Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Name

Address

City

State

Zip

Name

Address

City

State

Zip

a. Address

b. City

c. State

d. Zip

e. County

a. Address

b. City

c. State

d. Zip

a. Name (First Name, Last Name)

b. Title

c. Telephone number and extension

d. Fax number

e. E-mail

(Print Name) (Title) (Signature of Responsible Official) (Date)

a. Primary NAICS code

b. Other facility NAICS codes

≤50

51–100

101–500

501–750

751–1000

>1000

≤50

51–100

101–500

501–750

751–1000

>1000

Yes

No

Subpart RRR (Secondary Aluminum)

Diecasting Operations

Foundry

Extruder

Information Collection Request for Secondary Aluminum Production

11. Federal and State rule/permit coverage. (X all that apply to this facility) 

f. If the facility is permanently closed or is not subject to 40 CFR part 63, subpart RRR, 

 please complete this page, sign below and send this page certified mail to the non-CBI 

 address listed on the instruction sheet by XXX, 

A Responsible Official can be the president, vice president, secretary, or treasurer of the company that owns the facility, owner of the facility, plant 

manager, plant engineer or supervisor.

8. Company Size (X one cell)

Note: Aproximate number of all employees (worldwide) of the business enterprise that owns this facility, 

including where applicable, the parent company and all subsidiaries, branches, and unrelated 

establishments owned by the parent company: If your company has a primary NAICS code that does not 

begin with "331---," please also include your average annual sales receipts $____________________ 

(How to calculate average annual receipts and average employment of a firm can be found in 13 CFR § 

121.104 and 13 CFR § 121.106, respectively).

4. Provide mailing address of the facility if different from physical location: 

Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Part A. Facility Information

1. Name and address of legal OWNER of the facility:

7. Facility NAICS codes 

Note: The primary NAICS code represents the line of business that generates the most income for the 

facility.

5. Facility contact able to answer technical questions about the completed survey:

I certify that this facility is permanently closed or is not subject to the National Emission Standards for Hazardous Air Pollutants for 

Secondary Aluminum Production as defined in 40 CFR part 63, subpart RRR.

2. Name and address of legal OPERATOR of the facility, if different from the legal OWNER:

3. Complete street address of facility (physical location):

9. Facility Size (X one cell)

Note: Approximate number of all employees at facility in location identified in question #3 above.

10. Is the legal owner a small entity as defined by the Regulatory Flexibility Act?

(X one cell)

Note: For private businesses, small entity is defined for each NAICS of the owning entity based on 

number of employees and/or company revenue. The NAICS codes used for Secondary Aluminum 

Production are 331312, 331314, 331315, 331319, 331521, 331524, and various codes used for 

operations with Sweat Furnaces. The small business size standards for NAICS subsectors are located at 

the following link: http://www.sba.gov/contractingopportunities/officials/size/

table/index.html. 

6. What is the facility size classification for hazardous air pollutant (HAP) emissions?

(X one cell)

EPA Area source (Synthetic Minor) of HAP

EPA Major Source of Hazardous Air Pollutants (HAP)

EPA Area source (based on potential to emit) of HAP

Page 1 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Subpart LL (Primary Aluminum)

Other (SPECIFY rule name 

and subpart)

Other (SPECIFY rule name 

and subpart)

(SPECIFY rule name and 

(SPECIFY rule name and 

(SPECIFY the basis for your 

Title V permit) 

(SPECIFY rule name and 

(SPECIFY rule name and 

Other MACT (e.g., Metal Coil Surface 

Coatings MACT): 

Other MACT: (SPECIFY emission unit 

and rule)

Hours/day:

Shifts/day:

Days/week:

Weeks/year:

Aluminum Scrap Shredder

Thermal Chip Dryer

Scrap Dryer/

Delacquering/Decoating 

Kiln

Group 1 Furnace—Clean 

charge only**

Group 1 Furnace—

Handling other than clean 

charge**

Group 2 Furnace**

In-line Fluxer

Dross-only Furnace

Rotary Dross Cooler

Sweat Furnace

Type Device ID No.

For purposes of this section, "Maximum Capacity" of a unit is defined as the unit's potential to process charge or produce aluminum at its maximum rate on mass/time 

basis. If your permit limits the throughput or output of the unit, then that permitted amount may be used to calculate the maximum capacity.

State Air Toxics:

12. Normal Facility Production Hours

New Source Performance Standards (NSPS):

Title V:

13. Total amount of aluminum produced in 2009. If 2009 is not representative of normal 

operations, please provide information for a representative year (2004 or later) and specify 

the year.

14. Amount of total charge to the facility used to produce the amount of aluminum reported 

in question #13:

Tons of charge:

Tons of aluminum produced:

Year:

16. Please provide a copy of a schematic of the plant layout for equipment subject to subpart 

RRR, control devices, and discharge stacks associated with these units. Label the schematic 

with the unit IDs, control device IDs, and stack IDs, which should also match the unit IDs, 

control device IDs, and stack IDs used to respond to later questions. Please properly identify 

units that are permanently "out of service" or not yet installed. 

17. Please provide all of the pertinent information listed below. Please provide electronic 

copies, if available, and indicate items provided below. (X all that apply)

Notice(s) of air operating permit violations for the past 3 years

Startup, shutdown, and malfunction (SSM) plan

Title V permit

19. For Each Scrap Shredder

Most recent Consent decree or order for air related issues

* Please complete this column if ID numbers used in this form are different from those in the permit.

Part C. Charge Rates and Controls Used for Major Sources Subpart RRR MACT 

Please provide the information below for all regulated equipment at your facility; use information for this section from whichever year (2004 or later) is representative of 

the highest emissions per ton of production (please specify year): 

Emission inventory reports (reporting years should be the same as 

the years selected for this survey)

18. Related Equipment List

Part B. Facility Equipment Regulated under Subpart RRR (Secondary Aluminum NESHAP)

See “Definitions” in Attachment 1 at the end of this survey for explanation of these terms. For the purposes of this survey, scrap wells and wells of 

similar function as the side well shall be considered a sidewell. Please provide the information below for all equipment at your facility.

Operating, maintenance, and monitoring plan (OM&M)

State Air Operating permit

Pending air permit applications (except for state and Title V renewal 

applications)

Performance test reports (submit most recent test reports for each 

subpart RRR related process) . This includes any test data on air 

emission sources, e.g., HF testing, bag hosue dust analyses, etc., 

not previously submitted to our office under a section 114 request.

15. Approximately what percentage of the facility's total charge (in #14 above) is considered 

clean charge?

** Please indicate which of the Group 1 or Group 2 furnaces listed above that have side wells or scrap wells.

Unit Identification 

Numbers

(Unit ID No.)

Unit ID No. as Designated in 

Title V or State Operating 

Permit* Subpart RRR Equipment

Do You Have This 

Equipment at the 

Facility?

(Y or N)

Add-on Controls

(Y or N)

Operating in 

2009?

(Y or N)

If "No," list last 

year of operation

Percent (%):

Amount of Charge 

(tons/yr)

Maximum Capacity of 

Unit 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

Unit ID No. (lbs/hr)*

Control Device

Page 2 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Type Device ID No.

Type Device ID No.

Type Device ID No.

Type Device ID No.

Type Device ID No.

Type Device ID No.

Type Device ID No.

Type Device ID No.

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a representative unit was 

conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested units.

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Maximum Capacity of 

Unit

(tons/yr)

Amount of Charge 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Control Device

27. For Each Sweat Furnace

Amount of Charge 

(tons/yr)

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

20. For Each Thermal Chip Dryer

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

Unit ID No.

Amount of Dross Charged 

(tons/yr)

Unit ID No.

Amount of Chips Charged 

(tons/yr)

21. For Each Scrap Dryer/Delacquering Kiln/Decoating Kiln

Unit ID No.

Amount of Charge 

(tons/yr)

** If the kiln is equipped with an afterburner operated at a minimum of 760°C (1400 °F), with a design residence time of 1 second minimum, enter the control device ID 

Nos. here:

22. For Each Dross Only Furnace

Control Device

Control Device**

Control Device

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Maximum Capacity of 

Unit 

(tons chips/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Maximum Capacity of 

Unit 

(tons/yr)

Unit ID No.

Amount of Charge 

(tons/yr)

Control Device

Only Clean Charge 

(yes/no)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

24. For Each Group 1 Furnace

Maximum Capacity of 

Unit 

(tons dross/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

25. For Each Group 2 Furnace

26. For Each In-Line Fluxer

Unit ID No.

