, work practice, or operational 

standard) that would apply during the period; the basis for the 

recommended standard; why and how the standard would minimize 

emissions during the event; and how would compliance be 

determined and/or monitored. NA
FORM E

Please provide any existing emissions information and data covering 

hazardous air pollutants (HAP), particulate matter (PM), and carbon 

monoxide (CO) for each listed process. Identify the appropriote box for 

which you are providing specific process inofrmation and/or pollutant 

emissions data.

Cupola Fiberization Fiber Collection Curing Cooling

Carbon monoxide (CO)

Carbonyl sulfide (COS)

Particulate Matter (PM, PM2.5, PM10, PM condensable) 

Chromium compounds and Hexavalent Chromium (including any Cr 

speciation data)

Other metal HAP (As, Be, Cd, Co, Hg, Pb, Mn, Sb, Se)

Hydrogen Fluoride (HF)

Hydrogen Chloride (HCl)

Formaldehyde

Phenol

Methanol

The existing data requested here has been provided to EPA by the 

industry’s trade association, the North American Insulation 

Manufacturers Association (“NAIMA”). The existing data provided by

NAIMA was set forth in NAIMA’s May 5, 2010 letter to EPA. The 

representative existing emissions data provided from fiber glass 

companies included test results for the following pollutants: 

formaldehyde, methanol, phenol, particulate matter, hydrogen 

fluoride, metals (antimony, arsenic, beryllium, cadmium, chromium, 

cobalt, lead, manganese, nickel, and selenium), mercury, and 

hexavalent chromium. The representative existing emissions data 

provided from mineral wool companies included test results for the 

following pollutants: formaldehyde, methanol, phenol, particulate 

matter, carbon monoxide, carbonyl sulfide, hydrogen fluoride, metals 

(antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead, 

manganese, nickel, and selenium), mercury, and hexavalent 

chromium. The scope of the existing data provided was the result of 

consensus reached by EPA, NAIMA, and industry representatives. In 

addition to the existing data submitted to EPA, extensive new 

emissions data is being collected from virtually all companies through 

the “BTEC, Inc. Quality Assurance Project Plan for the Mineral Wool 

and Wool Fiberglass Emissions Test Program.” This Test Program 

will collect and submit to EPA, through EPA’s Electronic Reporting 

Tool, representative emissions data for the following pollutants: 

formaldehyde, methanol, phenol, particulate matter, carbon 

monoxide, carbonyl sulfide, hydrogen fluoride, metals (antimony, 

arsenic, beryllium, cadmium, chromium, cobalt, lead, manganese, 

nickel, and selenium), mercury, and hexavalent chromium.
Other organic HAP
COMPANY CONFIDENTIAL

FORM F-1 

COST

I. Process Unit (e.g., cupola, curing oven, etc.):

WALWORTH 

 For each process unit: Process Unit 1

 Process Unit ID Mineral Fiber Operation

 Process Line ID Mineral Fiber Operation

II. Capital Costs

 Base year no data

 Total capital cost, including costs for individual pieces, if available. no data

III. Annual Operating Costs

 Base year (most recent fiscal year) 2009

 Total annual operating costs CBI

 Maintenance materials and replacement parts (specify costs by item) CBI

 Raw materials costs CBI

 Labor

 ($/yr) for each labor class - Production CBI

 ($/yr) for each labor class - Maintenance CBI

 (hr/hr) for each labor class - Production (labor hr / gross hr) CBI

 (hr/hr) for each labor class - Maintenance (labor hr / gross hr) CBI

 Utilities (breakdown for each utility) - Natural gas *see Pollution Control (F-2)

 Utilities (breakdown for each utility) - Power CBI

 Waste treatment and/or disposal CBI

 Costs associated with any work practices and pollution prevention 

techniques that are employed at your facility n/a

 Savings associated with heat recovery and wastewater and/or solid waste 

returned to process from APCD (or sold to another user) n/a

 Indirect costs no data

 Other (specify) n/a

Please provide the annual report to shareholders or equivalent for the 

most recent fiscal year. If reports are not available, provide annual sales 

and profits (or profit margin) for the most recent fiscal year. If company is 

publicly owned, please provide a web link to this information. n/a

Financial information provided on the Information Collection 

Request Forms F-1 and F-2 are estimates and should not be 

interpreted as actual cost data. 
COMPANY CONFIDENTIAL

Identify the market range (regional, national, international) of your 

products. International

Can your product(s) be substituted by another product(s)? If so, please list 

your product(s) and substituted product(s). n/a
FORM F-1 (CBI)

COST

I. Process Unit (e.g., cupola, curing oven, etc.):

RED WING RED WING

 For each process unit: Process Unit 1 Process Unit 2

 Process Unit ID Melting Process Melting Process

 Process Line ID Melting Process 1 Melting Process 2

II. Capital Costs

 Base year no data no data

 Total capital cost, including costs for individual pieces, if available. no data no data

III. Annual Operating Costs

 Base year (most recent fiscal year) 2009 2009

 Total annual operating costs CBI CBI

 Maintenance materials and replacement parts (specify costs by item) CBI CBI

 Raw materials costs CBI CBI

 Labor

 ($/yr) for each labor class - Production CBI CBI

 ($/yr) for each labor class - Maintenance CBI CBI

 (hr/hr) for each labor class - Production (labor hr / gross hr) CBI CBI

 (hr/hr) for each labor class - Maintenance (labor hr / gross hr) CBI CBI

 Utilities (breakdown for each utility) - Natural gas *see afterburner (F-2) *see afterburner (F-2)

