ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 51, 60, 61, and 63

[EPA-HQ-OAR-2010-0114; FRL- ]

RIN 2060-AQ01

Revisions to Test Methods and Testing Regulations

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

SUMMARY: This action proposes editorial and technical corrections 

necessary for source testing of emissions and operations. The 

revisions include the addition of alternative equipment and methods 

as well as corrections to technical and typographical errors. We also 

solicit public comment on potential changes to the current procedures 

for determining emission stratification.

DATES: Comments must be received on or before [Insert date 60 days 

after publication in the Federal Register]. 

Public Hearing. If anyone contacts the EPA by [INSERT DATE 10 

DAYS AFTER PUBLICATION IN THE FEDERAL REGISTER] requesting to speak 

at a public hearing, a hearing will be held on [INSERT DATE 30 DAYS 

AFTER PUBLICATION IN THE FEDERAL REGISTER]. 

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQOAR-2010-0114, by one of the following methods:

• www.regulations.gov: Follow the on-line instructions for 

submitting comments.

• E-mail: a-and-r-docket@epa.gov. 

• Fax: (202) 566-9744.
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• Mail: Revisions to Test Methods and Testing Regulations, 

Docket No. EPA-HQ-OAR-2010-0014, Environmental Protection 

Agency, Mailcode: 2822T, 1200 Pennsylvania Ave., NW, 

Washington, DC 20460. Please include a two copies. 

• Hand Delivery: Docket No. EPA-HQ-OAR-2010-0014, EPA Docket 

Center, Public Reading Room, EPA West, Room 3334, 1301 

Constitution Ave., NW, Washington, DC 20460. Such 

deliveries are only accepted during the Docket’s normal 

hours of operation, and special arrangements should be made 

for deliveries of boxed information.

Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-2010-

0114. The EPA’s policy is that all comments received will be 

included in the public docket without change and may be made 

available online at http://www.regulations.gov, including any 

personal information provided, unless the comment includes 

information claimed to be Confidential Business Information (CBI) or 

other information whose disclosure is restricted by statute. Do not 

submit information that you consider to be CBI or otherwise protected 

through www.regulations.gov or e-mail. The www.regulations.gov

website is an “anonymous access” system, which means the EPA will not 

know your identity or contact information unless you provide it in 

the body of your comment. If you send an e-mail comment directly to 

the EPA without going through www.regulations.gov, your e-mail 

address will be automatically captured and included as part of the 

comment that is placed in the public docket and made available on the 
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Internet. If you submit an electronic comment, the EPA recommends 

that you include your name and other contact information in the body 

of your comment as well as with any disk or CD-ROM you submit. If the 

EPA cannot read your comment due to technical difficulties and cannot 

contact you for clarification, the EPA may not be able to consider 

your comment. Electronic files should avoid the use of special 

characters, any form of encryption, and be free of any defects or 

viruses.

Docket: All documents in the docket are listed in the 

www.regulations.gov index. Although listed in the index, some 

information is not publicly available, e.g., CBI or other information 

whose disclosure is restricted by statute. Certain other material, 

such as copyrighted material, will be publicly available only in hard 

copy. Publicly available docket materials are available either 

electronically in www.regulations.gov or in hard copy at the 

Revisions to Test Methods and Testing Regulations Docket, EPA/DC, EPA 

West, Room 3334, 1301 Constitution Ave., NW, Washington, DC 20460. 

The Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday 

through Friday, excluding legal holidays. The telephone number for 

the Public Reading Room is (202) 566-1744, and the telephone number 

for the Revisions to Test Methods and Testing Regulations Docket is 

(202) 566-1742.

FOR FURTHER INFORMATION CONTACT: Mr. Foston Curtis, Office of Air 

Quality Planning and Standards, Air Quality Assessment Division 

(E143-02), Environmental Protection Agency, Research Triangle Park, 
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NC 27711; telephone number: (919) 541-1063; fax number: (919) 541-

0516; e-mail address: curtis.foston@epa.gov. 

SUPPLEMENTARY INFORMATION:

I. General Information

A. Does this action apply to me?

The proposed amendments apply to a large number of industries 

that are already subject to the current provisions of Parts 51, 60, 

61, and 63. Therefore, we have not listed specific affected 

industries or their North American Industry Classification System 

(NAICS) codes here. If you have any questions regarding the 

applicability of this action to a particular entity, consult either 

the air permitting authority for the entity or your EPA regional 

representative as listed in 40 CFR 63.13.

B. What should I consider as I prepare my comments for the EPA?

1. Submitting CBI. Do not submit this information to the EPA 

through http://www.regulations.gov or e-mail. Clearly mark any of the 

information that you claim to be CBI. For CBI information in a disk 

or CD ROM that you mail to the EPA, mark the outside of the disk or 

CD ROM as CBI and then identify electronically within the disk or CD 

ROM the specific information that is claimed as CBI. In addition to 

one complete version of the comment that includes information claimed 

as CBI, a copy of the comment that does not contain the information 

claimed as CBI must be submitted for inclusion in the public docket. 

Information so marked will not be disclosed except in accordance with 

procedures set forth in 40 CFR part 2.
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2. Tips for Preparing Your Comments. When submitting comments, 

remember to:

 Follow directions – The Agency may ask you to respond to 

specific questions or organize comments by referencing a Code of 

Federal Regulations (CFR) part or section number.

 Explain why you agree or disagree, suggest alternatives, 

and substitute language for your requested changes.

 Describe any assumptions and provide any technical 

information and/or data that you used.

 If you estimate potential costs or burdens, explain how you 

arrived at your estimate in sufficient detail to allow for it to be 

reproduced.

 Provide specific examples to illustrate your concerns, and 

suggest alternatives.

 Explain your views as clearly as possible, avoiding the use 

of profanity or personal threats.

 Make sure to submit your comments by the comment period 

deadline identified.

C. Where can I get a copy of this document?

In addition to being available in the docket, an electronic copy 

of this proposed rule will also be available on the Worldwide Web 

(WWW) through the Technology Transfer Network (TTN). Following 

signature, a copy of this proposed rule will be posted on the TTN’s 

policy and guidance page for newly proposed or promulgated rules at 
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the following address: http://www.epa.gov/ttn/oarpg/. The TTN 

provides information and technology exchange in various areas of air 

pollution control. A redline strikeout document that compares the 

proposed revisions to the current rules has also been added to the 

docket.

D. How is this document organized?

The supplementary information in this preamble is organized as 

follows:

I. General Information

A. Does this action apply to me?

B. What should I consider as I prepare my comments for the EPA?

C. Where can I get a copy of this document?

D. How is this document organized?

II. Background

III. Summary of Amendments

A. Appendix M of Part 51

B. Method 201A of Appendix M of Part 51

C. Method 202 of Appendix M of Part 51

D. General Provisions (Subpart A) Part 60

E. Industrial-Commercial-Institutional Steam Generating Units 

(Subpart Db) Part 60

F. Hospital/Medical/Infectious Waste Incinerators (Subpart Ec) Part 

60

G. Sulfuric Acid Plants (Subpart H) Part 60

H. Sewage Treatments Plants (Subpart O) Part 60

I. Kraft Pulp Mills (Subpart BB) Part 60

J. Stationary Gas Turbines (Subpart GG) Part 60

K. Lead-Acid Battery Manufacturing Plants (Subpart KK) Part 60

L. Metallic Mineral Processing Plants (Subpart LL) Part 60

M. Asphalt Processing and Asphalt Roofing Manufacture (Subpart UU) 

Part 60

N. Volatile Organic Chemical (VOC) Emissions from Synthetic Organic 

Compound Manufacturing Industry (SOCMI) Distillation Operations 

(Subpart NNN) Part 60

O. Stationary Compression Ignition Internal Combustion Engines 

(Subpart IIII) Part 60

P. Stationary Spark Ignition Internal Combustion Engines (Subpart 

JJJJ) Part 60

Q. Method 1 of Appendix A-1 of Part 60

R. Method 2 of Appendix A-1 of Part 60

S. Method 2A of Appendix A-1 of Part 60
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T. Method 2B of Appendix A-1 of Part 60

U. Method 2D of Appendix A-1 of Part 60

V. Method 3A of Appendix A-2 of Part 60

W. Method 4 of Appendix A-3 of Part 60

X. Method 5 of Appendix A-3 of Part 60

Y. Method 5A of Appendix A-3 of Part 60

Z. Method 5E of Appendix A-3 of Part 60

AA. Method 5H of Appendix A-3 of Part 60

BB. Method 6 of Appendix A-4 of Part 60

CC. Method 6C of Appendix A-4 of Part 60

DD. Method 7 of Appendix A-4 of Part 60

EE. Method 7A of Appendix A-4 of Part 60

FF. Method 7E of Appendix A-4 of Part 60

GG. Method 8 of Appendix A-4 of Part 60

HH. Method 10 of Appendix A-4 of Part 60

II. Methods 10A and 10B of Appendix A-4 of Part 60

JJ. Method 11 of Appendix A-5 of Part 60

KK. Method 12 of Appendix A-5 of Part 60

LL. Method 14A of Appendix A-5 of Part 60

MM. Method 16A of Appendix A-6 of Part 60

NN. Method 18 of Appendix A-6 of Part 60

OO. Method 23 of Appendix A-7 of Part 60

PP. Method 24 of Appendix A-7 of Part 60

QQ. Method 25 of Appendix A-7 of Part 60

RR. Method 25C of Appendix A-7 of Part 60

SS. Method 25D of Appendix A-7 of Part 60

TT. Method 26 of Appendix A-8 of Part 60

UU. Method 29 of Appendix A-8 of Part 60

VV. Method 30B of Appendix A-8 of Part 60

WW. Performance Specification 1 of Appendix B of Part 60

XX. Performance Specification 3 of Appendix B of Part 60

YY. Performance Specification 4 of Appendix B of Part 60

ZZ. Performance Specification 4B of Appendix B of Part 60

AAA. Performance Specification 7 of Appendix B of Part 60

BBB. Performance Specification 11 of Appendix B of Part 60

CCC. Performance Specification 15 of Appendix B of Part 60

DDD. Performance Specification 16 of Appendix B of Part 

EEE. Procedure 1 of Appendix F of Part 60

FFF. Procedure 2 of Appendix F of Part 60

GGG. Procedure 5 of Appendix F of Part 60

HHH. General Provisions (Subpart A) Part 61

III. Beryllium (Subpart C) Part 61

JJJ. Beryllium Rocket Motor Firing (Subpart D) Part 61

KKK. Mercury (Subpart E) Part 61

LLL. Inorganic Arsenic Emissions from Glass Manufacturing Plants 

(Subpart N) Part 61

MMM. Method 101 of Appendix B of Part 61

NNN. Method 101A of Appendix B of Part 61

OOO. Method 102 of Appendix B of Part 61
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PPP. Method 104 of Appendix B of Part 61

QQQ. Methods 108 and 108A of Appendix B of Part 61

RRR. General Provisions (Subpart A) Part 63

SSS. Synthetic Organic Chemical Manufacturing Industry (Subpart G) 

Part 63

TTT. Chromium Emissions from Hard and Decorative Chromium 

Electroplating and Chromium Anodizing Tanks (Subpart N) Part 63

UUU. Ethylene Oxide Emissions Standards for Sterilization Facilities 

(Subpart O) Part 63

VVV. Marine Tank Vessel Loading Operations (Subpart Y) Part 63

WWW. Aerospace Manufacturing and Rework Facilities (Subpart GG) Part 

63

XXX. Pharmaceuticals Production (Subpart GGG) Part 63

YYY. Secondary Aluminum Production (Subpart RRR) Part 63

ZZZ. Manufacturing of Nutritional Yeast (Subpart CCCC) Part 63

AAAA. Petroleum Refineries: Catalytic Cracking Units, Catalytic 

Reforming Units, and Sulfur Recovery Units (Subpart UUUU) Part 

63

BBBB. Stationary Reciprocating Internal Combustion Engines (Subpart 

ZZZZ) Part 63

CCCC. Method 306 of Appendix A of Part 63

DDDD. Method 306A of Appendix A of Part 63

EEEE. Methods 308, 315, and 316 of Appendix A of Part 63

FFFF. Method 321 of Appendix A of Part 63

IV. Request for Comments

V. Statutory and Executive Order Reviews 

A. Executive Order 12866: Regulatory Planning and Review and 

Executive Order 13563: Improving Regulations and Regulatory 

Review

B. Paperwork Reduction Act

C. Regulatory Flexibility Act

D. Unfunded Mandates Reform Act

E. Executive Order 13132: Federalism

F. Executive Order 13175: Consultation and Coordination with Indian 

Tribal Governments

G. Executive Order 13045: Protection of Children from Environmental 

Health and Safety Risks

H. Executive Order 13211: Actions Concerning Regulations That 

Significantly Affect Energy Supply, Distribution, or Use

I. National Technology Transfer and Advancement Act

J. Executive Order 12898: Federal Actions to Address Environmental 

Justice in Minority Populations and Low-Income Populations

II. Background

The EPA catalogs revisions and updates that are needed to test 

methods, performance specifications, and associated regulations in 40 
Page 9 of 181

CFR parts 51, 60, 61, and 63 and proposes the revisions on a 5- to 

10-year basis. Many of these needed revisions were brought to our 

attention by affected parties and end-users. The revisions consist of 

allowable alternatives that were not previously available, changes 

that avoid using mercury-containing equipment, and updates needed to 

correct obsolete provisions or add flexibility due to people figuring 

out better ways of doing things. Corrections to typographical errors

and technical errors in equations and diagrams are also proposed. It 

is important to note that although numerous technical corrections are 

being proposed to portions of the subparts in parts 51, 60, 61, and 

63, changes are not made to any compliance standard, reporting, or 

recordkeeping requirement. For this notice, the EPA is only proposing 

revisions to sections of the subpart pertaining to source testing or 

monitoring of emissions and operations.

III. Summary of Amendments

A. Appendix M of Part 51

In the introduction of Appendix M of part 51, Methods 3A and 19 

would be added to the list of methods not requiring the use of audit 

samples. Method 3A is a direct measurement instrumental method which 

the audit program does not evaluate, and Method 19 deals with 

calculation procedures and not measurement procedures.

B. Method 201A of Appendix M of Part 51

Revisions would be made to the Method 201A published on December 

21, 2010. Typographical errors in references to isokinetic sampling 

rate, source gas temperatures, stack blockage dimensions by the 
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sampling heads, and PM10 in Sections 8.3.4(b), 8.3.4.1, 8.7.2.2, and 

8.7.5.5(a), respectively, would be corrected. An erroneous reference 

to Methods 4A and 5 in Section 10.1 when using a standard pitot tube 

would be corrected to refer to Methods 1 and 2. Section 10.5, which 

addresses Class A volumetric glassware, would be deleted because it

is not needed in the method. For those filters whose weight cannot be 

weighted to a constant weight in Section 11.2.1, instruction would be 

added to flag and report the data as a minimum value. It would be 

noted that the nozzle, front half, and in-stack filter samples need 

to be speciated into organic and inorganic fractions to be similar to 

the practice in Method 17. The method would also note that neither 

Method 17 nor 201A require a separate analysis of the filter for 

inorganic and organic particulate matter. Method 201A is often used 

together with Method 202 which requires a separate analysis of 

inorganic and organic PM. This note would remind testers that a 

separate analysis is not required for Method 201A. An incorrect term 

in Equation 9 of Section 12.5 would be corrected. In the nomenclature 

in Section 12.1, Vb, the volume of aliquot taken for ion 

chromatography (IC) analysis, would be deleted since no IC analysis 

is performed. 

C. Method 202 of Appendix M of Part 51

Revisions would be made to the Method 202 published on December 

21, 2010. In Section 8.5.3.1, the text referring to empty impingers 

would be deleted because empty impingers are not used. Figures 2 and 

3 would be revised to correctly show the first impinger with an 
Page 11 of 181

extended stem instead of a shortened one to be consistent with the 

method text, and the condensed moisture and sample portion of the 

sampling train would be labeled to make it easy to identify. Figures 

4, 5, and 6 would be republished because they did not print clearly 

in the December 21, 2010 publication. 

D. General Provisions (Subpart A) Part 60 

In the General Provisions of part 60, Methods 3A and 19 would be 

added to the list of methods not requiring the use of audit samples 

in § 60.8(gd). Method 3A is a direct measurement instrumental method 

which the audit program does not evaluate, and Method 19 deals with 

calculation procedures in lieu of measurement procedures. 

A new §60.8(h) would be added to require that sampling sites be 

evaluated for cyclonic flow and stratification before testing. 

Cyclonic flow and gas stratification has not been adequately 

addressed in the past except for particulate measurement methods. Our 

experience has been that gaseous pollutant measurements may also be 

affected by these phenomena. Procedures currently used in Methods 1 

and 7E would be referenced for all tests to evaluate the suitability 

of test locations and give procedures for testing under conditions of 

gas stratification and cyclonic flow to preclude non-representative 

sampling. 

A new §60.8(i)would be added to allow the use of Method 205 of 

40 CFR part 51, Appendix M, “Verification of Gas Dilution Systems for 

Field Instrument Calibrations,” as an alternative provision whenever 

the use of multiple calibration gases is required under part 60. 
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Method 205 has previously been allowed for different applications on 

a case-by-case basis. Method 205 reduces the number of cylinder gases 

needed for a test by allowing lower-concentration gases to be 

generated from a high-level gas. Section 60.13(d)(1) would be

revised to remove the phrase “automatically, intrinsic to the opacity 

monitor” which was incorrectly inserted into the paragraph in a past 

revision. The title of an organization in a method that is 

incorporated by reference would be updated in §60.17(e), and the 

edition of the method referred to in §60.17(e)(1) would be updated to 

reflect the currently available version.

E. Industrial-Commercial-Institutional Steam Generating Units 

(Subpart Db) Part 60

In subpart Db, Method 320 would be added as an alternative to 

the methods for determining nitrogen oxides (NOx) concentration in 

§60.46b(f)(1)(ii), (h)(1) and (2), and sulfur dioxide (SO2) 

concentration in §60.47b(b)(2). The EPA has allowed the use of Method 

320 in the past on a case-by-case basis and now believes it is 

appropriate for general use. 

F. Hospital/Medical/Infectious Waste Incinerators (Subpart Ec) Part 

60

In subpart Ec, the definition of medical/infectious wastes in 

§60.51c would be revised to correct the misspelling of “cremation.”

G. Sulfuric Acid Plants (Subpart H) Part 60

In Subpart H, an equation for calculating the SO2 emission rate 

in §60.84(d) would be corrected.
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H. Sewage Treatment Plants (Subpart O) Part 60 

In subpart O, a reference to Method 209F in §60.154(b)(5) would 

be revised to reflect a newer available version of the method (i.e., 

2540G).

I. Kraft Pulp Mills (Subpart BB) Part 60 

In subpart BB, a typographical error in the equation in 

§60.284(c)(3) would be corrected.

J. Stationary Gas Turbines (Subpart GG) Part 60 

In subpart GG, the definitions of terms for the equation in 

§60.335(b)(l) would be revised to allow the reference combustor inlet 

absolute pressure to be measured in millimeters of mercury (mm Hg). 

Using the site barometric pressure gives comparable results to the 

observed combustor inlet absolute pressure for calculating the mean 

NOx emission concentration and would be allowed as an alternative. 

K. Lead-Acid Battery Manufacturing Plants (Subpart KK) Part 60 

In subpart KK, Method 29 would be added as an alternative to 

Method 12 in §60.374(b)(1)and (c)(2) for determining the lead 

concentration and flow rate of the effluent gas. Method 29 is an 

accepted method for determining lead under other rules and is 

appropriate for this subpart as well. Also, an error in the equation 

for calculating the lead emission concentration in 60.374(b)(2) would 

be corrected.

L. Metallic Mineral Processing Plants (Subpart LL) Part 60

In subpart LL, an error in the value of the particulate matter 

standard in §60.382(a)(1) would be corrected from 0.02 g/dscm to 0.05 
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g/dscm. An alternative procedure, where a single visible emission 

observer may conduct visible emission observations for up to three 

fugitive, stack, or vent emission points within a 15-second interval,

would be added to §60.386. This alternative would allow the observer 

to take readings in a more cost-effective and timely manner than 

currently allowed. 

M. Asphalt Processing and Asphalt Roofing Manufacture (Subpart UU) 

Part 60

In subpart UU, an error in the value of the particulate matter 

standard for saturated felt or smooth-surfaced roll roofing in 

§60.472(a)(1)(ii) would be corrected from 0.04 kg/Mg to 0.4 kg/Mg. 

N. Volatile Organic Compound (VOC) Emissions from Synthetic Organic 

Chemical Manufacturing Industry (SOCMI) Distillation Operations 

(Subpart NNN) Part 60

In subpart NNN, several paragraphs were renumbered in a previous 

amendment, but conforming changes in sections that referenced these 

paragraphs were not made. In §60.660(c)(4) and §60.665(h)(2) and (3), 

these references would be corrected. 

O. Stationary Compression Ignition Internal Combustion Engines 

(Subpart IIII) Part 60

In Subpart IIII, the use of Method 1 or 1A for sampling point 

selection would be dropped, and single-point sampling at the centroid 

of the exhaust would be added. The exhausts of most regulated engines 

are too small and not equipped with sampling ports. This makes it 

difficult to divide the exhaust into multiple sampling-point 
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locations as required by Methods 1 and 1A. Table 7 would be revised 

to delete the requirement to use Method 1 or 1A.

P. Stationary Spark Ignition Internal Combustion Engines (Subpart 

JJJJ) Part 60

In Subpart JJJJ, the exhausts of most regulated engines do not 

contain sampling ports and are too small to be subdivided into 

multiple sampling-point locations. Table 2 would be revised to delete 

the requirement to use Method 1 or 1A for determining sampling site 

and sampling-point location, and instruction would be added to sample 

at the centroid of the exhaust.

Q. Method 1 of Appendix A-1 of Part 60

In Method 1, Section 11.2.2 would be clarified to note that it

specifically applies to gaseous measurements. The provisions in the 

section for determining exhaust gas stratification would be 

streamlined to make them consistent with the new stratification 

provisions in Method 7E. Figures 1-1 and 1-2 would be clarified to 

note that the horizontal coordinates represent the duct diameters 

from the sampling point to the flow disturbance and not simply the 

duct diameters from the flow disturbance. Figure 1-2 would also be 

corrected to show the proper demarcation between the requirement for 

12 and 16 sampling points. The test for the presence or absence of 

cyclonic flow would be required for all tests instead of recommended

at sites suspected of having cyclonic flow.

R. Method 2 of Appendix A-1 of Part 60
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In Method 2, a pressure stability specification that has been 

lacking for the pitot tube leak-check would be added to clearly note 

the desired stability. An erroneous reference to a Figure 2-6B would 

be corrected to reference Figure 2-7B. An error in a term in the 

denominator of Equation 2-7 would be corrected to the average of the 

square root of delta P rather than the square root of the average 

delta P. The velocity constant in English units used in Equation 2-7

would be corrected by changing m/sec to ft/sec. The term for absolute 

temperature in Equations 2-7 and 2-8 would be corrected to represent 

the average of the absolute temperatures; an inadvertently omitted

term would be added to Section 12.1 for the average absolute 

temperature; and calibrating a barometer against a NIST-traceable 

barometer would be added as an alternative to calibrating against a 

mercury barometer to facilitate the use of mercury-free products.

S. Method 2A of Appendix A-1 of Part 60

In Method 2A, calibrating a barometer against a NIST-traceable 

barometer would be added as an alternative to calibrating against a 

mercury barometer to facilitate the use of mercury-free products.

T. Method 2B of Appendix A-1 of Part 60

In Method 2B, nomenclature errors would be corrected and the 

assumed ambient carbon dioxide concentration used in the calculations 

would be changed from 300 to 380 ppm to closer approximate current 

ambient levels.

U. Method 2D of Appendix A-1 of Part 60
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In Method 2D, calibrating a barometer against a NIST-traceable 

barometer would be added as an alternative to calibrating against a 

mercury barometer to facilitate the use of mercury-free products.

V. Method 3A of Appendix A-2 of Part 60

In Method 3A, a redundant sentence noting that pre-cleaned air 

may be used for the high-level calibration gas would be deleted.

W. Method 4 of Appendix A-3 of Part 60

In Method 4, the English value for the leak rate exceedance in 

Section 9.1 would be corrected from 0.20 cfm to 0.020 cfm. Method 6A, 

Method 320, and a calculation using F-factors would be added as 

alternatives to Method 4 for the moisture determination. These are 

logical alternatives in cases where Methods 6A and 320 are already 

being used, and the F-factors approach can save both time and 

expenses in some cases.

X. Method 5 of Appendix A-3 of Part 60

In Method 5, a clarification would be added that the deionized 

water used in the analysis of material caught in the impingers must 

have ≤0.001 percent residue; the factor K would be corrected to K' in 

Equation 5-13; calibrating a barometer against a NIST-traceable 

barometer would be added as an alternative to calibrating against a 

mercury barometer to facilitate the use of mercury-free products; 

calibrating a temperature sensor against a thermometer equivalent to 

a mercury-in-glass thermometer would be added as an alternative to 

calibrating against a mercury-in-glass thermometer to facilitate the 

use of mercury-free products; rechecking temperature sensors for the 
Page 18 of 181

filter holder and metering system after each test has been found to 

be sufficient and would replace having sensors calibrated within 3o 

F; the option to check the probe heater calibration after a test at a 

single point using a reference thermometer would be added; the use of 

weather station barometric pressure corrected to testing point 

elevation would be added as an option to having an on-site barometer; 

mention of stopcock grease for air-tight impinger seals would be 

deleted since it is outdated and not often used; a smaller acetone 

cleanup blank is determined sufficient and a single blank per 

container would be allowed in place of a blank from each wash bottle; 

Section 10.3.3 would be clarified as a post-test metering system 

calibration check rather than a metering system calibration, and an 

alternative metering check procedure would be added; the Isostack 

metering system would be noted as an acceptable system for 

determining sample flow rates; the use of a Teflon filter holder 

would be allowed without having to obtain the Administrator’s 

approval first; and Reference 13 for post-test calibration would be

added to the method.

Y. Method 5A of Appendix A-3 of Part 60

In Method 5A, mercury-free thermometers would be added as an 

alternative to mercury-in-glass thermometers to facilitate the use of 

mercury-free products.

Z. Method 5E of Appendix A-3 of Part 60

In Method 5E, the use of the Rosemount Model 2100A total organic 

content analyzer would be replaced with the Tekmar-Dohrmann or 
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equivalent analyzer, as neither the Rosemount analyzer nor any 

similar dual-injection analyzer is currently manufactured. Also, 

Section 12.5 inadvertently labels the equation for total particulate 

concentration as Eq. 5E-4, which would be corrected to Eq. 5E-5.

AA. Method 5H of Appendix A-3 of Part 60

In Method 5H, Section 12.1 would be revised to add missing terms 

Ci, Co, Qi, and Qo; and procedures for the determination of an 

alternative tracer gas flow rate would be added. 

BB. Method 6 of Appendix A-4 of Part 60

In Method 6, calibrating a temperature sensor against a 

thermometer equivalent to a mercury-in-glass thermometer would be

added as an alternative to using a mercury-in-glass thermometer, and 

calibrating a barometer against a NIST-traceable barometer would be

added as an alternative to calibrating against a mercury barometer.

These revisions would facilitate the use of mercury-free products.