Amount of Charge 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Control Device

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Maximum Capacity of 

Unit 

(tons/yr)

Unit ID No.

Unit ID No.

Maximum Capacity of 

Unit

(tons/yr)

Maximum Number of 

Times the Unit Can 

Run in a 24-hr Period

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a representative unit was 

conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested units.

Maximum Capacity of Control Device**

Unit 

(tons/yr)

Control Device

23. For Each Rotary Dross Cooler

Unit ID No.

Amount of Dross Charged 

(tons/yr)

Maximum Capacity of 

Unit 

(tons dross/yr)

Page 3 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

PM 

(lbs/ton)

D/F** 

(grain/ton)

HCl 

(lbs/ton)

Total 

Hydrocarbons 

(THC) (lbs/ton) Device Type* Unit ID No.

Equipment/Process 

Description Unit ID No.

List Each Individual 

HAP CAS#

Emission Rate 

(lbs/yr)

Maximum 

Allowable 

(lbs/yr)

Maximum 

Allowable 

(lbs/hr)

Emission Factor 

Type*

Equipment/Process 

Description Unit ID No.

List Each Individual 

HAP* CAS#

Emission Rate* 

(lbs/yr)

Maximum 

Allowable 

(lbs/yr)

Maximum 

Allowable 

(lbs/hr)

Emission Factor 

Type**

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

28. For Each Secondary Aluminum Processing Unit (SAPU) Using Emissions Averaging (as per section 63.1505(k))

a. Complete this table if your facility chose to measure compliance using the weight of the feed/charge .

SAPU Unit ID No.

** If the sweat furnace is equipped with an afterburner operated at a minimum of 1600°F, with a design residence time of 0.8 second minimum, enter the control device 

ID here:

Unit Nos. from Questions 

#24 and #26 Making Up the 

SAPU(s)

SAPU Type? 

N = New

E = Existing

Amount of 

Feed/Charge

(tons/yr)

Percent Clean Charge

(approximate)

Part E. Emissions and Limits for Subpart RRR Sources and Non-Subpart RRR Sources

Please provide the information below for all equipment at your facility; use information for this section from 2004 or later, whichever year is representative of the 

highest emissions per ton of production. (please specify year):

SAPU Unit ID No.

Unit Nos. from Questions 

#24 and #26 Making Up the 

SAPU(s)

SAPU Type? 

N = New

E = Existing

Amount of Aluminum 

Produced

(tons/yr)

Percent Clean Charge

(approximate)

For purposes of this section, "Maximum Capacity or Maximum Allowable" of a unit is defined as the unit's potential to process charge or produce aluminum at its 

maximum rate on mass/time basis. If your permit limits the throughput or output of the unit, then that permitted amount may be used to calculate the maximum 

capacity.

37.b. Add-on air pollution control devices (use multiple lines if the same control device is used to control more than one pollutant). (Do not include Primary Aluminum Sources.)

Units Controlled

Control Device (from Part C or D above)

Units Controlled

** Emission Factor Type: 

 1 = Emissions calculated based on source test or other emissions measurements.

 2 = Emissions calculated based on material balance using engineering knowledge of the process.

 3 = Emissions calculated based on AP-42 or EPA 450/2-90-011 or other EPA emission factor.

 4 = Emissions calculated by engineering judgment. (Approved by the State agency)

 5 = Emissions calculated based on a state or local agency emission factor.

Control Device 

Efficiency (if known) 

(percent)

37.a. Add-on air pollution control devices (use multiple lines if the same control device is used to control more than one pollutant).

Part F. Detailed Control Device and Emission Release Information for Subpart RRR MACT Sources and Other Collocated Sources Emitting Hazardous Air Pollutants (HAP)

Use information for this section from 2004 or later, whichever year is representative of the highest emissions per ton of production. (please specify year):

Control Devices

* For example, afterburner, lime coated fabric filter, etc.

** Control & Capture Efficiency 

 a = Testing (specify method)

 b = Manufacturer's Specifications

 c = Engineering Estimate

Please provide any additional information concerning the Control Devices:

Pollutant Controlled

Capture Efficiency 

(if known) 

(percent)

Overall Efficiency 

(if known) 

(percent)

Methods Used for 

Determining 

Capture & Control 

Efficiencies** 

Device Type* Device ID No. (a–c) Type(s) of Unit Unit ID No.

36.a. Please list all regulated pollutant emissions from equipment subject to 40 CFR 63, subpart RRR.

* If you comply with subpart RRR requirements for sweat furnaces by controlling your afterburner residence time, enter “AB/RT” in the table.

** Please include dioxin/furan congeners. Use additional lines to break these out, if necessary.

* Emission Factor Type: 

1 = Emissions calculated based on source test or other emissions measurements.

2 = Emissions calculated based on material balance using engineering knowledge of the process.

3 = Emissions calculated based on AP-42 or EPA 450/2-90-011 or other EPA emission factor.

4 = Emissions calculated by engineering judgment. (Approved by the State agency)

5 = Emissions calculated based on a state or local agency emission factor.

* Copies of test data reports for your HAP emissions from non-subpart RRR sources are not required. HAP emissions data previously submitted for Primary Aluminum is not required. Please include all other HAP 

emissions.

Unit ID No. Emissions Unit Name

Emissions of Regulated RRR Pollutants Based on Performance Tests

36.b. Please list all other HAP emissions from equipment subject to 40 CFR 63, subpart RRR. (please include fugitive emissions.)

36.c. Please list estimated HAP emissions from collocated sources that are not regulated under 40 CFR 63, subpart RRR.

(Please include fugitive emissions.) Do not include Primary Aluminum Sources. Gas fired equipment (such as preheater boxes and annealing furnaces, etc.) not regulated 

under 40 CFR 63, subpart RRR may be combined into a single entry.

List Dates of the 

Applicable 

Compliance Tests*

b. Complete this table if your facility chose to measure compliance using the weight of the aluminum produced .

Please provide the information below for subpart RRR MACT sources .

Please provide the information below for sources not subject to subpart RRR MACT sources .

Control Devices

Page 4 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Unit Name Unit ID No.

Was the level of molten metal maintained above the top of the 

passage between the sidewell and hearth during periods of 

reactive fluxing?

Was the level of molten metal maintained above the top of the 

passage between the sidewell and hearth continuously?

How was the molten metal level monitored?

c. For each Group 1 furnace that is not ducted to a control device :

Was reactive flux used in the sidewell, hearth, both, or neither?

Please provide any additional information concerning the Control Devices:

Furnace ID

b. For each sidewell (scrapwell) furnace 

* For example, afterburner, lime coated fabric filter, etc.

** Control & Capture Efficiency 

 a = Testing (specify method)

 b = Manufacturer's Specifications

 c = Engineering Estimate

Methods Used for 

Determining 

Capture & Control 

Efficiencies** 

Device Type* Device ID No. (a–c) Type(s) of Unit Unit ID No.

Overall Efficiency 

(if known) 

(percent)

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge Exit Gas 

Temperature 

(degrees F)

Flow Rate (SCFM)

38.a. For each stack/control device exhaust point, please provide the following information, if known, related to the information in Item #37a above. (Subpart RRR MACT Sources)

Unit ID No.

What Control Devices are 

Vented at this Point? 

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

Pollutant Controlled

Capture Efficiency 

(if known) 

(percent)

Control Device 

Efficiency (if known) 

(percent)

Pollutant(s) Tested

Emissions 

(specify units)

40. For each affected source listed in [Section B, above], identify the date(s) of latest NESHAP compliance testing. 

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge Exit Gas 

Temperature 

(degrees F)

Discharge Exit Gas 

Temperature 

(degrees F)

ID of other furnaces for which this test was used to determine 

representative emission rates. 

Is this furnace operated continuously or batch-by-batch?

Does the furnace process metal other than clean charge?

Longitude*

Flow Rate (SCFM)

38.b. For each stack/control device exhaust point, please provide the following information, if known, related to the information in Item #37b above. (Non-Subpart RRR MACT Sources) Do not include Primary Aluminum Sources. If 

emissions from gas fired equipment were combined in question #36c and discharged through different stacks, please estimate the fraction of the discharge emitted through each stack.

