80 FR 42726 - Approval and Promulgation of Air Quality Implementation Plans; Illinois; Midwest Generation Variances

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 80, Issue 138 (July 20, 2015)

Page Range		42726-42727
FR Document		2015-17662

The Environmental Protection Agency (EPA) is approving into the Illinois regional haze State Implementation Plan (SIP) variances affecting the following Midwest Generation, LLC facilities: Crawford Generating Station (Cook County), Joliet Generating Station (Will County), Powerton Generating Station (Tazewell County), Waukegan Generating Station (Lake County), and Will County Generating Station (Will County). The Illinois Environmental Protection Agency (IEPA) submitted these variances to EPA for approval on May 16, 2013, and August 18, 2014.

Federal Register, Volume 80 Issue 138 (Monday, July 20, 2015)

[Federal Register Volume 80, Number 138 (Monday, July 20, 2015)]
[Rules and Regulations]
[Pages 42726-42727]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-17662]


=======================================================================
-----------------------------------------------------------------------

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R05-OAR-2013-0436; EPA-R05-OAR-2014-0663; FRL-9929-71-Region 5]


Approval and Promulgation of Air Quality Implementation Plans; 
Illinois; Midwest Generation Variances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The Environmental Protection Agency (EPA) is approving into 
the Illinois regional haze State Implementation Plan (SIP) variances 
affecting the following Midwest Generation, LLC facilities: Crawford 
Generating Station (Cook County), Joliet Generating Station (Will 
County), Powerton Generating Station (Tazewell County), Waukegan 
Generating Station (Lake County), and Will County Generating Station 
(Will County). The Illinois Environmental Protection Agency (IEPA) 
submitted these variances to EPA for approval on May 16, 2013, and 
August 18, 2014.

DATES: This final rule is effective on August 19, 2015.

ADDRESSES: EPA has established dockets for this action under Docket ID 
Nos. EPA-R05-OAR-2013-0436 and EPA-R05-OAR-2014-0663. All documents in 
the docket are listed on the www.regulations.gov Web site. Although 
listed in the index, some information is not publicly available, i.e., 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Certain other material, such as 
copyrighted material, is not placed on the Internet and will be 
publicly available only in hard copy form. Publicly available docket 
materials are available either electronically through 
www.regulations.gov or in hard copy at the Environmental Protection 
Agency, Region 5, Air and Radiation Division, 77 West Jackson 
Boulevard, Chicago, Illinois 60604. This facility is open from 8:30 
a.m. to 4:30 p.m., Monday through Friday, excluding Federal holidays. 
We recommend that you telephone Kathleen D'Agostino, Environmental 
Engineer, at (312) 886-1767 before visiting the Region 5 office.

FOR FURTHER INFORMATION CONTACT: Kathleen D'Agostino, Environmental 
Engineer, Attainment Planning and Maintenance Section, Air Programs 
Branch (AR-18J), Environmental Protection Agency, Region 5, 77 West 
Jackson Boulevard, Chicago, Illinois 60604, (312) 886-1767, 
dagostino.kathleen@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document whenever ``we,'' 
``us,'' or ``our'' is used, we mean EPA. This supplementary information 
section is arranged as follows:

I. What is the background for this action?
II. What action is EPA taking?
III. Incorporation by reference
IV. Statutory and Executive Order Reviews.

I. What is the background for this action?

    On June 24, 2011, Illinois submitted a plan to address the 
requirements of the Regional Haze Rule, as codified at 40 CFR 51.308. 
EPA approved Illinois' regional haze SIP on July 6, 2012 (77 FR 39943). 
Among the rules approved in this action to meet the best available 
retrofit technology (BART) requirements of the Regional Haze Rule are 
Illinois Administrative Code rules: 35 Ill. Adm. Code 225.292: 
``Applicability of the Combined Pollutant Standard;'' 35 Ill. Adm. Code 
225.295 ``Combined Pollutant Standard: Emissions Standards for 
NOX and SO2;'' 35 Ill. Adm. Code 225.296 
``Combined Pollutant Standard: Control Technology Requirements for 
NOX, SO2, and PM Emissions'' (except for 
paragraph 225.296(d)); and 35 Ill. Adm. Code 225 Appendix A, which 
identifies the Midwest Generation Electric Generating Units (EGUs) 
specified for purposes of the combined pollutant standard (CPS).
    The Illinois Pollution Control Board (IPCB) granted Midwest 
Generation variances to Section 225.296(a)(1) and 225.296(c)(1) on 
August 23, 2012, and to Section 225.295(b) and Section 225.296(a)(2) on 
April 4, 2013. IEPA submitted these variances as revisions to the 
Illinois regional haze SIP on May 16, 2013, and August 18, 2014. EPA 
proposed to approve these variances on April 23, 2015 (80 FR 22662). 
EPA received no comments on the proposed action.

