12586 Federal Register / Vol. 62, No. 51 / Monday, March 17, 1997 / Proposed Rules

dichloro-1,1,1,2,2-pentafluoropropane

(HCFC–225ca); 1,3-dichloro-1,1,2,2,3-

pentafluoropropane (HCFC–225cb);

1,1,1,2,3,4,4,5,5,5-decafluoropentane

(HFC 43–10mee); difluoromethane

(HFC–32); ethylfluoride (HFC–161);

1,1,1,3,3,3-hexafluoropropane (HFC–

236fa); 1,1,2,2,3-pentafluoropentane

(HFC–245ca); 1,1,2,3,3-

pentafluoropropane (HFC–245ea);

1,1,1,3,4-pentafluoropentane (HFC–

245eb); 1,1,1,3,3-pentafluoropentane

(HFC–245fa); 1,1,1,2,3,3-

hexafluoropropane (HFC–236ea);

1,1,1,3,3-pentafluorobutane (HFC–

365mfc); chlorofluoromethane (HCFC–

31); 1 chloro-1-fluoroethane (HCFC–

151a); 1,2-dichloro-1,1,2-trifluoroethane

(HCFC–123a); 1,1,1,2,2,3,3,4,4-

nonafluoro-4-methoxy-butane

(C4F9OCH3); 2-

(difluoromethoxymethyl)-1,1,1,2,3,3,3-

heptafluoropropane ((CF3)2CFCF2OCH3);

1-ethoxy-1,1,2,2,3,3,4,4,4-

nonafluorobutane (C4F9OC2H5); 2-

(ethoxydifluoromethyl)-1,1,1,2,3,3,3-

heptafluoropropane

((CF3)2CFCF2OC2H5); and

perfluorocarbon compounds which fall

into these classes:

(i) cyclic, branched, or linear,

completely fluorinated alkanes;

(ii) cyclic, branched, or linear,

completely fluorinated ethers with no

unsaturations;

(iii) cyclic, branched, or linear,

completely fluorinated tertiary amines

with no unsaturations; and

(iv) sulfur containing

perfluorocarbons with no unsaturations

and with sulfur bonds only to carbon

and fluorine.

* * * * *

[FR Doc. 97–6653 Filed 3–14–97; 8:45 am]

BILLING CODE: 6560–50–P

40 CFR Part 52

[AZ 059–0005b; FRL–5697–4]

Approval and Promulgation of State

Implementation Plans; Arizona State

Implementation Plan Revision,

Maricopa County Environmental

Services Department

AGENCY: Environmental Protection

Agency (EPA).

ACTION: Proposed rule.

SUMMARY: EPA is proposing to approve

a revision to the Arizona State

Implementation Plan (SIP) which

concerns the control of volatile organic

compound (VOC) emissions from

Commercial Bread Bakeries.

The intended effect of proposing

approval of this rule is to regulate

emissions of VOCs in accordance with

the requirements of the Clean Air Act,

as amended in 1990 (CAA or the Act).

In the Final Rules Section of this

Federal Register, the EPA is approving

the state’s SIP revision as a direct final

rule without prior proposal because the

Agency views this as a noncontroversial

revision amendment and anticipates no

adverse comments. A detailed rationale

for this approval is set forth in the direct

final rule. If no adverse comments are

received in response to this proposed

rule, no further activity is contemplated

in relation to this rule. If EPA receives

adverse comments, the direct final rule

will be withdrawn and all public

comments received will be addressed in

a subsequent final rule based on this

proposed rule. The EPA will not

institute a second comment period on

this document. Any parties interested in

commenting on this action should do so

at this time.

DATES: Comments on this proposed rule

must be received in writing by April 16,

1997.

ADDRESSES: Written comments on this

action should be addressed to: Andrew

Steckel, Rulemaking Office (Air-4), Air

Division, U.S. Environmental Protection

Agency, Region 9, 75 Hawthorne Street,

San Francisco, CA 94105–3901.

Copies of the rule and EPA’s

evaluation report of the rule are

available for public inspection at EPA’s

Region 9 office during normal business

hours. Copies of the submitted rule are

also available for inspection at the

following locations:

Arizona Department of Environmental

Quality, 3033 North Central Avenue,

Phoenix, AZ 85012

Maricopa County Department of

Environmental Services, 2406 South

24th Street, Suite E–204, Phoenix, AZ

85034–6822.

FOR FURTHER INFORMATION CONTACT:

Christine Vineyard, Rulemaking Officer

(Air-4), Air Division, U.S.

Environmental Protection Agency,

Region 9, 75 Hawthorne Street, San

Francisco, CA 94105–3901, Telephone:

(415) 744–1197).

SUPPLEMENTARY INFORMATION: This

document concerns Maricopa County

Environmental Services Department

Rule 343, Commercial Bread Bakeries,

submitted to EPA on August 31, 1995 by

the Arizona Department of

Environmental Quality. For further

information, please see the information

provided in the Direct Final action

which is located in the Rules Section of

this Federal Register.

Authority: 42 U.S.C. 7401–7671q.

Dated: February 19, 1997.

Nora L. McGee,

Acting Regional Administrator.

[FR Doc. 97–5973 Filed 3–14–97; 8:45 am]

BILLING CODE 6560–50–P

40 CFR Part 80

[FRL–5710–6]

Fuels and Fuel Additives; Elimination

of Oxygenated Gasoline Program

Reformulated Gasoline (OPRG)

Category From the Reformulated

Gasoline Regulations

AGENCY: Environmental Protection

Agency (EPA).

ACTION: Proposed rule.

SUMMARY: In this action, EPA is

proposing to amend the reformulated

gasoline (RFG) regulations to eliminate

the separate treatment for a category of

gasoline used in oxygen averaging. This

category, oxygenated gasoline program

reformulated gasoline (OPRG), includes

gasoline intended for use in a state

oxygenated gasoline program control

area during the winter time. Under the

current RFG regulations, a refiner must

meet the oxygen content standards for

the entire pool of gasoline they produce,

and for the pool of gasoline they

produce that is non-OPRG. EPA is

proposing this action because it no

longer believes a distinction between

OPRG and non-OPRG is necessary and

because removal of the OPRG category

would add flexibility and reduce

compliance costs for regulated parties,

without producing a negative

environmental impact.

DATES: Comments on this proposed rule

must be received by April 16, 1997. EPA

does not plan to hold a public hearing

on this proposed rule, unless one is

requested. If a request is received by

April 1, 1997, a public hearing will be

held. If such a hearing is held,

comments must be received within 30

days of the date of such hearing.

ADDRESSES: Written comments on this

proposed action should be addressed to

Public Docket # A–97–01, Air Docket

Section (Room M–1500, Waterside

Mall), Environmental Protection

Agency, 401 M Street, SW., Washington,

DC 20460. Documents related to this

proposed rule have been placed in the

public docket and may be inspected

between the hours of 8:00 a.m. to 5:30

p.m., Monday through Friday. A

reasonable fee may be charged for

copying docket material. Those wishing

to notify EPA of their intent to request

an opportunity for a public hearing on

this action should contact Anne-Marie