*** E.O. 12866 Review – Draft – Do Not Cite, Quote, or Release During Review***

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Formatted: Left PART 63-–[AMENDED] 

1. The authority citation for part 63 continues to read 

as follows: 

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

Subpart U-–[AMENDED] 

9.2. Section 63.480 is amended by revising paragraph (j) to 

read as follows: 

§63.480 Applicability and designation of affected sources. 

* * * * * 

(j) Applicability of this subpart. Paragraphs (j)(1) 

through (4) of this section shall be followed during periods of 

non-operation of the affected source or any part thereof.

(1) The emission limitations set forth in this subpart 

and the emission limitations referred to in this subpart shall 

apply at all times except during periods of non-operation of the 

affected source (or specific portion thereof) resulting in 

cessation of the emissions to which this subpart applies. 

However, if a period of non-operation of one portion of an 

affected source does not affect the ability of a particular 

emission point to comply with the emission limitations to which 

it is subject, then that emission point shall still be required 

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to comply with the applicable emission limitations of this 

subpart during period of non‐operation. the period of non-operation. For 

example, if there is an overpressure in the reactor area, a 

storage vessel that is part of the affected source would still 

be required to be controlled in accordance with the emission 

limitations in §63.484.

(2) The emission limitations set forth in subpart H of 

this part, as referred to in §63.502, shall apply at all times 

except during periods of non-operation of the affected source 

(or specific portion thereof) in which the lines are drained and 

depressurized resulting in cessation of the emissions to which 

§63.502 applies. 

(3) The owner or operator shall not shut down items of 

equipment that are required or utilized for compliance with this 

subpart during times when emissions (or, where applicable, 

wastewater streams or residuals) are being routed to such items 

of equipment if the shutdown would contravene requirements of 

this subpart applicable to such items of equipment. 

(4) In response to an action to enforce the standards set 

forth in this subpart, youan owner or operator may assert a civilan 

affirmative defense to a claim for civil penalties for 

exceedances of such standards that are caused by a malfunction, 

as defined in 40 CFR 63.2. Appropriate penalties may be 

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assessed, however, if the respondentowner or operator fails to meet 

itsthe burden of proving all the requirements in the affirmative 

defense. The affirmative defense shall not be available for 

claims for injunctive relief. 

(i) To establish the affirmative defense in any action to 

enforce such a limit, the owners or operators of facilitiesa facility

must timely meet the notification requirements of paragraph 

(j)(4)(ii) of this section, and must prove by a preponderance of 

evidence that: 

(A) The excess emissions were caused by a sudden, short,

infrequent, and unavoidable failure of air pollution control and 

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

usual manner; and could not have been prevented through careful 

planning, proper design, or better operation and maintenance 

practices; and did not stem from any activity or event that 

could have been foreseen and avoided, or planned for; and were 

not part of a recurring pattern indicative of inadequate design, 

operation, or maintenance; and 

(B) Repairs were made as expeditiously as possible when 

the applicable emission limitations were being exceeded. Offshift and overtime labor were used, to the extent practicable to 

make these repairs; and 

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(C) The frequency, amount, and duration of the excess 

emissions (including any bypass) were minimized to the maximum 

extent practicable during periods of such emissions; and 

(D) If the excess emissions resulted from a bypass of 

control equipment or a process, then the bypass was unavoidable 

to prevent loss of life, severe personal injury, or severe property 

damage; and 

(E) All possible steps were taken to minimize the impact 

of the excess emissions on ambient air quality, the environment, 

and human health; and 

(F) All emissions monitoring and control systems were kept 

in operation if at all possible, consistent with safety and good 

air pollution control practices; and 

(G) YourAll of the actions in response to the excess 

emissions were documented by properly signed, contemporaneous 

operating logs; and 

(H) At all times, the facility was operated in a manner 

consistent with good practices for minimizing emissions; and 

(I) The owner or operator has prepared a written root 

cause analysis, the purpose of which is to determine, correct, 

and eliminate the primary causes of the malfunction and the 

excess emissions resulting from the malfunction event at issue. 

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The analysis shall also specify, using the best monitoring 

methods and engineering judgment, the amount of excess emissions 

that were the result of the malfunction. 

(ii) Notification. The owner or operator of the facility 

experiencing an exceedance of its emission limit(s) during a 

malfunction shall notify the Administrator by telephone or 

facsimile (FAX) transmission as soon as possible, but no later 

than 2 business days after the initial occurrence of the 

malfunction, if it wishes to avail itself of an affirmative 

defense to civil penalties for that malfunction. The owner or 

operator seeking to assert an affirmative defense shall also 

submit a written report to the Administrator within 3045 days of 

the initial occurrence of the exceedance of the standard in this 

subpart to demonstrate, with all necessary supporting 

documentation, that it has met the requirements set forth in 

paragraph (j)(4)(i) of this section. The owner or operator may 

seek an extension of this deadline for up to 30 additional days 

by submitting a written request to the Administrator before the 

expiration of the 45 day period. Until a request for an 

extension has been approved by the Administrator, the owner or 

operator is subject to the requirement to submit such report 

within 45 days of the initial occurrence of the exceedance. 

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10.3. Section 63.481 is amended by revising paragraph (c) to 

read as follows: 

§63.481 Compliance dates and relationship of this subpart to 

existing applicable rules. 

* * * * * 

(c) With the exceptions provided in paragraphs (c)(1) 

through (43) of this section, existing affected sources shall be 

in compliance with this subpart no later than June 19, 2001, as 

provided in §63.6(c), unless an extension has been granted as 

specified in paragraph (e) of this section. 

(1) Existing affected sources producing epichlorohydrin 

elastomer, halobutylbutyl rubber, neoprene rubber, and nitrile 

butadiene rubber shall be in compliance with the applicable 

emission limitation in §63.494(a)(4) no later than 1 year from date of

publication of the final rule amendments in the Federal Register.[INSERT DATE 1 YEAR FROM 

DATE OF PUBLICATION].

(2) Existing affected sources producing butyl rubber shall be

in compliance with §63.494(a)(4)(i) no later than 3 years from date of publication of the final rule

amendments in the Federal Register.

(3)  Existing affected sources producing butyl rubber, halobutyl rubber, and ethylene 

propylene rubber shall be in compliance with §63.485(q)(1) no 

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later than 3 years from date of publication of the final rule amendments in the Federal

Register.[INSERT DATE 3 YEARS FROM DATE OF PUBLICATION].

(43) Compliance with §63.502 is covered by paragraph (d) of 

this section. 

