INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

We Protect Hoosiers and Our Environment. 

Mitchell E. Daniels Jr. 100 North Senate Avenue 

Governor Indianapolis, Indiana 46204 

(317) 232-8603 

Thomas W. Easterly Toll Free (800) 451-6027 

Commissioner www.idem.IN.gov 

 Recycled Paper An Equal Opportunity Employer Please Recycle 

TO: Interested Parties / Applicant 

DATE: September 30, 2008

RE: McDowell Enterprises, Inc. / 039-26362-00413 

FROM: Matthew Stuckey, Branch Chief 

 Permits Branch 

 Office of Air Quality 

Notice of Decision: Approval - Effective Immediately 

Please be advised that on behalf of the Commissioner of the Department of Environmental Management, 

I have issued a decision regarding the enclosed matter. Pursuant to IC 13-15-5-3, this permit is effective 

immediately, unless a petition for stay of effectiveness is filed and granted according to IC 13-15-6-3, and 

may be revoked or modified in accordance with the provisions of IC 13-15-7-1.

If you wish to challenge this decision, IC 4-21.5-3 and IC 13-15-6-1 require that you file a petition for 

administrative review. This petition may include a request for stay of effectiveness and must be submitted 

to the Office of Environmental Adjudication, 100 North Senate Avenue, Government Center North, Suite 

N 501E, Indianapolis, IN 46204, within eighteen (18) calendar days of the mailing of this notice. The 

filing of a petition for administrative review is complete on the earliest of the following dates that apply to 

the filing: 

(1) the date the document is delivered to the Office of Environmental Adjudication (OEA); 

(2) the date of the postmark on the envelope containing the document, if the document is mailed to 

OEA by U.S. mail; or 

(3) The date on which the document is deposited with a private carrier, as shown by receipt issued 

by the carrier, if the document is sent to the OEA by private carrier. 

The petition must include facts demonstrating that you are either the applicant, a person aggrieved or 

adversely affected by the decision or otherwise entitled to review by law. Please identify the permit, 

decision, or other order for which you seek review by permit number, name of the applicant, location, date 

of this notice and all of the following: 

(1) the name and address of the person making the request; 

(2) the interest of the person making the request; 

(3) identification of any persons represented by the person making the request; 

(4) the reasons, with particularity, for the request; 

(5) the issues, with particularity, proposed for considerations at any hearing; and 

(6) identification of the terms and conditions which, in the judgment of the person making the 

request, would be appropriate in the case in question to satisfy the requirements of the law 

governing documents of the type issued by the Commissioner. 

If you have technical questions regarding the enclosed documents, please contact the Office of Air 

Quality, Permits Branch at (317) 233-0178. Callers from within Indiana may call toll-free at 1-800-451-

6027, ext. 3-0178. 

Enclosures 

FNPER.dot12/03/07
INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

We Protect Hoosiers and Our Environment. 

Mitchell E. Daniels Jr. 100 North Senate Avenue

Governor Indianapolis, Indiana 46204

(317) 232-8603

Thomas W. Easterly Toll Free (800) 451-6027

Commissioner www.idem.IN.gov

 Recycled Paper An Equal Opportunity Employer Please Recycle 

 Minor Source Operating Permit Renewal 

OFFICE OF AIR QUALITY 

 McDowell Enterprises, Inc. 

2010 Superior Street 

Elkhart, Indiana 46515 

(herein known as the Permittee) is hereby authorized to operate subject to the conditions contained 

herein, the source described in Section A (Source Summary) of this permit. 

This permit is issued to the above mentioned company under the provisions of 326 IAC 2-1.1, 

326 IAC 2-6.1 and 40 CFR 52.780, with conditions listed on the attached pages. 

Indiana statutes from IC 13 and rules from 326 IAC, quoted in conditions in this permit, are those 

applicable at the time the permit was issued. The issuance or possession of this permit shall not alone 

constitute a defense against an alleged violation of any law, regulation or standard, except for the 

requirement to obtain a MSOP under 326 IAC 2-6.1.

Operation Permit No.: M039-26362-00413 

Issued by: Original signed by 

Iryn Calilung, Section Chief 

Permits Branch 

Office of Air Quality 

Issuance Date:September 30, 2008 

Expiration Date:September 30, 2018 
McDowell Enterprises, Inc. Page 2 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

TABLE OF CONTENTS 

A. SOURCE SUMMARY...............................................................................................................................4

A.1 General Information [326 IAC 2-5.1-3(c)][326 IAC 2-6.1-4(a)]

A.2 Emission Units and Pollution Control Equipment Summary

B. GENERAL CONDITIONS ........................................................................................................................6

B.1 Definitions [326 IAC 2-1.1-1]

B.2 Permit Term [326 IAC 2-6.1-7(a)][326 IAC 2-1.1-9.5][IC 13-15-3-6(a)]

B.3 Term of Conditions [326 IAC 2-1.1-9.5]

B.4 Enforceability

B.5 Severability

B.6 Property Rights or Exclusive Privilege

B.7 Duty to Provide Information

B.8 Certification

B.9 Annual Notification [326 IAC 2-6.1-5(a)(5)]

B.10 Preventive Maintenance Plan [326 IAC 1-6-3]

B.11 Prior Permits Superseded [326 IAC 2-1.1-9.5]

B.12 Termination of Right to Operate [326 IAC 2-6.1-7(a)]

B.13 Permit Renewal [326 IAC 2-6.1-7]

B.14 Permit Amendment or Revision [326 IAC 2-5.1-3(e)(3)][326 IAC 2-6.1-6]

B.15 Source Modification Requirement

B.16 Inspection and Entry [326 IAC 2-5.1-3(e)(4)(B)][326 IAC 2-6.1-5(a)(4)][IC 13-14-2-2] 

 [IC 13-17-3-2][IC 13-30-3-1]

B.17 Transfer of Ownership or Operational Control [326 IAC 2-6.1-6]

B.18 Annual Fee Payment [326 IAC 2-1.1-7]

B.19 Credible Evidence [326 IAC 1-1-6]

C. SOURCE OPERATION CONDITIONS..................................................................................................11

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)]

C.1 Particulate Emission Limitations For Processes with Process Weight Rates 

 Less Than One Hundred (100) Pounds per Hour [326 IAC 6-3-2]

C.2 Permit Revocation [326 IAC 2-1.1-9]

C.3 Opacity [326 IAC 5-1]

C.4 Open Burning [326 IAC 4-1] [IC 13-17-9]

C.5 Incineration [326 IAC 4-2] [326 IAC 9-1-2]

C.6 Fugitive Dust Emissions [326 IAC 6-4]

C.7 Asbestos Abatement Projects [326 IAC 14-10] [326 IAC 18] [40 CFR 61, Subpart M]

Testing Requirements [326 IAC 2-6.1-5(a)(2)]

C.8 Performance Testing [326 IAC 3-6]

Compliance Requirements [326 IAC 2-1.1-11]

C.9 Compliance Requirements [326 IAC 2-1.1-11]

Compliance Monitoring Requirements [326 IAC 2-6.1-5(a)(2)]

C.10 Compliance Monitoring [326 IAC 2-1.1-11]

C.11 Maintenance of Continuous Emission Monitoring Equipment 

 [326 IAC 2-7-5(3)(A)(iii)]

C.12 Monitoring Methods [326 IAC 3] [40 CFR 60] [40 CFR 63]

C.13 Instrument Specifications [326 IAC 2-1.1-11]

Corrective Actions and Response Steps
McDowell Enterprises, Inc. Page 3 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

C.14 Response to Excursions or Exceedances

C.15 Actions Related to Noncompliance Demonstrated by a Stack Test

Record Keeping and Reporting Requirements [326 IAC 2-6.1-5(a)(2)]

C.16 Malfunctions Report [326 IAC 1-6-2]

C.17 General Record Keeping Requirements [326 IAC 2-6.1-5]

C.18 General Reporting Requirements [326 IAC 2-1.1-11] [326 IAC 2-6.1-2] 

 [IC 13-14-1-13]

D.1. EMISSIONS UNIT OPERATION CONDITIONS.................................................................................18

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)]

D.1.1 General Provisions Relating to HAPs 

D.1.2 Chromium Emissions Limitation 

D.2. EMISSIONS UNIT OPERATION CONDITIONS.................................................................................20

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)]

D.2.1 General provisions Relating to HAPs 

D.2.2 Halogenated Solvent Cleaning 

D.2.3. Volatile Organic Compounds 

D.3. EMISSIONS UNIT OPERATION CONDITIONS.................................................................................22

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)]

Compliance Determination Requirements [326 IAC 2-1.1-11]

Compliance Monitoring Requirements [326 IAC 2-5.1-3(e)(2)][326 IAC 2-6.1-5(a)(2)]

Record Keeping and Reporting Requirements [326 IAC 2-5.1-3(e)(2)][326 IAC 2-6.1-5(a)(2)] 

Annual Notification

Malfunction Report

Attachment A - National Emission Standards for Chromium Emissions from Hard and Decorative 

 Chromium Electroplating and Chromium Anodizing Tanks (40 CFR 63, Subpart N) 

Attachment B - National Emission Standards for Halogenated Solvent Cleaning (40 CFR 63, 

 Subpart T) 
McDowell Enterprises, Inc. Page 4 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION A SOURCE SUMMARY 

This permit is based on information requested by the Indiana Department of Environmental Management 

(IDEM), Office of Air Quality (OAQ). The information describing the source contained in conditions A.1 

and A.2 is descriptive information and does not constitute enforceable conditions. However, the 

Permittee should be aware that a physical change or a change in the method of operation that may 

render this descriptive information obsolete or inaccurate may trigger requirements for the Permittee to 

obtain additional permits or seek modification of this permit pursuant to 326 IAC 2, or change other 

applicable requirements presented in the permit application. 

A.1 General Information [326 IAC 2-5.1-3(c)][326 IAC 2-6.1-4(a)] 

The Permittee owns and operates a stationary chromium electroplating. 

Source Address: 2010 Superior Street, Elkhart, Indiana 46515 

Mailing Address: 2010 Superior Street, Elkhart, Indiana 46515 

General Source Phone Number: (574) 293-1042 

SIC Code: 3471 

County Location: Elkhart 

Source Location Status: Attainment for all criteria pollutants 

Source Status: Minor Source Operating Permit Program 

 Minor Source, under PSD and Emission Offset Rules 

Minor Source, Section 112 of the Clean Air Act 

Not 1 of 28 Source Categories 

A.2 Emission Units and Pollution Control Equipment Summary 

This stationary source consists of the following emission units and pollution control devices:

(a) One (1) decorative chrome plating tank, identified as Tank 15N, constructed prior to 

December 16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 

2,000 amps and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, 

equipped with a composite mesh pad system as control, and exhausting to the south 

chromium stack. Tank 15N is considered an affected facility under 40 CFR 63, Subpart 

N. 

(b) One (1) hard chrome plating tank, identified as Tank 27N, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 750 amps 

and a maximum cumulative rectifier capacity of 4,410,000 amp hours, equipped with a 

composite mesh pad system as control, and exhausting to the south chromium stack. 

Tank 27N is considered an affected facility under 40 CFR 63, Subpart N. 

(c) One (1) hard chrome plating tank, identified as Tank 3WB, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 3,000 

amps and a maximum cumulative rectifier capacity of 17,640,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the south chromium 

stack. Tank 3WB is considered an affected facility under 40 CFR 63, Subpart N. 

(d) One (1) hard chrome plating tank, identified as Tank 2WB, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 

amps and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the south chromium 

stack. Tank 2WB is considered an affected facility under 40 CFR 63, Subpart N. 

. 

 
McDowell Enterprises, Inc. Page 5 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(e) One (1) hard chrome plating tank, identified as Tank 1NW, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 6,000 

amps and a maximum cumulative rectifier capacity of 35,280,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the north chromium 

stack. Tank 1NW is considered an affected facility under 40 CFR 63, Subpart N. 

. 

 (f) One (1) hard chrome plating tank, identified as Tank 2NE, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 8,000 

amps and a maximum cumulative rectifier capacity of 47,040,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the north chromium 

stack. Tank 2NE is considered an affected facility under 40 CFR 63, Subpart N. 

(g) One (1) hard chrome plating tank, identified as Tank 2N, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 4,000 

amps and a maximum cumulative rectifier capacity of 23,520,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the north chromium 

stack. Tank 2N is considered an affected facility under 40 CFR 63, Subpart N. 

(h) One (1) open top, batch vapor degreaser, constructed after 1980, capacity: 45.9 pounds 

of trichloroethylene per day. The open top, batch vapor degreaser is considered an 

affected facility under 40 CFR 63, Subpart T. 

(i) Three (3) natural gas fired heaters, identified as A16320GCB, A03818GCB and 

A03833GCB, capacity: 0.075 million British thermal units per hour, each. 

(j) Eleven (11) polishing and buffing units, equipped with a dust collector, rated at 7.4 X 10-8

grain per actual cubic foot, exhausting inside the building. 
McDowell Enterprises, Inc. Page 6 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION B GENERAL CONDITIONS

B.1 Definitions [326 IAC 2-1.1-1] 

Terms in this permit shall have the definition assigned to such terms in the referenced regulation. 

In the absence of definitions in the referenced regulation, the applicable definitions found in the 

statutes or regulations (IC 13-11, 326 IAC 1-2 and 326 IAC 2-1.1-1) shall prevail. 

B.2 Permit Term [326 IAC 2-6.1-7(a)][326 IAC 2-1.1-9.5][IC 13-15-3-6(a)] 

(a) This permit, M039-26362-00413, is issued for a fixed term of ten (10) years from the 

issuance date of this permit, as determined in accordance with IC 4-21.5-3-5(f) and 

IC 13-15-5-3. Subsequent revisions, modifications, or amendments of this permit do not 

affect the expiration date of this permit. 

(b) If IDEM, OAQ, upon receiving a timely and complete renewal permit application, fails to 

issue or deny the permit renewal prior to the expiration date of this permit, this existing 

permit shall not expire and all terms and conditions shall continue in effect, until the 

renewal permit has been issued or denied. 

B.3 Term of Conditions [326 IAC 2-1.1-9.5] 

Notwithstanding the permit term of a permit to construct, a permit to operate, or a permit 

modification, any condition established in a permit issued pursuant to a permitting program 

approved in the state implementation plan shall remain in effect until: 

(a) the condition is modified in a subsequent permit action pursuant to Title I of the Clean Air 

Act; or 

(b) the emission unit to which the condition pertains permanently ceases operation. 

B.4 Enforceability 

Unless otherwise stated, all terms and conditions in this permit, including any provisions designed 

to limit the source's potential to emit, are enforceable by IDEM, the United States Environmental 

Protection Agency (U.S. EPA) and by citizens in accordance with the Clean Air Act. 

B.5 Severability 

The provisions of this permit are severable; a determination that any portion of this permit is 

invalid shall not affect the validity of the remainder of the permit. 

B.6 Property Rights or Exclusive Privilege 

This permit does not convey any property rights of any sort or any exclusive privilege. 

B.7 Duty to Provide Information 

(a) The Permittee shall furnish to IDEM, OAQ, within a reasonable time, any information that 

IDEM, OAQ may request in writing to determine whether cause exists for modifying, 

revoking and reissuing, or terminating this permit, or to determine compliance with this 

permit. The submittal by the Permittee does require the certification by an "authorized 

individual" as defined by 326 IAC 2-1.1-1(1). Upon request, the Permittee shall also 

furnish to IDEM, OAQ copies of records required to be kept by this permit. 

(b) For information furnished by the Permittee to IDEM, OAQ, the Permittee may include a 

claim of confidentiality in accordance with 326 IAC 17.1. When furnishing copies of 

requested records directly to U. S. EPA, the Permittee may assert a claim of 

confidentiality in accordance with 40 CFR 2, Subpart B. 
McDowell Enterprises, Inc. Page 7 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

B.8 Certification 

(a) Where specifically designated by this permit or required by an applicable requirement, 

any application form, report, or compliance certification submitted shall contain 

certification by an "authorized individual" of truth, accuracy, and completeness. This 

certification shall state that, based on information and belief formed after reasonable 

inquiry, the statements and information in the document are true, accurate, and complete. 

(b) One (1) certification shall be included, using the attached Certification Form, with each 

submittal requiring certification. One (1) certification may cover multiple forms in one (1) 

submittal. 

(c) An "authorized individual" is defined at 326 IAC 2-1.1-1(1). 

B.9 Annual Notification [326 IAC 2-6.1-5(a)(5)] 

(a) An annual notification shall be submitted by an authorized individual to the Office of Air 

Quality stating whether or not the source is in operation and in compliance with the terms 

and conditions contained in this permit. 

(b) The annual notice shall be submitted in the format attached no later than March 1 of each 

year to: 

Indiana Department of Environmental Management 

Compliance Branch, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, IN 46204-2251 

(c) The notification shall be considered timely if the date postmarked on the envelope or 

certified mail receipt, or affixed by the shipper on the private shipping receipt, is on or 

before the date it is due. If the document is submitted by any other means, it shall be 

considered timely if received by IDEM, OAQ on or before the date it is due. 

B.10 Preventive Maintenance Plan [326 IAC 1-6-3] 

(a) If required by specific condition(s) in Section D of this permit, the Permittee shall maintain 

and implement Preventive Maintenance Plans (PMPs) including the following information 

on each facility: 

(1) Identification of the individual(s) responsible for inspecting, maintaining, and 

repairing emission control devices; 

(2) A description of the items or conditions that will be inspected and the inspection 

schedule for said items or conditions; and 

(3) Identification and quantification of the replacement parts that will be maintained 

in inventory for quick replacement. 

(b) A copy of the PMPs shall be submitted to IDEM, OAQ upon request and within a 

reasonable time, and shall be subject to review and approval by IDEM, OAQ. IDEM, 

OAQ may require the Permittee to revise its PMPs whenever lack of proper maintenance 

causes or is the primary contributor to an exceedance of any limitation on emissions or 

potential to emit. The PMPs do not require the certification by an "authorized individual" 

as defined by 326 IAC 2-1.1-1(1). 
McDowell Enterprises, Inc. Page 8 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(c) To the extent the Permittee is required by 40 CFR Part 60/63 to have an Operation 

Maintenance, and Monitoring (OMM) Plan for a unit, such Plan is deemed to satisfy the 

PMP requirements of 326 IAC 1-6-3 for that unit. 

B.11 Prior Permits Superseded [326 IAC 2-1.1-9.5] 

(a) All terms and conditions of permits established prior to M039-26362-00413 and issued 

pursuant to permitting programs approved into the state implementation plan have been 

either: 

(1) incorporated as originally stated, 

(2) revised, or 

(3) deleted. 

(b) All previous registrations and permits are superseded by this permit. 

B.12 Termination of Right to Operate [326 IAC 2-6.1-7(a)] 

The Permittee's right to operate this source terminates with the expiration of this permit unless a 

timely and complete renewal application is submitted at least ninety (90) days prior to the date of 

expiration of the source’s existing permit, consistent with 326 IAC 2-6.1-7. 

B.13 Permit Renewal [326 IAC 2-6.1-7] 

(a) The application for renewal shall be submitted using the application form or forms 

prescribed by IDEM, OAQ and shall include the information specified in 326 IAC 2-6.1-7. 

Such information shall be included in the application for each emission unit at this source. 

The renewal application does require the certification by an "authorized individual" as 

defined by 326 IAC 2-1.1-1(1). 

Request for renewal shall be submitted to: 

Indiana Department of Environmental Management 

Permits Branch, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, Indiana 46204-2251 

 

(b) A timely renewal application is one that is: 

(1) Submitted at least ninety (90) days prior to the date of the expiration of this 

permit; and 

(2) If the date postmarked on the envelope or certified mail receipt, or affixed by the 

shipper on the private shipping receipt, is on or before the date it is due. If the 

document is submitted by any other means, it shall be considered timely if 

received by IDEM, OAQ on or before the date it is due. 

(c) If the Permittee submits a timely and complete application for renewal of this permit, the 

source’s failure to have a permit is not a violation of 326 IAC 2-6.1 until IDEM, OAQ takes 

final action on the renewal application, except that this protection shall cease to apply if, 

subsequent to the completeness determination, the Permittee fails to submit by the 

deadline specified in writing by IDEM, OAQ any additional information identified as being 

needed to process the application. 
McDowell Enterprises, Inc. Page 9 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

B.14 Permit Amendment or Revision [326 IAC 2-5.1-3(e)(3)][326 IAC 2-6.1-6] 

(a) Permit amendments and revisions are governed by the requirements of 326 IAC 2-6.1-6 

whenever the Permittee seeks to amend or modify this permit. 

(b) Any application requesting an amendment or modification of this permit shall be 

submitted to: 

Indiana Department of Environmental Management 

Permits Branch, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, Indiana 46204-2251 

 

Any such application shall be certified by an "authorized individual" as defined by 

326 IAC 2-1.1-1(1). 

(c) The Permittee shall notify the OAQ within thirty (30) calendar days of implementing a 

notice-only change. [326 IAC 2-6.1-6(d)] 

B.15 Source Modification Requirement 

A modification, construction, or reconstruction is governed by the requirements of 326 IAC 2. 

B.16 Inspection and Entry 

[326 IAC 2-5.1-3(e)(4)(B)][326 IAC 2-6.1-5(a)(4)][IC 13-14-2-2][IC 13-17-3-2][IC 13-30-3-1] 

Upon presentation of proper identification cards, credentials, and other documents as may be 

required by law, and subject to the Permittee’s right under all applicable laws and regulations to 

assert that the information collected by the agency is confidential and entitled to be treated as 

such, the Permittee shall allow IDEM, OAQ, U.S. EPA, or an authorized representative to perform 

the following: 

(a) Enter upon the Permittee's premises where a permitted source is located, or emissions 

related activity is conducted, or where records must be kept under the conditions of this 

permit; 

(b) As authorized by the Clean Air Act, IC 13-14-2-2, IC 13-17-3-2, and IC 13-30-3-1, have 

access to and copy, at reasonable times, any records that must be kept under the 

conditions of this permit; 

(c) As authorized by the Clean Air Act, IC 13-14-2-2, IC 13-17-3-2, and IC 13-30-3-1, 

inspect, at reasonable times, any facilities, equipment (including monitoring and air 

pollution control equipment), practices, or operations regulated or required under this 

permit; 

(d) As authorized by the Clean Air Act, IC 13-14-2-2, IC 13-17-3-2, and IC 13-30-3-1, sample 

or monitor, at reasonable times, substances or parameters for the purpose of assuring 

compliance with this permit or applicable requirements; and 

(e) As authorized by the Clean Air Act, IC 13-14-2-2, IC 13-17-3-2, and IC 13-30-3-1, utilize 

any photographic, recording, testing, monitoring, or other equipment for the purpose of 

assuring compliance with this permit or applicable requirements. 

B.17 Transfer of Ownership or Operational Control [326 IAC 2-6.1-6] 

(a) The Permittee must comply with the requirements of 326 IAC 2-6.1-6 whenever the 

Permittee seeks to change the ownership or operational control of the source and no 

other change in the permit is necessary. 
McDowell Enterprises, Inc. Page 10 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(b) Any application requesting a change in the ownership or operational control of the source 

shall contain a written agreement containing a specific date for transfer of permit 

responsibility, coverage and liability between the current and new Permittee. The 

application shall be submitted to: 

Indiana Department of Environmental Management 

Permits Branch, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, Indiana 46204-2251 

 The application which shall be submitted by the Permittee does require the certification 

by an "authorized individual" as defined by 326 IAC 2-1.1-1(1). 

(c) The Permittee may implement notice-only changes addressed in the request for a noticeonly change immediately upon submittal of the request. [326 IAC 2-6.1-6(d)(3)] 

B.18 Annual Fee Payment [326 IAC 2-1.1-7] 

(a) The Permittee shall pay annual fees to IDEM, OAQ within thirty (30) calendar days of 

receipt of a billing. 

(b) The Permittee may call the following telephone numbers: 1-800-451-6027 or 

317-233-4230 (ask for OAQ, Billing, Licensing, and Training Section), to determine the 

appropriate permit fee. 

B.19 Credible Evidence [326 IAC 1-1-6] 

For the purpose of submitting compliance certifications or establishing whether or not the 

Permittee has violated or is in violation of any condition of this permit, nothing in this permit shall 

preclude the use, including the exclusive use, of any credible evidence or information relevant to 

whether the Permittee would have been in compliance with the condition of this permit if the 

appropriate performance or compliance test or procedure had been performed. 
McDowell Enterprises, Inc. Page 11 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION C SOURCE OPERATION CONDITIONS 

Entire Source 

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)] 

C.1 Particulate Emission Limitations For Processes with Process Weight Rates Less Than One 

Hundred (100) Pounds per Hour [326 IAC 6-3-2] 

Pursuant to 326 IAC 6-3-2(e)(2), particulate emissions from any process not exempt under 

326 IAC 6-3-1(b) or (c) which has a maximum process weight rate less than 100 pounds per hour 

and the methods in 326 IAC 6-3-2(b) through (d) do not apply shall not exceed 0.551 pounds per 

hour. 

C.2 Permit Revocation [326 IAC 2-1.1-9] 

Pursuant to 326 IAC 2-1.1-9 (Revocation of Permits), this permit to operate may be revoked for 

any of the following causes: 

(a) Violation of any conditions of this permit. 

(b) Failure to disclose all the relevant facts, or misrepresentation in obtaining this permit. 

(c) Changes in regulatory requirements that mandate either a temporary or permanent 

reduction of discharge of contaminants. However, the amendment of appropriate 

sections of this permit shall not require revocation of this permit. 

(d) Noncompliance with orders issued pursuant to 326 IAC 1-5 (Episode Alert Levels) to 

reduce emissions during an air pollution episode. 

(e) For any cause which establishes in the judgment of IDEM, the fact that continuance of 

this permit is not consistent with purposes of this article. 

C.3 Opacity [326 IAC 5-1] 

Pursuant to 326 IAC 5-1-2 (Opacity Limitations), except as provided in 326 IAC 5-1-3 (Temporary 

Alternative Opacity Limitations), opacity shall meet the following, unless otherwise stated in this 

permit: 

(a) Opacity shall not exceed an average of forty percent (40%) in any one (1) six (6) minute 

averaging period as determined in 326 IAC 5-1-4. 

(b) Opacity shall not exceed sixty percent (60%) for more than a cumulative total of fifteen 

(15) minutes (sixty (60) readings as measured according to 40 CFR 60, Appendix A, 

Method 9 or fifteen (15) one (1) minute nonoverlapping integrated averages for a 

continuous opacity monitor) in a six (6) hour period. 

C.4 Open Burning [326 IAC 4-1] [IC 13-17-9] 

The Permittee shall not open burn any material except as provided in 326 IAC 4-1-3, 

326 IAC 4-1-4 or 326 IAC 4-1-6. The previous sentence notwithstanding, the Permittee may 

open burn in accordance with an open burning approval issued by the Commissioner under 

326 IAC 4-1-4.1.

C.5 Incineration [326 IAC 4-2] [326 IAC 9-1-2] 

The Permittee shall not operate an incinerator or incinerate any waste or refuse except as 

provided in 326 IAC 4-2 and 326 IAC 9-1-2.
McDowell Enterprises, Inc. Page 12 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

C.6 Fugitive Dust Emissions [326 IAC 6-4] 

The Permittee shall not allow fugitive dust to escape beyond the property line or boundaries of 

the property, right-of-way, or easement on which the source is located, in a manner that would 

violate 326 IAC 6-4 (Fugitive Dust Emissions). 

C.7 Asbestos Abatement Projects [326 IAC 14-10] [326 IAC 18] [40 CFR 61, Subpart M] 

(a) Notification requirements apply to each owner or operator. If the combined amount of 

regulated asbestos containing material (RACM) to be stripped, removed or disturbed is at 

least 260 linear feet on pipes or 160 square feet on other facility components, or at least 

thirty-five (35) cubic feet on all facility components, then the notification requirements of 

326 IAC 14-10-3 are mandatory. All demolition projects require notification whether or 

not asbestos is present. 

(b) The Permittee shall ensure that a written notification is sent on a form provided by the 

Commissioner at least ten (10) working days before asbestos stripping or removal work 

or before demolition begins, per 326 IAC 14-10-3, and shall update such notice as 

necessary, including, but not limited to the following: 

(1) When the amount of affected asbestos containing material increases or 

decreases by at least twenty percent (20%); or 

(2) If there is a change in the following: 

(A) Asbestos removal or demolition start date; 

(B) Removal or demolition contractor; or 

(C) Waste disposal site. 

(c) The Permittee shall ensure that the notice is postmarked or delivered according to the 

guidelines set forth in 326 IAC 14-10-3(2). 

(d) The notice to be submitted shall include the information enumerated in 

326 IAC 14-10-3(3). 

All required notifications shall be submitted to: 

Indiana Department of Environmental Management 

Asbestos Section, Office of Air Quality 

100 North Senate Avenue 

MC 61-52 IGCN 1003 

Indianapolis, Indiana 46204-2251 

The notice shall include a signed certification from the owner or operator that the 

information provided in this notification is correct and that only Indiana licensed workers 

and project supervisors will be used to implement the asbestos removal project. The 

notifications do not require a certification by an "authorized individual" as defined by 

326 IAC 2-1.1-1(1). 

(e) Procedures for Asbestos Emission Control 

The Permittee shall comply with the applicable emission control procedures in 

326 IAC 14-10-4 and 40 CFR 61.145(c). Per 326 IAC 14-10-1, emission control 

requirements are applicable for any removal or disturbance of RACM greater than three 

(3) linear feet on pipes or three (3) square feet on any other facility components or a total 

of at least 0.75 cubic feet on all facility components. 
McDowell Enterprises, Inc. Page 13 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(f) Demolition and Renovation 

The Permittee shall thoroughly inspect the affected facility or part of the facility where the 

demolition or renovation will occur for the presence of asbestos pursuant to 

40 CFR 61.145(a). 

(g) Indiana Licensed Asbestos Inspector 

The Permittee shall comply with 326 IAC 14-10-1(a) that requires the owner or operator, 

prior to a renovation/demolition, to use an Indiana Licensed Asbestos Inspector to 

thoroughly inspect the affected portion of the facility for the presence of asbestos. The 

requirement to use an Indiana Licensed Asbestos inspector is not federally enforceable. 

 

Testing Requirements [326 IAC 2-6.1-5(a)(2)] 

C.8 Performance Testing [326 IAC 3-6] 

(a) All testing shall be performed according to the provisions of 326 IAC 3-6 (Source 

Sampling Procedures), except as provided elsewhere in this permit, utilizing any 

applicable procedures and analysis methods specified in 40 CFR 51, 40 CFR 60, 

40 CFR 61, 40 CFR 63, 40 CFR 75, or other procedures approved by IDEM, OAQ. 

A test protocol, except as provided elsewhere in this permit, shall be submitted to: 

Indiana Department of Environmental Management 

Compliance Data Section, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, Indiana 46204-2251 

no later than thirty-five (35) days prior to the intended test date. The protocol submitted 

by the Permittee does not require certification by an "authorized individual" as defined by 

326 IAC 2-1.1-1(1). 

(b) The Permittee shall notify IDEM, OAQ of the actual test date at least fourteen (14) days 

prior to the actual test date. The notification submitted by the Permittee does not require 

certification by an "authorized individual" as defined by 326 IAC 2-1.1-1(1). 

(c) Pursuant to 326 IAC 3-6-4(b), all test reports must be received by IDEM, OAQ not later 

than forty-five (45) days after the completion of the testing. An extension may be granted 

by IDEM, OAQ if the Permittee submits to IDEM, OAQ, a reasonable written explanation 

not later than five (5) days prior to the end of the initial forty-five (45) day period. 

Compliance Requirements [326 IAC 2-1.1-11] 

C.9 Compliance Requirements [326 IAC 2-1.1-11] 

The commissioner may require stack testing, monitoring, or reporting at any time to assure 

compliance with all applicable requirements by issuing an order under 326 IAC 2-1.1-11. Any 

monitoring or testing shall be performed in accordance with 326 IAC 3 or other methods approved 

by the commissioner or the U. S. EPA. 
McDowell Enterprises, Inc. Page 14 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

Compliance Monitoring Requirements [326 IAC 2-6.1-5(a)(2)] 

C.10 Compliance Monitoring [326 IAC 2-1.1-11] 

Compliance with applicable requirements shall be documented as required by this permit. The 

Permittee shall be responsible for installing any necessary equipment and initiating any required 

monitoring related to that equipment. All monitoring and record keeping requirements not already 

legally required shall be implemented when operation begins. 

C.11 Maintenance of Continuous Emission Monitoring Equipment [326 IAC 2-7-5(3)(A)(iii)] 

(a) The Permittee shall install, calibrate, maintain, and operate all necessary continuous 

emission monitoring systems (CEMS) and related equipment. 

(b) In the event that a breakdown of a continuous emission monitoring system occurs, a 

record shall be made of the times and reasons of the breakdown and efforts made to 

correct the problem. 

(c) Whenever a continuous emission monitor other than an opacity monitor is malfunctioning 

or will be down for calibration, maintenance, or repairs for a period of four (4) hours or 

more, a calibrated backup CEMS shall be brought online within four (4) hours of 

shutdown of the primary CEMS, and shall be operated until such time as the primary 

CEMS is back in operation. 

(d) Nothing in this permit shall excuse the Permittee from complying with the requirements to 

operate a continuous emission monitoring system pursuant to (cite rule or permit that 

requires the monitoring equipment to be installed/operated.)

C.12 Monitoring Methods [326 IAC 3] [40 CFR 60] [40 CFR 63] 

Any monitoring or testing required by Section D of this permit shall be performed according to the 

provisions of 326 IAC 3, 40 CFR 60, Appendix A, 40 CFR 60, Appendix B, 40 CFR 63, or other 

approved methods as specified in this permit. 

C.13 Instrument Specifications [326 IAC 2-1.1-11] 

(a) When required by any condition of this permit, an analog instrument used to measure a 

parameter related to the operation of an air pollution control device shall have a scale 

such that the expected maximum reading for the normal range shall be no less than 

twenty percent (20%) of full scale. 

(b) The Permittee may request that the IDEM, OAQ approve the use of an instrument that 

does not meet the above specifications provided the Permittee can demonstrate that an 

alternative instrument specification will adequately ensure compliance with permit 

conditions requiring the measurement of the parameters. 

Corrective Actions and Response Steps 

C.14 Response to Excursions or Exceedances

(a) Upon detecting an excursion or exceedance, the Permittee shall restore operation of the 

emissions unit (including any control device and associated capture system) to its normal 

or usual manner of operation as expeditiously as practicable in accordance with good air 

pollution control practices for minimizing emissions. 

(b) The response shall include minimizing the period of any startup, shutdown or malfunction 

and taking any necessary corrective actions to restore normal operation and prevent the 

likely recurrence of the cause of an excursion or exceedance (other than those caused by 

excused startup or shutdown conditions). Corrective actions may include, but are not 

limited to, the following: 
McDowell Enterprises, Inc. Page 15 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(1) initial inspection and evaluation; 

(2) recording that operations returned to normal without operator action (such as 

through response by a computerized distribution control system); or 

(3) any necessary follow-up actions to return operation to within the indicator range, 

designated condition, or below the applicable emission limitation or standard, as 

applicable. 