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

Date Tested

Emission Unit

Test Method Used

Exit Gas 

Temperature 

(degrees F)

What period of time during each run was metal tapped from the 

furnace?

Is this a sidewell (scrapwell) furnace?

Is this a melting or holding furnace?

Furnace ID*

How many runs were included in the test?

What was the length of each performance test run?

How many minutes during each run was the charging door open?

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

Furnace ID

Is the furnace equipped with a hood or other type of enclosure 

as part of the emissions collection system?

* Where two or more co-controlled furnaces were tested simultaneously, list all furnace IDs.

a. For each Group 1 furnace for which a performance test was conducted:

If yes, please describe.

What steps were taken during the test to minimize emissions 

from the furnace doors, etc.?

Latitude* Longitude*

Flow Rate (SCFM)

Latitude*

Latitude* Longitude*

Latitude* Longitude*

Flow Rate (SCFM)

39.a. For each exhaust point/stack not associated with a control device for Subpart RRR MACT Sources, please provide the following information:

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

39.b. For each exhaust point/stack not associated with a control device for Non-Subpart RRR MACT Sources , please provide the following information: (Do not include Primary Aluminum Sources)

Height of Stack or 

Discharge (ft)

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

Page 5 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Flux Identification

Flux Still in Use?

(Y or N)

Reactive = R

Non-reactive = N Mass Used (lbs/yr)

Furnace or In-line 

Fluxer ID in which 

Flux was Used

Purpose 

(e.g., cover, 

degassing, demagging, 

etc.)

Is the furnace equipped with a capture system to limit fugitive 

emissions?

If yes, please describe.

Were visible emissions monitored during the performance test?

Were visible emissions observed during the performance test?

d. For each Group 1 furnace that is ducted to a control device :

Furnace ID

Are visible emissions present during charging?

What, if any, monitoring and inspection is conducted to minimize 

leakage from the duct leading to the control device?

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

e. For each thermal chip dryer, scrap dryer/delacquering kiln/decoating kiln, sweat furnace, dross only furnace and rotary dross cooler:

Were visible emissions observed during the performance test?

Equipment ID & Type

Is this unit equipped with a hood or other capture devices as 

part of the emissions collection system?

If yes, please describe.

Were visible emissions monitored during the performance test?

a. What type of pretreatment (including, but not limited to, air drying, centrifugal drying, etc.) takes place to get the charge ready for processing?

b. Do you track the amount of aluminum produced as well as the amount of charge?

c. Could you develop and report your emission rates in terms of amount of emissions per unit of aluminum produced? If not, what prevents you from doing so?

a. What fluxes were used during the representative year used in Part F? Please attach MSDS for each flux:

43. Fluxing for Subpart RRR MACT Sources

44. Alternative controls, monitoring, or operating conditions for Subpart RRR MACT Sources

Base Year for 

For the control technologies identified in question 44a above, please provide cost information:

Control Device Total Capital 

Total Annual 

Operating and 

Are visible emissions present during loading and unloading of the 

unit?

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

c. What, if any, modifications to the capture systems of existing sources were made to demonstrate compliance with this standard (e.g., extending hoods, increasing exhaust rate, 

modifying operating procedures, etc.)?

d. Were there any problems that were encountered during the permitting process or operation of your facility due ot the way the rule is written in subpart RRR?

Part G. Facility Operations 

41. For affected sources at your facility subject to subpart RRR that are ducted to add-on control devices:

b. What design parameters were measured to confirm this?

d. How do you ensure that the molten metal in the sidewell furnace remains above the top of the passage between the sidewell and the hearth during reactive fluxing?

a. Please provide details for any alternative control devices (i.e., control devices other than fabric filters, lime-coated fabric filters, or afterburners), monitoring (including particulate 

matter or HCI continuous emissions monitors), or operating conditions at this facility for equipment regulated under 40 CFR 63, subpart RRR.

42. General Questions for Subpart RRR MACT Sources

c. Do you use different types or quantities of flux for different flux applications? If so, how do the procedures differ?

d. What are your flux rate operating and monitoring procedures?

b. If you have sidewell (scrapwell) furnaces, did you use reactive flux in the sidewell and the hearth? If so, did you test emissions from both sources?

a. Are these sources equipped with capture systems designed and installed in accordance with the standard (i.e., sections 3 and 5 of the ACGIH manual)?

Maximum lbs/hr of hydrogen fluoride emitted

What fraction of the fluoride contentof the flux used was emitted as either HF, F2, or particulate fluoride (%)?

Pounds of hydrogen fluoride emitted per ton of charge (lbs HF/ton charge)

e. Do you have any hydrogen fluoride emissions data for Subpart RRR MACT Sources? If so, please provide the data reports or other supporting data for the following:

Maximum tons/yr of hydrogen fluoride emissions

Page 6 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Type/Description Device ID. No.

Startup/Shutdown*

Description of the event, including 

identification of the emissions source or 

sources [unit ID(s)] associated with 

the startup or shutdown.

Was any permit condition was 

exceeded and, if so, what permit 

condition was exceeded?

Was the event covered by any 

contingency plan for controlling 

emissions during startup or shutdown 

events and, if so, whether the plan was 

followed; if the plan was not followed, 

why not?

Typical duration of an event.

Actions taken to minimize emissions 

during the event, including the use of 

any backup control systems.

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.

For affected sources ducted to 

afterburners, did any startups or 

shutdowns take place while the 

afterburner was not oeprating, or 

operating outside of the operating 

temperature established during the 

performance test?

For affected sources ducted to control 

devices and monitored by continuous 

opacity monitors, did opacity exceed 

10% during any startup or shutdown 

events?

List performance test data collected 

during each period of startup or 

shutdown, 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.

Lead VOC PM PM10 PM2.5 CO SOx NOx

Unit ID No.

d. Do you have any plans to install any new higher efficiency rated control devices or have any pending applications to add on any new controls? If so, please specify and include any copies 

of pending permit applications as requested in Part A, item #17.

Investment Operating Costs

c. Do you use catalytic filters for dioxin control (e.g., http://www.donaldson.com/en/industrialair/literature/051754.pdf)?

45. Pollution Prevention for Subpart RRR MACT Sources

Other (specify): 

Maintenance Costs

e. Do you have any plans to use any alternative monitoring or operating conditions? If so, please provide details:

A. Describe any procedures or work practice standards used at your facility to prevent or reduce emissions of Hazardous Air Pollutants (HAP). (As opposed to controlling pollution after it is 

formed).

ID No.

CAP Emissions* (tons per year)

Emission Unit

Part I. Criteria Air Pollutants (CAP) for Subpart RRR MACT Sources and Non-Subpart RRR MACT Sources

Please provide the information below for all regulated equipment at your facility; use information for this section from 2004 or later, whichever year has the highest production rate. (please specify year): 

49.a. CAP emissions by unit for each emission unit subject to 40 CFR 63, subpart RRR MACT sources. (Please include fugitive emissions.)

48. Optional: Please recommend a standard that would apply during startup and/or shutdown.Describe the type of event (e;g., defining the beginning and duration of a 

start-up period and similarly for a shutdown) 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 compliance would be determined and/or monitored.

* Please provide any test data along with this section for sources subject to 40 CFR 63, subpart RRR MACT sources.

b. Have you injected activated carbon or other tpe of carbon for HAP control (excluding research efforts)? What barriers do you envision to adding carbon injection to fabric filters for HAP 

control? (X all that apply.)

Cost of activated carbon

Creates problems with disposal of material collected by baghouse

46. For each startup and shutdown event for which you did not follow your Startup/Shutdown plan or that resulted in an exceedance of any applicable emission limitation during the past 

2 years, please provide the requested information in the table below. If this information is contained in periodic and immediate SSM 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. Please provide any emissions data during startup or shutdown, 

if available.

Part H. Startup and Shutdown for Subpart RRR MACT Sources

47. 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.

* Startup : the commencement of 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

Page 7 of 18
Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Lead VOC PM PM10 PM2.5 CO SOx NOx

Control Device ID Type of Device ID(s) of Units Controlled Pollutants Controlled Control Efficiency (%)

 Usage: 

(specify 

units)

Hours 

Used per 

Year

Higher 

Heating 

Value 

(HHV)

 Usage: 

(specify 

units)

Hours 

Used per 

Year

Higher 

Heating 

Value 

(HHV)

 Usage: 

(specify 

units)

Hours 

Used per 

Year

Higher 

Heating 

Value 

(HHV)

Normal Operating Annual 

Electricity Usage Year

Total Facility Usage 

(specify unit of measurement)

*Process unit usage information can be grouped only if individual unit information is not known or cannot be reasonably calculated.