* * * * * 

11. Section 63.482 is amended by removing the definition 

of “halobutyl rubber,” adding in alphabetical order a definition 

for “affirmative defense,” and revising the definition of “definitions 

of “back-end,” “butyl rubber,” “elastomer product,” “initial‐

startup start-up,” and “product” in paragraph (b) to read as 

follows: 

§63.482 Definitions. 

* * * * * 

 (b) * * * 

Affirmative defense means, in the context of an enforcement 

proceeding, a response or a defense put forward by a defendant, 

regarding which the defendant has the burden of proof, and the 

merits of which are independently and objectively evaluated in a 

judicial or administrative proceeding. 

* * * * * 

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Back-end refers to the unit operations in an EPPU following 

the stripping operations. Back-end process operations include, 

but are not limited to, filtering, coagulation, blending, 

concentration, drying, separating, and other finishing 

operations, as well as latex and crumb storage. Back-end does 

not include storage and loading of finished product or emission 

points that are regulated under §§63.484, 63.501 or 63.502 of 

this subpart.

* * * * *

 Butyl rubber means a copolymer of isobutylene and other 

monomers. Typical other monomers include isoprene and 

methylstyrene. A typical composition of butyl rubber is 

approximately 85 to 99 percent isobutylene and one to fifteen 

percent other monomers. Most butyl rubber is produced by 

precipitation polymerization, although other methods may be 

used. Halobutyl rubber is a type of butyl rubber elastomer 

produced using halogenated copolymers.

* * * * *

Elastomer product means one of the following types of 

products, as they are defined in this section:

(1) Butyl Rubber;

(2) Epichlorohydrin Elastomer;
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(3) Ethylene Propylene Rubber;

(4) HypalonTM ;

(5) Neoprene;

(6) Nitrile Butadiene Rubber;

(7) Nitrile Butadiene Latex;

(8) Polybutadiene Rubber/Styrene Butadiene Rubber by Solution;

(9) Polysulfide Rubber;

(10) Styrene Butadiene Rubber by Emulsion; and

(11) Styrene Butadiene Latex.

* * * * *

 Initial start-up means the first time a new or 

reconstructed affected source begins production of an elastomer 

product, or, for equipment added or changed as described in 

§63.480(i), the first time the equipment is put into operation 

to produce an elastomer product. Initial start-up does not 

include operation solely for testing equipment. Initial startup does not include subsequent start-ups of an affected source 

or portion thereof following shutdowns or following changes in 

product for flexible operation units or following recharging of 

equipment in batch operation. 

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* * * * * 

12.Product means a polymer produced using the same monomers 

and varying in additives (e.g., initiators, terminators, etc.); 

catalysts; or in the relative proportions of monomers, that is 

manufactured by a process unit. With respect to polymers, more 

than one recipe may be used to produce the same product, and 

there can be more than one grade of a product. As an example, 

styrene butadiene latex and butyl rubber each represent a 

different product. Product also means a chemical that is not a 

polymer, is manufactured by a process unit. By-products, 

isolated intermediates, impurities, wastes, and trace 

contaminants are not considered products.

* * * * *

5. Section 63.483 is amended by revising paragraph (a) to 

read as follows: 

§63.483 Emission standards.

(a) At all times, each owner or operator must operate and 

maintain any affected source subject to the requirements of this 

subpart, including associated air pollution control equipment 

and monitoring equipment, in a manner consistent with safety and 

good air pollution control practices for minimizing emissions. 

The general duty to minimize emissions does not require the 

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owner or operator to make any further efforts to reduce 

emissions if levels required by this standard have been 

achieved. Determination of whether such 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 operation 

and maintenance procedures, review of operation and maintenance 

records, and inspection of the source.

 Except as allowed under paragraphs (b) through (d) of 

this section, the owner or operator of an existing or new 

affected source shall comply with the provisions in:

(1) Section 63.484 for storage vessels; 

(2) Section 63.485 for continuous front-end process vents; 

(3) Sections 63.486 through 63.492 for batch front-end 

process vents; 

(4) Sections 63.493 through 63.500 for back-end process 

operations; 

(5) Section 63.501 for wastewater; 

(6) Section 63.502 for equipment leaks; 

(7) Section 63.504 for additional test methods and 

procedures; 

(8) Section 63.505 for monitoring levels and excursions; 

and 

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(9) Section 63.506 for general reporting and recordkeeping 

requirements. 

* * * * * 

13.6. Section 63.484 is amended by revising paragraph (b)(4) 

to read as follows: 

§63.484 Storage vessel provisions. 

* * * * * 

 (b) * * * 

(4) Storage vessels located downstream of the stripping 

operations at affected sources subject to the back-end residual 

organic HAP limitation located in §63.494(a)(1) through (3), 

that are complying through the use of stripping technology, as 

specified in §63.495; 

* * * * * 

14.7. Section 63.485 is amended by revising paragraphs (q) 

introductory text and (q)(1) and adding paragraph (w) to read as 

follows: 

 §63.485 Continuous front-end process vent provisions. 

* * * * * 

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(q) Group 1 halogenated continuous front-end process vents 

must comply with the provisions of §63.113(a)(1)(ii) and 

§63.113(c), with the exceptions noted in paragraphs (q)(1) and 

(2) of this section. 

(1) All Group 1 and Group 2 halogenated continuous front‐end process vents at existing

affected sources producing butyl rubber, halobutyl rubber, or ethylene propylene rubber using a

solution process, must comply with §63.113(a)(1)(ii) and §63.113(c).

*  *  *  *  *

15.(1) Reserved.

* * * * *

(w) need to add paragraph with requirements for 

notification of compliance status for front-end vents

8. Section 63.489 is amended by revising paragraph 

(b)(4)(ii)(C) to read as follows: 

§63.489 Batch front-end process vents—monitoring equipment. 

* * * * * 

 (b) * * * 

 (4) * * * 

 (ii) * * * 

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 (C) The owner or operator may prepare and implement a gas 

stream flow determination plan that documents an appropriate 

method which will be used to determine the gas stream flow. The 

plan shall require determination of gas stream flow by a method 

which will at least provide a value for either a representative 

or the highest gas stream flow anticipated in the scrubber 

during representative operating conditions. The plan shall 

include a description of the methodology to be followed and an 

explanation of how the selected methodology will reliably 

determine the gas stream flow, and a description of the records 

that will be maintained to document the determination of gas 

stream flow. The owner or operator shall maintain the plan as 

specified in §63.506(a). 