(c) A determination of whether the Permittee has used acceptable procedures in response to 

an excursion or exceedance will be based on information available, which may include, 

but is not limited to, the following: 

(1) monitoring results; 

(2) review of operation and maintenance procedures and records; and/or 

(3) inspection of the control device, associated capture system, and the process. 

(d) Failure to take reasonable response steps shall be considered a deviation from the 

permit. 

(e) The Permittee shall maintain the following records: 

(1) monitoring data; 

(2) monitor performance data, if applicable; and 

(3) corrective actions taken. 

C.15 Actions Related to Noncompliance Demonstrated by a Stack Test 

(a) When the results of a stack test performed in conformance with Section C - Performance 

Testing, of this permit exceed the level specified in any condition of this permit, the 

Permittee shall take appropriate response actions. The Permittee shall submit a 

description of these response actions to IDEM, OAQ, within thirty (30) days of receipt of 

the test results. The Permittee shall take appropriate action to minimize excess 

emissions from the affected facility while the response actions are being implemented. 

(b) A retest to demonstrate compliance shall be performed within one hundred twenty (120) 

days of receipt of the original test results. Should the Permittee demonstrate to IDEM, 

OAQ that retesting in one hundred twenty (120) days is not practicable, IDEM, OAQ may 

extend the retesting deadline. 

(c) IDEM, OAQ reserves the authority to take any actions allowed under law in response to 

noncompliant stack tests. 

The response action documents submitted pursuant to this condition do require the certification 

by an "authorized individual" as defined by 326 IAC 2-1.1-1(1). 

Record Keeping and Reporting Requirements [326 IAC 2-6.1-5(a)(2)] 

C.16 Malfunctions Report [326 IAC 1-6-2] 

Pursuant to 326 IAC 1-6-2 (Records; Notice of Malfunction): 
McDowell Enterprises, Inc. Page 16 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(a) A record of all malfunctions, including startups or shutdowns of any facility or emission 

control equipment, which result in violations of applicable air pollution control regulations 

or applicable emission limitations shall be kept and retained for a period of three (3) years 

and shall be made available to the Indiana Department of Environmental Management 

(IDEM), Office of Air Quality (OAQ) or appointed representative upon request. 

(b) When a malfunction of any facility or emission control equipment occurs which lasts more 

than one (1) hour, said condition shall be reported to OAQ, using the Malfunction Report 

Forms (2 pages). Notification shall be made by telephone or facsimile, as soon as 

practicable, but in no event later than four (4) daytime business hours after the beginning 

of said occurrence. 

(c) Failure to report a malfunction of any emission control equipment shall constitute a 

violation of 326 IAC 1-6, and any other applicable rules. Information of the scope and 

expected duration of the malfunction shall be provided, including the items specified in 

326 IAC 1-6-2(a)(1) through (6). 

(d) Malfunction is defined as any sudden, unavoidable failure of any air pollution control 

equipment, process, or combustion or process equipment to operate in a normal and 

usual manner. [326 IAC 1-2-39] 

C.17 General Record Keeping Requirements [326 IAC 2-6.1-5] 

(a) Records of all required monitoring data, reports and support information required by this 

permit shall be retained for a period of at least five (5) years from the date of monitoring 

sample, measurement, report, or application. These records shall be physically present 

or electronically accessible at the source location for a minimum of three (3) years. The 

records may be stored elsewhere for the remaining two (2) years as long as they are 

available upon request. If the Commissioner makes a request for records to the 

Permittee, the Permittee shall furnish the records to the Commissioner within a 

reasonable time. 

(b) Unless otherwise specified in this permit, all record keeping requirements not already 

legally required shall be implemented within ninety (90) days of permit issuance. 

C.18 General Reporting Requirements [326 IAC 2-1.1-11] [326 IAC 2-6.1-2] [IC 13-14-1-13] 

(a) Reports required by conditions in Section D of this permit shall be submitted to: 

Indiana Department of Environmental Management 

Compliance Data Section, Office of Air Quality 

100 North Senate Avenue 

MC 61-53 IGCN 1003 

Indianapolis, Indiana 46204-2251 

 (b) Unless otherwise specified in this permit, any notice, report, or other submission required 

by this permit shall be considered timely if the date postmarked on the envelope or 

certified mail receipt, or affixed by the shipper on the private shipping receipt, is on or 

before the date it is due. If the document is submitted by any other means, it shall be 

considered timely if received by IDEM, OAQ on or before the date it is due. 

(c) Unless otherwise specified in this permit, all reports required in Section D of this permit 

shall be submitted within thirty (30) days of the end of the reporting period. All reports do 

require the certification by an "authorized individual" as defined by 326 IAC 2-1.1-1(1). 
McDowell Enterprises, Inc. Page 17 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(d) Reporting periods are based on calendar years, unless otherwise specified in this permit. 

For the purpose of this permit “calendar year” means the twelve (12) month period from 

January 1 to December 31 inclusive. 
McDowell Enterprises, Inc. Page 18 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION D.1 EMISSIONS UNIT OPERATION CONDITIONS 

Emissions Unit Description: Chromium Electroplating 

(a) One (1) decorative chrome plating tank, identified as Tank 15N, constructed prior to 

December 16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 

2,000 amps and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped 

with a composite mesh pad system as control, and exhausting to the south chromium stack. 

Tank 15N is considered an affected facility under 40 CFR 63, Subpart N. 

(b) One (1) hard chrome plating tank, identified as Tank 27N, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 750 amps and a 

maximum cumulative rectifier capacity of 4,410,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the south chromium stack. Tank 27N is 

considered an affected facility under 40 CFR 63, Subpart N. 

(c) One (1) hard chrome plating tank, identified as Tank 3WB, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 3,000 amps and a 

maximum cumulative rectifier capacity of 17,640,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the south chromium stack. Tank 3WB is 

considered an affected facility under 40 CFR 63, Subpart N. 

(d) One (1) hard chrome plating tank, identified as Tank 2WB, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 amps and a 

maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the south chromium stack. Tank 2WB is 

considered an affected facility under 40 CFR 63, Subpart N. 

(e) One (1) hard chrome plating tank, identified as Tank 1NW, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 6,000 amps and a 

maximum cumulative rectifier capacity of 35,280,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the north chromium stack. Tank 1NW is 

considered an affected facility under 40 CFR 63, Subpart N. 

(f) One (1) hard chrome plating tank, identified as Tank 2NE, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 8,000 amps and a 

maximum cumulative rectifier capacity of 47,040,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the north chromium stack. Tank 2NE is 

considered an affected facility under 40 CFR 63, Subpart N. 

(g) One (1) hard chrome plating tank, identified as Tank 2N, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 4,000 amps and a 

maximum cumulative rectifier capacity of 23,520,000 amp-hours, equipped with a composite 

mesh pad system as control, and exhausting to the north chromium stack. Tank 2N is 

considered an affected facility under 40 CFR 63, Subpart N. 

(The information describing the process contained in this emissions unit description box is descriptive 

information and does not constitute enforceable conditions.) 
McDowell Enterprises, Inc. Page 19 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

Emission Limitations and Standards [326 IAC 2-6.1-5(a)(1)] 

D.1.1 General Provisions Relating to HAPs [40 CFR Part 63, Subpart A] 

The provisions of 40 CFR Part 63, Subpart A - General Provisions, which are incorporated by 

reference as 326 IAC 20-1-1, apply to the facility described in this section except when otherwise 

specified in 40 CFR Part 63, Subpart N. The Permittee shall comply with the requirements of this 

condition on and after the compliance date for the tanks. 

D.1.2 Chromium Electroplating and Anodizing NESHAP [40 CFR Part 63, Subpart N] 

 This source is subject to the National Emission Standards for Hazardous Air Pollutants for 

Chromium Emissions from Hard and Decorative Chromium Electroplating and Chromium 

Anodizing Tanks (40 CFR 63, Subpart N), which is incorporated by reference as 326 IAC 20-8-1. 

 The existing affected source associated with the Chromium Emissions from Hard and Decorative 

 Chromium Electroplating and Chromium Anodizing Tanks is subject to the following 

 portions of 40 CFR 63, Subpart N: 

 (1) 40 CFR 63.341 

 (2) 40 CFR 63.342 

 (3) 40 CFR 63.342, Table 1 

 (4) 40 CFR 63.343(c)(1) 

 (5) 40 CFR 63.344 

 (6) 40 CFR 63.346 

 (7) 40 CFR 63.347 

 (8) 40 CFR 63.348 
McDowell Enterprises, Inc. Page 20 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION D.2 EMISSIONS UNIT OPERATION CONDITIONS

Emissions Unit Description: Degreaser 

(h) One (1) open top, batch vapor degreaser, constructed after 1980, capacity: 45.9 pounds of 

trichloroethylene per day. The open top, batch vapor degreaser is considered an affected 

facility under 40 CFR 63, Subpart T. 

(The information describing the process contained in this emissions unit description box is descriptive 

information and does not constitute enforceable conditions.) 

Emission Limitations and Standards [326 IAC 2-6.1-5(1)] 

D.2.1 General Provisions Relating to HAPs [40 CFR Part 63, Subpart A] 

The provisions of 40 CFR Part 63, Subpart A - General Provisions, which are incorporated as 

326 IAC 20-1-1, apply to the facility described in this section except when otherwise specified in 

40 CFR Part 63, Subpart T. 

D.2.2 Halogenated Solvent Cleaning Machine NESHAP [40 CFR Part 63.463] 

 This source is subject to the National Emission Standards for Hazardous Air Pollutants for 

Halogenated Solvent Cleaning (40 CFR 63, Subpart T), which is incorporated by reference as 

326 IAC 20-6-1. 

 The existing affected source associated with the Halogenated Solvent Cleaning is subject to the 

 following portions of 40 CFR 63, Subpart T: 

 (1) 40 CFR 63.460 

 (2) 40 CFR 63.461 

 (3) 40 CFR 63.463 

 (4) 40 CFR 63.464 

 (5) 40 CFR 63.465 

 (6) 40 CFR 63.466 

 (7) 40 CFR 63.467 

 (8) 40 CFR 63.468 

 (9) 40 CFR 63.469 

 (10) 40 CFR 63.470 

 (11) 40 CFR 63.471 

 

D.2.3 Volatile Organic Compounds (VOC) [326 IAC 8-3-3] 

Pursuant to 326 IAC 8-3-3 (Open Top Vapor Degreasing Operations) for open top vapor 

degreasing operations constructed after January 1, 1980, the Permittee shall: 

(a) equip the open top vapor degreaser with a cover that can be opened and closed easily 

without disturbing the vapor zone; 

(b) keep the cover closed at all times except when processing workloads through the 

degreaser; 

(c) minimize solvent carry-out by: 

(1) Racking parts to allow complete drainage; 

(2) Moving parts in and out of the degreaser at less than eleven (11) feet per minute; 
McDowell Enterprises, Inc. Page 21 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(3) Degreasing the workload in the vapor zone at least thirty (30) seconds or until 

condensation ceases; 

(4) Tipping out any pools of solvent on the cleaned parts before removal; 

(5) Allowing parts to dry within the degreaser for at least fifteen (15) seconds or until 

visually dry; 

(d) not decrease porous or absorbent materials, such as cloth, leather, wood or rope; 

(e) not occupy more than half of the degreaser’s open top area with the workload; 

(f) not load the degreaser such that the vapor level drops more than fifty percent (50%) of 

the vapor depth when the workload is removed; 

(g) never spray above the vapor level; 

(h) repair solvent leaks immediately, or shut down the degreaser; 

(i) store waste solvent only in covered containers and not dispose of waste solvent or 

transfer it to another party, such that greater than twenty percent (20%) of the waste 

solvent (by weight) can evaporate into the atmosphere; 

(j) not use workplace fans near the degreaser opening; 

(k) not allow visually detectable water in the solvent exiting the water separator; and 

(l) provide a permanent, conspicuous label summarizing the operating requirements. 
McDowell Enterprises, Inc. Page 22 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

SECTION D.3 EMISSIONS UNIT OPERATION CONDITIONS

Emissions Unit Description:

(i) Three (3) natural gas fired heaters, identified as A16320GCB, A03818GCB and A03833GCB, 

capacity: 0.075 million British thermal units per hour, each. 

(j) Eleven (11) polishing and buffing units, equipped with a dust collector, rated at 7.4 X 10-8 grain 

per actual cubic foot, exhausting inside the building. 

(The information describing the process contained in this emissions unit description box is descriptive 

information and does not constitute enforceable conditions.) 

Emission Limitations and Standards [326 IAC 2-6.1-5(1)]

There are no Emission Limitations and Standards applicable to these emission units. 

Compliance Determination Requirement [326 IAC 2-1.1-11]

There are no Compliance Determination Requirements applicable to these emission units. 

Compliance Monitoring Requirements [326 IAC 2-5.1-3(e)(2)] [326 IAC 2-6.1-5(a)(2)]

There are no Compliance Monitoring Requirements applicable to these emission units. 

Record Keeping and Reporting Requirements [326 IAC 2-5.1-3(e)(2)] [326 IAC 2-6.1-5(a)(2)]

There are no Record Keeping and Reporting Requirements applicable to these emission units. 
McDowell Enterprises, Inc. Page 23 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

OFFICE OF AIR QUALITY 

COMPLIANCE BRANCH 

MINOR SOURCE OPERATING PERMIT 

ANNUAL NOTIFICATION

This form should be used to comply with the notification requirements under 326 IAC 2-6.1-5(a)(5). 

Company Name: McDowell Enterprises, Inc.

Address: 2010 Superior Street

City: Elkhart, Indiana 46515

Phone #: (574) 293-1042

MSOP #: M039-26362-00413

I hereby certify that McDowell Enterprises, Inc. is :  still in operation. 

 no longer in operation. 

I hereby certify that McDowell Enterprises, Inc. is :  in compliance with the requirements of 

MSOP M039-26362-00413. 

 not in compliance with the requirements of 

MSOP M039-26362-00413. 

 

Authorized Individual (typed): 

Title: 

Signature: 

Date: 

If there are any conditions or requirements for which the source is not in compliance, provide a narrative 

description of how the source did or will achieve compliance and the date compliance was, or will be 

achieved. 

Noncompliance: 
McDowell Enterprises, Inc. Page 24 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

MALFUNCTION REPORT 

INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT 

OFFICE OF AIR QUALITY 

FAX NUMBER - 317 233-6865 

This form should only be used to report malfunctions applicable to Rule 326 IAC 1-6

and to qualify for the exemption under 326 IAC 1-6-4.

THIS FACILITY MEETS THE APPLICABILITY REQUIREMENTS BECAUSE IT HAS POTENTIAL TO EMIT 25 TONS/YEAR 

PARTICULATE MATTER ?_____, 25 TONS/YEAR SULFUR DIOXIDE ?_____, 25 TONS/YEAR NITROGEN OXIDES?_____, 

25 TONS/YEAR VOC ?_____, 25 TONS/YEAR HYDROGEN SULFIDE ?_____, 25 TONS/YEAR TOTAL REDUCED SULFUR 

?_____, 25 TONS/YEAR REDUCED SULFUR COMPOUNDS ?_____, 25 TONS/YEAR FLUORIDES ?_____, 100 TONS/YEAR 

CARBON MONOXIDE ?_____, 10 TONS/YEAR ANY SINGLE HAZARDOUS AIR POLLUTANT ?_____, 25 TONS/YEAR ANY 

COMBINATION HAZARDOUS AIR POLLUTANT ?_____, 1 TON/YEAR LEAD OR LEAD COMPOUNDS MEASURED AS 

ELEMENTAL LEAD ?_____, OR IS A SOURCE LISTED UNDER 326 IAC 2-5.1-3(2) ?_____. EMISSIONS FROM 

MALFUNCTIONING CONTROL EQUIPMENT OR PROCESS EQUIPMENT CAUSED EMISSIONS IN EXCESS OF APPLICABLE 

LIMITATION ________. 

THIS MALFUNCTION RESULTED IN A VIOLATION OF: 326 IAC _______ OR, PERMIT CONDITION # _______ AND/OR 

PERMIT LIMIT OF _______________ 

THIS INCIDENT MEETS THE DEFINITION OF “MALFUNCTION” AS LISTED ON REVERSE SIDE ? Y N 

THIS MALFUNCTION IS OR WILL BE LONGER THAN THE ONE (1) HOUR REPORTING REQUIREMENT ? Y N 

COMPANY:_________________________________________________________PHONE NO. ( )___________________ 

LOCATION: (CITY AND COUNTY)_________________________________________________________________________ 

PERMIT NO. ________________ AFS PLANT ID: ________________ AFS POINT ID: ________________ INSP:__________ 

CONTROL/PROCESS DEVICE WHICH MALFUNCTIONED AND REASON:________________________________________ 

_____________________________________________________________________________________________________ 

DATE/TIME MALFUNCTION STARTED: _____/_____/ 20____ _________________________________________ AM / PM 

ESTIMATED HOURS OF OPERATION WITH MALFUNCTION CONDITION: _______________________________________ 

DATE/TIME CONTROL EQUIPMENT BACK-IN SERVICE______/______/ 20____ _______________ AM/PM 

TYPE OF POLLUTANTS EMITTED: TSP, PM-10, SO2, VOC, OTHER:________________________________________ 

ESTIMATED AMOUNT OF POLLUTANT EMITTED DURING MALFUNCTION: _______________________________________ 

______________________________________________________________________________________________________ 

MEASURES TAKEN TO MINIMIZE EMISSIONS:______________________________________________________________ 

___________________________________________________________________________________________________ 

REASONS WHY FACILITY CANNOT BE SHUTDOWN DURING REPAIRS: 

CONTINUED OPERATION REQUIRED TO PROVIDE ESSENTIAL* SERVICES:_____________________________________ 

CONTINUED OPERATION NECESSARY TO PREVENT INJURY TO PERSONS:_____________________________________ 

CONTINUED OPERATION NECESSARY TO PREVENT SEVERE DAMAGE TO EQUIPMENT:__________________________ 

INTERIM CONTROL MEASURES: (IF APPLICABLE)____________________________________________________________ 

_____________________________________________________________________________________________________ 

_____________________________________________________________________________________________________ 

MALFUNCTION REPORTED BY:__________________________________TITLE:___________________________ 

 (SIGNATURE IF FAXED) 

MALFUNCTION RECORDED BY:_______________________DATE:__________________TIME:__________________ 

*SEE PAGE 2 

PAGE 1 OF 2
McDowell Enterprises, Inc. Page 25 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

Please note - This form should only be used to report malfunctions 

applicable to Rule 326 IAC 1-6 and to qualify for 

the exemption under 326 IAC 1-6-4. 

326 IAC 1-6-1 Applicability of rule 

Sec. 1. This rule applies to the owner or operator of any facility required to obtain a permit under 

326 IAC 2-5.1 or 326 IAC 2-6.1.

326 IAC 1-2-39 “Malfunction” definition 

Sec. 39. Any sudden, unavoidable failure of any air pollution control equipment, process, or 

combustion or process equipment to operate in a normal and usual manner. 

*Essential services are interpreted to mean those operations, such as, the providing of electricity by 

power plants. Continued operation solely for the economic benefit of the owner or operator shall not 

be sufficient reason why a facility cannot be shutdown during a control equipment shutdown. 

If this item is checked on the front, please explain rationale:

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

________________________________________________________________________ 

PAGE 2 OF 2 
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Permit Reviewer: Christina Lowry 

ATTACHMENT A 

MCDOWELL ENTERPRISES, INC 

039-26362-00413 
McDowell Enterprises, Inc. Page 27 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

ATTACHMENT A

Title 40: Protection of Environment

PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE 

CATEGORIES 

Subpart N—National Emission Standards for Chromium Emissions From 

Hard and Decorative Chromium Electroplating and Chromium Anodizing 

Tanks

Source: 60 FR 4963, Jan. 25, 1995, unless otherwise noted.

§ 63.340 Applicability and designation of sources.

(a) The affected source to which the provisions of this subpart apply is each chromium electroplating or chromium 

anodizing tank at facilities performing hard chromium electroplating, decorative chromium electroplating, or chromium 

anodizing. 

(b) Owners or operators of affected sources subject to the provisions of this subpart must also comply with the 

requirements of subpart A of this part, according to the applicability of subpart A of this part to such sources, as 

identified in Table 1 of this subpart. 

(c) Process tanks associated with a chromium electroplating or chromium anodizing process, but in which neither 

chromium electroplating nor chromium anodizing is taking place, are not subject to the provisions of this subpart. 

Examples of such tanks include, but are not limited to, rinse tanks, etching tanks, and cleaning tanks. Likewise, tanks 

that contain a chromium solution, but in which no electrolytic process occurs, are not subject to this subpart. An 

example of such a tank is a chrome conversion coating tank where no electrical current is applied. 

(d) Affected sources in which research and laboratory operations are performed are exempt from the provisions of 

this subpart when such operations are taking place. 

(e) If you are an owner or operator of an area source subject to this subpart, you are exempt from the obligation to 

obtain a permit under 40 CFR part 70 or 71, provided you are not required to obtain a permit under 40 CFR 70.3(a) or 

71.3(a) for a reason other than your status as an area source under this subpart. Notwithstanding the previous 

sentence, you must continue to comply with the provisions of this subpart applicable to area sources. 

[60 FR 4963, Jan. 25, 1995, as amended at 61 FR 27787, June 3, 1996; 64 FR 69643, Dec. 14, 1999; 70 FR 75345, 

Dec. 19, 2005] 

§ 63.341 Definitions and nomenclature.

(a) Definitions. Terms used in this subpart are defined in the Act, in subpart A of this part, or in this section. For the 

purposes of subpart N of this part, if the same term is defined in subpart A of this part and in this section, it shall have 

the meaning given in this section. 

Add-on air pollution control device means equipment installed in the ventilation system of chromium electroplating 

and anodizing tanks for the purposes of collecting and containing chromium emissions from the tank(s). 

Air pollution control technique means any method, such as an add-on air pollution control device or a chemical fume 

suppressant, that is used to reduce chromium emissions from chromium electroplating and chromium anodizing 

tanks. 

Base metal means the metal or metal alloy that comprises the workpiece. 
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Bath component means the trade or brand name of each component(s) in trivalent chromium plating baths. For 

trivalent chromium baths, the bath composition is proprietary in most cases. Therefore, the trade or brand name for 

each component(s) can be used; however, the chemical name of the wetting agent contained in that component must 

be identified. 

Chemical fume suppressant means any chemical agent that reduces or suppresses fumes or mists at the surface of 

an electroplating or anodizing bath; another term for fume suppressant is mist suppressant. 

Chromic acid means the common name for chromium anhydride (CrO3). 

Chromium anodizing means the electrolytic process by which an oxide layer is produced on the surface of a base 

metal for functional purposes (e.g., corrosion resistance or electrical insulation) using a chromic acid solution. In 

chromium anodizing, the part to be anodized acts as the anode in the electrical circuit, and the chromic acid solution, 

with a concentration typically ranging from 50 to 100 grams per liter (g/L), serves as the electrolyte. 

Chromium anodizing tank means the receptacle or container along with the following accompanying internal and 

external components needed for chromium anodizing: rectifiers fitted with controls to allow for voltage adjustments, 

heat exchanger equipment, circulation pumps, and air agitation systems. 

Chromium electroplating tank means the receptacle or container along with the following internal and external 

components needed for chromium electroplating: Rectifiers, anodes, heat exchanger equipment, circulation pumps, 

and air agitation systems. 

Composite mesh-pad system means an add-on air pollution control device typically consisting of several mesh-pad 

stages. The purpose of the first stage is to remove large particles. Smaller particles are removed in the second stage, 

which consists of the composite mesh pad. A final stage may remove any reentrained particles not collected by the 

composite mesh pad. 

Decorative chromium electroplating means the process by which a thin layer of chromium (typically 0.003 to 2.5 

microns) is electrodeposited on a base metal, plastic, or undercoating to provide a bright surface with wear and 

tarnish resistance. In this process, the part(s) serves as the cathode in the electrolytic cell and the solution serves as 

the electrolyte. Typical current density applied during this process ranges from 540 to 2,400 Amperes per square 

meter (A/m2

 ) for total plating times ranging between 0.5 to 5 minutes. 

Electroplating or anodizing bath means the electrolytic solution used as the conducting medium in which the flow of 

current is accompanied by movement of metal ions for the purposes of electroplating metal out of the solution onto a 

workpiece or for oxidizing the base material. 

Emission limitation means, for the purposes of this subpart, the concentration of total chromium allowed to be emitted 

expressed in milligrams per dry standard cubic meter (mg/dscm), or the allowable surface tension expressed in dynes 

per centimeter (dynes/cm). 

Enclosed hard chromium electroplating tank means a chromium electroplating tank that is equipped with an enclosing 

hood and ventilated at half the rate or less that of an open surface tank of the same surface area. 

Facility means the major or area source at which chromium electroplating or chromium anodizing is performed. 

Fiber-bed mist eliminator means an add-on air pollution control device that removes contaminants from a gas stream 

through the mechanisms of inertial impaction and Brownian diffusion. These devices are typically installed 

downstream of another control device, which serves to prevent plugging, and consist of one or more fiber beds. Each 

bed consists of a hollow cylinder formed from two concentric screens; the fiber between the screens may be 

fabricated from glass, ceramic plastic, or metal. 

Foam blanket means the type of chemical fume suppressant that generates a layer of foam across the surface of a 

solution when current is applied to that solution. 
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Fresh water means water, such as tap water, that has not been previously used in a process operation or, if the water 

has been recycled from a process operation, it has been treated and meets the effluent guidelines for chromium 

wastewater. 

Hard chromium electroplating or industrial chromium electroplating means a process by which a thick layer of 

chromium (typically 1.3 to 760 microns) is electrodeposited on a base material to provide a surface with functional 

properties such as wear resistance, a low coefficient of friction, hardness, and corrosion resistance. In this process, 

the part serves as the cathode in the electrolytic cell and the solution serves as the electrolyte. Hard chromium 

electroplating process is performed at current densities typically ranging from 1,600 to 6,500 A/m2 for total plating 

times ranging from 20 minutes to 36 hours depending upon the desired plate thickness. 

Hexavalent chromium means the form of chromium in a valence state of +6. 

Large, hard chromium electroplating facility means a facility that performs hard chromium electroplating and has a 

maximum cumulative potential rectifier capacity greater than or equal to 60 million ampere-hours per year (amphr/yr). 

Maximum cumulative potential rectifier capacity means the summation of the total installed rectifier capacity 

associated with the hard chromium electroplating tanks at a facility, expressed in amperes, multiplied by the 

maximum potential operating schedule of 8,400 hours per year and 0.7, which assumes that electrodes are energized 

70 percent of the total operating time. The maximum potential operating schedule is based on operating 24 hours per 

day, 7 days per week, 50 weeks per year. 

Open surface hard chromium electroplating tank means a chromium electroplating tank that is ventilated at a rate 

consistent with good ventilation practices for open tanks. 

Operating parameter value means a minimum or maximum value established for a control device or process 

parameter which, if achieved by itself or in combination with one or more other operating parameter values, 

determines that an owner or operator is in continual compliance with the applicable emission limitation or standard. 

Packed-bed scrubber means an add-on air pollution control device consisting of a single or double packed bed that 

contains packing media on which the chromic acid droplets impinge. The packed-bed section of the scrubber is 

followed by a mist eliminator to remove any water entrained from the packed-bed section. 

Research or laboratory operation means an operation whose primary purpose is for research and development of 

new processes and products, that is conducted under the close supervision of technically trained personnel, and that 

is not involved in the manufacture of products for commercial sale in commerce, except in a de minimis manner. 

Small, hard chromium electroplating facility means a facility that performs hard chromium electroplating and has a 

maximum cumulative potential rectifier capacity less than 60 million amp-hr/yr. 

Stalagmometer means an instrument used to measure the surface tension of a solution by determining the mass of a 

drop of liquid by weighing a known number of drops or by counting the number of drops obtained from a given 

volume of liquid. 

Surface tension means the property, due to molecular forces, that exists in the surface film of all liquids and tends to 

prevent liquid from spreading. 

Tank operation means the time in which current and/or voltage is being applied to a chromium electroplating tank or a 

chromium anodizing tank. 

Tensiometer means an instrument used to measure the surface tension of a solution by determining the amount of 

force needed to pull a ring from the liquid surface. The amount of force is proportional to the surface tension. 

Trivalent chromium means the form of chromium in a valence state of +3. 
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Permit Reviewer: Christina Lowry 

Trivalent chromium process means the process used for electrodeposition of a thin layer of chromium onto a base 

material using a trivalent chromium solution instead of a chromic acid solution. 

Wetting agent means the type of chemical fume suppressant that reduces the surface tension of a liquid. 

(b) Nomenclature. The nomenclature used in this subpart has the following meaning: 

(1) AMR=the allowable mass emission rate from each type of affected source subject to the same emission limitation 

in milligrams per hour (mg/hr). 

(2) AMRsys=the allowable mass emission rate from affected sources controlled by an add-on air pollution control 

device controlling emissions from multiple sources in mg/hr. 

(3) EL=the applicable emission limitation from §63.342 in milligrams per dry standard cubic meter (mg/dscm). 

(4) IAtotal=the sum of all inlet duct areas from both affected and nonaffected sources in meters squared. 

(5) IDAi=the total inlet area for all ducts associated with affected sources in meters squared. 

(6) IDAi,a=the total inlet duct area for all ducts conveying chromic acid from each type of affected source performing 

the same operation, or each type of affected source subject to the same emission limitation in meters squared. 

(7) VR=the total of ventilation rates for each type of affected source subject to the same emission limitation in dry 

standard cubic meters per minute (dscm/min). 

(8) VRinlet=the total ventilation rate from all inlet ducts associated with affected sources in dscm/min. 

(9) VRinlet,a=the total ventilation rate from all inlet ducts conveying chromic acid from each type of affected source 

performing the same operation, or each type of affected source subject to the same emission limitation in dscm/min. 

(10) VRtot=the average total ventilation rate for the three test runs as determined at the outlet by means of the Method 

306 in appendix A of this part testing in dscm/min. 

[60 FR 4963, Jan. 25, 1995, as amended at 69 FR 42894, July 19, 2004] 

§ 63.342 Standards.

(a) Each owner or operator of an affected source subject to the provisions of this subpart shall comply with these 

requirements on and after the compliance dates specified in §63.343(a). All affected sources are regulated by 

applying maximum achievable control technology. 

(b) Applicability of emission limitations. (1) The emission limitations in this section apply during tank operation as 

defined in §63.341, and during periods of startup and shutdown as these are routine occurrences for affected sources 

subject to this subpart. The emission limitations do not apply during periods of malfunction, but the work practice 

standards that address operation and maintenance and that are required by paragraph (f) of this section must be 

followed during malfunctions. 

(2) If an owner or operator is controlling a group of tanks with a common add-on air pollution control device, the 

emission limitations of paragraphs (c), (d), and (e) of this section apply whenever any one affected source is 

operated. The emission limitation that applies to the group of affected sources is: 

(i) The emission limitation identified in paragraphs (c), (d), and (e) of this section if the affected sources are 

performing the same type of operation (e.g., hard chromium electroplating), are subject to the same emission 

limitation, and are not controlled by an add-on air pollution control device also controlling nonaffected sources; 
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(ii) The emission limitation calculated according to §63.344(e)(3) if affected sources are performing the same type of 

operation, are subject to the same emission limitation, and are controlled with an add-on air pollution control device 

that is also controlling nonaffected sources; and 

(iii) The emission limitation calculated according to §63.344(e)(4) if affected sources are performing different types of 

operations, or affected sources are performing the same operations but subject to different emission limitations, and 

are controlled with an add-on air pollution control device that may also be controlling emissions from nonaffected 

sources. 

(c)(1) Standards for open surface hard chromium electroplating tanks. During tank operation, each owner or operator 

of an existing, new, or reconstructed affected source shall control chromium emissions discharged to the atmosphere 

from that affected source by either: 

(i) Not allowing the concentration of total chromium in the exhaust gas stream discharged to the atmosphere to 

exceed 0.015 milligrams of total chromium per dry standard cubic meter (mg/dscm) of ventilation air (6.6 × 10−6

grains 

per dry standard cubic foot (gr/dscf)) for all open surface hard chromium electroplating tanks that are affected 

sources other than those that are existing affected sources located at small hard chromium electroplating facilities; or 

(ii) Not allowing the concentration of total chromium in the exhaust gas stream discharged to the atmosphere to 

exceed 0.03 mg/dscm (1.3 × 10−5

gr/dscf) if the open surface hard chromium electroplating tank is an existing affected 

source and is located at a small, hard chromium electroplating facility; or 

(iii) If a chemical fume suppressant containing a wetting agent is used, by not allowing the surface tension of the 

electroplating or anodizing bath contained within the affected tank to exceed 45 dynes per centimeter (dynes/cm) (3.1 

× 10−3

pound-force per foot (lbf/ft)) as measured by a stalagmometer or 35 dynes/cm (2.4 × 10−3lbf/ft) as measured by 

a tensiometer at any time during tank operation. 

(2) Standards for enclosed hard chromium electroplating tanks. During tank operation, each owner or operator of an 

existing, new, or reconstructed affected source shall control chromium emissions discharged to the atmosphere from 

that affected source by either: 

(i) Not allowing the concentration of total chromium in the exhaust gas stream discharged to the atmosphere to 

exceed 0.015 mg/dscm (6.6 × 10−6

gr/dscf) for all enclosed hard chromium electroplating tanks that are affected 

sources other than those that are existing affected sources located at small, hard chromium electroplating facilities; or 

(ii) Not allowing the concentration of total chromium in the exhaust gas stream discharged to the atmosphere to 

exceed 0.03 mg/dscm (1.3 × 10−5

gr/dscf) if the enclosed hard chromium electroplating tank is an existing affected 

source and is located at a small, hard chromium electroplating facility; or 

(iii) If a chemical fume suppressant containing a wetting agent is used, by not allowing the surface tension of the 

electroplating or anodizing bath contained within the affected tank to exceed 45 dynes/cm (3.1 × 10−3

lbf/ft) as 

measured by a stalagmometer or 35 dynes/cm (2.4 × 10−3

lbf/ft) as measured by a tensiometer at any time during tank 

operation; or 

(iv) Not allowing the mass rate of total chromium in the exhaust gas stream discharged to the atmosphere to exceed 

the maximum allowable mass emission rate determined by using the calculation procedure in §63.344(f)(1)(i) for all 

enclosed hard chromium electroplating tanks that are affected sources other than those that are existing affected 

sources located at small, hard chromium electroplating facilities; or 

(v) Not allowing the mass rate of total chromium in the exhaust gas stream discharged to the atmosphere to exceed 

the maximum allowable mass emission rate determined by using the calculation procedure in §63.344(f)(1)(ii) if the 

enclosed hard chromium electroplating tank is an existing affected source and is located at a small, hard chromium 

electroplating facility. 