50. Control devices used for CAP emission control for Subpart RRR MACT Sources and Non-Subpart RRR MACT Sources (excluding Primary 

Aluminum).

51. Please list total annual energy consumption. (Exclude emergency combustion equipment.)

Part J. Energy Usage

52. Are any Cogeneration units listed above; if so, please list the unit and describe the process for each.

Part K. Miscellaneous Information

54. What specific improvements or rule changes would you like to see that would help your facility with compliance or better rule interpretation?

Number of Operating 

Hours per Year

Design Capacity (Heat 

Input) (MMBtu/hr)

Emission Unit

CAP Emissions (tons per year)

Is the Unit 

Subject to NSPS 

(if yes, indicate 

year)?

Heat Release Rate 

Fuel Type (Btu/scf)

49.b. PLease list estimated CAP emissions from collocated sources at your facility that are not regulated under 40 CFR 63, subpart RRR MACT sources. (Please include fugitive emissions, but not emissions from Primary Aluminum sources.) Test reports 

are not required to be submitted for sources not subject to 40 CFR 63, subpart RRR.

ID No.

Start-up Fuel

Type of Combustion 

Equipment

Fuels Combusted during Production 

(solid, liquid, and gaseous fuels, including waste streams)

53. Electricity Usage

Fuel #1 Fuel #2 Fuel #3

Process Unit ID No.(s):*

Start-up Fuel 

Higher 

Heating 

Value (HHV)

Typical Length of Time 

for Start-up (hours)

Typical Start-up Fuel 

Amount (specify 

Type of Combustion Equipment units)

Page 8 of 18
Name

Address

City

State

Zip

Name

Address

City

State

Zip

a. Address

b. City

c. State

d. Zip

e. County

a. Address

b. City

c. State

d. Zip

a. Name (First Name, Last Name)

b. Title

c. Telephone number and extension

d. Fax number

e. E-mail

(Print Name) (Title) (Signature of Responsible Official) (Date)

a. Primary NAICS code

b. Other facility NAICS codes

≤50

51–100

101–500

501–750

751–1000

>1000

≤50

51–100

101–500

501–750

751–1000

>1000

Yes

No

Subpart RRR (Secondary Aluminum)

Diecastin

Foundry

Extruder

Subpart LL (Primary Aluminum)

Other 

(SPECIF

Other 

(SPECIF

(SPECIF

(SPECIF

(SPECIF

Y the 

(SPECIF

(SPECIF

Other MACT (e.g., Metal Coil Surface 

Coatings MACT): 

Other MACT: (SPECIFY emission unit 

and rule)

Hours/day:

Shifts/day:

Days/week:

Weeks/year:

Aluminum Scrap Shredder

Thermal Chip Dryer

Scrap Dryer/

Delacquering/Decoating 

Kiln

Group 1 Furnace—Clean 

charge only**

Group 1 Furnace—

Handling other than clean 

charge**

Group 2 Furnace**

In-line Fluxer

Dross-only Furnace

Rotary Dross Cooler

Sweat Furnace

Type Device ID No.

Type* Device ID No.

Type Device ID No.

Type Device ID

Type Device ID No.

Diameter (ft) Area (sq ft) Longitude** Maximum

Minimu

m

PM 

(lbs/ton)

D/F** 

(grain/ton)

HCl 

(lbs/ton)

Total 

Hydrocarbons 

(THC) (lbs/ton) Device Type* Unit ID No.

Equipment/Process 

Description Unit ID No.

List Each Individual 

HAP CAS#

Emission Rate 

(lbs/yr)

Maximum 

Allowable 

(lbs/yr)

Maximum 

Allowable 

(lbs/hr)

Emission Factor 

Type*

Information Collection Request for Secondary Aluminum Production

Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Part A. Facility Information

1. Name and address of legal OWNER of the facility:

2. Name and address of legal OPERATOR of the facility, if different from the legal OWNER:

3. Complete street address of facility (physical location):

5. Facility contact able to answer technical questions about the completed survey:

4. Provide mailing address of the facility if different from physical location: 

f. If the facility is permanently closed or is not subject to 40 CFR part 63, subpart RRR, 

 please complete this page, sign below and send this page certified mail to the non-CBI 

 address listed on the instruction sheet by XXX, 

I certify that this facility is permanently closed or is not subject to the National Emission Standards for Hazardous Air Pollutants for 

Secondary Aluminum Production as defined in 40 CFR part 63, subpart RRR.

A Responsible Official can be the president, vice president, secretary, or treasurer of the company that owns the facility, owner of the 

facility, plant manager, plant engineer or supervisor.

6. What is the facility size classification for hazardous air pollutant (HAP) emissions?

(X one cell)

8. Company Size (X one cell)

Note: Aproximate number of all employees (worldwide) of the business enterprise that owns this facility, 

including where applicable, the parent company and all subsidiaries, branches, and unrelated establishments 

owned by the parent company: If your company has a primary NAICS code that does not begin with "331---

," please also include your average annual sales receipts $____________________ (How to calculate 

average annual receipts and average employment of a firm can be found in 13 CFR § 121.104 and 13 CFR 

9. Facility Size (X one cell)

Note: Approximate number of all employees at facility in location identified in question #3 above.

EPA Major Source of Hazardous Air Pollutants (HAP)

EPA Area source (based on potential to emit) of HAP

EPA Area source (Synthetic Minor) of HAP

7. Facility NAICS codes 

Note: The primary NAICS code represents the line of business that generates the most income for the 

facility.

10. Is the legal owner a small entity as defined by the Regulatory Flexibility Act?

(X one cell)

Note: For private businesses, small entity is defined for each NAICS of the owning entity based on number 

of employees and/or company revenue. The NAICS codes used for Secondary Aluminum Production are 

331312, 331314, 331315, 331319, 331521, 331524, and various codes used for operations with Sweat 

Furnaces. The small business size standards for NAICS subsectors are located at the following link: 

http://www.sba.gov/contractingopportunities/officials/size/

11. Federal and State rule/permit coverage. (X all that apply to this facility) 

Title V:

State Air Toxics:

New Source Performance Standards (NSPS):

12. Normal Facility Production Hours

Tons of charge:

15. Approximately what percentage of the facility's total charge (in #14 above) is considered 

clean charge?

Percent (%):

16. Please provide a copy of a schematic of the plant layout for equipment subject to subpart 

RRR, control devices, and discharge stacks associated with these units. Label the schematic 

with the unit IDs, control device IDs, and stack IDs, which should also match the unit IDs, 

control device IDs, and stack IDs used to respond to later questions. Please properly identify 

units that are permanently "out of service" or not yet installed. 

13. Total amount of aluminum produced in 2009. If 2009 is not representative of normal 

operations, please provide information for a representative year (2004 or later) and specify the 

year.

Year:

Tons of aluminum produced:

14. Amount of total charge to the facility used to produce the amount of aluminum reported in 

question #13:

17. Please provide all of the pertinent information listed below. Please provide electronic 

copies, if available, and indicate items provided below. (X all that apply)

Operating, maintenance, and monitoring plan (OM&M)

Part B. Facility Equipment Regulated under Subpart RRR (Secondary Aluminum NESHAP)

See “Definitions” in Attachment 1 at the end of this survey for explanation of these terms. For the purposes of this survey, scrap wells and wells of 

similar function as the side well shall be considered a sidewell. Please provide the information below for all equipment at your facility.

Title V permit

State Air Operating permit

Pending air permit applications (except for state and Title V renewal 

applications)

Performance test reports (submit most recent test reports for each 

subpart RRR related process) . This includes any test data on air 

emission sources, e.g., HF testing, bag hosue dust analyses, etc., not 

previously submitted to our office under a section 114 request.

Emission inventory reports (reporting years should be the same as 

the years selected for this survey)

Most recent Consent decree or order for air related issues

Part D. Charge Rates and Controls Used for Area Sources Subpart RRR MACT 

Please provide the information below for all regulated equipment at your facility; use information for this section from 2004 or later, whichever year is representative of the 

highest emissions per ton of production: (please specify year)

* Please complete this column if ID numbers used in this form are different from those in the permit.