II. What action is EPA taking?

    EPA is finalizing approval of the Midwest Generation variances 
submitted by IEPA on May 16, 2013, and August 18, 2014, as revisions to 
the Illinois regional haze SIP.

III. Incorporation by Reference

    In this rule, EPA is finalizing regulatory text that includes 
incorporation by reference. In accordance with requirements of 1 CFR 
51.5, EPA is finalizing the incorporation by reference of the Illinois 
Regulations described in the amendments to 40 CFR part 52 set forth 
below. EPA has made, and will continue to make, these

[[Page 42727]]

documents generally available electronically through 
www.regulations.gov and/or in hard copy at the appropriate EPA office 
(see the ADDRESSES section of this preamble for more information).

IV. Statutory and Executive Order Reviews

    Under the Clean Air Act (CAA), the Administrator is required to 
approve a SIP submission that complies with the provisions of the CAA 
and applicable Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). 
Thus, in reviewing SIP submissions, EPA's role is to approve state 
choices, provided that they meet the criteria of the CAA. Accordingly, 
this action merely approves state law as meeting Federal requirements 
and does not impose additional requirements beyond those imposed by 
state law. For that reason, this action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 
2011);
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the CAA; and
     Does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, the SIP is not approved to apply on any Indian 
reservation land or in any other area where EPA or an Indian tribe has 
demonstrated that a tribe has jurisdiction. In those areas of Indian 
country, the rule does not have tribal implications and will not impose 
substantial direct costs on tribal governments or preempt tribal law as 
specified by Executive Order 13175 (65 FR 67249, November 9, 2000).
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a copy of the rule, 
to each House of the Congress and to the Comptroller General of the 
United States. EPA will submit a report containing this action and 
other required information to the U.S. Senate, the U.S. House of 
Representatives, and the Comptroller General of the United States prior 
to publication of the rule in the Federal Register. A major rule cannot 
take effect until 60 days after it is published in the Federal 
Register. This action is not a ``major rule'' as defined by 5 U.S.C. 
804(2).
    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by September 18, 2015. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this action for the purposes of judicial review nor 
does it extend the time within which a petition for judicial review may 
be filed, and shall not postpone the effectiveness of such rule or 
action. This action may not be challenged later in proceedings to 
enforce its requirements. (See section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Particulate matter, Reporting 
and recordkeeping requirements, Sulfur oxides.

    Dated: June 19, 2015.
Susan Hedman,
Regional Administrator, Region 5.

    40 CFR part 52 is amended as follows:

PART 52--APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

0
1. The authority citation for part 52 continues to read as follows:

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


0
2. Section 52.720 is amended by adding paragraph (c)(205) to read as 
follows:


Sec.  52.720  Identification of plan.

* * * * *
    (c) * * *
    (205) On May 16, 2013, and August 18, 2014, Illinois submitted 
variances to its regional haze state implementation plan affecting the 
following Midwest Generation, LLC facilities: Crawford Generating 
Station (Cook County), Joliet Generating Station (Will County), 
Powerton Generating Station (Tazewell County), Waukegan Generating 
Station (Lake County), and Will County Generating Station (Will 
County).
    (i) Incorporation by Reference. (A) Illinois Pollution Control 
Board Order PCB 12-121, adopted on August 23, 2012; Certificate of 
Acceptance, dated August 24, 2012, filed with the Illinois Pollution 
Control Board Clerk's Office August 27, 2012.
    (B) Illinois Pollution Control Board Order PCB 13-24, adopted on 
April 4, 2013; Certificate of Acceptance, dated May 16, 2013, filed 
with the Illinois Pollution Control Board Clerk's Office May 17, 2013.

