[Federal Register Volume 59, Number 151 (Monday, August 8, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-19290]
[[Page Unknown]]
[Federal Register: August 8, 1994]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 81
[FRL-5028-6]
Preparation, Adoption, and Submittal of PM10 State
Implementation Plan, Nonattainment Area Designation for Utah
AGENCY: Environmental Protection Agency (EPA).
ACTION: Information notice.
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SUMMARY: In this document, EPA is announcing its notification to the
Governor of Utah that EPA believes that Weber County should be
designated nonattainment for PM10.
DATES: No later than 120 days after the State's response, if any, EPA
must promulgate the redesignation it deems necessary and appropriate.
ADDRESSES: Information supporting the basis for notifying Utah, that
EPA believes Weber County's PM10 designation should be revised to
nonattainment, is available for inspection during normal business hours
at the Environmental Protection Agency, Region VIII, Air Programs
Branch, 999 18th Street, Suite 500, Denver, Colorado, 80202-2405.
FOR FURTHER INFORMATION CONTACT: Callie Videtich, Air Programs Branch,
U.S. Environmental Protection Agency, Region VIII, Denver, Colorado
80202-2466, (303) 293-1754.
SUPPLEMENTARY INFORMATION: On July 1, 1987, the EPA promulgated revised
national ambient air quality standards (NAAQS) for particulate matter
(PM) (52 FR 24634), replacing total suspended particulates (TSP) as the
indicator for PM with a new indicator called PM10 that includes
only those particles with an aerodynamic diameter less than or equal to
a nominal 10 microns. At the same time, EPA set forth regulations for
implementing the revised particulate matter standards and announced
EPA's State Implementation Plan (SIP) development policy elaborating
PM10 controls necessary to assure attainment and maintenance of
the PM10 NAAQS (see generally 52 FR 24672). The EPA adopted a
PM10 SIP development policy dividing all areas of the country into
three categories based on their probability of violating the new NAAQS:
(1) Areas with a strong likelihood of violating the new PM10 NAAQS
and requiring substantial SIP adjustment were placed in group I; (2)
areas where attainment of the PM10 NAAQS was possible and existing
SIP's needed less adjustment were placed in group II; and (3) areas
with a strong likelihood of attaining the PM10 NAAQS and,
therefore, needing adjustments only to their preconstruction review
program and monitoring network were placed in group III (52 FR 24672,
24679-24682).
Pursuant to section 107(d)(4)(B) of the Act, areas previously
identified as group I and other areas which had monitored violations of
the PM10 NAAQS prior to January 1, 1989, were, by operation of
law, designated nonattainment for PM10. Descriptions of the areas
identified as group I and II areas were clarified in a Federal Register
notice on October 31, 1990 (55 FR 45799). That notice also identified
group II areas which violated the standards as of January 1, 1989. The
EPA has announced all of the areas that were designated nonattainment
by operation of law for PM10 upon enactment of the Act in a
Federal Register notice dated November 6, 1991, (56 FR 56694) with
corrections to that notice made November 30, 1992 (57 FR 56762). In
these notices, EPA indicated that Weber County was designated
unclassifiable for PM10.
In addition, EPA is authorized to promulgate the designation of new
areas as nonattainment for PM10 pursuant to section 107(d)(3) of
the Act on the basis of air quality data, planning and control
considerations, or any other air quality-related consideration that the
Administrator deems appropriate. Based upon available information, on
July 14, 1994, EPA notified the Governor of Utah that it believes that
Weber County should be redesignated as nonattainment. Within 120 days
of EPA notification, the Governor of Utah must submit to EPA the
designation which he considers appropriate for Weber County. No later
than 120 days after the State's response, if any, EPA must promulgate
the redesignation it deems necessary and appropriate. If redesignated
to nonattainment, pursuant to section 189(a)(2)(B) of the Act, the
State must submit a PM10 SIP to EPA within 18 months after EPA
promulgates the nonattainment designation.
This Action
The EPA is, by this notice, identifying for the public Weber County
as an area which should be redesignated to nonattainment. Upon receipt
of a response by the Governor, EPA will review the submitted
information and conduct appropriate rulemaking, at which time the
public will have opportunity for review and comment.
List of Subjects in 40 CFR Part 81
Environmental protection, Air pollution control, Particulate
matter.
Authority: Sections 107(d), 110 and 301(a) of the Clean Air Act
as amended.
Dated: July 14, 1994.
William P. Yellowtail,
Regional Administrator.
[FR Doc. 94-19290 Filed 8-5-94; 8:45 am]
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