* * * * * 

16.9. Section 63.491 is amended by revising paragraph 

(e)(2)(ii) to read as follows: 

§63.491 Batch front-end process vents—recordkeeping 

requirements. 

* * * * * 

 (e) * * * 

 (2) * * * 

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 (ii) Monitoring data recorded during periods of monitoring 

system breakdowns, repairs, calibration checks, and zero (lowlevel) and high-level adjustments shall not be included in 

computing the batch cycle daily averages. In addition, 

monitoring data recorded during periods of non-operation of the 

EPPU (or specific portion thereof) resulting in cessation of 

organic HAP emissions shall not be included in computing the 

batch cycle daily averages. 

* * * * * 

17.10. Section 63.493 is amended by revising the introductory

textrevised to read as follows: 

§63.493 Back-end process provisions. 

 Owners and operators of new and existing affected sources 

shall comply with the requirements in §§63.494 through 63.500. 

Owners and operators of affected sources whose only elastomer 

products are latex products, liquid rubber products, or products 

produced in a gas-phased reaction process are not subject to the 

provisions of §§63.494 through 63.500. If latex or liquid 

rubber products are produced in an affected source that also 

produces another elastomer product, the provisions of §§63.494 

through 63.500 do not apply to the back-end operations dedicated 

to the production of one or more latex products or to the backFormatted: Font: Courier New, 12 pt

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end operations during the production of a latex product. Table 

8 to this subpart contains a summary of compliance alternative 

requirements for the emission limits in §63.494(a)(1)-(3) and 

associated requirements.

18.11. Section 63.494 is amended by: 

a. Revising the section heading to §63.494; 

b. Revising paragraph (a) introductory text; 

c. Revising paragraphsparagraph (a)(4) and the introductory 

text of paragraph (a)(5); 

d. Adding paragraph (a)(6); 

e. Revising paragraph (b); 

f. Revising paragraph (c); and 

g. Revising paragraph (d) to read as follows: 

§63.494 Back-end process provisions—residual organic HAP and 

emission limitations. 

 (a) The monthly weighted average residual organic HAP 

content of all grades of styrene butadiene rubber produced by 

the emulsion process, polybutadiene rubber and styrene butadiene 

rubber produced by the solution process, and ethylene-propylene 

rubber produced by the solution process that is processed, shall 

be measured after the stripping operation [or the reactor(s), if 

the plant has no stripper(s)] as specified in §63.495(d), and 

shall not exceed the limits provided in paragraphs (a)(1) 

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through (3) of this section, as applicable. Owners or operators 

of these affected sources shall comply with the requirements of 

paragraphs (a)(1) through (3) of this section using either 

stripping technology or control or recovery devices. The 

organic HAP emissions from all back-end process operations at 

affected sources producing butyl rubber, epichlorohydrin 

elastomer, halobutyl rubber, neoprene, and nitrile butadiene rubber 

shall not exceed the limits determined in accordance with 

paragraph (a)(4) of this section, as applicable. 

* * * * * 

 (4) The organic HAP emissions from back-end processes at 

affected sources producing butyl rubber, epichlorohydrin 

elastomer, halobutyl rubber, neoprene, and nitrile butadiene rubber 

shall not exceed the limits determined in accordance with 

paragraphs (a)(4)(i) through (viv) of this section for any 

consecutive 12-month period. The specific limitation for each 

elastomer type shall be determined based on the calculation or 

the emissions level provided in paragraphs (a)(4)(i) through 

(viv) of this section divided by the base year production

level.elastomer product that leaves the stripping operation [or the 

reactor(s), if the plant has no stripper(s)]. The limitation 

shall be calculated and submitted in accordance with 

§63.499(f)(1). 

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(i) For butyl rubber, the organic HAP emission limitation, in

units of Mg organic HAP emissions per Mg of butyl rubber produced, shall be calculated 

by dividing 28 Mg/yr byusing the mass of butyl rubber produced in 2009, in Mg.following 

equation:

BREL ൌ 

Ceଶ଴଴ଽ ൅ Beଶ଴଴ଽ ൅ UCeଶ଴଴ଽ

Pଶ଴଴ଽ

1.32 כ

Where:

Be2009 = Bypass emissions in 2009, Mg/yr

BREL = Butyl rubber emission limit, Mg organic HAP 

emissions/Mg butyl rubber produced

Ce2009 = Controlled emissions in 2009, Mg/yr

P2009 = Total elastomer product leaving the stripper in 2009, 

Mg/yr

UCe2009 = Uncontrolled emissions in 2009, Mg/yr

1.32 = variability factor, unitless

(ii) For epichlorohydrin elastomer, the organic HAP 

emission limitation, in units of Mg organic HAP emissions per Mg 

of epichlorohydrin elastomer produced, shall be calculated by 

dividing 3651 Mg/yr by the mass of epichlorohydrin elastomer 

produced in 2009, in Mg. 

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(iii)  For halobutyl rubber, the organic HAP emission limitation, in units of Mg organic HAP

emissions per Mg of halobutyl rubber produced, shall be calculated by dividing 53 Mg/yr by the mass of

halobutyl rubber produced in 2006, in Mg.

(iv(iii) For neoprene, the organic HAP emission limitation, 

in units of Mg organic HAP emissions per Mg of neoprene 

produced, shall be calculated by dividing 2330 Mg/yr by the mass 

of neoprene produced in 20092007, in Mg. 

(viv) For nitrile butadiene rubber, the organic HAP 

emission limitation, in units of Mg organic HAP emissions per Mg 

of nitrile butadiene rubber produced, shall be calculated by 

dividing 1.72.4 Mg/yr by the mass of nitrile butadiene rubber 

produced in 2009, in Mg. 

 (5) For EPPU that produce both an elastomer product with a 

residual organic HAP limitation listed in paragraphs (a)(1) 

through (3) of this section, and a product listed in paragraphs 

(a)(5) (i) through (iv) of this section, only the residual HAP 

content of the elastomer product with a residual organic HAP 

limitation shall be used in determining the monthly average 

residual organic HAP content. 

* * * * * 

 (6) There are no back-end process operation residual 

organic HAP or emission limitations for HypalonTM and polysulfide 

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rubber production. There are also no back-end process operation 

residual organic HAP limitations for latex products, liquid 

rubber products, products produced in a gas-phased reaction 

process, styrene butadiene rubber produced by any process other 

than a solution or emulsion process, polybutadiene rubber 

produced by any process other than a solution process, or 

ethylene-propylene rubber produced by any process other than a 

solution process. 

