Approval and Promulgation of Air Quality Implementation Plans, Louisiana; Reasonable Available Control Technology for Emissions of Volatile Organic Compounds

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[LA35-1-7305a; FRL-5928-2]

Approval and Promulgation of Air Quality Implementation Plans,

Louisiana; Reasonable Available Control Technology for Emissions of

Volatile Organic Compounds

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

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SUMMARY: In this action, the EPA is conditionally approving in part,

and fully approving in part, revisions to the Louisiana State

Implementation Plan (SIP). The revisions incorporate regulations to

control Volatile Organic Compound (VOC) emissions from major stationary

sources by means of Reasonable Available Control Technology (RACT). The

major stationary source category controlled by the conditionally

approved regulation is Synthetic Organic Chemical Manufacturing

Industry (SOCMI) batch processes. The major stationary source

categories controlled by the fully approved regulations are SOCMI

reactors, SOCMI distillation, and industrial cleanup solvents. The

intended effect of these rules is to reduce VOC emissions into the

ambient air and thereby reduce ground-level ozone concentrations. Both

EPA's full and conditional approval of these regulations makes them

federally enforceable.

The full approval of the revisions to the SIP to control VOC

emissions from the batch processes source category is contingent upon

the State of Louisiana submitting a revision of the single unit

operation exemptions of the SOCMI batch processing rule. If the State

fails to submit a revision to the batch processing rule within one year

of the conditional approval of these SIP revisions, the conditional

approval will convert to a disapproval.

In the proposed rules section of today's Federal Register, the EPA

is proposing and seeking public comment on the same conditional and

final approvals of the Louisiana SIP that are discussed in this notice.

If adverse comments are received on these approvals, the EPA will

withdraw the direct final rule and address the comments received in a

subsequent final rule, based on the related proposed rule. No

additional opportunity for public comment will be provided.

DATES: This action is effective on February 2, 1998 unless adverse or

critical comments are received by January 2, 1998. If the effective

date is delayed, a timely notice will be published in the Federal

Register.

ADDRESSES: Written comments on this action should be addressed to Mr.

Thomas Diggs, Chief, Air Planning Section (6PD-L), at the EPA Region 6

Office listed below.

Copies of the documents relevant to this action are available for

public inspection during normal business hours at the following

locations. Interested persons wanting to examine these documents should

make an appointment with the appropriate office at least two working

days in advance.

Environmental Protection Agency, Region 6, Air Planning Section

(6PD-L), Multimedia Planning and Permitting Division, Region 6, Dallas,

1445 Ross Avenue, Texas 75202-2733, telephone: (214) 665-7214.

Air Quality Division, Louisiana Department of Environmental Quality

(LDEQ), 7290 Bluebonnet Boulevard, Baton Rouge, Louisiana 70810,

telephone: (504) 765-7247.

Documents which are incorporated by reference are available for

public inspection at the Air and Radiation Docket and Information

Center, Environmental Protection Agency, 401 M Street, SW., Washington,

DC 20460.

FOR FURTHER INFORMATION CONTACT: Mr. Eaton R. Weiler, Air Planning

Section (6PD-L), Multimedia Planning and Permitting Division,

Environmental Protection Agency, Region 6, 1445 Ross Avenue, Dallas,

Texas 75202-2733, telephone: (214) 665-2174.

SUPPLEMENTARY INFORMATION:

I. Background

A. Background of VOC RACT Rule Requirements

Section 172 of the Clean Air Act (the Act) as amended in 1990,

entitled Nonattainment Plan Provisions in General, requires that states

adopt RACT rules for major stationary sources of VOCs located in ozone

nonattainment areas. The RACT is defined as the lowest emission

limitation that a particular source is capable of meeting by the

application of control technology that is reasonably available,

considering technological and economic feasibility as defined in 44 FR

53761 (September 17, 1979). In accordance with section 108 of the Act,

the EPA publishes Control Technique Guideline (CTG) documents in order

to assist the States in developing RACT rules for source categories.

The CTGs provide information on available air pollution control

techniques and provide recommendations on what the EPA considers the

``presumptive norm'' for RACT.