(3)(i) An owner or operator may demonstrate the size of a hard chromium electroplating facility through the definitions 

in §63.341(a). Alternatively, an owner or operator of a facility with a maximum cumulative potential rectifier capacity of 

60 million amp-hr/yr or more may be considered small if the actual cumulative rectifier capacity is less than 60 million 

amp-hr/yr as demonstrated using the following procedures: 
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Permit Reviewer: Christina Lowry 

(A) If records show that the facility's previous annual actual rectifier capacity was less than 60 million amp-hr/yr, by 

using nonresettable ampere-hr meters and keeping monthly records of actual ampere-hr usage for each 12-month 

rolling period following the compliance date in accordance with §63.346(b)(12). The actual cumulative rectifier 

capacity for the previous 12-month rolling period shall be tabulated monthly by adding the capacity for the current 

month to the capacities for the previous 11 months; or 

(B) By accepting a federally-enforceable limit on the maximum cumulative potential rectifier capacity of a hard 

chromium electroplating facility and by maintaining monthly records in accordance with §63.346(b)(12) to 

demonstrate that the limit has not been exceeded. The actual cumulative rectifier capacity for the previous 12-month 

rolling period shall be tabulated monthly by adding the capacity for the current month to the capacities for the 

previous 11 months. 

(ii) Once the monthly records required to be kept by §63.346(b)(12) and by this paragraph (c)(3)(ii) show that the 

actual cumulative rectifier capacity over the previous 12-month rolling period corresponds to the large designation, 

the owner or operator is subject to the emission limitation identified in paragraph (c)(1)(i), (iii), (c)(2)(i), (iii), or (iv) of 

this section, in accordance with the compliance schedule of §63.343(a)(5). 

(d) Standards for decorative chromium electroplating tanks using a chromic acid bath and chromium anodizing tanks. 

During tank operation, each owner or operator of an existing, new, or reconstructed affected source shall control 

chromium emissions discharged to the atmosphere from that affected source by either: 

(1) Not allowing the concentration of total chromium in the exhaust gas stream discharged to the atmosphere to 

exceed 0.01 mg/dscm (4.4×10−6

gr/dscf); or 

(2) If a chemical fume suppressant containing a wetting agent is used, by not allowing the surface tension of the 

electroplating or anodizing bath contained within the affected source to exceed 45 dynes/cm (3.1 × 10−3

lbf/ft) as 

measured by a stalagmometer or 35 dynes/cm (2.4 × 10−3

lbf/ft) as measured by a tensiometer at any time during 

operation of the tank. 

(e) Standards for decorative chromium electroplating tanks using a trivalent chromium bath. (1) Each owner or 

operator of an existing, new, or reconstructed decorative chromium electroplating tank that uses a trivalent chromium 

bath that incorporates a wetting agent as a bath ingredient is subject to the recordkeeping and reporting requirements 

of §§63.346(b)(14) and 63.347(i), but are not subject to the work practice requirements of paragraph (f) of this 

section, or the continuous compliance monitoring requirements in §63.343(c). The wetting agent must be an 

ingredient in the trivalent chromium bath components purchased from vendors. 

(2) Each owner or operator of an existing, new, or reconstructed decorative chromium electroplating tank that uses a 

trivalent chromium bath that does not incorporate a wetting agent as a bath ingredient is subject to the standards of 

paragraph (d) of this section. 

(3) Each owner or operator of existing, new, or reconstructed decorative chromium electroplating tank that had been 

using a trivalent chromium bath that incorporates a wetting agent and ceases using this type of bath must fulfill the 

reporting requirements of §63.347(i)(3) and comply with the applicable emission limitation within the timeframe 

specified in §63.343(a)(7). 

(f) Operation and maintenance practices. All owners or operators subject to the standards in paragraphs (c) and (d) of 

this section are subject to these operation and maintenance practices. 

(1)(i) At all times, including periods of startup, shutdown, and malfunction, owners or operators shall operate and 

maintain any affected source, including associated air pollution control devices and monitoring equipment, in a 

manner consistent with good air pollution control practices. 

(ii) Malfunctions shall be corrected as soon as practicable after their occurrence. 

(iii) Operation and maintenance requirements established pursuant to section 112 of the Act are enforceable 

independent of emissions limitations or other requirements in relevant standards. 
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(2)(i) Determination of whether acceptable operation and maintenance procedures are being used will be based on 

information available to the Administrator, which may include, but is not limited to, monitoring results; review of the 

operation and maintenance plan, procedures, and records; and inspection of the source. 

(ii) Based on the results of a determination made under paragraph (f)(2)(i) of this section, the Administrator may 

require that an owner or operator of an affected source make changes to the operation and maintenance plan 

required by paragraph (f)(3) of this section for that source. Revisions may be required if the Administrator finds that 

the plan: 

(A) Does not address a malfunction that has occurred; 

(B) Fails to provide for the proper operation of the affected source, the air pollution control techniques, or the control 

system and process monitoring equipment during a malfunction in a manner consistent with good air pollution control 

practices; or 

(C) Does not provide adequate procedures for correcting malfunctioning process equipment, air pollution control 

techniques, or monitoring equipment as quickly as practicable. 

(3) Operation and maintenance plan. (i) The owner or operator of an affected source subject to paragraph (f) of this 

section shall prepare an operation and maintenance plan no later than the compliance date, except for hard 

chromium electroplaters and the chromium anodizing operations in California which have until January 25, 1998. The 

plan shall be incorporated by reference into the source's title V permit, if and when a title V permit is required. The 

plan shall include the following elements: 

(A) The plan shall specify the operation and maintenance criteria for the affected source, the add-on air pollution 

control device (if such a device is used to comply with the emission limits), and the process and control system 

monitoring equipment, and shall include a standardized checklist to document the operation and maintenance of this 

equipment; 

(B) For sources using an add-on control device or monitoring equipment to comply with this subpart, the plan shall 

incorporate the operation and maintenance practices for that device or monitoring equipment, as identified in Table 1 

of this section, if the specific equipment used is identified in Table 1 of this section; 

(C) If the specific equipment used is not identified in Table 1 of this section, the plan shall incorporate proposed 

operation and maintenance practices. These proposed operation and maintenance practices shall be submitted for 

approval as part of the submittal required under §63.343(d); 

(D) The plan shall specify procedures to be followed to ensure that equipment or process malfunctions due to poor 

maintenance or other preventable conditions do not occur; and 

(E) The plan shall include a systematic procedure for identifying malfunctions of process equipment, add-on air 

pollution control devices, and process and control system monitoring equipment and for implementing corrective 

actions to address such malfunctions. 

(ii) If the operation and maintenance plan fails to address or inadequately addresses an event that meets the 

characteristics of a malfunction at the time the plan is initially developed, the owner or operator shall revise the 

operation and maintenance plan within 45 days after such an event occurs. The revised plan shall include procedures 

for operating and maintaining the process equipment, add-on air pollution control device, or monitoring equipment 

during similar malfunction events, and a program for corrective action for such events. 

(iii) Recordkeeping associated with the operation and maintenance plan is identified in §63.346(b). Reporting 

associated with the operation and maintenance plan is identified in §63.347 (g) and (h) and paragraph (f)(3)(iv) of this 

section. 

(iv) If actions taken by the owner or operator during periods of malfunction are inconsistent with the procedures 

specified in the operation and maintenance plan required by paragraph (f)(3)(i) of this section, the owner or operator 

shall record the actions taken for that event and shall report by phone such actions within 2 working days after 
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Permit Reviewer: Christina Lowry 

commencing actions inconsistent with the plan. This report shall be followed by a letter within 7 working days after the 

end of the event, unless the owner or operator makes alternative reporting arrangements, in advance, with the 

Administrator. 

(v) The owner or operator shall keep the written operation and maintenance plan on record after it is developed to be 

made available for inspection, upon request, by the Administrator for the life of the affected source or until the source 

is no longer subject to the provisions of this subpart. In addition, if the operation and maintenance plan is revised, the 

owner or operator shall keep previous (i.e., superseded) versions of the operation and maintenance plan on record to 

be made available for inspection, upon request, by the Administrator for a period of 5 years after each revision to the 

plan. 

(vi) To satisfy the requirements of paragraph (f)(3) of this section, the owner or operator may use applicable standard 

operating procedure (SOP) manuals, Occupational Safety and Health Administration (OSHA) plans, or other existing 

plans, provided the alternative plans meet the requirements of this section. 

(g) The standards in this section that apply to chromic acid baths shall not be met by using a reducing agent to 

change the form of chromium from hexavalent to trivalent. 

Table 1 to §63.342—Summary of Operation and Maintenance Practices 

Control technique Operation and maintenance practices Frequency

Composite mesh-pad 

(CMP) system

1. Visually inspect device to ensure there is proper 

drainage, no chronic acid buildup on the pads, and no 

evidence of chemical attack on the structural integrity of the 

device

1. 1/quarter.

 2. Visually inspect back portion of the mesh pad closest to 

the fan to ensure there is no breakthrough of chromic acid 

mist

2. 1/quarter.

 3. Visually inspect ductwork from tank to the control device 

to ensure there are no leaks

3. 1/quarter.

 4. Perform washdown of the composite mesh-pads in 

accordance with manufacturers recommendations

4. Per manufacturer.

Packed-bed scrubber 

(PSB)

1. Visually inspect device to ensure there is proper 

drainage, no chromic acid buildup on the packed beds, and 

no evidence of chemical attack on the structural integrity of 

the device

1. 1/quarter.

 2. Visually inspect back portion of the chevron blade mist 

eliminator to ensure that it is dry and there is no 

breakthrough of chromic acid mist

2. 1/quarter.

 3. Same as number 3 above 3. 1/quarter.

 4. Add fresh makeup water to the top of the packed beda,b 4. Whenever makeup 

is added.

PBS/CMP system 1. Same as for CMP system 1. 1/quarter.

 2. Same as for CMP system 2. 1/quarter.

 3. Same as for CMP system 3. 1/quarter.

 4. Same as for CMP system 4. Per manufacturer.

Fiber-bed mist 1. Visually inspect fiber-bed unit and prefiltering device to 1. 1/quarter.
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eliminatorc ensure there is proper drainage, no chromic acid buildup in 

the units, and no evidence of chemical attack on the 

structural integrity of the devices

 2. Visually inspect ductwork from tank or tanks to the 

control device to ensure there are no leaks

2. 1/quarter.

 3. Perform washdown of fiber elements in accordance with 

manufacturers recommendations

3. Per manufacturer.

Air pollution control 

device (APCD) not 

listed in rule

To be proposed by the source for approval by the 

Administrator

To be proposed by the 

source for approval by 

the Administrator.

Monitoring Equipment

Pitot tube Backflush with water, or remove from the duct and rinse 

with fresh water. Replace in the duct and rotate 180 

degrees to ensure that the same zero reading is obtained. 

Check pitot tube ends for damage. Replace pitot tube if 

cracked or fatigued

1/quarter.

Stalagmometer Follow manufacturers recommendations

a

If greater than 50 percent of the scrubber water is drained (e.g., for maintenance purposes), makeup water may be 

added to the scrubber basin. 

b

For horizontal-flow scrubbers, top is defined as the section of the unit directly above the packing media such that the 

makeup water would flow perpendicular to the air flow through the packing. For vertical-flow units, the top is defined 

as the area downstream of the packing material such that the makeup water would flow countercurrent to the air flow 

through the unit. 

c

Work practice standards for the control device installed upstream of the fiber-bed mist eliminator to prevent plugging 

do not apply as long as the work practice standards for the fiber-bed unit are followed. 

[60 FR 4963, Jan. 25, 1995; 60 FR 33122, June 27, 1995, as amended at 61 FR 27787, June 3, 1996; 62 FR 42920, 

Aug. 11, 1997; 68 FR 37347, June 23, 2003; 69 FR 42894, July 19, 2004; 71 FR 20456, Apr. 20, 2006] 

§ 63.343 Compliance provisions.

(a) Compliance dates. (1) The owner or operator of an existing affected source shall comply with the emission 

limitations in §63.342 as follows: 

(i) No later than 1 year after January 25, 1995, if the affected source is a decorative chromium electroplating tank; 

and 

(ii) No later than 2 years after January 25, 1995, if the affected source is a hard chromium electroplating tank or a 

chromium anodizing tank. 

(2) The owner or operator of a new or reconstructed affected source that has an initial startup after January 25, 1995, 

shall comply immediately upon startup of the source. The owner or operator of a new or reconstructed affected 

source that has an initial startup after December 16, 1993 but before January 25, 1995, shall follow the compliance 

schedule of §63.6(b)(1). 

(3) The owner or operator of an existing area source that increases actual or potential emissions of hazardous air 

pollutants such that the area source becomes a major source must comply with the provisions for existing major 

sources, including the reporting provisions of §63.347(g), immediately upon becoming a major source. 
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(4) The owner or operator of a new area source (i.e., an area source for which construction or reconstruction was 

commenced after December 16, 1993) that increases actual or potential emissions of hazardous air pollutants such 

that the area source becomes a major source must comply with the provisions for new major sources, immediately 

upon becoming a major source. 

(5) An owner or operator of an existing hard chromium electroplating tank or tanks located at a small, hard chromium 

electroplating facility that increases its maximum cumulative potential rectifier capacity, or its actual cumulative 

rectifier capacity, such that the facility becomes a large, hard chromium electroplating facility must comply with the 

requirements of §63.342(c)(1)(i) for all hard chromium electroplating tanks at the facility no later than 1 year after the 

month in which monthly records required by §§63.342(c)(2) and 63.346(b)(12) show that the large designation is met, 

or by the compliance date specified in paragraph (a)(1)(ii) of this section, whichever is later. 

(6) Request for an extension of compliance. An owner or operator of an affected source or sources that requests an 

extension of compliance shall do so in accordance with this paragraph and the applicable paragraphs of §63.6(i). 

When the owner or operator is requesting the extension for more than one affected source located at the facility, then 

only one request may be submitted for all affected sources at the facility. 

(i) The owner or operator of an existing affected source who is unable to comply with a relevant standard under this 

subpart may request that the Administrator (or a State, when the State has an approved part 70 permit program and 

the source is required to obtain a part 70 permit under that program, or a State, when the State has been delegated 

the authority to implement and enforce the emission standard for that source) grant an extension allowing the owner 

or operator up to 1 additional year to comply with the standard for the affected source. The owner or operator of an 

affected source who has requested an extension of compliance under this paragraph and is otherwise required to 

obtain a title V permit for the source shall apply for such permit or apply to have the title V permit revised to 

incorporate the conditions of the extension of compliance. The conditions of an extension of compliance granted 

under this paragraph will be incorporated into the owner or operator's title V permit for the affected source(s) 

according to the provisions of 40 CFR part 70 or 40 CFR part 71, whichever is applicable. 

(ii) Any request under this paragraph for an extension of compliance with a relevant standard shall be submitted in 

writing to the appropriate authority not later than 6 months before the affected source's compliance date as specified 

in this section. 

(7) An owner or operator of a decorative chromium electroplating tank that uses a trivalent chromium bath that 

incorporates a wetting agent, and that ceases using the trivalent chromium process, must comply with the emission 

limitation now applicable to the tank within 1 year of switching bath operation. 

(b) Methods to demonstrate initial compliance. (1) Except as provided in paragraphs (b)(2) and (b)(3) of this section, 

an owner or operator of an affected source subject to the requirements of this subpart is required to conduct an initial 

performance test as required under §63.7, except for hard chromium electroplaters and chromium anodizing 

operations in California which have until January 25, 1998, using the procedures and test methods listed in §§63.7 

and 63.344. 

(2) If the owner or operator of an affected source meets all of the following criteria, an initial performance test is not 

required to be conducted under this subpart: 

(i) The affected source is a hard chromium electroplating tank, a decorative chromium electroplating tank or a 

chromium anodizing tank; and 

(ii) A wetting agent is used in the plating or anodizing bath to inhibit chromium emissions from the affected source; 

and 

(iii) The owner or operator complies with the applicable surface tension limit of §63.342(c)(1)(iii), (c)(2)(iii), or (d)(2) as

demonstrated through the continuous compliance monitoring required by paragraph (c)(5)(ii) of this section. 

(3) If the affected source is a decorative chromium electroplating tank using a trivalent chromium bath, and the owner 

or operator is subject to the provisions of §63.342(e), an initial performance test is not required to be conducted under 

this subpart. 
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(c) Monitoring to demonstrate continuous compliance. The owner or operator of an affected source subject to the 

emission limitations of this subpart shall conduct monitoring according to the type of air pollution control technique 

that is used to comply with the emission limitation. The monitoring required to demonstrate continuous compliance 

with the emission limitations is identified in this section for the air pollution control techniques expected to be used by 

the owners or operators of affected sources. 

(1) Composite mesh-pad systems. (i) During the initial performance test, the owner or operator of an affected source, 

or a group of affected sources under common control, complying with the emission limitations in §63.342 through the 

use of a composite mesh-pad system shall determine the outlet chromium concentration using the test methods and 

procedures in §63.344(c), and shall establish as a site-specific operating parameter the pressure drop across the 

system, setting the value that corresponds to compliance with the applicable emission limitation, using the 

procedures in §63.344(d)(5). An owner or operator may conduct multiple performance tests to establish a range of 

compliant pressure drop values, or may set as the compliant value the average pressure drop measured over the 

three test runs of one performance test and accept ±2 inches of water column from this value as the compliant range. 

(ii) On and after the date on which the initial performance test is required to be completed under §63.7, except for 

hard chromium electroplaters and chromium anodizing operations in California, which have until January 25, 1998, 

the owner or operator of an affected source, or group of affected sources under common control, shall monitor and 

record the pressure drop across the composite mesh-pad system once each day that any affected source is 

operating. To be in compliance with the standards, the composite mesh-pad system shall be operated within ±2 

inches of water column of the pressure drop value established during the initial performance test, or shall be operated 

within the range of compliant values for pressure drop established during multiple performance tests. 

(iii) The owner or operator of an affected source complying with the emission limitations in §63.343 through the use of 

a composite mesh-pad system may repeat the performance test and establish as a new site-specific operating 

parameter the pressure drop across the composite mesh-pad system according to the requirements in paragraphs 

(c)(1)(i) or (ii) of this section. To establish a new site-specific operating parameter for pressure drop, the owner or 

operator shall satisfy the requirements specified in paragraphs (c)(1)(iii)(A) through (D) of this section. 

(A) Determine the outlet chromium concentration using the test methods and procedures in §63.344(c); 

(B) Establish the site-specific operating parameter value using the procedures §63.344(d)(5); 

(C) Satisfy the recordkeeping requirements in §63.346(b)(6) through (8); and 

(D) Satisfy the reporting requirements in §63.347(d) and (f). 

(iv) The requirement to operate a composite mesh-pad system within the range of pressure drop values established 

under paragraphs (c)(1)(i) through (iii) of this section does not apply during automatic washdown cycles of the 

composite mesh-pad system. 

(2) Packed-bed scrubber systems. (i) During the initial performance test, the owner or operator of an affected source, 

or group of affected sources under common control, complying with the emission limitations in §63.342 through the 

use of a packed-bed scrubber system shall determine the outlet chromium concentration using the procedures in 

§63.344(c), and shall establish as site-specific operating parameters the pressure drop across the system and the 

velocity pressure at the common inlet of the control device, setting the value that corresponds to compliance with the 

applicable emission limitation using the procedures in §63.344(d) (4) and (5). An owner or operator may conduct 

multiple performance tests to establish a range of compliant operating parameter values. Alternatively, the owner or 

operator may set as the compliant value the average pressure drop and inlet velocity pressure measured over the 

three test runs of one performance test, and accept ±1 inch of water column from the pressure drop value and ±10 

percent from the velocity pressure value as the compliant range. 

(ii) On and after the date on which the initial performance test is required to be completed under §63.7, except for 

hard chromium electroplaters and chromium anodizing operations in California which have until January 25, 1998, the 

owner or operator of an affected source, or group of affected sources under common control, shall monitor and 

record the velocity pressure at the inlet to the packed-bed system and the pressure drop across the scrubber system 

once each day that any affected source is operating. To be in compliance with the standards, the scrubber system 

shall be operated within ±10 percent of the velocity pressure value established during the initial performance test, and 
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within ±1 inch of water column of the pressure drop value established during the initial performance test, or within the 

range of compliant operating parameter values established during multiple performance tests. 

(3) Packed-bed scrubber/composite mesh-pad system. The owner or operator of an affected source, or group of 

affected sources under common control, that uses a packed-bed scrubber in conjunction with a composite mesh-pad 

system to meet the emission limitations of §63.342 shall comply with the monitoring requirements for composite 

mesh-pad systems as identified in paragraph (c)(1) of this section. 

(4) Fiber-bed mist eliminator. (i) During the initial performance test, the owner or operator of an affected source, or 

group of affected sources under common control, complying with the emission limitations in §63.342 through the use 

of a fiber-bed mist eliminator shall determine the outlet chromium concentration using the procedures in §63.344(c), 

and shall establish as a site-specific operating parameter the pressure drop across the fiber-bed mist eliminator and 

the pressure drop across the control device installed upstream of the fiber bed to prevent plugging, setting the value 

that corresponds to compliance with the applicable emission limitation using the procedures in §63.344(d)(5). An 

owner or operator may conduct multiple performance tests to establish a range of compliant pressure drop values, or 

may set as the compliant value the average pressure drop measured over the three test runs of one performance test 

and accept ±1 inch of water column from this value as the compliant range. 

(ii) On and after the date on which the initial performance test is required to be completed under §63.7, except for 

hard chromium electroplaters and chromium anodizing operations in California which have until January 25, 1998, the 

owner or operator of an affected source, or group of affected sources under common control, shall monitor and 

record the pressure drop across the fiber-bed mist eliminator, and the control device installed upstream of the fiber 

bed to prevent plugging, once each day that any affected source is operating. To be in compliance with the 

standards, the fiber-bed mist eliminator and the upstream control device shall be operated within ±1 inch of water 

column of the pressure drop value established during the initial performance test, or shall be operated within the 

range of compliant values for pressure drop established during multiple performance tests. 

(5) Wetting agent-type or combination wetting agent-type/foam blanket fume suppressants. (i) During the initial 

performance test, the owner or operator of an affected source complying with the emission limitations in §63.342 

through the use of a wetting agent in the electroplating or anodizing bath shall determine the outlet chromium 

concentration using the procedures in §63.344(c). The owner or operator shall establish as the site-specific operating 

parameter the surface tension of the bath using Method 306B, appendix A of this part, setting the maximum value 

that corresponds to compliance with the applicable emission limitation. In lieu of establishing the maximum surface 

tension during the performance test, the owner or operator may accept 45 dynes/cm as measured by a 

stalagmometer or 35 dynes/cm as measured by a tensiometer as the maximum surface tension value that 

corresponds to compliance with the applicable emission limitation. However, the owner or operator is exempt from 

conducting a performance test only if the criteria of paragraph (b)(2) of this section are met. 

(ii) On and after the date on which the initial performance test is required to be completed under §63.7, except for 

hard chromium electroplaters and chromium anodizing operations in California, which have until January 25, 1998, 

the owner or operator of an affected source shall monitor the surface tension of the electroplating or anodizing bath. 

Operation of the affected source at a surface tension greater than the value established during the performance test, 

or greater than 45 dynes/cm as measured by a stalagmometer or 35 dynes/cm as measured by a tensiometer if the 

owner or operator is using this value in accordance with paragraph (c)(5)(i) of this section, shall constitute 

noncompliance with the standards. The surface tension shall be monitored according to the following schedule: 

(A) The surface tension shall be measured once every 4 hours during operation of the tank with a stalagmometer or a 

tensiometer as specified in Method 306B, appendix A of this part. 

(B) The time between monitoring can be increased if there have been no exceedances. The surface tension shall be 

measured once every 4 hours of tank operation for the first 40 hours of tank operation after the compliance date. 

Once there are no exceedances during 40 hours of tank operation, surface tension measurement may be conducted 

once every 8 hours of tank operation. Once there are no exceedances during 40 hours of tank operation, surface 

tension measurement may be conducted once every 40 hours of tank operation on an ongoing basis, until an 

exceedance occurs. The minimum frequency of monitoring allowed by this subpart is once every 40 hours of tank 

operation. 

(C) Once an exceedance occurs as indicated through surface tension monitoring, the original monitoring schedule of 

once every 4 hours must be resumed. A subsequent decrease in frequency shall follow the schedule laid out in 
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paragraph (c)(5)(ii)(B) of this section. For example, if an owner or operator had been monitoring an affected source 

once every 40 hours and an exceedance occurs, subsequent monitoring would take place once every 4 hours of tank 

operation. Once an exceedance does not occur for 40 hours of tank operation, monitoring can occur once every 8 

hours of tank operation. Once an exceedance does not occur for 40 hours of tank operation on this schedule, 

monitoring can occur once every 40 hours of tank operation. 

(iii) Once a bath solution is drained from the affected tank and a new solution added, the original monitoring schedule 

of once every 4 hours must be resumed, with a decrease in monitoring frequency allowed following the procedures of 

paragraphs (c)(5)(ii) (B) and (C) of this section. 

(6) Foam blanket-type fume suppressants. (i) During the initial performance test, the owner or operator of an affected 

source complying with the emission limitations in §63.342 through the use of a foam blanket in the electroplating or 

anodizing bath shall determine the outlet chromium concentration using the procedures in §63.344(c), and shall 

establish as the site-specific operating parameter the thickness of the foam blanket, setting the minimum thickness 

that corresponds to compliance with the applicable emission limitation. In lieu of establishing the minimum foam 

blanket thickness during the performance test, the owner or operator may accept 2.54 centimeters (1 inch) as the 

minimum foam blanket thickness that corresponds to compliance with the applicable emission limitation. All foam 

blanket measurements must be taken in close proximity to the workpiece or cathode area in the plating tank(s). 

(ii) On and after the date on which the initial performance test is required to be completed under §63.7, except for 

hard chromium electroplaters and chromium anodizing operations in California which have until January 25, 1998, the 

owner or operator of an affected source shall monitor the foam blanket thickness of the electroplating or anodizing 

bath. Operation of the affected source at a foam blanket thickness less than the value established during the 

performance test, or less than 2.54 cm (1 inch) if the owner or operator is using this value in accordance with 

paragraph (c)(6)(i) of this section, shall constitute noncompliance with the standards. The foam blanket thickness 

shall be measured according to the following schedule: 

(A) The foam blanket thickness shall be measured once every 1 hour of tank operation. 

(B) The time between monitoring can be increased if there have been no exceedances. The foam blanket thickness 

shall be measured once every hour of tank operation for the first 40 hours of tank operation after the compliance 

date. Once there are no exceedances for 40 hours of tank operation, foam blanket thickness measurement may be 

conducted once every 4 hours of tank operation. Once there are no exceedances during 40 hours of tank operation, 

foam blanket thickness measurement may be conducted once every 8 hours of tank operation on an ongoing basis, 

until an exceedance occurs. The minimum frequency of monitoring allowed by this subpart is once per 8 hours of tank 

operation. 

(C) Once an exceedance occurs as indicated through foam blanket thickness monitoring, the original monitoring 

schedule of once every hour must be resumed. A subsequent decrease in frequency shall follow the schedule laid out 

in paragraph (c)(6)(ii)(B) of this section. For example, if an owner or operator had been monitoring an affected source 

once every 8 hours and an exceedance occurs, subsequent monitoring would take place once every hour of tank 

operation. Once an exceedance does not occur for 40 hours of tank operation, monitoring can occur once every 4 

hours of tank operation. Once an exceedance does not occur for 40 hours of tank operation on this schedule, 

monitoring can occur once every 8 hours of tank operation. 

(iii) Once a bath solution is drained from the affected tank and a new solution added, the original monitoring schedule 

of once every hour must be resumed, with a decrease in monitoring frequency allowed following the procedures of 

paragraphs (c)(6)(ii) (B) and (C) of this section. 

(7) Fume suppressant/add-on control device. (i) If the owner or operator of an affected source uses both a fume 

suppressant and add-on control device and both are needed to comply with the applicable emission limit, monitoring 

requirements as identified in paragraphs (c) (1) through (6) of this section, and the work practice standards of Table 1 

of §63.342, apply for each of the control techniques used. 

(ii) If the owner or operator of an affected source uses both a fume suppressant and add-on control device, but only 

one of these techniques is needed to comply with the applicable emission limit, monitoring requirements as identified 

in paragraphs (c) (1) through (6) of this section, and work practice standards of Table 1 of §63.342, apply only for the 

control technique used to achieve compliance. 
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(8) Use of an alternative monitoring method. (i) Requests and approvals of alternative monitoring methods shall be 

considered in accordance with §63.8(f)(1), (f)(3), (f)(4), and (f)(5). 

(ii) After receipt and consideration of an application for an alternative monitoring method, the Administrator may 

approve alternatives to any monitoring methods or procedures of this subpart including, but not limited to, the 

following: 

(A) Alternative monitoring requirements when installation or use of monitoring devices specified in this subpart would 

not provide accurate measurements due to interferences caused by substances within the effluent gases; or 

(B) Alternative locations for installing monitoring devices when the owner or operator can demonstrate that installation 

at alternate locations will enable accurate and representative measurements. 

(d) An owner or operator who uses an air pollution control device not listed in this section shall submit a description of 

the device, test results collected in accordance with §63.344(c) verifying the performance of the device for reducing 

chromium emissions to the atmosphere to the level required by this subpart, a copy of the operation and maintenance 

plan referenced in §63.342(f) including operation and maintenance practices, and appropriate operating parameters 

that will be monitored to establish continuous compliance with the standards. The monitoring plan submitted 

identifying the continuous compliance monitoring is subject to the Administrator's approval. 

[60 FR 4963, Jan. 25, 1995; 60 FR 33122, June 27, 1995, as amended at 62 FR 42920, Aug. 11, 1997; 68 FR 37347, 

June 23, 2003; 69 FR 42895, July 19, 2004] 

§ 63.344 Performance test requirements and test methods.

(a) Performance test requirements. Performance tests shall be conducted using the test methods and procedures in 

this section and §63.7. Performance test results shall be documented in complete test reports that contain the 

information required by paragraphs (a)(1) through (a)(9) of this section. The test plan to be followed shall be made 

available to the Administrator prior to the testing, if requested. 

(1) A brief process description; 

(2) Sampling location description(s); 

(3) A description of sampling and analytical procedures and any modifications to standard procedures; 

(4) Test results; 

(5) Quality assurance procedures and results; 

(6) Records of operating conditions during the test, preparation of standards, and calibration procedures; 

(7) Raw data sheets for field sampling and field and laboratory analyses; 

(8) Documentation of calculations; and 

(9) Any other information required by the test method. 

(b)(1) If the owner or operator of an affected source conducts performance testing at startup to obtain an operating 

permit in the State in which the affected source is located, the results of such testing may be used to demonstrate 

compliance with this subpart if: 

(i) The test methods and procedures identified in paragraph (c) of this section were used during the performance test; 

(ii) The performance test was conducted under representative operating conditions for the source; 
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(iii) The performance test report contains the elements required by paragraph (a) of this section; and 

(iv) The owner or operator of the affected source for which the performance test was conducted has sufficient data to 

establish the operating parameter value(s) that correspond to compliance with the standards, as required for 

continuous compliance monitoring under §63.343(c). 

(2) The results of tests conducted prior to December 1991 in which Method 306A, appendix A of this part, was used 

to demonstrate the performance of a control technique are not acceptable. 

(c) Test methods. Each owner or operator subject to the provisions of this subpart and required by §63.343(b) to 

conduct an initial performance test shall use the test methods identified in this section to demonstrate compliance 

with the standards in §63.342. 

(1) Method 306 or Method 306A, “Determination of Chromium Emissions From Decorative and Hard Chromium 

Electroplating and Anodizing Operations,” appendix A of this part shall be used to determine the chromium 

concentration from hard or decorative chromium electroplating tanks or chromium anodizing tanks. The sampling time 

and sample volume for each run of Methods 306 and 306A, appendix A of this part shall be at least 120 minutes and 

1.70 dscm (60 dscf), respectively. Methods 306 and 306A, appendix A of this part allow the measurement of either 

total chromium or hexavalent chromium emissions. For the purposes of this standard, sources using chromic acid 

baths can demonstrate compliance with the emission limits of §63.342 by measuring either total chromium or 

hexavalent chromium. Hence, the hexavalent chromium concentration measured by these methods is equal to the 

total chromium concentration for the affected operations. 

(2) The California Air Resources Board (CARB) Method 425 (which is available by contacting the California Air 

Resources Board, 1102 Q Street, Sacramento, California 95814) may be used to determine the chromium 

concentration from hard and decorative chromium electroplating tanks and chromium anodizing tanks if the following 

conditions are met: 

(i) If a colorimetric analysis method is used, the sampling time and volume shall be sufficient to result in 33 to 66 

micrograms of catch in the sampling train. 

(ii) If Atomic Absorption Graphite Furnace (AAGF) or Ion Chromatography with a Post-column Reactor (ICPCR) 

analyses were used, the sampling time and volume should be sufficient to result in a sample catch that is 5 to 10 

times the minimum detection limit of the analytical method (i.e., 1.0 microgram per liter of sample for AAGF and 0.5 

microgram per liter of sample for ICPCR). 

(iii) In the case of either paragraph (c)(2) (i) or (ii) of this section, a minimum of 3 separate runs must be conducted. 

The other requirements of §63.7 that apply to affected sources, as indicated in Table 1 of this subpart, must also be 

met. 

(3) Method 306B, “Surface Tension Measurement and Recordkeeping for Tanks Used at Decorative Chromium 

Electroplating and Anodizing Facilities,” appendix A of this part shall be used to measure the surface tension of 

electroplating and anodizing baths. 

(4) Alternate test methods may also be used if the method has been validated using Method 301, appendix A of this 

part and if approved by the Administrator. Procedures for requesting and obtaining approval are contained in §63.7(f). 

(d) Establishing site-specific operating parameter values. (1) Each owner or operator required to establish sitespecific operating parameters shall follow the procedures in this section. 

(2) All monitoring equipment shall be installed such that representative measurements of emissions or process 

parameters from the affected source are obtained. For monitoring equipment purchased from a vendor, verification of 

the operational status of the monitoring equipment shall include execution of the manufacturer's written specifications 

or recommendations for installation, operation, and calibration of the system. 

(i) Specifications for differential pressure measurement devices used to measure velocity pressure shall be in 

accordance with section 2.2 of Method 2 (40 CFR part 60, appendix A). 
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(ii) Specification for differential pressure measurement devices used to measure pressure drop across a control 

system shall be in accordance with manufacturer's accuracy specifications. 

(3) The surface tension of electroplating and anodizing baths shall be measured using Method 306B, “Surface 

Tension Measurement and Recordkeeping for Tanks used at Decorative Chromium Electroplating and Anodizing 

Facilities,” appendix A of this part. This method should also be followed when wetting agent type or combination 

wetting agent/foam blanket type fume suppressants are used to control chromium emissions from a hard chromium 

electroplating tank and surface tension measurement is conducted to demonstrate continuous compliance. 

(4) The owner or operator of a source required to measure the velocity pressure at the inlet to an add-on air pollution 

control device in accordance with §63.343(c)(2), shall establish the site-specific velocity pressure as follows: 

(i) Locate a velocity traverse port in a section of straight duct that connects the hooding on the plating tank or tanks 

with the control device. The port shall be located as close to the control system as possible, and shall be placed a 

minimum of 2 duct diameters downstream and 0.5 diameter upstream of any flow disturbance such as a bend, 

expansion, or contraction (see Method 1, 40 CFR part 60, appendix A). If 2.5 diameters of straight duct work does not 

exist, locate the port 0.8 of the duct diameter downstream and 0.2 of the duct diameter upstream from any flow 

disturbance. 