CC. Method 6C of Appendix A-4 of Part 60

In Section 4.0 of Method 6C, an incorrect reference to Section 

4.1 of Method 6 would be corrected to reference Section 4.0 of Method 

7E. Provisions that were removed from the original method that 

addressed potential quenching effects in fluorescence analyzers would 

be added again. It was previously believed that current fluorescence 

analyzers are not affected by quenching effects; however, we were

informed that the provisions are still needed in many cases.

DD. Method 7 of Appendix A-4 of Part 60
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In Method 7, procedures would be added to avoid biased results 

when sampling under conditions of high SO2 concentrations; calibrating 

a barometer against a NIST-traceable barometer would be added as an 

alternative to calibrating against a mercury barometer; and 

calibrating a temperature sensor against a thermometer equivalent to 

a mercury-in-glass thermometer would be added as an alternative to 

using a mercury-in-glass thermometer. These revisions would 

facilitate the use of mercury-free products.

EE. Method 7A of Appendix A-4 of Part 60

In Method 7A, new procedures would be added to avoid biased 

results when sampling under conditions of high SO2 concentrations, and 

calibrating a temperature sensor against a thermometer equivalent to 

a mercury-in-glass thermometer would be added as an alternative to 

using a mercury-in-glass thermometer to facilitate the use of 

mercury-free products.

FF. Method 7E of Appendix A-4 of Part 60

In Method 7E, the instructions for choosing the high-level 

calibration gas would be clarified. Instructions would be added to 

minimize contact of the sample with any condensate to reduce the 

chance of sample loss, and an error in the traverse point locations 

used to determine stratification across large stacks would be

corrected. A statement noting that the stratification test is not 

required at sources with temporally varying emissions or lowconcentration emissions would be added since a stratification test 

under such conditions would be meaningless or difficult to pass. The 
Page 21 of 181

basis of a stable response for measurements in the system response 

time determination would be revised in Section 8.2.5 to conform with 

Section 8.2.6. The response time reading would be recorded after the 

concentration reading has reached 95 percent or within 0.5 ppm of a 

stable response for the gas instead of after reaching 95 percent of

the certified gas concentration. This change removes a potential 

conflict between the response time stable reading criterion and the 

bias or system calibration error test criterion. Alternative sampling 

bags made of materials other than Tedlar would be allowed if the 

materials are applicable for retaining the compounds of interest. 

Tedlar bags are no longer being produced.

GG. Method 8 of Appendix A-4 of Part 60

In Method 8, corrections would be made to errors in the sample 

aliquot volumes required for containers 1 and 2 and in the values for 

Va and Vsoln. Figure 8-1 would be clarified to identify which impingers 

collect sulfuric acid/sulfur trioxide and which collect sulfur 

dioxide.

HH. Method 10 of Appendix A-4 of Part 60

Method 10 would be revised to allow the use of sample tanks as 

an alternative to flexible bags for sample collection. Tanks are an 

acceptable collection medium, are currently allowed for carbon 

monoxide in other EPA methods, and are appropriate for Method 10 as 

well.

II. Methods 10A and 10B of Appendix A-4 of Part 60
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In Methods 10A and 10B, sampling bags made of materials other 

than Tedlar would be allowed if the materials have the sample 

retaining qualities of Tedlar. Tedlar bags are no longer produced.

JJ. Method 11 of Appendix A-5 of Part 60

Method 11 would be revised to address sample breakthrough at 

high concentrations. An additional collection impinger would be added 

to the train whenever the final impinger solution exhibits a yellow 

color. Calibrating a temperature sensor against a thermometer 

equivalent to a mercury-in-glass thermometer would be added as an 

alternative to using a mercury-in-glass thermometer to facilitate the 

use of mercury-free products.

KK. Method 12 of Appendix A-5 of Part 60

Method 12 would be revised to allow an analysis by inductively 

coupled plasma-atomic emission spectrometry (ICP-AES) or cold vapor 

atomic fluorescence spectrometry (CVAFS) as alternatives to atomic 

absorption (AA) analysis. The ICP-AES is currently an approved 

technique for lead analysis in Method 29, and CVAFS offers comparable 

sensitivity and precision to AA.

LL. Method 14A of Appendix A-5 of Part 60

In Section 10.1.1 of Method 14A, we inadvertently referenced 

Figure 5-6. This reference would be corrected to Figure 5-5.

MM. Method 16A of Appendix A-6 of Part 60

In Method 16A, the applicability section would note that method 

results may be biased low if used at sources other than kraft pulp 

mills where stack oxygen levels may be lower.
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NN. Method 18 of Appendix A-6 of Part 60

In Method 18, sampling bags made of materials other than Tedlar 

would be allowed if the materials are applicable for retaining the 

compounds of interest. Tedlar bags are no longer produced.

OO. Method 23 of Appendix A-7 of Part 60

In Method 23, the requirement in Section 2.2.7 that silica gel 

be stored in metal containers is unnecessary and would be deleted. 

Section 4.2.7 would be clarified to note that the used silica gel 

should be transferred to its original container or other suitable 

vessel if moisture is being determined. If moisture is not being 

determined, the spent silica gel may be discarded. Mercury-free 

thermometers would be added as an alternative to using mercury-inglass thermometers to facilitate the use of mercury-free products.

PP. Method 24 of Appendix A-7 of Part 60

Method 24 would be revised to cite only ASTM Method D2369 and 

not the specific sections of the method, since the section numbers 

may change with periodic updates.

QQ. Method 25 of Appendix A-7 of Part 60

In Method 25, more detailed information would be added to 

describe the filters used for sample collection.

RR. Method 25C of Appendix A-7 of Part 60

Method 25C would be revised to allow sampling lines made of 

Teflon. Probes that have closed points and are driven below surface 

in a single step and withdrawn at a distance to create a gas gap 

would be allowed as acceptable substitutes to using pilot probes and 
Page 24 of 181

the auger procedure. An equation for correcting the sample nitrogen

concentration for tank dilution would be added as a supplemental 

calculation option.

SS. Method 25D of Appendix A-7 of Part 60

In Method 25D, errors in cross-references within the method would 

be corrected.

TT. Method 26 of Appendix A-8 of Part 60

Method 26 would be revised to allow the use of heated Teflon 

probes in place of glass-lined probes. Conflicting temperature 

requirements for the sampling system would be clarified. The note to 

keep the probe and filter temperature at least 20C above the source 

temperature would be removed because the specification is not needed 

at higher temperature stacks. The location of the thermocouple that 

monitors the collected gas temperature would be clarified as being in 

the gas stream, not the filter box. Method 26A would be an acceptable

alternative to Method 26 since the methods are fundamentally similar 

and give comparable results when determining non-particulate hydrogen 

halides.

UU. Method 29 of Appendix A-8 of Part 60

Method 29 would be revised to allow samples to be analyzed by 

CVAFS as an alternative to AA analysis since CVAFS is as sensitive 

and precise as AA.

VV. Method 30B of Appendix A-8 of Part 60
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In Method 30B, calibrating a barometer against a NIST-traceable 

barometer would be added as an alternative to calibrating against a 

mercury barometer to facilitate the use of mercury-free products.

WW. Performance Specification 1 of Appendix B of Part 60

In Performance Specification 1, the terms “full scale” and 

“span” would be noted as having the same meaning.

XX. Performance Specification 3 of Appendix B of Part 60

In Performance Specification 3, a statement that allows the 

relative accuracy to be within 20 percent of the reference method 

would be added to establish the original intent of the rule. This 

statement was inadvertently deleted in a previous amendment.

YY. Performance Specification 4 of Appendix B of Part 60

Performance Specification 4 would be revised to remove the 

required use of the interference trap specified in Method 10 when 

evaluating non-dispersive infrared continuous emission monitoring 

systems against Method 10. This is an old requirement, and the trap 

is not needed with modern analyzers.

ZZ. Performance Specification 4B of Appendix B of Part 60

Performance Specification 4B would be clarified to note that 

Equation 1 in Section 7.1.1 for calculating calibration error only 

applies to the carbon monoxide monitor and not the oxygen monitor. It 

would be noted for the oxygen monitor that the calibration error 

should be expressed as the oxygen concentration difference between 

the mean monitor and reference value at three levels.
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AAA. Performance Specification 7 of Appendix B of Part 60

Performance Specification 7 would be revised to allow Methods 15 

and 16 as reference methods in addition to Method 11. Methods 15 and 

16 are approved for determining hydrogen sulfide and are appropriate 

for this application. Methods 15 and 16 are approved EPA reference 

methods for a number of sources. A pertinent reference would also be 

added to the references section. 

BBB. Performance Specification 11 of Appendix B of Part 60

In Performance Specification 11, errors in the denominators of 

Equations 11-1 and 11-2 would be corrected. 

CCC. Performance Specification 15 of Appendix B of Part 60

In Performance Specification 15, the general references to 40 

CFR part 60, Appendix B for the relative accuracy analysis procedure 

would specifically cite Performance Specification 2 of 40 CFR part 

60, Appendix B. 

DDD. Performance Specification 16 of Appendix B of Part 60

Performance Specification 16 would be clarified to answer 

questions that have arisen since its publication. Retesting a 

predictive emission monitoring system (PEMS) after a sensor is 

replaced would be explained more clearly. Allowances would be made 

for relative accuracy testing at three load or production rate levels 

in cases where the key operating parameter could not be readily 

altered. Additional instruction would be added for performing the 

relative accuracy audit (RAA). An error in the RAA acceptance 

criterion would be corrected, and an alternative acceptance criterion 
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for low concentration measurements would be added. The yearly 

relative accuracy test audit would clearly note that the statistical 

tests in Section 8.3 are not required. An incorrect reference to 

Equation 16-4 in Section 12.4 would be corrected. 

EEE. Procedure 1 of Appendix F of Part 60

In Procedure 1, the relevant performance specification would be 

cited for the RAA calculation instead of using the current Equation 

1-1 which is not appropriate for all pollutants.

FFF. Procedure 2 of Appendix F of Part 60

In Procedure 2, Equations 2-2 and 2-3 would be revised to have

the full-scale value in the denominator, which is more appropriate 

than the up-scale check value. The denominator of equation 2-4 would 

be revised to include the volume of the reference device rather than 

the full-scale value. These revisions reflect the original intent of 

the rule.

GGG. Procedure 5 of Appendix F of Part 60

In Procedure 5, the second section listed as Section 6.2.6 would 

be correctly numbered as Section 6.2.7.

HHH. General Provisions (Subpart A) Part 61

In the General Provisions of part 61, Methods 3A and 19 would be 

added to the list of methods not requiring the use of audit samples 

in §61.13(e). These methods were inadvertently omitted in the 

original rule.
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III. Beryllium (Subpart C) Part 61

In the beryllium National Emission Standards for Hazardous Air 

Pollutants (NESHAP), Method 29 of part 60 would be added as an 

alternative to Method 104 in §61.33(a) for emissions testing since

Method 29 is used to determine beryllium under other rules and is 

appropriate for this subpart as well.

JJJ. Beryllium Rocket Motor Firing (Subpart D) Part 61

In the beryllium rocket motor firing NESHAP, a conversion error 

in the emission standard in §61.42(a) would be corrected.

KKK. Mercury (Subpart E) Part 61

In the mercury NESHAP, Method 29 of part 60 would be added as an 

alternative to Method 101A in §61.53(d)(2) for emissions testing

since Method 29 is used to determine mercury under other rules and is 

appropriate for this subpart as well.

LLL. Inorganic Arsenic Emissions From Glass Manufacturing Plants 

(Subpart N) Part 61

In the glass manufacturing plants NESHAP, Method 29 in Appendix 

A of part 60 would be added as an alternative to Method 108 in 

§61.164(d)(2)(i) for determining the arsenic emissions rate and in 

§61.164(e)(1)(i) and (e)(2) for determining the arsenic concentration 

in a gas stream. Method 29 is used to determine arsenic under other 

rules and is appropriate for this subpart as well.

MMM. Method 101 of Appendix B of Part 61

Method 101 would be revised to allow analysis by ICP-AES or 

CVAFS as alternatives to AA analysis. These techniques are allowed 
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for determining mercury in other approved methods and are appropriate 

for Method 101 as well. They were not available when Method 101 was 

promulgated.

NNN. Method 101A of Appendix B of Part 61

Method 101A would be revised to allow analysis by ICP-AES or 

CVAFS as alternatives to AA analysis. These techniques are allowed 

for determining mercury in other approved methods and are appropriate 

for Method 101A as well. They were not available when Method 101A was 

promulgated.

OOO. Method 102 of Appendix B of Part 61

In Method 102, mercury-free thermometers would be allowed in 

place of mercury-in-glass thermometers to facilitate the use of 

mercury-free products.

PPP. Method 104 of Appendix B of Part 61

Method 104 would be revised to allow analysis by ICP-AES as an 

alternative to AA analysis. This new technique is acceptable for

measuring beryllium and was not available when Method 104 was 

promulgated. A new alternative procedures section would be added to 

address ICP-AES. 

QQQ. Methods 108 and 108A of Appendix B of Part 61

Methods 108 and 108A would be revised to allow analysis by ICPAES as an alternative to AA analysis. This new technique is 

acceptable for measuring arsenic and was not available when Methods 

108 and 108A were promulgated. A new alternative procedures section 

would be added to address ICP-AES. 
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RRR. General Provisions (Subpart A) Part 63

In the General Provisions of part 63, Methods 3A and 19 would be 

added to the list of methods not requiring the use of audit samples

in §63.7(c). These were inadvertent omissions of the original rule. 

In §63.8(f)(6)(iii), an incorrect reference to a section of 

Performance Specification 2 would be corrected.

SSS. Synthetic Organic Chemical Manufacturing Industry (Subpart G) 

Part 63

Subpart G would be revised to allow the use of Method 8260B in 

the SW-846 Compendium of Methods or Method 316 to determine hazardous 

air pollutant concentrations in wastewater streams in 

§63.144(b)(5)(i). Both methods are appropriate for this application 

but were not considered during the original rule development.

TTT. Chromium Emissions From Hard and Decorative Chromium 

Electroplating and Chromium Anodizing Tanks (Subpart N) Part 63

South Coast Air Quality Management District Method 205.1 would 

be added as a testing option for measuring total chromium. Method 

205.1 is appropriate for this application, but its application to 

this rule was not considered during the original rule development.

UUU. Ethylene Oxide Emissions Standards for Sterilization Facilities 

(Subpart O) Part 63 

The ethylene oxide emissions standards for sterilization 

facilities NESHAP would be revised to allow California Air Resources 
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Board (CARB) Method 431 as an alternative to the procedures in 

§63.365(b) for determining efficiency at the sterilization chamber 

vent. Method 431 is appropriate for this application but was not 

considered during the original rule development. An error in a 

reference to a section in Performance Specification 8 would also be 

corrected.

VVV. Marine Tank Vessel Loading Operations (Subpart Y) Part 63

The marine tank vessel loading operations NESHAP would be

revised to allow Method 25B as an alternative to Method 25A in 

§63.565(d)(5) for determining the average volatile organic compound 

(VOC) concentration upstream and downstream of recovery devices. 

Method 25B would be allowed as an alternative to Methods 25 and 25A 

for determining the percent reduction in VOC in §63.565(d)(8), and 

the requirement that Method 25B be validated according to Method 301 

in §63.565(d)(10) would be added. Method 25B would also be added as 

an alternative to Method 25A in determining the baseline outlet VOC 

concentration in §63.565(g). Method 25B uses a different detector 

than Method 25A but gives comparable results to Method 25A in these 

applications. 

WWW. Aerospace Manufacturing and Rework Facilities (Subpart GG) Part 

63

The aerospace manufacturing and rework facilities NESHAP would 

be revised to remove an incorrect reference to the location of Method 

319 in §63.750(o).

XXX. Pharmaceuticals Production (Subpart GGG) Part 63 
Page 32 of 181

The pharmaceuticals production NESHAP would be revised to allow 

Method 320 as an alternative to Method 18 for demonstrating that a 

vent is not a process vent. Method 320 is a broadly applicable method 

that is acceptable in this application because it is self-validating.

YYY. Secondary Aluminum Production (Subpart RRR) Part 63 

The secondary aluminum production NESHAP would be revised to 

allow Method 26 as an alternative to Method 26A in §63.1511(c)(9) for 

determining hydrochloric acid (HCl) concentration. Method 26 is the 

non-isokinetic version of Method 26A and is being allowed in all 

cases where non-isokinetic sampling for HCl is performed.

ZZZ. Manufacturing of Nutritional Yeast (Subpart CCCC) Part 63

Table 2 in the manufacturing of nutritional yeast NESHAP would 

be revised to delete the requirements to use Methods 1, 2, 3, and 4 

when measuring VOC by Method 25A. Methods 1, 2, 3, and 4 are required 

for particulate matter sampling and the VOC in this application is 

normally not particulate in nature.

AAAA. Petroleum Refineries: Catalytic Cracking Units, Catalytic 

Reforming Units, and Sulfur Recovery Units (Subpart UUUU) Part 63

Table 4 in the petroleum refineries: catalytic cracking units, 

catalytic reforming units, and sulfur recovery units NESHAP would be

revised to allow Method 320 as an alternative to Method 18 for 

determining control device efficiency for organic compounds. Method 
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320 is a broadly applicable method that is acceptable in this 

application because it is self-validating.

BBBB. Stationary Reciprocating Internal Combustion Engines (Subpart 

ZZZZ) Part 63

Table 4 in the stationary reciprocating internal combustion 

engines NESHAP would be revised to clarify that a heated probe is not 

necessary when using ASTM D6522 to measure oxygen or carbon dioxide 

concentrations because condensed moisture is normally not an 

interferent to these compounds. The requirement to use Method 1 or 1A 

for sampling site and sampling point location would be deleted

because the exhausts are small and have temporally varying emissions. 

Instruction would be added to sample at the centroid of the stack.

CCCC. Method 306 of Appendix A of Part 63

Method 306 would be revised to remove references to two figures 

that do not exist and to add clarifying information about the 

conditions under which ICP is appropriate for sample analysis. 

Alternative mercury-free thermometers also would be added as 

alternatives to mercury-in-glass thermometers to facilitate the use 

of mercury-free products.

DDDD. Method 306A of Appendix A of Part 63

In Method 306A, information would be added to clarify the 

conditions under which sample filtering is required. 

EEEE. Methods 308, 315, and 316 of Appendix A of Part 63

In Methods 308, 315, and 316, calibrating a temperature sensor 

against a thermometer equivalent to a mercury-in-glass thermometer 
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would be added as an alternative to mercury-in-glass thermometers to 

facilitate the use of non-mercury products. Alternative mercury-free 

thermometers would be added as an alternative to using a mercury-inglass thermometers.

FFFF. Method 321 of Appendix A of Part 63

In Method 321, the term for dilution factor in the calculations 

would be clarified.

IV. Request for Comments

The Agency is reviewing the adequacy of its current test methods 

in regard to sampling site selection and sampling point requirements. 

Emission gas flow patterns affect representative testing, and this is 

not addressed in many EPA test methods. Method 1 contains provisions 

for sampling point locations, traversing, and determination of 

cyclonic flow, and Method 7E was revised to contain procedures for 

determining gaseous stratification in 2006. However, there are no 

requirements in most methods to follow the Method 1 or 7E procedures. 

Method 7E allows stratification to be assessed through either a 

3- or 12-point traverse while measuring variations in either a 

pollutant or diluent concentration. The degree of stratification 

determines whether a single-point, 3-, or 12-point traverse is used

for the test. There are no requirements to check for cyclonic flow in 

Method 7E.

We have information that suggests deficiencies exist in the 3-

point test in a number of cases and that at least a 5-point, dual 

axis test should be required. A summary of this information has been 
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included in the regulatory docket. We are also reconsidering the 

appropriateness of a diluent gas for the test instead of the 

regulated pollutant.

In this proposed rule, we would update the General Provisions of 

Parts 60, 61, and 63 to include evaluations of gas stratification and 

cyclonic flow with all compliance tests. The Agency solicits your 

comments and data to aid in establishing effective and equitable 

procedures.

V. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review and 

Executive Order 13563: Improving Regulation and Regulatory Review

This action is not a "significant regulatory action" under the 

terms of Executive Order (EO) 12866 (58 FR 51735, October 4, 1993) 

and is therefore not subject to review under Executive Orders 12866 

and 13563 (76 FR 3821, January 21, 2011). 

B. Paperwork Reduction Act

This action does not impose an information collection burden 

under the provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 

et seq. Burden is defined at 5 CFR 1320.3(b). The amendments being 

proposed in this action to the test methods and testing regulations 

do not add information collection requirements but make needed 

corrections and updates to existing testing methodology.

C. Regulatory Flexibility Act

The Regulatory Flexibility Act (RFA) generally requires an agency 

to prepare a regulatory flexibility analysis of any rule subject to 
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notice and comment rulemaking requirements under the Administrative 

Procedure Act or any other statute unless the agency certifies that 

the rule will not have a significant economic impact on a substantial 

number of small entities. Small entities include small businesses, 

small organizations, and small governmental jurisdictions.

For purposes of assessing the impacts of this rule on small 

entities, small entity is defined as (1) a small business as defined 

by the Small Business Administration’s (SBA) regulations at 13 CFR 

121.201; (2) a small governmental jurisdiction that is a government 

of a city, county, town, school district or special district with a 

population of less than 50,000; and (3) a small organization that is 

any not-for-profit enterprise which is independently owned and 

operated and is not dominant in its field. 

After considering the economic impacts of this rule on small 

entities, I certify that this action will not have a significant 

economic impact on a substantial number of small entities. This 

proposed rule will neither impose emission measurement requirements 

beyond those specified in the current regulations, nor will it change 

any emission standard. As such, it will not present a significant 

economic impact on small entities.

D. Unfunded Mandates Reform Act

This action contains no federal mandates under the provisions of 

Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), 2 U.S.C. 

1531-1538 for State, local, or tribal governments or the private 

sector. The action imposes no enforceable duty on any State, local or 
Page 37 of 181

tribal governments or the private sector. Therefore, this action is 

not subject to the requirements of sections 202 or 205 of the UMRA.

This action is also not subject to the requirements of section 203 of 

UMRA because it contains no regulatory requirements that might 

significantly or uniquely affect small governments. This action 

corrects and updates current testing regulations and does not add any 

new requirements. 

E. Executive Order 13132: Federalism

This action does not have federalism implications. It will not 

have substantial direct effects on the States, on the relationship 

between the national government and the States, or on the 

distribution of power and responsibilities among the various levels 

of government, as specified in Executive Order 13132. This action 

simply corrects minor errors and makes updates to current source 

testing methods to maintain their original intent. Thus, Executive 

Order 13132 does not apply to this action. In the spirit of Executive 

Order 13132, and consistent with the EPA policy to promote 

communications between the EPA and State and local governments, the 

EPA specifically solicits comment on this proposed rule from State 

and local officials. 

F. Executive Order 13175: Consultation and Coordination with Indian 

Tribal Governments

This action does not have tribal implications, as specified in 

Executive Order 13175 (65 FR 67249, November 9, 2000). This proposed 

rule imposes no requirements on tribal governments. This action 
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simply corrects and updates current testing regulations. Thus, 

Executive Order 13175 does not apply to this action. The EPA 

specifically solicits additional comment on this proposed action from 

tribal officials.

G. Executive Order 13045: Protection of Children from Environmental 

Health and Safety Risks

The EPA interprets EO 13045 (62 F.R. 19885, April 23, 1997) as 

applying only to those regulatory actions that concern health or 

safety risks, such that the analysis required under section 5-501 of 

the EO has the potential to influence the regulation. This action is 

not subject to EO 13045 because it does not establish an 

environmental standard intended to mitigate health or safety risks.

H. Executive Order 13211: Actions Concerning Regulations That 

Significantly Affect Energy Supply, Distribution, or Use

This action is not subject to Executive Order 13211 (66 FR 28355 

(May 22, 2001)), because it is not a significant regulatory action 

under Executive Order 12866.

I. National Technology Transfer and Advancement Act

Section 12(d) of the National Technology Transfer and Advancement 

Act of 1995 (“NTTAA”), Public Law No. 104-113 (15 U.S.C. 272 note) 

directs the EPA to use voluntary consensus standards in its 

regulatory activities unless to do so would be inconsistent with 

applicable law or otherwise impractical. Voluntary consensus 

standards are technical standards (e.g., materials specifications, 

test methods, sampling procedures, and business practices) that are 
Page 39 of 181

developed or adopted by voluntary consensus standards bodies. NTTAA 

directs the EPA to provide Congress, through OMB, explanations when 

the Agency decides not to use available and applicable voluntary 

consensus standards.

This proposed rulemaking involves technical standards. The EPA 

proposes to use ASTM D975-076, developed and adopted by the American 

Society for Testing and Materials (ASTM). This standard may be 

obtained from ASTM at 100 Barr Harbor Drive, P.O. Box C700, West 

Conshohocken, PA 19428-2959. ASTM D975-076 has been determined to be 

at least as stringent as currently required ASTM D396 for defining 

“distillate oil.” ASTM D975-076 is required in some State permits for 

this purpose and end users have asked that it be allowed as an 

alternative to D396 under 40 CFR 60.41c.

J. Executive Order 12898: Federal Actions to Address Environmental 

Justice in Minority Populations and Low-Income Populations

Executive Order (EO) 12898 (59 FR 7629 (Feb. 16, 1994)) 

establishes federal executive policy on environmental justice. Its 

main provision directs federal agencies, to the greatest extent 

practicable and permitted by law, to make environmental justice part 

of their mission by identifying and addressing, as appropriate, 

disproportionately high and adverse human health or environmental 

effects of their programs, policies, and activities on minority 

populations and low-income populations in the United States. 

The EPA has determined that this proposed rule will not have 

disproportionately high and adverse human health or environmental 
Page 40 of 181

effects on minority or low-income populations because it does not 

affect the level of protection provided to human health or the 

environment. This rule corrects and updates current testing 

regulations and does not cause emission increases from regulated 

sources.
Page 41 of 181

Revisions to Test Methods and Testing Regulations

Page 41 of 181

List of Subjects in 40 CFR Parts 51, 60, 61, and 63

Environmental protection, Air pollution control, Test methods 

and procedures, and Performance specifications.

Dated:

Lisa P. Jackson,

Administrator.
Page 42 of 181

For the reasons stated in the preamble, the Environmental 

Protection Agency proposes to amend title 40, chapter I of the Code 

of Federal Regulations as follows:

PART 51 – REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF 

IMPLEMENTATION PLANS

1. The authority citation for part 51 continues to read as 

follows:

Authority: 42 U.S.C. 7401, et. seq.

2. In Appendix M by revising Section 4(a) of the introduction 

to read as follows:

Appendix M to Part 51—Recommended Test Methods for State 

Implementation Plans

4. * * *

a. The source owner, operator, or representative of the tested 

facility shall obtain an audit sample, if commercially available, 

from an AASP for each test method used for regulatory compliance 

purposes. No audit samples are required for the following test 

methods: Methods 3A and 3C of Appendix A-3 of Part 60, Methods 6C, 

7E, 9, and 10 of Appendix A-4 of Part 60, Methods 18 and 19 of 

Appendix A-6 of Part 60, Methods 20, 22, and 25A of Appendix A-7 of 

Part 60, and Methods 303, 318, 320, and 321 of Appendix A of Part 63. 