Sections 182(b)(2) and 182(c) of the Act as amended in 1990 require

States to adopt RACT rules for three general groups of major stationary

sources of VOCs located in ozone nonattainment areas designated as

moderate or above. The first group consists of sources covered by an

existing CTG (a CTG issued prior to the enactment of the 1990 Act

amendments). The second group consists of sources covered by a CTG

issued after the enactment of the 1990 Act amendments. These CTGs are

referred to as ``post-enactment'' CTGs. The third group consists of

major sources not covered by a CTG. These sources are referred to as

``non-CTG'' sources.

Under section 302(j), the Act defines major source as any source

which has the potential to emit 100 tons per year or more of any air

contaminant unless otherwise expressly provided. Under section 182(c),

a major source is defined as any source which is located in an area

designated as a serious ozone non-attainment area and has the potential

to emit 50 tons per year or more of VOCs. Therefore, in the Baton Rouge

five parish serious ozone nonattainment area, a major source definition

is the potential to emit 50 tons per year or more of VOCs.

Under section 183 of the Act as amended in 1990, entitled Federal

Ozone Measures, the EPA is required to issue CTGs for 13 source

categories by November 15, 1993. Two specific source categories are

listed under section 183: aerospace coatings and solvents, and

shipbuilding operations. The other 11 categories are listed in 57 FR

18077 (April 28, 1992) and are as follows:

1. SOCMI distillation.

2. SOCMI reactors.

3. Wood furniture.

4. Plastic parts business machines.

5. Plastic parts coating (other).

6. Offset lithography.

7. Industrial wastewater.

8. SOCMI batch processing.

10. Volatile Organic Liquid (VOL) storage tanks.

11. Clean-up solvents.

To date, CTGs have been published for four of the thirteen source

categories: SOCMI distillation, SOCMI reactors, wood furniture, and

shipbuilding. As described in a January 20, 1994 memorandum from John

Seitz, Director of the EPA's Office of Air Quality Planning and

Standards, the EPA plans to make available Alternative Control

Technology (ACT) documents for the CTG source categories for which CTG

documents have not yet been published.

[[Page 63659]]

These ACT documents provide much of the same information as the CTG

documents, however, instead of establishing a presumptive norm for RACT

rule, these documents provide options for control.

On April 28, 1992 (57 FR 18077), the EPA interpreted the Act to

allow a State to submit a non-CTG rule by November 15, 1992, or to

defer submittal of a RACT rule for sources that the State anticipated

would be covered by a post-enactment CTG. For post-enactment CTGs, the

amended Act requires States to submit RACT rules in accordance with the

schedule specified in the corresponding CTG document. If the EPA failed

to issue a CTG by November 15, 1993, the responsibility shifted to the

State to submit a non-CTG RACT rule for those sources by November 15,

1994.

B. Negative Declarations

In agreement with EPA policy, if there are no major sources of VOC

emissions in a CTG source category located in a nonattainment area, the

State should submit a formal statement of the nonexistence of such

major sources, i.e., a negative declaration. On April 6 and June 20,

1994, the State of Louisiana submitted letters of negative declaration

for the following CTG source categories: aerospace coatings and

solvents, shipbuilding operations, offset lithography, plastic parts--

business machines, plastic parts--other, and wood furniture. The EPA

approved these letters on October 30, 1996, in 61 FR 55894. A CTG

document was published in April 1996, for wood furniture which lowered

the threshold for a source to be considered major in the wood furniture

source category to 25 tons per year or more in an ozone nonattainment

area. On January 28, 1997, the State of Louisiana submitted a letter of

negative declaration for the wood furniture category based on the lower

major source threshold.

II. State Submittal

On December 15, 1995, the State of Louisiana submitted to the EPA

five sets of rules which require six source categories to apply RACT to

VOC emissions from major stationary sources located in the Baton Rouge

ozone nonattainment area. In Louisiana, the following five parishes

areas are designated as serious: Ascension, East Baton Rouge,

Iberville, Livingston, and West Baton Rouge. The applicable source

categories are VOL tank storage, SOCMI reactors, SOCMI distillation,

SOCMI batch processes, industrial wastewater, and industrial cleanup

solvents. The rules also apply to Pointe Coupee Parish and Calcasieu

Parish, formerly serious and marginal ozone nonattainment areas,

respectively. These rules were published in the Louisiana Register on

April 20, September 20, and November 20, 1995.

No action is being taken on the industrial wastewater portion of

the December 15, 1995, submittal. The EPA has identified provisions

which are deficient with respect to EPA guidance. In short, the EPA has

concerns with the rule provisions which are followed to determine the

characteristics of the wastewater stream, and the testing requirements

for biological treatment units.