(ii) A 12-point velocity traverse of the duct to the control device shall be conducted along a single axis according to 

Method 2 (40 CFR part 60, appendix A) using an S-type pitot tube; measurement of the barometric pressure and duct 

temperature at each traverse point is not required, but is suggested. Mark the S-type pitot tube as specified in Method 

1 (40 CFR part 60, appendix A) with 12 points. Measure the velocity pressure (∆ p) values for the velocity points and 

record. Determine the square root of the individual velocity point ∆ p values and average. The point with the square 

root value that comes closest to the average square root value is the point of average velocity. The ∆ p value 

measured for this point during the performance test will be used as the reference for future monitoring. 

(5) The owner or operator of a source required to measure the pressure drop across the add-on air pollution control 

device in accordance with §63.343(c) (1) through (4) may establish the pressure drop in accordance with the 

following guidelines: 

(i) Pressure taps shall be installed at any of the following locations: 

(A) At the inlet and outlet of the control system. The inlet tap should be installed in the ductwork just prior to the 

control device and the corresponding outlet pressure tap should be installed on the outlet side of the control device 

prior to the blower or on the downstream side of the blower; 

(B) On each side of the packed bed within the control system or on each side of each mesh pad within the control 

system; or 

(C) On the front side of the first mesh pad and back side of the last mesh pad within the control system. 

(ii) Pressure taps shall be sited at locations that are: 

(A) Free from pluggage as possible and away from any flow disturbances such as cyclonic demisters. 

(B) Situated such that no air infiltration at measurement site will occur that could bias the measurement. 

(iii) Pressure taps shall be constructed of either polyethylene, polybutylene, or other nonreactive materials. 

(iv) Nonreactive plastic tubing shall be used to connect the pressure taps to the device used to measure pressure 

drop. 

(v) Any of the following pressure gauges can be used to monitor pressure drop: a magnehelic gauge, an inclined 

manometer, or a “U” tube manometer. 
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(vi) Prior to connecting any pressure lines to the pressure gauge(s), each gauge should be zeroed. No calibration of 

the pressure gauges is required. 

(e) Special compliance provisions for multiple sources controlled by a common add-on air pollution control device. (1) 

This section identifies procedures for measuring the outlet chromium concentration from an add-on air pollution 

control device that is used to control multiple sources that may or may not include sources not affected by this 

subpart. 

(2) When multiple affected sources performing the same type of operation (e.g., all are performing hard chromium 

electroplating), and subject to the same emission limitation, are controlled with an add-on air pollution control device 

that is not controlling emissions from any other type of affected operation or from any nonaffected sources, the 

applicable emission limitation identified in §63.342 must be met at the outlet of the add-on air pollution control device. 

(3) When multiple affected sources performing the same type of operation and subject to the same emission limitation 

are controlled with a common add-on air pollution control device that is also controlling emissions from sources not 

affected by these standards, the following procedures should be followed to determine compliance with the applicable 

emission limitation in §63.342: 

(i) Calculate the cross-sectional area of each inlet duct (i.e., uptakes from each hood) including those not affected by 

the standard. 

(ii) Determine the total sample time per test run by dividing the total inlet area from all tanks connected to the control 

system by the total inlet area for all ducts associated with affected sources, and then multiply this number by 2 hours. 

The calculated time is the minimum sample time required per test run. 

(iii) Perform Method 306 testing and calculate an outlet mass emission rate. 

(iv) Determine the total ventilation rate from the affected sources by using equation 1: 

where VRtotis the average total ventilation rate in dscm/min for the three test runs as determined at the 

outlet by means of the Method 306 testing; IDAiis the total inlet area for all ducts associated with affected 

sources; IAtotalis the sum of all inlet duct areas from both affected and nonaffected sources; and VRinletis 

the total ventilation rate from all inlet ducts associated with affected sources.

(v) Establish the allowable mass emission rate of the system (AMRsys) in milligrams of total chromium per hour 

(mg/hr) using equation 2: 

where Σ VRinletis the total ventilation rate in dscm/min from the affected sources, and EL is the applicable 

emission limitation from §63.342 in mg/dscm. The allowable mass emission rate (AMRsys) calculated from 

equation 2 should be equal to or more than the outlet three-run average mass emission rate determined 

from Method 306 testing in order for the source to be in compliance with the standard.

(4) When multiple affected sources performing different types of operations (e.g., hard chromium electroplating, 

decorative chromium electroplating, or chromium anodizing) are controlled by a common add-on air pollution control 

device that may or may not also be controlling emissions from sources not affected by these standards, or if the 

affected sources controlled by the common add-on air pollution control device perform the same operation but are 

subject to different emission limitations (e.g., because one is a new hard chromium plating tank and one is an existing 

small, hard chromium plating tank), the following procedures should be followed to determine compliance with the 

applicable emission limitation in §63.342: 
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(i) Follow the steps outlined in paragraphs (e)(3)(i) through (e)(3)(iii) of this section. 

(ii) Determine the total ventilation rate for each type of affected source using equation 3: 

where VRtotis the average total ventilation rate in dscm/min for the three test runs as determined at the 

outlet by means of the Method 306 testing; IDAi,ais the total inlet duct area for all ducts conveying chromic 

acid from each type of affected source performing the same operation, or each type of affected source 

subject to the same emission limitation; IAtotalis the sum of all duct areas from both affected and 

nonaffected sources; and VRinlet,ais the total ventilation rate from all inlet ducts conveying chromic acid 

from each type of affected source performing the same operation, or each type of affected source subject 

to the same emission limitation.

(iii) Establish the allowable mass emission rate in mg/hr for each type of affected source that is controlled by the addon air pollution control device using equation 4, 5, 6, or 7 as appropriate: 

VRhc1× ELhc1× 60 minutes/hour = AMRhc1 (4) 

VRhc2× ELhc2× 60 minutes/hour = AMRhc2 (5) 

VRdc× ELdc× 60 minutes/hour = AMRdc (6) 

VRca× ELca× 60 minutes/hour = AMRca (7) 

where “hc” applies to the total of ventilation rates for all hard chromium electroplating tanks subject to the 

same emission limitation, “dc” applies to the total of ventilation rates for the decorative chromium 

electroplating tanks, “ca” applies to the total of ventilation rates for the chromium anodizing tanks, and EL 

is the applicable emission limitation from §63.342 in mg/dscm. There are two equations for hard 

chromium electroplating tanks because different emission limitations may apply (e.g., a new tank versus 

an existing, small tank). 

(iv) Establish the allowable mass emission rate (AMR) in mg/hr for the system using equation 8, including each type 

of affected source as appropriate: 

AMRhc1+ AMRhc2+ AMRdc+ AMRca= AMRsys (8) 

The allowable mass emission rate calculated from equation 8 should be equal to or more than the outlet three-run 

average mass emission rate determined from Method 306 testing in order for the source to be in compliance with the 

standards. 

(5) Each owner or operator that uses the special compliance provisions of this paragraph to demonstrate compliance 

with the emission limitations of §63.342 shall submit the measurements and calculations to support these compliance 

methods with the notification of compliance status required by §63.347(e). 

(6) Each owner or operator that uses the special compliance provisions of this section to demonstrate compliance 

with the emission limitations of §63.342 shall repeat these procedures if a tank is added or removed from the control 

system regardless of whether that tank is a nonaffected source. If the new nonaffected tank replaces an existing 

nonaffected tank of the same size and is connected to the control system through the same size inlet duct then this 

procedure does not have to be repeated. 
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(f) Compliance provisions for the mass rate emission standard for enclosed hard chromium electroplating tanks. (1) 

This section identifies procedures for calculating the maximum allowable mass emission rate for owners or operators 

of affected sources who choose to meet the mass emission rate standard in §63.342(c)(2)(iv) or (v). 

(i)(A) The owner or operator of an enclosed hard chromium electroplating tank that is an affected source other than 

an existing affected source located at a small hard chromium electroplating facility who chooses to meet the mass 

emission rate standard in §63.342(c)(2)(iv) shall determine compliance by not allowing the mass rate of total 

chromium in the exhaust gas stream discharged to the atmosphere to exceed the maximum allowable mass emission 

rate calculated using equation 9: 

MAMER = ETSA × K × 0.015 mg/dscm (9) 

Where: 

MAMER = the alternative emission rate for enclosed hard chromium electroplating tanks in mg/hr. 

ETSA = the hard chromium electroplating tank surface area in square feet(ft2

 ). 

K = a conversion factor, 425 dscm/(ft2

 × hr). 

(B) Compliance with the alternative mass emission limit is demonstrated if the three-run average mass emission rate 

determined from Method 306 testing is less than or equal to the maximum allowable mass emission rate calculated 

from equation 9. 

(ii)(A) The owner or operator of an enclosed hard chromium electroplating tank that is an existing affected source 

located at a small hard chromium electroplating facility who chooses to meet the mass emission rate standard in 

§63.342(c)(2)(v) shall determine compliance by not allowing the mass rate of total chromium in the exhaust gas 

stream discharged to the atmosphere to exceed the maximum allowable mass emission rate calculated using 

equation 10: 

MAMER = ETSA × K × 0.03 mg/dscm. (10) 

(B) Compliance with the alternative mass emission limit is demonstrated if the three-run average mass emission rate 

determined from testing using Method 306 of appendix A to part 63 is less than or equal to the maximum allowable 

mass emission rate calculated from equation 10. 

[60 FR 4963, Jan. 25, 1995, as amended at 61 FR 27787, June 3, 1996; 69 FR 42896, July 19, 2004] 

§ 63.345 Provisions for new and reconstructed sources.

(a) This section identifies the preconstruction review requirements for new and reconstructed affected sources that 

are subject to, or become subject to, this subpart. 

(b) New or reconstructed affected sources. The owner or operator of a new or reconstructed affected source is 

subject to §63.5(a), (b)(1), (b)(5), (b)(6), and (f)(1), as well as the provisions of this paragraph. 

(1) After January 25, 1995, whether or not an approved permit program is effective in the State in which an affected 

source is (or would be) located, no person may construct a new affected source or reconstruct an affected source 

subject to this subpart, or reconstruct a source such that it becomes an affected source subject to this subpart, 

without submitting a notification of construction or reconstruction to the Administrator. The notification shall contain 

the information identified in paragraphs (b) (2) and (3) of this section, as appropriate. 

(2) The notification of construction or reconstruction required under paragraph (b)(1) of this section shall include: 

(i) The owner or operator's name, title, and address; 
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(ii) The address (i.e., physical location) or proposed address of the affected source if different from the owner's or 

operator's; 

(iii) A notification of intention to construct a new affected source or make any physical or operational changes to an 

affected source that may meet or has been determined to meet the criteria for a reconstruction as defined in §63.2; 

(iv) An identification of subpart N of this part as the basis for the notification; 

(v) The expected commencement and completion dates of the construction or reconstruction; 

(vi) The anticipated date of (initial) startup of the affected source; 

(vii) The type of process operation to be performed (hard or decorative chromium electroplating, or chromium 

anodizing); 

(viii) A description of the air pollution control technique to be used to control emissions from the affected source, such 

as preliminary design drawings and design capacity if an add-on air pollution control device is used; and 

(ix) An estimate of emissions from the source based on engineering calculations and vendor information on control 

device efficiency, expressed in units consistent with the emission limits of this subpart. Calculations of emission 

estimates should be in sufficient detail to permit assessment of the validity of the calculations. 

(3) If a reconstruction is to occur, the notification required under paragraph (b)(1) of this section shall include the 

following in addition to the information required in paragraph (b)(2) of this section: 

(i) A brief description of the affected source and the components to be replaced; 

(ii) A brief description of the present and proposed emission control technique, including the information required by 

paragraphs (b)(2) (viii) and (ix) of this section; 

(iii) An estimate of the fixed capital cost of the replacements and of constructing a comparable entirely new source; 

(iv) The estimated life of the affected source after the replacements; and 

(v) A discussion of any economic or technical limitations the source may have in complying with relevant standards or 

other requirements after the proposed replacements. The discussion shall be sufficiently detailed to demonstrate to 

the Administrator's satisfaction that the technical or economic limitations affect the source's ability to comply with the 

relevant standard and how they do so. 

(vi) If in the notification of reconstruction, the owner or operator designates the affected source as a reconstructed 

source and declares that there are no economic or technical limitations to prevent the source from complying with all 

relevant standards or requirements, the owner or operator need not submit the information required in paragraphs 

(b)(3) (iii) through (v) of this section. 

(4) The owner or operator of a new or reconstructed affected source that submits a notification in accordance with 

paragraphs (b) (1) through (3) of this section is not subject to approval by the Administrator. Construction or 

reconstruction is subject only to notification and can begin upon submission of a complete notification. 

(5) Submittal timeframes. After January 25, 1995, whether or not an approved permit program is effective in the State 

in which an affected source is (or would be) located, an owner or operator of a new or reconstructed affected source 

shall submit the notification of construction or reconstruction required by paragraph (b)(1) of this section according to 

the following schedule: 

(i) If construction or reconstruction commences after January 25, 1995, the notification shall be submitted as soon as 

practicable before the construction or reconstruction is planned to commence. 
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(ii) If the construction or reconstruction had commenced and initial startup had not occurred before January 25, 1995, 

the notification shall be submitted as soon as practicable before startup but no later than 60 days after January 25, 

1995. 

§ 63.346 Recordkeeping requirements.

(a) The owner or operator of each affected source subject to these standards shall fulfill all recordkeeping 

requirements outlined in this section and in the General Provisions to 40 CFR part 63, according to the applicability of 

subpart A of this part as identified in Table 1 of this subpart. 

(b) The owner or operator of an affected source subject to the provisions of this subpart shall maintain the following 

records for such source: 

(1) Inspection records for the add-on air pollution control device, if such a device is used, and monitoring equipment, 

to document that the inspection and maintenance required by the work practice standards of §63.342(f) and Table 1 

of §63.342 have taken place. The record can take the form of a checklist and should identify the device inspected, the 

date of inspection, a brief description of the working condition of the device during the inspection, and any actions 

taken to correct deficiencies found during the inspection. 

(2) Records of all maintenance performed on the affected source, the add-on air pollution control device, and 

monitoring equipment; 

(3) Records of the occurrence, duration, and cause (if known) of each malfunction of process, add-on air pollution 

control, and monitoring equipment; 

(4) Records of actions taken during periods of malfunction when such actions are inconsistent with the operation and 

maintenance plan; 

(5) Other records, which may take the form of checklists, necessary to demonstrate consistency with the provisions of 

the operation and maintenance plan required by §63.342(f)(3); 

(6) Test reports documenting results of all performance tests; 

(7) All measurements as may be necessary to determine the conditions of performance tests, including 

measurements necessary to determine compliance with the special compliance procedures of §63.344(e); 

(8) Records of monitoring data required by §63.343(c) that are used to demonstrate compliance with the standard 

including the date and time the data are collected; 

(9) The specific identification (i.e., the date and time of commencement and completion) of each period of excess 

emissions, as indicated by monitoring data, that occurs during malfunction of the process, add-on air pollution control, 

or monitoring equipment; 

(10) The specific identification (i.e., the date and time of commencement and completion) of each period of excess 

emissions, as indicated by monitoring data, that occurs during periods other than malfunction of the process, add-on 

air pollution control, or monitoring equipment; 

(11) The total process operating time of the affected source during the reporting period; 

(12) Records of the actual cumulative rectifier capacity of hard chromium electroplating tanks at a facility expended 

during each month of the reporting period, and the total capacity expended to date for a reporting period, if the owner 

or operator is using the actual cumulative rectifier capacity to determine facility size in accordance with §63.342(c)(2); 

(13) For sources using fume suppressants to comply with the standards, records of the date and time that fume 

suppressants are added to the electroplating or anodizing bath; 
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(14) For sources complying with §63.342(e), records of the bath components purchased, with the wetting agent 

clearly identified as a bath constituent contained in one of the components; 

(15) Any information demonstrating whether a source is meeting the requirements for a waiver of recordkeeping or 

reporting requirements, if the source has been granted a waiver under §63.10(f); and 

(16) All documentation supporting the notifications and reports required by §63.9, §63.10, and §63.347. 

(c) All records shall be maintained for a period of 5 years in accordance with §63.10(b)(1). 

§ 63.347 Reporting requirements.

(a) The owner or operator of each affected source subject to these standards shall fulfill all reporting requirements 

outlined in this section and in the General Provisions to 40 CFR part 63, according to the applicability of subpart A as 

identified in Table 1 of this subpart. These reports shall be made to the Administrator at the appropriate address as 

identified in §63.13 or to the delegated State authority. 

(1) Reports required by subpart A of this part and this section may be sent by U.S. mail, fax, or by another courier. 

(i) Submittals sent by U.S. mail shall be postmarked on or before the specified date. 

(ii) Submittals sent by other methods shall be received by the Administrator on or before the specified date. 

(2) If acceptable to both the Administrator and the owner or operator of an affected source, reports may be submitted 

on electronic media. 

(b) The reporting requirements of this section apply to the owner or operator of an affected source when such source 

becomes subject to the provisions of this subpart. 

(c) Initial notifications. (1) The owner or operator of an affected source that has an initial startup before January 25, 

1995, shall notify the Administrator in writing that the source is subject to this subpart. The notification shall be 

submitted no later than 180 calendar days after January 25, 1995, and shall contain the following information: 

(i) The name, title, and address of the owner or operator; 

(ii) The address (i.e., physical location) of each affected source; 

(iii) A statement that subpart N of this part is the basis for this notification; 

(iv) Identification of the applicable emission limitation and compliance date for each affected source; 

(v) A brief description of each affected source, including the type of process operation performed; 

(vi) For sources performing hard chromium electroplating, the maximum potential cumulative potential rectifier 

capacity; 

(vii) For sources performing hard chromium electroplating, a statement of whether the affected source(s) is located at 

a small or a large, hard chromium electroplating facility and whether this will be demonstrated through actual or 

maximum potential cumulative rectifier capacity; 

(viii) For sources performing hard chromium electroplating, a statement of whether the owner or operator of an 

affected source(s) will limit the maximum potential cumulative rectifier capacity in accordance with §63.342(c)(2) such 

that the hard chromium electroplating facility is considered small; and 
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(ix) A statement of whether the affected source is located at a major source or an area source as defined in §63.2. 

(2) The owner or operator of a new or reconstructed affected source that has an initial startup after January 25, 1995 

shall submit an initial notification (in addition to the notification of construction or reconstruction required by 

§63.345(b) as follows: 

(i) A notification of the date when construction or reconstruction was commenced, shall be submitted simultaneously 

with the notification of construction or reconstruction, if construction or reconstruction was commenced before 

January 25, 1995; 

(ii) A notification of the date when construction or reconstruction was commenced, shall be submitted no later than 30 

calendar days after such date, if construction or reconstruction was commenced after January 25, 1995; and 

(iii) A notification of the actual date of startup of the source shall be submitted within 30 calendar days after such 

date. 

(d) Notification of performance test. (1) The owner or operator of an affected source shall notify the Administrator in 

writing of his or her intention to conduct a performance test at least 60 calendar days before the test is scheduled to 

begin to allow the Administrator to have an observer present during the test. Observation of the performance test by 

the Administrator is optional. 

(2) In the event the owner or operator is unable to conduct the performance test as scheduled, the provisions of 

§63.7(b)(2) apply. 

(e) Notification of compliance status. (1) A notification of compliance status is required each time that an affected 

source becomes subject to the requirements of this subpart. 

(2) If the State in which the source is located has not been delegated the authority to implement the rule, each time a 

notification of compliance status is required under this part, the owner or operator of an affected source shall submit 

to the Administrator a notification of compliance status, signed by the responsible official (as defined in §63.2) who 

shall certify its accuracy, attesting to whether the affected source has complied with this subpart. If the State has 

been delegated the authority, the notification of compliance status shall be submitted to the appropriate authority. The 

notification shall list for each affected source: 

(i) The applicable emission limitation and the methods that were used to determine compliance with this limitation; 

(ii) If a performance test is required by this subpart, the test report documenting the results of the performance test, 

which contains the elements required by §63.344(a), including measurements and calculations to support the special 

compliance provisions of §63.344(e) if these are being followed; 

(iii) The type and quantity of hazardous air pollutants emitted by the source reported in mg/dscm or mg/hr if the 

source is using the special provisions of §63.344(e) to comply with the standards. (If the owner or operator is subject 

to the construction and reconstruction provisions of §63.345 and had previously submitted emission estimates, the 

owner or operator shall state that this report corrects or verifies the previous estimate.) For sources not required to 

conduct a performance test in accordance with §63.343(b), the surface tension measurement may fulfill this 

requirement; 

(iv) For each monitored parameter for which a compliant value is to be established under §63.343(c), the specific 

operating parameter value, or range of values, that corresponds to compliance with the applicable emission limit; 

(v) The methods that will be used to determine continuous compliance, including a description of monitoring and 

reporting requirements, if methods differ from those identified in this subpart; 

(vi) A description of the air pollution control technique for each emission point; 

(vii) A statement that the owner or operator has completed and has on file the operation and maintenance plan as 

required by the work practice standards in §63.342(f); 
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(viii) If the owner or operator is determining facility size based on actual cumulative rectifier capacity in accordance 

with §63.342(c)(2), records to support that the facility is small. For existing sources, records from any 12-month 

period preceding the compliance date shall be used or a description of how operations will change to meet a small 

designation shall be provided. For new sources, records of projected rectifier capacity for the first 12-month period of 

tank operation shall be used; 

(ix) A statement by the owner or operator of the affected source as to whether the source has complied with the 

provisions of this subpart. 

(3) For sources required to conduct a performance test by §63.343(b), the notification of compliance status shall be 

submitted to the Administrator no later than 90 calendar days following completion of the compliance demonstration 

required by §63.7 and §63.343(b). 

(4) For sources that are not required to complete a performance test in accordance with §63.343(b), the notification of 

compliance status shall be submitted to the Administrator no later than 30 days after the compliance date specified in 

§63.343(a), except the date on which sources in California shall monitor the surface tension of the anodizing bath is 

extended to January 25, 1998. 

(f) Reports of performance test results. (1) If the State in which the source is located has not been delegated the 

authority to implement the rule, the owner or operator of an affected source shall report to the Administrator the 

results of any performance test conducted as required by §63.7 or §63.343(b). If the State has been delegated the 

authority, the owner or operator of an affected source should report performance test results to the appropriate 

authority. 

(2) Reports of performance test results shall be submitted no later than 90 days following the completion of the 

performance test, and shall be submitted as part of the notification of compliance status required by paragraph (e) of 

this section. 

(g) Ongoing compliance status reports for major sources. (1) The owner or operator of an affected source that is 

located at a major source site shall submit a summary report to the Administrator to document the ongoing 

compliance status of the affected source. The report shall contain the information identified in paragraph (g)(3) of this 

section, and shall be submitted semiannually except when: 

(i) The Administrator determines on a case-by-case basis that more frequent reporting is necessary to accurately 

assess the compliance status of the source; or 

(ii) The monitoring data collected by the owner or operator of the affected source in accordance with §63.343(c) show 

that the emission limit has been exceeded, in which case quarterly reports shall be submitted. Once an owner or 

operator of an affected source reports an exceedance, ongoing compliance status reports shall be submitted 

quarterly until a request to reduce reporting frequency under paragraph (g)(2) of this section is approved. 

(2) Request to reduce frequency of ongoing compliance status reports. (i) An owner or operator who is required to 

submit ongoing compliance status reports on a quarterly (or more frequent basis) may reduce the frequency of 

reporting to semiannual if all of the following conditions are met: 

(A) For 1 full year (e.g., 4 quarterly or 12 monthly reporting periods), the ongoing compliance status reports 

demonstrate that the affected source is in compliance with the relevant emission limit; 

(B) The owner or operator continues to comply with all applicable recordkeeping and monitoring requirements of 

subpart A of this part and this subpart; and 

(C) The Administrator does not object to a reduced reporting frequency for the affected source, as provided in 

paragraphs (g)(2) (ii) and (iii) of this section. 

(ii) The frequency of submitting ongoing compliance status reports may be reduced only after the owner or operator 

notifies the Administrator in writing of his or her intention to make such a change, and the Administrator does not 

object to the intended change. In deciding whether to approve a reduced reporting frequency, the Administrator may 
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review information concerning the source's entire previous performance history during the 5-year recordkeeping 

period prior to the intended change, or the recordkeeping period since the source's compliance date, whichever is 

shorter. Records subject to review may include performance test results, monitoring data, and evaluations of an 

owner or operator's conformance with emission limitations and work practice standards. Such information may be 

used by the Administrator to make a judgment about the source's potential for noncompliance in the future. If the 

Administrator disapproves the owner or operator's request to reduce reporting frequency, the Administrator will notify 

the owner or operator in writing within 45 days after receiving notice of the owner or operator's intention. The 

notification from the Administrator to the owner or operator will specify the grounds on which the disapproval is 

based. In the absence of a notice of disapproval within 45 days, approval is automatically granted. 

(iii) As soon as the monitoring data required by §63.343(c) show that the source is not in compliance with the relevant 

emission limit, the frequency of reporting shall revert to quarterly, and the owner shall state this exceedance in the 

ongoing compliance status report for the next reporting period. After demonstrating ongoing compliance with the 

relevant emission limit for another full year, the owner or operator may again request approval from the Administrator 

to reduce the reporting frequency as allowed by paragraph (g)(2) of this section. 

(3) Contents of ongoing compliance status reports. The owner or operator of an affected source for which compliance 

monitoring is required in accordance with §63.343(c) shall prepare a summary report to document the ongoing 

compliance status of the source. The report must contain the following information: 

(i) The company name and address of the affected source; 

(ii) An identification of the operating parameter that is monitored for compliance determination, as required by 

§63.343(c); 

(iii) The relevant emission limitation for the affected source, and the operating parameter value, or range of values, 

that correspond to compliance with this emission limitation as specified in the notification of compliance status 

required by paragraph (e) of this section; 

(iv) The beginning and ending dates of the reporting period; 

(v) A description of the type of process performed in the affected source; 

(vi) The total operating time of the affected source during the reporting period; 

(vii) If the affected source is a hard chromium electroplating tank and the owner or operator is limiting the maximum 

cumulative rectifier capacity in accordance with §63.342(c)(2), the actual cumulative rectifier capacity expended 

during the reporting period, on a month-by-month basis; 

(viii) A summary of operating parameter values, including the total duration of excess emissions during the reporting 

period as indicated by those values, the total duration of excess emissions expressed as a percent of the total source 

operating time during that reporting period, and a breakdown of the total duration of excess emissions during the 

reporting period into those that are due to process upsets, control equipment malfunctions, other known causes, and 

unknown causes; 

(ix) A certification by a responsible official, as defined in §63.2, that the work practice standards in §63.342(f) were 

followed in accordance with the operation and maintenance plan for the source; 

(x) If the operation and maintenance plan required by §63.342(f)(3) was not followed, an explanation of the reasons 

for not following the provisions, an assessment of whether any excess emission and/or parameter monitoring 

exceedances are believed to have occurred, and a copy of the report(s) required by §63.342(f)(3)(iv) documenting 

that the operation and maintenance plan was not followed; 

(xi) A description of any changes in monitoring, processes, or controls since the last reporting period; 

(xii) The name, title, and signature of the responsible official who is certifying the accuracy of the report; and 
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(xiii) The date of the report. 

(4) When more than one monitoring device is used to comply with the continuous compliance monitoring required by 

§63.343(c), the owner or operator shall report the results as required for each monitoring device. However, when one 

monitoring device is used as a backup for the primary monitoring device, the owner or operator shall only report the 

results from the monitoring device used to meet the monitoring requirements of this subpart. If both devices are used 

to meet these requirements, then the owner or operator shall report the results from each monitoring device for the 

relevant compliance period. 

(h) Ongoing compliance status reports for area sources. The requirements of this paragraph do not alleviate affected 

area sources from complying with the requirements of State or Federal operating permit programs under 40 CFR part 

71. 

(1) The owner or operator of an affected source that is located at an area source site shall prepare a summary report 

to document the ongoing compliance status of the affected source. The report shall contain the information identified 

in paragraph (g)(3) of this section, shall be completed annually and retained on site, and made available to the 

Administrator upon request. The report shall be completed annually except as provided in paragraph (h)(2) of this 

section. 

(2) Reports of exceedances. (i) If both of the following conditions are met, semiannual reports shall be prepared and 

submitted to the Administrator: 

(A) The total duration of excess emissions (as indicated by the monitoring data collected by the owner or operator of 

the affected source in accordance with §63.343(c)) is 1 percent or greater of the total operating time for the reporting 

period; and 

(B) The total duration of malfunctions of the add-on air pollution control device and monitoring equipment is 5 percent 

or greater of the total operating time. 

(ii) Once an owner or operator of an affected source reports an exceedance as defined in paragraph (h)(2)(i) of this 

section, ongoing compliance status reports shall be submitted semiannually until a request to reduce reporting 

frequency under paragraph (h)(3) of this section is approved. 

(iii) The Administrator may determine on a case-by-case basis that the summary report shall be completed more 

frequently and submitted, or that the annual report shall be submitted instead of being retained on site, if these 

measures are necessary to accurately assess the compliance status of the source. 

(3) Request to reduce frequency of ongoing compliance status reports. (i) An owner or operator who is required to 

submit ongoing compliance status reports on a semiannual (or more frequent) basis, or is required to submit its 

annual report instead of retaining it on site, may reduce the frequency of reporting to annual and/or be allowed to 

maintain the annual report onsite if all of the following conditions are met: 

(A) For 1 full year (e.g., 2 semiannual or 4 quarterly reporting periods), the ongoing compliance status reports 

demonstrate that the affected source is in compliance with the relevant emission limit; 

(B) The owner or operator continues to comply with all applicable recordkeeping and monitoring requirements of 

subpart A of this part and this subpart; and 

(C) The Administrator does not object to a reduced reporting frequency for the affected source, as provided in 

paragraphs (h)(3) (ii) and (iii) of this section. 

(ii) The frequency of submitting ongoing compliance status reports may be reduced only after the owner or operator 

notifies the Administrator in writing of his or her intention to make such a change, and the Administrator does not 

object to the intended change. In deciding whether to approve a reduced reporting frequency, the Administrator may 

review information concerning the source's previous performance history during the 5-year recordkeeping period prior 

to the intended change, or the recordkeeping period since the source's compliance date, whichever is shorter. 

Records subject to review may include performance test results, monitoring data, and evaluations of an owner or 
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operator's conformance with emission limitations and work practice standards. Such information may be used by the 

Administrator to make a judgement about the source's potential for noncompliance in the future. If the Administrator 

disapproves the owner or operator's request to reduce reporting frequency, the Administrator will notify the owner or 

operator in writing within 45 days after receiving notice of the owner or operator's intention. The notification from the 

Administrator to the owner or operator will specify the grounds on which the disapproval is based. In the absence of a 

notice of disapproval within 45 days, approval is automatically granted. 

(iii) As soon as the monitoring data required by §63.343(c) show that the source is not in compliance with the relevant 

emission limit, the frequency of reporting shall revert to semiannual, and the owner shall state this exceedance in the 

ongoing compliance status report for the next reporting period. After demonstrating ongoing compliance with the 

relevant emission limit for another full year, the owner or operator may again request approval from the Administrator 

to reduce the reporting frequency as allowed by paragraph (h)(3) of this section. 

(i) Reports associated with trivalent chromium baths. The requirements of this paragraph do not alleviate affected 

sources from complying with the requirements of State or Federal operating permit programs under title V. Owners or 

operators complying with the provisions of §63.342(e) are not subject to paragraphs (a) through (h) of this section, 

but must instead submit the following reports: 

(1) Within 180 days after January 25, 1995, submit an initial notification that includes: 

(i) The same information as is required by paragraphs (c)(1) (i) through (v) of this section; and 

(ii) A statement that a trivalent chromium process that incorporates a wetting agent will be used to comply with 

§63.342(e); and 

(iii) The list of bath components that comprise the trivalent chromium bath, with the wetting agent clearly identified; 

and 

(2) Within 30 days of the compliance date specified in §63.343(a), a notification of compliance status that contains an 

update of the information submitted in accordance with paragraph (i)(1) of this section or a statement that the 

information is still accurate; and 

(3) Within 30 days of a change to the trivalent chromium electroplating process, a report that includes: 

(i) A description of the manner in which the process has been changed and the emission limitation, if any, now 

applicable to the affected source; 

(ii) If a different emission limitation applies, the applicable information required by paragraph (c)(1) of this section; and 

(iii) The notification and reporting requirements of paragraphs (d), (e), (f), (g), and (h) of this section, which shall be 

submitted in accordance with the schedules identified in those paragraphs. 

[60 FR 4963, Jan. 25, 1995, as amended at 61 FR 27787, June 3, 1996; 62 FR 4465, Jan. 30, 1997, 62 FR 42921, 

Aug. 11, 1997; 69 FR 42897, July 19, 2004] 

§ 63.348 Implementation and enforcement.

(a) This subpart can be implemented and enforced by the U.S. EPA, or a delegated authority such as the applicable 

State, local, or Tribal agency. If the U.S. EPA Administrator has delegated authority to a State, local, or Tribal agency, 

then that agency, in addition to the U.S. EPA, has the authority to implement and enforce this subpart. Contact the 

applicable U.S. EPA Regional Office to find out if implementation and enforcement of this subpart is delegated to a 

State, local, or Tribal agency. 

(b) In delegating implementation and enforcement authority of this subpart to a State, local, or Tribal agency under 

subpart E of this part, the authorities contained in paragraph (c) of this section are retained by the Administrator of 

U.S. EPA and cannot be transferred to the State, local, or Tribal agency. 
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(c) The authorities that cannot be delegated to State, local, or Tribal agencies are as specified in paragraphs (c)(1) 

through (4) of this section. 

(1) Approval of alternatives to the requirements in §§63.340, 63.342(a) through (e) and (g), and 63.343(a). 

(2) Approval of major alternatives to test methods under §63.7(e)(2)(ii) and (f), as defined in §63.90, and as required 

in this subpart. 

(3) Approval of major alternatives to monitoring under §63.8(f), as defined in §63.90, and as required in this subpart. 

(4) Approval of major alternatives to recordkeeping and reporting under §63.10(f), as defined in §63.90, and as 

required in this subpart. 

[68 FR 37347, June 23, 2003] 

Table 1 to Subpart N of Part 63—General Provisions Applicability to 

Subpart N

General 

provisions 

reference

Applies to 

subpart N Comment

63.1(a)(1) Yes Additional terms defined in §63.341; when overlap between subparts A and 

N occurs, subpart N takes precedence.

63.1(a)(2) Yes

63.1(a)(3) Yes

63.1(a)(4) Yes Subpart N clarifies the applicability of each paragraph in subpart A to 

sources subject to subpart N.

63.1(a)(6) Yes

63.1(a)(7) Yes

63.1(a)(8) Yes

63.1(a)(10) Yes

63.1(a)(11) Yes §63.347(a) of subpart N also allows report submissions via fax and on 

electronic media.

63.1(a)(12)–(14) Yes

63.1(b)(1) No §63.340 of subpart N specifies applicability.

63.1(b)(2) Yes

63.1(b)(3) No This provision in subpart A is being deleted. Also, all affected area and 

major sources are subject to subpart N; there are no exemptions.

63.1(c)(1) Yes Subpart N clarifies the applicability of each paragraph in subpart A to 

sources subject to subpart N.

63.1(c)(2) Yes §63.340(e) of Subpart N exempts area sources from the obligation to obtain 
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Title V operating permits.

63.1(c)(4) Yes

63.1(c)(5) No Subpart N clarifies that an area source that becomes a major source is 

subject to the requirements for major sources.