If multiple sources at a single facility are tested during a 

compliance test event, only one audit sample is required for each 

method used during a compliance test. The compliance authority 

responsible for the compliance test may waive the requirement to 
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include an audit sample if they believe that an audit sample is not 

necessary. “Commercially available” means that two or more 

independent AASPs have blind audit samples available for purchase. If 

the source owner, operator, or representative cannot find an audit 

sample for a specific method, the owner, operator, or representative 

shall consult the EPA Web site at the following URL, 

http://www.epa.gov/ttn/emc, to confirm whether there is a source that 

can supply an audit sample for that method. If the EPA Web site does 

not list an available audit sample at least 60 days prior to the 

beginning of the compliance test, the source owner, operator, or 

representative shall not be required to include an audit sample as 

part of the quality assurance program for the compliance test. When 

ordering an audit sample, the source owner, operator, or 

representative shall give the sample provider an estimate for the 

concentration of each pollutant that is emitted by the source or the 

estimated concentration of each pollutant based on the permitted 

level and the name, address, and phone number of the compliance 

authority. The source owner, operator, or representative shall report 

the results for the audit sample along with a summary of the emission 

test results for the audited pollutant to the compliance authority 

and shall report the results of the audit sample to the AASP. The 

source owner, operator, or representative shall make both reports at 

the same time and in the same manner or shall report to the 

compliance authority first and report to the AASP. If the method 

being audited is a method that allows the samples to be analyzed in 
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the field and the tester plans to analyze the samples in the field, 

the tester may analyze the audit samples prior to collecting the 

emission samples provided a representative of the compliance 

authority is present at the testing site. The tester may request and 

the compliance authority may grant a waiver to the requirement that a 

representative of the compliance authority must be present at the 

testing site during the field analysis of an audit sample. The source 

owner, operator, or representative may report the results of the 

audit sample to the compliance authority and then report the results 

of the audit sample to the AASP prior to collecting any emission 

samples. The test protocol and final test report shall document 

whether an audit sample was ordered and utilized and the pass/fail 

results as applicable.

* * * * *

3. In Method 201A of Appendix M by revising Sections 8.3.4(b), 

8.3.4.1, 8.7.2.2, 8.7.5.5(a), the introductory paragraph of Section 

10.1, Sections 10.1.3, 11.2.1, Equation 9 in Section 12.5, and by 

deleting Section 10.5 and the term “Vb” and its definition from 

Section 12.1 to read as follows:

Method 201A — Determination of PM10 and PM2.5 Emissions from Stationary 

Sources (Constant Sampling Rate Procedure)

* * * * *

8.3.4 * * * 

(b) The appropriate nozzle to maintain the required gas sampling 

rate for the velocity pressure range and isokinetic range. If the 
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isokinetic range cannot be met (e.g., batch processes, extreme 

process flow or temperature variation), void the sample or use 

methods subject to the approval of the Administrator to correct the 

data. The acceptable variation from isokinetic sampling is 80 to 120 

percent and no more than 100 ± 21 percent (2 out of 12 or 5 out of 

24) sampling points outside of this criteria. 

* * * * *

8.3.4.1 Preliminary traverse. You must use an S-type pitot 

tube with a conventional thermocouple to conduct the traverse. 

Conduct the preliminary traverse as close as possible to the 

anticipated testing time on sources that are subject to hour-by-hour 

gas flow rate variations of approximately ± 20 percent and/or gas 

temperature variations of approximately ± 10°C (± 18°F). (Note: You 

should be aware that these variations can cause errors in the cyclone 

cut diameters and the isokinetic sampling velocities.)

* * * * *

8.7.2.2 Probe blockage factor. You must use Equation 26 to 

calculate an average probe blockage correction factor (bf) if the 

diameter of your stack or duct is between 25.7 and 36.4 inches for 

the combined PM2.5/PM10 sampling head and pitot and between 18.8 and 

26.5 inches for the PM2.5 cyclone and pitot. A probe blockage factor is 

calculated because of the flow blockage caused by the relatively 

large cross-sectional area of the cyclone sampling head, as discussed 

in Section 8.3.2.2 and illustrated in Figures 8 and 9 of Section 17. 

You must determine the cross-sectional area of the cyclone head you 
Page 46 of 181

use and determine its stack blockage factor. (Note: Commerciallyavailable sampling heads (including the PM10 cyclone, PM2.5 cyclone, 

pitot and filter holder) have a projected area of approximately 31.2 

square inches when oriented into the gas stream. As the probe is 

moved from the outermost to the innermost point, the amount of 

blockage that actually occurs ranges from approximately 13 square 

inches to the full 31.2 inches plus the blockage caused by the probe 

extension. The average cross-sectional area blocked is 22 square 

inches.

* * * * *

8.7.5.5 * * *

(a) Container #1, Less than or equal to PM 2.5 micrometer 

filterable particulate. Use tweezers and/or clean disposable surgical 

gloves to remove the filter from the filter holder. Place the filter 

in the Petri dish that you labeled with the test identification and 

Container #1. Using a dry brush and/or a sharp-edged blade, carefully 

transfer any PM and/or filter fibers that adhere to the filter holder 

gasket or filter support screen to the Petri dish. Seal the 

container. This container holds particles less than or equal to 2.5 

micrometers that are caught on the in-stack filter. (Note: If the 

test is conducted for PM10 only, then Container #1 would be for less 

than or equal to PM10 micrometer filterable particulate.)

* * * * *

10.1 Gas Flow Velocities. You must use an S-type pitot tube 

that meets the required EPA specifications (EPA Publication 600/4–77–
Page 47 of 181

0217b) during these velocity measurements. (Note: If, as specified in 

Section 8.7.2.3, testing is performed in stacks less than 26.5 inches 

in diameter, testers may use a standard pitot tube according to the 

requirements in Method 1 or 2 of appendix A–3 to part 60.) You must 

also complete the following:

* * * * *

11.2.1 Container #1, Less than or Equal to PM2.5 Micrometer 

Filterable Particulate. Transfer the filter and any loose particulate 

from the sample container to a tared weighing dish or pan that is 

inert to solvent or mineral acids. Desiccate for 24 hours in a 

desiccator containing anhydrous calcium sulfate. Weigh to a constant 

weight and report the results to the nearest 0.1 mg. (See Section 3.0 

for a definition of constant weight.) If constant weight requirements 

cannot be met, data should be reported and flagged as a minimum 

value. (Note: Regardless of the stack temperature, you are not 

required to speciate the Method 201A nozzle, front half or in-stack 

filter sample into organic and inorganic fractions. Neither Method 17 

nor 201A require separate analysis of the filter for inorganic and 

organic PM. Since the in-stack filter samples collected at ≤ 30C (85 

F) may include both filterable insoluble particulate and condensable 

particulate, the filter should be weighed after desiccation but not 

extracted since insoluble particulate will not be recovered from the 

extraction.)

* * * * *
Page 48 of 181

12.5 * * *

For Nre greater than or equal to 3,162:







































D

1

T

P M

C

μ

Q = 0.07657

50

1.241

s

S W

0.3795

IV 0.6205 (Eq. 9)

* * * * *

4. In Method 202 of Appendix M by revising the introductory 

paragraph in Section 8.5.3.1, Section 11.2.2, and Figures 2, 3, 4, 5, 

and 6 in Section 18.0 to read as follows:

Method 202 — Determination of PM10 and PM2.5 Emissions from Stationary 

Sources (Constant Sampling Rate Procedure)

* * * * *

8.5.3.1 If you choose to conduct a pressurized nitrogen purge 

on the complete CPM sampling train, you may quantitatively transfer 

the water collected in the condenser and the water dropout impinger 

to the backup impinger as an alternative to replacing the short stem 

impinger insert with a long stem insert prior to purging the sampling 

train. You must measure the water combined in the backup impinger and 

record the volume or weight as part of the moisture collected during 

sampling as specified in Section 8.5.3.4. 

* * * * * 

11.2.2 CPM Container #1, Aqueous Liquid Impinger Contents. 

Analyze the water soluble CPM in Container #1 as described in this 

section. Place the contents of Container #1 into a separatory 

funnel. Add approximately 30 ml of hexane to the funnel, mix well, 
Page 49 of 181

and pour off the upper organic phase. Repeat this procedure twice 

with 30 ml of hexane each time combining the organic phase from each 

extraction. Each time, leave a small amount of the organic/hexane 

phase in the separatory funnel, ensuring that no water is collected 

in the organic phase. This extraction should yield about 90 ml of 

organic extract. Combine the organic extract from Container #1 with 

the organic train rinse in Container #2.
Page 50 of 181

Figure 2. Nitrogen Purge Train Configuration (Vacuum Purge)

Water Bath

(<20 to 30 C / 68 to 85 F)

C

ond

ens

er

Therm

o

c

ouple

C

ond

ens

e

d

M

oisture

and

S

a

m

ple

Silic

a

G

el

(~

3

0

0

gra

m

s)

R

e

circulation

Pum

p

T

e

m

p

erature

S

ens

or

Ice Bath

U

HP

nitrogen or equivalent

Filter

O

O

Regulator

Use inline rotameter

when

pulling purge nitrogen

through the system

(excess flow rate)

Orifice

Manometer

Dry Gas

Meter

By-Pass

Valve

Pump

Main

Valve

Vacuum

Gauge

Vacuum

Line
Page 51 of 181

Figure 3. Nitrogen Purge Train Configuration (Pressure Purge) 

* * * * *

Water

Bath

(20 to 30 C / 68 to 85 F)

C

o

n

d

e

n

s

er

T

h

erm

o

c

o

u

ple

R

e

circ

ulatio

n

P

u

m

p

U

H

P

nitrogen or

equiv

alent

Filter

O

O

Use when pushing purge

nitrogen

through the system

(flow rate 14 lpm or H

@)

R

e

g

ulator

C

o

n

d

e

n

s

e

d

M

oisture

a

n

d

S

a

m

ple
Page 52 of 181
Page 53 of 181
Page 54 of 181
Page 55 of 181

Part 60 – STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES

1. The authority citation for part 60 continues to read as 

follows:

Authority: 42 U.S.C. 7401, et. seq.

§60.8 [Amended]

2. By revising §60.8(g)(1) and adding new paragraphs (h) and 

(i) to read as follows:

§60.8 Performance tests.

* * * * *

(g) * * *

(1) The source owner, operator, or representative of the tested 

facility shall obtain an audit sample, if commercially available, 

from an AASP for each test method used for regulatory compliance 

purposes. No audit samples are required for the following test 

methods: Methods 3A and 3C of Appendix A-3 of Part 60, Methods 6C, 

7E, 9, and 10 of Appendix A-4 of Part 60, Methods 18 and 19 of 

Appendix A-6 of Part 60, Methods 20, 22, and 25A of Appendix A-7 of 

Part 60, and Methods 303, 318, 320, and 321 of Appendix A of Part 63.

If multiple sources at a single facility are tested during a 

compliance test event, only one audit sample is required for each 

method used during a compliance test. The compliance authority 

responsible for the compliance test may waive the requirement to 

include an audit sample if they believe that an audit sample is not 

necessary. “Commercially available” means that two or more 
Page 56 of 181

independent AASPs have blind audit samples available for purchase. If 

the source owner, operator, or representative cannot find an audit 

sample for a specific method, the owner, operator, or representative 

shall consult the EPA web site at the following URL, 

www.epa.gov/ttn/emc, to confirm whether there is a source that can 

supply an audit sample for that method. If the EPA web site does not 

list an available audit sample at least 60 days prior to the 

beginning of the compliance test, the source owner, operator, or 

representative shall not be required to include an audit sample as 

part of the quality assurance program for the compliance test. When 

ordering an audit sample, the source owner, operator, or 

representative shall give the sample provider an estimate for the 

concentration of each pollutant that is emitted by the source or the 

estimated concentration of each pollutant based on the permitted 

level and the name, address, and phone number of the compliance 

authority. The source owner, operator, or representative shall report 

the results for the audit sample along with a summary of the emission 

test results for the audited pollutant to the compliance authority 

and shall report the results of the audit sample to the AASP. The 

source owner, operator, or representative shall make both reports at 

the same time and in the same manner or shall report to the 

compliance authority first and then report to the AASP. If the method 

being audited is a method that allows the samples to be analyzed in 

the field and the tester plans to analyze the samples in the field, 

the tester may analyze the audit samples prior to collecting the 
Page 57 of 181

emission samples provided a representative of the compliance 

authority is present at the testing site. The tester may request, and 

the compliance authority may grant, a waiver to the requirement that 

a representative of the compliance authority must be present at the 

testing site during the field analysis of an audit sample. The source 

owner, operator, or representative may report the results of the 

audit sample to the compliance authority and report the results of 

the audit sample to the AASP prior to collecting any emission 

samples. The test protocol and final test report shall document 

whether an audit sample was ordered and utilized and the pass/fail 

results as applicable.

* * * * *

(h) Unless otherwise specified in the applicable subpart, each 

test location must be verified to be free of cyclonic flow and 

evaluated for the existence of emission gas stratification and the 

required number of sampling traverse points. If other procedures are 

not specified in the applicable subpart to the regulations, use the 

appropriate procedures in Method 1 to check for cyclonic flow and 

Method 7E to evaluate emission gas stratification and selection of 

sampling points. 

(i) Whenever the use of multiple calibration gases is required 

by a test method, performance specification, or quality assurance 

procedure in a part 60 standard or appendix, Method 205 of 40 CFR 

Part 51, Appendix M, “Verification of Gas Dilution Systems for Field 

Instrument Calibrations,” may be used.
Page 58 of 181

* * * * *

§60.13 [Amended]

3. By revising §60.13(d)(1) as follows: 

§60.13 Monitoring requirements.

* * * * *

(d)(1) Owners and operators of a CEMS installed in accordance 

with the provisions of this part, must check the zero (or low level 

value between 0 and 20 percent of span value) and span (50 to 100 

percent of span value) calibration drifts at least once daily in 

accordance with a written procedure. The zero and span must, at a 

minimum, be adjusted whenever either the 24-hour zero drift or the 

24-hour span drift exceeds two times the limit of the applicable 

performance specification in Appendix B of this part. The system must 

allow the amount of the excess zero and span drift to be recorded and 

quantified whenever specified. Owners and operators of a COMS 

installed in accordance with the provisions of this part must check 

the zero and upscale (span) calibration drifts at least once daily. 

For a particular COMS, the acceptable range of zero and upscale 

calibration materials is defined in the applicable version of PS–1 in 

Appendix B of this part. For a COMS, the optical surfaces, exposed to 

the effluent gases, must be cleaned before performing the zero and 

upscale drift adjustments, except for systems using automatic zero 

adjustments. The optical surfaces must be cleaned when the cumulative 

automatic zero compensation exceeds 4 percent opacity.

* * * * *
Page 59 of 181

§60.17 [Amended]

4. By revising §60.17(e) and (e)(1) as follows:

§60.17 Incorporations by reference.

* * * * *

(e) The following material is available for purchase from the 

Water Environment Federation, 2626 Pennsylvania Avenue N.W., 

Washington, DC 20037.

(1) Method 209A, Total Residue Dried at 103–105°C, in Standard 

Methods for the Examination of Water and Wastewater, 20th Edition,

1999, IBR approved February 25, 1985, for §60.683(b).

* * * * *

§60.46b [Amended]

5. By revising §60.46b (f)(1)(ii) and (h)(1) and (2) as 

follows:

§60.46b Compliance and performance test methods and procedures for 

particulate matter and nitrogen oxides.

* * * * *

(f)* * * 

(1)* * * 

(ii) Method 7E of Appendix A of this part or Method 320 of 

Appendix A of Part 63 shall be used to determine the NOX 

concentrations. Method 3A or 3B of Appendix A of this part shall be 

used to determine O2 concentration.

* * * * *

(h)* * * 
Page 60 of 181

(1) Conduct an initial performance test as required under §60.8 

over a minimum of 24 consecutive steam generating unit operating 

hours at maximum heat input capacity to demonstrate compliance with 

the NOX emission standards under §60.44b using Method 7, 7A, or 7E of 

Appendix A of this part, Method 320 of Appendix A of Part 63, or 

other approved reference methods; and

(2) Conduct subsequent performance tests once per calendar year 

or every 400 hours of operation (whichever comes first) to 

demonstrate compliance with the NOX emission standards under §60.44b 

over a minimum of 3 consecutive steam generating unit operating hours 

at maximum heat input capacity using Method 7, 7A, or 7E of Appendix 

A of this part, Method 320 of Appendix A of Part 63, or other 

approved reference methods.

* * * * *

§60.47b [Amended]

6. By revising §60.47b(b)(2)as follows:

§60.47b Emission monitoring for sulfur dioxide.

* * * * *

(b)* * * 

(2) Measuring SO2 according to Method 6B of Appendix A of this 

part at the inlet or outlet to the SO2 control system. An initial 

stratification test is required to verify the adequacy of the 

sampling location for Method 6B of Appendix A of this part. The 

stratification test shall consist of three paired runs of a suitable 

SO2 and CO2 measurement train operated at the candidate location and a 
Page 61 of 181

second similar train operated according to the procedures in Section 

3.2 and the applicable procedures in Section 7 of Performance 

Specification 2. Method 6B of Appendix A of this part, Method 6A of 

Appendix A of this part, or a combination of Methods 6 and 3 or 3B of 

Appendix A of this part or Methods 6C or Method 320 of Appendix A of 

Part 63 and 3A of Appendix A of this part are suitable measurement 

techniques. If Method 6B of Appendix A of this part is used for the 

second train, sampling time and timer operation may be adjusted for 

the stratification test as long as an adequate sample volume is 

collected; however, both sampling trains are to be operated 

similarly. For the location to be adequate for Method 6B of Appendix 

A of this part, 24-hour tests, the mean of the absolute difference 

between the three paired runs must be less than 10 percent.

* * * * *

§60.51c [Amended]

7. By revising the definition of medical/infectious waste in

§60.51c as follows:

§ 60.51c Definitions.

* * * 

Medical/infectious waste means any waste generated in the 

diagnosis, treatment, or immunization of human beings or animals, in 

research pertaining thereto, or in the production or testing of 

biologicals that are listed in paragraphs (1) through (7) of this 

definition. The definition of medical/infectious waste does not 

include hazardous waste identified or listed under the regulations in 
Page 62 of 181

part 261 of this chapter; household waste, as defined in §261.4(b)(1) 

of this chapter; ash from incineration of medical/infectious waste, 

once the incineration process has been completed; human corpses, 

remains, and anatomical parts that are intended for interment or 

cremation; and domestic sewage materials identified in §261.4(a)(1) 

of this chapter.

* * * * *

§60.84 [Amended]

8. By revising the equation in §60.84(d) as follows:

§60.84 Emission monitoring.

* * * * *

(d) * * *

Es = (Cs S)/[0.265–(0.0126 %O2)–(A %CO2)]

* * * * *

§60.154 [Amended]

9. By revising §60.154(b)(5) as follows:

§60.154 Test methods and procedures.

* * * * *

(b) * * * 

(5) Samples of the sludge charged to the incinerator shall be 

collected in nonporous jars at the beginning of each run and at 

approximately 1-hour intervals thereafter until the test ends; and 

“2540 G. Total, Fixed, and Volatile Solids in Solid and Semisolid 

Samples, in Standard Methods for the Examination of Water and 
Page 63 of 181

Wastewater, 20th Edition, 1998” (incorporated by reference—see 

§60.17) shall be used to determine dry sludge content of each sample 

(total solids residue), except that:

* * * * *

§60.284 [Amended]

10. By revising the equation in §60.284(c)(3) as follows: 

§ 60.284 Monitoring of emissions and operations.

* * * * *

(c)* * * 

(3)* * * 

C corr = C meas×(21− X)/(21− Y)

* * * * *

§60.335 [Amended]

11. By revising two terms for the equation in paragraph 

§60.335(b)(1) as follows:

§60.335 Test methods and procedures.

* * * * *

(b)* * * 

(1)* * * 

Pr = reference combustor inlet absolute pressure at 101.3 

kilopascals ambient pressure. Alternatively, you may use 760 mm Hg 

(29.92 in Hg),

Po = observed combustor inlet absolute pressure at test, mm Hg. 

Alternatively, you may use the barometric pressure for the date of 

the test,
Page 64 of 181

* * * * *

§60.374 [Amended]

12. By revising §60.374(b)(1), (b)(2), and (c)(2) as follows:

§ 60.374 Test methods and procedures.

* * * * *

(b) * * * 

(1) Method 12 or Method 29 shall be used to determine the lead 

concentration (CPb) and, if applicable, the volumetric flow rate (Qsda) 

of the effluent gas. The sampling time and sample volume for each run 

shall be at least 60 minutes and 0.85 dscm (30 dscf).

(2) When different operations in a three-process operation 

facility are ducted to separate control devices, the lead emission 

concentration (C) from the facility shall be determined as follows:

    















n

a

sda

n

a

C CaQsda Q

1 1

/

Where:

C = concentration of lead emissions for the entire facility, 

mg/dscm (gr/dscf).

Ca = concentration of lead emissions from facility “a”, mg/dscm 

(gr/dscf).

Qsda = volumetric flow rate of effluent gas from facility “a”, 

dscm/hr (dscf/hr).

N = total number of control devices to which separate 

operations in the facility are ducted.
Page 65 of 181

* * * * *

(c)* * * 

(2) Method 12 or Method 29 shall be used to determine the lead 

concentration (CPb) and the volumetric flow rate (Qsd) of the effluent 

gas. The sampling time and sample volume for each run shall be at 

least 60 minutes and 0.85 dscm (30 dscf).

* * * * *

§60.382 [Amended]

13. By revising paragraph 60.382(a)(1) as follows:

§ 60.382 Standard for particulate matter.

* * * * *

(a)* * * 

(1) Contain particulate matter in excess of 0.05 grams per dry 

standard cubic meter (0.05 g/dscm).

* * * * *

§60.386 [Amended]

14. By revising paragraph 60.386(b)(2) as follows:

§60.386 Test methods and procedures.

* * * * *

(b) * * *

(2) Method 9 and the procedures in §60.11 shall be used to 

determine opacity from stack emissions and process fugitive 

emissions. The observer shall read opacity only when emissions are 

clearly identified as emanating solely from the affected facility 

being observed. A single visible emission observer may conduct 
Page 66 of 181

visible emission observations for up to three fugitive, stack, or 

vent emission points within a 15-second interval. This option is 

subject to the following limitations:

(i) No more than three emission points are read concurrently;

(ii) All three emission points must be within a 70o viewing 

sector or angle in front of the observer such that the proper sun 

position can be maintained for all three points; and

(iii) If an opacity reading for any one of the three emission 

points is within 5 percent opacity of the application standard, then 

the observer must stop taking readings for the other two points and 

continue reading just that single point.

* * * * *

§60.472 [Amended]

15. By revising §60.472(a)(1)(ii) as follows:

§ 60.472 Standards for particulate matter.

* * * * *

(a) * * * 

(1) * * * 

(ii) 0.4 kg/Mg (0.8 lb/ton) of saturated felt or smooth-surfaced 

roll roofing produced;

* * * * *

§60.660 [Amended]

16. By revising §60.660(c)(4) as follows:

§ 60.660 Applicability and designation of affected facility.
Page 67 of 181

* * * * *

(c) * * * 

(4) Each affected facility that has a total resource 

effectiveness (TRE) index value greater than 8.0 is exempt from all 

provisions of this subpart except for §§60.662; 60.664 (e), (f), and 

(g); and 60.665 (h) and (l).

* * * * *

§60.665 [Amended]

17. By revising §60.665(h)(2) and (3) as follows:

§ 60.665 Reporting and recordkeeping requirements.

* * * * *

(h) * * * 

(2) Any recalculation of the TRE index value performed pursuant 

to §60.664(g); and

(3) The results of any performance test performed pursuant to 

the methods and procedures required by §60.664(e).

* * * * *

18. By revising Table 7 in the appendix to Subpart IIII as 

follows: 

Subpart IIII — Standards of Performance for Stationary Compression 

Ignition Internal Combustion Engines

* * * * *
Page 68 of 181

Table 7 to Subpart IIII of Part 60—Requirements for Performance Tests 

for Stationary CI ICE With a Displacement of ≥30 Liters per Cylinder

[As stated in §60.4213, you must comply with the following 

requirements for performance tests for stationary CI ICE with a 

displacement of ≥30 liters per cylinder:]

Each

Complying with 

the

requirement to

You must Using According to the 

following requirements

1. Stationary CI 

internal 

combustion 

engine with a 

displacement of 

≥ 30 liters per 

cylinder

a. Reduce NOX

emissions by 90 

percent or more

i. Measure NOX at 

the centroid of the 

exhaust at the inlet 

and outlet of the 

control device; 

(1) Method 7E of 

40 CFR part 60, 

Appendix A, 

Method 320 of 40 

CFR part 63, 

appendix A, or 

ASTM D 6348–03 

(incorporated by 

reference, see 

§60.17)

(a) NOX concentration 

must be at 15 percent 

O2, dry basis. Results of 

this test consist of the 

average of the three 1-

hour or longer runs.

 

ii. Measure O2 at the 

inlet and outlet of the 

control device; and,

(2) Method 3, 3A, 

or 3B of 40 CFR 

Part 60, Appendix 

A

(b) Measurements to 

determine O2

concentration must be 

made at the same time as 

the measurements for 

NOX concentration.

 

iii. If necessary, 

measure moisture 

content at the inlet 

and outlet of the 

control device.

(3) Method 4 of 40 

CFR Part 60, 

Appendix A, 

Method 320 of 40 

CFR Part 63, 

Appendix A, or 

ASTM D 6348–03 

(incorporated by 

reference, see 

§60.17)

(c) Measurements to 

determine moisture 

content must be made at 

the same time as the 

measurements for NOX

concentration.

 

b. Limit the 

concentration of 

NOX in the 

stationary CI 

internal 

combustion 

engine exhaust.

i. Measure NOX at 

the centroid of the 

exhaust of the 

stationary internal 

combustion engine;

(1) Method 7E of 

40 CFR Part 60, 

Appendix A, 

Method 320 of 40 

CFR Part 63, 

Appendix A, or 

ASTM D 6348–03 

(incorporated by 

reference, see 

§60.17)

(a) If using a control 

device, the sampling site 

must be located at the 

outlet of the control 

device. NOX

concentration must be at 

15 percent O2, dry basis. 

Results of this test 

consist of the average of 

the three 1-hour or 

longer runs.

 ii. Determine the (2) Method 3, 3A, (b) Measurements to 
Page 69 of 181

O2concentration of 

the stationary

internal combustion 

engine exhaust at the 

sampling port 

location; and,

or 3B of 40 CFR 

Part 60, Appendix 

A

determine O2

concentration must be 

made at the same time as 

the measurement for 

NOX concentration.

 

iii. If necessary, 

measure moisture 

content of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location.

(3) Method 4 of 40 

CFR Part 60, 

Appendix A, 

Method 320 of 40 

CFR Part 63, 

Appendix A, or 

ASTM D 6348–03 

(incorporated by 

reference, see 

§60.17)

(c) Measurements to 

determine moisture 

content must be made at 

the same time as the 

measurement for NOX

concentration.

 

c. Reduce PM 

emissions by 60 

percent or more

i. Select the sampling 

port location and the 

number of traverse 

points;

(1) Method 1 or 1A 

of 40 CFR Part 60, 

Appendix A

(a) Sampling sites must 

be located at the inlet 

and outlet of the control 

device.

 

ii. Measure O2 at the 

inlet and outlet of the 

control device;

(2) Method 3, 3A, 

or 3B of 40 CFR 

Part 60, Appendix 

A

(b) Measurements to 

determine O2

concentration must be 

made at the same time as 

the measurements for 

PM concentration.