The EPA has previously approved Louisiana's RACT rule for VOL tank

storage, 33 Louisiana Administrative Code (LAC) 2103, on October 22,

1996 (61 FR 57470) as part of the 15% rate of progress plan submitted

to the EPA on December 15, 1995.

III. Analysis of State Submittal

A. Industrial Cleaning Solvents

Chapter 21 of 33 LAC has been amended to include Section 2157, (33

LAC 2157) Limiting Volatile Organic Compound Emissions from Cleanup

Solvent Processing. Section 2157 is intended to incorporate regulations

which represent RACT for the cleanup solvents CTG-source category.

Facilities affected are those which emit or have the potential to

emit 50 tons per year or more of VOCs, and which use solvents in one or

more of the following nine solvent-cleaning operations: spray gun

cleaning, spray booth cleaning, large manufactured components cleaning,

equipment cleaning, floor cleaning, line cleaning, parts cleaning, tank

cleaning, and small manufactured components cleaning. Geographically,

these rules apply to the five parish Baton Rouge ozone nonattainment

area, and Pointe Coupee and Calcasieu Parishes.

To assist State agencies in developing rules to limit emission of

VOCs which result from industrial cleaning with organic solvents, in

February 1994, the EPA published the ACT document titled Industrial

Cleaning Solvents (EPA-453/R-94-015). The ACT document does not provide

a model regulation or a recommended emission limit representing RACT.

The ACT document does provide considerable information on feasible RACT

options which States can use to define their own RACT levels.

The ACT document recommends the application of an accounting system

which tracks the use, fate, and associated costs (purchase and

disposal) of the cleanup solvents. The accounting system should utilize

the Unit Operations System (UOS) approach. A UOS is defined as the

ensemble of equipment around which a material balance is performed and

includes all possible points/sources from which losses to the

atmosphere could occur as a result of them being cleaned. Completion of

the material balance around a UOS requires measurement of all input and

output VOC-based liquid solvent streams. The difference between these

streams may be assumed to have evaporated as solvent emissions. The UOS

ensembles for the nine solvent-operations listed above are described in

Appendix C of the ACT document.

Another control option discussed in the ACT document is to require

major sources to conduct intensive, short-term studies of solvent types

and uses. The study would review purchase records, distribution

sources, cleanup operations, recycling records and waste disposal

records. The study would identify potential VOC usage reductions such

as cleaning solvent changes and equipment changes.

Utilizing the information gained from the implementation of the UOS

accounting system, the ACT document recommends the State require major

sources to submit individual solvent reduction plans.

Section 2157 of 33 LAC incorporates, as requirements, the control

options outlined in the above listed ACT document. The regulation is

approvable as RACT for the cleanup solvents CTG-source category.

Section 2157 of 33 LAC, requires affected facilities to implement

the following actions: conduct a three-month intensive study of solvent

types and usage, utilize accounting on a unit operation system and,

submit plans to the administrative authority to reduce VOC emissions.

As an alternative to submitting reduction plans, the owner or operator

of affected facilities may report the controls and/or work practices

deemed to be Maximum Achievable Control Technology.

These submitted plans become State enforceable upon approval. A

violation of 33 LAC 2157 occurs if the affected facility does not meet

the state-approved solvent reduction target.

B. Batch Processes

1. EPA Analysis

Chapter 21 of 33 LAC has been amended to include Section 2149, (33

LAC 2149) Limiting Volatile Organic Compound Emissions from Batch

Processing. Section 2149 is intended to incorporate regulations which

represent

[[Page 63660]]

RACT for the batch processing CTG-source category.

Facilities affected are those which emit or have the potential to

emit 50 tons per year or more of VOCs, and fall into one of the

following Standard Industrial Classification code categories: plastic

materials and resins (2821), pharmaceuticals (2833 and 2834), gum and

wood chemicals (2861), cyclic crudes and intermediates (2865),

industrial organic chemicals (2869), and agricultural chemicals (2879).

Geographically, these rules apply to the five parish Baton Rouge ozone

nonattainment area, and Pointe Coupee and Calcasieu Parishes.

