[Federal Register Volume 62, Number 35 (Friday, February 21, 1997)]
[Proposed Rules]
[Page 7977]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-4329]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 50

[AD-FRL-5692-2]
RIN 2060-AE66


National Ambient Air Quality Standards for Particulate Matter: 
Proposed Appendix L Rule

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of Availability of Supplemental Information.

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SUMMARY: The purpose of this notice is to inform the public that EPA is 
considering minor technical changes to the proposed Federal Reference 
Method (FRM) for PM2.5 sampling published on December 13, 1996. 
The nature of these changes include improvements in the inlet assembly 
to prevent precipitation inside the inlet and reduce solar heating, and 
other miscellaneous modifications to provide more reliable sampling 
capability. There may be unanticipated modifications, which will be 
described in the docket and elsewhere. A description of these changes 
will be placed in Docket No. A-95-54 and, when available posted on 
EPA's Technical Transfer Network/Bulletin Board System (TTN/BBS). If 
EPA concludes that it is necessary to evaluate additional changes, 
these will be placed in the docket at a later date.

FOR FURTHER INFORMATION CONTACT: For questions regarding the FRM, 
contact Neil H. Frank at (919) 541-5560. For general questions 
regarding the NAAQS contact Patrica Koman at (919) 431-5170.

SUPPLEMENTARY INFORMATION:

    Docket. Docket No. A-95-54, containing supporting information used 
in developing the aforementioned changes in the FRM hardware and/or 
method is available for public inspection and copying between 8 a.m. 
and 5:30 p.m. on weekdays, at the U. S. Environmental Protection 
Agency, 401 M Street, SW, Washington, DC 20460. A reasonable fee may be 
charged for copying.
    Documents Available Electronically. An electronic version of this 
action as well as the December 13, 1996 Federal Register proposal 
notice will be available for download from EPA's TTN/BBS. The service 
is free, except for the cost of a telephone call. Dial (919) 541-5742 
for data transfer of up to 14,400 bits per second. This information is 
available from both the Clean Air Act Amendments (CAAA) technical area 
and the Ambient Monitoring Technology Information Center (AMTIC) 
technical area. The TTN is also available via the Internet, TTN 2000 
CAAA Internet Web site at www address (http://134.67.104.12/html/caaa/
caaa.html#CAAM) and the AMTIC at www address (134.67.104.12/html/amtic/
amtic.html#AMOl). For more information on the TTN, contact the systems 
operator at (919) 541-5384.

    Dated: February 14, 1997.
Mary D. Nichols,
Assistant Administrator for Air and Radiation.
[FR Doc. 97-4329 Filed 2-20-97; 8:45 am]
BILLING CODE 6560-50-M