[FR Doc. 2015-17662 Filed 7-17-15; 8:45 am]
BILLING CODE 6560-50-P

42726 Federal Register / Vol. 80, No. 138 / Monday, July 20, 2015 / Rules and Regulations

Agreement with Royal Mail Group, Ltd. ENVIRONMENTAL PROTECTION 60604, (312) 886–1767,
Priority Mail International Regional Rate AGENCY dagostino.kathleen@epa.gov.
Boxes Contract 1 SUPPLEMENTARY INFORMATION:
Inbound International* 40 CFR Part 52 Throughout this document whenever
International Business Reply Service ‘‘we,’’ ‘‘us,’’ or ‘‘our’’ is used, we mean
[EPA–R05–OAR–2013–0436; EPA–R05–
(IBRS) Competitive Contracts EPA. This supplementary information
OAR–2014–0663; FRL–9929–71–Region 5]
International Business Reply Service section is arranged as follows:
Competitive Contract 1 Approval and Promulgation of Air
International Business Reply Service I. What is the background for this action?
Quality Implementation Plans; Illinois; II. What action is EPA taking?
Competitive Contract 3 Midwest Generation Variances III. Incorporation by reference
Inbound Direct Entry Contracts with IV. Statutory and Executive Order Reviews.
Customers AGENCY: Environmental Protection
Inbound Direct Entry Contracts with Agency (EPA). I. What is the background for this
Foreign Postal Administrations ACTION: Final rule.
action?
Inbound Direct Entry Contracts with On June 24, 2011, Illinois submitted
Foreign Postal Administrations SUMMARY: The Environmental Protection a plan to address the requirements of
Inbound Direct Entry Contracts with Agency (EPA) is approving into the the Regional Haze Rule, as codified at
Foreign Postal Administrations 1 Illinois regional haze State 40 CFR 51.308. EPA approved Illinois’
Inbound EMS Implementation Plan (SIP) variances regional haze SIP on July 6, 2012 (77 FR
Inbound EMS 2 affecting the following Midwest 39943). Among the rules approved in
Inbound Air Parcel Post (at non-UPU rates) Generation, LLC facilities: Crawford this action to meet the best available
Royal Mail Group Inbound Air Parcel Post Generating Station (Cook County), Joliet retrofit technology (BART) requirements
Agreement Generating Station (Will County), of the Regional Haze Rule are Illinois
Inbound Competitive Multi-Service Powerton Generating Station (Tazewell Administrative Code rules: 35 Ill. Adm.
Agreements with Foreign Postal County), Waukegan Generating Station Code 225.292: ‘‘Applicability of the
Operators 1 (Lake County), and Will County Combined Pollutant Standard;’’ 35 Ill.
Special Services * Generating Station (Will County). The Adm. Code 225.295 ‘‘Combined
Address Enhancement Services Illinois Environmental Protection Pollutant Standard: Emissions
Greeting Cards, Gift Cards, and Stationery Agency (IEPA) submitted these Standards for NOX and SO2;’’ 35 Ill.
International Ancillary Services variances to EPA for approval on May Adm. Code 225.296 ‘‘Combined
International Money Transfer Service— 16, 2013, and August 18, 2014. Pollutant Standard: Control Technology
Outbound Requirements for NOX, SO2, and PM
DATES: This final rule is effective on
International Money Transfer Service—
August 19, 2015. Emissions’’ (except for paragraph
Inbound
ADDRESSES: EPA has established dockets 225.296(d)); and 35 Ill. Adm. Code 225
Premium Forwarding Service
for this action under Docket ID Nos. Appendix A, which identifies the
Shipping and Mailing Supplies
EPA–R05–OAR–2013–0436 and EPA– Midwest Generation Electric Generating
Post Office Box Service
R05–OAR–2014–0663. All documents in Units (EGUs) specified for purposes of
Competitive Ancillary Services
the docket are listed on the the combined pollutant standard (CPS).
Nonpostal Services *
www.regulations.gov Web site. Although The Illinois Pollution Control Board
Advertising
listed in the index, some information is (IPCB) granted Midwest Generation
Licensing of Intellectual Property other
not publicly available, i.e., Confidential variances to Section 225.296(a)(1) and
than Officially Licensed Retail Products
Business Information (CBI) or other 225.296(c)(1) on August 23, 2012, and to
(OLRP)
Mail Service Promotion information whose disclosure is Section 225.295(b) and Section
Officially Licensed Retail Products (OLRP) restricted by statute. Certain other 225.296(a)(2) on April 4, 2013. IEPA
Passport Photo Service material, such as copyrighted material, submitted these variances as revisions
Photocopying Service is not placed on the Internet and will be to the Illinois regional haze SIP on May
Rental, Leasing, Licensing or other Non- publicly available only in hard copy 16, 2013, and August 18, 2014. EPA
Sale Disposition of Tangible Property form. Publicly available docket proposed to approve these variances on
Training Facilities and Related Services materials are available either April 23, 2015 (80 FR 22662). EPA
USPS Electronic Postmark (EPM) Program electronically through received no comments on the proposed
Market Tests * www.regulations.gov or in hard copy at action.
Metro Post the Environmental Protection Agency, II. What action is EPA taking?
International Merchandise Return Service Region 5, Air and Radiation Division, 77
(IMRS)—Non-Published Rates
EPA is finalizing approval of the
West Jackson Boulevard, Chicago, Midwest Generation variances
Customized Delivery Illinois 60604. This facility is open from submitted by IEPA on May 16, 2013,
Ruth Ann Abrams, 8:30 a.m. to 4:30 p.m., Monday through and August 18, 2014, as revisions to the
Friday, excluding Federal holidays. We Illinois regional haze SIP.
Acting Secretary.
recommend that you telephone
[FR Doc. 2015–17685 Filed 7–17–15; 8:45 am] Kathleen D’Agostino, Environmental III. Incorporation by Reference
BILLING CODE 7710–FW–P Engineer, at (312) 886–1767 before In this rule, EPA is finalizing
visiting the Region 5 office. regulatory text that includes
mstockstill on DSK4VPTVN1PROD with RULES