 

iii. If necessary, 

measure moisture 

content at the inlet 

and outlet of the 

control device; and

(3) Method 4 of 40 

CFR Part 60, 

Appendix A

(c) Measurements to 

determine and moisture 

content must be made at 

the same time as the 

measurements for PM 

concentration.

 

iv. Measure PM at 

the inlet and outlet of 

the control device

(4) Method 5 of 40 

CFR Part 60, 

appendix A

(d) PM concentration 

must be at 15 percent 

O2, dry basis. Results of 

this test consist of the 

average of the three 1-

hour or longer runs.

 

d. Limit the 

concentration of 

PM in the 

stationary CI 

internal 

combustion 

engine exhaust

i. Select the sampling 

port location and the 

number of traverse 

points;

(1) Method 1 or 1A 

of 40 CFR Part 60, 

Appendix A

(a) If using a control 

device, the sampling site 

must be located at the 

outlet of the control 

device.

 ii. Determine the O2 (2) Method 3, 3A, (b) Measurements to 
Page 70 of 181

concentration of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location; and

or 3B of 40 CFR 

Part 60, Appendix 

A

determine O2

concentration must be 

made at the same time as 

the measurements for 

PM concentration.

 

iii. If necessary, 

measure moisture 

content of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location; 

(3) Method 4 of 40 

CFR Part 60, 

Appendix A

(c) Measurements to 

determine moisture 

content must be made at 

the same time as the 

measurements for PM 

concentration.

 

iv. Measure PM at 

the exhaust of the 

stationary internal 

combustion engine.

(4) Method 5 of 40 

CFR Part 60, 

Appendix A

(d) PM concentration 

must be at 15 percent 

O2, dry basis. Results of 

this test consist of the 

average of the three 1-

hour or longer runs.

19. By revising Table 2 in the appendix to Subpart JJJJ as 

follows: 

Subpart JJJJ—Standards of Performance for Stationary Spark Ignition 

Internal Combustion Engines

* * * * *
Page 71 of 181

Table 2 to Subpart JJJJ of Part 60—Requirements for Performance Tests

[As stated in §60.4244, you must comply with the following 

requirements for performance tests within 10 percent of 100 percent 

peak (or the highest achievable) load]

For each

Complying 

with the

requirement to You must Using

According to the 

following 

requirements

1. Stationary SI 

internal 

combustion 

engine 

demonstrating 

compliance 

according to 

§60.4244.

a. limit the 

concentration of 

NOX in the 

stationary SI 

internal 

combustion 

engine exhaust.

i. Measure NOX at 

the centroid of the 

exhaust of the 

stationary internal 

combustion engine;

(1) Method 7E of 40 

CFR Part 60, Appendix 

A, Method D6522–

00(2005)a, Method 320 

of 40 CFR Part 63, 

Appendix A, or ASTM 

D6348–03 (incorporated 

by reference, see 

§60.17).

(a) If using a control 

device, the sampling 

site must be located at 

the outlet of the 

control device. Results 

of this test consist of 

the average of the 

three 1-hour or longer 

runs.

 ii. Determine the O2

concentration of the 

stationary internal 

combustion engine 

exhaust;

(2) Method 3, 3A, or 

3Bbof 40 CFR Part 60, 

Appendix A or ASTM 

Method D6522–

00(2005)a

(b) Measurements to 

determine O2

concentration must be 

made at the same time 

as the measurements 

for NOX

concentration.

 iii. Determine the 

exhaust flow rate of 

the stationary

internal

combustion engine 

exhaust; and

(3) Method 2 or 19 of 40 

CFR Part 60.

 iv. If necessary, 

measure moisture 

content of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location.

(4) Method 4 of 40 CFR 

Part 60, Appendix A, 

Method 320 of 40 CFR 

Part 63, Appendix A, or 

ASTM D6348–03 

(incorporated by 

reference, see §60.17).

(c) Measurements to 

determine moisture 

must be made at the 

same time as the 

measurement for NOX

concentration.

 b. limit the 

concentration of 

CO in the 

stationary SI 

internal 

combustion 

i. Sample for CO at 

the centroid of the 

stack of the 

stationary internal 

combustion engine;

. (1) Method 10 of 40 

CFR Part 60, Appendix 

A, ASTM Method 

D6522–00(2005)a, 

Method 320 of 40 CFR 

Part 63, Appendix A, or 

(a) If using a control 

device, the sampling 

site must be located at 

the outlet of the 

control device. Results 

of this test consist of 
Page 72 of 181

engine exhaust. ASTM D 6348–03 

(incorporated by 

reference, see §60.17).

the average of the 

three 1-hour or longer 

runs.

 ii. Determine the 

O2concentration of 

the stationary

internal combustion 

engine exhaust at 

the sampling port 

location;

. (2) Method 3, 3A, or 

3Bb of 40 CFR Part 60, 

Appendix A or ASTM 

Method D6522–

00(2005)a.

(b) Measurements to 

determine 

O2concentration must 

be made at the same 

time as the 

measurements for CO 

concentration.

 iii. Determine the 

exhaust flow rate of 

the stationary

internal combustion 

engine exhaust; and,

(3) Method 2 or 19 of 40 

CFR Part 60.

 iv. If necessary, 

measure moisture 

content of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location.

. (4) Method 4 of 40 

CFR Part 60, Appendix 

A, Method 320 of 40

CFR Part 63, Appendix 

A, or ASTM D6348–03 

(incorporated by 

reference, see §60.17).

(c) Measurements to 

determine moisture 

must be made at the 

same time as the 

measurement for CO 

concentration.

 c. limit the 

concentration of 

VOC in the 

stationary SI 

internal 

combustion 

engine exhaust.

i. Measure VOC at 

the centroid of the 

exhaust of the 

stationary internal 

combustion engine;

. (1) Methods 25A and 

18 of 40 CFR Part 60, 

Appendix A, Method 

25A with the use of a 

methane cutter as 

described in 40 CFR 

1065.265, Method 18 or 

40 CFR Part 60, 

Appendix A, cdMethod 

320 of 40 CFR part 63, 

Appendix A, or ASTM 

D6348–03 (incorporated 

by reference, see 

§60.17).

(a) If using a control 

device, the sampling 

site must be located at 

the outlet of the 

control device. Results 

of this test consist of 

the average of the 

three 1-hour or longer 

runs.

 ii. Determine the 

O2concentration of 

the stationary

internal combustion 

engine exhaust at 

the sampling port 

location;

. (2) Method 3, 3A, or 

3Bbof 40 CFR Part 60, 

Appendix A or ASTM 

Method D6522–

00(2005)a.

(b) Measurements to 

determine O2

concentration must be

made at the same time 

as the measurements 

for VOC 

concentration.

 iii. Determine the (3) Method 2 or 19 of 40 
Page 73 of 181

exhaust flow rate of 

the stationary

internal combustion 

engine exhaust; and

CFR part 60.

 iv. If necessary, 

measure moisture 

content of the 

stationary internal 

combustion engine 

exhaust at the 

sampling port 

location.

. (4) Method 4 of 40 

CFR Part 60, Appendix 

A, Method 320 of 40 

CFR Part 63, Appendix 

A, or ASTM D6348–03 

(incorporated by 

reference, see §60.17).

(c) Measurements to 

determine moisture 

must be made at the 

same time as the 

measurement for VOC 

concentration

aASTM D6522–00 is incorporated by reference; see 40 CFR 60.17. Also, you may petition the Administrator 

for approval to use alternative methods for portable analyzer.

bYou may use ASME PTC 19.10–1981, Flue and Exhaust Gas Analyses, for measuring the O2content of the 

exhaust gas as an alternative to EPA Method 3B.

cYou may use EPA Method 18 of 40 CFR part 60, appendix A, provided that you conduct an adequate presurvey 

test prior to the emissions test, such as the one described in OTM 11 on EPA's Web site 

(http://www.epa.gov/ttn/emc/prelim/otm11.pdf).

dYou may use ASTM D6420–99 (2004), Test Method for Determination of Gaseous Organic Compounds by Direct 

Interface Gas Chromatography/Mass Spectrometry as an alternative to EPA Method 18 for measuring total 

nonmethane organic.

* * * * *

20. In Method 1 of Appendix A-1 by revising Sections 11.2.2,

11.4.1, and Figures 1-1 and 1-2 as follows:

Method 1 – Sample and Velocity Traverses from Stationary Sources

* * * * *

11.2.2 Velocity and Gaseous (Non-Particulate) Traverses.

Perform a stratification test to determine the appropriate number of 

sample traverse points. If testing for multiple pollutants or 

diluents at the same site, a stratification test using only one 

pollutant or diluent satisfies this requirement. A stratification 

test is not required for small stacks that are less than 4 inches in 

diameter. When the 8- and 2-diameter criterion can be met, the 

minimum number of traverse points for the stratification test will be 

12. Test for stratification using a probe of appropriate length to 
Page 74 of 181

measure the gas concentration at the required traverse points located 

according to Table 1–2. Alternatively (if the 8- and 2-diameter 

criterion is met), you may measure the gas concentration at three 

points on a line passing through the centroidal area. Space the three 

points at 16.7, 50.0, and 83.3 percent of the measurement line. 

Sample for a minimum of twice the system response time at each 

traverse point. Calculate the individual point and mean 

concentrations. If the concentration at each traverse point differs 

from the mean concentration for all traverse points by no more than: 

(a) ± 5.0 percent of the mean concentration; or (b) ± 0.5 ppm 

(whichever is less restrictive), the gas stream is considered 

unstratified and you may collect samples from a single point that 

most closely matches the mean. If the 5.0 percent or 0.5 ppm 

criterion is not met, but the concentration at each traverse point 

differs from the mean concentration for all traverse points by no 

more than: (a) ± 10.0 percent of the mean; or (b) ± 1.0 ppm 

(whichever is less restrictive), the gas stream is considered to be 

minimally stratified, and you may take samples from three points. 

Space the three points at 16.7, 50.0, and 83.3 percent of the 

measurement line. Alternatively, if a 12-point stratification test 

was performed and the emissions were shown to be minimally stratified 

(all points within ± 10.0 percent of their mean or within ± 1.0 ppm), 

and if the stack diameter (or equivalent diameter, for a rectangular 

stack or duct) is greater than 2.4 meters (7.8 ft), then you may use 

3-point sampling and locate the three points along the measurement 
Page 75 of 181

line exhibiting the highest average concentration during the 

stratification test at 0.4, 1.0 and 2.0 meters from the stack or duct 

wall. If the gas stream is found to be stratified because the 10.0 

percent or 1.0 ppm criterion for a 3-point test is not met, locate 12

traverse points for the test in accordance with Table 1–2.

* * * * *

11.4.1 In most stationary sources, the direction of stack gas 

flow is essentially parallel to the stack walls. However, cyclonic 

flow may exist (1) after such devices as cyclones and inertial 

demisters following venturi scrubbers, or (2) in stacks having 

tangential inlets or other duct configurations which tend to induce 

swirling. Determine the presence or absence of cyclonic flow at each

sampling location. The following techniques are acceptable for this 

determination.

* * * * *
Page 76 of 181
Page 77 of 181

* * * * *

21. In Method 2 of Appendix A-1 by revising Sections 8.1, 10.4, 

12.6, and 12.7, by revising the note at the end of 10.1.1, and by 

adding a term to Section 12.1 as follows:

Method 2 — Determination of Stack Gas Velocity and Volumetric Flow 

Rate (Type S Pitot Tube)

* * * * *

8.1 Set up the apparatus as shown in Figure 2-1. Capillary 

tubing or surge tanks installed between the manometer and pitot tube 

may be used to dampen ΔP fluctuations. It is recommended, but not 

required, that a pretest leak-check be conducted as follows: (1) blow 

through the pitot impact opening until at least 7.6 cm (3.0 in.) H2O 

velocity head registers on the manometer; then, close off the impact 

opening. The pressure shall remain stable (±2.5 mm H2O, ±0.10 in. H2O) 

for at least 15 seconds; (2) do the same for the static pressure 

side, except using suction to obtain the minimum of 7.6 cm (3.0 in.) 

H2O. Other leak-check procedures, subject to the approval of the 

Administrator, may be used.

* * * * *

10.1.1 * * * 

Note: Do not use a Type S pitot tube assembly that is constructed 

such that the impact pressure opening plane of the pitot tube is 

below the entry plane of the nozzle (see Figure 2–7B).

* * * * *
Page 78 of 181

10.4 Barometer. Calibrate the barometer used against a mercury 

barometer or NIST-traceable barometer prior to each field test.

* * * * *

12.1 Nomenclature

* * * 

Ts(abavg) – Average absolute stack temperature, °K (°R).

* * * * *

12.6 Average Stack Gas Velocity.

 =  





∑ ∆



 

()



. 2 − 7 

Where:

Kp = Metric

K mm H O

m g g mole mm Hg

o

1/ 2

2

( )( )

( / )( )

sec

34.97 









 

 

English

R in H O

ft lb lb mole in Hg

o

1/ 2

2

( )( . )

( / )( . )

sec

85.49 









 



12.7 Average Stack Gas Dry Volumetric Flow Rate.

Q = 3600(1 − B) 



() . 2 − 8

* * * * *

22. In Method 2A of Appendix A-1 by revising Sections 10.3 and 

12.2 as follows:

Method 2A — Direct Measurement of Gas Volume Through Pipes and Small 

Ducts

* * * * *

10.3 Barometer. Calibrate the barometer used against a mercury 

barometer or NIST-traceable barometer prior to the field test.
Page 79 of 181

* * * * *

12.2 Test Meter Calibration Coefficient.

. 2 1

( )( )/

( ) /

( )

( )



 



 Eq A

V V P P T

V V P T

Y

mf mi b g m abs

rf ri b r abs

m

* * * * *

23. In Method 2B of Appendix A-1 by revising Section 12.1 as 

follows:

Method 2B – Determination of Exhaust Gas Volume Flow Rate from 

Gasoline Vapor Incinerators

* * * * *

12.1 Nomenclature.

COe = Mean carbon monoxide concentration in system exhaust, 

ppm.

(CO2)a = Ambient carbon dioxide concentration, ppm (if not 

measured during the test period, may be assumed to equal 380 ppm).

(CO2)e = Mean carbon dioxide concentration in system exhaust, 

ppm.

HCe = Mean organic concentration in system exhaust as defined 

by the calibration gas, ppm.

Hci = Mean organic concentration in system inlet as defined by 

the calibration gas, ppm.

Ke = Hydrocarbon calibration gas factor for the exhaust 

hydrocarbon analyzer, unitless [equal to the number of carbon atoms 

per molecule of the gas used to calibrate the analyzer (2 for ethane, 

3 for propane, etc.)].
Page 80 of 181

Ki = Hydrocarbon calibration gas factor for the inlet 

hydrocarbon analyzer, unitless.

Ves = Exhaust gas volume, m3.

Vis = Inlet gas volume, m3.

Qes = Exhaust gas volume flow rate, m3 /min.

Qis = Inlet gas volume flow rate, m3 /min.

Θ = Sample run time, min.

S = Standard conditions: 20°C, 760 mm Hg.

* * * * *

23. In Method 2D of Appendix A-1 by revising Section 10.4 as 

follows: 

Method 2D — Measurement of Gas Volume Flow Rates in Small Pipes and 

Ducts

* * * * *

10.4 Barometer. Calibrate the barometer used against a mercury 

barometer or NIST-traceable barometer prior to the field test.

* * * * *

24. In Method 3A of Appendix A-2 by revising Section 7.1 as 

follows:

Method 3A – Determination of Oxygen and Carbon Dioxide Concentrations 

in Emissions From Stationary Sources (Instrumental Analyzer 

Procedure)

* * * * *

7.1 Calibration Gas. What calibration gases do I need? Refer 

to Section 7.1 of Method 7E for the calibration gas requirements. 
Page 81 of 181

Example calibration gas mixtures are listed below. Pre-cleaned or 

scrubbed air may be used for the O2 high-calibration gas provided it 

does not contain other gases that interfere with the O2 measurement.

(a) CO2 in Nitrogen (N2).

(b) CO2 in air.

(c) CO2/SO2 gas mixture in N2.

(d) O2/SO2 gas mixture in N2.

(e) O2/CO2/SO2 gas mixture in N2.

(f) CO2/NOx gas mixture in N2.

(g) CO2/SO2/NOx gas mixture in N2.

The tests for analyzer calibration error and system bias require 

high-, mid-, and low-level gases.

* * * * *

25. In Method 4 of Appendix A-3 by revising Sections 9.1 and 16

as follows: 

Method 4 — Determination of Moisture Content in Stack Gases

* * * * *

9.1 Miscellaneous Quality Control Measures.

Section Quality control measure Effect

Section 

8.1.1.4

Leak rate of the sampling system 

cannot exceed four percent of the 

average sampling rate or 0.00057 

m

3/min (0.020 cfm)

Ensures the accuracy of the 

volume of gas sampled. 

(Reference Method)

Section 

8.2.1

Leak rate of the sampling system 

cannot exceed two percent of the 

average sampling rate

Ensures the accuracy of the 

volume of gas sampled. 

(Approximation Method)

* * * * *
Page 82 of 181

16.0 Alternative Procedures

16.1 The procedure described in Method 5 for determining 

moisture content is an acceptable alternative to Method 4.

16.2 The procedures in Method 6A for determining moisture is an 

acceptable alternative to Method 4.

16.3 Method 320 is an acceptable alternative to Method 4 for 

determining moisture.

16.4 Using F-factors to determine moisture is an acceptable 

alternative to Method 4. For a combustion stack not using a scrubber, 

the moisture content may be calculated as follows:

 =  +  + 

Where: 

BA = Mole fraction of moisture in the ambient air.

=

%

100 

[10[.(



.)

]

BF = Mole fraction of moisture from free water in the fuel.

 = 

0.0036  + 0.075 

100 [

20.9 − 

20.9

]

BH = Mole fraction of moisture from the hydrogen in the fuel.
Page 83 of 181

 

20.9

20.9

1

O2

F

F

B

w

d

H



















 

Bws = Mole fraction of moisture in the stack gas.

Fd = Volume of dry combustion components per unit of heat 

content at 0 percent oxygen, dscf/106 Btu (scm/J). See Table 19-2 in 

Method 19.

FW = Volume of wet combustion components per unit of heat 

content at 0 percent oxygen, wet scf/106 Btu (scm/J). See Table 19-2 

in Method 19.

%RH = Percent relative humidity (calibrated hydrometer 

acceptable), percent.

PBar = Barometric pressure, in. Hg (mm Hg).

T = Ambient temperature, oF (oC).

W = Percent free water by weight, percent.

O2 = Percent oxygen in stack gas, dry basis, percent.

* * * * *

25. In Method 5 of Appendix A-3 by deleting Section 7.1.5 and 

by revising Sections 6.1.1.5, 6.1.1.7, 6.1.1.9, 7.1.3, 8.1, 8.3.4, 

8.7.3, 8.7.5, 10.3.3, 10.4, 10.5, 10.6, Equation 5-13 in Section 

16.2.3.3, Section 16.3, and by adding Section 16.3 and reference 13 

to Section 17.0 as follows:

Method 5 — Determination of Particulate Matter Emissions From 

Stationary Sources

* * * * *
Page 84 of 181

6.1.1.5 Filter Holder. Borosilicate glass, with a glass frit 

filter support and a silicone rubber gasket. Alternatively, Teflon 

filter holders may be used. Other materials of construction ( e.g., 

stainless steel or Viton) may be used, subject to the approval of the 

Administrator. The holder design shall provide a positive seal 

against leakage from the outside or around the filter. The holder 

shall be attached immediately at the outlet of the probe (or cyclone, 

if used).

* * * * *

6.1.1.7 Temperature Sensor. A calibrated temperature sensor 

(rechecked at at least one point after each test) shall be installed 

so that the sensing tip of the temperature sensor is in direct 

contact with the sample gas, and the temperature around the filter 

holder can be regulated and monitored during sampling.

* * * * *

6.1.1.9 Metering System. Vacuum gauge, leak-free pump, 

calibrated temperature sensors (rechecked at at least one point after 

each test), dry gas meter (DGM) capable of measuring volume to within 

2 percent, and related equipment, as shown in Figure 5–1. 

Alternatively, an Isostack metering system may be used if all Method 

5 calibrations are performed, with the exception of those related to 

∆H@ in Section 9.2.1, wherein the sample flow rate system shall be 

calibrated in lieu of ∆H@ and shall not deviate by more than 5 

percent. Other metering systems capable of maintaining sampling rates 
Page 85 of 181

within 10 percent of isokinetic and of determining sample volumes to 

within 2 percent may be used, subject to the approval of the 

Administrator. When the metering system is used in conjunction with a 

pitot tube, the system shall allow periodic checks of isokinetic 

rates.

* * * * *

7.1.3 Water. When analysis of the material caught in the 

impingers is required, deionized distilled water (to conform to ASTM 

D 1193–77 or 91 Type 3 (incorporated by reference—see §60.17)) with 

≤0.001 percent residue shall be used. Run blanks prior to field use 

to eliminate a high blank on test samples, and use only water with

low blank values (≤0.001 percent). 

* * * * *

8.1 Pretest Preparation. It is suggested that sampling 

equipment be maintained according to the procedures described in 

APTD-0576. Alternative mercury-free thermometers may be used if the 

thermometers are at a minimum equivalent in terms of performance or 

suitably effective for the specific temperature measurement 

application.

* * * * *

8.3.4 Set up the train as shown in Figure 5–1 ensuring that the 

connections are leak-tight. Subject to the approval of the

Administrator, a glass cyclone may be used between the probe and 

filter holder when the total particulate catch is expected to exceed 

100 mg or when water droplets are present in the stack gas.
Page 86 of 181

* * * * *

8.7.3 Before moving the sample train to the cleanup site, 

remove the probe from the sample train and cap the open outlet of the 

probe. Be careful not to lose any condensate that might be present. 

Cap the filter inlet where the probe was fastened. Remove the 

umbilical cord from the last impinger, and cap the impinger. If a 

flexible line is used between the first impinger or condenser and the 

filter holder, disconnect the line at the filter holder, and let any 

condensed water or liquid drain into the impingers or condenser. Cap 

off the filter holder outlet and impinger inlet. Either ground-glass 

stoppers, plastic caps, or serum caps may be used to close these 

openings.

* * * * *

8.7.5 Save a portion of the acetone used for cleanup as a 

blank. For each container of acetone used for cleanup, save 200 ml 

and place it in a glass sample container labeled “acetone blank.” To 

minimize any particulate contamination, rinse the wash bottle prior 

to filling from the tested container. Take 200 ml of this acetone 

directly from the wash bottle being used, and place it in a glass 

sample container labeled “acetone blank.”

* * * * *

10.3.3 Acceptable Variation in Calibration Check. If the DGM 

coefficient values obtained before and after a test series differ by 

more than 5 percent, the test series shall either be voided, or 

calculations for the test series shall be performed using whichever 
Page 87 of 181

meter coefficient value ( i.e., before or after) gives the lower 

value of total sample volume.

* * * * *

10.4 Probe Heater Calibration. Use a heat source to generate 

air heated to selected temperatures that approximate those expected 

to occur in the sources to be sampled. Pass this air through the 

probe at a typical sample flow rate while measuring the probe inlet 

and outlet temperatures at various probe heater settings. For each 

air temperature generated, construct a graph of probe heating system 

setting versus probe outlet temperature. The procedure outlined in 

APTD–0576 can also be used. Probes constructed according to APTD–0581 

need not be calibrated if the calibration curves in APTD–0576 are 

used. Also, probes with outlet temperature monitoring capabilities do 

not require calibration. As an alternative, the following singlepoint calibration procedure may be used. After each test run series, 

check the accuracy (and, hence, the calibration) of each thermocouple 

system at ambient temperature, or any other temperature, within the 

range specified by the manufacturer, using a reference thermometer 

(either ASTM reference thermometer or a thermometer that has been 

calibrated against an ASTM reference thermometer). The temperatures 

of the thermocouple and reference thermometers shall agree to within 

±2 oF. NOTE: The probe heating system shall be calibrated before its 

initial use in the field.

10.5 Temperature Sensors. Use the procedure in Section 10.3 of 

Method 2 to calibrate in-stack temperature sensors. Dial 
Page 88 of 181

thermometers, such as are used for the DGM and condenser outlet, 

shall be calibrated against mercury-in-glass thermometers. An 

alternative mercury-free NIST-traceable thermometer may be used if 

the thermometer is, at a minimum, equivalent in terms of performance 

or suitably effective for the specific temperature measurement 

application.

10.6 Barometer. Calibrate against a mercury barometer or NISTtraceable barometer prior to the field test. Alternatively, 

barometric pressure may be obtained from a weather report that has 

been adjusted for the test point (on the stack) elevation.

* * * * *

16.2.3.3 * * * 

() = 

′ 



 Eq. 5-13

* * * * *

16.3 Alternative Post-Test Metering System Calibration. The 

following procedure may be used as an alternative to the post-test 

calibration described in Section 10.3.2. This alternative procedure 

does not detect leakages between the inlet of the metering system and 

the dry gas meter. Therefore, two steps must be included to make it 

an equivalent alternative: 1) The metering system must pass the posttest leak-check from either the inlet of the sampling train or the 

inlet of the metering system. Therefore, if the train fails the 

former leak-check, another leak-check from the inlet of the metering 

system must be conducted; 2) The metering system must pass the leak-
Page 89 of 181

check of that portion of the train from the pump to the orifice meter 

as described in Section 10.3.1.1.

16.3.1 After each test run, do the following:

16.3.1.1 Ensure that the metering system has passed the posttest leak-check. If not, conduct a leak-check of the metering system 

from its inlet.

16.3.1.2 Conduct the leak-check of that portion of the train 

from the pump to the orifice meter as described in Section 10.3.1.1.

16.3.1.3 Calculate Yqa for each test run using the following 

equation:

 =







.

∆@

∆

.









 √∆



Eq. 5-15

Where: 

Yqa = Dry gas meter calibration check value, dimensionless.

0.0319 = (29.92/528)(0.75)2(in. Hg/R) cfm2

.

∆H@ = Orifice meter calibration coefficient, in. H2O.

Md = Dry molecular weight of stack gas, lb/lb-mole.

29 = Dry molecular weight of air, lb/lb-mole.

16.3.2 After each test run series, do the following:

16.3.2.1 Average the three or more Yqa’s obtained from the test 

run series and compare this average Yqa with the dry gas meter 

calibration factor Y. The average Yqa must be within 5 percent of Y.
Page 90 of 181

16.3.2.2 If the average Yqa does not meet the 5 percent 

criterion, recalibrate the meter over the full range of orifice 

settings as detailed in Section 10.3.1. Then follow the procedure in 

Section 10.3.3.

* * * * *

17.0 References.

* * * 

13. Shigehara, Roger T., P.G. Royals, and E.W. Steward. 

“Alternative Method 5 Post-Test Calibration.” Entropy Incorporated, 

Research Triangle Park, NC 27709.

* * * * *

26. In Method 5A of Appendix A-3 by revising Section 8.1 as 

follows:

Method 5A — Determination of Particulate Matter Emissions From the 

Asphalt Processing and Asphalt Roofing Industry

* * * * * 

8.1 Pretest Preparation. Unless otherwise specified, maintain

and calibrate all components according to the procedure described in 

APTD-0576, “Maintenance, Calibration, and Operation of Isokinetic 

Source-Sampling Equipment” (Reference 3 in Method 5, Section 17.0). 