 (b) If an owner or operator complies with the residual 

organic HAP limitations in paragraph (a)(1) through (3) of this 

section using stripping technology, compliance shall be 

demonstrated in accordance with §63.495. The owner or operator 

shall also comply with the recordkeeping provisions in §63.498, 

and the reporting provisions in §63.499. 

 (c) If an owner or operator complies with the residual 

organic HAP limitations in paragraph (a)(1) through (3) of this 

section using control or recovery devices, compliance shall be 

demonstrated using the procedures in §63.496. The owner or 

operator shall also comply with the monitoring provisions in 

§63.497, the recordkeeping provisions in §63.498, and the 

reporting provisions in §63.499. 

 (d) If the owner or operator complies with the residual 

organic HAP limitations in paragraph (a)(1) through (3) of this 
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section using a flare, the owner or operator of an affected 

source shall comply with the requirements in §63.504(c). 

19.12. Section 63.495 is amended by: 

a. Revising the section heading to §63.495; 

b. Revising paragraph (a); 

c. Revising paragraph (b)(5); and 

d. Adding paragraph (g) to read as follows: 

§63.495 Back-end process provisions—procedures to determine 

compliance with residual organic HAP limitations using stripping 

technology and organic HAP emissions limitations. 

 (a) If an owner or operator complies with the residual 

organic HAP limitations in §63.494(a)(1) through (3) using 

stripping technology, compliance shall be demonstrated using the 

periodic sampling procedures in paragraph (b) of this section, 

or using the stripper parameter monitoring procedures in 

paragraph (c) of this section. The owner or operator shall 

determine the monthly weighted average residual organic HAP 

content for each month in which any portion of the back-end of 

an elastomer production process is in operation. A single 

monthly weighted average shall be determined for all back-end 

process operations at the affected source. 

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 (b) * * * 

 (5) The monthly weighted average shall be determined using 

the equation in paragraph (f) of this section. All 

representative samples taken and analyzed during the month shall 

be used in the determination of the monthly weighted average. 

* * * * * 

(g) Compliance with the organic HAP emission limitations 

determined in accordance with §63.494(a)(4) shall be 

demonstrated in accordance with paragraphs (g)(1) through (5) of 

this section. 

(1) Calculate your organic HAP emission limitation in 

accordance with §63.494(a)(4)(i) through (viv), as applicable, 

record it, and submit it in accordance with §63.499(f)(1). 

(2) Each month, calculate and record the organic HAP 

emissions from all back end process operations using engineering 

assessment. Engineering assessment includes, but is not limited 

to, the following: 

(i) Previous test results, provided the test was 

representative of current operating practices. 

(ii) Bench-scale or pilot-scale test data obtained under 

conditions representative of current process operating 

conditions. 

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 (iii) Design analysis based on accepted chemical 

engineering principles, measurable process parameters, or 

physical or chemical laws or properties. Examples of analytical 

methods include, but are not limited to: 

(A) Use of material balances; 

(B) Estimation of flow rate based on physical equipment 

design, such as pump or blower capacities; 

(C) Estimation of organic HAP concentrations based on 

saturation conditions; and 

(D) Estimation of organic HAP concentrations based on grab 

samples of the liquid or vapor. 

(3) Each month, record the mass of elastomer product 

produced. 

(4) Each month, calculate and record the sums of the 

organic HAP emissions and the mass of elastomer produced for the 

month and the previous 11 monthscalendar 12-month period. 

(5) Each month, divide the total mass of organic HAP 

emitted for the previous calendar 12-month period by the total 

mass of elastomer produced during thethis 12-month period. This 

value must be recorded in accordance with §63.498(e) and 

reported in accordance with §63.499(f)(2). 

20.13. Section 63.496 is amended by: 

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a. Revising the section heading to §63.496; 

b. Revising paragraph (a); 

c. Revising paragraph (c)(2); and 

d. Revising paragraph (d) to read as follows: 

§63.496 Back-end process provisions—procedures to determine 

compliance with residual organic HAP limitations using control 

or recovery devices. 

 (a) If an owner or operator complies with the residual 

organic HAP limitations in §63.494(a)(1) through (3) using 

control or recovery devices, compliance shall be demonstrated 

using the procedures in paragraphs (b) and (c) of this section. 

Previous test results conducted in accordance with paragraphs 

(b)(1) through (6) of this section may be used to determine 

compliance in accordance with paragraph (c) of this section. 

* * * * * 

 (c) * * * 

 (2) A facility is in compliance if the average of the 

organic HAP contents calculated for all three test runs is below 

the residual organic HAP limitations in §63.494(a)(1) through 

(3). 

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(d) An owner or operator complying with the residual 

organic HAP limitations in §63.494(a)(1) through (3) using a 

control or recovery device, shall redetermine the compliance 

status through the requirements described in paragraph (b) of 

this section whenever process changes are made. The owner or 

operator shall report the results of the redetermination in 

accordance with §63.499(d). For the purposes of this section, a 

process change is any action that would reasonably be expected 

to impair the performance of the control or recovery device. 

For the purposes of this section, the production of an elastomer 

with a residual organic HAP content greater than the residual 

organic HAP content of the elastomer used in the compliance 

demonstration constitutes a process change, unless the overall 

effect of the change is to reduce organic HAP emissions from the 

source as a whole. Other examples of process changes may 

include changes in production capacity or production rate, or 

removal or addition of equipment. For the purposes of this 

paragraph, process changes do not include: Process upsets; 

unintentional, temporary process changes; or changes that reduce 

the residual organic HAP content of the elastomer. 

21.14. Section 63.497 is amended by: 

a. Revising the section heading to §63.497; 

b. Revising paragraph (a) introductory text; and 

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c. Revising paragraph (d) introductory text to read as 

follows: 

§63.497 Back-end process provisions—monitoring provisions for 

control and recovery devices used to comply with residual 

organic HAP limitations. 

(a) An owner or operator complying with the residual 

organic HAP limitations in §63.494(a)(1) through (3) using 

control or recovery devices, or a combination of stripping and 

control or recovery devices, shall install the monitoring 

equipment specified in paragraphs (a)(1) through (6) of this 

section, as appropriate. 

* * * * * 

(d) The owner or operator of an affected source with a 

controlled back-end process vent using a vent system that 

contains bypass lines that could divert a vent stream away from 

the control or recovery device used to comply with §63.494(a)(1) 

through (3) shall comply with paragraph (d)(1) or (2) of this 

section. Equipment such as low leg drains, high point bleeds, 

analyzer vents, open-ended valves or lines, and pressure relief 

valves needed for safety purposes are not subject to this 

paragraph. 

