### 27908 Federal Register / Vol. 76, No. 93 / Friday, May 13, 2011 / Rules and Regulations

EPA-A PPROVED 

### I NDIANA 

### R EGULATIONS 

### —Continued

Indiana citation Subject Indiana effective date EPA approval date Notes

1–6–2 ............... Records; notice of malfunction ............................................... 3/15/1984 5/3/1990, 55 FR 1860 4. 1–6–3 ............... Preventive maintenance plans ............................................... 3/15/1984 5/3/1990, 55 FR 18604. 1–6–4 ............... Conditions under which malfunction not considered violation 3/15/1984 5/3/1990, 55 FR 18604. 1–6–5 ............... Excessive malfunctions; department actions ......................... 3/15/1984 5/3/1990, 55 FR 18604. 1–6–6 ............... Malfunction emission reduction program ............................... 3/15/1984 5/3/1990, 55 FR 18604.

Rule 7. Stack Height Provisions

1–7–1 ............... Applicability ............................................................................. 8/27/1980 3/12/19 82, 47 FR 10824. 1–7–3 ............... Actual stack height provisions ................................................ 8/27/1980 3/12/1982, 47 FR 10 824. 1–7–5 ............... Exemptions; limitations ........................................................... 8/27/1980 3/12/1982, 47 FR 10824.

*******

* * * * * [FR Doc. 2011–11726 Filed 5–12–11; 8:45 am]

**BILLING CODE 6560–50–P**

**ENVIRONMENTAL PROTECTION AGENCY** 

**40 CFR Part 52**

**[EPA–R01–OAR–2010–0445; A–1–FRL– 9305–1]** 

**Approval and Promulgation of Air Quality Implementation Plans;**  **Massachusetts; Revised Carbon Monoxide Maintenance Plan for Lowell** 

**AGENCY :**  Environmental Protection Agency (EPA).

**ACTION :**  Final rule.

**SUMMARY :**  EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Massachusetts. This SIP submittal contains revisions to the carbon monoxide (CO) maintenance plan for Lowell, Massachusetts. Specifically, Massachusetts has revised the contingency plan portion of the original maintenance plan. The intended effect of this action is to approve this revision to the Lowell CO maintenance plan. This action is being taken in accordance with the Clean Air Act.

**DATES :**  Effective Date: This rule is effective on June 13, 2011.

**ADDRESSES :**  EPA has established a docket for this action under Docket Identification No. EPA–R01–OAR– 2010–0445. All documents in the docket are listed on the http:// www.regulations.gov web site. Although listed in the index, some information is not publicly available, i.e., 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 http:// www.regulations.gov or in hard copy at the Office of Ecosystem Protection, U.S. Environmental Protection Agency, EPA New England Regional Office, Office of Ecosystem Protection, Air Quality Planning Unit, 5 Post Office Square— Suite 100, Boston, MA. EPA requests that if at all possible, you contact the contact listed in the **FOR FURTHER**
**INFORMATION CONTACT** section to schedule your inspection. The Regional Office’s official hours of business are Monday through Friday, 8:30 to 4:30, excluding legal holidays.

Copies of the documents relevant to this action are also available for public inspection during normal business hours, by appointment at Division of Air Quality Control, Department of Environmental Protection, One Winter Street, 8th Floor, Boston, MA 02108.

**FOR FURTHER INFORMATION CONTACT :**  Anne K. McWilliams, Air Quality Planning Unit, U.S. Environmental Protection Agency, EPA New England Regional Office, Office of Ecosystem Protection, 5 Post Office Square—Suite 100, (mail code OEP05–2), Boston, MA 02109—3912, telephone number (617) 918–1697, fax number (617) 918–0697, email mcwilliams.anne@epa,gov.

**SUPPLEMENTARY INFORMATION :** 
Table of Contents
I. Background and Purpose II. What action is EPA taking? III. Summary of SIP Revision IV. Final Action V. Statutory and Executive Order Reviews I. Background and Purpose

On April 14, 2010, the Massachusetts Department of Environmental Protection (DEP) submitted a revision to its State Implementation Plan (SIP) for Massachusetts. The SIP revision consists of a minor modification to the carbon monoxide (CO) maintenance plan for Lowell, Massachusetts. (A redesignation request and a maintenance plan for the Lowell CO nonattainment area were approved by EPA on February 19, 2002 (67 FR 7272).) The modification changes the triggering mechanism which will be used by the State to determine if contingency measures need to be implemented in Lowell.

On February 17, 2011, EPA proposed approval of this SIP revision (76 FR 9281). EPA received no comments on the proposed rulemaking. II. What action is EPA taking?