Alternative mercury-free thermometers may be used if the thermometers 

are, at a minimum, equivalent in terms of performance or suitably 

effective for the specific temperature measurement application.

* * * * * 
Page 91 of 181

27. In Method 5E of Appendix A-3 by redesignating Section 16 as 

17, Section 17 as 18, and by adding a new Section 16 as follows:

Method 5E — Determination of Particulate Matter Emissions From the 

Wool Fiberglass Insulation Manufacturing Industry

* * * * *

16.0 Alternative Procedures

16.1 Total Organic Carbon Analyzer. Tekmar-Dohrmann analyzers 

using the single injection technique may be used as an alternative to 

Rosemount Model 2100A analyzers.

* * * * *

28. In Method 5H of Appendix A-3 by revising Section 12.1, 

adding Section 12.15, redesignating Section 16 as 17 and Section 17 

as 18, and adding a new Section 16 as follows:

Method 5H – Determination of Particulate Matter Emissions From Wood 

Heaters From a Stack Location

* * * * *

12.1 Nomenclature.

A = Sample flow rate adjustment factor.

BR = Dry wood burn rate, kg/hr (lb/hr), from Method 28, Section 

8.3.

Bws = Water vapor in the gas stream, proportion by volume.

Ci = Tracer gas concentration at inlet, ppmv.

Co = Tracer gas concentration at outlet, ppmv.

Cs = Concentration of particulate matter in stack gas, dry basis, 

corrected to standard conditions, g/dscm (g/dscf).
Page 92 of 181

E = Particulate emission rate, g/hr (lb/hr).

ΔH = Average pressure differential across the orifice meter (see 

Figure 5H–1), mm H2O (in. H2O).

La = Maximum acceptable leakage rate for either a post-test leakcheck or for a leak-check following a component change; equal to 

0.00057 cmm (0.020 cfm) or 4 percent of the average sampling rate, 

whichever is less.

L1 = Individual leakage rate observed during the leak-check 

conducted before a component change, cmm (cfm).

Lp = Leakage rate observed during the post-test leak-check, cmm 

(cfm).

mn = Total amount of particulate matter collected, mg.

Ma = Mass of residue of solvent after evaporation, mg.

NC = Grams of carbon/gram of dry fuel (lb/lb), equal to 0.0425.

NT = Total dry moles of exhaust gas/kg of dry wood burned, gmoles/kg (lb-moles/lb).

PR = Percent of proportional sampling rate.

Pbar = Barometric pressure at the sampling site, mm Hg (in.Hg).

Pstd = Standard absolute pressure, 760 mm Hg (29.92 in.Hg).

Qi = Gas volumetric flow rate at inlet, cfm (l/min).

Qo = Gas volumetric flow rate at outlet, cfm (l/min).

* * * * *

12.15 Alternative Tracer Gas Flow Rate Determination.
Page 93 of 181

 =

 × 



. 5 − 10

Note: This gives Q for a single instance only. Repeated 

multiple determinations are needed to track temporal variations. Very 

small variations in Qi, Ci, or Co may give very large variations in Qo.

* * * * *

16.0 Alternative Procedures

16.1 Alternative Stack Gas Volumetric Flow Rate Determination 

(Tracer Gas).

16.1.1 Apparatus.

16.1.1.1 Tracer Gas Injector System. This is to inject a known 

concentration of tracer gas into the stack. This system consists of a 

cylinder of tracer gas, a gas cylinder regulator, a stainless steel 

needle valve or a flow controller, a nonreactive (stainless steel or 

glass) rotameter, and an injection loop to disperse the tracer gas 

evenly in the stack.

16.1.1.2 Tracer Gas Probe. A glass or stainless steel sampling 

probe.

16.1.1.3 Gas Conditioning System. A gas conditioning is a 

system suitable for delivering a cleaned sample to the analyzer 

consisting of a filter to remove particulate and a condenser capable 

of lowering the dew point of the sample gas to less than 5C (40F). A 

desiccant such as anhydrous calcium sulfate may be used to dry the 
Page 94 of 181

sample gas. Desiccants which react or absorb tracer gas or stack gas 

may not be used, e.g. silica gel absorbs CO2.

16.1.1.4. Pump. An inert (i.e., stainless steel or Teflon head) 

pump to deliver more than the total sample required by the 

manufacturer’s specifications for the analyzer used to measure the 

downstream tracer gas concentration.

16.1.1.5 Gas Analyzer. A gas analyzer is any analyzer capable 

of measuring the tracer gas concentration in the range necessary at 

least every 10 minutes. A means of controlling the analyzer flow rate 

and a device for determining proper sample flow rate shall be 

provided unless data is provided to show that the analyzer is 

insensitive to flow variations over the range encountered during the 

test. The gas analyzer needs to meet or exceed the flowing 

performance specifications: 

Linearity ± 1 percent of full scale

Calibration Error ≤ 2 percent of span

Response Time ≤ 10 seconds

Zero Drift (24 hour) ≤ 2 percent of full scale

Span Drift (24 hour) ≤ 2 percent of full scale

Resolution ≤ 0.5 percent of span

16.1.1.6 Recorder (optional). To provide a permanent record of 

the analyzer output.

16.1.2 Reagents.
Page 95 of 181

16.1.2.1 Tracer Gas. The tracer gas is sulfur hexafluoride in an 

appropriate concentration for accurate analyzer measurement or pure 

sulfur dioxide. The gas used must be nonreactive with the stack 

effluent and give minimal (<3 percent) interference to measurement by 

the gas analyzer.

16.1.3 Procedure. Select upstream and downstream locations in 

the stack or duct for introducing the tracer gas and delivering the 

sampled gas to the analyzer. The inlet location should be 8 or more 

duct diameters beyond any upstream flow disturbance. The outlet 

should be 8 or more undisturbed duct diameters from the inlet and 2 

or more duct diameters from the duct exit. After installing the 

apparatus, meter a known concentration of the tracer gas into the 

stack at the inlet location. Use the gas sample probe and analyzer to 

show that no stratification of the tracer gas is found in the stack 

at the measurement locations. Monitor the tracer gas concentration 

from the outlet location and record the concentration at 10-minute 

intervals or more often at the option of the tester. A minimum of 

three measured intervals is recommended to determine the stack gas 

volumetric flow rate. Other statistical procedures may be applied for 

complete flow characterization and additional QA/QC.

* * * * *

29. In Method 6 of Appendix A-4 by revising Sections 10.2 and

10.4 as follows:

Method 6 — Determination of Sulfur Dioxide Emissions From Stationary 

Sources
Page 96 of 181

* * * * *

10.2 Temperature Sensors. Calibrate against mercury-in-glass 

thermometers. An alternative mercury-free thermometer may be used if 

the thermometer is, at a minimum, equivalent in terms of performance 

or suitably effective for the specific temperature measurement 

application.

* * * * *

10.4 Barometer. Calibrate against a mercury barometer or NISTtraceable barometer prior to the field test.

* * * * *

30. In Method 6C of Appendix A-4 by revising Sections 4.0 and 

8.3 as follows:

Method 6C — Determination of Sulfur Dioxide Emissions From Stationary 

Sources (Instrumental Analyzer Procedure)

* * * * *

4.0 Interferences

Refer to Section 4.0 of Method 7E.

* * * * *

8.3 Interference Check. You must follow the procedures of 

Section 8.2.7 of Method 7E to conduct an interference check, 

substituting SO2 for NOX as the method pollutant. For dilution-type 

measurement systems, you must use the alternative interference check 

procedure in Section 16 and a co-located, unmodified Method 6 

sampling train. Quenching in fluorescence analyzers must be evaluated 
Page 97 of 181

and remedied unless a dilution system and ambient-level analyzer is 

used. This may be done by preparing the calibration gas to contain 

within 1 percent of the absolute oxygen and carbon dioxide content of 

the measured gas, preparing the calibration gas in air and using 

vendor nomographs, or by other acceptable means.

* * * * *

31. In Method 7 of Appendix A-4 by revising Sections 4.0, 10.2, 

and 10.3 as follows:

Method 7 — Determination of Nitrogen Oxide Emissions From Stationary 

Sources

* * * * *

4.0 Interferences

Biased results have been observed when sampling under conditions 

of high sulfur dioxide concentrations. At or above 2100 ppm SO2, use 

five times the H2O2 concentration of the Method 7 absorbing solution. 

Laboratory tests have shown that high concentrations of SO2 (about 

2100 ppm) cause low results in Method 7 and 7A. Increasing the H2O2

concentration to five times the original concentration eliminates 

this bias. However, when no SO2 is present, increasing the 

concentration by five times results in a low bias.

* * * * *

10.2 Barometer. Calibrate against a mercury barometer or NISTtraceable barometer prior to the field test.

10.3 Temperature Gauge. Calibrate dial thermometers against 

mercury-in-glass thermometers. An alternative mercury-free 
Page 98 of 181

thermometer may be used if the thermometer is, at a minimum,

equivalent in terms of performance or suitably effective for the 

specific temperature measurement application.

* * * * *

32. In Method 7A of Appendix A-4 by revising Sections 4.0 and 

10.4 as follows:

Method 7A – Determination of Nitrogen Oxide Emissions From Stationary 

Sources (Ion Chromatographic Method)

* * * * *

4.0 Interferences

Biased results have been observed when sampling under conditions 

of high sulfur dioxide concentrations. At or above 2100 ppm SO2, use 

five times the H2O2 concentration of the Method 7 absorbing solution. 

Laboratory tests have shown that high concentrations of SO2 (about 

2100 ppm) cause low results in Method 7 and 7A. Increasing the H2O2

concentration to five times the original concentration eliminates 

this bias. However, when no SO2 is present, increasing the 

concentration by five times results in a low bias.

* * * * *

10.4 Temperature Gauge. Calibrate dial thermometers against 

mercury-in-glass thermometers. An alternative mercury-free 

thermometer may be used if the thermometer is, at a minimum,

equivalent in terms of performance or suitably effective for the 

specific temperature measurement application.

* * * * *
Page 99 of 181

33. In Method 7E of Appendix A-4 by revising Sections 6.1,

7.1.1, 8.1.2, 8.2.5, and 16.2.2 as follows:

Method 7E — Determination of Nitrogen Oxides Emissions From 

Stationary Sources (Instrumental Analyzer Procedure)

* * * * *

6.1 What do I need for the measurement system? You may use any 

equipment and supplies meeting the following specifications:

1) Sampling system components that are not evaluated in the 

system bias or system calibration error test must be glass, Teflon, 

or stainless steel. Other materials are potentially acceptable, 

subject to approval by the Administrator. 

2) The interference, calibration error, and system bias 

criteria must be met.

3) Sample flow rate must be maintained within 10 percent of the 

flow rate at which the system response time was measured. 

4) All system components (excluding sample conditioning 

components, if used) must maintain the sample temperature above the 

moisture dew point. Ensure minimal contact between any condensate and 

the sample gas. Section 6.2 provides example equipment specifications 

for a NOx measurement system. Figure 7E-1 is a diagram of an example 

dry-basis measurement system that is likely to meet the method 

requirements and is provided as guidance. For wet-basis systems, you 

may use alternative equipment and supplies as needed (some of which 

are described in Section 6.2), provided that the measurement system 

meets the applicable performance specifications of this method. 
Page 100 of 181

* * * * *

7.1.1 High-Level Gas. This concentration is chosen to set the 

calibration span as defined in Section 3.4. Choose this high-level 

concentration so that emission measurements will be within 20 to 100 

percent of this concentration.

* * * * *

8.1.2 Determination of Stratification. Perform a stratification 

test at each test site to determine the appropriate number of sample 

traverse points. If testing for multiple pollutants or diluents at 

the same site, a stratification test using only one pollutant or 

diluent satisfies this requirement. A stratification test is not 

required for small stacks that are less than 4 inches in diameter. To 

test for stratification, use a probe of appropriate length to measure 

the NOx (or pollutant of interest) concentration at 12 traverse points 

located according to Table 1-1 or Table 1-2 of Method 1. 

Alternatively, you may measure at three points on a line passing 

through the centroidal area. Space the three points at 16.7, 50.0, 

and 83.3 percent of the measurement line. Sample for a minimum of 

twice the system response time (see Section 8.2.6) at each traverse 

point. Calculate the individual point and mean NOx concentrations. If 

the concentration at each traverse point differs from the mean 

concentration for all traverse points by no more than: (a) ±5.0 

percent of the mean concentration; or (b) ±0.5 ppm (whichever is less 

restrictive), the gas stream is considered unstratified and you may 

collect samples from a single point that most closely matches the 
Page 101 of 181

mean. If the 5.0 percent or 0.5 ppm criterion is not met, but the 

concentration at each traverse point differs from the mean 

concentration for all traverse points by no more than: (a) ±10.0 

percent of the mean; or (b) ±1.0 ppm (whichever is less restrictive), 

the gas stream is considered to be minimally stratified, and you may 

take samples from three points. Space the three points at 16.7, 50.0, 

and 83.3 percent of the measurement line. Alternatively, if a 12

point stratification test was performed and the emissions shown to be 

minimally stratified (all points within ± 10.0 percent of their mean 

or within ±1.0 ppm), and if the stack diameter (or equivalent 

diameter for a rectangular stack or duct) is greater than 2.4 meters 

(7.8 ft), then you may use 3-point sampling and locate the three 

points along the measurement line exhibiting the highest average 

concentration during the stratification test at 0.4, 1.2, and 2.0 

meters from the stack or duct wall. If the gas stream is found to be 

stratified because the 10.0 percent or 1.0 ppm criterion for a 3-

point test is not met, locate 12 traverse points for the test in 

accordance with Table 1-1 or Table 1-2 of Method 1. This 

stratification test may not be meaningful at sources with temporally

varying emissions or where emission concentrations are low. In these 

cases, the stratification test is not required.

* * * * *

8.2.5 Initial System Bias and System Calibration Error Checks.

Before sampling begins, determine whether the high-level or mid-level 

calibration gas best approximates the emissions and use it as the 
Page 102 of 181

upscale gas. Introduce the upscale gas at the probe upstream of all 

sample conditioning components in system calibration mode. Record the 

time it takes for the measured concentration to increase to a value 

that is within 95 percent or 0.5 ppm (whichever is less restrictive) 

of a stable response for both the low-level and upscale gases. 

Continue to observe the gas concentration reading until it has 

reached a final, stable value. Record this value on a form similar to 

Table 7E–2.

* * * * *

16.2.2 Bag Procedure. Perform the analyzer calibration error 

test to document the calibration (both NO and NOX modes, as 

applicable). Fill a Tedlar or equivalent bag approximately half full 

with either ambient air, pure oxygen, or an oxygen standard gas with 

at least 19.5 percent by volume oxygen content. Fill the remainder of 

the bag with mid- to high-level NO in N2 (or other appropriate 

concentration) calibration gas. (Note that the concentration of the 

NO standard should be sufficiently high enough for the diluted 

concentration to be easily and accurately measured on the scale used. 

The size of the bag should be large enough to accommodate the 

procedure and time required. Contact the bag manufacturer for 

guidance on the applicability of Tedlar equivalent materials for NO.)

* * * * *

34. In Method 8 of Appendix A-4 by revising Sections 11.2.1 and

11.2.2, by revising two definitions in Section 12.1, and by revising 

Figure 8-1 as follows:
Page 103 of 181

Method 8 – Determination of Sulfuric Acid Mist and Sulfur Dioxide 

Emissions From Stationary Sources

* * * * *

11.2.1 Container No. 1. Shake the container holding the 

isopropanol solution and the filter. If the filter breaks up, allow 

the fragments to settle for a few minutes before removing a sample 

aliquot. For determination of SO3/H2SO4 concentration, pipette a 10-ml 

aliquot of this solution into a 250-ml Erlenmeyer flask, add 2 to 4 

drops of thorin indicator, and titrate to a pink endpoint using 

0.0100 N barium standard solution. Repeat the titration with a second 

aliquot of sample, and average the titration values. Replicate 

titrations must agree within 1 percent or 0.2 ml, whichever is 

greater.

11.2.2 Container No. 2. Thoroughly mix the solution in the 

container holding the contents of the second and third impingers. For 

determination of SO2 concentration, pipette a 100-ml aliquot of sample 

into a 250-ml Erlenmeyer flask. Add 40 ml of isopropanol, 2 to 4 

drops of thorin indicator, and titrate to a pink endpoint using 

0.0100 N barium standard solution. Repeat the titration with a second 

aliquot of sample, and average the titration values. Replicate 

titrations must agree within 1 percent or 0.2 ml, whichever is

greater.

* * * * *

12.1 * * * 
Page 104 of 181

Va = Volume of sample aliquot titrated, 10 ml for H2SO4 and 100 ml 

for SO2.

Vsoln = Total volume of solution in which the sample is contained, 

1000 ml for the SO2 sample and 250 ml for the H2SO4 sample.

* * * * *

Temperature

Ice 

Bath

Vacuum

Line

Dry Gas

Meter

Main

Valve

Vacuum

Gauge

By-pass

Valve

Pump

Orifice

Sensors

Manometer

Impingers Silica Gel

Temperature 

Sensor

Type S

Pitot Tube

Probe

Temperature

Sensor

Temperature

Sesnor

Stack

Wall

Heat Traced 

Glass-Lined 

Probe

Manometer

Type S Pitot Tube

Filter

 Holder SO 

Components

2

H SO /SO 

Components

2 4 3

Figure 8-1. Sulfuric Acid Sampling Train.

* * * * *

35. In Method 10 of Appendix A-4 by revising Sections 6.2.5 and 

8.4.2 as follows:
Page 105 of 181

Method 10 – Determination of Carbon Monoxide Emissions From 

Stationary Sources

* * * * *

6.2.5 Flexible Bag. Tedlar, or equivalent, with a capacity of 

60 to 90 liters (2 to 3 ft3). (Contact the bag manufacturer for 

guidance on the applicability of Tedlar equivalent materials for the 

compound of interest.) Leak-test the bag in the laboratory before 

using by evacuating with a pump followed by a dry gas meter. When the 

evacuation is complete, there should be no flow through the meter. 

Gas tanks may be used in place of bags if the samples are analyzed 

within one week.

* * * * *

8.4.2 Integrated Sampling. Evacuate the flexible bag. Set up 

the equipment as shown in Figure 10–1 with the bag disconnected. 

Place the probe in the stack and purge the sampling line. Connect the 

bag, making sure that all connections are leak-free. Sample at a rate 

proportional to the stack velocity. If needed, the CO2 content of the 

gas may be determined by using the Method 3 integrated sample 

procedures, or by weighing an ascarite CO2 removal tube used and 

computing CO2 concentration from the gas volume sampled and the weight 

gain of the tube. Data may be recorded on a form similar to Table 10–

1. If a tank is used for sample collection, follow procedures similar 

to those in Sections 8.1.2, 8.2.3, 8.3, and 12.4 of Method 25 as 

appropriate to prepare the tank, conduct the sampling, and correct 

the measured sample concentration.
Page 106 of 181

* * * * *

25. In Method 10A of Appendix A-4 by revising Sections 2.0, 

8.2.1, 8.2.3, 11.1, 11.2, and 13.5 and by revising the narrative in 

Section 12.3 as follows:

Method 10A — Determination of Carbon Monoxide Emissions in Certifying 

Continuous Emission Monitoring Systems at Petroleum Refineries

* * * * *

2.0 Summary of Method

An integrated gas sample is extracted from the stack, passed 

through an alkaline permanganate solution to remove sulfur oxides and 

nitrogen oxides, and collected in a Tedlar or equivalent bag. 

(Contact the bag manufacturer for guidance on the applicability of 

Tedlar equivalent materials for the compound of interest.) The CO 

concentration in the sample is measured spectrophotometrically using 

the reaction of CO with p-sulfaminobenzoic acid.

* * * * *

8.2.1 Evacuate the bag completely using a vacuum pump. 

Assemble the apparatus as shown in Figure 10A–1. Loosely pack glass 

wool in the tip of the probe. Place 400 ml of alkaline permanganate 

solution in the first two impingers and 250 ml in the third. Connect 

the pump to the third impinger, and follow this with the surge tank, 

rate meter, and 3-way valve. Do not connect the bag to the system at 

this time.

* * * * *
Page 107 of 181

8.2.3 Purge the system with sample gas by inserting the probe 

into the stack and drawing the sample gas through the system at 300 

ml/min ±10 percent for 5 minutes. Connect the evacuated bag to the 

system, record the starting time, and sample at a rate of 300 ml/min 

for 30 minutes, or until the bag is nearly full. Record the sampling 

time, the barometric pressure, and the ambient temperature. Purge the 

system as described above immediately before each sample.

* * * * *

11.1 Assemble the system shown in Figure 10A–3, and record the 

information required in Table 10A–1 as it is obtained. Pipet 10.0 ml 

of the colorimetric reagent into each gas reaction bulb, and attach 

the bulbs to the system. Open the stopcocks to the reaction bulbs, 

but leave the valve to the bag closed. Turn on the pump, fully open 

the coarse-adjust flow valve, and slowly open the fine-adjust valve 

until the pressure is reduced to at least 40 mm Hg. Now close the 

coarse adjust valve, and observe the manometer to be certain that the 

system is leak-free. Wait a minimum of 2 minutes. If the pressure has 

increased less than 1 mm Hg, proceed as described below. If a leak is 

present, find and correct it before proceeding further.

11.2 Record the vacuum pressure (Pv) to the nearest 1 mm Hg, and 

close the reaction bulb stopcocks. Open the bag valve, and allow the 

system to come to atmospheric pressure. Close the bag valve, open the 

pump coarse adjust valve, and evacuate the system again. Repeat this 

fill/evacuation procedure at least twice to flush the manifold 

completely. Close the pump coarse adjust valve, open the bag valve, 
Page 108 of 181

and let the system fill to atmospheric pressure. Open the stopcocks 

to the reaction bulbs, and let the entire system come to atmospheric 

pressure. Close the bulb stopcocks, remove the bulbs, record the room 

temperature and barometric pressure (Pbar, to nearest mm Hg), and 

place the bulbs on the shaker table with their main axis either 

parallel to or perpendicular to the plane of the table top. Purge the 

bulb-filling system with ambient air for several minutes between 

samples. Shake the samples for exactly 2 hours.

* * * * *

12.3 CO Concentration in the Bag. Calculate Cb using Equations 

10A–2 and 10A–3. If condensate is visible in the bag, calculate Bw

using Table 10A–2 and the temperature and barometric pressure in the 

analysis room. If condensate is not visible, calculate Bw using the 

temperature and barometric pressure at the sampling site. * * * 

* * * * *

13.5 Stability. The individual components of the colorimetric 

reagent are stable for at least one month. The colorimetric reagent 

must be used within two days after preparation to avoid excessive 

blank correction. The samples in the bag should be stable for at 

least one week if the bags are leak-free.

* * * * *

25. In Method 10B of Appendix A-4 by revising Sections 2.1 and

6.2.3 and by revising the narrative in Section 12.2 as follows:

Method 10B — Determination of Carbon Monoxide Emissions From 

Stationary Sources
Page 109 of 181

* * * * *

2.1 An integrated gas sample is extracted from the sampling 

point, passed through a conditioning system to remove interferences, 

and collected in a Tedlar or equivalent bag. (Contact the bag 

manufacturer for guidance on the applicability of Tedlar equivalent 

materials for the compound of interest.) The CO is separated from the 

sample by gas chromatography (GC) and catalytically reduced to 

methane (CH4) which is determined by flame ionization detection (FID). 

The analytical portion of this method is identical to applicable 

sections in Method 25 detailing CO measurement.

* * * * *

6.2.3 Sample Injection System. Same as in Method 25, Section 

6.3.1.4, equipped to accept a sample line from the bag.

* * * * *

12.2 CO Concentration in the Bag. Calculate Cb using Equations 

10B–1 and 10B–2. If condensate is visible in the bag, calculate Bw

using Table 10A–2 of Method 10A and the temperature and barometric 

pressure in the analysis room. If condensate is not visible, 

calculate Bw using the temperature and barometric pressure at the 

sampling site. * * *

* * * * *

36. In Method 11 of Appendix A-5 by revising Sections 8.5 and 

10.1.2 as follows:

Method 11 — Determination of Hydrogen Sulfide Content of Fuel Gas 

Streams in Petroleum Refineries
Page 110 of 181

* * * * *

8.5 Sample for at least 10 minutes. At the end of the sampling 

time, close the sampling valve, and record the final volume and 

temperature readings. Conduct a leak-check as described in Section 

8.2. A yellow color in the final cadmium sulfate impinger indicates 

depletion of the absorbing solution. An additional cadmium sulfate 

impinger should be added for subsequent samples and the sample with 

yellow color in the final impinger should be voided.

* * * * *

10.1.2 Temperature Sensors. Calibrate against mercury-in-glass 

thermometers. An alternative mercury-free thermometer may be used if 

the thermometer is at a minimum equivalent in terms of performance or 

suitably effective for the specific temperature measurement 

application.

* * * * *

37. In Method 12 of Appendix A-5 by revising Section 16.1 and 

adding Sections 16.4, 16.4.1, and 16.4.2 as follows:

Method 12 – Determination of Inorganic Lead Emissions From Stationary 

Sources

* * * * *

16.1 Simultaneous Determination of Particulate Matter and Lead 

Emissions. Method 12 may be used to simultaneously determine Pb 

provided: (1) acetone is used to remove particulate from the probe 

and inside of the filter holder as specified by Method 5, (2) 0.1 N 

HNO3 is used in the impingers, (3) a glass fiber filter with a low Pb 
Page 111 of 181

background is used, and (4) the entire train contents, including the 

impingers, are treated and analyzed for Pb as described in Sections 

8.0 and 11.0 of this method.

* * * * *

16.4 Alternative Analyzer. Inductively coupled plasma-atomic 

emission spectrometry (ICP-AES) may be used as an alternative to 

atomic absorption analysis provided the following conditions are met:

16.4.1 Sample collection, sample preparation, and analytical 

preparation procedures are as defined in the method except as 

necessary for the ICP-AES application.

16.4.2 The limit of quantitation for the ICP-AES must be 

demonstrated, and the sample concentrations reported should be no 

less than two times the limit of quantitation. The limit of 

quantitation is defined as ten times the standard deviation of the 

blank value. The standard deviation of the blank value is determined 

from the analysis of seven blanks. It has been reported that for 

mercury and those elements that form hydrides, a continuous-flow 

generator coupled to an ICP-AES offers detection limits comparable to 

cold vapor atomic absorption.

* * * * *

38. In Method 14A of Appendix A-5 by adding a sentence to 

Section 10.1.1 as follows:

Method 14A — Determination of Total Fluoride Emissions from Selected 

Sources at Primary Aluminum Production Facilities

* * * * *
Page 112 of 181

10.1.1 Metering system. * * * 

Allowable tolerances for Y and ΔH@ are given in Figure 5–5 of 

Method 5 of this appendix.

* * * * *

39. In Method 16A of Appendix A-6 by revising Section 1.2 as 

follows:

Method 16A — Determination of Total Reduced Sulfur Emissions From 

Stationary Sources (Impinger Technique)

* * * * *

1.2 Applicability. This method is applicable for the 

determination of TRS emissions from recovery boilers, lime kilns, and 

smelt dissolving tanks at kraft pulp mills, reduced sulfur compounds 

(H2S, carbonyl sulfide, and carbon disulfide) from sulfur recovery 

units at onshore natural gas processing facilities, and from other 

sources when specified in an applicable subpart of the regulations. 