* * * * * 

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22.15. Section 63.498 is amended by: 

a. Revising paragraph (a) introductory text; 

b. Revising paragraph (a)(3); 

c. Adding paragraph (a)(4); 

d. Revising paragraph (b) introductory text; 

e. Revising paragraph (b)(3); 

f. Revising paragraph (c) introductory text; 

g. Revising paragraph (d) introductory text; 

h. Revising paragraph (d)(5)(ii)(B); 

i. Revising paragraph (d)(5)(ii)(E); and 

j. Adding paragraph (e) to read as follows: 

§63.498 Back-end process provisions—recordkeeping. 

 (a) Each owner or operator shall maintain the records 

specified in paragraphs (a)(1) through (34), and paragraphs (b) 

through (d) of this section, as appropriate. 

* * * * * 

 (3) If the back-end process operation is subject to a 

residual organic HAP limitation in §63.494(a)(1) through (3), 

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whether compliance will be achieved by stripping technology, or 

by control or recovery devices. 

(4) If the back-end process operation is subject to an 

emission limitation in §63.494(a)(4), the organic HAP emission 

limitation calculated in accordance with §63.494(a)(4)(i) 

through (viv), as applicable. 

 (b) Each owner or operator of a back-end process operation 

using stripping technology to comply with a residual organic HAP 

limitation in §63.494(a)(1) through (3), and demonstrating 

compliance using the periodic sampling procedures in §63.495(b), 

shall maintain the records specified in paragraph (b)(1), and in 

paragraph (b)(2) or paragraph (b)(3) of this section, as 

appropriate. 

* * * * * 

 (3) If the organic HAP contents for all samples analyzed 

during a month are below the appropriate level in §63.494(a), 

the owner or operator may record that all samples were in 

accordance with the residual organic HAP limitations in 

§63.494(a)(1) through (3), rather than calculating and recording 

a monthly weighted average. 

 (c) Each owner or operator of a back-end process operation 

using stripping technology to comply with a residual organic HAP 

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limitation in §63.494(a)(1) through (3), and demonstrating 

compliance using the stripper parameter monitoring procedures in 

§63.495(c), shall maintain the records specified in paragraphs 

(c)(1) through (3) of this section. 

* * * * * 

 (d) Each owner or operator of a back-end process operation 

using control or recovery devices to comply with a residual 

organic HAP limitation in §63.494(a)(1) through (3) shall 

maintain the records specified in paragraphs (d)(1) through (5) 

of this section. The recordkeeping requirements contained in 

paragraphs (d)(1) through (4) pertain to the results of the 

testing required by §63.496(b), for each of the three required 

test runs. 

* * * * * 

 (5) * * * 

 (ii) * * * 

 (B) Monitoring data recorded during periods of monitoring 

system breakdowns, repairs, calibration checks, and zero (lowlevel) and high-level adjustments shall not be included in 

computing the hourly or daily averages. In addition, monitoring 

data recorded during periods of non-operation of the EPPU (or 

specific portion thereof) resulting in cessation of organic HAP 
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emissions shall not be included in computing the hourly or daily 

averages. Records shall be kept of the times and durations of 

all such periods and any other periods of process or control 

device operation when monitors are not operating. 

* * * * * 

 (E) For flares, records of the times and duration of all 

periods during which the pilot flame is absent shall be kept 

rather than daily averages. The records specified in this 

paragraph are not required during periods when emissions are not 

routed to the flare. 

* * * * * 

(e) If the back-end process operation is subject to an 

organic HAP emission limitation in §63.494(a)(4), the records 

specified in paragraphs (e)(1) through (4) of this section. 

(1) The applicable organic HAP emission limitation determined 

in accordance with §63.494(a)(4)(i) through (viv). 

(2) The organic HAP emissions from all back-end process 

operations for each month, along with documentation of all 

calculations and other information used in the engineering 

assessment to estimate these emissions. 

(3) The mass of elastomer product produced each month. 

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(4) The total mass of organic HAP emitted for each 12-month 

period divided by the total mass of elastomer produced during 

the 12-month period, determined in accordance with 

§63.495(g)(5). 

23.16. Section 63.499 is amended by: 

a. Revising paragraph (a)(3); 

b. Revising paragraph (b) introductory text; 

c. Revising paragraph (c) introductory text; 

d. Revising paragraph (d) introductory text; and 

e. Adding paragraph (f) to read as follows: 

§63.499 Back-end process provisions—reporting. 

 (a) * * * 

 (3) If the back-end process operation is subject to a 

residual organic HAP limitation in §63.494(a)(1) through (3), 

whether compliance will be achieved by stripping technology, or 

by control or recovery devices. 

(b) Each owner or operator of a back-end process operation 

using stripping to comply with a residual organic HAP limitation 

in §63.494(a)(1) through (3), and demonstrating compliance by 

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stripper parameter monitoring, shall submit reports as specified 

in paragraphs (b)(1) and (2) of this section. 

* * * * * 

(c) Each owner or operator of an affected source with a 

back-end process operation control or recovery device that shall 

comply with a residual organic HAP limitation in §63.494(a)(1) 

through (3) shall submit the information specified in paragraphs 

(c)(1) through (3) of this section as part of the Notification 

of Compliance Status specified in §63.506(e)(5). 

* * * * * 

(d) Whenever a process change, as defined in §63.496(d), 

is made that causes the redetermination of the compliance status 

for the back-end process operations subject to a residual 

organic HAP limitation in §63.494(a)(1) through (3), the owner 

or operator shall submit a report within 180 days after the 

process change, as specified in §63.506(e)(7)(iii). The report 

shall include: 

* * * * * 

 (f) If the back-end process operation is subject to an 

organic HAP emission limitation in §63.494(a)(4), the owner and 

operator must submit the information specified in paragraphs 

(f)(1) and (2) of this section. 
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(1) The applicable organic HAP emission limitation 

determined in accordance with §63.494(a)(4)(i) through (viv) 

shall be submitted no later than 180 days from the date of 

publication of the final rule amendments in the Federal 

Register. 

(2) InBeginning with the first periodic report required to 

be submitted by §63.506(e)(6),) that is at least 13 months after 

the compliance date, the total mass of organic HAP emitted for 

each of the rolling 12-month periods in the reporting period 

divided by the total mass of elastomer produced during the 

corresponding 12-month period, determined in accordance with 

§63.495(g)(5). 