63.1(e) Yes

63.2 Yes Additional terms defined in §63.341; when overlap between subparts A and 

N occurs, subpart N takes precedence.

63.3 Yes Other units used in subpart N are defined in that subpart.

63.4 Yes

63.5(a) Yes Except replace the term “source” and “stationary source” in §63.5(a) (1) 

and (2) of subpart A with “affected sources.”

63.5(b)(1) Yes

63.5(b)(3) Yes Applies only to major affected sources.

63.5(b)(4) No Subpart N (§63.345) specifies requirements for the notification of 

construction or reconstruction for affected sources that are not major.

63.5(b)(5) Yes

63.5(b)(6) Yes

63.5(d)(1)(i) No §63.345(c)(5) of subpart N specifies when the application or notification 

shall be submitted.

63.5(d)(1)(ii) Yes Applies to major affected sources that are new or reconstructed.

63.5(d)(1)(iii) Yes Except information should be submitted with the Notification of Compliance 

Status required by §63.347(e) of subpart N.

63.5(d)(2) Yes Applies to major affected sources that are new or reconstructed except: (1) 

replace “source” in §63.5(d)(2) of subpart A with “affected source”; and (2) 

actual control efficiencies are submitted with the Notification of Compliance 

Status required by §63.347(e).

63.5(d)(3)–(4) Yes Applies to major affected sources that are new or reconstructed.

63.5(e) Yes Applies to major affected sources that are new or reconstructed.

63.5(f)(1) Yes Except replace “source” in §63.5(f)(1) of subpart A with “affected source.”

63.5(f)(2) No New or reconstructed affected sources shall submit the request for 

approval of construction or reconstruction under §63.5(f) of subpart A by 

the deadline specified in §63.345(c)(5) of subpart N.

63.6(a) Yes

63.6(b)(1)–(2) Yes Except replace “source” in §63.6(b)(1)–(2) of part A with “affected source.”

63.6(b)(3)–(4) Yes
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63.6(b)(5) Yes Except replace “source” in §63.6(b)(5) of subpart A with “affected source.”

63.6(b)(7) No Provisions for new area sources that become major sources are contained 

in §63.343(a)(4) of subpart N.

63.6(c)(1)–(2) Yes Except replace “source” in §63.6(c)(1)–(2) of subpart A with “affected 

source.”

63.6(c)(5) No Compliance provisions for existing area sources that become major 

sources are contained in §63.343(a)(3) of subpart N.

63.6(e) No §63.342(f) of subpart N contains work practice standards (operation and 

maintenance requirements) that override these provisions.

63.6(f)(1) No §63.342(b) of subpart N specifies when the standards apply.

63.6(f)(2)(i)–(ii) Yes

63.6(f)(2)(iii) No §63.344(b) of subpart N specifies instances in which previous performance 

test results for existing sources are acceptable.

63.6(f)(2)(iv) Yes

63.6(f)(2)(v) Yes

63.6(f)(3) Yes

63.6(g) Yes

63.6(h) No Subpart N does not contain any opacity or visible emission standards.

63.6(i)(1) Yes

63.6(i)(2) Yes Except replace “source” in §63.6(i)(2)(i) and (ii) of subpart A with “affected 

source.”

63.6(i)(3) Yes

63.6(i)(4)(i) No §63.343(a)(6) of subpart N specifies the procedures for obtaining an 

extension of compliance and the date by which such requests must be 

submitted.

63.6(i)(4)(ii) Yes

63.6(i)(5) Yes

63.6(i)(6)(i) Yes This paragraph only references “paragraph (i)(4) of this section” for 

compliance extension provisions. But, §63.343(a)(6) of subpart N also 

contains provisions for requesting a compliance extension.

63.6(i)(6)(ii) Yes

63.6(i)(7) Yes

63.6(i)(8) Yes This paragraph only references “paragraphs (i)(4) through (i)(6) of this 

section” for compliance extension provisions. But, §63.343(a)(6) of subpart 

N also contains provisions for requesting a compliance extension.
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63.6(i)(9) Yes This paragraph only references “paragraphs (i)(4) through (i)(6) of this 

section” and “paragraphs (i)(4) and (i)(5) of this section” for compliance 

extension provisions. But, §63.343(a)(6) of subpart N also contains 

provisions for requesting a compliance extension.

63.6(i)(10)(i)–(iv) Yes

63.6(i)(10)(v)(A) Yes This paragraph only references “paragraph (i)(4)” for compliance extension 

provisions. But, §63.343(a)(6) of subpart N also contains provisions for 

requesting a compliance extension.

63.6(i)(10)(v)(B) Yes

63.6(i)(11) Yes

63.6(i)(12)(i) Yes This paragraph only references “paragraph (i)(4)(i) or (i)(5) of this section” 

for compliance extension provisions. But, §63.343(a)(6) of subpart N also 

contains provisions for requesting a compliance extension.

63.6(i)(12)(ii)–

(iii)

Yes

63.6(i)(13) Yes

63.6(i)(14) Yes

63.6(i)(16) Yes

63.6(j) Yes

63.7(a)(1) Yes

63.7(a)(2)(i)–(vi) Yes

63.7(a)(2)(ix) Yes

63.7(a)(3) Yes

63.7(b)(1) No §63.347(d) of subpart N requires notification prior to the performance test. 

§63.344(a) of subpart N requires submission of a site-specific test plan 

upon request.

63.7(b)(2) Yes

63.7(c) No §63.344(a) of subpart N specifies what the test plan should contain, but 

does not require test plan approval or performance audit samples.

63.7(d) Yes Except replace “source” in the first sentence of §63.7(d) of subpart A with 

“affected source.”

63.7(e) Yes Subpart N also contains test methods specific to affected sources covered 

by that subpart.

63.7(f) Yes §63.344(c)(2) of subpart N identifies CARB Method 425 as acceptable 

under certain conditions.

63.7(g)(1) No Subpart N identifies the items to be reported in the compliance test 
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[§63.344(a)] and the timeframe for submitting the results [§63.347(f)].

63.7(g)(3) Yes

63.7(h)(1)–(2) Yes

63.7(h)(3)(i) Yes This paragraph only references “§63.6(i)” for compliance extension 

provisions. But, §63.343(a)(6) of subpart N also contains provisions for 

requesting a compliance extension.

63.7(h)(3)(ii)–(iii) Yes

63.7(h)(4)–(5) Yes

63.8(a)(1) Yes

63.8(a)(2) No Work practice standards are contained in §63.342(f) of subpart N.

63.8(a)(4) No

63.8(b)(1) Yes

63.8(b)(2) No §63.344(d) of subpart N specifies the monitoring location when there are 

multiple sources.

63.8(b)(3) No §63.347(g)(4) of subpart N identifies reporting requirements when multiple 

monitors are used.

63.8(c)(1)(i) No Subpart N requires proper maintenance of monitoring devices expected to 

be used by sources subject to subpart N.

63.8(c)(1)(ii) No §63.342(f)(3)(iv) of subpart N specifies reporting when the O&M plan is not 

followed.

63.8(c)(1)(iii) No §63.343(f)(2) identifies the criteria for whether O&M procedures are 

acceptable.

63.8(c)(2)–(3) No §63.344(d)(2) requires appropriate use of monitoring devices.

63.8(c)(4)–(7) No

63.8(d) No Maintenance of monitoring devices is required by §§63.342(f) and 

63.344(d)(2) of subpart N.

63.8(e) No There are no performance evaluation procedures for the monitoring devices 

expected to be used to comply with subpart N.

63.8(f)(1) Yes

63.8(f)(2) No Instances in which the Administrator may approve alternatives to the 

monitoring methods and procedures of subpart N are contained in 

§63.343(c)(8) of subpart N.

63.8(f)(3) Yes

63.8(f)(4) Yes
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63.8(f)(5) Yes

63.8(f)(6) No Subpart N does not require the use of CEM's.

63.8(g) No Monitoring data does not need to be reduced for reporting purposes 

because subpart N requires measurement once/day.

63.9(a) Yes

63.9(b)(1)(i)–(ii) No §63.343(a)(3) of subpart N requires area sources to comply with major 

source provisions if an increase in HAP emissions causes them to become 

major sources.

63.9(b)(1)(iii) No §63.347(c)(2) of subpart N specifies initial notification requirements for new 

or reconstructed affected sources.

63.9(b)(2) No §63.347(c)(1) of subpart N specifies the information to be contained in the 

initial notification.

63.9(b)(3) No §63.347(c)(2) of subpart N specifies notification requirements for new or 

reconstructed sources that are not major affected sources.

63.9(b)(4) No

63.9(b)(5) No

63.9(c) Yes This paragraph only references “§63.6(i)(4) through §63.6(i)(6)” for 

compliance extension provisions. But, §63.343(a)(6) of subpart N also 

contains provisions for requesting a compliance extension. Subpart N 

provides a different timeframe for submitting the request than §63.6(i)(4).

63.9(d) Yes This paragraph only references “the notification dates established in 

paragraph (g) of this section.” But, §63.347 of subpart N also contains 

notification dates.

63.9(e) No Notification of performance test is required by §63.347(d) of subpart N.

63.9(f) No

63.9(g) No Subpart N does not require a performance evaluation or relative accuracy 

test for monitoring devices.

63.9(h)(1)–(3) No §63.347(e) of subpart N specifies information to be contained in the 

notification of compliance status and the timeframe for submitting this 

information.

63.9(h)(5) No Similar language has been incorporated into §63.347(e)(2)(iii) of subpart N.

63.9(h)(6) Yes

63.9(i) Yes

63.9(j) Yes

63.10(a) Yes

63.10(b)(1) Yes
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63.10(b)(2) No §63.346(b) of subpart N specifies the records that must be maintained.

63.10(b)(3) No Subpart N applies to major and area sources.

63.10(c) No Applicable requirements of §63.10(c) have been incorporated into 

§63.346(b) of subpart N.

63.10(d)(1) Yes

63.10(d)(2) No §63.347(f) of subpart N specifies the timeframe for reporting performance 

test results.

63.10(d)(3) No Subpart N does not contain opacity or visible emissions standards.

63.10(d)(4) Yes

63.10(d)(5) No §63.342(f)(3)(iv) and §63.347(g)(3) of subpart N specify reporting 

associated with malfunctions.

63.10(e) No §63.347(g) and (h) of subpart N specify the frequency of periodic reports of 

monitoring data used to establish compliance. Applicable requirements of 

§63.10(e) have been incorporated into §63.347(g) and (h).

63.10(f) Yes

63.11 No Flares will not be used to comply with the emission limits.

63.12–63.15 Yes

[60 FR 4963, Jan. 25, 1995, as amended at 61 FR 27787, June 3, 1996; 70 FR 75345, Dec. 19, 2005] 
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ATTACHMENT B 

MCDOWELL ENTERPRISES, INC 

039-26362-00413 
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ATTACHMENT B

Title 40: Protection of Environment

PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE 

CATEGORIES 

Subpart T—National Emission Standards for Halogenated Solvent Cleaning

Source: 59 FR 61805, Dec. 2, 1994, unless otherwise noted.

§ 63.460 Applicability and designation of source.

(a) The provisions of this subpart apply to each individual batch vapor, in-line vapor, in-line cold, and batch cold 

solvent cleaning machine that uses any solvent containing methylene chloride (CAS No. 75–09–2), perchloroethylene 

(CAS No. 127–18–4), trichloroethylene (CAS No. 79–01–6), 1,1,1-trichloroethane (CAS No. 71–55–6), carbon 

tetrachloride (CAS No. 56–23–5) or chloroform (CAS No. 67–66–3), or any combination of these halogenated HAP 

solvents, in a total concentration greater than 5 percent by weight, as a cleaning and/or drying agent. The 

concentration of these solvents may be determined using EPA test method 18, material safety data sheets, or 

engineering calculations. Wipe cleaning activities, such as using a rag containing halogenated solvent or a spray 

cleaner containing halogenated solvent are not covered under the provisions of this subpart. 

(b) Except as noted in appendix C (General Provisions Applicability to subpart T) of this subpart, the provisions of 

subpart A of this part (General Provisions) apply to owners or operators of any solvent cleaning machine meeting the 

applicability criteria of paragraph (a) of this section. 

(c) Except as provided in paragraph (g) of this section, each solvent cleaning machine subject to this subpart that 

commenced construction or reconstruction after November 29, 1993 shall achieve compliance with the provisions of 

this subpart, except for §63.471, immediately upon start-up or by December 2, 1994, whichever is later. 

(d) Except as provided in paragraph (g) of this section, each solvent cleaning machine subject to this subpart that 

commenced construction or reconstruction on or before November 29, 1993 shall achieve compliance with the 

provisions of this subpart, except for §63.471, no later than December 2, 1997. 

(e) In delegating implementation and enforcement authority to a State under section 112(d) of the Act, the authority 

contained in paragraph (f) of this section shall be retained by the Administrator and not transferred to a State. 

(f) [Reserved] 

(g) Each continuous web cleaning machine subject to this subpart shall achieve compliance with the provisions of this 

subpart, except for §63.471, no later than December 2, 1999. 

(h) If you are an owner or operator of an area source subject to this subpart, you are exempt from the obligation to 

obtain a permit under 40 CFR part 70 or 71, provided you are not required to obtain a permit under 40 CFR 70.3(a) or 

71.3(a) for a reason other than your status as an area source under this subpart. Notwithstanding the previous 

sentence, you must continue to comply with the provisions of this subpart applicable to area sources. 

(i) The compliance date for the requirements in §63.471 depends on the date that construction or reconstruction of 

the affected facility commences. For purposes of this paragraph, affected facility means all solvent cleaning 

machines, except solvent cleaning machines used in the manufacture and maintenance of aerospace products, 

solvent cleaning machines used in the manufacture of narrow tubing, and continuous web cleaning machines, located 

at a major source that are subject to the facility-wide limits in table 1 of §63.471(b)(2), and for area sources, affected 

facility means all solvent cleaning machines, except cold batch cleaning machines, located at an area source that are 

subject to the facility-wide limits in table 1 of §63.471(b)(2). 
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(1) Each affected facility that was constructed or reconstructed on or before August 17, 2006, shall be in compliance 

with the provisions of this subpart no later than May 3, 2010. 

(2) Each affected facility that was constructed or reconstructed on or after August 17, 2006, shall be in compliance 

with the provisions of this subpart on May 3, 2007 or immediately upon startup, whichever is later. 

[59 FR 61805, Dec. 2, 1994; 59 FR 67750, Dec. 30, 1994, as amended at 60 FR 29485, June 5, 1995; 63 FR 68400, 

Dec. 11, 1998; 68 FR 37349, June 23, 2003; 70 FR 75345, Dec. 19, 2005; 72 FR 25157, May 3, 2007] 

§ 63.461 Definitions.

Unless defined below, all terms used in this subpart are used as defined in the 1990 Clean Air Act, or in subpart A of 

40 CFR part 63: 

Administrator means the Administrator of the United States Environmental Protection Agency or his or her authorized 

representative (e.g., State that has been delegated the authority to implement the provisions of this part.) 

Air blanket means the layer of air inside the solvent cleaning machine freeboard located above the solvent/air 

interface. The centerline of the air blanket is equidistant between the sides of the machine. 

Air knife system means a device that directs forced air at high pressure, high volume, or a combination of high 

pressure and high volume, through a small opening directly at the surface of a continuous web part. The purpose of 

this system is to remove the solvent film from the surfaces of the continuous web part. 

Automated parts handling system means a mechanical device that carries all parts and parts baskets at a controlled 

speed from the initial loading of soiled or wet parts through the removal of the cleaned or dried parts. Automated 

parts handling systems include, but are not limited to, hoists and conveyors. 

Batch cleaning machine means a solvent cleaning machine in which individual parts or a set of parts move through 

the entire cleaning cycle before new parts are introduced into the solvent cleaning machine. An open-top vapor 

cleaning machine is a type of batch cleaning machine. A solvent cleaning machine, such as a ferris wheel or a crossrod degreaser, that clean multiple batch loads simultaneously and are manually loaded are batch cleaning machines. 

Carbon adsorber means a bed of activated carbon into which an air-solvent gas-vapor stream is routed and which 

adsorbs the solvent on the carbon. 

Clean liquid solvent means fresh unused solvent, recycled solvent, or used solvent that has been cleaned of soils 

(e.g., skimmed of oils or sludge and strained of metal chips). 

Cleaning capacity means, for a cleaning machine without a solvent/air interface, the maximum volume of parts that 

can be cleaned at one time. In most cases, the cleaning capacity is equal to the volume (length times width times 

height) of the cleaning chamber. 

Cold cleaning machine means any device or piece of equipment that contains and/or uses liquid solvent, into which 

parts are placed to remove soils from the surfaces of the parts or to dry the parts. Cleaning machines that contain 

and use heated, nonboiling solvent to clean the parts are classified as cold cleaning machines. 

Combined squeegee and air-knife system means a system consisting of a combination of a squeegee system and an 

air-knife system within a single enclosure. 

Consumption means the amount of halogenated hazardous air pollutant solvent added to the solvent cleaning 

machine. 

Continuous web cleaning machine means a solvent cleaning machine in which parts such as film, coils, wire, and 

metal strips are cleaned at speeds typically in excess of 11 feet per minute. Parts are generally uncoiled, cleaned 

such that the same part is simultaneously entering and exiting the solvent application area of the solvent cleaning 
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machine, and then recoiled or cut. For the purposes of this subpart, all continuous web cleaning machines are 

considered to be a subset of in-line solvent cleaning machines. 

Cover means a lid, top, or portal cover that shields the solvent cleaning machine openings from air disturbances 

when in place and is designed to be easily opened and closed without disturbing the vapor zone. Air disturbances 

include, but are not limited to, lip exhausts, ventilation fans, and general room drafts. Types of covers include, but are 

not limited to, sliding, biparting, and rolltop covers. 

Cross-rod solvent cleaning machine means a batch solvent cleaning machine in which parts baskets are suspended 

from “cross-rods” as they are moved through the machine. In a cross-rod cleaning machine, parts are loaded semicontinuously, and enter and exit the machine from a single portal. 

Downtime mode means the time period when a solvent cleaning machine is not cleaning parts and the sump heating 

coils, if present, are turned off. 

Dwell means the technique of holding parts within the freeboard area but above the vapor zone of the solvent 

cleaning machine. Dwell occurs after cleaning to allow solvent to drain from the parts or parts baskets back into the 

solvent cleaning machine. 

Dwell time means the required minimum length of time that a part must dwell, as determined by §63.465(d). 

Emissions means halogenated hazardous air pollutant solvent consumed (i.e., halogenated hazardous air pollutant 

solvent added to the machine) minus the liquid halogenated hazardous air pollutant solvent removed from the 

machine and the halogenated hazardous air pollutant solvent removed from the machine in the solid waste. 

Existing means any solvent cleaning machine the construction or reconstruction of which was commenced on or 

before November 29, 1993. A machine, the construction or reconstruction of which was commenced on or before 

November 29, 1993, but that did not meet the definition of a solvent cleaning machine on December 2, 1994, 

because it did not use halogenated HAP solvent liquid or vapor covered under this subpart to remove soils, becomes 

an existing source when it commences to use such liquid or vapor. A solvent cleaning machine moved within a 

contiguous facility or to another facility under the same ownership, constitutes an existing machine. 

Freeboard area means; for a batch cleaning machine, the area within the solvent cleaning machine that extends from 

the solvent/air interface to the top of the solvent cleaning machine; for an in-line cleaning machine, it is the area 

within the solvent cleaning machine that extends from the solvent/air interface to the bottom of the entrance or exit 

opening, whichever is lower. 

Freeboard height means; for a batch cleaning machine, the distance from the solvent/air interface, as measured 

during the idling mode, to the top of the cleaning machine; for an in-line cleaning machine, it is the distance from the 

solvent/air interface to the bottom of the entrance or exit opening, whichever is lower, as measured during the idling 

mode. 

Freeboard ratio means the ratio of the solvent cleaning machine freeboard height to the smaller interior dimension 

(length, width, or diameter) of the solvent cleaning machine. 

Freeboard refrigeration device (also called a chiller) means a set of secondary coils mounted in the freeboard area 

that carries a refrigerant or other chilled substance to provide a chilled air blanket above the solvent vapor. A primary 

condenser capable of meeting the requirements of §63.463(e)(2)(i) is defined as both a freeboard refrigeration device 

and a primary condenser for the purposes of these standards. 

Halogenated hazardous air pollutant solvent or halogenated HAP solvent means methylene chloride (CAS No. 75–

09–2), perchloroethylene (CAS No. 127–18–4), trichloroethylene (CAS No. 79–01–6), 1,1,1-trichloroethane (CAS No. 

71–55–6), carbon tetrachloride (CAS No. 56–23–5), and chloroform (CAS No. 67–66–3). 

Hoist means a mechanical device that carries the parts basket and the parts to be cleaned from the loading area into 

the solvent cleaning machine and to the unloading area at a controlled speed. A hoist may be operated by controls or 

may be programmed to cycle parts through the cleaning cycle automatically. 
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Idling mode means the time period when a solvent cleaning machine is not actively cleaning parts and the sump 

heating coils, if present, are turned on. 

Idling-mode cover means any cover or solvent cleaning machine design that allows the cover to shield the cleaning 

machine openings during the idling mode. A cover that meets this definition can also be used as a working-mode 

cover if that definition is also met. 

Immersion cold cleaning machine means a cold cleaning machine in which the parts are immersed in the solvent 

when being cleaned. A remote reservoir cold cleaning machine that is also an immersion cold cleaning machine is 

considered an immersion cold cleaning machine for purposes of this subpart. 

In-line cleaning machine or continuous cleaning machine means a solvent cleaning machine that uses an automated 

parts handling system, typically a conveyor, to automatically provide a continuous supply of parts to be cleaned. 

These units are fully enclosed except for the conveyor inlet and exit portals. In-line cleaning machines can be either 

cold or vapor cleaning machines. 

Leak-proof coupling means a threaded or other type of coupling that prevents solvents from leaking while filling or 

draining solvent to and from the solvent cleaning machine. 

Lip exhaust means a device installed at the top of the opening of a solvent cleaning machine that draws in air and 

solvent vapor from the freeboard area and ducts the air and vapor away from the solvent cleaning area. 

Monthly reporting period means any calendar month in which the owner or operator of a solvent cleaning machine is 

required to calculate and report the solvent emissions from each solvent cleaning machine. 

New means any solvent cleaning machine the construction or reconstruction of which is commenced after November 

29, 1993. 

Open-top vapor cleaning machine means a batch solvent cleaning machine that has its upper surface open to the air 

and boils solvent to create solvent vapor used to clean and/or dry parts. 

Part means any object that is cleaned in a solvent cleaning machine. Parts include, but are not limited to, discrete 

parts, assemblies, sets of parts, and parts cleaned in a continuous web cleaning machine (i.e., continuous sheets of 

metal, film). 

Primary condenser means a series of circumferential cooling coils on a vapor cleaning machine through which a 

chilled substance is circulated or recirculated to provide continuous condensation of rising solvent vapors and, 

thereby, create a concentrated solvent vapor zone. 

Reduced room draft means decreasing the flow or movement of air across the top of the freeboard area of the 

solvent cleaning machine to meet the specifications of §63.463(e)(2)(ii). Methods of achieving a reduced room draft 

include, but are not limited to, redirecting fans and/or air vents to not blow across the cleaning machine, moving the 

cleaning machine to a corner where there is less room draft, and constructing a partial or complete enclosure around 

the cleaning machine. 

Remote reservoir cold cleaning machine means any device in which liquid solvent is pumped to a sink-like work area 

that drains solvent back into an enclosed container while parts are being cleaned, allowing no solvent to pool in the 

work area. 

Remote reservoir continuous web cleaning machine means a continuous web cleaning machine in which there is no 

exposed solvent sump. In these units, the solvent is pumped from an enclosed chamber and is typically applied to the 

continuous web part through a nozzle or series of nozzles. The solvent then drains from the part and is collected and 

recycled through the machine, allowing no solvent to pool in the work or cleaning area. 

Soils means contaminants that are removed from the parts being cleaned. Soils include, but are not limited to, 

grease, oils, waxes, metal chips, carbon deposits, fluxes, and tars. 
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Solvent/air interface means, for a vapor cleaning machine, the location of contact between the concentrated solvent 

vapor layer and the air. This location of contact is defined as the mid-line height of the primary condenser coils. For a 

cold cleaning machine, it is the location of contact between the liquid solvent and the air. 

Solvent/air interface area means; for a vapor cleaning machine, the surface area of the solvent vapor zone that is 

exposed to the air; for an in-line cleaning machine, it is the total surface area of all the sumps; for a cold cleaning 

machine, it is the surface area of the liquid solvent that is exposed to the air. 

Solvent cleaning machine means any device or piece of equipment that uses halogenated HAP solvent liquid or 

vapor to remove soils from the surfaces of materials. Types of solvent cleaning machines include, but are not limited 

to, batch vapor, in-line vapor, in-line cold, and batch cold solvent cleaning machines. Buckets, pails, and beakers with 

capacities of 7.6 liters (2 gallons) or less are not considered solvent cleaning machines. 

Solvent vapor zone means; for a vapor cleaning machine, the area that extends from the liquid solvent surface to the 

level that solvent vapor is condensed. This condensation level is defined as the midline height of the primary 

condenser coils. 

Squeegee system means a system that uses a series of pliable surfaces to remove the solvent film from the surfaces 

of the continuous web part. These pliable surfaces, called squeegees, are typically made of rubber or plastic media, 

and need to be periodically replaced to ensure continued proper function. 

Sump means the part of a solvent cleaning machine where the liquid solvent is located. 

Sump heater coils means the heating system on a cleaning machine that uses steam, electricity, or hot water to heat 

or boil the liquid solvent. 

Superheated part technology means a system that is part of the continuous web process that heats the continuous 

web part either directly or indirectly to a temperature above the boiling point of the cleaning solvent. This could 

include a process step, such as a tooling die that heats the part as it is processed, as long as the part remains 

superheated through the cleaning machine. 

Superheated vapor system means a system that heats the solvent vapor, either passively or actively, to a 

temperature above the solvent's boiling point. Parts are held in the superheated vapor before exiting the machine to 

evaporate the liquid solvent on them. Hot vapor recycle is an example of a superheated vapor system. 

Vapor cleaning machine means a batch or in-line solvent cleaning machine that boils liquid solvent generating solvent 

vapor that is used as a part of the cleaning or drying cycle. 

Water layer means a layer of water that floats above the denser solvent and provides control of solvent emissions. In 

many cases, the solvent used in batch cold cleaning machines is sold containing the appropriate amount of water to 

create a water cover. 

Working mode means the time period when the solvent cleaning machine is actively cleaning parts. 

Working-mode cover means any cover or solvent cleaning machine design that allows the cover to shield the 

cleaning machine openings from outside air disturbances while parts are being cleaned in the cleaning machine. A 

cover that is used during the working mode is opened only during parts entry and removal. A cover that meets this 

definition can also be used as an idling-mode cover if that definition is also met. 

[59 FR 61805, Dec. 2, 1994; 60 FR 29485, June 5, 1995, as amended at 63 FR 24751, May 5, 1998; 64 FR 67798, 

Dec. 3, 1999] 

§ 63.462 Batch cold cleaning machine standards.

(a) Each owner or operator of an immersion batch cold solvent cleaning machine shall comply with the requirements 

specified in paragraph (a)(1) or (a)(2) of this section. 
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(1) Employ a tightly fitting cover that shall be closed at all times except during parts entry and removal, and a water 

layer at a minimum thickness of 2.5 centimeters (1.0 inch) on the surface of the solvent within the cleaning machine, 

or 

(2) Employ a tightly fitting cover that shall be closed at all times except during parts entry and removal and a 

freeboard ratio of 0.75 or greater. 

(b) Each owner or operator of a remote-reservoir batch cold solvent cleaning machine shall employ a tightly fitting 

cover over the solvent sump that shall be closed at all times except during the cleaning of parts. 

(c) Each owner or operator of a batch cold solvent cleaning machine complying with paragraph (a)(2) or (b) of this 

section shall comply with the work and operational practice requirements specified in paragraphs (c)(1) through (c)(9) 

of this section as applicable. 

(1) All waste solvent shall be collected and stored in closed containers. The closed container may contain a device 

that allows pressure relief, but does not allow liquid solvent to drain from the container. 

(2) If a flexible hose or flushing device is used, flushing shall be performed only within the freeboard area of the 

solvent cleaning machine. 

(3) The owner or operator shall drain solvent cleaned parts for 15 seconds or until dripping has stopped, whichever is 

longer. Parts having cavities or blind holes shall be tipped or rotated while draining. 

(4) The owner or operator shall ensure that the solvent level does not exceed the fill line. 

(5) Spills during solvent transfer shall be wiped up immediately. The wipe rags shall be stored in covered containers 

meeting the requirements of paragraph (c)(1) of this section. 

(6) When an air- or pump-agitated solvent bath is used, the owner or operator shall ensure that the agitator is 

operated to produce a rolling motion of the solvent but not observable splashing against tank walls or parts being 

cleaned. 

(7) The owner or operator shall ensure that, when the cover is open, the cold cleaning machine is not exposed to 

drafts greater than 40 meters per minute (132 feet per minute), as measured between 1 and 2 meters (3.3 and 6.6 

feet) upwind and at the same elevation as the tank lip. 

(8) Except as provided in paragraph (c)(9) of this section, sponges, fabric, wood, and paper products shall not be 

cleaned. 

(9) The prohibition in paragraph (c)(8) of this section does not apply to the cleaning of porous materials that are part 

of polychlorinated biphenyl (PCB) laden transformers if those transformers are handled throughout the cleaning 

process and disposed of in compliance with an approved PCB disposal permit issued in accordance with the Toxic 

Substances Control Act. 

(d) Each owner or operator of a batch cold cleaning machine shall submit an initial notification report as described in 

§63.468 (a) and (b) and a compliance report as described in §63.468(c). 

(e) Each owner or operator subject to the requirements of paragraph (c)(1) through (8) of this section may request to 

use measures other than those described in these paragraphs. The owner or operator must demonstrate to the 

Administrator (or delegated State, local, or Tribal authority) that the alternative measures will result in equivalent or 

better emissions control compared to the measures described in paragraphs (c)(1) through (8) of this section. For 

example, storing solvent and solvent-laden materials in an enclosed area that is ventilated to a solvent recovery or 

destruction device may be considered an acceptable alternative. 

[59 FR 61805, Dec. 2, 1994; 60 FR 29485, June 5, 1995, as amended at 64 FR 67799, Dec. 3, 1999; 68 FR 37349, 

June 23, 2003] 
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§ 63.463 Batch vapor and in-line cleaning machine standards.

(a) Except as provided in §63.464 for all cleaning machines, each owner or operator of a solvent cleaning machine 

subject to the provisions of this subpart shall ensure that each existing or new batch vapor or in-line solvent cleaning 

machine subject to the provisions of this subpart conforms to the design requirements specified in paragraphs (a)(1) 

through (7) of this section. The owner or operator of a continuous web cleaning machine shall comply with the 

requirements of paragraph (g) or (h) of this section, as appropriate, in lieu of complying with this paragraph. 

(1) Each cleaning machine shall be designed or operated to meet the control equipment or technique requirements in 

paragraph (a)(1)(i) or (a)(1)(ii) of this section. 

(i) An idling and downtime mode cover, as described in §63.463(d)(1)(i), that may be readily opened or closed, that 

completely covers the cleaning machine openings when in place, and is free of cracks, holes, and other defects. 

(ii) A reduced room draft as described in §63.463(e)(2)(ii). 

(2) Each cleaning machine shall have a freeboard ratio of 0.75 or greater. 

(3) Each cleaning machine shall have an automated parts handling system capable of moving parts or parts baskets 

at a speed of 3.4 meters per minute (11 feet per minute) or less from the initial loading of parts through removal of 

cleaned parts. 

(4) Each vapor cleaning machine shall be equipped with a device that shuts off the sump heat if the sump liquid 

solvent level drops to the sump heater coils. This requirement does not apply to a vapor cleaning machine that uses 

steam to heat the solvent. 

(5) Each vapor cleaning machine shall be equipped with a vapor level control device that shuts off sump heat if the 

vapor level in the vapor cleaning machine rises above the height of the primary condenser. 

(6) Each vapor cleaning machine shall have a primary condenser. 

(7) Each cleaning machine that uses a lip exhaust shall be designed and operated to route all collected solvent 

vapors through a properly operated and maintained carbon adsorber that meets the requirements of paragraph 

(e)(2)(vii) of this section. 

(b) Except as provided in §63.464, each owner or operator of an existing or new batch vapor cleaning machine shall 

comply with either paragraph (b)(1) or (b)(2) of this section. 

(1) Each owner or operator of a batch vapor cleaning machine with a solvent/air interface area of 1.21 square meters 

(13 square feet) or less shall comply with the requirements specified in either paragraph (b)(1)(i) or (b)(1)(ii) of this 

section. 

(i) Employ one of the control combinations listed in table 1 of this subpart or other equivalent methods of control as 

determined using the procedure in §63.469, equivalent methods of control. 

Table 1—Control Combinations for Batch Vapor Solvent Cleaning Machines With a Solvent/Air Interface Area 

of 1.21 Square Meters (13 Square Feet) or Less 

Option Control combinations

1 Working-mode cover, freeboard ratio of 1.0, superheated vapor.

2 Freeboard refrigeration device, superheated vapor.

3 Working-mode cover, freeboard refrigeration device.
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4 Reduced room draft, freeboard ratio of 1.0, superheated vapor.

5 Freeboard refrigeration device, reduced room draft.

6 Freeboard refrigeration device, freeboard ratio of 1.0.

7 Freeboard refrigeration device, dwell.

8 Reduced room draft, dwell, freeboard ratio of 1.0.

9 Freeboard refrigeration device, carbon adsorber.

10 Freeboard ratio of 1.0, superheated vapor, carbon adsorber.

Note: Unlike most of the control techniques available for complying with this rule, carbon adsorbers are not 

considered to be a pollution prevention measure. Use of such units may impose additional cost and burden for a 

number of reasons. First, carbon adsorption units are generally more expensive than other controls listed in the 

options. Second, these units may present cross-media impacts such as effluent discharges if not properly operated 

and maintained, and spent carbon beds have to be disposed of as hazardous waste. When making decisions about 

what controls to install on halogenated solvent cleaning machines to meet the requirements of this rule, all of these 

factors should be weighed and pollution prevention measures are encouraged wherever possible. 

(ii) Demonstrate that their solvent cleaning machine can achieve and maintain an idling emission limit of 0.22 

kilograms per hour per square meter (0.045 pounds per hour per square foot) of solvent/air interface area as 

determined using the procedures in §63.465(a) and appendix A to this part. 

(2) Each owner or operator of a batch vapor cleaning machine with a solvent/air interface area greater than 1.21 

square meters (13 square feet) shall comply with the requirements specified in either paragraph (b)(2)(i) or (b)(2)(ii) of 

this section. 

(i) Employ one of the control combinations listed in table 2 of this subpart or other equivalent methods of control as 

determined using the procedure in §63.469, equivalent methods of control. 