FOR FURTHER INFORMATION CONTACT: incorporation by reference. In
Kathleen D’Agostino, Environmental accordance with requirements of 1 CFR
Engineer, Attainment Planning and 51.5, EPA is finalizing the incorporation
Maintenance Section, Air Programs by reference of the Illinois Regulations
Branch (AR–18J), Environmental described in the amendments to 40 CFR
Protection Agency, Region 5, 77 West part 52 set forth below. EPA has made,
Jackson Boulevard, Chicago, Illinois and will continue to make, these

VerDate Sep<11>2014 16:02 Jul 17, 2015 Jkt 235001 PO 00000 Frm 00020 Fmt 4700 Sfmt 4700 E:\FR\FM\20JYR1.SGM 20JYR1

Federal Register / Vol. 80, No. 138 / Monday, July 20, 2015 / Rules and Regulations 42727

documents generally available or in any other area where EPA or an § 52.720 Identification of plan.
electronically through Indian tribe has demonstrated that a * * * * *
www.regulations.gov and/or in hard tribe has jurisdiction. In those areas of (c) * * *
copy at the appropriate EPA office (see Indian country, the rule does not have (205) On May 16, 2013, and August
the ADDRESSES section of this preamble tribal implications and will not impose 18, 2014, Illinois submitted variances to
for more information). substantial direct costs on tribal its regional haze state implementation
governments or preempt tribal law as plan affecting the following Midwest
IV. Statutory and Executive Order specified by Executive Order 13175 (65 Generation, LLC facilities: Crawford
Reviews FR 67249, November 9, 2000). Generating Station (Cook County), Joliet
Under the Clean Air Act (CAA), the The Congressional Review Act, 5 Generating Station (Will County),
Administrator is required to approve a U.S.C. 801 et seq., as added by the Small Powerton Generating Station (Tazewell
SIP submission that complies with the Business Regulatory Enforcement County), Waukegan Generating Station
provisions of the CAA and applicable Fairness Act of 1996, generally provides (Lake County), and Will County
Federal regulations. 42 U.S.C. 7410(k); that before a rule may take effect, the Generating Station (Will County).
40 CFR 52.02(a). Thus, in reviewing SIP agency promulgating the rule must (i) Incorporation by Reference. (A)
submissions, EPA’s role is to approve submit a rule report, which includes a Illinois Pollution Control Board Order
state choices, provided that they meet copy of the rule, to each House of the PCB 12–121, adopted on August 23,
the criteria of the CAA. Accordingly, Congress and to the Comptroller General 2012; Certificate of Acceptance, dated
this action merely approves state law as of the United States. EPA will submit a August 24, 2012, filed with the Illinois
meeting Federal requirements and does report containing this action and other Pollution Control Board Clerk’s Office
not impose additional requirements required information to the U.S. Senate, August 27, 2012.
beyond those imposed by state law. For the U.S. House of Representatives, and (B) Illinois Pollution Control Board
that reason, this action: the Comptroller General of the United Order PCB 13–24, adopted on April 4,
• Is not a ‘‘significant regulatory States prior to publication of the rule in 2013; Certificate of Acceptance, dated
action’’ subject to review by the Office the Federal Register. A major rule May 16, 2013, filed with the Illinois
of Management and Budget under cannot take effect until 60 days after it Pollution Control Board Clerk’s Office
Executive Orders 12866 (58 FR 51735, is published in the Federal Register. May 17, 2013.
October 4, 1993) and 13563 (76 FR 3821, This action is not a ‘‘major rule’’ as [FR Doc. 2015–17662 Filed 7–17–15; 8:45 am]
January 21, 2011); defined by 5 U.S.C. 804(2). BILLING CODE 6560–50–P
• Does not impose an information Under section 307(b)(1) of the CAA,
collection burden under the provisions petitions for judicial review of this
of the Paperwork Reduction Act (44 action must be filed in the United States ENVIRONMENTAL PROTECTION
U.S.C. 3501 et seq.); Court of Appeals for the appropriate AGENCY