** Please indicate which of the Group 1 or Group 2 furnaces listed above that have side wells or scrap wells.

18. Related Equipment List

Unit Identification 

Numbers

(Unit ID No.)

Unit ID No. as Designated in 

Title V or State Operating 

Permit* Subpart RRR Equipment

Do You Have This 

Equipment at the 

Facility?

(Y or N)

Add-on Controls

(Y or N)

Operating in 

2009?

(Y or N)

If "No," list last 

year of operation

Notice(s) of air operating permit violations for the past 3 years

Startup, shutdown, and malfunction (SSM) plan

Control Device**

Maximum Capacity of 

Unit 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

For purposes of this section, "Maximum Capacity" of a unit is defined as the unit's potential to process charge or produce aluminum at its maximum rate on mass/time basis. 

If your permit limits the throughput or output of the unit, then that permitted amount may be used to calculate the maximum capacity.

29. For Each Thermal Chip Dryer

Control Device

Unit ID No.

Amount of Chips Charged 

(tons/yr)

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

** If the kiln is equipped with an afterburner operated at a minimum of 760°C (1400 °F), with a design residence time of 1 second minimum, enter the control device ID Nos. 

here:

31. For Each Group 1 Furnace

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

30. For Each Scrap Dryer/Delacquering Kiln/Decoating Kiln

Unit ID No.

Amount of Charge 

(tons/yr)

Maximum Capacity of 

Unit 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Control Device

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a representative unit was 

conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested units.

Unit ID No. Amount of Charge (tons/yr)

Only Clean Charge 

(yes/no)

Maximum Capacity of 

Unit 

(tons/yr)

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a 

representative unit was conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested 

units.

** If the sweat furnace is equipped with an afterburner operated at a minimum of 1600°F, with a design residence time of 0.8 second minimum, enter the control device ID 

33. For Each In-Line Fluxer

32. For Each Sweat Furnace

Unit ID No.

Amount of Charge 

(tons/yr)

Maximum Capacity of 

Unit 

(tons/yr)

Charge Rate During 

Most Recent 

Performance Test 

(lbs/hr)*

Control Device**

Charge Rate During 

Most Recent 

Performance Test 

Control Device

* If more than one performance test was conducted to demonstrate operation with different types of charge, please enter the maximum charge rate. If a test on a representative unit was 

conducted to demonstrate compliance for similar units, please enter the charge rate during the test used to demonstrate compliance for untested units.

34. Each Secondary Aluminum Processing Unit (SAPU) Using Emissions Averaging (as per section 63.1505(k))

Unit ID No.

Amount of Charge 

(tons/yr)

Maximum Capacity of 

Unit

(tons/yr)

Maximum Number of 

Times the Unit Can 

Run in a 24-hr Period

a. Complete this table if your facility chose to measure compliance using the weight of the feed/charge.

SAPU Unit ID No.

Unit Nos. from Questions 

#31 and #33 Making Up the 

SAPU Type? 

N = New

Amount of 

Feed/Charge

Percent Clean Charge

(approximate)

Discharge

Exit Gas Temperature

(degrees F) Latitude**

Flow Rate (SCFM

b. Complete this table if your facility chose to measure compliance using the weight of the aluminum produced .

SAPU Unit ID No.

Unit Nos. from Questions 

#31 and #33 Making Up the 

SAPU Type? 

N = New

Amount of Aluminum 

Produced

Percent Clean Charge

(approximate)

* For purposes of this section, "Maximum Capacity" of a unit is defined as the unit's potential to process or produce aluminum at its maximum rate on mass/time basis. If your permit limits the throughput or output of the unit, then that permitted amount may be used to calculate the maxiumum capacity.

** Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram, with a latitude/longitude reference point, indicating stack locations.

Part E. Emissions and Limits for Subpart RRR Sources and Non-Subpart RRR Sources

Please provide the information below for all equipment at your facility; use information for this section from 2004 or later, whichever year is representative of the highest 

emissions per ton of production: (please specify year)

35. Please complete this table for any scrap shredder, group 2 furnace, in-line fluxer, dross-only furnace, or rotary dross cooler present at your facility.

Unit ID No. Type of Equipment

Maximum Capactity*

(tons/yr)

What Type of Control 

Device, if Any is Used?

Height of Stack or 

Discharge (ft)

For purposes of this section, "Maximum Capacity or Maximum Allowable" of a unit is defined as the unit's potential to process charge or produce aluminum at its maximum 

rate on mass/time basis. If your permit limits the throughput or output of the unit, then that permitted amount may be used to calculate the maximum capacity.

36.a. Please list all regulated pollutant emissions from equipment subject to 40 CFR 63, subpart RRR.

Unit ID No. Emissions Unit Name

Emissions of Regulated RRR Pollutants Based on Performance Tests Control Device (from Part C or D above)

List Dates of the 

Applicable 

Compliance Tests*

* If you comply with subpart RRR requirements for sweat furnaces by controlling your afterburner residence time, enter “AB/RT” in the table.

** Please include dioxin/furan congeners. Use additional lines to break these out, if necessary.

36.b. Please list all other HAP emissions from equipment subject to 40 CFR 63, subpart RRR. (please include fugitive emissions.)
Information Collection Request for Secondary Aluminum Production

Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

Equipment/Process 

Description Unit ID No.

List Each Individual 

HAP* CAS#

Emission Rate* 

(lbs/yr)

Maximum 

Allowable 

(lbs/yr)

Maximum 

Allowable 

(lbs/hr)

Emission Factor 

Type**

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Diameter (ft) Area (sq ft) Maximum Minimum

Unit Name Unit ID No.

Flux Identification

Flux Still in Use?

(Y or N)

Reactive = R

Non-reactive = N Mass Used (lbs/yr)

Furnace or In-line 

Fluxer ID in which 

Flux was Used

Purpose 

(e.g., cover, 

degassing, 

demagging, etc.)

Type/Description Device ID. No.

Startup/Shutdown*

Description of the event, including 

identification of the emissions source or 

sources [unit ID(s)] associated with the 

startup or shutdown.

Was any permit condition was 

exceeded and, if so, what permit 

condition was exceeded?

Was the event covered by any 

contingency plan for controlling 

emissions during startup or shutdown 

events and, if so, whether the plan was 

followed; if the plan was not followed, 

Typical duration of an event.

Actions taken to minimize emissions 

during the event, including the use of 

any backup control systems.

Estimates or measurements, if any, of 

emissions during the event; if you did 

not have the ability to quantify 

emissions during the event, please 

Control Devices Units Controlled

* Emission Factor Type: 

1 = Emissions calculated based on source test or other emissions measurements.

2 = Emissions calculated based on material balance using engineering knowledge of the process.

3 = Emissions calculated based on AP-42 or EPA 450/2-90-011 or other EPA emission factor.

4 = Emissions calculated by engineering judgment. (Approved by the State agency)

5 = Emissions calculated based on a state or local agency emission factor.

36.c. Please list estimated HAP emissions from collocated sources that are not regulated under 40 CFR 63, subpart RRR.

(Please include fugitive emissions.) Do not include Primary Aluminum Sources. Gas fired equipment (such as preheater boxes and annealing furnaces, etc.) not regulated 

under 40 CFR 63, subpart RRR may be combined into a single entry.

Please provide the information below for subpart RRR MACT sources .

Unit ID No.

* For example, afterburner, lime coated fabric filter, etc.

** Control & Capture Efficiency 

 a = Testing (specify method)

 b = Manufacturer's Specifications

 c = Engineering Estimate

* Copies of test data reports for your HAP emissions from non-subpart RRR sources are not required. HAP emissions data previously submitted for Primary Aluminum is not required. Please include all other HAP emissions.

** Emission Factor Type: 

 1 = Emissions calculated based on source test or other emissions measurements.

 2 = Emissions calculated based on material balance using engineering knowledge of the process.

 3 = Emissions calculated based on AP-42 or EPA 450/2-90-011 or other EPA emission factor.

 4 = Emissions calculated by engineering judgment. (Approved by the State agency)

 5 = Emissions calculated based on a state or local agency emission factor.

Control Device 

Efficiency (if known) 

(percent)

Overall Efficiency 

(if known) 

(percent)

Part F. Detailed Control Device and Emission Release Information for Subpart RRR MACT Sources and Other Collocated Sources Emitting Hazardous Air Pollutants (HAP)

Use information for this section from 2004 or later, whichever year is representative of the highest emissions per ton of production: (please specify year)

37.a. Add-on air pollution control devices (use multiple lines if the same control device is used to control more than one pollutant).