Table 2—Control Combinations for Batch Vapor Solvent Cleaning Machines With a Solvent/Air Interface Area 

Greater than 1.21 Square Meters (13 Square Feet) 

Option Control combinations

1 Freeboard refrigeration device, freeboard ratio of 1.0, superheated vapor.

2 Dwell, freeboard refrigeration device, reduced room draft.

3 Working-mode cover, freeboard refrigeration device, superheated vapor.

4 Freeboard ratio of 1.0, reduced room draft, superheated vapor.

5 Freeboard refrigeration device, reduced room draft, superheated vapor.

6 Freeboard refrigeration device, reduced room draft, freeboard ratio of 1.0.

7 Freeboard refrigeration device, superheated vapor, carbon adsorber.

Note: Unlike most of the control techniques available for complying with this rule, carbon adsorbers are not 

considered to be a pollution prevention measure. Use of such units may impose additional cost and burden for a 

number of reasons. First, carbon adsorption units are generally more expensive than other controls listed in the 

options. Second, these units may present cross-media impacts such as effluent discharges if not properly operated 

and maintained, and spent carbon beds have to be disposed of as hazardous waste. When making decisions about 
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what controls to install on halogenated solvent cleaning machines to meet the requirements of this rule, all of these 

factors should be weighed and pollution prevention measures are encouraged wherever possible. 

(ii) Demonstrate that their solvent cleaning machine can achieve and maintain an idling emission limit of 0.22 

kilograms per hour per square meter (0.045 pounds per hour per square foot) of solvent/air interface area as 

determined using the procedures in §63.465(a) and appendix A of this part. 

(c) Except as provided in §63.464 for all cleaning machines, each owner or operator of an in-line cleaning machine 

shall comply with paragraph (c)(1) or (2) of this section as appropriate. The owner or operator of a continuous web 

cleaning machine shall comply with the requirements of paragraph (g) or (h) of this section, as appropriate, in lieu of 

complying with this paragraph. 

(1) Each owner or operator of an existing in-line cleaning machine shall comply with the requirements specified in 

either paragraph (c)(1)(i) or (c)(1)(ii) of this section. 

(i) Employ one of the control combinations listed in table 3 of this subpart or other equivalent methods of control as 

determined using the procedure in §63.469, equivalent methods of control. 

Table 3—Control Combinations for Existing In-Line Solvent Cleaning Machines 

Option Control combinations

1 Superheated vapor, freeboard ratio of 1.0.

2 Freeboard refrigeration device, freeboard ratio of 1.0.

3 Dwell, freeboard refrigeration device.

4 Dwell, carbon adsorber.

Note: Unlike most of the control techniques available for complying with this rule, carbon adsorbers are not 

considered to be a pollution prevention measure. Use of such units may impose additional cost and burden for a 

number of reasons. First, carbon adsorption units are generally more expensive than other controls listed in the 

options. Second, these units may present cross-media impacts such as effluent discharges if not properly operated 

and maintained, and spent carbon beds have to be disposed of as hazardous waste. When making decisions about 

what controls to install on halogenated solvent cleaning machines to meet the requirements of this rule, all of these 

factors should be weighed and pollution prevention measures are encouraged wherever possible. 

(ii) Demonstrate that their solvent cleaning machine can achieve and maintain an idling emission limit of 0.10 

kilograms per hour per square meter (0.021 pounds per hour per square foot) of solvent/air interface area as 

determined using the procedures in §63.465(a) and appendix A to this part. 

(2) Each owner or operator of a new in-line cleaning machine shall comply with the requirements specified in either 

paragraph (c)(2)(i) or (c)(2)(ii) of this section. 

(i) Employ one of the control combinations listed in table 4 of this subpart or other equivalent methods of control as 

determined using the procedure in §63.469, equivalent methods of control section. 

Table 4—Control Combinations for New In-Line Solvent Cleaning Machines 

Option Control combinations

1 Superheated vapor, freeboard refrigeration device.

2 Freeboard refrigeration device, carbon adsorber.
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3 Superheated vapor, carbon adsorber.

Note: Unlike most of the control techniques available for complying with this rule, carbon adsorbers are not 

considered to be a pollution prevention measure. Use of such units may impose additional cost and burden for a 

number of reasons. First, carbon adsorption units are generally more expensive than other controls listed in the 

options. Second, these units may present cross-media impacts such as effluent discharges if not properly operated 

and maintained, and spent carbon beds have to be disposed of as hazardous waste. When making decisions about 

what controls to install on halogenated solvent cleaning machines to meet the requirements of this rule, all of these 

factors should be weighed and pollution prevention measures are encouraged wherever possible. 

(ii) Demonstrate that their solvent cleaning machine can achieve and maintain an idling emission limit of 0.10 

kilograms per hour per square meter (0.021 pounds per hour per square foot) of solvent/air interface area as 

determined using the procedures in §63.465(a) and appendix A to this part. 

(d) Except as provided in §63.464 for all cleaning machines, each owner or operator of an existing or new batch 

vapor or in-line solvent cleaning machine shall meet all of the following required work and operational practices 

specified in paragraphs (d)(1) through (12) of this section as applicable. The owner or operator of a continuous web 

cleaning machine shall comply with the requirements of paragraph (g) or (h) of this section, as appropriate, in lieu of 

complying with this paragraph. 

(1) Control air disturbances across the cleaning machine opening(s) by incorporating the control equipment or 

techniques in paragraph (d)(1)(i) or (d)(1)(ii) of this section. 

(i) Cover(s) to each solvent cleaning machine shall be in place during the idling mode, and during the downtime mode 

unless either the solvent has been removed from the machine or maintenance or monitoring is being performed that 

requires the cover(s) to not be in place. 

(ii) A reduced room draft as described in §63.463(e)(2)(ii). 

(2) The parts baskets or the parts being cleaned in an open-top batch vapor cleaning machine shall not occupy more 

than 50 percent of the solvent/air interface area unless the parts baskets or parts are introduced at a speed of 0.9 

meters per minute (3 feet per minute) or less. 

(3) Any spraying operations shall be done within the vapor zone or within a section of the solvent cleaning machine 

that is not directly exposed to the ambient air (i.e., a baffled or enclosed area of the solvent cleaning machine). 

(4) Parts shall be oriented so that the solvent drains from them freely. Parts having cavities or blind holes shall be 

tipped or rotated before being removed from any solvent cleaning machine unless an equally effective approach has 

been approved by the Administrator. 

(5) Parts baskets or parts shall not be removed from any solvent cleaning machine until dripping has stopped. 

(6) During startup of each vapor cleaning machine, the primary condenser shall be turned on before the sump heater. 

(7) During shutdown of each vapor cleaning machine, the sump heater shall be turned off and the solvent vapor layer 

allowed to collapse before the primary condenser is turned off. 

(8) When solvent is added or drained from any solvent cleaning machine, the solvent shall be transferred using 

threaded or other leakproof couplings and the end of the pipe in the solvent sump shall be located beneath the liquid 

solvent surface. 

(9) Each solvent cleaning machine and associated controls shall be maintained as recommended by the 

manufacturers of the equipment or using alternative maintenance practices that have been demonstrated to the 

Administrator's satisfaction to achieve the same or better results as those recommended by the manufacturer. 
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(10) Each operator of a solvent cleaning machine shall complete and pass the applicable sections of the test of 

solvent cleaning procedures in appendix A to this part if requested during an inspection by the Administrator. 

(11) Waste solvent, still bottoms, and sump bottoms shall be collected and stored in closed containers. The closed 

containers may contain a device that would allow pressure relief, but would not allow liquid solvent to drain from the 

container. 

(12) Sponges, fabric, wood, and paper products shall not be cleaned. 

(e) Each owner or operator of a solvent cleaning machine complying with paragraph (b), (c), (g), or (h) of this section 

shall comply with the requirements specified in paragraphs (e)(1) through (4) of this section. 

(1) Conduct monitoring of each control device used to comply with §63.463 of this subpart as provided in §63.466. 

(2) Determine during each monitoring period whether each control device used to comply with these standards meets 

the requirements specified in paragraphs (e)(2)(i) through (xi) of this section. 

(i) If a freeboard refrigeration device is used to comply with these standards, the owner or operator shall ensure that 

the chilled air blanket temperature (in °F), measured at the center of the air blanket, is no greater than 30 percent of 

the solvent's boiling point. 

(ii) If a reduced room draft is used to comply with these standards, the owner or operator shall comply with the 

requirements specified in paragraphs (e)(2)(ii)(A) and (e)(2)(ii)(B) of this section. 

(A) Ensure that the flow or movement of air across the top of the freeboard area of the solvent cleaning machine or 

within the solvent cleaning machine enclosure does not exceed 15.2 meters per minute (50 feet per minute) at any 

time as measured using the procedures in §63.466(d). 

(B) Establish and maintain the operating conditions under which the wind speed was demonstrated to be 15.2 meters 

per minute (50 feet per minute) or less as described in §63.466(d). 

(iii) If a working-mode cover is used to comply with these standards, the owner or operator shall comply with the 

requirements specified in paragraphs (e)(2)(iii)(A) and (e)(2)(iii)(B) of this section. 

(A) Ensure that the cover opens only for part entrance and removal and completely covers the cleaning machine 

openings when closed. 

(B) Ensure that the working-mode cover is maintained free of cracks, holes, and other defects. 

(iv) If an idling-mode cover is used to comply with these standards, the owner or operator shall comply with the 

requirements specified in paragraphs (e)(2)(iv)(A) and (e)(2)(iv)(B) of this section. 

(A) Ensure that the cover is in place whenever parts are not in the solvent cleaning machine and completely covers 

the cleaning machine openings when in place. 

(B) Ensure that the idling-mode cover is maintained free of cracks, holes, and other defects. 

(v) If a dwell is used to comply with these standards, the owner or operator shall comply with the requirements 

specified in paragraphs (e)(2)(v)(A) and (e)(2)(v)(B) of this section. 

(A) Determine the appropriate dwell time for each type of part or parts basket, or determine the maximum dwell time 

using the most complex part type or parts basket, as described in §63.465(d). 
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(B) Ensure that, after cleaning, each part is held in the solvent cleaning machine freeboard area above the vapor 

zone for the dwell time determined for that particular part or parts basket, or for the maximum dwell time determined 

using the most complex part type or parts basket. 

(vi) If a superheated vapor system is used to comply with these standards, the owner or operator shall comply with 

the requirements specified in paragraphs (e)(2)(vi)(A) through (e)(2)(vi)(C) of this section. 

(A) Ensure that the temperature of the solvent vapor at the center of the superheated vapor zone is at least 10 °F 

above the solvent's boiling point. 

(B) Ensure that the manufacturer's specifications for determining the minimum proper dwell time within the 

superheated vapor system is followed. 

(C) Ensure that parts remain within the superheated vapor for at least the minimum proper dwell time. 

(vii) If a carbon adsorber in conjunction with a lip exhaust or other exhaust internal to the cleaning machine is used to 

comply with these standards, the owner or operator shall comply with the following requirements: 

(A) Ensure that the concentration of organic solvent in the exhaust from this device does not exceed 100 parts per 

million of any halogenated HAP compound as measured using the procedure in §63.466(e). If the halogenated HAP 

solvent concentration in the carbon adsorber exhaust exceeds 100 parts per million, the owner or operator shall 

adjust the desorption schedule or replace the disposable canister, if not a regenerative system, so that the exhaust 

concentration of halogenated HAP solvent is brought below 100 parts per million. 

(B) Ensure that the carbon adsorber bed is not bypassed during desorption. 

(C) Ensure that the lip exhaust is located above the solvent cleaning machine cover so that the cover closes below 

the lip exhaust level. 

(viii) If a superheated part system is used to comply with the standards for continuous web cleaning machines in 

paragraph (g) of this section, the owner or operator shall ensure that the temperature of the continuous web part is at 

least 10 degrees Fahrenheit above the solvent boiling point while the part is traveling through the cleaning machine. 

(ix) If a squeegee system is used to comply with the continuous web cleaning requirements of paragraph (g)(3)(iii) or 

(h)(2)(i) of this section, the owner or operator shall comply with the following requirements. 

(A) Determine the appropriate maximum product throughput for the squeegees used in the squeegee system, as 

described in §63.465(f). 

(B) Conduct the weekly monitoring required by §63.466(a)(3). Record the results required by §63.467(a)(6). 

(C) Calculate the total amount of continuous web product processed since the squeegees were replaced and 

compare to the maximum product throughput for the squeegees. 

(D) Ensure squeegees are replaced at or before the maximum product throughput is attained. 

(E) Redetermine the maximum product throughput for the squeegees if any solvent film is visible on the continuous 

web part immediately after it exits the cleaning machine. 

(x) If an air knife system is used to comply with the continuous web cleaning requirements of paragraph (g)(3)(iii) or 

(h)(2)(i) of this section, the owner or operator shall comply with the following requirements. 

(A) Determine the air knife parameter and parameter value that demonstrate to the Administrator's satisfaction that 

the air knife is properly operating. An air knife is properly operating if no visible solvent film remains on the continuous 

web part after it exits the cleaning machine. 
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(B) Maintain the selected air knife parameter value at the level determined in paragraph (a) of this section. 

(C) Conduct the weekly monitoring required by §63.466(a)(3). 

(D) Redetermine the proper air knife parameter value if any solvent film is visible on the continuous web part 

immediately after it exits the cleaning machine. 

(xi) If a combination squeegee and air knife system is used to comply with the continuous web cleaning requirements 

of paragraph (g)(3)(iii) or (h)(2)(i) of this section, the owner or operator shall comply with the following requirements. 

(A) Determine the system parameter and value that demonstrate to the Administrator's satisfaction that the system is 

properly operating. 

(B) Maintain the selected parameter value at the level determined in paragraph (a) of this section. 

(C) Conduct the weekly monitoring required by §63.466(a)(3). 

(D) Redetermine the proper parameter value if any solvent film is visible on the continuous web part immediately after 

it exits the cleaning machine. 

(3) If any of the requirements of paragraph (e)(2) of this section are not met, determine whether an exceedance has 

occurred using the criteria in paragraphs (e)(3)(i) and (e)(3)(ii) of this section. 

(i) An exceedance has occurred if the requirements of paragraphs (e)(2)(ii)(B), (e)(2)(iii)(A), (e)(2)(iv)(A), (e)(2)(v), 

(e)(2)(vi)(B), (e)(2)(vi)(C), (e)(2)(vii)(B), or (e)(2)(vii)(C) of this section have not been met. 

(ii) An exceedance has occurred if the requirements of paragraphs (e)(2)(i), (e)(2)(ii)(A), (e)(2)(iii)(B), (e)(2)(iv)(B), 

(e)(2)(vi)(A), or (e)(2)(vii)(A) of this section have not been met and are not corrected within 15 days of detection. 

Adjustments or repairs shall be made to the solvent cleaning system or control device to reestablish required levels. 

The parameter must be remeasured immediately upon adjustment or repair and demonstrated to be within required 

limits. 

(4) The owner or operator shall report all exceedances and all corrections and adjustments made to avoid an 

exceedance as specified in §63.468(h). 

(f) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the idling emission 

limit standards in paragraphs (b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) of this section shall comply with the 

requirements specified in paragraphs (f)(1) through (f)(5) of this section. 

(1) Conduct an initial performance test to comply with the requirements specified in paragraphs (f)(1)(i) and (f)(1)(ii) of 

this section. 

(i) Demonstrate compliance with the applicable idling emission limit. 

(ii) Establish parameters that will be monitored to demonstrate compliance. If a control device is used that is listed in 

paragraph (e)(2) of this section, then the requirements for that control device as listed in paragraph (e)(2) of this 

section shall be used unless the owner or operator can demonstrate to the Administrator's satisfaction that an 

alternative strategy is equally effective. 

(2) Conduct the periodic monitoring of the parameters used to demonstrate compliance as described in §63.466(f). 

(3) Operate the solvent cleaning machine within parameters identified in the initial performance test. 

(4) If any of the requirements in paragraphs (f)(1) through (f)(3) of this section are not met, determine whether an 

exceedance has occurred using the criteria in paragraphs (f)(4)(i) and (f)(4)(ii) of this section. 
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(i) If using a control listed in paragraph (e) of this section, the owner or operator shall comply with the appropriate 

parameter values in paragraph (e)(2) and the exceedance delineations in paragraphs (e)(3)(i) and (e)(3)(ii) of this 

section. 

(ii) If using a control not listed in paragraph (e) of this section, the owner or operator shall indicate whether the 

exceedance of the parameters that are monitored to determine the proper functioning of this control would be 

classified as an immediate exceedance or whether a 15 day repair period would be allowed. This information must be 

submitted to the Administrator for approval. 

(5) The owner or operator shall report all exceedances and all corrections and adjustments made to avoid an 

exceedance as specified in §63.468(h). 

(g) Except as provided in §63.464 and in paragraph (h) of this section for remote reservoir continuous web cleaning 

machines, each owner or operator of a continuous web cleaning machine shall comply with paragraphs (g)(1) through 

(4) of this section for each continuous web cleaning machine. 

(1) Except as provided in paragraph (g)(2) of this section, install, maintain, and operate one of the following control 

combinations on each continuous web cleaning machine. 

(i) For each existing continuous web cleaning machine, the following control combinations are allowed: 

(A) Superheated vapor or superheated part technology, and a freeboard ratio of 1.0 or greater. 

(B) Freeboard refrigeration device and a freeboard ratio of 1.0 or greater. 

(C) Carbon adsorption system meeting the requirements of paragraph (e)(2)(vii) of this section. 

(ii) For each new continuous web cleaning machine, the following control combinations are allowed: 

(A) Superheated vapor or superheated part technology, and a freeboard refrigeration device. 

(B) A freeboard refrigeration device and a carbon adsorber meeting the requirements of paragraph (e)(2)(vii) of this 

section. 

(C) Superheated vapor or superheated part technology, and a carbon adsorber meeting the requirements of 

paragraph (e)(2)(vii) of this section. 

(2) If a carbon adsorber system can be demonstrated to the Administrator's satisfaction to have an overall solvent 

control efficiency ( i.e., capture efficiency removal efficiency) of 70 percent or greater, this system is equivalent to the 

options in paragraph (g) of this section. 

(3) In lieu of complying with the provisions of paragraph (a) of this section, the owner or operator of a continuous web 

cleaning machine shall comply with the following provisions: 

(i) Each cleaning machine shall meet one of the following control equipment or technique requirements: 

(A) An idling and downtime mode cover, as described in paragraph (d)(1)(i) of this section, that may be readily 

opened or closed; that completely covers the cleaning machine openings when in place; and is free of cracks, holes, 

and other defects. A continuous web part that completely occupies an entry or exit port when the machine is idle is 

considered to meet this requirement. 

(B) A reduced room draft as described in paragraph (e)(2)(ii) of this section. 

(C) Gasketed or leakproof doors that separate both the continuous web part feed reel and take-up reel from the room 

atmosphere if the doors are checked according to the requirements of paragraph (e)(2)(iii) of this section. 
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(D) A cleaning machine that is demonstrated to the Administrator's satisfaction to be under negative pressure during 

idling and downtime and is vented to a carbon adsorption system that meets the requirements of either paragraph 

(e)(2)(vii) of this section or paragraph (g)(2) of this section. 

(ii) Each continuous web cleaning machine shall have a freeboard ratio of 0.75 or greater unless that cleaning 

machine is a remote reservoir continuous web cleaning machine. 

(iii) Each cleaning machine shall have an automated parts handling system capable of moving parts or parts baskets 

at a speed of 3.4 meters per minute (11 feet per minute) or less from the initial loading of parts through removal of 

cleaned parts, unless the cleaning machine is a continuous web cleaning machine that has a squeegee system or air 

knife system installed, maintained, and operated on the continuous web cleaning machine meeting the requirements 

of paragraph (e) of this section. 

(iv) Each vapor cleaning machine shall be equipped with a device that shuts off the sump heat if the sump liquid 

solvent level drops to the sump heater coils. This requirement does not apply to a vapor cleaning machine that uses 

steam to heat the solvent. 

(v) Each vapor cleaning machine shall be equipped with a vapor level control device that shuts off sump heat if the 

vapor level in the vapor cleaning machine rises above the height of the primary condenser. 

(vi) Each vapor cleaning machine shall have a primary condenser. 

(vii) Each cleaning machine that uses a lip exhaust or any other exhaust within the solvent cleaning machine shall be 

designed and operated to route all collected solvent vapors through a properly operated and maintained carbon 

adsorber that meets the requirements of either paragraph (e)(2)(vii) or (g)(2) of this section. 

(4) In lieu of complying with the provisions of paragraph (d) of this section, the owner or operator of a continuous web 

cleaning machine shall comply with the following provisions: 

(i) Control air disturbances across the cleaning machine opening(s) by incorporating one of the following control 

equipment or techniques: 

(A) Cover(s) to each solvent cleaning machine shall be in place during the idling mode and during the downtime 

mode unless either the solvent has been removed from the machine or maintenance or monitoring is being performed 

that requires the cover(s) in place. A continuous web part that completely occupies an entry or exit port when the 

machine is idle is considered to meet this requirement. 

(B) A reduced room draft as described in paragraph (e)(2)(ii) of this section. 

(C) Gasketed or leakproof doors or covers that separate both the continuous web part feed reel and take-up reel from 

the room atmosphere if the doors are checked according to the requirements of paragraph (e)(2)(iii) of this section. 

(D) A cleaning machine that is demonstrated to the Administrator's satisfaction to be under negative pressure during 

idling and downtime and is vented to a carbon adsorption system that meets either the requirements of paragraph 

(e)(2)(vii) of this section or paragraph (g)(2) of this section. 

(ii) Any spraying operations shall be conducted in a section of the solvent cleaning machine that is not directly 

exposed to the ambient air ( i.e., a baffled or enclosed area of the solvent cleaning machine) or within a machine 

having a door or cover that meets the requirements of paragraph (g)(4)(i)(C) of this section. 

(iii) During startup of each vapor cleaning machine, the primary condenser shall be turned on before the sump heater. 

(iv) During shutdown of each vapor cleaning machine, the sump heater shall be turned off and the solvent vapor layer 

allowed to collapse before the primary condenser is turned off. 
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(v) When solvent is added or drained from any solvent cleaning machine, the solvent shall be transferred using 

threaded or other leakproof couplings, and the end of the pipe in the solvent sump shall be located beneath the liquid 

solvent surface. 

(vi) Each solvent cleaning machine and associated controls shall be maintained as recommended by the 

manufacturers of the equipment or using alternative maintenance practices that have been demonstrated to the 

Administrator's satisfaction to achieve the same or better results as those recommended by the manufacturer. 

(vii) Waste solvent, still bottoms, sump bottoms, and waste absorbent materials used in the cleaning process for 

continuous web cleaning machines shall be collected and stored in waste containers. The closed containers may 

contain a device that would allow pressure relief, but would not allow liquid solvent to drain from the container. 

(viii) Except as provided in paragraph (g)(4)(ix) of this section, sponges, fabric, wood, and paper products shall not be 

cleaned. 

(ix) The prohibition in paragraph (g)(4)(viii) of this section does not apply to absorbent materials that are used as part 

of the cleaning process of continuous web cleaning machines, including rollers and roller covers. 

(h) Except as provided in §63.464, each owner or operator of a remote reservoir continuous web cleaning machine 

shall comply with paragraphs (h)(1) through (4) of this section. 

(1) Except as provided in paragraph (h)(2) of this section, install, maintain, and operate one of the following controls 

on each new remote reservoir continuous web cleaning machine. 

(i) Superheated vapor or superheated part technology. 

(ii) A carbon adsorber meeting the requirements of paragraph (e)(2)(vii) of this section. 

(iii) If a carbon adsorber system can be demonstrated to the Administrator's satisfaction to have an overall solvent 

control efficiency ( i.e., capture efficiency removal efficiency) of 70 percent or greater, this system is equivalent to the 

options in paragraphs (h)(1)(i) and (h)(1)(ii) of this section. 

(2) In lieu of complying with the provisions of paragraph (a) of this section, the owner or operator of a remote 

reservoir continuous web cleaning machine shall comply with the following provisions: 

(i) Each cleaning machine shall have an automated parts handling system capable of moving parts or parts baskets 

at a speed of 3.4 meters per minute (11 feet per minute) or less from the initial loading of parts through removal of 

cleaned parts, unless the cleaning machine is a continuous web cleaning machine that has a squeegee system or air 

knife system installed, maintained, and operated on the continuous web cleaning machine meeting the requirements 

of paragraph (e) of this section. 

(ii) Each vapor cleaning machine shall be equipped with a device that shuts off the sump heat if the sump liquid 

solvent level drops to the sump heater coils. 

(iii) Each vapor cleaning machine shall be equipped with a vapor level control device that shuts off sump heat if the 

vapor level in the vapor cleaning machine rises above the height of the primary condenser. 

(iv) Each vapor cleaning machine shall have a primary condenser. 

(v) Each cleaning machine that uses a lip exhaust or any other exhaust within the solvent cleaning machine shall be 

designed and operated to route all collected solvent vapors through a properly operated and maintained carbon 

adsorber that meets the requirements of either paragraph (e)(2)(vii) or (g)(2) of this section. 

(3) In lieu of complying with the provisions of paragraph (d) of this section, the owner or operator of a remote 

reservoir continuous web cleaning machine shall comply with the following provisions: 
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(i) Any spraying operations shall be conducted in a section of the solvent cleaning machine that is not directly 

exposed to the ambient air ( i.e., a baffled or enclosed area of the solvent cleaning machine) or within a machine 

having a door or cover that meets the requirements of paragraph (g)(4)(i)(C) of this section. 

(ii) During startup of each vapor cleaning machine, the primary condenser shall be turned on before the sump heater. 

(iii) During shutdown of each vapor cleaning machine, the sump heater shall be turned off and the solvent vapor layer 

allowed to collapse before the primary condenser is turned off. 

(iv) When solvent is added or drained from any solvent cleaning machine, the solvent shall be transferred using 

threaded or other leakproof couplings, and the end of the pipe in the solvent sump shall be located beneath the liquid 

solvent surface. 

(v) Each solvent cleaning machine and associated controls shall be maintained as recommended by the 

manufacturers of the equipment or using alternative maintenance practices that have been demonstrated to the 

Administrator's satisfaction to achieve the same or better results as those recommended by the manufacturer. 

(vi) Waste solvent, still bottoms, sump bottoms, and waste absorbent materials used in the cleaning process for 

continuous web cleaning machines shall be collected and stored in waste containers. The closed containers may 

contain a device that would allow pressure relief, but would not allow liquid solvent to drain from the container. 

(vii) Except as provided in paragraph (h)(3)(viii) of this section, sponges, fabric, wood, and paper products shall not 

be cleaned. 

(viii) The prohibition in paragraph (h)(3)(vii) of this section does not apply to absorbent materials that are used as part 

of the cleaning process of continuous web cleaning machines, including rollers and roller covers. 

[59 FR 61805, Dec. 2, 1994; 60 FR 29485, June 5, 1995, as amended at 64 FR 67799, Dec. 3, 1999; 65 FR 54422, 

Sept. 8, 2000; 68 FR 37349, June 23, 2003] 

§ 63.464 Alternative standards.

(a) As an alternative to meeting the requirements in §63.463, each owner or operator of a batch vapor or in-line 

solvent cleaning machine can elect to comply with the requirements of §63.464. An owner or operator of a solvent 

cleaning machine who elects to comply with §63.464 shall comply with the requirements specified in either paragraph 

(a)(1) or (a)(2) of this section. 

(1) If the cleaning machine has a solvent/air interface, as defined in §63.461, the owner or operator shall comply with 

the requirements specified in paragraphs (a)(1)(i) and (a)(1)(ii) of this section. 

(i) Maintain a log of solvent additions and deletions for each solvent cleaning machine. 

(ii) Ensure that the emissions from each solvent cleaning machine are equal to or less than the applicable emission 

limit presented in table 5 of this subpart as determined using the procedures in §63.465(b) and (c). 

Table 5—Emission Limits for Batch Vapor and In-Line Solvent Cleaning Machines With a Solvent/Air 

Interface 

Solvent cleaning machine

3-month rolling average monthly emission limit (kilograms/square 

meters/month)

Batch vapor solvent cleaning 

machines

150

Existing in-line solvent cleaning 153
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machines

New in-line solvent cleaning 

machines

99

(2) If the cleaning machine is a batch vapor cleaning machine and does not have a solvent/air interface, the owner or 

operator shall comply with the requirements specified in paragraphs (a)(2)(i) and (a)(2)(ii) of this section. 

(i) Maintain a log of solvent additions and deletions for each solvent cleaning machine. 

(ii) Ensure that the emissions from each solvent cleaning machine are equal to or less than the appropriate limits as 

described in paragraphs (a)(2)(ii)(A) and (a)(2)(ii)(B) of this section. 

(A) For cleaning machines with a cleaning capacity, as reported in §63.468(d), that is less than or equal to 2.95 cubic 

meters, the emission limit shall be determined using table 6 or equation 1. If using table 6, and the cleaning capacity 

of the cleaning machine falls between two cleaning capacity sizes, then the lower of the two emission limits applies. 

(B) For cleaning machines with a cleaning capacity as reported in §63.468(d), that is greater than 2.95 cubic meters, 

the emission limit shall be determined using equation 1. 

EL = 330 * (Vol)0.6 (1) 

where: 

EL = the 3-month rolling average monthly emission limit (kilograms/month). 

Table 6—Emission Limits for Cleaning Machines Without a Solvent/Air Interface 

Cleaning capacity (cubic 

meters)

3–month rolling average monthly emission limit 

(kilograms/month)

0.00 0

0.05 55

0.10 83

0.15 106

0.20 126

0.25 144

0.30 160

0.35 176

0.40 190

0.45 204

0.50 218

0.55 231

0.60 243
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0.65 255

0.70 266

0.75 278

0.80 289

0.85 299

0.90 310

0.95 320

1.00 330

1.05 340

1.10 349

1.15 359

1.20 368

1.25 377

1.30 386

1.35 395

1.40 404

1.45 412

1.50 421

1.55 429

1.60 438

1.65 446

1.70 454

1.75 462

1.80 470

1.85 477

1.90 485

1.95 493

2.00 500

2.05 508

2.10 515

2.15 522
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2.20 530

2.25 537

2.30 544

2.35 551

2.40 558

2.45 565

2.50 572

2.55 579

2.60 585

2.65 592

2.70 599

2.75 605

2.80 612

2.85 619

2.90 625

2.95 632

Vol = the cleaning capacity of the solvent cleaning machine (cubic meters). 

(b) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with §63.464(a) shall 

demonstrate compliance with the applicable 3-month rolling average monthly emission limit on a monthly basis as 

described in §63.465(b) and (c). 

(c) If the applicable 3-month rolling average emission limit is not met, an exceedance has occurred. All exceedances 

shall be reported as required in §63.468(h). 

(d) As an alternative to meeting the requirements in §63.463, each owner or operator of a continuous web cleaning 

machine can demonstrate an overall cleaning system control efficiency of 70 percent or greater using the procedures 

in §63.465(g). This demonstration can be made for either a single cleaning machine or for a solvent cleaning system 

that contains one or more cleaning machines and ancillary equipment, such as storage tanks and distillation units. If 

the demonstration is made for a cleaning system, the facility must identify any modifications required to the 

procedures in §63.465(g) and they must be approved by the Administrator. 

[59 FR 61805, Dec. 2, 1994, as amended at 64 FR 67801, Dec. 3, 1999; 65 FR 54423, Sept. 8, 2000] 

§ 63.465 Test methods.

(a) Except as provided in paragraphs (f) and (g) of this section for continuous web cleaning machines, each owner or 

operator of a batch vapor or in-line solvent cleaning machine complying with an idling emission limit standard in 

§63.463(b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall determine the idling emission rate of the solvent cleaning 

machine using Reference Method 307 in appendix A of this part. 
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(b) Except as provided in paragraph (g) of this section for continuous web cleaning machines, each owner or operator 

of a batch vapor or in-line solvent cleaning machine complying with §63.464 shall, on the first operating day of every 

month ensure that the solvent cleaning machine system contains only clean liquid solvent. This includes, but is not 

limited to, fresh unused solvent, recycled solvent, and used solvent that has been cleaned of soils. A fill line must be 

indicated during the first month the measurements are made. The solvent level within the machine must be returned 

to the same fill-line each month, immediately prior to calculating monthly emissions as specified in paragraph (c) of 

this section. The solvent cleaning machine does not have to be emptied and filled with fresh unused solvent prior to 

the calculations. 

(c) Except as provided in paragraphs (f) and (g) of this section for continuous web cleaning machines, each owner or 

operator of a batch vapor or in-line solvent cleaning machine complying with §63.464 shall, on the first operating day 

of the month, comply with the requirements specified in paragraphs (c)(1) through (3) of this section. 

(1) Using the records of all solvent additions and deletions for the previous monthly reporting period required under 

§63.464(a), determine solvent emissions (Ei) using equation 2 for cleaning machines with a solvent/air interface and 

equation 3 for cleaning machines without a solvent/air interface: 

where:

Ei

=the total halogenated HAP solvent emissions from the solvent cleaning machine during the most 

recent monthly reporting period i, (kilograms of solvent per square meter of solvent/air interface area per 

month). 

En=the total halogenated HAP solvent emissions from the solvent cleaning machine during the most 

recent monthly reporting period i, (kilograms of solvent per month). 

SAi

=the total amount of halogenated HAP liquid solvent added to the solvent cleaning machine during the 

most recent monthly reporting period i, (kilograms of solvent per month). 

LSRi

=the total amount of halogenated HAP liquid solvent removed from the solvent cleaning machine 

during the most recent monthly reporting period i, (kilograms of solvent per month). 

SSRi

=the total amount of halogenated HAP solvent removed from the solvent cleaning machine in solid 

waste, obtained as described in paragraph (c)(2) of this section, during the most recent monthly reporting 

period i, (kilograms of solvent per month). 

AREAi

=the solvent/air interface area of the solvent cleaning machine (square meters). 

(2) Determine SSRiusing the method specified in paragraph (c)(2)(i) or (c)(2)(ii) of this section. 

(i) From tests conducted using EPA reference method 25d. 

(ii) By engineering calculations included in the compliance report. 

(3) Determine the monthly rolling average, EA, for the 3-month period ending with the most recent reporting period 

using equation 4 for cleaning machines with a solvent/air interface or equation 5 for cleaning machines without a 

solvent/air interface: 
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Where:

EAi

=the average halogenated HAP solvent emissions over the preceding 3 monthly reporting periods, 

(kilograms of solvent per square meter of solvent/air interface area per month). 

EAn=the average halogenated HAP solvent emissions over the preceding 3 monthly reporting periods 

(kilograms of solvent per month). 

Ei

=halogenated HAP solvent emissions for each month (j) for the most recent 3 monthly reporting periods 

(kilograms of solvent per square meter of solvent/air interface area). 

En=halogenated HAP solvent emissions for each month (j) for the most recent 3 monthly reporting periods 

(kilograms of solvent per month). 

j=1 = the most recent monthly reporting period. 

j=2 = the monthly reporting period immediately prior to j=1. 

j=3 = the monthly reporting period immediately prior to j=2. 

(d) Each owner or operator of a batch vapor or in-line solvent cleaning machine using a dwell to comply with §63.463 

shall determine the appropriate dwell time for each part or parts basket using the procedure specified in paragraphs 

(d)(1) and (d)(2) of this section. 

(1) Determine the amount of time for the part or parts basket to cease dripping once placed in the vapor zone. The 

part or parts basket used for this determination must be at room temperature before being placed in the vapor zone. 