To assist State agencies in developing rules to limit emission of

VOCs which result from batch processes, in February 1994, the EPA

published the ACT document titled Control of Volatile Organic Compound

Emissions from Batch Processes (EPA-453/R-93-017). The ACT document

provides a model regulation representing RACT, as well as providing

considerable information on emissions, controls, control options, and

costs that States can use in developing RACT regulations.

In developing a batch processing RACT regulation, the State of

Louisiana closely followed the model rule provided in the ACT. The

purpose of most of the changes from the model rule is to make the

regulations more explicit. All changes are insignificant except the

change to single-unit operation exemptions as discussed below.

As a change to the model rule's single unit operation exemptions,

the State replaced the 500-pound annual emission exemption with the

following annual emission exemptions for specific unit operations: 1800

lbs. for reactors, 1200 lbs. for holding tanks, and 8700 lbs. for

centrifuges. No justification for the revised levels of these

thresholds was provided. Furthermore, by deleting the general single

unit operation exemption and including only three specific unit

operation exemptions, all other unit operations not listed would not be

exempt for analyses no matter how low the level of annual emissions.

2. State Commitment of Revision

On June 17, 1997, the LDEQ submitted a letter committing to revise,

within one year of the date of the publication of this Federal Register

conditional approval, the single unit operation exemptions of the batch

processing rule.

The revision would eliminate the individual process single unit

operation exemptions and set the overall single unit operation

exemption to 500 lb./yr. or less. The revision would also incorporate

language which more explicitly defines the control requirements.

3. EPA Conclusion

With the exception of the single unit operation exemption as

discussed above, 33 LAC 2149, incorporates as requirements, the control

options outlined in the above listed ACT document. With the letter

committing to revise Section 2149(b)(2), single unit operation

exemptions, the regulation is conditionally approvable as RACT for the

batch processing CTG source category.

C. SOCMI Distillation and Reactors

Chapter 21 of 33 LAC, has been amended to include Section 2147, (33

LAC 2147) Limiting Volatile Organic Compound Emissions from Reactor

Processes and Distillation Operations in the Synthetic Organic Chemical

Manufacturing Industry. Section 2147 is intended to incorporate

regulations which represent RACT for both the SOCMI reactors and SOCMI

distillation source categories.

Facilities affected are those which emit or have the potential to

emit 50 tons per year or more of VOCs, and have the Standard Industrial

Major Code 28 classification, Chemicals And Allied Products.

Geographically, these rules apply to the five parish Baton Rouge ozone

nonattainment area, and Pointe Coupee and Calcasieu Parishes.

To assist State agencies in developing rules to limit emission of

VOCs which result from batch processes, in August 1993 the EPA

published the CTG document entitled Control of Volatile Organic

Compound Emissions from Reactor Processes and Distillation Operations

Processes in the Synthetic Organic Chemical Manufacturing Industry. As

well as providing considerable information on emissions, controls, and

costs that the States can use in developing RACT regulations, the CTG

provides a model regulation representing RACT. In developing a SOCMI

distillation and reactor regulation, the State of Louisiana closely

followed the model rule provided in the CTG. The purpose of most of the

changes from the model rule is to make the regulations more explicit.

All changes are unsubstantive except the change made to the flow rate

exemption as discussed below.

As a change to the model rule flow-rate exemption, the State raised

the minimum control flow rate from 0.0085 to 0.011 standard cubic

meters per minute. This change was made to the model rule to be

consistent with the new source performance standards for reactor

processes, 40 CFR 60.700(c)(4). In this way, the RACT rule will not be

more stringent than the performance standards for new sources for

reactor processes. The EPA finds this revision acceptable.

Section 2149 of 33 LAC incorporates as requirements, the control

options outlined in the above listed CTG document. The regulation is

approvable as RACT for the SOCMI reactor and SOCMI distillation source

categories.

IV. Final Action

By this action, the EPA is conditionally approving in part and

fully approving in part the revisions to the Louisiana SIP submitted on

December 15, 1995. The EPA is conditionally approving the revisions to

the SIP to control VOC emissions utilizing RACT from the SOCMI batch

processing source category. The EPA is fully approving in the revisions

to the SIP to control VOC emissions utilizing RACT from the following

major source categories: SOCMI distillation, SOCMI reactor, and clean-

up solvents. The EPA is also approving the letter of negative

declaration for the wood furniture major source category from the LDEQ

dated January 21, 1997.