EPA is approving revisions to the Lowell carbon monoxide maintenance plan submitted by the State of Massachusetts on April 14, 2010. Specifically, EPA is approving the State’s modification of the portion of the maintenance plan used to determine when contingency measures need to be triggered to reduce CO concentrations in Lowell. This action will allow the discontinuation of CO monitoring in the Lowell maintenance area. Other specific requirements of the revised carbon monoxide plan for Lowell, Massachusetts and the rationale for EPA’s proposed action are explained in the Notice of Proposed Rulemaking (NPR) and will not be restated here. III. Summary of SIP Revision

On April 14, 2010, the Massachusetts Department of Environmental Protection submitted a SIP revision to EPA that contains a modification to its CO maintenance plan for the Lowell CO maintenance area. The modifications to the maintenance plan change the triggering mechanism by which contingency measures would be implemented and will allow the State to discontinue CO monitoring in the Lowell maintenance area. CO concentrations measured in Lowell have


### 27909 Federal Register / Vol. 76, No. 93 / Friday, May 13, 2011 / Rules and Regulations

1 On January 28, 2011, EPA proposed to retain the existing CO standard. In this action, EPA has also proposed an increase in near-road CO monitoring. Due to the low CO concentrations recorded at the Lowell monitor and applicable siting criteria, this monitor would not meet the requirements for a near-road monitor. been below the National Ambient Air Quality Standard (NAAQS) for nearly 25 years, and in recent years, maximum measured concentrations have been less than 30% of the 9 parts per million (ppm) 8-hour CO standard. 1 In this SIP revision, the State of Massachusetts is establishing an alternative triggering mechanism, which will rely on CO data from a nearby CO monitor in Worcester, Massachusetts (MA).

Under the previous maintenance plan, contingency measures in Lowell were triggered when a violation of the CO NAAQS was measured in Lowell. Under the revised maintenance plan, Massachusetts will rely on data from the Worcester CO monitor to determinewhen and if monitoring will be reestablished in the Lowell maintenance area, and, in some circumstances, when contingency measures will be triggered in the Lowell maintenance area.

Massachusetts will discontinue CO monitoring in Lowell. Massachusetts DEP will continue to collect and review CO monitoring data from nearby Worcester, MA on an on-going basis. In the event the second highest CO concentration in any calendar year monitored in Worcester reaches 75 percent of the federal 1-hour or 8-hour NAAQS for CO (35 and 9 ppm, respectively), Massachusetts will, within 9 months of recording such concentrations, re-establish a CO monitoring site in Lowell consistent with EPA siting criteria, and resume analyzing and reporting those data. Massachusetts will continue to commit to implement its contingency program in Lowell in the event that a CO violation (the ‘‘ contingency trigger′′) is monitored at the re-established Lowell monitoring site at any time during the maintenance period and to consider one or more of the other EPA-approved measures listed in the 2001 Maintenance Plan if necessary to reduce CO levels.

If the Worcester CO monitor measures a violation of the either the federal 1-hour or 8-hour NAAQS for CO, the contingency measures in 2001 Maintenance Plan for Lowell will be implemented in Lowell, as well as triggering contingency measures in Worcester under the terms of the existing Maintenance Plan for Worcester, until a re-established Lowell CO monitor shows that the area is in attainment of the CO standard. When implementing contingency measures, Massachusetts will review and implement the measures necessary to remedy the violation, including transportation control measures (TCM) or other additional vehicle or fuel controls.

IV. Final Action

EPA is approving the revisions to the Lowell CO maintenance plan submitted by the State of Massachusetts on April 14, 2010. Specifically, EPA is approving the State’s request to modify the portion of the maintenance plan used to determine when contingency measures need to be implemented in Lowell. As described in more detail above, the State will shut down the Lowell CO monitor and rely on data from the CO monitor in Worcester to determine when and if monitoring will be reestablished in the Lowell maintenance area, and, in some circumstances, when contingency measures will be triggered in the Lowell maintenance area. V. Statutory and Executive Order Reviews

Under the Clean Air Act, the Administrator is required to approve a SIP submission that complies with the provisions of the Act 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 Clean Air Act. 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 Order 12866 (58 FR 51735, October 4, 1993);

• 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 Clean Air Act; 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, this rule does not have tribal implications as specified by Executive Order 13175 (65 FR 67249, November 9, 2000), because the SIP is not approved to apply in Indian country located in the state, and EPA notes that it will not impose substantial direct costs on tribal governments or preempt tribal law.

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 Clean Air Act, petitions for judicial review of this action must be filed in the United States Court of Appeals for the appropriate circuit by July 12, 2011. 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, Carbon monoxide, Incorporation by reference,


### 27910 Federal Register / Vol. 76, No. 93 / Friday, May 13, 2011 / Rules and Regulations

Intergovernmental relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting and recordkeeping requirements, Sulfur oxides, Volatile organic compounds.