24.17. Section 63.501 is amended by revising paragraph 

(c)(2) 

to read as follows: 

§63.501 Wastewater provisions. 

* * * * * 

 (c) * * * 

 (2) Back-end streams at affected sources that are subject 

to a residual organic HAP limitation in §63.494(a)(1) through 

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(3) and that are complying with these limitations through the 

use of stripping technology. 

25.18. Section 63.502 is amended by revising 

paragraphparagraphs (a) and (b)(4) 

to read as follows: 

§63.502 Equipment leak and heat exchange system provisions. 

* * * * * 

(a) Equipment leak provisions. The owner or operator of each 

affected source, shall comply with the requirements of subpart H 

of this part, with the exceptions noted in paragraphs (b) 

through (m) of this section. Surge control vessels required to 

be controlled by subpart H may, alternatively, comply with the 

Group 1 storage vessel provisions specified in §63.484. (b) 

* * * 

 (4) Surge control vessels and bottoms receivers located 

downstream of the stripping operations at affected sources 

subject to the back-end residual organic HAP limitation located 

in §63.494(a)(1) through (3), that are complying through the use 

of stripping technology, as specified in §63.495; 

* * * * * 

26.§63.503--[AMENDED] 

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19. Section 63.503 is amended by removing and reserving 

paragraph (f)(1). 

27.20. Section 63.504 is amended by revising paragraph 

(a)(1) introductory text to read as follows: 

§63.504 Additional requirements for performance testing. 

(a) * * * 

(1) Performance tests shall be conducted at maximum 

representative operating conditions achievable during one of the 

time periods described in paragraph (a)(1)(i) of this section, 

without causing any of the situations described in paragraph 

(a)(1)(ii) of this section to occur. Upon request, the owner or 

operator shall make available to the Administrator such records 

as may be necessary to determine the conditions of performance 

tests. 

* * * * * 

28.21. Section 63.505 is amended by: 

a. Revising paragraph (e)(4); 

b. Revising paragraph (g)(1);

b.c. Revising paragraph (g)(1)(v)(A); 

c.d. Revising paragraph (g)(1)(v)(B); 

d.e. Removing paragraphs (g)(1)(v)(C) through (g)(1)(v)(E); 

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e.f. Revising paragraph (g)(2)(ii)(B);) introductory text;

and 

f.g. Adding paragraph (j) to read as follows: 

§63.505 Parameter monitoring levels and excursions. 

* * * * * 

 (e) * * * 

 (4) An owner or operator complying with the residual 

organic HAP limitations in paragraphs (a)(1) through (3) of 

§63.494 using stripping, and demonstrating compliance by 

stripper parameter monitoring, shall redetermine the residual 

organic HAP content for all affected grades whenever process 

changes are made. For the purposes of this section, a process 

change is any action that would reasonably be expected to impair 

the performance of the stripping operation. For the purposes of 

this section, examples of process changes may include changes in 

production capacity or production rate, or removal or addition 

of equipment. For purposes of this paragraph, process changes 

do not include: Process upsets; unintentional, temporary 

process changes; or changes that reduce the residual organic HAP 

content of the elastomer. 

* * * * * 

 (g) * * * 

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(1) (1) With respect to storage vessels (where the 

applicable monitoring plan specifies continuous monitoring), 

continuous front-end process vents, aggregate batch vent 

streams, back-end process operations complying with 

§63.494(a)(1) through (3) through the use of control or recovery 

devices, and process wastewater streams, an excursion means any 

of the three cases listed in paragraphs (g)(1)(i) through 

(g)(1)(iii) of this section. * * * 

 (v) * * * 

 (A) Monitoring system breakdowns, repairs, calibration 

checks, and zero (low-level) and high-level adjustments; or 

 (B) Periods of non-operation of the affected source (or 

portion thereof), resulting in cessation of the emissions to 

which the monitoring applies. 

 (2) * * * 

 (ii) * * * 

 (B) Subtract the time during the periods of monitoring 

system breakdowns, repairs, calibration checks, and zero (lowlevel) and high-level adjustments from the total amount of time 

determined in paragraph (g)(2)(ii)(A) of this section, to obtain 

the operating time used to determine if monitoring data are 

insufficient. 

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* * * * * 

(j) Excursion definition for back-end operations subject 

to §63.494(a)(4). An excursion means when the total mass of 

organic HAP emitted for any consecutive 12-month period divided 

by the total mass of elastomer produced during the 12-month 

period, determined in accordance with §63.495(g), is greater 

than the applicable emission limitation, determined in 

accordance with §63.494(a)(4)(i) through (viv) and submitted in 

accordance with §63.499(f)(1). 

29.22. Section 63.506 is amended by: 

a. Revising paragraph (b)(1); 

b. Revising paragraph (d)(7); 

c. Revising paragraph (e)(3);) introductory text;

d. Removing and reserving paragraph (e)(3)(viii); 

e. Removing paragraphs (e)(3)(viii)(A) and (e)(3)(viii)(B);

f.e. Revising paragraph (e)(3)(ix)(B); 

g.f. Revising paragraph (e)(6)(iii)(E); 

h.g. Revising paragraph (h)(1)(i); 

i.h. Revising paragraph (h)(1)(ii)(C); 

j.i. Revising paragraph (h)(1)(iii); 

k.j. Revising paragraph (h)(2)(iii); and

k. Removing and reserving paragraph (h)(2)(iv)(A); and 

l. Adding paragraph (i) to read as follows: 

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§63.506 General recordkeeping and reporting provisions. 

* * * * * 

(b) * * * 

(1) Malfunction records. Each owner or operator of an 

affected source subject to this subpart shall maintain records 

of the occurrence and duration of each malfunction of operation 

(i.e., process equipment), air pollution control equipment, or 

monitoring equipment. Each owner or operator shall maintain 

records of actions taken during periods of malfunction to 

minimize emissions in accordance with §63.483(a)(1), including 

corrective actions to restore malfunctioning process and air 

pollution control and monitoring equipment to its normal or 

usual manner of operation. 

* * * * * 

 (d) * * * 

(7) Monitoring data recorded during periods identified in 

paragraphs (d)(7)(i) and (ii) of this section shall not be 

included in any average computed under this subpart. Records 

shall be kept of the times and durations of all such periods and 

any other periods during process or control device or recovery 

device operation when monitors are not operating. 

