[Federal Register Volume 65, Number 118 (Monday, June 19, 2000)]
[Proposed Rules]
[Page 37926]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-15394]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[AZ092-002; FRL-6718-9]


Approval and Promulgation of Implementation Plans; Arizona--
Maricopa County PM-10 Nonattainment Area; Serious Area Plan for 
Attainment of the Annual PM-10 Standard; Reopening of Comment Period

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule; reopening of comment period.

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SUMMARY: EPA is reopening the comment period for its proposed action to 
approve provisions of the Revised MAG 1999 Serious Area Particulate 
Plan for PM-10 for the Maricopa County (Phoenix) Nonattainment Area, 
February 2000, and the control measures on which it relies, that 
address the annual PM-10 national ambient air quality standard. As part 
of this proposal, we also proposed to grant Arizona's request to extend 
the Clean Air Act deadline for attaining the annual PM-10 standard in 
the Phoenix area from 2001 to 2006 and to approve two particulate 
matter rules adopted by the Maricopa County Environmental Services 
Department and Maricopa County's Residential Woodburning Restrictions 
Ordinance.

DATES: Any comments on this proposal must arrive by July 3, 2000.

ADDRESSES: Mail comments to Frances Wicher, Air Planning Office (AIR-
2), U.S. Environmental Protection Agency, Region IX, 75 Hawthorne 
Street, San Francisco, CA 94105-3901.

FOR FURTHER INFORMATION CONTACT: Frances Wicher, Air Planning Office 
(AIR-4), U.S. Environmental Protection Agency, Region IX, (415) 744-
1248.

SUPPLEMENTARY INFORMATION: On April 13, 2000, we proposed to approve 
the serious area air quality plan for attainment of the annual PM-10 
standard in the Phoenix, Arizona, metropolitan area. The proposed 
actions are based on our initial determination that this plan complies 
with the Clean Air Act's requirements for attainment of the annual PM-
10 standard in serious PM-10 nonattainment areas.
    Specifically, we proposed to approve the following elements of the 
plan as they apply to the annual PM-10 standard:
     The base year emissions inventory of PM-10 sources,
     The demonstration that the plan provides for 
implementation of reasonably available control measures (RACM) and best 
available control measures (BACM),
     The demonstration that attainment of the PM-10 annual 
standard by the Clean Air Act deadline of December 31, 2001 is 
impracticable,
     The demonstration that attainment of the PM-10 annual 
standard will occur by the most expeditious alternative date 
practicable, in this case, December 31, 2006,
     The demonstration that the plan provides for reasonable 
further progress and quantitative milestones,
     The demonstration that the plan includes to our 
satisfaction the most stringent measures found in the implementation 
plan of another state or are achieved in practice in another state, and 
can feasibly be implemented in the area,
     The demonstration that major sources of PM-10 precursors 
such as nitrogen oxides and sulfur dioxide do not contribute 
significantly to violations of the annual PM-10 standard, and
     The transportation conformity budget.
    We also proposed to grant Arizona's request to extend the 
attainment date for the annual PM-10 standard from December 31, 2001 to 
December 31, 2006.
    Finally, we are proposing to approve Maricopa County's fugitive 
dust rules, Rules 310 and 301.01, and its residential woodburning 
restriction ordinance.
    The proposal action provided a 60 day public comment period that 
ended on June 12, 2000. In response to a request from City of Tempe, 
Arizona, we are reopening the comment period for an additional 14 days.

    Dated: June 10, 2000.
Felicia Marcus,
Regional Administrator, Region IX.
[FR Doc. 00-15394 Filed 6-16-00; 8:45 am]
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