Device Type* Device ID No. Pollutant Controlled

Capture Efficiency 

(if known) 

(percent)

Methods Used for 

Determining 

Capture & 

Control 

Efficiencies** Type(s) of Unit

Pollutant Controlled

Capture Efficiency 

(if known) 

(percent)

Control Device 

Efficiency (if known) 

(percent)

Overall Efficiency 

(if known) 

(percent)

Methods Used for 

Determining 

Capture & 

Control 

Efficiencies** 

Please provide any additional information concerning the Control Devices:

Please provide the information below for sources not subject to subpart RRR MACT sources .

Flow Rate (SCFM)

Type(s) of Unit Unit ID No.

* For example, afterburner, lime coated fabric filter, etc.

** Control & Capture Efficiency 

 a = Testing (specify method)

 b = Manufacturer's Specifications

 c = Engineering Estimate

Please provide any additional information concerning the Control Devices:

37.b. Add-on air pollution control devices (use multiple lines if the same control device is used to control more than one pollutant). (Do not include Primary Aluminum Sources.)

Control Devices Units Controlled

Device Type* Device ID No.

Flow Rate (SCFM)

38.a. For each stack/control device exhaust point, please provide the following information, if known, related to the information in Item #37a above. (Subpart RRR MACT Sources)

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge

Exit Gas 

Temperature Latitude* Longitude*

Flow Rate (SCFM)

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

38.b. For each stack/control device exhaust point, please provide the following information, if known, related to the information in Item #37b above. (Non-Subpart RRR MACT Sources) Do not include Primary Aluminum Sources. If emissions 

from gas fired equipment were combined in question #36c and discharged through different stacks, please estimate the fraction of the discharge emitted through each stack.

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge Exit Gas 

Temperature 

(degrees F) Latitude* Longitude*

Flow Rate (SCFM)

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

39.a. For each exhaust point/stack not associated with a control device for Subpart RRR MACT Sources, please provide the following information:

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge

Exit Gas 

Temperature Latitude* Longitude*

Emissions 

(specify units)

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

39.b. For each exhaust point/stack not associated with a control device for Non-Subpart RRR MACT Sources, please provide the following information: (Do not include Primary Aluminum Sources)

Unit ID No.

What Control Devices are 

Vented at this Point? 

Height of Stack or 

Discharge (ft)

Discharge Exit Gas 

Temperature 

(degrees F) Latitude* Longitude*

a. For each Group 1 furnace for which a performance test was conducted:

Furnace ID*

ID of other furnaces for which this test was used to determine 

representative emission rates. 

Is this furnace operated continuously or batch-by-batch?

* Longitude and Latitude should be specified out to 6 decimal places. If coordinates are not known, please provide a scaled site diagram with a latitude/longitude reference point, indicating stack locations.

40. For each affected source listed in [Section B, above], identify the date(s) of latest NESHAP compliance testing. 

Date Tested

Emission Unit

Test Method Used Pollutant(s) Tested

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

What period of time during each run was metal tapped from the 

furnace?

Is this a sidewell (scrapwell) furnace?

Is this a melting or holding furnace?

Does the furnace process metal other than clean charge?

How many runs were included in the test?

What was the length of each performance test run?

How many minutes during each run was the charging door open?

Was the level of molten metal maintained above the top of the 

passage between the sidewell and hearth continuously?

Was the level of molten metal maintained above the top of the 

passage between the sidewell and hearth during periods of 

reactive fluxing?

How was the molten metal level monitored?

c. For each Group 1 furnace that is not ducted to a control device:

* Where two or more co-controlled furnaces were tested simultaneously, list all furnace IDs.

b. For each sidewell (scrapwell) furnace 

Furnace ID

Was reactive flux used in the sidewell, hearth, both, or neither?

Were visible emissions monitored during the performance test?

Were visible emissions observed during the performance test?

d. For each Group 1 furnace that is ducted to a control device:

Furnace ID

Furnace ID

Is the furnace equipped with a hood or other type of enclosure as 

part of the emissions collection system?

If yes, please describe.

What steps were taken during the test to minimize emissions 

from the furnace doors, etc.?

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

e. For each thermal chip dryer, scrap dryer/delacquering kiln/decoating kiln, sweat furnace, dross only furnace and rotary dross cooler:

Equipment ID & Type

Is this unit equipped with a hood or other capture devices as part 

of the emissions collection system?

Is the furnace equipped with a capture system to limit fugitive 

emissions?

If yes, please describe.

Are visible emissions present during charging?

What, if any, monitoring and inspection is conducted to minimize 

leakage from the duct leading to the control device?

What steps were taken during the test to minimize air emissions 

escaping from the furnace doors, etc.?

41. For affected sources at your facility subject to subpart RRR that are ducted to add-on control devices:

a. Are these sources equipped with capture systems designed and installed in accordance with the standard (i.e., sections 3 and 5 of the ACGIH manual)?

If yes, please describe.

Were visible emissions monitored during the performance test?

Were visible emissions observed during the performance test?

Are visible emissions present during loading and unloading of the 

unit?

d. Were there any problems that were encountered during the permitting process or operation of your facility due ot the way the rule is written in subpart RRR?

Part G. Facility Operations 

b. What design parameters were measured to confirm this?

c. What, if any, modifications to the capture systems of existing sources were made to demonstrate compliance with this standard (e.g., extending hoods, increasing exhaust rate, modifying 

operating procedures, etc.)?

c. Could you develop and report your emission rates in terms of amount of emissions per unit of aluminum produced? If not, what prevents you from doing so?

d. How do you ensure that the molten metal in the sidewell furnace remains above the top of the passage between the sidewell and the hearth during reactive fluxing?

42. General Questions for Subpart RRR MACT Sources

a. What type of pretreatment (including, but not limited to, air drying, centrifugal drying, etc.) takes place to get the charge ready for processing?

b. Do you track the amount of aluminum produced as well as the amount of charge?

b. If you have sidewell (scrapwell) furnaces, did you use reactive flux in the sidewell and the hearth? If so, did you test emissions from both sources?

c. Do you use different types or quantities of flux for different flux applications? If so, how do the procedures differ?

43. Fluxing for Subpart RRR MACT Sources

a. What fluxes were used during the representative year used in Part F? Please attach MSDS for each flux:

Pounds of hydrogen fluoride emitted per ton of charge (lbs HF/ton charge)

Maximum lbs/hr of hydrogen fluoride emitted

d. What are your flux rate operating and monitoring procedures?

e. Do you have any hydrogen fluoride emissions data for Subpart RRR MACT Sources? If so, please provide the data reports or other supporting data for the following:

Maximum tons/yr of hydrogen fluoride emissions

a. Please provide details for any alternative control devices (i.e., control devices other than fabric filters, lime-coated fabric filters, or afterburners), monitoring (including particulate matter 

or HCI continuous emissions monitors), or operating conditions at this facility for equipment regulated under 40 CFR 63, subpart RRR.

What fraction of the fluoride contentof the flux used was emitted as either HF, F2, or particulate fluoride (%)?

44. Alternative controls, monitoring, or operating conditions for Subpart RRR MACT Sources

For the control technologies identified in question 44a above, please provide cost information:

Unit ID No.

Control Device Total Capital 

Investment

Total Annual 

Operating and 

Maintenance Costs

Base Year for 

Operating Costs

Other (specify): 

c. Do you use catalytic filters for dioxin control (e.g., http://www.donaldson.com/en/industrialair/literature/051754.pdf)?

b. Have you injected activated carbon or other tpe of carbon for HAP control (excluding research efforts)? What barriers do you envision to adding carbon injection to fabric filters for HAP control? 

(X all that apply.)

Cost of activated carbon

Creates problems with disposal of material collected by baghouse

e. Do you have any plans to use any alternative monitoring or operating conditions? If so, please provide details:

45. Pollution Prevention for Subpart RRR MACT Sources

d. Do you have any plans to install any new higher efficiency rated control devices or have any pending applications to add on any new controls? If so, please specify and include any copies of 

pending permit applications as requested in Part A, item #17.

46. For each startup and shutdown event for which you did not follow your Startup/Shutdown plan or that resulted in an exceedance of any applicable emission limitation during the past 2 

years, please provide the requested information in the table below. If this information is contained in periodic and immediate SSM 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. Please provide any emissions data during startup or shutdown, if 

available.