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(i) Monitoring system breakdowns, repairs, calibration 

checks, and zero (low-level) and high-level adjustments; or 

(ii) Periods of non-operation of the affected source (or 

portion thereof), resulting in cessation of the emissions to 

which the monitoring applies. 

* * * * * 

(e) * * * 

(3) Precompliance Report. Owners or operators of affected 

sources requesting an extension for compliance; requesting 

approval to use alternative monitoring parameters, alternative 

continuous monitoring and recordkeeping, or alternative 

controls; requesting approval to use engineering assessment to 

estimate emissions from a batch emissions episode, as described 

in §63.488(b)(6)(i); wishing to establish parameter monitoring 

levels according to the procedures contained in §63.505(c) or 

(d); shall submit a Precompliance Report according to the 

schedule described in paragraph (e)(3)(i) of this section. The 

Precompliance Report shall contain the information specified in 

paragraphs (e)(3)(ii) through (vii) of this section, as 

appropriate. 

* * * * * 

(viii) [Reserved] 
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(ix) * * * 

(B) Supplements to the Precompliance Report may be 

submitted to request approval to use alternative monitoring 

parameters, as specified in paragraph (e)(3)(iii) of this 

section; to use alternative continuous monitoring and 

recordkeeping, as specified in paragraph (e)(3)(iv) of this 

section; to use alternative controls, as specified in paragraph 

(e)(3)(v) of this section; to use engineering assessment to 

estimate emissions from a batch emissions episode, as specified 

in paragraph (e)(3)(vi) of this section; or to establish 

parameter monitoring levels according to the procedures 

contained in §63.505(c) or (d), as specified in paragraph 

(e)(3)(vii) of this section. 

* * * * * 

(6) * * * 

(iii) * * * 

(E) The number, duration, and a brief description for each 

type of malfunction which occurred during the reporting period 

and which caused or may have caused any applicable emission 

limitation to be exceeded. The report must also include a 

description of actions taken by an owner or operator during a 

malfunction of an affected source to minimize emissions in 
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accordance with §63.483(a)(1), including actions taken to 

correct a malfunction. 

* * * * * 

(h) * * * 

(1) * * * 

(i) The monitoring system is capable of detecting 

unrealistic or impossible data during periods of normal 

operation (e.g., a temperature reading of −200 °C on a boiler), 

and will alert the operator by alarm or other means. The owner 

or operator shall record the occurrence. All instances of the 

alarm or other alert in an operating day constitute a single 

occurrence. 

(ii) * * * 

(C) The running average reflects a period of normal 

operation. 

(iii) The monitoring system is capable of detecting 

unchanging data during periods of normal operation, except in 

circumstances where the presence of unchanging data is the 

expected operating condition based on past experience (e.g., pH 

in some scrubbers), and will alert the operator by alarm or 

other means. The owner or operator shall record the occurrence. 
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All instances of the alarm or other alert in an operating day 

constitute a single occurrence. 

* * * * * 

(2) * * * 

(iii) The owner or operator shall retain the records 

specified in paragraphs (h)(1)(i) through (iii) of this section, 

for the duration specified in paragraph (h) of this section. 

For any calendar week, if compliance with paragraphs (h)(1)(i) 

through (iii) of this section does not result in retention of a 

record of at least one occurrence or measured parameter value, 

the owner or operator shall record and retain at least one 

parameter value during a period of normal operation. 

(iv) * * * 

(A) [Reserved]

* * * * * 

30.(i)(1) As of January 1, 2012, and within 60 days after 

the date of completing each performance test, as defined in 

§63.2 and as required in this subpart, you must submit 

performance test data, except opacity data, electronically to 

EPA’s Central Data Exchange by using the Electronic Reporting 

Tool (ERT) (see http://www.epa.gov/ttn/chief/ert/ert tool.html/) 

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or other compatible electronic spreadsheet. Only data collected 

using test methods compatible with ERT are subject to this 

requirement to be submitted electronically into EPA’s WebFIRE 

database. 

(2) All reports required by this subpart not subject to the 

requirements in paragraphs (i)(1) of this section must be sent 

to the Administrator at the appropriate address listed in 

§63.13. If acceptable to both the Administrator and the owner 

or operator of a source, these reports may be submitted on 

electronic media. The Administrator retains the right to 

require submittal of reports subject to paragraph (i)(1) of this 

section in paper format.

* * * * *

23. Table 1 to Subpart U of part 63 is amended by: 

a. Removing entry 63.6(e); 

b. Revising entries 63.6(e)(1)(i) and 63.6(e)(1)(ii); 

c. Revising entry 63.6(e)(2); 

d. Adding entry 63.6(e)(3); 

e. Removing entries 63.6(e)(3)(i) through 63.6(e)(3)(ix); 

f. Revising entry 63.6(f)(1); and 

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e. Revising entries 63.10(d)(5)(i7(e)(1) and 63.10(d)(5)(iii) to 

read as follows: 

TABLE 1 TO SUBPART U OF PART 63—APPLICABILITY OF GENERAL 

PROVISIONS TO SUBPART U AFFECTED SOURCES 

Reference Applies to subpart U Explanation 

* * * * * * * 

§63.6(e)(1)(i) No See §63.483(a)(1) 

for general duty 

requirement. Any 

cross reference to 

§63.6(e)(1)(i) in 

any other general 

provision 

incorporated by 

reference shall be 

treated as a cross 

reference to 

§63.483(a)(1). 

§63.6(e)(1)(ii) No 

* * * * * * * 

§63.6(e)(2) No [Reserved.]. 

§63.6(e)(3) No 

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§63.6(f)(1) No 

* * * * * * * 

§63.7(e)(1) No 

See §63.504(a)(1). 

Any crossreference to 

§63.7(e)(1) in any 

other general 

provision 

incorporated by 

reference shall be 

treated as a 

cross-reference to 

§63.504(a)(1). 

* * * * * * * 

63.10(d)(5)(i) No 

* * * * * * * 

24. Table 5 to Subpart U of part 63 is amended by removing 

the entries for HBR:

Table 5 to Subpart U of Part 63--Known Organic HAP Emitted From 

the Production of Elastomer Products

[Known organic HAP emitted from the production of elastomer 

products]

Organic 

HAP/chemical 

name (CAS 

No.)

