### 34005 Federal Register / Vol. 72, No. 118 / Wednesday, June 20, 2007 / Notices

assessment of the secondary NAAQS for NO X and SO X .

As part of the NAAQS reviews, the National Center for Environmental Assessment (NCEA) within EPA ’ s Office of Research and Development (ORD) will assess newly available scientific information in Integrated Science Assessment (ISA) documents (formerly known as Air Quality Criteria Documents) that will be supported by more detailed and comprehensive annexes. The assessments in these documents are intended to provide the scientific bases for the reviews of the NAAQS. EPA ’ s Office of Air Quality Planning and Standards (OAQPS) will prepare risk and exposure assessment analyses, as appropriate, drawing upon the scientific evidence summarized in the ISA. Subsequently, the EPA expects to prepare a policy assessment, to be published as an advance notice of proposed rulemaking, that will discuss, in part, the findings of the science and risk/exposure assessments related to the adequacy of the standards and describe a range of options for revising or retaining the NAAQS.

EPA is holding this workshop to inform the Agency ’ s assessment of the scientific evidence for the review of the secondary NAAQS for NO X and SO X . The workshop will address various issues involved in the preparation of the draft material for the ISA and annexes. This workshop is planned to helpensure that the ISA provides an up-todate, state-of-the-art scientific basis for the review of the NAAQS. Workshop discussions will be focused on identifying and integrating scientific evidence that is relevant for future risk and exposure analyses to include in the ISA.

This workshop is being held in conjunction with a workshop entitled

‘‘ Workshop to Discuss Policy-Relevant Science to Inform EPA ’ s Integrated Plan for the Review of the Secondary Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) ’’ (see accompanying Notice of Workshop).

Dated: June 14, 2007. Peter W. Preuss, Director, National Center for Environmental Assessment. [FR Doc. E7

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**Workshop To Discuss Policy-Relevant Science To Inform EPA**  **’ s Integrated**  **Plan for the Review of the Secondary Particulate Matter (PM) National**  **Ambient Air Quality Standards (NAAQS)** 

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

**ACTION :**  Notice of workshop.

**SUMMARY :**  The EPA is announcing that a workshop entitled ‘‘ Workshop to Discuss Policy-Relevant Science to Inform EPA ’ s Integrated Plan for the Review of the Secondary Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) ’’ is being organized by EPA ’ s National Center for Environmental Assessment (NCEA), Office of Research and Development and EPA ’ s Office of Air Quality Planning and Standards (OAQPS), Office of Air and Radiation. The workshop will be held on July 16, 2007 in Chapel Hill, North Carolina and will be open to attendance by interestedpublic observers on a first-come, firstserved basis up to the limits of available space. **DATES :**  The workshop entitled

‘‘ Workshop to Discuss Policy-Relevant Science to Inform EPA ’ s Integrated Plan for the Review of the Secondary Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) ’’ will be held on July 16, 2007.

**ADDRESSES :**  The workshop will be held at the Carolina Inn in Chapel Hill, North Carolina. An EPA contractor, SAIC, is providing logistical support for the workshop. For further information on the workshop, contact Ms. Kristen Wheeler, SAIC Conference Coordinator, 11251 Roger Bacon Drive, Reston, VA 20190, telephone: 703

– 318

– 4535; facsimile: 703

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– 4755; e-mail: wheelerkr@saic.com.

**FOR FURTHER INFORMATION CONTACT :**  Questions regarding information, registration, and logistics for the workshops should be directed to the SAIC Conference Coordinator listed in **ADDRESSES** above.

Additional questions regarding the secondary PM NAAQS workshop should be directed to Dr. Paul Wagner, U.S. EPA, NCEA, telephone: 919

– 541

– 2255; facsimile: 919

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– 0237; e-mail: wagner.paulf@epa.gov.

**SUPPLEMENTARY INFORMATION :**  I. Summary of Information About the Workshops

The U.S. Clean Air Act requires that EPA carry out periodic reviews of the national ambient air quality standards (NAAQS) for major ‘‘ criteria ’’ air pollutants and to revise the NAAAQS for a given pollutant, as appropriate. The Agency ’ s last review of the PM NAAQS was completed in September 2006 with the promulgation of revisions to some aspects of the PM standards to provide requisite protection of public health and welfare (71 FR 61144, October 17, 2006). Initiating the next review of these standards at this time is consistent with the Clean Air Act ’ s requirement that the Agency periodically review the latest scientific information and the standards. It is also consistent with the Agency ’ s new NAAQS review process. For more information on the NAAQS review process, please see http://www.epa.gov/ ttn/naaqs/.

The workshop will provide an opportunity for external experts as well as EPA staff to highlight significant new and emerging research, and to make individual recommendations to the Agency regarding the design and scopeof the review for the secondary (welfarebased) PM standards to ensure it addresses key policy-relevant issues and considers the new science relevant to informing our understanding of these issues. A similar workshop to discuss planning for the review of the primary (health-based) PM NAAQS will be held on July 11, 12, and 13, 2007 in Research Triangle Park, North Carolina. Please see the announcement elsewhere in today ’ s Federal Register

.

Based in large part on the input received during the primary and secondary PM workshops, EPA intends to develop a draft integrated PM NAAQS review plan that will outline the schedule, process, and approaches for evaluating the relevant scientific information and addressing the key policy-relevant issues to be considered in this review. The Clean Air Scientific Advisory Committee (CASAC) will be asked to conduct a consultation with the Agency on the draft integrated plan later this year, and the public will have the opportunity to comment on the draft integrated plan as well. The final integrated plan will be used to frame each of the major elements of the PM review under the new NAAQS process: An integrated science assessment document, a risk/exposure assessment report, and a policy assessment to be published as an advance notice of proposed rulemaking (ANPR).