The flue gas must contain at least 1 percent oxygen for complete 

oxidation of all TRS to SO2. Note: If sources other than kraft pulp 

mills experience low oxygen levels in the emissions, the method 

results may be biased low.

* * * * *

40. In Method 18 of Appendix A-6 by revising Sections 

8.2.1.1.2, 8.2.1.4, 8.2.1.4.2, 8.2.1.5.2.2, 16.1.1.12, 16.1.3.2, and 

the titles to Figures 18-3 and 18-10 as follows:

Method 18 — Measurement of Gaseous Organic Compound Emissions By Gas 

Chromatography
Page 113 of 181

* * * * *

8.2.1.1.2 Sampling Procedure. To obtain a sample, assemble the 

sample train as shown in Figure 18–9. Leak-check both the bag and the 

container. Connect the vacuum line from the needle valve to the 

Teflon sample line from the probe. Place the end of the probe at the 

centroid of the stack or at a point no closer to the walls than 1 m, 

and start the pump. Set the flow rate so that the final volume of the 

sample is approximately 80 percent of the bag capacity. After 

allowing sufficient time to purge the line several times, connect the 

vacuum line to the bag, and evacuate until the rotameter indicates no 

flow. Then position the sample and vacuum lines for sampling, and 

begin the actual sampling, keeping the rate proportional to the stack 

velocity. As a precaution, direct the gas exiting the rotameter away 

from sampling personnel. At the end of the sample period, shut off 

the pump, disconnect the sample line from the bag, and disconnect the 

vacuum line from the bag container. Record the source temperature, 

barometric pressure, ambient temperature, sampling flow rate, and 

initial and final sampling time on the data sheet shown in Figure 18–

10. Protect the bag and its container from sunlight. Record the time 

lapsed between sample collection and analysis, and then conduct the 

recovery procedure in Section 8.4.2.

* * * * *

8.2.1.4 Other Modified Bag Sampling Procedures. In the event 

that condensation is observed in the bag while collecting the sample 

and a direct interface system cannot be used, heat the bag during 
Page 114 of 181

collection and maintain it at a suitably elevated temperature during 

all subsequent operations. (Note: Take care to leak-check the system 

prior to the dilutions so as not to create a potentially explosive 

atmosphere.) As an alternative, collect the sample gas, and 

simultaneously dilute it in the bag.

* * * * *

8.2.1.4.2 Second Alternative Procedure. Prefill the bag with a 

known quantity of inert gas. Meter the inert gas into the bag 

according to the procedure for the preparation of gas concentration 

standards of volatile liquid materials (Section 10.1.2.2), but 

eliminate the midget impinger section. Take the partly filled bag to 

the source, and meter the source gas into the bag through heated 

sampling lines and a heated flowmeter, or Teflon positive 

displacement pump. Verify the dilution factors before sampling each 

bag through dilution and analysis of gases of known concentration.

* * * * *

8.2.1.5.2.2 Analyze the two field audit samples as described in 

Section 9.2 by connecting each bag containing an audit gas mixture to 

the sampling valve. Calculate the results; record and report the data 

to the audit supervisor.

* * * * *

16.1.1.12 Flexible Bags. Tedlar or equivalent, 10- and 50-liter 

capacity, for preparation of standards. (Contact the bag manufacturer 

for guidance on the applicability of Tedlar equivalent materials for 

the compound of interest.) 
Page 115 of 181

* * * * *

16.1.3.2 Flexible Bag Procedure. Any leak-free plastic (e.g., 

Tedlar, Mylar, Teflon) or plastic-coated aluminum (e.g., aluminized 

Mylar) bag, or equivalent, can be used to obtain the pre-survey 

sample. Use new bags, and leak-check them before field use. In 

addition, check the bag before use for contamination by filling it 

with nitrogen or air and analyzing the gas by GC at high sensitivity. 

Experience indicates that it is desirable to allow the inert gas to 

remain in the bag about 24 hours or longer to check for desorption of 

organics from the bag. Follow the leak-check and sample collection 

procedures given in Section 8.2.1.

* * * * *

Figure 18–3. Preparation of Standards in Tedlar or Tedlar-Equlivalent 

Bags and Calibration Curve

* * * * *

Figure 18–10. Field Sample Data Sheet—Tedlar or Tedlar-Equivalent Bag 

Collection Method

* * * * *

41. In Method 23 of Appendix A-7 by revising Sections 2.2.7, 

4.1.1.3, and 4.2.7 as follows:

Method 23 — Determination of Polychlorinated Dibenzo-p-Dioxins and 

Polychlorinated Dibenzofurans From Stationary Sources

* * * * *

2.2.7 Storage Container. Air-tight container to store silica 

gel.
Page 116 of 181

* * * * *

4.1.1.3 Sample Train. It is suggested that all components be 

maintained according to the procedure described in APTD-0576. 

Alternative mercury-free thermometers may be used if the thermometers 

are, at a minimum, equivalent in terms of performance or suitably 

effective for the specific temperature measurement application.

* * * * *

4.2.7 Silica Gel. Note the color of the indicating silica gel 

to determine if it has been completely spent and make a mention of 

its condition. Transfer the silica gel from the fifth impinger to its 

original container and seal. If a moisture determination is made, 

follow the applicable procedures in sections 8.7.6.3 and 11.2.3 of 

Method 5 to handle and weigh the silica gel. If moisture is not 

measured, the silica gel may be disposed.

* * * * *

42. In Method 24 of Appendix A-7 by revising Section 11.2.2 as 

follows:

Method 24 — Determination of Volatile Matter Content, Water Content, 

Density, Volume Solids, and Weight Solids of Surface Coatings

* * * * *

11.2.2 Volatile Content. To determine total volatile content, 

use the apparatus and reagents described in ASTM D2369 (incorporated 

by reference—see §60.17 for the approved versions of the standard), 

respectively, and use the following procedures:

* * * * *
Page 117 of 181

43. In Method 25 of Appendix A-7 by revising Section 7.1.3 as 

follows:

Method 25 – Determination of Total Gaseous Nonmethane Organic 

Emissions as Carbon

* * * * *

7.1.3 Filters. Glass fiber filters, without organic binder, 

exhibiting at least 99.95 percent efficiency (<0.05 percent 

penetration) on 0.3 micron dioctyl phthalate smoke particles. The 

filter efficiency test shall be conducted in accordance with ASTM 

Method D2986-71, 78, or 95a (incorporated by reference – see §60.17). 

Test data from the supplier’s quality control program are sufficient 

for this purpose.

* * * * *

44. In Method 25C of Appendix A-7 by revising Sections 6.1 and 

12.1, redesignating Equation 25C-2 in Section 12.3 as Equation 25C-3, 

redesignating Section 12.3 as 12.4, and adding new Sections 8.2.3 and 

12.3 as follows:

Method 25C – Determination of Nonmethane Organic Compounds (NMOC) in 

MSW Landfill Gases

* * * * *

6.1 Sample Probe. Stainless steel, with the bottom third 

perforated. Teflon probe liners and sampling lines are also allowed. 

Non-perforated probes are allowed as long as they are withdrawn to 

create a gap equivalent to having the bottom third perforated. The 

sample probe must be capped at the bottom and must have a threaded 
Page 118 of 181

cap with a sampling attachment at the top. The sample probe must be 

long enough to go through and extend no less than 0.9 m (3 ft) below 

the landfill cover. If the sample probe is to be driven into the 

landfill, the bottom cap should be designed to facilitate driving the 

probe into the landfill.

* * * * *

8.2.3 Driven Probes. Closed-point probes may be driven directly 

into the landfill in a single step. This method may not require 

backfilling if the probe is adequately sealed by its insertion. 

Unperforated probes that are inserted in this manner and withdrawn a 

distance from a detachable tip to create an open space are also 

acceptable.

* * * * *

12.1 Nomenclature.

Bw = Moisture content in the sample, fraction.

CN2 = Measured N2concentration (by Method 3C), fraction.

CN2Corr = Measured N2 concentration corrected for dilution, 

fraction.

Ct = Calculated NMOC concentration, ppmv C equivalent.

Ctm = Measured NMOC concentration, ppmv C equivalent.

Pb = Barometric pressure, mm Hg.

Pt = Gas sample tank pressure after sampling, but before 

pressurizing, mm Hg absolute.

Ptf = Final gas sample tank pressure after pressurizing, mm Hg 

absolute.
Page 119 of 181

Pti = Gas sample tank pressure after evacuation, mm Hg absolute.

Pw = Vapor pressure of H2O (from Table 25C–1), mm Hg.

r = Total number of analyzer injections of sample tank during 

analysis (where j=injection number, 1 * * * r).

Tt = Sample tank temperature at completion of sampling, °K.

Tti = Sample tank temperature before sampling, °K.

Ttf = Sample tank temperature after pressurizing, °K.

* * * * *

12.3 Measured N2 Concentration Correction. Use the following 

equation to correct the measured concentration of N2 as determined by 

Method 3C for dilution.

 =









−





 . 25 − 2

* * * * *

45. In Method 25D of Appendix A-7 by revising the first 

sentence in Section 9.1 and revising Section 11.2 as follows: 

Method 25D — Determination of the Volatile Organic Concentration of 

Waste Samples

* * * * *

9.1 Quality Control Samples. If audit samples are not 

available, prepare and analyze the two types of quality control 

samples (QCS) listed in Sections 9.1.1 and 9.1.2. * * * 

* * * * *
Page 120 of 181

46. In Method 26 of Appendix A-8 by revising Sections 6.1.1 and 

8.1.2, by redesignating Section 16 as 17 and Section 17 as 18, and by 

adding a new Section 16 as follows:

Method 26 — Determination of Hydrogen Halide and Halogen Emissions 

From Stationary Sources Non-Isokinetic Method

* * * * *

6.1.1 Probe. Borosilicate glass, approximately 3/8-in. (9-mm) 

I.D. with a heating system capable of maintaining a probe gas 

temperature during sampling of 120 ±14 °C (248 ±25 °F) to prevent

moisture condensation; or Teflon where stack probes are below 210C. 

If HF is a target analyte, then preconditioning of new teflon 

components by heating should be considered to prevent potential HF 

outgassing. A Teflon-glass filter in a mat configuration should be 

installed in the gas stream, not the filter box, to remove 

particulate matter from the gas stream (see Section 6.1.6).

* * * * *

8.1.2 Adjust the probe temperature and the temperature of the 

filter and the stopcock (i.e., the heated area in Figure 26–1) to a 

temperature sufficient to prevent water condensation. This 

temperature should be greater than 120°C (248°F). The temperature 

should be monitored throughout a sampling run to ensure that the 

desired temperature is maintained. It is important to maintain a 

temperature around the probe and filter of greater than 120°C (248 

°F) since it is extremely difficult to purge acid gases off these 

components. (These components are not quantitatively recovered and,
Page 121 of 181

hence, any collection of acid gases on these components would result 

in potential undereporting of these emissions. The applicable 

subparts may specify alternative higher temperatures.)

* * * * *

16.0 Alternative Procedures

Method 26A. Method 26A, which uses isokinetic sampling 

equipment, is an acceptable alternative to Method 26.

* * * * *

47. In Method 29 of Appendix A-8 by redesignating Section 16 as 

Section 17 and redesignating Section 17 as Section 18 and by adding a 

new Section 16 as follows:

Method 29 – Determination of Metals Emissions From Stationary Sources

* * * * *

16.0 Alternative Procedures

16.1 Alternative Analyzer. Samples may also be analyzed by cold 

vapor atomic fluorescence spectrometry.

* * * * *

48. In Method 30B of Appendix A-8 by revising Table 9-1 in 

Section 9 and revising Section 10.3 as follows:

Method 30B — Determination of Total Vapor Phase Mercury Emissions 

From Coal-Fired Combustion Sources Using Carbon Sorbent Traps

* * * * *

9.0 Quality Assurance and Quality Control

* * * 

Table 9–1 — Quality Assurance/Quality Control Criteria for Method 30B
Page 122 of 181

QA/QC test or 

specification

Acceptance 

criteria

Frequency Consequences if 

not met

Gas flow meter 

calibration (At 

3 settings or 

points)

Calibration 

factor (Yi) at 

each flow rate 

must be within 

±2% of the 

average value 

(Y)

Prior to 

initial use and 

when post-test 

check is not 

within ±5% of Y

Recalibrate at 

3 points until 

the acceptance 

criteria are 

met.

Gas flow meter 

post-test 

calibration 

check (Singlepoint)

Calibration

factor (Yi) 

must be within 

±5% of the Y 

value from the 

most recent 3-

point 

calibration

After each 

field test. For 

mass flow 

meters, must be 

done on-site, 

using stack gas

Recalibrate gas 

flow meter at 3 

points to 

determine a new 

value of Y. For 

mass flow 

meters, must be 

done on-site, 

using stack 

gas. Apply the 

new Y value to 

the field test 

data.

Temperature 

sensor 

calibration

Absolute 

temperature 

measures by 

sensor within 

±1.5% of a 

reference 

sensor

Prior to 

initial use and 

before each 

test thereafter

Recalibrate; 

sensor may not 

be used until 

specification 

is met.

Barometer 

calibration

Absolute 

pressure 

measured by 

instrument 

within ±10 mm 

Hg of reading 

with a mercury 

barometer or 

NIST traceable 

barometer

Prior to 

initial use and 

before each 

test thereafter

Recalibrate; 

instrument may 

not be used 

until 

specification 

is met.

Pre-test leak ≤4% of target Prior to Sampling shall 
Page 123 of 181

check sampling rate sampling not commence 

until the leak 

check is 

passed.

Post-test leak 

check

≤4% of average 

sampling rate

After sampling Sample 

invalidated.*

Analytical 

matrix 

interference 

test (wet 

chemical 

analysis, only)

Establish 

minimum 

dilution (if 

any) needed to 

eliminate 

sorbent matrix 

interferences

Prior to 

analyzing any 

field samples; 

repeat for each 

type of sorbent 

used

Field sample 

results not 

validated.

Analytical bias 

test

Average 

recovery 

between 90% and 

110% for Hg0and 

HgCl2at each of 

the 2 spike 

concentration 

levels

Prior to 

analyzing field 

samples and 

prior to use of 

new sorbent 

media

Field samples 

shall not be 

analyzed until 

the percent 

recovery 

criteria has 

been met.

Multipoint 

analyzer 

calibration

Each analyzer 

reading within 

±10% of true 

value and

r

2≥0.99

On the day of 

analysis, 

before 

analyzing any 

samples

Recalibrate 

until 

successful.

Analysis of 

independent 

calibration 

standard

Within ±10% of 

true value

Following daily 

calibration, 

prior to 

analyzing field 

samples

Recalibrate and 

repeat 

independent 

standard 

analysis until 

successful.

Analysis of 

continuing 

calibration 

verification 

standard (CCVS)

Within ±10% of 

true value

Following daily 

calibration, 

after analyzing 

≤10 field 

samples, and at 

end of each set 

of analyses

Recalibrate and 

repeat 

independent 

standard 

analysis, 

reanalyze 

samples until 

successful, if 
Page 124 of 181

possible; for 

destructive 

techniques, 

samples 

invalidated.

Test run total 

sample volume

Within ±20% of 

total volume 

sampled during 

field recovery 

test

Each individual 

sample

Sample 

invalidated.

Sorbent trap 

section 2 

breakthrough

≤10% of section 

1 Hg mass for 

Hg 

concentrations 

> 1 μg/dscm;

Every sample Sample 

invalidated.*

≤20% of section 

1 Hg mass for 

Hg 

concentrations 

≤1 μg/dscm

Paired sorbent 

trap agreement

≤10% Relative 

Deviation (RD) 

mass for Hg 

concentrations 

>1 μg/dscm;

Every run Run 

invalidated.*

≤20% RD or ≤0.2 

μg/dscm 

absolute 

difference for 

Hg 

concentrations 

≤1 μg/dscm

Sample analysis Within valid 

calibration 

range (within 

calibration 

curve)

All Section 1 

samples where 

stack Hg 

concentation is 

≥0.5 μg/dscm

Reanalyze at 

more 

concentrated 

level if 

possible, 

samples 

invalidated if 

not within 
Page 125 of 181

calibrated 

range.

Sample analysis Within bounds 

of Hg0 and HgCl2

Analytical Bias 

Test

All Section 1 

samples where 

stack Hg 

concentration 

is ≥0.5 μg/dscm

Expand bounds 

of Hg0and HgCl2

Analytical Bias 

Test; if not 

successful, 

samples

invalidated.

Field recovery 

test

Average 

recovery 

between 85% and 

115% for Hg0

Once per field 

test

Field sample 

runs not 

validated 

without 

successful 

field recovery 

test.

*And data from the pair of sorbent traps are also invalidated.

* * * * *

10.3 Thermocouples and Other Temperature Sensors. Use the 

procedures and criteria in Section 10.3 of Method 2 in Appendix A–1 

to this part to calibrate in-stack temperature sensors and 

thermocouples. Dial thermometers shall be calibrated against mercuryin-glass thermometers or equivalent. * * * 

* * * * *

49. In Performance Specification 1 of Appendix B by revising

Section 3.5 to read as follows:

Performance Specification 1 — Specifications and Test Procedures for 

Continuous Opacity Monitoring Systems in Stationary Sources

* * * * *
Page 126 of 181

3.5 Full Scale. The maximum data display output of the COMS. 

For purposes of recordkeeping and reporting, full scale will be 

greater than 80 percent opacity.

Note: “Full scale” means “span.”

* * * * *

54. In Performance Specification 3 of Appendix B by revising 

Section 13.2 as follows:

Performance Specification 3 — Specifications and Test Procedures for 

O2 and CO2 Continuous Emission Monitoring Systems in Stationary 

Sources

* * * * *

13.2 CEMS Relative Accuracy Performance Specification. The RA 

of the CEMS must be no greater than 20 percent of the mean value of 

the RM test data or 1.0 percent O2 or CO2, whichever is greater.

* * * * *

55. In Performance Specification 4 of Appendix B by 

revising Section 8.2 as follows:

Performance Specification 4 — Specifications and Test Procedures for 

Carbon Monoxide Continuous Emission Monitoring Systems in Stationary 

Sources

* * * * *

8.2 Reference Methods. Unless otherwise specified in an 

applicable subpart of the regulation, Method 10, 10A, 10B or other 

approved alternative are the RM for this PS. 

* * * * *
Page 127 of 181

56. In Performance Specification 4B of Appendix B by revising 

Section 7.1.1 as follows:

Performance Specification 4B — Specifications and Test Procedures for 

Carbon Monoxide and Oxygen Continuous Monitoring Systems in 

Stationary Sources

* * * * *

7.1.1 Calculations. Summarize the results on a data sheet. 

Average the differences between the instrument response and the 

certified cylinder gas value for each gas. Calculate the CE results 

for the CO monitor according to:

CE = |d/FS| x 100 (1)

Where d is the mean difference between the CEMS response and the 

known reference concentration, and FS is the span value. The CE for 

the O2 monitor is the average percent O2 difference between the O2

monitor and the certified cylinder gas value for each gas.

* * * * *

57. In Performance Specification 7 of Appendix B by

revising Section 8.4 and adding a reference to the end of Section 

16.0.

Performance Specification 7 — Specifications and Test Procedures for 

Hydrogen Sulfide Continuous Emission Monitoring Systems in Stationary 

Sources

* * * * *

8.4 Relative Accuracy Test Procedure.
Page 128 of 181

8.4.1 Sampling Strategy for RM Tests, Number of RM Tests, 

Correlation of RM and CEMS Data, and Calculations. These are the same 

as that in PS-2, Sections 8.4.3 (except as specified below), 8.4.4, 

8.4.5, and 8.4.6, respectively.

8.4.2 Reference Methods. Unless otherwise specified in an 

applicable subpart of the regulation, Methods 11, 15, and 16 may be 

used for the RM for this PS.

8.4.2.1 Sampling Time Per Run - Method 11. A sampling run, when 

Method 11 (integrated sampling) is used, shall consist of a single 

measurement for at least 10 minutes and 0.010 dscm (0.35 dscf). Each 

sample shall be taken at approximately 30-minute intervals. 

8.4.2.2 Sampling Time Per Run - Methods 15 and 16. The sampling 

run shall consist of two injections equally spaced over a 30-minute 

period following the procedures described in the particular method. 

NOTE: Caution! Heater or non-approved electrical probes should not be 

used around explosive or flammable sources.

* * * * *

16.0 References.

* * * 

5. Letter to RAMCON Environmental Corp. from Robert Kellam, 

December 27, 1992.

* * * * *

58. In Performance Specification 11 of Appendix B by revising 

Sections 12.1(1) and (2) as follows:
Page 129 of 181

Performance Specification 11 — Specifications and Test Procedures for 

Particulate Matter Continuous Emission Monitoring Systems at 

Stationary Sources

* * * * *

12.1 * * * 

(1) Calculate the upscale drift (UD) using Equation 11–1:

UD =

||



× 100 (Eq. 11-1)

Where:

UD = The upscale (high-level) drift of your PM CEMS in percent,

RCEM= The measured PM CEMS response to the upscale reference 

standard, and

RU= The pre-established numerical value of the upscale reference 

standard.

FS= Full-scale value.

(2) Calculate the zero drift (ZD) using Equation 11–2:

ZD =

||



× 100 (Eq. 11-2)

Where:

ZD = The zero (low-level) drift of your PM CEMS in percent,

RCEM= The measured PM CEMS response to the zero reference 

standard,

RL= The pre-established numerical value of the zero reference 

standard, and

FS= Full-scale value.

* * * * *
Page 130 of 181

59. In Performance Specification 15 of Appendix B by

revising Sections 11.1.1.4.2 and 11.1.1.4.3 as follows:

Performance Specification 15 — Performance Specification for 

Extractive FTIR Continuous Emission Monitoring Systems in Stationary 

Sources

* * * * *

11.1.1.4.2 RMs Using a Grab Sampling Technique. Synchronize the 

RM and FTIR CEM measurements as closely as possible. For a grab 

sampling RM, record the volume collected and the exact sampling 

period for each sample. Synchronize the FTIR CEM so that the FTIR 

measures a spectrum of a similar cell volume at the same time as the 

RM grab sample was collected. Measure at least five independent 

samples with both the FTIR CEM and the RM for each of the minimum 

nine runs. Compare the run concentration averages by using the 

relative accuracy analysis procedure in Performance Specification 2 

of Appendix B of 40 CFR Part 60.

11.1.1.4.3 Continuous Emission Monitors as RMs. If the RM is a 

CEM, synchronize the sampling flow rates of the RM and the FTIR CEM. 

Each run is at least 1 hour long and consists of at least 10 FTIR CEM 

measurements and the corresponding 10 RM measurements (or averages). 

For the statistical comparison, use the relative accuracy analysis 

procedure in Performance Specification 2 of Appendix B of 40 CFR Part 

60. If the RM time constant is < 1⁄2 the FTIR CEM time constant, brief 

fluctuations in analyte concentrations that are not adequately 

measured with the slower FTIR CEM time constant can be excluded from 
Page 131 of 181

the run average along with the corresponding RM measurements. 

However, the FTIR CEM run average must still include at least 10 

measurements over a 1-hour period.

* * * * *

60. In Performance Specification 16 of Appendix B by

revising Sections 6.1.7, 8.2.1, 9.1, 9.3, 9.4, 12.4, and 13.5 as 

follows:

Performance Specification 16 — Specifications and Test Procedures for 

Predictive Emission Monitoring Systems in Stationary Sources

* * * * *

6.1.7 Sensor Location and Repair. We recommend you install 

sensors in an accessible location in order to perform repairs and 

replacements. Permanently-installed platforms or ladders may not be 

needed. If you install sensors in an area that is not accessible, you 

may be required to shut down the emissions unit to repair or replace 

a sensor. Conduct a new RATA after replacing a sensor that supplies a 

critical PEMS parameter if the new sensor provides a different output 

or scaling or changes the historical training dataset of the PEMS.

Replacement of a non-critical sensor that does not cause an impact in 

the accuracy of the PEMS does not trigger a RATA. All sensors must be 

calibrated as often as needed but at least as often as recommended by 

the manufacturers.

* * * * *
Page 132 of 181

8.2.1 Reference Methods. Unless otherwise specified in the 

applicable regulations, you must use the test methods in Appendix A 

of this part for the RM test. Conduct the RM tests at three operating 

levels. The RM tests shall be performed at a low-load (or production) 

level between the minimum safe, stable load and 50 percent of the 

maximum level load, at the mid-load level (an intermediary level 

between the low and high levels), and at a high-load level between 80 

percent and the maximum load. Alternatively, if practicable, you may 

test at three levels of the key operating parameter (e.g. selected 

based on a covariance analysis between each parameter and the PEMS 

output) equally spaced within the normal range of the parameter.

* * * * *

9.1 QA/QC Summary. Conduct the applicable ongoing tests listed 

below.
Page 133 of 181

 Ongoing Quality Assurance Tests

 Test PEMS 

Regulatory 

Purpose

 

Acceptability

 

Frequency

Sensor 

Evaluation 

Check

All Daily

RAA Compliance 3-test avg

≤10% of 

simultaneous 

analyzer or 

RM average

Each quarter 

except 

quarter when 

RATA 

performed

RATA All Same as for 

RA in Sec. 

13.1

Yearly in 

quarter when 

RAA not 

performed

Bias 

Correction

All If davg ≤ cc Bias test 

passed (no 

correction 

factor 

needed)

PEMS Training All If Fcritical F

 r 0.8

Optional 

after initial 

and 

subsequent 

RATAs

Sensor 

Evaluation 

Alert Test

(optional)

All See Section 

6.1.8

After each 

PEMS training

* * * * *

9.3 Quarterly Relative Accuracy Audits. In the first year of 

operation after the initial certification, perform a RAA consisting 

of at least three 30-minute portable analyzer or RM determinations 
Page 134 of 181

each quarter a RATA is not performed. To conduct a RAA, follow the 

procedures in Section 8.2 for the relative accuracy test, except that 

only three sets of measurement data are required, and the statistical 

tests are not required. The average of the three or more portable 

analyzer or RM determinations must not exceed the limits given in 

Section 13.5. Report the data from all sets of measurement data. If a 

PEMS passes all quarterly RAAs in the first year and also passes the 

subsequent yearly RATA in the second year, you may elect to perform a 

single mid-year RAA in the second year in place of the quarterly 

RAAs. This option may be repeated, but only until the PEMS fails

either a mid-year RAA or a yearly RATA. When such a failure occurs, 

you must resume quarterly RAAs in the quarter following the failure 

and continue conducting quarterly RAAs until the PEMS successfully 

passes both a year of quarterly RAAs and a subsequent RATA.

9.4 Yearly Relative Accuracy Test. Perform a minimum 9-run RATA 

at the normal operating level on a yearly basis in the quarter that 

the RAA is not performed. The statistical tests in Section 8.3 are 

not required for the yearly RATA.

* * * * *

12.4 Relative Accuracy Audit. Calculate the quarterly RAA using 

Equation 16-9.

x 100

RM

PEMS RM RAA 

 Eq. 16-9

* * * * *
Page 135 of 181

13.5 Relative Accuracy Audits. The average of the three

portable analyzer or RM determinations must not differ from the 

simultaneous PEMS average value by more than 10 percent of the 

analyzer or RM for concentrations greater than 100 ppm or 20 percent 

for concentrations between 100 and 20 ppm, or the test is failed. For 

measurements at 20 ppm or less, this difference must not exceed 2 ppm

for a pollutant PEMS and 1 percent absolute for a diluents PEMS.