 Utilities (breakdown for each utility) - Power CBI CBI

 Waste treatment and/or disposal no data no data

 Costs associated with any work practices and pollution prevention 

techniques that are employed at your facility n/a n/a

 Savings associated with heat recovery and wastewater and/or solid 

waste returned to process from APCD (or sold to another user) n/a n/a

 Indirect costs no data no data

 Other (specify) n/a n/a

Financial information provided on the Information Collection 

Request Forms F-1 and F-2 are estimates and should not be 

interpreted as actual cost data. The melting process includes 

raw materials and equipment through fiberization. 
Please provide the annual report to shareholders or equivalent for the 

most recent fiscal year. If reports are not available, provide annual 

sales and profits (or profit margin) for the most recent fiscal year. If 

company is publicly owned, please provide a web link to this 

information. n/a

Identify the market range (regional, national, international) of your 

products. International

Can your product(s) be substituted by another product(s)? If so, 

please list your product(s) and substituted product(s). n/a
COMPANY CONFIDENTIAL

FORM F-2 

COST

I. Air Pollution Control Device (APCD)

WALWORTH 

 For each APCD: APCD 1

 APCD ID Wool Pollution Control

 Process Unit ID Wool PCD

II. Capital Costs

 Base year 1987

 APCD equipment purchase cost and what was included CBI

CBI

 List the cost for each piece of auxiliary equipment for each APCD not 

included above None

 Installation cost CBI

 Land purchase cost Not Available

 Total capital cost CBI

 Method of financing APCD Self-Funded

 Retrofit installation No

 Field erected or modular Field Erected

III. Annual Operating Costs

 Base year (most recent fiscal year) 2009

 Maintenance materials and replacement parts (specify costs by item) CBI

 Raw materials costs no data

 Labor

 ($/yr) for each labor class - Maintenance CBI Amounts are included in F-1 WAL

 (hr/hr) for each labor class no data

 Utilities (breakdown for each utility) - Natural gas CBI

 Utilities (breakdown for each utility) - Power CBI Amounts are included in F-1 WAL

Financial information provided on the Information Collection 

Request Forms F-1 and F-2 are estimates and should not be 

interpreted as actual cost data. 
COMPANY CONFIDENTIAL

 Waste treatment and/or disposal 0

 Indirect costs 0

 Other (specify) 0

 Total annual operating cost (most recent fiscal year) CBI

Attach annual report to shareholders or equivalent for the most recent 

fiscal year n/a
FORM F-2 (CBI)

COST

I. Air Pollution Control Device (APCD)

RED WING RED WING

 For each APCD: APCD 1 APCD 2

 APCD ID Thermal Oxidizer South Baghouse

 Process Unit ID Cupola 1 and Cupola 2 Cupola 1

II. Capital Costs

 Base year 1999 2005

 APCD equipment purchase cost and what was included CBI CBI

CBI CBI

 List the cost for each piece of auxiliary equipment for each APCD not 

included above None None

 Installation cost CBI CBI

 Land purchase cost n/a n/a

 Total capital cost CBI CBI

 Method of financing APCD Self Funded Self Funded

 Retrofit installation No Yes

 Field erected or modular Field Erected Field Erected

III. Annual Operating Costs

 Base year (most recent fiscal year) 2009 2009

 Maintenance materials and replacement parts (specify costs by item) CBI CBI

 Raw materials costs CBI CBI

 Labor

 ($/yr) for each labor class CBI CBI

 (hr/hr) for each labor class no data no data

 Utilities (breakdown for each utility) CBI CBI

 Waste treatment and/or disposal CBI CBI

 Indirect costs CBI CBI

 Other (specify) CBI

Financial information provided on the Information Collection Request 

Forms F-1 and F-2 are estimates and should not be interpreted as 

actual cost data. The melting process includes raw materials and 

equipment through fiberization. 
 Total annual operating cost (most recent fiscal year) CBI CBI

Attach annual report to shareholders or equivalent for the most recent 

fiscal year n/a
FORM F-2 (CBI)

COST

I. Air Pollution Control Device (APCD)

 For each APCD:

 APCD ID

 Process Unit ID

II. Capital Costs

 Base year

 APCD equipment purchase cost and what was included

 List the cost for each piece of auxiliary equipment for each APCD not 

included above

 Installation cost

 Land purchase cost

 Total capital cost

 Method of financing APCD

 Retrofit installation

 Field erected or modular

III. Annual Operating Costs

 Base year (most recent fiscal year)

 Maintenance materials and replacement parts (specify costs by item)

 Raw materials costs

 Labor

 ($/yr) for each labor class

 (hr/hr) for each labor class

 Utilities (breakdown for each utility)

 Waste treatment and/or disposal

 Indirect costs

 Other (specify)

RED WING

APCD 3

North Baghouse

Cupola 2

2001

CBI

CBI

CBI

CBI

n/a

CBI

Self Funded

No

Field Erected

2009

CBI

CBI

CBI

no data

CBI

CBI

CBI

Financial information provided on the Information Collection Request 

Forms F-1 and F-2 are estimates and should not be interpreted as 

actual cost data. The melting process includes raw materials and 
 Total annual operating cost (most recent fiscal year)

Attach annual report to shareholders or equivalent for the most recent 

fiscal year

CBI