### 34006 Federal Register / Vol. 72, No. 118 / Wednesday, June 20, 2007 / Notices

Immediately following this workshop, EPA is sponsoring a workshop entitled

‘‘ Oxides of Nitrogen and Sulfur (NO X / SO X ) Secondary National Ambient Air Quality Standards (NAAQS) Workshop. ’’ These workshops are being held in close coordination because EPA has recognized that some overlap is likely in the issues discussed and areas of expertise involved in the review of secondary standards for PM, Oxides of Nitrogen (NO X ), and Sulfur Oxides (SO X ).

Dated: June 14, 2007. P.W. Preuss, Director, National Center for Environmental Assessment. [FR Doc. E7

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**Colorado State Plan for Certification of Applicators of Restricted Use**  **Pesticides; Notice of Approval**

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

**ACTION :**  Notice.

**SUMMARY :**  In the Federal Register of December 22, 2006, EPA issued a notice announcing its intent to approve an amended Colorado State Plan for the certification of applicators of restricted use pesticides contingent upon Colorado ’ s promulgation of appropriate revised State Rules and Regulations pertaining to the Administration and Enforcement of the Colorado Pesticide Applicators ’ Act by January 1, 2007. In that notice, EPA solicited comments from the public on the proposed action to approve the amended Colorado State Plan. The amended Certification Plan Colorado submitted to EPA contained several statutory, regulatory, and programmatic changes to its current Certification Plan. The proposed amendments provide details for the certification of both private and commercial pesticide applicators and subsequent enforcement of pesticide laws and regulations pursuant to the Colorado Pesticide Applicator ’ s Act. In addition, the amended State Plan adds three new commercial pesticide applicator subcategories. No comments were received in response to that Federal Register notice and Colorado promulgated the appropriate revised State Rules and Regulations pertaining to the Administration and Enforcement of the Colorado Pesticide Applicators ’ Act on January 1, 2007. Therefore, EPA hereby approves the amended Colorado State Plan.
**FOR FURTHER INFORMATION CONTACT :**  Peg Perreault, EPA Region 8, Pollution Prevention, Pesticides, and Toxics Program, 8P

–P3T, 1595 Wynkoop St., Denver, CO 80202

– 1129; telephone number: (303) 312

– 6286; e-mail address: perreault.peg@epa.gov

. **SUPPLEMENTARY INFORMATION :**  I. General Information A. Does this Action Apply to Me?

This action is directed to the public in general. This action may, however, be of interest to those involved in agriculture and anyone involved with the distribution and application of pesticides for agricultural purposes. Others involved with pesticides in a non-agricultural setting may also be affected. In addition, it may be of interest to others, such as, those persons who are or may be required to conduct testing of chemical substances under the Federal Food, Drug, and Cosmetic Act (FFDCA), or the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). Since other entities may also be interested, the Agency has not attempted to describe all the specific entities that may be affected by this action. If you have any questions regarding the applicability of this action to a particular entity, consult the person listed under **FOR FURTHER INFORMATION CONTACT** 

. B. How Can I Get Copies of this Document and Other Related Information?

1. Docket. EPA has established a docket for this action under docket identification (ID) number EPA

–HQ

– OPPT

– 2006

– 0847. Publicly available docket materials are available either in the electronic docket at http:// www.regulations.gov, or, if only available in hard copy, at the Office of Pesticide Programs (OPP) Regulatory Public Docket in Rm. S

– 4400, One Potomac Yard (South Building), 2777 S. Crystal Drive, Arlington, VA. The hours of operation of this Docket facility are from 8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays. The Docket facility telephone number is (703) 305

– 5805.

2. Electronic access . You may access this Federal Register document electronically through the EPA Internet under the ‘‘ Federal Register ’’ listings at http://www.epa.gov/fedrgstr

. II. What Action is the Agency Taking?

EPA is approving the amended Colorado State Certification Plan. This approval is based upon EPA ’ s review of the Colorado State Plan and finding it in compliance with FIFRA and its implementing regulations at 40 CFR part 171. Further, there were no public comments submitted in response to the earlier Federal Register notice (71 FR 77014) (FRL

– 8102

– 8) soliciting comments and Colorado promulgated the appropriate revised State Rules and Regulations pertaining to the Administration and Enforcement of Colorado Pesticide Applicators ’ Act. Therefore, the amended Colorado State Certification Plan is hereby approved. List of Subjects

Environmental protection, Education, Pests and pesticides.

Dated: May 30, 2007. Robert E. Roberts, Regional Administrator, Region 8. [FR Doc. E7

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**Chloropicrin,Dazomet, 1,3- Dichloropropene, Metam potassium,**  **Metam sodium, and Methyl bromide; Extension of Comment Periods** 

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

**ACTION :**  Extension of comment periods.

**SUMMARY :**  EPA issued five notices in the Federal Register of May 2, 2007, announcing the availability and seeking comments on EPA ’ s revised human health risk assessments for the fumigants chloropicrin, dazomet, 1,3- dichloropropene, metam potassium, metam sodium, and methyl bromide. This notice announces EPA ’ s decision to extend the comment period from July 2, 2007 to September 3, 2007, for the five actions.

**DATES :**  Comments, identified by the applicable docket identification number (see the May 2, 2007 notices) must now be received on or before September 3, 2007.

**ADDRESSES :**  Follow the detailed instructions as provided under **ADDRESSES** in the Federal Register documents of May 2, 2007.

**FOR FURTHER INFORMATION CONTACT :**  The applicable contact persons listed in the Federal Register documents of May 2, 2007.

**SUPPLEMENTARY INFORMATION :**