* * * * *

61. In Procedure 1 of Appendix F by revising Section 6.2 as 

follows:

Procedure 1 — Quality Assurance Requirements for Gas Continuous 

Emission Monitoring Systems Used for Compliance Determination

* * * * *

6.2 RAA Accuracy Calculation. Use the calculation procedure in 

the relevant performance specification to calculate the accuracy for 

the RAA. The RAA must be calculated in the units of the applicable 

emission standard.

* * * * *

62. In Procedure 2 of Appendix F by revising paragraphs (3) and 

(4) in Section 12.0 as follows:

Procedure 2 — Quality Assurance Requirements for Particulate Matter 

Continuous Emission Monitoring Systems at Stationary Sources

* * * * *

12.0 * * * 
Page 136 of 181

(3) How do I calculate daily upscale and zero drift? You must 

calculate the upscale drift using Equation 2-2 and the zero drift 

using Equation 2-3: 

UD =

||



× 100 (Eq. 2-2)

Where:

UD = The upscale drift of your PM CEMS, in percent,

RCEM = Your PM CEMS response to the upscale check value, and

RU = The upscale check value.

FS = Full-scale value.

ZD =

||



× 100 (Eq. 2-3)

Where:

ZD = The zero (low-level) drift of your PM CEMS, in percent,

RCEM = Your PM CEMS response of the zero check value,

RL = The zero check value, and

* * * 

(4) How do I calculate SVA accuracy? You must use Equation 2-4 

to calculate the accuracy, in percent, for each of the three SVA 

tests or the daily sample volume check: 

Accuracy =

( )



× 100 (Eq. 2-4)

Where:

VM= Sample gas volume determined/reported by your PM CEMS (e.g., 

dscm),
Page 137 of 181

VR= Sample gas volume measured by the independent calibrated 

reference device (e.g., dscm) for the SVA or the reference value for 

the daily sample volume check.

Note: Before calculating SVA accuracy, you must correct the 

sample gas volumes measured by your PM CEMS and the independent 

calibrated reference device to the same basis of temperature, 

pressure, and moisture content. You must document all data and 

calculations.

* * * * *

63. In Procedure 5 of Appendix F by redesignating the second 

listing of Section 6.2.6 as Section 6.2.7. 

PART 61 – NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS

1. The authority citation for part 61 continues to read as 

follows: 42 U.S.C. 7401, et seq. 

§ 61.13 [Amended]

2. By revising § 61.13(e)(1)(i) to read as follows:

61.13 Emission tests and waiver of emission tests.

* * * * *

(e) * * *

(1) * * *

(i) The source owner, operator, or representative of the tested 

facility shall obtain an audit sample, if commercially available, 

from an AASP for each test method used for regulatory compliance 

purposes. No audit samples are required for the following test 
Page 138 of 181

methods: Methods 3A and 3C of Appendix A-3 of Part 60; Methods 6C, 

7E, 9, and 10 of Appendix A-4 of Part 60; Method 18 and 19 of 

Appendix A-6 of Part 60; Methods 20, 22, and 25A of Appendix A-7 of 

Part 60; and Methods 303, 318, 320, and 321 of Appendix A of Part 63.

If multiple sources at a single facility are tested during a 

compliance test event, only one audit sample is required for each 

method used during a compliance test. The compliance authority 

responsible for the compliance test may waive the requirement to 

include an audit sample if they believe that an audit sample is not 

necessary. “Commercially available” means that two or more 

independent AASPs have blind audit samples available for purchase. If 

the source owner, operator, or representative cannot find an audit 

sample for a specific method, the owner, operator, or representative 

shall consult the EPA web site at the following URL, 

www.epa.gov/ttn/emc, to confirm whether there is a source that can 

supply an audit sample for that method. If the EPA web site does not 

list an available audit sample at least 60 days prior to the 

beginning of the compliance test, the source owner, operator, or 

representative shall not be required to include an audit sample as 

part of the quality assurance program for the compliance test. When 

ordering an audit sample, the source owner, operator, or 

representative shall give the sample provider an estimate for the 

concentration of each pollutant that is emitted by the source or the 

estimated concentration of each pollutant based on the permitted 

level and the name, address, and phone number of the compliance 
Page 139 of 181

authority. The source owner, operator, or representative shall report 

the results for the audit sample along with a summary of the emission 

test results for the audited pollutant to the compliance authority 

and shall report the results of the audit sample to the AASP. The 

source owner, operator, or representative shall make both reports at 

the same time and in the same manner or shall report to the 

compliance authority first and report to the AASP. If the method 

being audited is a method that allows the samples to be analyzed in 

the field and the tester plans to analyze the samples in the field, 

the tester may analyze the audit samples prior to collecting the 

emission samples provided a representative of the compliance 

authority is present at the testing site. The tester may request, and 

the compliance authority may grant, a waiver to the requirement that 

a representative of the compliance authority must be present at the 

testing site during the field analysis of an audit sample. The source 

owner, operator, or representative may report the results of the 

audit sample to the compliance authority and then report the results 

of the audit sample to the AASP prior to collecting any emission 

samples. The test protocol and final test report shall document 

whether an audit sample was ordered and utilized and the pass/fail 

results as applicable.

* * * * *

§61.33 [Amended] 

3. By revising §61.33(a) as follows: 

§ 61.33 Stack sampling.
Page 140 of 181

(a) Unless a waiver of emission testing is obtained under 

§61.13, each owner or operator required to comply with §61.32(a) 

shall test emissions from the source according to Method 104 of 

Appendix B to this part or according to Method 29 of Appendix A to

Part 60. Method 103 of Appendix B to this part is approved by the 

Administrator as an alternative method for sources subject to 

§61.32(a). The emission test shall be performed—

(1) Within 90 days of the effective date in the case of an 

existing source or a new source which has an initial startup date 

preceding the effective date; or

(2) Within 90 days of startup in the case of a new source which 

did not have an initial startup date preceding the effective date.

* * * * *

4. By revising §61.42(a) as follows:

§ 61.42 Emission standard.

(a) Emissions to the atmosphere from rocket-motor test sites 

shall not cause time-weighted atmospheric concentrations of beryllium 

to exceed 75 microgram minutes per cubic meter (μg-min/m3) (4.68 x 10-

9 pound minutes per cubic foot (lb-min/ft3)) of air within the limits 

of 10 to 60 minutes, accumulated during any 2 consecutive weeks, in 

any area in which an adverse effect to public health could occur.

* * * * *

5. By revising §61.53(d)(2) as follows:
Page 141 of 181

§ 61.53 Stack sampling.

* * * * *

(d) * * * 

(2) Method 101A in Appendix B or Method 29 in Appendix A to part 

60 shall be used to test emissions as follows:

* * * * *

6. By revising §61.164(d)(2)(i), (e)(1)(i), and (e)(2) as 

follows:

§ 61.164 Test methods and procedures.

* * * * *

(d) * * * 

(2) * * * 

(i) Use Method 108 in Appendix B to this part or Method 29 in 

Appendix A to part 60 for determining the arsenic emission rate, g/hr 

(lb/hr). The emission rate shall equal the arithmetic mean of the 

results of three 60-minute test runs.

* * * * *

(e) * * * 

(1) * * * 

(i) Use Method 108 in Appendix B to this part or Method 29 in 

Appendix A to part 60 to determine the concentration of arsenic in 

the gas streams entering and exiting the control device. Conduct 

three 60-minute test runs, each consisting of simultaneous testing of 

the inlet and outlet gas streams. The gas streams shall contain all 

the gas exhausted from the glass melting furnace.
Page 142 of 181

* * * * *

(2) Calculate the percent emission reduction for each run as 

follows:

b

b a

C

C C x

D

(  ) 100



Where:

D = the percent emission reduction.

Cb = the arsenic concentration of the stack gas entering the 

control device, as measured by Method 108 or Method 29.

Ca = the arsenic concentration of the stack gas exiting the 

control device, as measured by Method 108 or Method 29.

* * * * *

7. In Method 101 of Appendix B by redesignating Section 16 as 

Section 17 and redesignating Section 17 as Section 18, and by adding 

a new Section 16 as follows:

Method 101 – Determination of Particulate and Gaseous Mercury 

Emissions From Chlor-Alkali Plants (Air Streams)

* * * * *

16.0 Alternative Procedures

16.1 Alternative Analyzer. Samples may also be analyzed by cold 

vapor atomic fluorescence spectrometry. 

* * * * *

8. In Method 101A of Appendix B by redesignating Section 16 

as Section 17 and redesignating Section 17 as Section 18, and by 

adding a new Section 16 as follows:
Page 143 of 181

Method 101A – Determination of Particulate and Gaseous Mercury 

Emissions From Sewage Sludge Incinerators

* * * * *

16.0 Alternative Procedures

16.1 Alternative Analyzers. 

16.1.1 Inductively coupled plasma-atomic emission spectrometry 

(ICP-AES) may be used as an alternative to atomic absorption analysis 

provided the following conditions are met:

16.1.1.1 Sample collection, sample preparation, and analytical 

preparation procedures are as defined in the method except as 

necessary for the ICP-AES application.

16.1.1.2 The quality control procedures are conducted as 

prescribed.

16.1.1.3 The limit of quantitation for the ICP-AES must be 

demonstrated and the sample concentrations reported should be no less 

than two times the limit of quantitation. The limit of quantitation 

is defined as ten times the standard deviation of the blank value. 

The standard deviation of the blank value is determined from the 

analysis of seven blanks. It has been reported that for mercury and 

those elements that form hydrides, a continuous-flow generator 

coupled to an ICP-AES offers detection limits comparable to cold 

vapor atomic absorption.

6.1.2 Samples may also be analyzed by cold vapor atomic 

fluorescence spectrometry. 

* * * * *
Page 144 of 181

9. In Method 102 in Appendix B by revising Section 8.1.1.1 as 

follows:

Method 102 – Determination of Particulate and Gaseous Mercury 

Emissions from Chlor-Alkali Plants (Hydrogen Streams)

* * * * *

8.1.1.1 Calibrate the meter box orifice. Use the techniques 

described in APTD-0576 (see Reference 9 in Section 17.0 of Method 5

of Appendix A to Part 60). Calibration of the orifice meter at flow 

conditions that simulate the conditions at the source is suggested. 

Calibration should either be done with hydrogen or with some other 

gas having a similar Reynolds Number so that there is similarity 

between the Reynolds Numbers during calibration and during sampling. 

Alternative mercury-free thermometers may be used if the thermometers 

are, at a minimum, equivalent in terms of performance or suitably 

effective for the specific temperature measurement application.

* * * * *

10. In Method 104 in Appendix B by revising Sections 4.1 and 

11.5.3, by redesignating Sections 16 and 17 as Sections 17 and 18 

respectively, and by adding a new Section 16 as follows:

Method 104 – Determination of Beryllium Emissions From Stationary 

Sources

* * * * *

4.1 Matrix Effects. Analysis for Be by flame atomic absorption 

spectrophotometry is sensitive to the chemical composition and to the 

physical properties (e.g., viscosity, pH) of the sample. Aluminum and 
Page 145 of 181

silicon, in particular, are known to interfere when present in 

appreciable quantities. The analytical procedure includes 

(optionally) the use of the Method of Standard Additions to check for 

these matrix effects, and sample analysis using the Method of 

Standard Additions if significant matrix effects are found to be 

present (see Reference 2 in Section 17.0).

* * * * *

11.5.3 Check for Matrix Effects (optional). Use the Method of 

Standard Additions (see Reference 2 in Section 17.0) to check at 

least one sample from each source for matrix effects on the Be 

results. If the results of the Method of Standard Additions procedure 

used on the single source sample do not agree to within 5 percent of 

the value obtained by the routine atomic absorption analysis, then 

reanalyze all samples from the source using the Method of Standard 

Additions procedure.

* * * * *

16.0 Alternative Procedures

16.1 Alternative Analyzer. Inductively coupled plasma-atomic 

emission spectrometry (ICP-AES) may be used as an alternative to 

atomic absorption analysis provided the following conditions are met:

16.1.1 Sample collection, sample preparation, and analytical 

preparation procedures are as defined in the method except as 

necessary for the ICP-AES application.
Page 146 of 181

16.1.2 Quality Assurance/Quality Control procedures, including 

audit material analysis, are conducted as prescribed in the method. 

The QA acceptance conditions must be met.

16.1.3 The limit of quantitation for the ICP-AES must be 

demonstrated and the sample concentrations reported should be no less 

than two times the limit of quantitation. The limit of quantitation 

is defined as ten times the standard deviation of the blank value. 

The standard deviation of the blank value is determined from the 

analysis of seven blanks. It has been reported that for mercury and 

those elements that form hydrides, a continuous-flow generator 

coupled to an ICP-AES offers detection limits comparable to cold 

vapor atomic absorption.

* * * * *

11. In Method 108 of Appendix B by redesignating Sections 16 

and 17 as Sections 17 and 18 respectively, and by adding a new 

Section 16 as follows:

Method 108 – Determination of Particulate and Gaseous Arsenic 

Emissions

* * * * *

16.0 Alternative Procedures

16.1 Alternative Analyzer. Inductively coupled plasma-atomic 

emission spectrometry (ICP-AES) may be used as an alternative to 

atomic absorption analysis provided the following conditions are met:
Page 147 of 181

16.1.1 Sample collection, sample preparation, and analytical 

preparation procedures are as defined in the method except as 

necessary for the ICP-AES application.

16.1.2 Quality Assurance/Quality Control procedures, including 

audit material analysis, are conducted as prescribed in the method. 

The QA acceptance conditions must be met.

16.1.3 The limit of quantitation for the ICP-AES must be 

demonstrated and the sample concentrations reported should be no less 

than two times the limit of quantitation. The limit of quantitation 

is defined as ten times the standard deviation of the blank value. 

The standard deviation of the blank value is determined from the 

analysis of seven blanks. It has been reported that for mercury and 

those elements that form hydrides, a continuous-flow generator 

coupled to an ICP-AES offers detection limits comparable to cold 

vapor atomic absorption.

* * * * *

12. In Method 108A of Appendix B by redesignating Sections 16 

and 17 as Sections 17 and 18 respectively, and by adding a new 

Section 16 as follows:

Method 108A – Determination of Arsenic Content in Ore Samples from 

Nonferrous Smelters

* * * * *

16.0 Alternative Procedures
Page 148 of 181

16.1 Alternative Analyzer. Inductively coupled plasma-atomic 

emission spectrometry (ICP-AES) may be used as an alternative to 

atomic absorption analysis provided the following conditions are met:

16.1.1 Sample collection, sample preparation, and analytical 

preparation procedures are as defined in the method except as 

necessary for the ICP-AES application.

16.1.2 Quality Assurance/Quality Control procedures, including 

audit material analysis, are conducted as prescribed in the method. 

The QA acceptance conditions must be met.

16.1.3 The limit of quantitation for the ICP-AES must be 

demonstrated and the sample concentrations reported should be no less 

than two times the limit of quantitation. The limit of quantitation 

is defined as ten times the standard deviation of the blank value. 

The standard deviation of the blank value is determined from the 

analysis of seven blanks. It has been reported that for mercury and 

those elements that form hydrides, a continuous-flow generator 

coupled to an ICP-AES offers detection limits comparable to cold 

vapor atomic absorption.

* * * * *

PART 63 – NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS 

FOR SOURCE CATEGORIES

1. The authority citation for part 63 continues to read as 

follows: Authority: 42 U.S.C. 7401 et seq.

§63.7 [Amended]

2. By revising Section 63.7(c)(iii)(A) as follows:
Page 149 of 181

§63.7 Performance testing requirements.

* * * * *

(c) * * *

(2) * * *

(iii) * * *

(A) The source owner, operator, or representative of the tested 

facility shall obtain an audit sample, if commercially available, 

from an AASP for each test method used for regulatory compliance 

purposes. No audit samples are required for the following test 

methods: Methods 3A and 3C of Appendix A-3 of Part 60; Methods 6C, 

7E, 9, and 10 of Appendix A-4 of Part 60; Methods 18 and 19 of 

Appendix A-6 of Part 60; Methods 20, 22, and 25A of Appendix A-7 of 

Part 60; and Methods 303, 318, 320, and 321 of Appendix A of Part 63.

If multiple sources at a single facility are tested during a 

compliance test event, only one audit sample is required for each 

method used during a compliance test. The compliance authority 

responsible for the compliance test may waive the requirement to 

include an audit sample if they believe that an audit sample is not 

necessary. “Commercially available” means that two or more 

independent AASPs have blind audit samples available for purchase. If 

the source owner, operator, or representative cannot find an audit 

sample for a specific method, the owner, operator, or representative 

shall consult the EPA web site at the following URL, 

www.epa.gov/ttn/emc, to confirm whether there is a source that can 
Page 150 of 181

supply an audit sample for that method. If the EPA web site does not 

list an available audit sample at least 60 days prior to the 

beginning of the compliance test, the source owner, operator, or 

representative shall not be required to include an audit sample as 

part of the quality assurance program for the compliance test. When 

ordering an audit sample, the source owner, operator, or 

representative shall give the sample provider an estimate for the 

concentration of each pollutant that is emitted by the source or the 

estimated concentration of each pollutant based on the permitted 

level and the name, address, and phone number of the compliance 

authority. The source owner, operator, or representative shall report 

the results for the audit sample along with a summary of the emission 

test results for the audited pollutant to the compliance authority 

and shall report the results of the audit sample to the AASP. The 

source owner, operator, or representative shall make both reports at 

the same time and in the same manner or shall report to the 

compliance authority first and report to the AASP. If the method 

being audited is a method that allows the samples to be analyzed in 

the field and the tester plans to analyze the samples in the field, 

the tester may analyze the audit samples prior to collecting the 

emission samples provided a representative of the compliance 

authority is present at the testing site. The tester may request, and 

the compliance authority may grant, a waiver to the requirement that 

a representative of the compliance authority must be present at the 

testing site during the field analysis of an audit sample. The source 
Page 151 of 181

owner, operator, or representative may report the results of the 

audit sample to the compliance authority and then report the results 

of the audit sample to the AASP prior to collecting any emission 

samples. The test protocol and final test report shall document 

whether an audit sample was ordered and utilized and the pass/fail 

results as applicable.

* * * * *

§63.8 [Amended]

3. By adding a sentence to the end of §63.8(f)(6)(iii) as 

follows: 

§63.8 Monitoring requirements.

* * * * *

(f) * * * 

(6) * * * 

(iii) * * * The Administrator will review the notification and 

may rescind permission to use an alternative and require the owner or 

operator to conduct a relative accuracy test of the CEMS as specified 

in section 8.4 of Performance Specification 2.

* * * * *

§63.144 [Amended]

4. By revising §63.144(b)(5)(i) by adding paragraphs (G) 

and (H) as follows: 
Page 152 of 181

§63.144 Process wastewater provisions—test methods and procedures 

for determining applicability and Group 1/Group 2 determinations 

(determining which wastewater streams require control).

* * * * *

(b)* * * 

(5)* * * 

(i)* * * 

(G) Method 8260B. Use procedures specified in Method 8260B in 

the SW-846 Compendium of Methods.

(H) Method 316. Use Method 316 to determine formaldehyde 

concentration.

* * * * *

§63.344 [Amended]

5. By adding §63.344(c)(5) as follows:

§63.344 Performance test requirements and test methods.

* * * * *

(c) * * *

(5) The South Coast Air Quality Management District (SCAQMD) 

Method 205.1 (which is available by contacting the South Coast AQMD, 

21865 Copley Dr, Diamond Bar, CA 91765) may be used to determine the 

total chromium concentration from hard and decorative chromium 

electroplating tanks and chromium anodizing tanks.

* * * * *

§63.364 [Amended]

6. By revising §63.364(e) as follows: 
Page 153 of 181

§63.364 Monitoring requirements.

* * * * *

(e) Measure and record once per hour the ethylene oxide 

concentration at the outlet to the atmosphere after any control 

device according to the procedures specified in §63.365(c)(1). The 

owner or operator shall compute and record a 24-hour average daily. 

The owner or operator will install, calibrate, operate, and maintain 

a monitor consistent with the requirements of performance 

specification (PS) 8 or 9 in 40 CFR Part 60, Appendix B, to measure 

ethylene oxide. The daily calibration requirements of section 7.2 of 

PS-9 or Section 13.1 of PS-8 are required only on days when ethylene 

oxide emissions are vented to the control device.

* * * * *

§63.365 [Amended]

7. By revising the introductory paragraph to §63.365(b) as 

follows: 

§63.365 Test methods and procedures.

* * * * *

(b) Efficiency at the sterilization chamber vent. California 

Air Resources Board (CARB) Method 431 or the following procedures 

shall be used to determine the efficiency of all types of control 

devices used to comply with §63.362(c), sterilization chamber vent 

standard.

* * * * *

§63.565 [Amended]
Page 154 of 181

8. By revising §63.565(d)(5), (8), and (10) and §63.565(g) as 

follows: 

§63.565 Test methods and procedures.

* * * * *

(d)* * * 

(5) Recovery devices. The average VOC concentration in the vent 

upstream and downstream of the control device shall be determined 

using Method 25A or 25B of Appendix A to part 60 of this chapter for 

recovery devices. The average VOC concentration shall correspond to 

the volume measurement by taking into account the sampling system 

response time.

* * * * *

(8) Where Method 25, 25A, or 25B is used to measure the percent 

reduction in VOC, the percent reduction across the combustion or 

recovery device shall be calculated as follows:

Where:

R = control efficiency of control device, percent.

Ei = mass flow rate of VOC at the inlet to the combustion or 

recovery device as calculated under paragraph (c)(7) of this section, 

kg/hr.
Page 155 of 181

Eo = mass flow rate of VOC at the outlet of the combustion or 

recovery device, as calculated under paragraph (c)(7) of this 

section, kg/hr.

* * * * *

(10) Use of methods other than Method 25, 25A, or 25B shall be 

validated pursuant to Method 301 of Appendix A to part 63 of this 

chapter.

* * * * *

(g) Baseline outlet VOC concentration. The procedures in this 

paragraph shall be used to determine the outlet VOC concentration 

required in §63.563(b)(4), (6), (7), and (8) for combustion devices 

except flare, carbon adsorbers, condenser/refrigeration units, and 

absorbers, respectively, and to monitor the VOC concentration as 

required in §63.564(e), (g), (h), and (i). The owner or operator 

shall use the procedures outlined in Method 25A or 25B. For the 

baseline VOC concentration, the arithmetic average of the outlet VOC 

concentration from three test runs from paragraph (d) of this section 

shall be calculated for the control device. The VOC concentration 

shall be measured at least every 15 minutes. Compliance testing of 

VOC CEMS shall be performed using PS 8.

* * * * *

§63.750 [Amended]

9. By revising §63.750(o) as follows: 

§63.750 Test methods and procedures.

* * * * *
Page 156 of 181

(o) Inorganic HAP emissions—dry particulate filter certification 

requirements. Dry particulate filters used to comply with 

§63.745(g)(2) or §63.746(b)(4) must be certified by the filter 

manufacturer or distributor, paint/depainting booth supplier, and/or 

the facility owner or operator using method 319 in Appendix A of this 

part, to meet or exceed the efficiency data points found in Tables 1 

and 2, or 3 and 4 of §63.745 for existing or new sources 

respectively.

* * * * *

§63.1251 [Amended]

10. By revising the definition of “process vent” in §63.1251

as follows:

§63.1251 Definitions.

* * * 

Process vent means a vent from a unit operation or vents from 

multiple unit operations within a process that are manifolded 

together into a common header, through which a HAP-containing gas 

stream is, or has the potential to be, released to the atmosphere. 

Examples of process vents include, but are not limited to, vents on 

condensers used for product recovery, bottom receivers, surge control 

vessels, reactors, filters, centrifuges, and process tanks. Emission 

streams that are undiluted and uncontrolled containing less than 50 

ppmv HAP, as determined through process knowledge that no HAP are 

present in the emission stream or using an engineering assessment as 

discussed in §63.1257(d)(2)(ii); test data using Method 18 of 40 CFR 
Page 157 of 181

part 60, Appendix A; Method 320 of 40 CFR part 63; or any other test 

method that has been validated according to the procedures in Method 

301 of Appendix A of this part, are not considered process vents. 

Process vents do not include vents on storage tanks regulated under 

§63.1253, vents on wastewater emission sources regulated under 

§63.1256, or pieces of equipment regulated under §63.1255.

* * * * *

§63.1511 [Amended]

11. By revising §63.1511(c)(9) as follows: 

§63.1511 Performance test/compliance demonstration general 

requirements.

* * * * *

(c)* * * 

(9) Method 26A for the concentration of HCl. Where a limeinjected fabric filter is used as the control device to comply with 

the 90 percent reduction standard, the owner or operator must measure 

the fabric filter inlet concentration of HCl at a point before lime 

is introduced to the system. Method 26 may be used in place of Method 

26A where it can be demonstrated that there are no water droplets in 

the emission stream. This can be demonstrated by showing that the 

vapor pressure of water in the emission stream that you are testing 

is less than the equilibrium vapor pressure of water at the emission 

stream temperature, and by certifying that the emission stream is not 

controlled by a wet scrubber.

* * * * *
Page 158 of 181

12. By revising Table 2 of Subpart CCCC as follows: 

Subpart CCCC—National Emission Standards for Hazardous Air 

Pollutants: Manufacturing of Nutritional Yeast

* * * * *
Page 159 of 181

Table 2 to Subpart CCCC of Part 63 — Requirements for Performance 

Tests

As stated in §63.2161, if you demonstrate compliance by monitoring 

brew ethanol, you must comply with the requirements for performance 

tests in the following table:

[Brew Ethanol Monitoring Only]

For each fed-batch 

fermenter

for which compliance 

is

determined by 

monitoring brew 

ethanol 

concentration

and calculating VOC

concentration in the

fermenter exhaust 

according to the 

procedures in 

§63.2161, you must...

 Using... According to the 

following 

requirements...

1. Measure VOC as 

propane

Method 25A*, or an 

alternative 

validated by EPA 

Method 301* and 

approved by the 

Administrator

You must measure the 

VOC concentration in 

the fermenter 

exhaust at any point 

prior to the 

dilution of the 

exhaust stream.

*EPA Test Methods found in Appendix A of 40 CFR part 60

* * * * *

13. By revising Table 4 in the appendix to Subpart UUUU as 

follows: 

Subpart UUUU—National Emission Standards for Hazardous Air Pollutants

for Cellulose Products Manufacturing

* * * * *

Table 4 to Subpart UUUU of Part 63 — Requirements for Performance 

Tests
Page 160 of 181

As required in §§63.5530(b) and 63.5535(a), (b), (g)(1), and 

(h)(1), you must conduct performance tests, other initial compliance 

demonstrations, and CEMS performance evaluations and establish 

operating limits according to the requirements in the following 

table:

For . . . at . . . you must . . . using . . .

according to the following 

requirements . . .