The full approval of the revision to control VOC emissions

utilizing RACT from the batch processing source category is contingent

upon the State of Louisiana submitting a revision to the single unit

operation exemptions rule. If the State fails to submit a revision to

the batch processing rule within one year of the conditional approval

of these SIP revisions, the conditional approval will convert to a

disapproval.

With the approval of these rules, the applicable requirements

relating to RACT rules of the 12 of the 13 CTG source categories have

been met. The industrial wastewater source category is the only

remaining CTG source category for which no action has been taken. This

source category will be handled in a separate rulemaking action.

The EPA is publishing this action without prior proposal because

the Agency views this as a noncontroversial amendment and anticipates

no adverse comments. However, in a separate document in this Federal

Register publication, EPA is proposing to approve the SIP revision

should adverse or critical comments be filed. This action will be

effective on February 2, 1998, unless, by January 2, 1998, adverse or

critical comments are received.

If EPA receives such comments, this action will be withdrawn before

the effective date by publishing a subsequent action that will withdraw

[[Page 63661]]

the final action. All public comments received will be addressed in a

subsequent final rule based the proposed rule in today's Federal

Register, which incorporate by reference the discussion in this direct

final action. The EPA will not institute a second comment period on

this action. Any parties interested in commenting on this action should

do so at this time. If no such comments are received, the public is

advised that this action will be effective February 2, 1998.

Nothing in this action should be construed as permitting or

allowing or establishing a precedent for any future request for

revision to any SIP. Each request for revision to the SIP shall be

considered separately in light of specific technical, economic, and

environmental factors and in relation to relevant statutory and

regulatory requirements.

V. Administrative Requirements

A. Executive Order (E.O.) 12866

The Office of Management and Budget (OMB) has exempted this

regulatory action from E.O. 12866 review.

B. Regulatory Flexibility Act

Under the Regulatory Flexibility Act, 5 U.S.C. 600 et seq., EPA

must prepare a regulatory flexibility analysis assessing the impact of

any proposed or final rule on small entities. See 5 U.S.C. 603 and 604.

Alternatively, EPA may certify that the rule will not have a

significant impact on a substantial number of small entities. Small

entities include small businesses, small not-for-profit enterprises,

and government entities with jurisdiction over populations of less than

50,000.

The SIP approvals under section 110 and subchapter I, part D of the

Act do not create any new requirements but simply approve requirements

that the State is already imposing. Therefore, because the Federal SIP

approval does not impose any new requirements, I certify that it does

not have a significant impact on any small entities affected. Moreover,

due to the nature of the Federal-State relationship under the Act,

preparation of a flexibility analysis would constitute Federal inquiry

into the economic reasonableness of State action. The Act forbids EPA

to base its actions concerning SIPs on such grounds. See Union Electric

Co. v. U.S. EPA, 427 U.S. 246, 255-66 (1976); 42 U.S.C. 7410(a)(2).

Conditional approvals of SIP submittals under section 110 and

subchapter I, part D of the Act do not create any new requirements but

simply approve requirements that the State is already imposing.

Therefore, because the Federal SIP approval does not impose any new

requirements, I certify that it does not have a significant impact on

any small entities affected. Moreover, due to the nature of the

Federal-State relationship under the Act, preparation of a flexibility

analysis would constitute Federal inquiry into the economic

reasonableness of State action. The Act forbids EPA to base its actions

concerning SIPs on such grounds. See Union Electric Co. v. U.S. EPA,

427 U.S. 246, 255-66 (1976); 42 U.S.C. 7410(a)(2).

If the conditional approval is converted to a disapproval under

section 110(k), based on the State's failure to meet the commitment, it

will not affect any existing State requirements applicable to small

entities. Federal disapproval of the State submittal does not affect

its State-enforceability. Moreover, EPA's disapproval of the submittal

does not impose a new Federal requirement. Therefore, EPA certifies

that this disapproval action does not have a significant impact on a

substantial number of small entities because it does not remove

existing requirements nor does it substitute a new Federal requirement.

C. Unfunded Mandates

Under section 202 of the Unfunded Mandates Reform Act of 1995,

signed into law on March 22, 1995, EPA must prepare a budgetary impact

statement to accompany any proposed or final rule that includes a

Federal mandate that may result in estimated costs to State, local, or

Tribal governments in the aggregate; or to private sector, of $100

million or more. Under section 205, EPA must select the most cost-

effective and least burdensome alternative that achieves the objectives

of the rule and is consistent with statutory requirements. Section 203

requires EPA to establish a plan for informing and advising any small

governments that may be significantly or uniquely impacted by the rule.