(2) The proper dwell time for parts to remain in the freeboard area above the vapor zone is no less than 35 percent of 

the time determined in paragraph (d)(1) of this section. 

(e) An owner or operator of a source shall determine their potential to emit from all solvent cleaning operations, using 

the procedures described in paragraphs (e)(1) through (e)(3) of this section. A facility's total potential to emit is the 

sum of the HAP emissions from all solvent cleaning operations, plus all HAP emissions from other sources within the 

facility. 

(1) Determine the potential to emit for each individual solvent cleaning using equation 6. 

PTEi=Hi×Wi×SAIi(6) 

Where: 

PTEi

=the potential to emit for solvent cleaning machine i (kilograms of solvent per year). 

Hi

=hours of operation for solvent cleaning machine i (hours per year). 

=8760 hours per year, unless otherwise restricted by a Federally enforceable requirement. 

Wi

=the working mode uncontrolled emission rate (kilograms per square meter per hour). 
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=1.95 kilograms per square meter per hour for batch vapor and cold cleaning machines. 

=1.12 kilograms per square meter per hour for in-line cleaning machines. 

SAIi

= solvent/air interface area of solvent cleaning machine i (square meters). Section 63.461 defines the 

solvent/air interface area for those machines that have a solvent/air interface. Cleaning machines that do 

not have a solvent/air interface shall calculate a solvent/air interface area using the procedure in 

paragraph (e)(2) of this section. 

(2) Cleaning machines that do not have a solvent/air interface shall calculate a solvent/air interface area using 

equation 7. 

SAI=2.20 * (Vol)0.6 (7) 

Where: 

SAI=the solvent/air interface area (square meters). 

Vol=the cleaning capacity of the solvent cleaning machine (cubic meters). 

(3) Sum the PTEifor all solvent cleaning operations to obtain the total potential to emit for solvent cleaning operations 

at the facility. 

(f) Each owner or operator of a continuous web cleaning machine using a squeegee system to comply with 

§63.463(g)(3) shall determine the maximum product throughput using the method in this paragraph. The maximum 

product throughput for each squeegee type used at a facility must be determined prior to December 2, 1999, the 

compliance date for these units. 

(1) Conduct daily visual inspections of the continuous web part. This monitoring shall be conducted at the point where 

the continuous web part exits the squeegee system. It is not necessary for the squeegees to be new at the time 

monitoring is begun if the following two conditions are met: 

(i) The continuous web part leaving the squeegee system has no visible solvent film. 

(ii) The amount of continuous web that has been processed through the squeegees since the last replacement is 

known. 

(2) Continue daily monitoring until a visible solvent film is noted on the continuous web part. 

(3) Determine the length of continuous web product that has been cleaned using the squeegee since it was installed. 

(4) The maximum product throughput for the purposes of this rule is equal to the time it takes to clean 95 percent of 

the length of product determined in paragraph (f)(3) of this section. This time period, in days, may vary depending on 

the amount of continuous web product cleaned each day. 

(g) Each owner or operator of a continuous web cleaning machine demonstrating compliance with the alternative 

standard of §63.464(d) shall, on the first day of every month, ensure that the solvent cleaning machine contains only 

clean liquid solvent. This includes, but is not limited to, fresh unused solvent, recycled solvent, and used solvent that 

has been cleaned of soils. A fill-line must be indicated during the first month the measurements are made. The 

solvent level with the machine must be returned to the same fill-line each month, immediately prior to calculating 

overall cleaning system control efficiency emissions as specified in paragraph (h) in this section. The solvent cleaning 

machine does not need to be emptied and filled with fresh unused solvent prior to the calculation. 

(h) Each owner or operator of a continuous web cleaning machines complying with §63.464(d) shall, on the first 

operating day of the month, comply with the following requirements. 
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(1) Using the records of all solvent additions, solvent deletions, and solvent recovered from the carbon adsorption 

system for the previous monthly reporting period required under §63.467(e), determine the overall cleaning system 

control efficiency (Eo) using Equation 8 of this section as follows: 

Where:

Eo= overall cleaning system control efficiency. 

Ri

= the total amount of halogenated HAP liquid solvent recovered from the carbon adsorption system and 

recycled to the solvent cleaning system during the most recent monthly reporting period, i, (kilograms of 

solvent per month). 

Sai

= the total amount of halogenated HAP liquid solvent added to the solvent cleaning system during the 

most recent monthly reporting period, i, (kilograms of solvent per month). 

SSRi

= the total amount of halogenated HAP solvent removed from the solvent cleaning system in solid 

waste, obtained as described in paragraph (c)(2) of this section, during the most recent monthly reporting 

period, i, (kilograms of solvent per month). 

[59 FR 61805, Dec. 2, 1994, as amended at 64 FR 67801, Dec. 3, 1999; 65 FR 54423, Sept. 8, 2000] 

§ 63.466 Monitoring procedures.

(a) Except as provided in paragraph (g) of this section, each owner or operator of a batch vapor or in-line solvent 

cleaning machine complying with the equipment standards in §63.463(b)(1)(i), (b)(2)(i), (c)(1)(i), (c)(2)(i), (g)(1), or 

(g)(2) shall conduct monitoring and record the results on a weekly basis for the control devices, as appropriate, 

specified in paragraphs (a)(1) through (5) of this section. 

(1) If a freeboard refrigeration device is used to comply with these standards, the owner or operator shall use a 

thermometer or thermocouple to measure the temperature at the center of the air blanket during the idling mode. 

(2) If a superheated vapor system is used to comply with these standards, the owner or operator shall use a 

thermometer or thermocouple to measure the temperature at the center of the superheated solvent vapor zone while 

the solvent cleaning machine is in the idling mode. 

(3) If a squeegee system, air knife system, or combination squeegee and air knife system is used to comply with the 

requirements of §63.463(g) or (h), the owner or operator shall visually inspect the continuous web part exiting the 

solvent cleaning machine to ensure that no solvent film is visible on the part. 

(4) Except as provided in paragraph (a)(5) of this section, if a superheated part system is used to comply with the 

requirements of §63.463(g) or (h), the owner or operator shall use a thermometer, thermocouple, or other 

temperature measurement device to measure the temperature of the continuous web part while it is in the solvent 

cleaning machine. This measurement can also be taken at the exit of the solvent cleaning machine. 

(5) As an alternative to complying with paragraph (a)(4) of this section, the owner or operator can provide data, 

sufficient to satisfy the Administrator, that demonstrate that the part temperature remains above the boiling point of 

the solvent at all times that the part is within the continuous web solvent cleaning machine. This data could include 

design and operating conditions such as information supporting any exothermic reaction inherent in the processing. 

(b) Except as provided in paragraph (g) of this section, each owner or operator of a batch vapor or in-line solvent 

cleaning machine complying with the equipment standards of §63.463 (b)(1)(i), (b)(2)(i), (c)(1)(i), or (c)(2)(i) shall 
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conduct monitoring and record the results on a monthly basis for the control devices, as appropriate, specified in 

paragraphs (b)(1) and (b)(2) of this section. 

(1) If a cover (working-mode, downtime-mode, and/or idling-mode cover) is used to comply with these standards, the 

owner or operator shall conduct a visual inspection to determine if the cover is opening and closing properly, 

completely covers the cleaning machine openings when closed, and is free of cracks, holes, and other defects. 

(2) If a dwell is used, the owner or operator shall determine the actual dwell time by measuring the period of time that 

parts are held within the freeboard area of the solvent cleaning machine after cleaning. 

(c) Except as provided in paragraph (g) of this section, each owner or operator of a batch vapor or in-line solvent 

cleaning machine complying with the equipment or idling standards in §63.463 shall monitor the hoist speed as 

described in paragraphs (c)(1) through (c)(4) of this section. 

(1) The owner or operator shall determine the hoist speed by measuring the time it takes for the hoist to travel a 

measured distance. The speed is equal to the distance in meters divided by the time in minutes (meters per minute). 

(2) The monitoring shall be conducted monthly. If after the first year, no exceedances of the hoist speed are 

measured, the owner or operator may begin monitoring the hoist speed quarterly. 

(3) If an exceedance of the hoist speed occurs during quarterly monitoring, the monitoring frequency returns to 

monthly until another year of compliance without an exceedance is demonstrated. 

(4) If an owner or operator can demonstrate to the Administrator's satisfaction in the initial compliance report that the 

hoist cannot exceed a speed of 3.4 meters per minute (11 feet per minute), the required monitoring frequency is 

quarterly, including during the first year of compliance. 

(d) Except as provided in paragraph (g) of this section, each owner or operator of a batch vapor or in-line solvent 

cleaning machine complying with the equipment standards in §63.463 (b)(1)(i), (b)(2)(i), (c)(1)(i), or (c)(2)(i) using a 

reduced room draft shall conduct monitoring and record the results as specified in paragraph(d)(1) or (d)(2) of this 

section. 

(1) If the reduced room draft is maintained by controlling room parameters (i.e., redirecting fans, closing doors and 

windows, etc.), the owner or operator shall conduct an initial monitoring test of the windspeed and of room 

parameters, quarterly monitoring of windspeed, and weekly monitoring of room parameters as specified in 

paragraphs (d)(1)(i) and (d)(1)(ii) of this section. 

(i) Measure the windspeed within 6 inches above the top of the freeboard area of the solvent cleaning machine using 

the procedure specified in paragraphs (d)(1)(i)(A) through (d)(1)(i)(D) of this section. 

(A) Determine the direction of the wind current by slowly rotating a velometer or similar device until the maximum 

speed is located. 

(B) Orient a velometer in the direction of the wind current at each of the four corners of the machine. 

(C) Record the reading for each corner. 

(D) Average the values obtained at each corner and record the average wind speed. 

(ii) Monitor on a weekly basis the room parameters established during the initial compliance test that are used to 

achieve the reduced room draft. 

(2) If an enclosure (full or partial) is used to achieve a reduced room draft, the owner or operator shall conduct an 

initial monitoring test and, thereafter, monthly monitoring tests of the windspeed within the enclosure using the 

procedure specified in paragraphs (d)(2)(i) and (d)(2)(ii) of this section and a monthly visual inspection of the 

enclosure to determine if it is free of cracks, holes and other defects. 
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(i) Determine the direction of the wind current in the enclosure by slowly rotating a velometer inside the entrance to 

the enclosure until the maximum speed is located. 

(ii) Record the maximum wind speed. 

(e) Except as provided in paragraph (g) of this section, each owner or operator using a carbon adsorber to comply 

with this subpart shall measure and record the concentration of halogenated HAP solvent in the exhaust of the 

carbon adsorber weekly with a colorimetric detector tube. This test shall be conducted while the solvent cleaning 

machine is in the working mode and is venting to the carbon adsorber. The exhaust concentration shall be 

determined using the procedure specified in paragraphs (e)(1) through (e)(3) of this section. 

(1) Use a colorimetric detector tube designed to measure a concentration of 100 parts per million by volume of 

solvent in air to an accuracy of ±25 parts per million by volume. 

(2) Use the colorimetric detector tube according to the manufacturer's instructions. 

(3) Provide a sampling port for monitoring within the exhaust outlet of the carbon adsorber that is easily accessible 

and located at least 8 stack or duct diameters downstream from any flow disturbance such as a bend, expansion, 

contraction, or outlet; downstream from no other inlet; and 2 stack or duct diameters upstream from any flow 

disturbance such as a bend, expansion, contraction, inlet or outlet. 

(f) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the idling emission 

limit standards of §63.463 (b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall comply with the requirements specified in 

paragraphs (f)(1) and (f)(2) of this section. 

(1) If using controls listed in paragraphs (a) through (e) of this section, the owner or operator shall comply with the 

monitoring frequency requirements in paragraphs (a) through (e) of this section. 

(2) If using controls not listed in paragraphs (a) through (e) of this section, the owner or operator shall establish the 

monitoring frequency for each control and submit it to the Administrator for approval in the initial test report. 

(g) Each owner or operator using a control device listed in paragraphs (a) through (e) of this section can use 

alternative monitoring procedures approved by the Administrator. 

[59 FR 61805, Dec. 2, 1994, as amended at 64 FR 67802, Dec. 3, 1999] 

§ 63.467 Recordkeeping requirements.

(a) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the provisions of 

§63.463 shall maintain records in written or electronic form specified in paragraphs (a)(1) through (7) of this section 

for the lifetime of the machine. 

(1) Owner's manuals, or if not available, written maintenance and operating procedures, for the solvent cleaning 

machine and control equipment. 

(2) The date of installation for the solvent cleaning machine and all of its control devices. If the exact date for 

installation is not known, a letter certifying that the cleaning machine and its control devices were installed prior to, or 

on, November 29, 1993, or after November 29, 1993, may be substituted. 

(3) If a dwell is used to comply with these standards, records of the tests required in §63.465(d) to determine an 

appropriate dwell time for each part or parts basket. 

(4) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the idling emission 

limit standards of §63.463(b)(1)(ii), (b)(2)(ii), (c)(1)(ii), or (c)(2)(ii) shall maintain records of the initial performance test, 

including the idling emission rate and values of the monitoring parameters measured during the test. 
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(5) Records of the halogenated HAP solvent content for each solvent used in a solvent cleaning machine subject to 

the provisions of this subpart. 

(6) If a squeegee system is used to comply with these standards, records of the test required by §63.466(f) to 

determine the maximum product throughput for the squeegees and records of both the weekly monitoring required by 

§63.466(a)(3) for visual inspection and the length of continuous web product cleaned during the previous week. 

(7) If an air knife system or a combination squeegee and air knife system is used to comply with these standards, 

records of the determination of the proper operating parameter and parameter value for the air knife system. 

(b) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with §63.463 shall 

maintain records specified in paragraphs (b)(1) through (b)(4) of this section either in electronic or written form for a 

period of 5 years. 

(1) The results of control device monitoring required under §63.466. 

(2) Information on the actions taken to comply with §63.463(e) and (f). This information shall include records of 

written or verbal orders for replacement parts, a description of the repairs made, and additional monitoring conducted 

to demonstrate that monitored parameters have returned to accepted levels. 

(3) Estimates of annual solvent consumption for each solvent cleaning machine. 

(4) If a carbon adsorber is used to comply with these standards, records of the date and results of the weekly 

measurement of the halogenated HAP solvent concentration in the carbon adsorber exhaust required in §63.466(e). 

(c) Except as provided in paragraph (e) of this section for continuous web cleaning machines, each owner or operator 

of a batch vapor or in-line solvent cleaning machine complying with the provisions of §63.464 shall maintain records 

specified in paragraphs (c)(1) through (3) of this section either in electronic or written form for a period of 5 years. 

(1) The dates and amounts of solvent that are added to the solvent cleaning machine. 

(2) The solvent composition of wastes removed from cleaning machines as determined using the procedure 

described in §63.465(c)(2). 

(3) Calculation sheets showing how monthly emissions and the rolling 3-month average emissions from the solvent 

cleaning machine were determined, and the results of all calculations. 

(d) Each owner or operator of a solvent cleaning machine without a solvent/air interface complying with the provisions 

of §63.464 shall maintain records on the method used to determine the cleaning capacity of the cleaning machine. 

(e) Each owner or operator of a continuous web cleaning machine complying with the provisions of §63.464(d) shall 

maintain the following records in either electronic or written form for a period of 5 years. 

(1) The dates and amounts of solvent that are added to the solvent cleaning machine. 

(2) The dates and amounts of solvent that are recovered from the desorption of the carbon adsorber system. 

(3) The solvent composition of wastes removed from each cleaning machine as determined using the procedures in 

§63.465(c)(2). 

(4) Calculation sheets showing the calculation and results of determining the overall cleaning system control 

efficiency, as required by §63.465. 

[59 FR 61805, Dec. 2, 1994, as amended at 64 FR 67802, Dec. 3, 1999; 68 FR 37349, June 23, 2003] 
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§ 63.468 Reporting requirements.

(a) Each owner or operator of an existing solvent cleaning machine subject to the provisions of this subpart shall 

submit an initial notification report to the Administrator no later than August 29, 1995. This report shall include the 

information specified in paragraphs (a)(1) through (a)(6) of this section. 

(1) The name and address of the owner or operator. 

(2) The address (i.e., physical location) of the solvent cleaning machine(s). 

(3) A brief description of each solvent cleaning machine including machine type (batch vapor, batch cold, vapor in-line 

or cold in-line), solvent/air interface area, and existing controls. 

(4) The date of installation for each solvent cleaning machine or a letter certifying that the solvent cleaning machine 

was installed prior to, or after, November 29, 1993. 

(5) The anticipated compliance approach for each solvent cleaning machine. 

(6) An estimate of annual halogenated HAP solvent consumption for each solvent cleaning machine. 

(b) Each owner or operator of a new solvent cleaning machine subject to the provisions of this subpart shall submit 

an initial notification report to the Administrator. New sources for which construction or reconstruction had 

commenced and initial startup had not occurred before December 2, 1994, shall submit this report as soon as 

practicable before startup but no later than January 31, 1995. New sources for which the construction or 

reconstruction commenced after December 2, 1994, shall submit this report as soon as practicable before the 

construction or reconstruction is planned to commence. This report shall include all of the information required in 

§63.5(d)(1) of subpart A (General Provisions), with the revisions and additions in paragraphs (b)(1) through (b)(3) of 

this section. 

(1) The report shall include a brief description of each solvent cleaning machine including machine type (batch vapor, 

batch cold, vapor in-line, or cold-line), solvent/air interface area, and existing controls. 

(2) The report shall include the anticipated compliance approach for each solvent cleaning machine. 

(3) In lieu of §63.5(d)(1)(ii)(H) of subpart A of this part, the owner or operator must report an estimate of annual 

halogenated HAP solvent consumption for each solvent cleaning machine. 

(c) Each owner or operator of a batch cold solvent cleaning machine subject to the provisions of this subpart shall 

submit a compliance report to the Administrator. For existing sources, this report shall be submitted to the 

Administrator no later than 150 days after the compliance date specified in §63.460(d). For new sources, this report 

shall be submitted to the Administrator no later than 150 days after startup or May 1, 1995, whichever is later. This 

report shall include the requirements specified in paragraphs (c)(1) through (c)(4) of this section. 

(1) The name and address of the owner or operator. 

(2) The address (i.e., physical location) of the solvent cleaning machine(s). 

(3) A statement, signed by the owner or operator of the solvent cleaning machine, stating that the solvent cleaning 

machine for which the report is being submitted is in compliance with the provisions of this subpart. 

(4) The compliance approach for each solvent cleaning machine. 

(d) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the provisions of 

§63.463 shall submit to the Administrator an initial statement of compliance for each solvent cleaning machine. For 

existing sources, this report shall be submitted to the Administrator no later than 150 days after the compliance date 
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specified in §63.460(d). For new sources, this report shall be submitted to the Administrator no later than 150 days 

after startup or May 1, 1995, whichever is later. This statement shall include the requirements specified in paragraphs 

(d)(1) through (d)(6) of this section. 

(1) The name and address of the owner or operator. 

(2) The address (i.e., physical location) of the solvent cleaning machine(s). 

(3) A list of the control equipment used to achieve compliance for each solvent cleaning machine. 

(4) For each piece of control equipment required to be monitored, a list of the parameters that are monitored and the 

values of these parameters measured on or during the first month after the compliance date. 

(5) Conditions to maintain the wind speed requirements of §63.463(e)(2)(ii), if applicable. 

(6) Each owner or operator of a solvent cleaning machine complying with the idling emission limit standards of 

§63.463(b)(1)(ii), (b)(2)(ii), (c)(1)(ii), and (c)(2)(ii) shall submit a test report for tests of idling emissions meeting the 

specifications in Method 307 of appendix A to this subpart. This report shall comply with the requirements specified in 

paragraphs (d)(6)(i) through (d)(6)(iv) of this section. 

(i) This test must be on the same specific model cleaner used at the source. The test can be done by the owner or 

operator of the affected machine or can be supplied by the vendor of that solvent cleaning machine or a third party. 

(ii) This report must clearly state the monitoring parameters, monitoring frequency and the delineation of 

exceedances for each parameter. 

(iii) If a solvent cleaning machine vendor or third party test report is used to demonstrate compliance, it shall include 

the following for the solvent cleaning machine tested: Name of person(s) or company that performed the test, model 

name, the date the solvent cleaning machine was tested, serial number, and a diagram of the solvent cleaning 

machine tested. 

(iv) If a solvent cleaning machine vendor or third party test report is used, the owner or operator of the solvent 

cleaning machine shall comply with the requirements specified in either paragraphs (d)(6)(iv)(A) and (d)(6)(iv)(B) of 

this section. 

(A) Submit a statement by the solvent cleaning machine vendor that the unit tested is the same as the unit the report 

is being submitted for. 

(B) Demonstrate to the Administrator's satisfaction that the solvent emissions from the solvent cleaning machine for 

which the test report is being submitted are equal to or less than the solvent emissions from the solvent cleaning 

machine in the vendor test report. 

(7) If a carbon adsorber is used to comply with these standards, the date and results of the weekly measurement of 

the halogenated HAP solvent concentration in the carbon adsorber exhaust required in §63.466(e). 

(e) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the provisions of 

§63.464 shall submit to the Administrator an initial statement of compliance for each solvent cleaning machine. For 

existing sources, this report shall be submitted to the Administrator no later than 150 days after the compliance date 

specified in §63.460(d). For new sources, this report shall be submitted to the Administrator no later than 150 days 

after startup or May 1, 1995, whichever is later. The statement shall include the information specified in paragraphs 

(e)(1) through (e)(4) of this section. 

(1) The name and address of the solvent cleaning machine owner or operator. 

(2) The address of the solvent cleaning machine(s). 
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(3) The solvent/air interface area for each solvent cleaning machine or, for cleaning machines without a solvent/air 

interface, a description of the method used to determine the cleaning capacity and the results. 

(4) The results of the first 3-month average emissions calculation. 

(f) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the provisions of 

§63.463 shall submit an annual report by February 1 of the year following the one for which the reporting is being 

made. This report shall include the requirements specified in paragraphs (f)(1) through (f)(3) of this section. 

(1) A signed statement from the facility owner or his designee stating that, “All operators of solvent cleaning machines 

have received training on the proper operation of solvent cleaning machines and their control devices sufficient to 

pass the test required in §63.463(d)(10).” 

(2) An estimate of solvent consumption for each solvent cleaning machine during the reporting period. 

(3) The reports required under paragraphs (f) and (g) of this section can be combined into a single report for each 

facility. 

(g) Each owner or operator of a batch vapor or in-line solvent cleaning machine complying with the provisions of 

§63.464 shall submit a solvent emission report every year. This solvent emission report shall contain the 

requirements specified in paragraphs (g)(1) through (g)(4) of this section. 

(1) The size and type of each unit subject to this subpart (solvent/air interface area or cleaning capacity). 

(2) The average monthly solvent consumption for the solvent cleaning machine in kilograms per month. 

(3) The 3-month monthly rolling average solvent emission estimates calculated each month using the method as 

described in §63.465(c). 

(4) The reports required under paragraphs (f) and (g) of this section can be combined into a single report for each 

facility. 

(h) Each owner or operator of a batch vapor or in-line solvent cleaning machine shall submit an exceedance report to 

the Administrator semiannually except when, the Administrator determines on a case-by-case basis that more 

frequent reporting is necessary to accurately assess the compliance status of the source or, an exceedance occurs. 

Once an exceedance has occurred the owner or operator shall follow a quarterly reporting format until a request to 

reduce reporting frequency under paragraph (i) of this section is approved. Exceedance reports shall be delivered or 

postmarked by the 30th day following the end of each calendar half or quarter, as appropriate. The exceedance 

report shall include the applicable information in paragraphs (h) (1) through (3) of this section. 

(1) Information on the actions taken to comply with §63.463 (e) and (f). This information shall include records of 

written or verbal orders for replacement parts, a description of the repairs made, and additional monitoring conducted 

to demonstrate that monitored parameters have returned to accepted levels. 

(2) If an exceedance has occurred, the reason for the exceedance and a description of the actions taken. 

(3) If no exceedances of a parameter have occurred, or a piece of equipment has not been inoperative, out of control, 

repaired, or adjusted, such information shall be stated in the report. 

(i) An owner or operator who is required to submit an exceedance report on a quarterly (or more frequent) basis may 

reduce the frequency of reporting to semiannual if the conditions in paragraphs (i)(1) through (i)(3) of this section are 

met. 

(1) The source has demonstrated a full year of compliance without an exceedance. 
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(2) The owner or operator continues to comply with all relevant recordkeeping and monitoring requirements specified 

subpart A (General Provisions) and in this subpart. 

(3) The Administrator does not object to a reduced frequency of reporting for the affected source as provided in 

paragraph (e)(3)(iii) of subpart A (General Provisions). 

(j) [Reserved] 

(k) Each owner or operator of a solvent cleaning machine requesting an equivalency determination, as described in 

§63.469 shall submit an equivalency request report to the Administrator. For existing sources, this report must be 

submitted to the Administrator no later than June 3, 1996. For new sources, this report must be submitted and 

approved by the Administrator prior to startup. 

[59 FR 61805, Dec. 2, 1994; 60 FR 29485, June 5, 1995, as amended at 64 FR 69643, Dec. 14, 1999; 71 FR 75346, 

Dec. 19, 2005] 

§ 63.469 Equivalent methods of control.

Upon written application, the Administrator may approve the use of equipment or procedures after they have been 

satisfactorily demonstrated to be equivalent, in terms of reducing emissions of methylene chloride, perchloroethylene, 

trichloroethylene, 1,1,1-trichloroethane, carbon tetrachloride or chloroform to the atmosphere, to those prescribed for 

compliance within a specified paragraph of this subpart. The application must contain a complete description of the 

equipment or procedure and the proposed equivalency testing procedure and the date, time, and location scheduled 

for the equivalency demonstration. 

§ 63.470 Implementation and enforcement.

(a) This subpart can be implemented and enforced by the U.S. EPA, or a delegated authority such as the applicable 

State, local, or Tribal agency. If the U.S. EPA Administrator has delegated authority to a State, local, or Tribal agency, 

then that agency, in addition to the U.S. EPA, has the authority to implement and enforce this subpart. Contact the 

applicable U.S. EPA Regional Office to find out if implementation and enforcement of this subpart is delegated to a 

State, local, or Tribal agency. 

(b) In delegating implementation and enforcement authority of this subpart to a State, local, or Tribal agency under 

subpart E of this part, the authorities contained in paragraph (c) of this section are retained by the Administrator of 

U.S. EPA and cannot be transferred to the State, local, or Tribal agency. 

(c) The authorities that cannot be delegated to State, local, or Tribal agencies are as specified in paragraphs (c)(1) 

through (4) of this section. 

(1) Approval of alternatives to the requirements in §§63.460, 63.462(a) through (d), and 63.463 through 63.464 

(except for the authorities in §63.463(d)(9)). Use the procedures in §63.469 to request the use of alternative 

equipment or procedures. 

(2) Approval of major alternatives to test methods under §63.7(e)(2)(ii) and (f), as defined in §63.90, and as required 

in this subpart. 

(3) Approval of major alternatives to monitoring under §63.8(f), as defined in §63.90, and as required in this subpart. 

(4) Approval of major alternatives to recordkeeping and reporting under §63.10(f), as defined in §63.90, and as 

required in this subpart. 

[68 FR 37349, June 23, 2003] 

§ 63.471 Facility-wide standards.
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(a) Each owner or operator of an affected facility shall comply with the requirements specified in this section. For 

purposes of this section, affected facility means all solvent cleaning machines, except solvent cleaning machines 

used in the manufacture and maintenance of aerospace products, solvent cleaning machines used in the 

manufacture of narrow tubing, and continuous web cleaning machines, located at a major source that are subject to 

the facility-wide limits in paragraph (b)(2) of this section, and for area sources, affected facility means all solvent 

cleaning machines, except cold batch cleaning machines, located at an area source that are subject to the facilitywide limits in paragraph (b)(2) of this section. 

(b)(1) Each owner or operator of an affected facility must maintain a log of solvent additions and deletions for each 

solvent cleaning machine. 

(2) Each owner or operator of an affected facility must ensure that the total emissions of perchloroethylene (PCE), 

trichloroethylene (TCE) and methylene chloride (MC) used at the affected facility are equal to or less than the 

applicable facility-wide 12-month rolling total emission limit presented in Table 1 of this section as determined using 

the procedures in paragraph (c) of this section. 

Table 1—Facility-wide Emission Limits for Facilities With Solvent Cleaning Machines 

Solvents emitted

Facility-wide annual emission limits in 

kg—for general population 

degreasing machines

Facility-wide annual 

emission limit in kg for 

military depot 

maintenance facilities

PCE onlya 4,800 8,000

TCE only 14,100 23,500

MC only 60,000 100,000

Multiple solvents—Calculate the 

MC-weighted emissions using 

equation 1

60,000 100,000

a

PCE emission limit calculated using CalEPA URE. 

Note: In the equation, the facility emissions of PCE and TCE are weighted according to their carcinogenic 

potency relative to that of MC. The value of A is 12.5. The value for B is 4.25. 

Where:

WE = Weighted 12-month rolling total emissions in kg (lbs). 

PCE = 12-month rolling total PCE emissions from all solvent cleaning machines at the facility in kg (lbs). 

TCE = 12-month rolling total TCE emission from all solvent cleaning machines at the facility in kg (lbs). 

MC = 12-month rolling total MC emissions from all solvent cleaning machines at the facility in kg (lbs). 

(c) Each owner or operator of an affected facility shall on the first operating day of every month, demonstrate 

compliance with the applicable facility-wide emission limit on a 12-month rolling total basis using the procedures in 

paragraphs (c)(1) through (5) of this section. For purposes of this paragraph, “each solvent cleaning machine” means 

each solvent cleaning machine that is part of an affected facility regulated by this section. 
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(1) Each owner or operator of an affected facility shall, on the first operating day of every month, ensure that each 

solvent cleaning machine system contains only clean liquid solvent. This includes, but is not limited to, fresh unused 

solvent, recycled solvent, and used solvent that has been cleaned of soiled materials. A fill line must be indicated 

during the first month the measurements are made. The solvent level within the machine must be returned to the 

same fill-line each month, immediately prior to calculating monthly emissions as specified in paragraphs (c)(2) and (3) 

of this section. The solvent cleaning machine does not have to be emptied and filled with fresh unused solvent prior 

to the calculations. 

(2) Each owner or operator of an affected facility shall, on the first operating day of the month, using the records of all 

solvent additions and deletions for the previous month, determine solvent emissions (Eunit) from each solvent cleaning 

machine using equation 10: 

Where:

Eunit= the total halogenated HAP solvent emissions from the solvent cleaning machine during the most 

recent month i, (kilograms of solvent per month). 

SAi

= the total amount of halogenated HAP liquid solvent added to the solvent cleaning machine during 

the most recent month i, (kilograms of solvent per month). 

LSRi

= the total amount of halogenated HAP liquid solvent removed from the solvent cleaning machine 

during the most recent month i, (kilograms of solvent per month). 

SSRi

= the total amount of halogenated HAP solvent removed from the solvent cleaning machine in solid 

waste, obtained as described in paragraph (c)(3) of this section, during the most recent month i, 

(kilograms of solvent per month). 

(3) Each owner or operator of an affected facility shall, on the first operating day of the month, determine SSRiusing 

the method specified in paragraph (c)(3)(i) or (c)(3)(ii) of this section. 

(i) From tests conducted using EPA reference method 25d. 

(ii) By engineering calculations included in the compliance report. 

(4) Each owner or operator of an affected facility shall on the first operating day of the month, after 12 months of 

emissions data are available, determine the 12-month rolling total emissions, ETunit, for the 12-month period ending 

with the most recent month using equation 11: 

Where:

ETunit= the total halogenated HAP solvent emissions over the preceding 12 months, (kilograms of solvent 

emissions per 12-month period). 

Eunit= halogenated HAP solvent emissions for each month (j) for the most recent 12 months (kilograms of 

solvent per month). 
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(5) Each owner or operator of an affected facility shall on the first operating day of the month, after 12 months of 

emissions data are available, determine the 12-month rolling total emissions, ETfacility, for the 12-month period ending 

with the most recent month using equation 12: 

Where:

ETfacility= the total halogenated HAP solvent emissions over the preceding 12 months for all cleaning 

machines at the facility, (kilograms of solvent emissions per 12-month period). 

ETunit= the total halogenated HAP solvent emissions over the preceding 12 months for each unit j, where i 

equals the total number of units at the facility (kilograms of solvent emissions per 12-month period). 

(d) If the applicable facility-wide emission limit presented in Table 1 of paragraph (b)(2) is not met, an exceedance 

has occurred. All exceedances shall be reported as required in §63.468(h). 

(e) Each owner or operator of an affected facility shall maintain records specified in paragraphs (e)(1) through (3) of 

this section either in electronic or written form for a period of 5 years. For purposes of this paragraph, “each solvent 

cleaning machine” means each solvent cleaning machine that is part of an affected facility regulated by this section. 

(1) The dates and amounts of solvent that are added to each solvent cleaning machine. 

(2) The solvent composition of wastes removed from each solvent cleaning machines as determined using the 

procedure described in paragraph (c)(3) of this section. 

(3) Calculation sheets showing how monthly emissions and the 12-month rolling total emissions from each solvent 

cleaning machine were determined, and the results of all calculations. 

(f) Each owner or operator of an affected facility shall submit an initial notification report to the Administrator no later 

than May 3, 2010. This report shall include the information specified in paragraphs (f)(1) through (5) of this section. 

(1) The name and address of the owner or operator of the affected facility. 

(2) The address ( i.e. , physical location) of the solvent cleaning machine(s) that is part of an affected facility 

regulated by this section. 

(3) A brief description of each solvent cleaning machine at the affected facility including machine type (batch vapor, 

batch cold, vapor in-line or cold in-line), solvent/air interface area, and existing controls. 

(4) The date of installation for each solvent cleaning machine. 

(5) An estimate of annual halogenated HAP solvent consumption for each solvent cleaning machine. 

(g) Each owner or operator of an affected facility shall submit to the Administrator an initial statement of compliance 

on or before May 3, 2010. The statement shall include the information specified in paragraphs (g)(1) through (g)(3) of 

this section. 

(1) The name and address of the owner or operator of the affected facility. 

(2) The address ( i.e. , physical location) of each solvent cleaning machine that is part of an affected facility regulated 

by this section. 
McDowell Enterprises, Inc. Page 96 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

(3) The results of the first 12-month rolling total emissions calculation. 

(h) Each owner or operator of an affected facility shall submit a solvent emission report every year. This solvent 

emission report shall contain the requirements specified in paragraphs (h)(1) through (h)(3) of this section. 

(1) The average monthly solvent consumption for the affected facility in kilograms per month. 

(2) The 12-month rolling total solvent emission estimates calculated each month using the method as described in 

paragraph (c) of this section. 

(3) This report can be combined with the annual report required in §63.468(f) and (g) into a single report for each 

facility. 

[72 FR 25158, May 3, 2007] 

Appendix A to Subpart T of Part 63—Test of Solvent Cleaning Procedures

General Questions

___ 1. What is the maximum allowable speed for parts entry and removal? 

A. 8.5 meters per minute (28 feet per minute). 

B. 3.4 meters per minute (11 feet per minute). 

C. 11 meters per minute (36 feet per minute). 

D. No limit. 

___ 2. How do you ensure that parts enter and exit the solvent cleaning machine at the speed required in the 

regulation? 