A. Describe any procedures or work practice standards used at your facility to prevent or reduce emissions of Hazardous Air Pollutants (HAP). (As opposed to controlling pollution after it is 

formed).

Part H. Startup and Shutdown for Subpart RRR MACT Sources
Information Collection Request for Secondary Aluminum Production

Secondary Aluminum (40 CFR part 63, subpart RRR)

National Emission Standards for Hazardous Air Pollutants (NESHAP)

For affected sources ducted to 

afterburners, did any startups or 

shutdowns take place while the 

afterburner was not oeprating, or 

operating outside of the operating 

temperature established during the 

For affected sources ducted to control 

devices and monitored by continuous 

opacity monitors, did opacity exceed 

10% during any startup or shutdown 

List performance test data collected 

during each period of startup or 

shutdown, 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.

Lead VOC PM PM10 PM2.5 CO SOx NOx

Lead VOC PM PM10 PM2.5 CO SOx NOx

Control Device ID Type of Device ID(s) of Units Controlled Pollutants Controlled Control Efficiency (%)

 Usage: 

(specify 

units)

Hours 

Used 

per Year

Higher 

Heating 

Value 

(HHV)

 Usage: 

(specify 

units)

Hours 

Used 

per Year

Higher 

Heating 

Value 

(HHV)

 Usage: 

(specify 

units)

Hours 

Used 

per Year

Higher 

Heating 

Value 

(HHV)

Normal Operating Annual 

Electricity Usage Year

Total Facility Usage 

(specify unit of measurement)

*Process unit usage information can be grouped only if individual unit information is not known or cannot be reasonably calculated.

* Startup: the commencement of 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

47. 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.

Emission Unit

Part I. Criteria Air Pollutants (CAP) for Subpart RRR MACT Sources and Non-Subpart RRR MACT Sources

Please provide the information below for all regulated equipment at your facility; use information for this section from 2004 or later, whichever year has the highest production rate (please specify year): 

49.a. CAP emissions by unit for each emission unit subject to 40 CFR 63, subpart RRR MACT sources. (Please include fugitive emissions.)

48. Optional: Please recommend a standard that would apply during startup and/or shutdown.Describe the type of event (e;g., defining the beginning and duration of a 

start-up period and similarly for a shutdown) 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 compliance would be determined and/or monitored.

Design Capacity (Heat 

Input) (MMBtu/hr)

50. Control devices used for CAP emission control for Subpart RRR MACT Sources and Non-Subpart RRR MACT Sources (excluding Primary 

Aluminum).

Part J. Energy Usage

Typical Start-up 

Fuel Amount 

(specify units)

ID No. Emission Unit

CAP Emissions* (tons per year)

* Please provide any test data along with this section for sources subject to 40 CFR 63, subpart RRR MACT sources.

49.b. PLease list estimated CAP emissions from collocated sources at your facility that are not regulated under 40 CFR 63, subpart RRR MACT sources. (Please include fugitive emissions, but not emissions from Primary Aluminum sources.) Test reports are 

not required to be submitted for sources not subject to 40 CFR 63, subpart RRR.

ID No.

Is the Unit 

Subject to NSPS 

(if yes, indicate 

year)?

CAP Emissions (tons per year)

Typical Length of Time 

for Start-up (hours)

Start-up 

Fuel Higher 

Heating 

Value (HHV)

51. Please list total annual energy consumption. (Exclude emergency combustion equipment.)

Process Unit ID No.(s):*

Type of Combustion 

Equipment Type of Combustion Equipment

Number of Operating 

Hours per Year Fuel Type

Fuels Combusted during Production 

(solid, liquid, and gaseous fuels, including waste streams)

Fuel #1 Fuel #2 Fuel #3

52. Are any Cogeneration units listed above; if so, please list the unit and describe the process for each.

Heat Release Rate 

(Btu/scf) Start-up Fuel

53. Electricity Usage

Part K. Miscellaneous Information

54. What specific improvements or rule changes would you like to see that would help your facility with compliance or better rule interpretation?
Attachment A

Definitions for subpart RRR MACT sources

Afterburner means an air pollution control device that uses controlled flame combustion to convert combustible materials to 

noncombustible gases; also known as an incinerator or a thermal oxidizer. 

Aluminum scrap means fragments of aluminum stock removed during manufacturing (i.e., machining), manufactured aluminum 

articles or parts rejected or discarded and useful only as material for reprocessing, and waste and discarded material made of 

aluminum.

Aluminum scrap shredder means a unit that crushes, grinds, or breaks aluminum scrap into a more uniform size prior to 

processing or charging to a scrap dryer/delacquering kiln/decoating kiln, or furnace. A bale breaker is not an aluminum scrap 

shredder.

Clean charge means furnace charge materials, including molten aluminum; T-bar; sow; ingot; billet; pig; alloying elements; 

aluminum scrap known by the owner or operator to be entirely free of paints, coatings, and lubricants; uncoated/unpainted 

aluminum chips that have been thermally dried or treated by a centrifugal cleaner; aluminum scrap dried at 343 °C (650 °F) or 

higher; aluminum scrap delacquered/decoated at 482 °C (900 °F) or higher, and runaround scrap.

Cover flux means salt added to the surface of molten aluminum in a group 1 or group 2 furnace, without agitation of the molten 

aluminum, for the purpose of preventing oxidation.

Dross-only furnace means a furnace, typically of rotary barrel design, dedicated to the reclamation of aluminum from dross 

formed during melting, holding, fluxing, or alloying operations carried out in other process units. Dross and salt flux are the sole 

feedstocks to this type of furnace.

Group 1 furnace means a furnace of any design that melts, holds, or processes aluminum that contains paint, lubricants, coatings, 

or other foreign materials with or without reactive fluxing, or processes clean charge with reactive fluxing.

Group 2 furnace means a furnace of any design that melts, holds, or processes only clean charge and that performs no fluxing or 

performs fluxing using only nonreactive, non-HAP-containing/non-HAP-generating gases or agents.

In-line fluxer means a device exterior to a furnace, located in a transfer line from a furnace, used to refine (flux) molten 

aluminum; also known as a flux box, degassing box, or demagging box.

Melting/holding furnace, or melter/holder, means a group 1 furnace that processes only clean charge, performs melting, holding, 

and fluxing functions, and does not transfer molten aluminum to or from another furnace.

Rotary dross cooler means a water-cooled rotary barrel device that accelerates cooling of dross. 

Runaround scrap means scrap materials generated on-site by aluminum casting, extruding, rolling, scalping, forging, 

forming/stamping, cutting, and trimming operations and that do not contain paint or solid coatings. Uncoated/unpainted aluminum 

chips generated by turning, boring, milling, and similar machining operations may be clean charge if they have been thermally 

dried or treated by a centrifugal cleaner, but are not considered to be runaround scrap.

Scrap dryer/delacquering kiln/decoating kiln means a unit used primarily to remove various organic contaminants such as oil, 

paint, lacquer, ink, plastic, and/or rubber from aluminum scrap (including used beverage containers) prior to melting.

Secondary aluminum processing unit (SAPU): an existing SAPU means all existing group 1 furnaces and all existing in-line fluxers 

within a secondary aluminum production facility. Each existing group 1 furnace or existing in-line fluxer is considered an emission 

unit within a secondary aluminum processing unit. A new SAPU means any combination of group 1 furnaces and in-line fluxers 

which are simultaneously constructed after February 11, 1999. Each of the group 1 furnaces or in-line fluxers within a new SAPU 

is considered an emission unit within that secondary aluminum processing unit.

Sidewell means an open well adjacent to the hearth of a furnace with connecting arches between the hearth and the open well 

through which molten aluminum is circulated between the hearth, where heat is applied by burners, and the open well, which is 

used for charging scrap and solid flux or salt to the furnace, injecting fluxing agents, and skimming dross.

Sweat furnace means a furnace used exclusively to reclaim aluminum from scrap that contains substantial quantities of iron by 

using heat to separate the low-melting point aluminum from the scrap while the higher melting-point iron remains in solid form.

Thermal chip dryer means a device that uses heat to evaporate water, oil, or oil/water mixtures from unpainted/uncoated 

aluminum chips.