• Is certified as not having a circuit by September 18, 2015. Filing a
significant economic impact on a petition for reconsideration by the 40 CFR Part 52
substantial number of small entities Administrator of this final rule does not
[EPA–R06–OAR–2013–0542; FRL–9930–44–
under the Regulatory Flexibility Act (5 affect the finality of this action for the Region–6]
U.S.C. 601 et seq.); purposes of judicial review nor does it
• Does not contain any unfunded extend the time within which a petition Approval and Promulgation of
mandate or significantly or uniquely for judicial review may be filed, and Implementation Plans; Texas;
affect small governments, as described shall not postpone the effectiveness of Revisions to the New Source Review
in the Unfunded Mandates Reform Act such rule or action. This action may not State Implementation Plan; Flexible
of 1995 (Pub. L. 104–4); be challenged later in proceedings to Permit Program
• Does not have Federalism enforce its requirements. (See section
implications as specified in Executive 307(b)(2).) AGENCY: Environmental Protection
Order 13132 (64 FR 43255, August 10, Agency (EPA).
List of Subjects in 40 CFR Part 52 ACTION: Final rule.
1999);
• Is not an economically significant Environmental protection, Air
pollution control, Incorporation by SUMMARY: The EPA is fully approving
regulatory action based on health or
reference, Intergovernmental relations, revisions to the Texas New Source
safety risks subject to Executive Order
Particulate matter, Reporting and Review (NSR) State Implementation
13045 (62 FR 19885, April 23, 1997);
• Is not a significant regulatory action recordkeeping requirements, Sulfur Plan (SIP) to establish the Texas Minor
subject to Executive Order 13211 (66 FR oxides. NSR Flexible Permits Program (FPP),
28355, May 22, 2001); submitted by the Texas Commission on
Dated: June 19, 2015.
• Is not subject to requirements of Environmental Quality (TCEQ). The
Susan Hedman,
Section 12(d) of the National approval was predicated on the TCEQ
Regional Administrator, Region 5. meeting its commitment outlined in its
Technology Transfer and Advancement
Act of 1995 (15 U.S.C. 272 note) because 40 CFR part 52 is amended as follows: letter dated December 9, 2013, to adopt
application of those requirements would certain minor clarifications to the
PART 52—APPROVAL AND Flexible Permit Program (FPP) by
be inconsistent with the CAA; and PROMULGATION OF
• Does not provide EPA with the November 30, 2014. The TCEQ
IMPLEMENTATION PLANS submitted the revised program rules to
discretionary authority to address, as
mstockstill on DSK4VPTVN1PROD with RULES

appropriate, disproportionate human meet its commitment on July 31, 2014.
■ 1. The authority citation for part 52
health or environmental effects, using continues to read as follows: The EPA is finalizing this action under
practicable and legally permissible section 110 of the Clean Air Act (CAA).
Authority: 42 U.S.C. 7401 et seq. DATES: This final rule will be effective
methods, under Executive Order 12898
(59 FR 7629, February 16, 1994). ■ 2. Section 52.720 is amended by August 19, 2015.
In addition, the SIP is not approved adding paragraph (c)(205) to read as ADDRESSES: The EPA has established a
to apply on any Indian reservation land follows: docket for this action under Docket ID

VerDate Sep<11>2014 16:02 Jul 17, 2015 Jkt 235001 PO 00000 Frm 00021 Fmt 4700 Sfmt 4700 E:\FR\FM\20JYR1.SGM 20JYR1

Document Created: 2015-12-15 12:57:47
Document Modified: 2015-12-15 12:57:47

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Rules and Regulations
Action		Final rule.
Dates		This final rule is effective on August 19, 2015.
Contact		Kathleen D'Agostino, Environmental Engineer, Attainment Planning and Maintenance Section, Air Programs Branch (AR-18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 886-1767, [email protected]
FR Citation		80 FR 42726
CFR Associated		Environmental Protection; Air Pollution Control; Incorporation by Reference; Intergovernmental Relations; Particulate Matter; Reporting and Recordkeeping Requirements and Sulfur Oxides