A. Program on computerized hoist monitors speed. 

B. Can judge the speed by looking at it. 

C. Measure the time it takes the parts to travel a measured distance. 

___ 3. Identify the sources of air disturbances. 

A. Fans 

B. Open doors 

C. Open windows 

D. Ventilation vents 

E. All of the above 

___ 4. What are the three operating modes? 

A. Idling, working and downtime 
McDowell Enterprises, Inc. Page 97 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

B. Precleaning, cleaning, and drying 

C. Startup, shutdown, off 

D. None of the above 

___ 5. When can parts or parts baskets be removed from the solvent cleaning machine? 

A. When they are clean 

B. At any time 

C. When dripping stops 

D. Either A or C is correct 

___ 6. How must parts be oriented during cleaning? 

A. It does not matter as long as they fit in the parts basket. 

B. So that the solvent pools in the cavities where the dirt is concentrated. 

C. So that solvent drains from them freely. 

___ 7. During startup, what must be turned on first, the primary condenser or the sump heater? 

A. Primary condenser 

B. Sump heater 

C. Turn both on at same time 

D. Either A or B is correct 

___ 8. During shutdown, what must be turned off first, the primary condenser or the sump heater? 

A. Primary condenser 

B. Sump heater 

C. Turn both off at same time 

D. Either A or B is correct 

___ 9. In what manner must solvent be added to and removed from the solvent cleaning machine? 

A. With leak proof couplings 

B. With the end of the pipe in the solvent sump below the liquid solvent surface. 

C. So long as the solvent does not spill, the method does not matter. 

D. A and B 
McDowell Enterprises, Inc. Page 98 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

___ 10. What must be done with waste solvent and still and sump bottoms? 

A. Pour down the drain 

B. Store in closed container 

C. Store in a bucket 

D. A or B 

___ 11. What types of materials are prohibited from being cleaned in solvent cleaning machines using halogenated 

HAP solvents? 

A. Sponges 

B. Fabrics 

C. Paper 

D. All of the above 

Control Device Specific Questions

[ ] Freeboard Refrigeration Device 

___ 1. What temperature must the FRD achieve? 

A. Below room temperature 

B. 50 °F 

C. Below the solvent boiling point 

D. 30 percent below the solvent boiling point 

[ ] Working-Mode Cover 

___ 2. When can a cover be open? 

A. While parts are in the cleaning machine 

B. During parts entry and removal 

C. During maintenance 

D. During measurements for compliance purposes 

E. A and C 

F. B, C, and D 

___ 3. Covers must be maintained in what condition? 
McDowell Enterprises, Inc. Page 99 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

A. Free of holes 

B. Free of cracks 

C. So that they completely seal cleaner opening 

D. All of the above 

[ ] Dwell 

___ 4. Where must the parts be held for the appropriate dwell time? 

A. In the vapor zone 

B. In the freeboard area above the vapor zone 

C. Above the cleaning machine 

D. In the immersion sump 

Answers 

General Questions

1. B 

2. A or C 

3. E 

4. A 

5. C 

6. C 

7. A 

8. B 

9. D 

10. B 

11. D 

Control Device Specific Questions

1. D 

2. F 

3. D 
McDowell Enterprises, Inc. Page 100 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

4. B 

[59 FR 61818, Dec. 2, 1994; 60 FR 29485, June 5, 1995] 

Appendix B to Subpart T of Part 63—General Provisions Applicability to 

Subpart T

Applies to 

subpart T

Reference

BCC BVI

Comments

63.1(a) (1)–

(3)

Yes Yes

63.1(a)(4) Yes Yes Subpart T (this appendix) specifies applicability of each paragraph in subpart A 

to subpart T.

63.1(a)(5) No No

63.1(a) (6)–

(8)

Yes Yes

63.1(a)(9) No No

63.1(a)(10) Yes Yes

63.1(a)(11) No No Subpart T allows submittal of notifications and reports through the U.S. mail, 

fax, and courier. Subpart T requires that the postmark for notifications and 

reports submitted through the U.S. mail or other non-Governmental mail 

carriers be on or before deadline specified in an applicable requirement.

63.1(a) 

(12)–(14)

Yes Yes

63.1(b)(1) No No Subpart T specifies applicability.

63.1(b)(2) No Yes

63.1(b)(3) No No Subpart T requires that a record of halogenated cleaning machine applicability 

determination be kept on site for 5 years, or until the cleaning machine changes 

its operations. The record shall be sufficiently detailed to allow the Administrator 

to make a finding about the source's applicability status with regard to subpart 

T.

63.1(c)(1) Yes Yes

63.1(c)(2) Yes Yes Subpart T, §63.460(h) exempts area sources subject to this subpart from the 

obligation to obtain Title V operating permits.

63.1(c)(3) No No

63.1(c)(4) Yes Yes

63.1(c)(5) Yes Yes Subpart T does not require continuous monitoring systems (CMS) or 

continuous opacity monitoring systems. Therefore, notifications and 

requirements for CMS and COMS specified in subpart A do not apply to subpart 
McDowell Enterprises, Inc. Page 101 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

T.

63.1(d) No No

63.1(e) No Yes

63.2 Yes Yes Subpart T definitions (§63.461) for existing and new overlap with the definitions 

for existing source and new source in subpart A (§63.2). Both subpart A and T 

also define Administrator.

63.3(a)–(c) Yes Yes

63.4(a) (1)–

(3)

Yes Yes

63.4(a)(4) No No

63.4(a)(5) Yes Yes

63.4(b)–(c) Yes Yes

63.5(a)(1) Yes Yes

63.5(a)(2) Yes Yes

63.5(b)(1) Yes Yes

63.5(b)(2) No No

63.5(b)(3) No No Subpart T overrides the requirement for approval prior to constructing a new or 

reconstructing an existing major source.

63.5(b)(4)–

(6)

Yes Yes

63.5(c) No No

63.5 (d)–(f) No No Subpart T overrides the requirement to submit an application for approval of 

construction or reconstruction of a halogenated solvent cleaning machine.

63.6(a) Yes Yes

63.6(b) (1)–

(5)

Yes Yes Subpart T, §63.460, specifies compliance dates.

63.6(b)(6) No No

63.6(b)(7) No No Subpart T has the same requirements for affected halogenated HAP solvent 

cleaning machine subcategories that are located at area sources as it does for 

those located at major sources.

63.6(c)(1)–

(2)

Yes Yes Subpart T allows 3 years from the date of promulgation for both area and major 

existing sources to comply.

63.6(c) (3)–

(4)

No No
McDowell Enterprises, Inc. Page 102 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

63.6(c)(5) Yes Yes Subpart T has the same requirements for affected halogenated HAP solvent 

cleaning machine subcategories that are located at area sources as it does for 

those located at major sources.

 Subpart T allows 3 years from the date of promulgation for both area and major 

existing sources to comply.

63.6(d) No No

63.6(e)(1)–

(2)

Yes Yes

63.6(e)(3) No No Subpart T overrides the requirement of a startup, shutdown, and malfunction 

plan. Subpart T specifies startup and shutdown procedures to be followed by an 

owner or operator for batch vapor and in-line cleaning machines.

63.6(f)–(g) Yes Yes

63.6(h) No No Subpart T does not require compliance with an opacity or visible emission 

standard.

63.6(i) (1)–

(14)

Yes Yes

63.6(i)(15) No No

63.6(i)(16) Yes Yes

63.6(j) Yes Yes

63.7(a) No Yes Subpart T gives owners or operators the option to perform an idling emission 

performance test as a way of demonstrating compliance. Other options are also 

available that do not require a performance test.

63.7(b) No Yes This is only required for those owners or operators that choose the idling 

emission standard as their compliance option.

63.7(c)(1) No Yes This is only required for those owners or operators that choose the idling 

emission standard as their compliance option.

63.7(c) (2)–

(3)

No No Subpart T does not require a site-specific test plan for the idling emission 

performance test.

63.7(c)(4) No No Subpart T does not require a performance test that involves the retrieval of gas 

samples, and therefore this does not apply.

63.7(d) No No Requirements do not apply to the idling emission performance test option.

63.7(e) No Yes

63.7(f) No Yes

63.7(g) No Yes Subpart T specifies what is required to demonstrate idling emission standard 

compliance through the use of the Environmental Protection Agency test 

method 307 and control device monitoring. Reports and records of testing and 

monitoring are required for compliance verification. Three runs of the test are 

required for compliance, as specified in §63.7(e) of subpart A.
McDowell Enterprises, Inc. Page 103 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

63.7(h) No No Subpart T does not require the use of a performance test to comply with the 

standard. The idling emission standard option (which requires an idling 

emission performance test) is an alternative option offered to owners or 

operators of batch vapor and in-line cleaning machines for compliance 

flexibility.

63.8 (a)–(b) Yes Yes

63.8 (c)–(e) No No Subpart T does not require the use of continuous monitoring systems to 

demonstrate compliance.

63.8(f) Yes Yes

63.8(g) No No Subpart T does not require continuous opacity monitoring systems and 

continuous monitoring systems data.

63.9(a) (1)–

(4)

Yes Yes

63.9(b)(1) Yes Yes

63.9(b)(2) Yes Yes Subpart T includes all of those requirements stated in subpart A, except that 

subpart A also requires a statement as to whether the affected source is a 

major or an area source, and an identification of the relevant standard 

(including the source's compliance date). Subpart T also has some more 

specific information requirements specific to the affected source (see subpart T, 

§§63.468(a)–(b)).

63.9(b)(3) Yes Yes The subpart A and subpart T initial notification reports differ (see above).

63.9(b)(4) No No Subpart T does not require an application for approval of construction or 

reconstruction.

63.9(b)(5) Yes Yes

63.9(c) Yes Yes

63.9(d) Yes Yes

63.9(e) Yes Yes Under subpart T, this requirement only applies to owners or operators choosing 

to comply with the idling emissions standard.

63.9(f) No No Subpart T does not require opacity or visible emission observations.

63.9(g)(1) No No Subpart T does not require the use of continuous monitoring systems or 

continuous opacity monitoring systems.

63.9(h) No No Section 63.468 of subpart T requires an initial statement of compliance for 

existing sources to be submitted to the Administrator no later than 150 days 

after the compliance date specified in §63.460(d) of subpart T. For new 

sources, this report is to be submitted to the Administrator no later than 150 

days from the date specified in §63.460(c).

63.9(i) Yes Yes

63.9(j) Yes Yes
McDowell Enterprises, Inc. Page 104 of 104 

Elkhart, Indiana M039-26362-00413 

Permit Reviewer: Christina Lowry 

63.10(a) Yes Yes

63.10(b) No No Recordkeeping requirements are specified in subpart T.

63.10(c) 

(1)–(15)

No No Subpart T does not require continuous monitoring systems.

63.10(d)(1) Yes Yes

63.10(d)(2) No No Reporting requirements are specified in subpart T.

63.10(e) 

(l)–(2)

No No Subpart T does not require continuous emissions monitoring systems.

63.10(e)(3) No No Subpart T does not require continuous monitoring systems.

63.10(e)(4) No No Subpart T does not require continuous opacity monitoring systems.

63.10(f) Yes Yes

63.11(a) Yes Yes

63.11(b) No No Flares are not a control option under subpart T.

63.12 (a)–

(c)

Yes Yes

63.13 (a)–

(c)

Yes Yes

63.14 No No Subpart T requirements do not require the use of the test methods incorporated 

by reference in subpart A.

63.15(a)–

(b)

Yes Yes

BCC=Batch Cold Cleaning Machines. 

BVI=Batch Vapor and In-line Cleaning Machines. 

[59 FR 61818, Dec. 2, 1994; 60 FR 29485, June 5, 1995, as amended at 70 FR 75346, Dec. 19, 2005] 
 Page 1 of 9 

Indiana Department of Environmental Management

Office of Air Quality

Technical Support Document (TSD) for a 

Minor Source Operating Permit Renewal 

Source Background and Description 

Source Name: McDowell Enterprises, Inc. 

Source Location: 2010 Superior Street, Elkhart, Indiana 46515 

County: Elkhart 

SIC Code: 3471 

Operation Permit No.: MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry

 The Office of Air Quality (OAQ) has reviewed an application from McDowell Enterprises, Inc. 

 relating to the operation of a chromium electroplating source. 

History 

 On April 2, 2008, McDowell Enterprises, Inc. submitted an application to the OAQ requesting to 

 renew its operating permit. McDowell Enterprises was last issued a MSOP on January 6, 2003. 

Permitted Emission Units and Pollution Control Equipment

The source consists of the following permitted emission units and pollution control devices: 

(a) One (1) decorative chrome plating tank, identified as Tank 15N, constructed prior to 

December 16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 

2,000 amps and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, 

equipped with a composite mesh pad system as control, and exhausting to the south 

chromium stack. 

(b) One (1) hard chrome plating tank, identified as Tank 27N, constructed prior to December 16, 

1993, using a hexavalent chromium bath and having a rectifier capacity of 750 amps and a 

maximum cumulative rectifier capacity of 4,410,000 amp hours, equipped with a composite 

mesh pad system as control, and exhausting to the south chromium stack. 

(c) One (1) hard chrome plating tank, identified as Tank 3WB, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 3,000 amps 

and a maximum cumulative rectifier capacity of 17,640,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the south chromium stack. 

(d) One (1) hard chrome plating tank, identified as Tank 2WB, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 amps 

and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the south chromium stack. 

 
McDowell Enterprises, Inc. Page 2 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

 (e) One (1) hard chrome plating tank, identified as Tank 1NW, constructed prior to December 

 16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 6,000 

 amps and a maximum cumulative rectifier capacity of 35,280,000 amp-hours, equipped 

 with a composite mesh pad system as control, and exhausting to the north chromium 

 stack. 

 (f) One (1) hard chrome plating tank, identified as Tank 2NE, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 8,000 amps 

and a maximum cumulative rectifier capacity of 47,040,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the north chromium stack. 

(g) One (1) hard chrome plating tank, identified as Tank 2N, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 4,000 amps 

and a maximum cumulative rectifier capacity of 23,520,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the north chromium stack. 

(h) One (1) open top, batch vapor degreaser, constructed after 1980, capacity: 45.9 pounds 

of trichloroethylene per day. 

(i) Three (3) natural gas fired heaters, identified as A16320GCB, A03818GCB and 

A03833GCB, capacity: 0.075 million British thermal units per hour, each. 

(j) Eleven (11) polishing and buffing units, equipped with a dust collector, rated at 7.4 X 10-8

grain per actual cubic foot, exhausting inside the building. 

Emission Units and Pollution Control Equipment Constructed and/or operated without a permit.

There are no unpermitted facilities operating at this source during this review process. 

Emission Units and Pollution Control Equipment Removed from the Source 

(a) One (1) hard chrome plating tank, identified as Tank 3WA, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 amps 

and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the south chromium stack.

 (b) One (1) hard chrome plating tank, identified as Tank 1NE, constructed prior to December 

 16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 

 amps and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped 

 with a composite mesh pad system as control, and exhausting to the north chromium 

 stack. 

(c) One (1) hard chrome plating tank, identified as Tank 6E, constructed prior to December 

16, 1993, using a hexavalent chromium bath and having a rectifier capacity of 2,000 amps 

and a maximum cumulative rectifier capacity of 11,760,000 amp-hours, equipped with a 

composite mesh pad system as control, and exhausting to the north chromium stack. 

New Emission Units and Pollution Control Equipment

There are no new facilities proposed at this source during this review process. 
McDowell Enterprises, Inc. Page 3 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

Existing Approvals

 The source has been operating under MSOP No. 039-11719-00413, issued on January 6, 2003. 

Enforcement Issue 

 There are no enforcement actions pending. 

Emission Calculations 

Chromium emissions (Single HAP) from the biggest chromium electroplating source in Indiana are 

less than ten (10) tons per year and McDowell Enterprises, Inc. is a much smaller source in 

comparison. Therefore, no emission calculations were necessary for the chromium electroplating 

because the chromium emissions from this source will be less than ten (10) tons per year. 

See pages 1 through 4 of 4 of Appendix A of this document for detailed emissions calculations for 

all other facilities at this source. 

County Attainment Status 

The source is located in Elkhart County 

Pollutant Designation 

SO2 Better than national standards. 

CO Unclassifiable or attainment effective November 15, 1990. 

O3 Attainment effective July 19, 2007, for the 8-hour ozone standard.1

PM10 Unclassifiable effective November 15, 1990. 

NO2 Cannot be classified or better than national standards. 

Pb Not designated. 

1

Attainment effective October 18, 2000, for the 1-hour ozone standard for the South Bend-Elkhart area, 

including Elkhart County, and is a maintenance area for the 1-hour National Ambient Air Quality 

Standards (NAAQS) for purposes of 40 CFR 51, Subpart X*. The 1-hour standard was revoked effective 

June 15, 2005. Unclassifiable or attainment effective April 5, 2005, for PM2.5. 

(a) Ozone Standards 

(1) On October 25, 2006, the Indiana Air Pollution Control Board finalized a rule 

revision to 326 IAC 1-4-1 revoking the one-hour ozone standard in Indiana. 

(2) On September 6, 2007, the Indiana Air Pollution Control Board finalized a 

temporary emergency rule to re-designate Allen, Clark, Elkhart, Floyd, LaPorte, 

and St. Joseph as attainment for the 8-hour ozone standard. 

(3) On November 9, 2007, the Indiana Air Pollution Control Board finalized a 

temporary emergency rule to re-designate Boone, Clark, Elkhart, Floyd, LaPorte, 

Hamilton, Hancock, Hendricks, Johnson, Madison, Marion, Morgan, Shelby, and 

St. Joseph as attainment for the 8-hour ozone standard. 
McDowell Enterprises, Inc. Page 4 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

(4) Volatile organic compounds (VOC) and Nitrogen Oxides (NOx) are regulated 

under the Clean Air Act (CAA) for the purposes of attaining and maintaining the 

National Ambient Air Quality Standards (NAAQS) for ozone. Therefore, VOC and 

NOx emissions are considered when evaluating the rule applicability relating to 

ozone. Elkhart County has been designated as attainment or unclassifiable for 

ozone. Therefore, VOC and NOx emissions were reviewed pursuant to the 

requirements for Prevention of Significant Deterioration (PSD), 326 IAC 2-2. 

 (b) PM2.5 

Elkhart County has been classified as attainment for PM2.5. On May 8, 2008 U.S. EPA 

promulgated the requirements for Prevention of Significant Deterioration (PSD) for PM2.5 

emissions, and the effective date of these rules was July 15th, 2008. Indiana has three 

years from the publication of these rules to revise its PSD rules, 326 IAC 2-2, to include 

those requirements. The May 8, 2008 rule revisions require IDEM to regulate PM10 

emissions as a surrogate for PM2.5 emissions until 326 IAC 2-2 is revised. 

 (c) Other Criteria Pollutants 

 Elkhart County has been classified as attainment or unclassifiable in Indiana for sulfur 

 dioxide (SO2), carbon monoxide (CO), PM10, nitrogen dioxide (NO2) and lead (Pb). 

 Therefore, these emissions were reviewed pursuant to the requirements of Prevention of 

 Significant Deterioration (PSD), 326 IAC 2-2. 

 (d) Fugitive Emissions 

 Since this type of operation is not one of the twenty-eight (28) listed source categories 

 under 326 IAC 2-2 or 326 IAC 2-3, fugitive emissions are not counted toward the 

 determination of PSD and Emission Offset applicability. 

Potential to Emit 

 Pursuant to 326 IAC 2-1.1-1(16), Potential to Emit is defined as “the maximum capacity of a 

 stationary source or emissions unit to emit any air pollutant under its physical and operational 

 design. Any physical or operational limitation on the capacity of a source to emit an air 

 pollutant, including air pollution control equipment and restrictions on hours of operation or type 

 or amount of material combusted, stored, or processed shall be treated as part of its design if 

 the limitation is enforceable by the U. S. EPA, the department, or the appropriate local air 

 pollution control agency.” 

Pollutant Potential to Emit 

(tons/year) 
McDowell Enterprises, Inc. Page 5 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

PM 0.002 

PM10 0.007 

PM2.5 0.007 

SO2 0.001 

VOC 8.39 

CO 0.083 

NOx 0.099 

HAPs Potential To Emit

(tons/year) 

Benzene 2.07E-6 

Dichlorobenzene 1.18E-6 

Formaldehyde 7.39E-5 

Hexane 1.77E-3 

Toluene 3.35E-6 

Lead 4.93E-7 

Cadmium 1.08E-6 

Chromium Less than 10 

Manganese 3.74E-7 

Nickel 2.07E-6 

Trichloroethylene 8.38 

TOTAL Less than 18.4 

Actual Emissions 

No previous emission data has been received from the source. 

Potential To Emit

 The table below summarized the total potential to emit, reflecting all limits, of the significant emission 

 units. 
McDowell Enterprises, Inc. Page 6 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

Potential to Emit

(tons/year) 

Process/facility PM PM10 SO2 VOC CO NOX HAPs

Chromium 

Electroplating - - - - - - < 10 

Degreasing - - - 8.38 - - 8.38 

Heaters 0.002 0.007 0.001 0.005 0.083 0.099 0.002 

Polishing and 

Buffing 0.0002 0.0002 - - - - - 

Total Emissions 0.002 0.007 0.001 8.39 0.083 0.099 

< 10 individual 

<18.4 total 

Title V Major 

Source 

Threshold 

- 100 100 100 100 100 10 and 25 

PSD Major 

Source 

Threshold 

250 250 250 250 250 250 - 

(a) The potential to emit (as defined in 326 IAC 2-7-1(29)) of all criteria pollutants is still less 

than 100 tons per year. The source is not subject to the provisions of 326 IAC 2-7. 

Therefore, the source will be issued an MSOP Renewal. 

(b) The potential to emit (as defined in 326 IAC 2-7-1(29)) of any single HAP is less than ten (10) 

tons per year and/or the potential to emit of a combination of HAPs is less than twenty-five 

(25) tons per year. 

 (c) Since this type of operation is not one of the twenty-eight (28) listed source categories under 

 326 IAC 2-7. fugitive emissions are not counted toward the determination of Part 70 

 applicability. 

Federal Rule Applicability

 The following federal rules are applicable to the source: 

(a) There are no New Source Performance Standards (NSPS) (326 IAC 12 and 40 CFR Part 60) 

applicable to this source. 
McDowell Enterprises, Inc. Page 7 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

 (b) This source is subject to the National Emission Standards for Hazardous Air Pollutants for 

 Chromium Emissions from Hard and Decorative Chromium Electroplating and 

 Chromium Anodizing Tanks (40 CFR 63, Subpart N), which is incorporated by 

 reference as 326 IAC 20-8-1. 

 The six (6) hard chrome electroplating tanks, identified as Tanks 27N, 3WB, 2WB, 

 1NW, 2NE, and 2N, and the one (1) decorative chrome electroplating tank, identified as 

 Tank 15N, are subject to the NESHAP for Chromium Emissions from Hard and 

 Decorative Chromium Electroplating and Chromium Anodizing Tanks, (40 CFR 63.340, 

 Subpart N) because they are hard or decorative chromium electroplating tanks. 

 Nonapplicable portions of the NESHAP will not be included in the permit. The existing 

 affected source associated with the Chromium Emissions from Hard and Decorative 

 Chromium Electroplating and Chromium Anodizing Tanks is subject to the following 

 portions of 40 CFR 63, Subpart N: 

 (1) 40 CFR 63.341 

 (2) 40 CFR 63.342 

 (3) 40 CFR 63.342, Table 1 

 (4) 40 CFR 63.343(c)(1) 

 (5) 40 CFR 63.344 

 (6) 40 CFR 63.346 

 (7) 40 CFR 63.347 

 (8) 40 CFR 63.348 

 The provisions of 40 CFR 63, Subpart A - General Provisions, which are incorporated as 

 326 IAC 20-1-1, apply to the facility described in this section except when otherwise 

 specified in 40 CFR 63, Subpart N. 

 (c) This source is subject to the National Emission Standards for Hazardous Air Pollutants 

 for Halogenated Solvent Cleaning (40 CFR 63, Subpart T), which is incorporated by 

 reference as 326 IAC 20-6-1. 

 The open top, batch vapor degreaser is subject to the NESHAP, 40 CFR 63, Subpart T, 

because it is a batch vapor cleaning machine using a halogenated HAP solvent in total 

concentration greater than five percent (5%) as a cleaning agent. 

 Nonapplicable portions of the NESHAP will not be included in the permit. The existing 

 affected source associated with the Halogenated Solvent Cleaning is subject to the 

 following portions of 40 CFR 63, Subpart T: 

 (1) 40 CFR 63.460 

 (2) 40 CFR 63.461 

 (3) 40 CFR 63.463 

 (4) 40 CFR 63.464 

 (5) 40 CFR 63.465 

 (6) 40 CFR 63.466 

 (7) 40 CFR 63.467 

 (8) 40 CFR 63.468 

 (9) 40 CFR 63.469 

 (10) 40 CFR 63.470 

 (11) 40 CFR 63.471 
McDowell Enterprises, Inc. Page 8 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

 The provisions of 40 CFR 63, Subpart A - General Provisions, which are incorporated as 

 326 IAC 20-1-1, apply to the facility described in this section except when otherwise 

 specified in 40 CFR 63, Subpart T. 

 

State Rule Applicability - Entire Source

 (a) 326 IAC 2-2 - Prevention of Significant Deterioration 

 Construction of this source commenced prior to August 7, 1977; therefore, it was not subject 

 to the PSD requirements of 326 IAC 2-2. The unrestricted potential to emit each criteria 

 pollutant from this source is less than 250 tons per year and this source is not in one of the 

 twenty-eight (28) listed source categories. Therefore, the requirements of 326 IAC 2-2 are 

 still not applicable. 

 (b) 326 IAC 2-4.1-1 - New Source Toxics Control 

 The potential to emit each individual hazardous air pollutant (HAP) is less than ten (10) tons 

 per year and the potential to emit any combination of HAPs is less than twenty-five (25) tons 

 per year from the total of all facilities at this source. Therefore, this source will emit levels of 

 air toxics less than those which constitute a major source according to Section 112 of the 

 1990 Clean Air Act Amendments, and the requirements of 326 IAC 2-4.1-1, New Source 

 Toxics Control, are not applicable. 

 (c) 326 IAC 2-6 - Emission Reporting 

 This source is located in Elkhart County and the potential to emit VOC and NOX is less than 

 ten (10) tons per year and the potential to emit SO2, CO and PM10 is less than one hundred 

 (100) tons per year. Therefore, 326 IAC 2-6 does not apply. 

 (d) 326 IAC 5-1 - Opacity Limitations 

 Pursuant to 326 IAC 5-1-2 (Opacity Limitations), except as provided in 326 IAC 5-1-3 

 (Temporary alternative opacity limitations), opacity shall meet the following, unless otherwise 

 stated in this permit: 

 (1) Opacity shall not exceed an average of forty percent (40%) any one (1) six (6) minute 

 averaging period as determined in 326 IAC 5-1-4. 

 (2) Opacity shall not exceed sixty percent (60%) for more than a cumulative total of 

 fifteen (15) minutes (sixty (60) readings as measured according to 40 CFR 60, 

 Appendix A, Method 9 or fifteen (15) one (1) minute nonoverlapping integrated 

 averages for a continuous opacity monitor) in a six (6) hour period. 

State Rule Applicability - Individual Facilities

 (a) 326 IAC 6-3 - Particulate Emission Limitations for Manufacturing Processes 

 (1) Pursuant to 326 IAC 6-3-1(b)(14), effective June 12, 2002, the buffing and polishing 

 operations are exempt from the requirements of 326 IAC 6-3, Particulate Emission 

 Limitations for Manufacturing Processes, because the potential PM emissions from 

 the buffing and polishing are less than 0.551 pound per hour. 
McDowell Enterprises, Inc. Page 9 of 9 

Elkhart, Indiana MSOP 039-26362-00413 

Permit Reviewer: Christina Lowry 

 

 (2) Pursuant to 326 IAC 6-3-1(c)(6), this rule is not applicable to the chrome 

 electroplating operations because a particulate limit for the electroplating is 

 established in 326 IAC 20-8-1. 326 IAC 20-8-1 incorporates the federal regulation, 

 40 CFR 63, Subpart N into state regulation. 

 (b) 326 IAC 8-3-3 - Organic Solvent Degreasing Operations: Open Top Vapor Degreaser 

 Operation 

 The open top, batch vapor degreaser, constructed after 1980, is specifically subject to the 

 requirements of 326 IAC 8-3-3. 

 (c) 328 IAC 8-3-6 - Organic Solvent Degreasing Operations: Open Top Vapor Degreaser 

 Operation and Control Requirements 

 The one (1) open top, batch vapor degreaser has an air to solvent interface area of 10 square 

 feet, which is less than 10.8 square feet. Therefore, pursuant to 326 IAC 8-3-1(b), this source 

 is not subject to the requirements of 326 IAC 8-3-6. 

(d) A performance test demonstrating initial compliance for Tanks 1NW, 1NE, 2NE, 2N and 6E 

 was performed on July 15, 1997. 

During the initial performance test, it was determined that the average pressure drop across 

the composite mesh pad system was 5.2 inches of water and the average outlet chromium 

concentration is 0.00110 mg/dscm. 

(e) The Permittee is not required to further test Tanks 1NW, 1NE, 2NE, 2N and 6E by this permit. 

 However, the IDEM may require testing when necessary to determine if the Tanks 1NW, 

1NE, 2NE, 2N and 6E are in compliance. If testing is required by the IDEM, compliance with 

the limit specified in Condition D.2.3 shall be determined by a performance test conducted in 

accordance with 40 CFR 63.344 and Section C - Performance Testing. 

 (f) Any change, modification, or reconstruction of Tanks 1NW, 1NE, 2NE, 2N and 6E, the 

 composite mesh pad system or monitoring equipment may require additional performance 

 testing conducted in accordance with 40 CFR 63.344 and Section C - Performance Testing. 

Recommendation

The staff recommends to the Commissioner that the MSOP Renewal be approved. This 

recommendation is based on the following facts and conditions: 

Unless otherwise stated, information used in this review was derived from the application and 

additional information submitted by the applicant. 

An application for the purposes of this review was received on April 2, 2008. Additional 

information was received on July 24, 2008. 

Conclusion

The operation of this chromium electroplating source shall be subject to the conditions of the 

attached proposed Minor Source Operating Permit Renewal 039-26362-00413. 
Appendix A: Emission Calculations Page 1 o

Degreasing Operations

VOC and HAP Emission Calculations

Company Name: McDowell Enterprises, Inc.

Address City IN Zip: 2010 Superior Street, Elkhart, Indiana 46515

MSOP: 039-26362-00413

Reviewer: Christina Lowry

Date: August 4, 2008

Material Maximum Weight % Weight % VOC Trichloroethylene 

Consumption VOC Trichloroethylene Emissions Emissions 

(lbs/yr) (tons/yr) (tons/yr) 

Degreasing

Trichloroethylene 16754 100% 100% 8.38 8.38 

Total State Potential Emissions TOTALS: (tons/yr): 8.38 8.38 

METHODOLOGY

VOC/HAPs emission rate (tons/yr) = Material Usage (lbs/hr) * Weight % VOC/HAP * 8760 hrs/yr * 1 ton/2000 lbs
Appendix A: Emissions Calculations Page 2 of 4 

Natural Gas Combustion Only

MM BTU/HR <100

Natural Gas Boiler

Company Name: McDowell Enterprises, Inc.

Address City IN Zip: 2010 Superior Street, Elkhart, Indiana 46515

MSOP: 039-26362-00413

Reviewer: Christina Lowry

Date: August 4, 2008

Heat Input Capacity Potential Throughput

MMBtu/hr MMCF/yr

0.225 1.97

Pollutant

 PM* PM10* SO2 NOx VOC Emission Factor in lb/MMCF 1.9 7.6 0.6 100.0 5.5 

**see below

Potential Emission in tons/yr 0.002 0.007 0.001 0.099 0.005 *PM emission factor is filterable PM only. PM10 emission factor is filterable and condensable PM10 combined.**Emission Factors for NOx: Uncontrolled = 100, Low NOx Burner = 50, Low NOx Burners/Flue gas recirculation = 32MethodologyAll emission factors are based on normal firing.MMBtu = 1,000,000 BtuMMCF = 1,000,000 Cubic Feet of GasPotential Throughput (MMCF) = Heat Input Capacity (MMBtu/hr) x 8,760 hrs/yr x 1 MMCF/1,000 MMBtuEmission Factors are from AP 42, Chapter 1.4, Tables 1.4-1, 1.4-2, 1.4-3, SCC #1-02-006-02, 1-01-006-02, 1-03-006-02, and 1-03-006-03(SUPPLEMENT D 3/98)Emission (tons/yr) = Throughput (MMCF/yr) x Emission Factor (lb/MMCF)/2,000 lb/ton
Note: Check the applicable rules and test methods for PM and PM10 when using the above emission factors to confirm that the correct 

factor is used (i.e., condensable included/not included).

See page 3 for HAPs emissions calculations.
Appendix A: Emissions Calculations Page 3 

Natural Gas Combustion Only

 MM BTU/HR <100

Natural Gas Boiler

HAPs Emissions

Company Name: McDowell Enterprises, Inc.

Address City IN Zip: 2010 Superior Street, Elkhart, Indiana 46515

MSOP: 039-26362-00413

Reviewer: Christina Lowry

Date: August 4, 2008

HAPs - Organics

 Benzene Dichlorobenzene Formaldehyde Hexane TolueneEmission Factor in lb/MMcf 2.1E-03 1.2E-03 7.5E-02 1.8E+00 3.4E-03Potential Emission in tons/yr 2.07E-06 1.18E-06 7.39E-05 1.77E-03 3.35E-06

HAPs - Metals

 Lead Cadmium Chromium Manganese Nickel T

Emission Factor in lb/MMcf 5.0E-04 1.1E-03 1.4E-03 3.8E-04 2.1E-03 HPotential Emission in tons/yr 4.93E-07 1.08E-06 1.38E-06 3.74E-07 2.07E-06 0Methodology is the same as page 2.The five highest organic and metal HAPs emission factors are provided above. Additional HAPs emission factors are available in AP-42, Chapter 1.4.
Appendix A: Emission Calculations 

Buffing and Polishing

Company Name: McDowell Enterprises, Inc.

Address City IN Zip: 2010 Superior Street, Elkhart, Indiana 46515

MSOP: 039-26362-00413

Reviewer: Christina Lowry

Date: August 4, 2008

Unit ID Control Grain Loading per Actual Gas or Air Emission Rate Emission Rate Em

Efficiency Cubic foot of Outlet Air Flow Rate before Controls before Controls aft

(%) (grains/cub. ft.) (acfm.) (lb/hr) (tons/yr) 

Buffing and polishing 99.99% 7.40E-08 5.4 3.43E-05 1.50E-04 3

MethodologyEmission Rate in lbs/hr (after controls) = (grains/cub. ft.) (sq. ft.) ((cub. ft./min.)/sq. ft.) (60 min/hr) (lb/7000 grains)Emission Rate in tons/yr = (lbs/hr) (8760 hr/yr) (ton/2000 lb)Emission Rate in lbs/hr (before controls) = Emission Rate (after controls): (lbs/hr)/(1-control efficiency)Emission Rate in tons/yr = (lbs/hr) (8760 hr/yr) (ton/2000 lb)