1. the sum of 

all process 

vents

a. each existing 

or new affected 

source

i. select 

sampling port's 

location and 

the number of 

traverse points;

EPA Method 1 or 1A in 

Appendix A to 40 CFR 

§63.7(d)(1)(i);

sampling sites must be located at 

the inlet and outlet to each 

control device;

 ii. determine 

velocity and 

volumetric 

flow rate;

EPA Method 2, 2A, 2C, 

2D, 2F, or 2G in 

Appendix A to part 60 

of this chapter;

you may use EPA Method 2A, 

2C, 2D, 2F, or 2G as an 

alternative to using EPA Method 

2, as appropriate;

 iii. conduct gas 

analysis; and,

(1) EPA Method 3, 3A, 

or 3B in Appendix A to 

part 60 of this chapter; 

or,

you may use EPA Method 3A or 

3B as an alternative to using 

EPA Method 3; or,

 (2) ASME PTC 19.10–

1981—Part 10; and,

you may use ASME PTC 19.10–

1981—Part 10 (available for 

purchase from Three Park 

Avenue, New York, NY 10016–

5990) as an alternative to using 

EPA Method 3B.

iv. measure 

moisture 

content of the 

stack gas.

EPA Method 4 in 

Appendix A to part 60 

of this chapter.

2. the sum of 

all viscose 

process vents

a. each existing 

or new viscose 

process source

i. measure total 

sulfide 

emissions

(1) EPA Method 15 in 

Appendix A to part 60 

of this chapter; or

(a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;

(b) you must conduct testing of 
Page 161 of 181

emissions from continuous 

viscose process vents and 

combinations of batch and 

continuous viscose process vents 

at normal operating conditions, 

as specified in §§63.7(e)(1) and 

63.5535;

(c) you must conduct testing of 

emissions from batch viscose 

process vents as specified in 

§63.490(c), except that the 

emission reductions required for 

process vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and

(d) you must collect CPMS data 

during the period of the initial 

compliance demonstration and 

determine the CPMS operating 

limit during the period of the 

initial compliance demonstration; 

or

 (2) carbon disulfide 

and/or hydrogen sulfide 

CEMS, as applicable;

(a) you must measure emissions 

at the inlet and outlet of each 

control device using CEMS;

(b) you must install, operate, and 

maintain the CEMS according to 

the applicable performance 

specification (PS–7, PS–8, PS–9, 

or PS–15) of 40 CFR part 60, 

appendix B; and

(c) you must collect CEMS 

emissions data at the inlet and 

outlet of each control device 

during the period of the initial 

compliance demonstration and 

determine the CEMS operating 

limit during the period of the 

initial compliance demonstration.
Page 162 of 181

3. the sum of 

all solvent 

coating 

process vents

a. each existing 

or new 

cellophane 

operation

i. measure 

toluene 

emissions

(1) EPA Method 18 in 

Appendix A to part 60 

of this chapter, or 

Method 320 in 

appendix A to part 63, 

or

(a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;

(b) you may use EPA Method 18 

or 320 to determine the control 

efficiency of any control device 

for organic compounds; for a 

combustion device, you must use 

only HAP that are present in the 

inlet to the control device to 

characterize the percent 

reduction across the combustion 

device;

 (c) you must conduct testing of 

emissions from continuous 

solvent coating process vents and 

combinations of batch and 

continuous solvent coating 

process vents at normal operating 

conditions, as specified in 

§§63.7(e)(1) and 63.5535;

 (d) you must conduct testing of 

emissions from batch solvent 

coating process vents as 

specified in §63.490(c), except 

that the emission reductions 

required for process vents under 

this subpart supersede the 

emission reductions required for 

process vents under subpart U of 

this part; and

 (e) you must collect CPMS data 

during the period of the initial 

compliance demonstration and 

determine the CPMS operating 

limit during the initial 

compliance demonstration; or

 (2) ASTM D6420–99 (a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;
Page 163 of 181

 (b) you may use ASTM D6420–

99 (available for purchase from 

at least one of the following 

addresses: 100 Barr Harbor 

Drive, West Conshohocken, PA 

19428–2959; or University

Microfilms International, 300 

North Zeeb Road, Ann Arbor, 

MI 48106) as an alternative to 

EPA Method 18 only where: the 

target compound(s) are those 

listed in Section 1.1 of ASTM 

D6420–99; and the target 

concentration is between 150 

parts per billion by volume 

(ppbv) and 100 ppmv; for target 

compound(s) not listed in

Section 1.1 of ASTM D6420–99, 

but potentially detected by mass 

spectrometry, the additional 

system continuing calibration 

check after each run, as detailed 

in Section 10.5.3 of the ASTM 

method, must be followed, met, 

documented, and submitted with 

the data report even if there is no 

moisture condenser used or the 

compound is not considered 

water soluble; and for target 

compound(s) not listed in 

Section 1.1 of ASTM D6420–99 

and not amenable to detection by

mass spectrometry, ASTM 

D6420–99 does not apply;

(c) you must conduct testing of 

emissions from continuous 

solvent coating process vents and 

combinations of batch and 

continuous solvent coating 

process vents at normal operating 

conditions, as specified in 
Page 164 of 181

§§63.7(e)(1) and 63.5535;

 (d) you must conduct testing of 

emissions from batch solvent 

coating process vents as 

specified in §63.490(c), except 

that the emission reductions 

required for process vents under 

this subpart supersede the 

emission reductions required for 

process vents under subpart U of 

this part; and,

 (e) you must collect CPMS data 

during the period of the initial 

compliance demonstration and 

determine the CPMS operating 

limit during the period of the 

initial compliance demonstration.

4. the sum of 

all cellulose 

ether process 

vents

a. each existing 

or new 

cellulose ether 

operation

i. measure total 

organic HAP 

emissions

(1) EPA Method 18 in 

Appendix A to part 60 

of this chapter or 

Method 320 in 

appendix A to part 63, 

or

(a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;

 (b) you may use EPA Method 18 

or 320 to determine the control 

efficiency of any control device 

for organic compounds; for a 

combustion device, you must use 

only HAP that are present in the 

inlet to the control device to 

characterize the percent 

reduction across the combustion 

device;

 (c) you must conduct testing of 

emissions from continuous 

cellulose ether process vents and 

combinations of batch and 

continuous cellulose ether 

process vents at normal operating 
Page 165 of 181

conditions, as specified in 

§§63.7(e)(1) and 63.5535;

 (d) you must conduct testing of 

emissions from batch cellulose 

ether process vents as specified 

in §63.490(c), except that the 

emission reductions required for 

process vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and

 (e) you must collect CPMS data 

during the period of the initial 

performance test and determine 

the CPMS operating limit during 

the period of the initial 

performance test;

 (2) ASTM D6420–99 (a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;

 (b) you may use ASTM D6420–

99 (available for purchase from 

at least one of the following 

addresses: 100 Barr Harbor 

Drive, West Conshohocken, PA 

19428–2959; or University

Microfilms International, 300 

North Zeeb Road, Ann Arbor, 

MI 48106) as an alternative to 

EPA Method 18 only where: the 

target compound(s) are those 

listed in Section 1.1 of ASTM 

D6420–99; and the target 

concentration is between 150 

ppbv and 100 ppmv; for target 

compound(s) not listed in 

Section 1.1 of ASTM D6420–99, 

but potentially detected by mass 

spectrometry, the additional 
Page 166 of 181

system continuing calibration 

check after each run, as detailed 

in Section 10.5.3 of the ASTM 

method, must be followed, met, 

documented, and submitted with 

the data report even if there is no 

moisture condenser used or the 

compound is not considered 

water soluble; and for target 

compound(s) not listed in 

Section 1.1 of ASTM D6420–99 

and not amenable to detection by

mass spectrometry, ASTM 

D6420–99 does not apply; target 

concentration is between 150 

ppbv and 100 ppmv for target 

compound(s).

 (c) you must conduct testing of 

emissions from continuous 

cellulose ether process vents and 

combinations of batch and 

continuous cellulose ether 

process vents at normal operating 

conditions, as specified in 

§§63.7(e)(1) and 63.5535;

 (d) you must conduct testing of 

emissions from batch cellulose 

ether process vents as specified 

in §63.490(c), except that the 

emission reductions required for 

process vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and

 (e) you must collect CPMS data 

during the period of the initial 

performance test and determine 

the CPMS operating limit during 

the period of the initial 
Page 167 of 181

performance test.

 (3) EPA Method 25 in 

Appendix A to part 60 

of this chapter; or

(a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;

 (b) you may use EPA Method 25 

to determine the control 

efficiency of combustion devices 

for organic compounds; you may

not use EPA Method 25 to 

determine the control efficiency

of noncombustion control 

devices;

 (c) you must conduct testing of 

emissions from continuous 

cellulose ether process vents and 

combinations of batch and 

continuous cellulose ether 

process vents at normal operating 

conditions, as specified in 

§§63.7(e)(1) and 63.5535;

(d) you must conduct testing of 

emissions from batch cellulose 

ether process vents as specified 

in §63.490(c), except that the 

emission reductions required for 

process vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and

 (e) you must collect CPMS data 

during the period of the initial 

performance test and determine 

the CPMS operating limit during 

the period of the initial 

performance test; or

 (4) EPA Method 25A in 

Appendix A to part 60 

of this chapter

(a) you must conduct testing of 

emissions at the inlet and outlet 

of each control device;
Page 168 of 181

 (b) you may use EPA Method 

25A if: an exhaust gas volatile 

organic matter concentration of 

50 ppmv or less is required in 

order to comply with the 

emission limit; the volatile 

organic matter concentration at 

the inlet to the control device and 

the required level of control are 

such as to result in exhaust 

volatile organic matter 

concentrations of 50 ppmv or 

less; or because of the high 

control efficiency of the control 

device, the anticipated volatile 

organic matter concentration at 

the control device exhaust is 50 

ppmv or less, regardless of the 

inlet concentration;

 (c) you must conduct testing of 

emissions from continuous 

cellulose ether process vents and 

combinations of batch and 

continuous cellulose ether 

process vents at normal operating 

conditions, as specified in 

§§63.7(e)(1) and 63.5535;

 (d) you must conduct testing of 

emissions from batch cellulose 

ether process vents as specified 

in §63.490(c), except that the 

emission reductions required for 

process vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and,

 (e) you must collect CPMS data 

during the period of the initial 

performance test and determine 
Page 169 of 181

the CPMS operating limit during 

the period of the initial 

performance test.

5. each 

toluene 

storage 

vessel

a. each existing 

or new 

cellophane 

operation

i. measure 

toluene 

emissions

(1) EPA Method 18 in 

Appendix A to part 60 

of this chapter or 

Method 320 in 

appendix A to part 63; 

or

(a) if venting to a control device 

to reduce emissions, you must 

conduct testing of emissions at 

the inlet and outlet of each 

control device;

 (b) you may use EPA Method 18 

or 320 to determine the control 

efficiency of any control device 

for organic compounds; for a 

combustion device, you must use 

only HAP that are present in the 

inlet to the control device to 

characterize the percent 

reduction across the combustion 

device;

 (c) you must conduct testing of 

emissions from continuous 

storage vessel vents and 

combinations of batch and 

continuous storage vessel vents 

at normal operating conditions, 

as specified in §§63.7(e)(1) and 

63.5535 for continuous process 

vents;

 (d) you must conduct testing of 

emissions from batch storage 

vessel vents as specified in 

§63.490(c) for batch process 

vents, except that the emission 

reductions required for process 

vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and,
Page 170 of 181

 (e) you must collect CPMS data 

during the period of the initial 

compliance demonstration and 

determine the CPMS operating 

limit during the period of the 

initial compliance demonstration; 

or

 (2) ASTM D6420–99 (a) if venting to a control device 

to reduce emissions, you must 

conduct testing of emissions at 

the inlet and outlet of each 

control device;

 (b) you may use ASTM D6420–

99 (available for purchase from 

at least one of the following 

addresses: 100 Barr Harbor 

Drive, West Conshohocken, PA 

19428–2959; or University

Microfilms International, 300 

North Zeeb Road, Ann Arbor, 

MI 48106) as an alternative to 

EPA Method 18 only where: the 

target compound(s) are those 

listed in Section 1.1 of ASTM 

D6420–99, and the target 

concentration is between 150 

ppbv and 100 ppmv; for target 

compound(s) not listed in 

Section 1.1 of ASTM D6420- 99, 

but potentially detected by mass 

spectrometry, the additional 

system continuing calibration 

check after each run, as detailed 

in Section 10.5.3 of the ASTM 

method, must be followed, met, 

documented, and submitted with 

the data report even if there is no 

moisture condenser used or the 

compound is not considered 

water soluble; and for target 

compound(s) not listed in 
Page 171 of 181

Section 1.1 of ASTM D6420–99 

and not amenable to detection by

mass spectrometry, ASTM 

D6420–99 does not apply;

 (c) you must conduct testing of 

emissions from continuous 

storage vessel vents and 

combinations of batch and 

continuous storage vessel vents 

at normal operating conditions, 

as specified in §§63.7(e)(1) and 

63.5535 for continuous process 

vents;

 (d) you must conduct testing of 

emissions from batch storage 

vessel vents as specified in 

§63.490(c) for batch process 

vents, except that the emission 

reductions required for process 

vents under this subpart 

supersede the emission 

reductions required for process 

vents under subpart U of this 

part; and,

 (e) you must collect CPMS data 

during the period of the initial 

compliance demonstration and 

determine the CPMS operating 

limit during the period of the 

initial compliance demonstration.

6. the sum of 

all process 

vents 

controlled 

using a flare

a. each existing 

or new affected 

source

i. measure 

visible 

emissions

(1) EPA Method 22 in 

Appendix A to part 60 

of this chapter

(a) you must conduct the flare 

visible emissions test according 

to §63.11(b).

7. equipment 

leaks

a. each existing 

or new 

cellulose ether 

operation

i. measure leak 

rate

(1) applicable 

equipment leak test 

methods in §63.180; or

(a) you must follow all 

requirements for the applicable 

equipment leak test methods in 

§63.180; or
Page 172 of 181

 (2) applicable 

equipment leak test 

methods in §63.1023

(a) you must follow all 

requirements for the applicable 

equipment leak test methods in 

§63.1023.

8. all sources

of 

wastewater 

emissions

a. each existing 

or new 

cellulose ether 

operation

i. measure 

wastewater 

HAP emissions

(1) applicable 

wastewater test 

methods and procedures 

in §§63.144 and 

63.145; or

(a) You must follow all 

requirements for the applicable 

wastewater test methods and 

procedures in §§63.144 and 

63.145; or

 (2) applicable 

wastewater test 

methods and procedures 

in §§63.144 and 63.145, 

using ASTM D5790–95 

as an alternative to EPA 

Method 624 in 

Appendix A to part 163 

of this chapter

(a) you must follow all 

requirements for the applicable 

waste water test methods and 

procedures in §§63.144 and 

63.145, except that you may use 

ASTM D5790–95 (available for 

purchase from at least one of the 

following addresses: 100 Barr 

Harbor Drive, West 

Conshohocken, PA 19428–2959; 

or University Microfilms 

International, 300 North Zeeb 

Road, Ann Arbor, MI 48106) as 

an alternative to EPA Method 

624, under the condition that this 

ASTM method be used with the 

sampling procedures of EPA 

Method 25D or an equivalent 

method.

9. any

emission 

point

a. each existing 

or new affected 

source using a 

CEMS to 

demonstrate 

compliance

i. conduct a 

CEMS 

performance 

evaluation

(1) applicable 

requirements in §63.8 

and applicable 

performance 

specification (PS–7, 

PS–8, PS–9, or PS–15) 

in Appendix B to part 

60 of this chapter

(a) you must conduct the CEMS 

performance evaluation during 

the period of the initial 

compliance demonstration 

according to the applicable 

requirements in §63.8 and the 

applicable performance 

specification (PS–7, PS–8, PS–9, 

or PS–15) of 40 CFR part 60, 

Appendix B;

(b) you must install, operate, and 

maintain the CEMS according to 
Page 173 of 181

the applicable performance 

specification (PS–7, PS–8, PS–9, 

or PS–15) of 40 CFR part 60, 

Appendix B; and

(c) you must collect CEMS 

emissions data at the inlet and 

outlet of each control device 

during the period of the initial 

compliance demonstration and 

determine the CEMS operating 

limit during the period of the 

initial compliance demonstration.

* * * * *

14. By revising Table 4 in the appendix to Subpart ZZZZ as 

follows: 

Subpart ZZZZ—National Emission Standards for Hazardous Air Pollutants 

for Stationary Reciprocating Internal Combustion Engines

* * * * *

Table 4 to Subpart ZZZZ of Part 63—Requirements for Performance Tests

[As stated in §§63.6610, 63.6611, 63.6620, and 63.6640, you must 

comply with the following requirements for performance tests for 

stationary RICE]

For each . . 

.

Complying with 

the requirement 

to . . .

You must . . . Using . . .

According to the 

following requirements . . 

.

1. 2SLB, 

4SLB, and 

CI

stationary

RICE

a. Reduce CO 

emissions

i. Measure the O2

at the inlet and 

outlet of the 

control device; 

and

(1) Portable CO and O2

analyzer

(a) Using ASTM D6522–

00 (2005)a (heated probe 

not necessary; single-point 

sampling) (incorporated by

reference, see §63.14). 

Measurements to determine 

O2 must be made at the 

same time as the 
Page 174 of 181

measurements for CO 

concentration.

 ii. Measure the 

CO at the inlet 

and the outlet of 

the control device.

(1) Portable CO and O2

analyzer

(a) Using ASTM D6522–

00 (2005)a (heated probe 

not necessary; single-point 

sampling) (incorporated by

reference, see §63.14) or 

Method 10 of 40 CFR part 

60, appendix A. The CO 

concentration must be at 15 

percent O2, dry basis.

2. 4SRB 

stationary

RICE

a. Reduce 

formaldehyde 

emissions

i. Sample at the 

centroid of the 

exhaust; 

(a) Sampling sites must be 

located at the inlet and 

outlet of the control device.

 ii. Measure O2 at 

the inlet and outlet 

of the control 

device; 

(1) Method 3 or 3A or 

3B of 40 CFR part 60, 

Appendix A, or ASTM 

Method D6522–00 

(2005) (heated probe not 

necessary; single-point 

sampling).

(a) Measurements to 

determine O2 concentration 

must be made at the same 

time as the measurements 

for formaldehyde 

concentration.

 iii. Measure 

moisture content 

at the inlet and 

outlet of the 

control device; 

and,

(1) Method 4 of 40 CFR 

part 60, Appendix A, or 

Test Method 320 of 40 

CFR part 63, Appendix 

A, or ASTM D 6348–03

(a) Measurements to 

determine moisture content 

must be made at the same 

time and location as the 

measurements for 

formaldehyde 

concentration.

 iv. Measure 

formaldehyde at 

the inlet and the 

outlet of the 

control device.

(1) Method 320 or 323 

of 40 CFR part 63, 

Appendix A; or ASTM 

D6348–03b, provided in 

ASTM D6348–03 

Annex A5 (Analyte 

Spiking Technique), the 

percent R must be 

greater than or equal to 

(a) Formaldehyde 

concentration must be at 15 

percent O2, dry basis. 

Results of this test consist 

of the average of the three 

1-hour or longer runs.
Page 175 of 181

70 and less than or equal 

to 130

3. 

Stationary

RICE

a. Limit the 

concentration of 

formaldehyde in 

the stationary

RICE exhaust

i. Sample at the 

centroid of the 

exhaust; 

(a) If using a control 

device, the sampling site 

must be located at the 

outlet of the control device.

 ii. Determine the 

O2 concentration 

of the stationary

RICE exhaust at 

the sampling port 

location; 

(1) Method 3 or 3A or 

3B of 40 CFR part 60, 

Appendix A, or ASTM 

Method D6522–00 

(2005) (heated probe not 

necessary; single-point 

sampling).

(a) Measurements to 

determine O2 concentration 

must be made at the same 

time and location as the 

measurements for 

formaldehyde 

concentration.

 iii. Measure 

moisture content 

of the stationary

RICE exhaust at 

the sampling port 

location; and,

(1) Method 4 of 40 CFR 

part 60, Appendix A, or 

Test Method 320 of 40 

CFR part 63, Appendix 

A, or ASTM D 6348–03

(a) Measurements to 

determine moisture content 

must be made at the same 

time and location as the 

measurements for 

formaldehyde 

concentration.

iv. Measure 

formaldehyde at 

the exhaust of the 

stationary RICE.

(1) Method 320 or 323 

of 40 CFR part 63, 

Appendix A; or ASTM 

D6348–03b, provided in 

ASTM D6348–03 

Annex A5 (Analyte 

Spiking Technique), the 

percent R must be 

greater than or equal to 

70 and less than or equal 

to 130

(a) Formaldehyde 

concentration must be at 15 

percent O2, dry basis. 

Results of this test consist 

of the average of the three 

1-hour or longer runs.

aYou may also use Methods 3A and 10 as options to ASTM–D6522–00 (2005). You may obtain a copy of ASTM–D6522–00 (2005) from at least one of the 

following addresses: American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428–2959, or University Microfilms 

International, 300 North Zeeb Road, Ann Arbor, MI 48106.

bYou may obtain a copy of ASTM–D6348–03 from at least one of the following addresses: American Society for Testing and Materials, 100 Barr Harbor 

Drive, West Conshohocken, PA 19428–2959, or University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106.

* * * * *
Page 176 of 181

15. In Method 306 of Appendix A by revising Sections 2.2.1, 

6.1.4, and 8.0 as follows:

Method 306—Determination of Chromium Emissions From Decorative and 

Hard Chromium Electroplating and Chromium Anodizing Operations—

Isokinetic Method

* * * * *

2.2.1 Total chromium samples with high chromium concentrations 

(≥35 μg/L) may be analyzed using inductively coupled plasma emission 

spectrometry (ICP) at 267.72 nm. Note: The ICP analysis is applicable 

for this method only when the solution analyzed has a Cr 

concentration greater than or equal to 35 μg/L or five times the 

method detection limit as determined according to Appendix B in 40 

CFR part 136. Similarly, inductively coupled plasma-mass 

spectroscopy (ICP-MS) may be used for total chromium analysis 

provided the procedures for ICP-MS analysis described in Method 6020 

or 6020A (EPA Office of Solid Waste, publication SW-846) are 

followed.

* * * * *

6.1.4 Operating and maintenance procedures for the sampling 

train are described in APTD–0576 of Method 5. Users should read the 

APTD–0576 document and adopt the outlined procedures. Alternative 

mercury-free thermometers may be used if the thermometers are, at a 

minimum, equivalent in terms of performance or suitably effective for 

the specific temperature measurement application.

* * * * *
Page 177 of 181

8.0 Sample Collection, Preservation, Holding Times, Storage, 

and Transport

Note: Prior to sample collection, consideration should be given to 

the type of analysis (Cr+6 or total Cr) that will be performed. Which 

analysis option(s) will be performed will determine which sample 

recovery and storage procedures will be required to process the 

sample.

* * * * *

16. In Method 306A of Appendix A by revising Section 8.2 as 

follows:

Method 306A — Determination of Chromium Emissions From Decorative and 

Hard Chromium Electroplating and Chromium Anodizing Operations

* * * * *

8.2 Sample Recovery. After the train has been transferred to 

the sample recovery area, disconnect the tubing that connects the 

jar/impingers. The tester shall select either the total Cr or Cr+6

sample recovery option. Samples to be analyzed for both total Cr and 

Cr+6 shall be recovered using the Cr+6 sample option (Section 8.2.2).

Note: Collect a reagent blank sample for each of the total Cr or the 

Cr+6 analytical options. If both analyses (Cr and Cr+6) are to be 

conducted on the samples, collect separate reagent blanks for each 

analysis. Also, since particulate matter is not usually present at 

chromium electroplating and/or chromium anodizing operations, it is 

not necessary to filter the Cr+6 samples unless there is observed 

sediment in the collected solutions. If it is necessary to filter the 
Page 178 of 181

Cr+6 solutions, please refer to Method 0061, Determination of 

Hexavalent Chromium Emissions from Stationary Sources, Section 7.4, 

Sample Preparation in SW-846 (see Reference 1).

* * * * *

17. In Method 308 of Appendix A by revising Section 10.1.3 as 

follows: 

Method 308 — Procedure for Determination of Methanol Emission From 

Stationary Sources

* * * * *

10.1.3 Temperature Sensors. Calibrate against mercury-in-glass 

thermometers. An alternative mercury-free thermometer may be used if 

the thermometer is, at a minimum, equivalent in terms of performance 

or suitably effective for the specific temperature measurement 

application.

* * * * *

7. In Method 315 of Appendix A by revising Sections 6.1.1 and 

10.5 and by redesignating Section 8.11 as 8.1 and revising as 

follows: 

Method 315 — Determination of Particulate and Methylene Chloride 

Extractable Matter (MCEM) From Selected Sources at Primary Aluminum 

Production Facilities

* * * * *

6.1.1 Sampling train. A schematic of the sampling train used in 

this method is shown in Figure 5–1, Method 5, 40 CFR part 60, 

Appendix A. Complete construction details are given in APTD–0581 
Page 179 of 181

(Reference 2 in section 17.0 of this method); commercial models of 

this train are also available. For changes from APTD–0581 and for 

allowable modifications of the train shown in Figure 5–1, Method 5, 

40 CFR part 60, Appendix A, see the following subsections. Note: The 

operating and maintenance procedures for the sampling train are 

described in APTD–0576 (Reference 3 in section 17.0 of this method). 

Since correct usage is important in obtaining valid results, all 

users should read APTD–0576 and adopt the operating and maintenance 

procedures outlined in it, unless otherwise specified herein. 

Alternative mercury-free thermometers may be used if the thermometers 

are, at a minimum, equivalent in terms of performance or suitably 

effective for the specific temperature measurement application. The 

use of grease for sealing sampling train components is not 

recommended because many greases are soluble in methylene chloride. 

The sampling train consists of the following components:

* * * * *

8.1 Pretest preparation. It is suggested that sampling 

equipment be maintained according to the procedures described in 

APTD–0576. Alternative mercury-free thermometers may be used if the 

thermometers are at a minimum equivalent in terms of performance or 

suitably effective for the specific temperature measurement 

application.

* * * * *

10.5 Temperature sensors. Use the procedure in Section 10.3 of 

Method 2, 40 CFR part 60, Appendix A to calibrate in-stack 
Page 180 of 181

temperature sensors. Dial thermometers, such as are used for the DGM 

and condenser outlet, shall be calibrated against mercury-in-glass 

thermometers. An alternative mercury-free thermometer may be used if 

the thermometer is, at a minimum, equivalent in terms of performance 

or suitably effective for the specific temperature measurement 

application.

* * * * *

8. In Method 316 of Appendix A by revising Section 10.5 as 

follows: 

Method 316 — Sampling and Analysis for Formaldehyde Emissions From 

Stationary Sources in the Mineral Wool and Wool Fiberglass Industries

* * * * *

10.5 Temperature gauges: Use the procedure in Section 4.3 of 

EPA Method 2 to calibrate in-stack temperature gauges. Dial 

thermometers, such as are used for the dry gas meter and condenser 

outlet, shall be calibrated against mercury-in-glass thermometers. 

An alternative mercury-free thermometer may be used if the 

thermometer is, at a minimum, equivalent in terms of performance or 

suitably effective for the specific temperature measurement 

application.

* * * * *

9. In Method 321 of Appendix A by revising the definition for the 

term “Df” after equation (2) in Section 9.3.1 as follows: 
Page 181 of 181

Test Method 321—Measurement of Gaseous Hydrogen Chloride Emissions at 

Portland Cement Kilns by Fourier Transform Infrared (FTIR) 

Spectroscopy

* * * * *

9.3 * * *

DF = Dilution Factor (Total flow/Spike flow). Total flow = spike 

flow plus effluent flow.

* * * * *