Dated: April 29, 2011. Ira W. Leighton, Acting Regional Administrator, EPA Region

1. Part 52 of chapter I, title 40 of the Code of Federal Regulations is amended as follows:

**PART 52—[AMENDED]**

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

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

**Subpart W—Massachusetts**

■ 2. Section 52.1132 is amended by adding paragraph (e) to read as follows:

**§ 52.1132 Control strategy: Carbon Monoxide.** 

* * * * *

(e) Approval —On April 14, 2010, the Massachusetts Department of Environmental Protection submitted a modification to the Lowell maintenance plan approved in paragraph (c) of this section. Massachusetts will not conduct CO monitoring in Lowell, but instead commits to continue to collect and review CO monitoring data from nearby Worcester, MA on an on-going basis. In the event the second highest CO concentration in any calendar year monitored in Worcester reaches 75 percent of the federal 1-hour or 8-hour national ambient air quality standard for CO, Massachusetts will, within 9 months of recording such concentrations, re-establish a CO monitoring site in Lowell consistent with EPA citing criteria, and resume analyzing and reporting those data. Massachusetts commits to implement its contingency program in Lowell in the event that a CO violation is monitored at the re-established Lowell monitoring site at any time during the maintenance period. If the Worcester CO monitor measures a violation of either the federal 1-hour or 8-hour NAAQS for CO, contingency measures will be implemented in Lowell as well, until a re-established CO monitor in Lowell shows that the area is in attainment of the CO standard.

[FR Doc. 2011–11722 Filed 5–12–11; 8:45 am]

**BILLING CODE 6560–50–P ENVIRONMENTAL PROTECTION**  **AGENCY**

**40 CFR Part 721**

**[EPA–HQ–OPPT–2009–0669; FRL–8871–5]**

**RIN 2070–AB27**

**Modification of the Significant New Uses of 2-Propen-1-one, 1-(4-**  **morpholinyl)-**

**AGENCY :**  Environmental Protection Agency (EPA).

**ACTION :**  Final rule.

**SUMMARY :**  EPA is finalizing an amendment to the significant new use rule (SNUR) under the Toxic Substances Control Act (TSCA) for 2–Propen-1-one, 1-(4-morpholinyl)- (CAS No. 5117–12– 4). This action requires persons who intend to manufacture, import, or process the chemical substance for a use that is designated as a significant new use by this final rule to notify EPA at least 90 days before commencing that activity. EPA believes that this action is necessary because the chemical substance may be hazardous to human health. The required notification would provide EPA with the opportunity to evaluate the intended use and, if necessary, to prohibit or limit that activity before it occurs.

**DATES :**  This final rule is effective June 13, 2011.

**ADDRESSES :**  EPA has established a docket for this action under docket identification (ID) number EPA–HQ– OPPT–2009–0669. All documents in the docket are listed in the docket index available at http://www.regulations.gov

. Although listed in the index, some information is not publicly available,
e.g., 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 in the electronic docket at http://www.regulations.gov, or, if only available in hard copy, at the OPPT Docket. The OPPT Docket is located in the EPA Docket Center (EPA/DC) at Rm. 3334, EPA West Bldg., 1301 Constitution Ave., NW., Washington, DC. The EPA/DC Public Reading Room hours of operation are 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal holidays. The telephone number of the EPA/DC Public Reading Room is (202) 566–1744, and the telephone number for the OPPT Docket is (202) 566–0280. Docket visitors are required to show photographic identification, pass through a metal detector, and sign the EPA visitor log. All visitor bags are processed through an X-ray machine and subject to search. Visitors will be provided an EPA/DC badge that must be visible at all times in the building and returned upon departure.

**FOR FURTHER INFORMATION CONTACT :**  For technical information contact: Tracey Klosterman, Chemical Control Division (7405M), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460–0001; telephone number: (202) 564–2209; e-mail address: klosterman.tracey@epa.gov

.

For general information contact: The TSCA–Hotline, ABVI–Goodwill, 422 South Clinton Ave., Rochester, NY 14620; telephone number: (202) 554– 1404; e-mail address: TSCA– Hotline@epa.gov

. **SUPPLEMENTARY INFORMATION :**  I. Does this action apply to me?

You may be potentially affected by this action if you manufacture, import, process, or use 2-Propen-1-one, 1-(4- morpholinyl)-(CAS No. 5117–12–4). Potentially affected entities may include, but are not limited to:

• Manufacturers, importers, or processors of the subject chemical substance (NAICS codes 325 and 324110), e.g., chemical manufacturing and petroleum refineries.

This listing is not intended to be exhaustive, but rather provides a guide for readers regarding entities likely to be affected by this action. Other types of entities not listed in this unit could also be affected. The North American Industrial Classification System (NAICS) codes have been provided to assist you and others in determining whether this action might apply to certain entities. To determine whether you or your business may be affected by this action, you should carefully examine the applicability provisions in § 721.5. If you have any questions regarding the applicability of this action to a particular entity, consult the technical person listed under **FOR**
**FURTHER INFORMATION CONTACT**

.

This action may also affect certain entities through pre-existing import certification and export notification rules under TSCA. Chemical importers are subject to the TSCA section 13 (15 U.S.C. 2612) import certification requirements promulgated at 19 CFR 12.118 through 12.127; see also 19 CFR 127.28. Chemical importers must certify that the shipment of the chemical substance complies with all applicable rules and orders under TSCA. Importers of chemicals subject to a modified