The EPA has determined that the approval action promulgated does

not include a Federal mandate that may result in estimated costs of

$100 million or more to either State, local, or Tribal governments in

the aggregate, or to the private sector. This Federal action approves

preexisting requirements under State or local law, and imposes no new

requirements. Accordingly, no additional costs to State, local, or

Tribal governments, or to the private sector, result from this action.

D. Submission to Congress and the General Accounting Office

Under 5 U.S.C. 801(a)(1)(A) as added by the Small Business

Regulatory Enforcement Fairness Act of 1996, EPA submitted a report

containing this rule and other required information to the U.S. Senate,

the U.S. House of Representatives and the Comptroller General of the

General Accounting Office prior to publication of this rule in today's

Federal Register.

This rule is not a ``major rule'' as defined by 5 U.S.C. 804(2).

E. Petitions for Judicial Review

Under section 307(b)(1) of the Act, petitions for judicial review

of this action must be filed in the United States Court of Appeals for

the appropriate circuit by February 2, 1998. Filing a petition for

reconsideration by the Administrator of this final rule does not affect

the finality of this rule for the purposes of judicial review nor does

it extend the time within which a petition for judicial review may be

filed, and shall not postpone the effectiveness of such rule or action.

This action may not be challenged later in proceedings to enforce its

requirements. See section 307(b)(2).

List of Subjects in 40 CFR Part 52

Environmental protection, Air pollution control, Hydrocarbons,

Incorporation by reference, Ozone, Reporting and recordkeeping

requirements, Volatile organic compounds.

Note: Incorporation by reference of the SIP for the State of

Louisiana was approved by the Director of the Federal Register on

July 1, 1982.

Dated: November 10, 1997.

Lynda F. Carroll,

Acting Regional Administrator.

Part 52, chapter I, title 40 of the Code of Federal Regulations is

amended as follows:

PART 52--[AMENDED]

1. The authority citation of part 52 continues to read as follows:

Authority: 42 U.S.C. 7401-7671q.

Subpart T--Louisiana

2. Section 52.970 is amended by adding paragraph (c)(74) to read as

follows:

Sec. 52.970 Identification of plan.

* * * * *

(c) * * *

(74) Revisions to the Louisiana Department of Environmental Quality

Regulation Title 33, Part III, Chapter 21,

[[Page 63662]]

Control of Emission of Organic Compounds, submitted by the Governor on

December 15, 1995.

(i) Incorporation by reference.

(A) LAC, Title 33, Part III, Chapter 21, Section 2147, Limiting

Volatile Organic Compound Emissions from Reactor Processes and

Distillation Operations in the Synthetic Organic Chemical Manufacturing

Industry, adopted in the Louisiana Register on April 20, 1995 (LR

21:380).

(B) LAC, Title 33, Part III, Chapter 21, Section 2149, Limiting

Volatile Organic Compound Emissions from Batch Processing, adopted in

the Louisiana Register on April 20, 1995 (LR 21:387).

(C) LAC, Title 33, Part III, Chapter 21, Section 2151, Limiting

Volatile Organic Compound Emissions from Cleanup Solvent Processing,

adopted in the Louisiana Register on April 20, 1995 (LR 21:391).

(ii) Additional material.

(A) Letter of negative declaration for wood furniture dated January

21, 1997, from the State of Louisiana Department of Environmental

Quality.

3. Section 52.994 is amended by designating the existing text as

paragraph (a) and adding paragraph (b) to read as follows:

Sec. 52.994 Conditional approvals.

* * * * *

(b) Reasonable Available Control Technology for the Synthetic

Organic Chemical Manufacturing Industry Batch Processing Source

Category. A letter dated June 17, 1997 from the Assistant Secretary of

the Louisiana Department of Environmental Quality to the EPA Regional

Administrator commits the State to make corrections in LAC

33.III.2149.A.2.b to restore the general single unit operation

exemption to 500 pounds per year or less. The State commits to make the

above rule change within one year from the Federal Register publication

of the conditional approval of the batch processing Reasonable

Available Control Technology rule.

[FR Doc. 97-31408 Filed 12-1-97; 8:45 am]

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