[Federal Register Volume 72, Number 214 (Tuesday, November 6, 2007)]
[Proposed Rules]
[Pages 62615-62616]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-21613]



40 CFR Part 52

[EPA-R08-OAR-2007-0622; FRL-8490-5]

Approval and Promulgation of Air Quality Implementation Plans; 
State of Colorado; Revised Denver PM10 Maintenance Plan

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.


SUMMARY: EPA is proposing to take direct final action approving a State 
Implementation Plan (SIP) revision submitted by the State of Colorado. 
On September 25, 2006, the Governor's designee submitted a revised plan 
for particulate matter with an aerodynamic diameter, less than or equal 
to 10 microns (PM10) for the Denver metropolitan area for the PM10 
National Ambient Air Quality Standard (NAAQS). This revised maintenance 
plan addresses maintenance of the PM10 standard for a second ten-year 
period beyond redesignation, extends the horizon years, and contains 
revised transportation conformity budgets. EPA is approving the removal 
of Regulation No. 11, ``Motor Vehicle Emissions Inspection Program'' 
from Denver's revised PM10 maintenance plan. In addition, EPA is 
approving a transportation budget trading protocol for estimating the 
PM10 and nitrogen oxides (NOx) for each conformity determination. This 
action is being taken under section 110 of the Clean Air Act.
    In the ``Rules and Regulations'' section of this Federal Register, 
EPA is approving the State's SIP revision as a direct final rule 
without prior proposal because the Agency views this as a 
noncontroversial SIP revision and anticipates no adverse comments. A 
detailed rationale for the approval is set forth in the preamble to the 
direct final rule. If EPA receives no adverse comments, EPA will not 
take further action on this proposed rule. If EPA receives adverse 
comments, EPA will withdraw the direct final rule and it will not take 
effect. EPA will address all public comments in a subsequent final rule 
based on this proposed rule. EPA will not institute a second comment

[[Page 62616]]

period on this action. Any parties interested in commenting must do so 
at this time. Please note that if EPA receives adverse comment on an 
amendment, paragraph, or section of the rule and if that provision may 
be severed from the remainder of the rule, EPA may adopt as final those 
provisions of the rule that are not the subject of an adverse comment.

DATES: Written comments must be received on or before December 6, 2007.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R08-
OAR-2007-0622, by one of the following methods:
     http://www.regulations.gov. Follow the on-line 
instructions for submitting comments.
     E-mail: [email protected] and [email protected].
     Fax: (303) 312-6064 (please alert the individual listed in 
the FOR FURTHER INFORMATION CONTACT, if you are faxing comments).
     Mail: Callie A. Videtich, Director, Air and Radiation 
Program, Environmental Protection Agency (EPA), Region 8, Mailcode 8P-
AR, 1595 Wynkoop Street, Denver, Colorado 80202-1129.
     Hand Delivery: Callie A. Videtich, Director, Air and 
Radiation Program, Environmental Protection Agency (EPA), Region 8, 
Mailcode 8P-AR, 1595 Wynkoop Street, Suite 300, Denver, Colorado 80202-
1129. Such deliveries are only accepted Monday through Friday, 8 a.m. 
to 4:30 p.m., excluding Federal holidays. Special arrangements should 
be made for deliveries of boxed information.
    Please see the direct final rule which is located in the Rules 
Section of this Federal Register for detailed instructions on how to 
submit comments.

FOR FURTHER INFORMATION CONTACT: Kerri Fiedler, Air and Radiation 
Program, Environmental Protection Agency (EPA), Region 8, Mailcode 8P-
AR, 1595 Wynkoop Street, Denver, Colorado 80202-1129, phone (303) 312-
6493, and e-mail at: [email protected].

SUPPLEMENTARY INFORMATION: See the information provided in the Direct 
Final action of the same title which is located in the Rules and 
Regulations Section of this Federal Register.

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

    Dated: October 22, 2007.
Robert E. Roberts,
Regional Administrator, Region VIII.
 [FR Doc. E7-21613 Filed 11-5-07; 8:45 am]