A-12
CAS Number Chemical Name 

75070 Acetaldehyde

60355 Acetamide

75058 Acetonitrile

98862 Acetophenone

53963 2-Acetylaminofluorene

107028 Acrolein

79061 Acrylamide

79107 Acrylic acid

107131 Acrylonitrile

107051 Allyl chloride

92671 4-Aminobiphenyl

62533 Aniline

90040 o-Anisidine

1332214 Asbestos

71432 Benzene (including benzene from gasoline)

92875 Benzidine

98077 Benzotrichloride

100447 Benzyl chloride

92524 Biphenyl

117817 Bis(2-ethylhexyl)phthalate (DEHP)

542881 Bis(chloromethyl)ether

75252 Bromoform

106990 1,3-Butadiene

156627 Calcium cyanamide

133062 Captan

63252 Carbaryl

75150 Carbon disulfide

56235 Carbon tetrachloride

463581 Carbonyl sulfide

120809 Catechol

133904 Chloramben

57749 Chlordane

7782505 Chlorine

79118 Chloroacetic acid

532274 2-Chloroacetophenone

108907 Chlorobenzene

510156 Chlorobenzilate

67663 Chloroform

107302 Chloromethyl methyl ether

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

B-13
CAS Number Chemical Name 

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

126998 Chloroprene

1319773 Cresols/Cresylic acid (isomers and mixture)

95487 o-Cresol

108394 m-Cresol

106445 p-Cresol

98828 Cumene

94757 2,4-D, salts and esters

3547044 DDE

334883 Diazomethane

132649 Dibenzofurans

96128 1,2-Dibromo-3-chloropropane

84742 Dibutylphthalate

106467 1,4-Dichlorobenzene(p)

91941 3,3-Dichlorobenzidene

111444 Dichloroethyl ether (Bis(2-chloroethyl)ether)

542756 1,3-Dichloropropene

62737 Dichlorvos

111422 Diethanolamine

121697 N,N-Diethyl aniline (N,N-Dimethylaniline)

64675 Diethyl sulfate

119904 3,3-Dimethoxybenzidine

60117 Dimethyl aminoazobenzene

119937 3,3-Dimethyl benzidine

79447 Dimethyl carbamoyl chloride

68122 Dimethyl formamide

57147 1,1-Dimethyl hydrazine

131113 Dimethyl phthalate

77781 Dimethyl sulfate

534521 4,6-Dinitro-o-cresol, and salts

51285 2,4-Dinitrophenol

121142 2,4-Dinitrotoluene

123911 1,4-Dioxane (1,4-Diethyleneoxide)

122667 1,2-Diphenylhydrazine

106898 Epichlorohydrin (l-Chloro-2,3-epoxypropane)

106887 1,2-Epoxybutane

140885 Ethyl acrylate

100414 Ethyl benzene

51796 Ethyl carbamate (Urethane)

75003 Ethyl chloride (Chloroethane)

B-14
CAS Number Chemical Name 

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

106934 Ethylene dibromide (Dibromoethane)

107062 Ethylene dichloride (1,2-Dichloroethane)

107211 Ethylene glycol

151564 Ethylene imine (Aziridine)

75218 Ethylene oxide

96457 Ethylene thiourea

75343 Ethylidene dichloride (1,1-Dichloroethane)

50000 Formaldehyde

76448 Heptachlor

118741 Hexachlorobenzene

87683 Hexachlorobutadiene

77474 Hexachlorocyclopentadiene

67721 Hexachloroethane

822060 Hexamethylene-1,6-diisocyanate

680319 Hexamethylphosphoramide

110543 Hexane

302012 Hydrazine

7647010 Hydrochloric acid

7664393 Hydrogen fluoride (Hydrofluoric acid)

123319 Hydroquinone

78591 Isophorone

58899 Lindane (all isomers)

108316 Maleic anhydride

67561 Methanol

72435 Methoxychlor

74839 Methyl bromide (Bromomethane)

74873 Methyl chloride (Chloromethane)

71556 Methyl chloroform (1,1,1-Trichloroethane)

60344 Methyl hydrazine

74884 Methyl iodide (Iodomethane)

108101 Methyl isobutyl ketone (Hexone)

624839 Methyl isocyanate

80626 Methyl methacrylate

1634044 Methyl tert butyl ether

101144 4,4-Methylene bis(2-chloroaniline)

75092 Methylene chloride (Dichloromethane)

101688 Methylene diphenyl diisocyanate (MDI)

101779 4,4-Methylenedianiline

91203 Naphthalene

B-15
CAS Number Chemical Name 

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

98953 Nitrobenzene

92933 4-Nitrobiphenyl

100027 4-Nitrophenol

79469 2-Nitropropane

684935 N-Nitroso-N-methylurea

62759 N-Nitrosodimethylamine

59892 N-Nitrosomorpholine

56382 Parathion

82688 Pentachloronitrobenzene (Quintobenzene)

87865 Pentachlorophenol

108952 Phenol

106503 p-Phenylenediamine

75445 Phosgene

7803512 Phosphine

7723140 Phosphorus

85449 Phthalic anhydride

1336363 Polychlorinated biphenyls (Aroclors)

1120714 1,3-Propane sultone

57578 beta-Propiolactone

123386 Propionaldehyde

114261 Propoxur (Baygon)

78875 Propylene dichloride (1,2-Dichloropropane)

75569 Propylene oxide

75558 1,2-Propylenimine (2-Methyl aziridine)

91225 Quinoline

106514 Quinone

100425 Styrene

96093 Styrene oxide

1746016 2,3,7,8-Tetrachlorodibenzo-p-dioxin

79345 1,1,2,2-Tetrachloroethane

127184 Tetrachloroethylene (Perchloroethylene)

7550450 Titanium tetrachloride

108883 Toluene

95807 2,4-Toluene diamine

584849 2,4-Toluene diisocyanate

95534 o-Toluidine

8001352 Toxaphene (chlorinated camphene)

120821 1,2,4-Trichlorobenzene

79005 1,1,2-Trichloroethane

B-16
CAS Number Chemical Name 

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

79016 Trichloroethylene

95954 2,4,5-Trichlorophenol

88062 2,4,6-Trichlorophenol

121448 Triethylamine

1582098 Trifluralin

540841 2,2,4-Trimethylpentane

108054 Vinyl acetate

593602 Vinyl bromide

75014 Vinyl chloride

75354 Vinylidene chloride (1,1-Dichloroethylene)

1330207 Xylenes (isomers and mixture)

95476 o-Xylenes

108383 m-Xylenes

106423 p-Xylenes

0 Antimony Compounds

0 Arsenic Compounds (inorganic including arsine)

0 Beryllium Compounds

0 Cadmium Compounds

0 Chromium Compounds

0 Cobalt Compounds

0 Coke Oven Emissions

0 Cyanide Compounds 1

0 Certain Glycol ethers 2

0 Lead Compounds

0 Manganese Compounds

0 Mercury Compounds

0 Fine mineral fibers 3

0 Nickel Compounds

0 Polycyclic Organic Matter 4

0 Radionuclides (including radon) 5

0 Selenium Compounds

NOTE: For all listings above which contain the word “compounds” and for glycol 

ethers, the following applies: Unless otherwise specified, these listings are defined 

as including any unique chemical substance that contains the named chemical 

(i.e., antimony, arsenic, etc.) as part of that chemical’s infrastructure.

1

 XCN where X = H or any other group where a formal dissociation may occur. For 

example KCN or Ca(CN)2.

B-17
CAS Number Chemical Name 

Appendix B

Section 112(b) List of Hazardous Air Pollutants (HAP)

U.S. Code Title 42, Chapter 85, Subchapter 1, Part A, § 7412

2

 Includes mono- and di- ethers of ethylene glycol (except for ethylene glycol 

monobutyl ether (CAS Number 111–76–2), -diethylene glycol, and triethylene 

glycol R–(OCH2CH2)n–OR where

4

 Includes organic compounds with more than one benzene ring, and which have a 

boiling point greater than or equal to 100°C.

5

 A type of atom which spontaneously undergoes radioactive decay.

n = 1, 2, or 3

R = alkyl or aryl groups

R = R, H, or groups which, when removed, yield glycol ethers with the 

structure: R–(OCH2CH)n–OH. Polymers are excluded from the glycol category.

3

 Includes mineral fiber emissions from facilities manufacturing or processing 

glass, rock, or slag fibers (or other mineral derived fibers) of average diameter 1 

micrometer or less.

B-18