Elastomer Product/Subcategory

B

R

EP

I

EP

R

HY

P

NE

O

NB

L

NB

R

PBR/SBR

S

PS

R

SB

L

SBR

E

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Acrylonitrile 

(107131) XX

1,3 Butadiene 

(106990) XXX XX

Carbon 

Disulfide XXX XX

Carbon 

Tetrachloride 

(56235) X

Chlorobenzene 

(108907) X

Chloroform 

(67663) X

Chloroprene 

(126998) X

Epichlorohydr

in (106898)X

Ethylbenzene 

(100414)X X

Ethylene 

Dichloride 

(107062) X

Ethylene 

Oxide (75218)X X

Formaldehyde 

(50000)X X

Hexane 

(110543)X X X

Methanol 

(67561)X X

Methyl 

Chloride 

(74873)X X

Propylene 

Oxide (75569)X

Styrene 

(100425) X XX

Toluene 

(108883)XX X X

Xylenes 

(1330207)X

Xylene (m-) 

(108383)X

Xylene (o-) 

(95476)X

Xylene (p-) X
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(106423)

CAS No. = Chemical Abstract Service Number.

BR = Butyl Rubber.

EPI = Epichlorohydrin Rubber.

EPR = Ethylene Propylene Rubber.

HYP = HypalonTM.

NEO = Neoprene.

NBL = Nitrile Butadiene Latex.

NBR = Nitrile Butadiene Rubber.

PBR/SBRS = Polybutadiene and Styrene Butadiene Rubber by 

Solution.

PSR = Polysulfide Rubber.

SBL = Styrene Butadiene Latex.

SBRE = Styrene Butadiene Rubber by Emulsion.

* * * * *

Subpart Y-–[AMENDED] 

31.25. Section 63.560 is amended by: 

a. Revising paragraphs (Adding paragraph (a)(1), (a)(2), 

and (a)(3);

4);b. Revising paragraph (d)(6); and

c. Amending Table 1 to §63.560 as follows:

i. Revising paragraph (eentry 63.6(f)(1);

a. ii. Removing entry 63.7(e);

b. iii. Adding entries 63.7(e)(1) and 63.7(e)(2)-(4);

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)(iv. Removing entries 63.8(c)(1)(i), 63.8(c)(1)(ii), 

and 63.(c)(1)(iii);

v. Adding entry 63.8(c)(1);

vi. Removing entry 63.10(b)(2)(i);

vii. Adding entry 63.10(b)(2)(i)-(ii);

viii. Removing entry 63.10(b)(2)(ii)-(iii);

ix. Adding entry 63.10(b)(2)(iii);

x. Removing entry 63.10(c)(10)-(13); and

 xi. Adding entries 63.10(c)(10)-(11) and 63.10(c)(12)-

(13) to read as follows: 

§63.560 Applicability and designation of affected source. 

 (a) * * * 

(1) The provisions of this subpart pertaining to the MACT 

standards in §63.562(b) and (d) of this subpart are applicable 

to existing and new sources with emissions of 10 or 25 tons, as 

that term is defined in §63.561, except as specified in 

paragraph (d) of this section, and are applicable to new sources 

with emissions less than 10 and 25 tons, as that term is defined 

in §63.561, except as specified in paragraphs (d) and (f) of 

this section.

(2) (

(4) Existing sources with emissions less than 10 and 25 

tons aremust meet the submerged fill standards of 46 CFR 

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153.282. This submerged fill requirement does not subject to 

the emissions standards in §63.562(b) and (d), except as 

specified in paragraph (f) of this section.

(3) The recordkeeping requirements of §63.567(j)(4) and 

the emission estimation requirements of §63.565(l) apply to 

existing sources with emissions less than 10 and 25 tons, except 

as specified in paragraph (f) of this sectionpetroleum 

refineries. 

* * * * * 

(d) * * * 

(6) The provisions of this subpart do not apply to marine 

tank vessel loading operations at existing offshore loading 

terminals, as that term is defined in §63.561, excepthowever

existing offshore loading terminals must meet (d)(6)(i) and 

(ii)the submerged fill standards of this section.46 CFR 153.282. 

(i) The submerged fill standards of 46 CFR 153.282, and

(ii) The provisions of §63.562(f)(1) or §63.562(f)(2), if 

the terminal loads more than 1 million barrels (M barrels) of 

gasoline.

* * * * *

(e) * * *

(1) * * *

(iv) New and existing sources with emissions less than 10 or 

25 tons, that load more than 1 M barrels of gasoline shall 
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comply with the provisions of §63.562(f) by [INSERT DATE 3 YEARS 

FROM DATE OF PUBLICATION IN THE FEDERAL REGISTER].

* * * * *

32. Table 1 to §63.560 is amended by:

c. Revising entry 63.6(f)(1);

* * * * *

d. Removing entry 63.7(e);

e. Adding entries 63.7(e)(1) and 63.7(e)(2)-(4);

f. Removing entry 63.10(b)(2)(ii)-(iii);

g. Adding entries 63.10(b)(2)(ii) and 63.10(b)(2)(iii);

h. Removing entry 63.10(c)(10)-(13); and

i. Adding entries 63.10(c)(10)-(11) and 63.10(c)(12)-

(13)

to read as follows:

Table 1 of §63.560—General Provisions Applicability to Subpart Y 

Reference 

Applies to 

affected 

sources in 

subpart Y 

Comment 

* * * * * * * 

63.6(f)(1) No 

* * * * * * * 

63.7(e)(1) No 

See 63.563(b)(1). Any cross 

reference to 63.7(e)(1) in any 

other general provision 

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at -0.99" + -0.49" + 0" + 1.01" + 1.51" + 

2.01" + 2.51" + 3.01" + 3.51" + 4.01" + 

4.51" + 5.01" + 5.51"

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incorporated by reference shall be 

treated as a cross-reference to 

63.563(b)(1). 

63.7(e)(2)-(4) Yes 

63.8(c)(1) No

* * * * * * *

* * * * * * *

63.10(b)(2)(i)-

(ii)

No See 63.567(m).

* * * * * * * 

63.10(b)(2)(iii) Yes 

* * * * * * * 

63.10(c)(10)–

(11) 

No 

See 63.567(m)(1) for reporting 

malfunctions. Any cross-reference 

to 63.10(c)(10) or 63.10(c)(11) in 

any other general provision 

incorporated by reference shall be 

treated as a cross-reference to 

63.567(m)(1). 

63.10(c)(12)–

(13) 

Yes 

* * * * * * * 

33.26. Section 63.561 is amended by adding in alphabetical 

order a definition for “affirmative defense” to read as follows: 

§63.561 Definitions. 

* * * * * 

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Affirmative defense means, in the context of an enforcement 

proceeding, a response or a defense put forward by a defendant, 

regarding which the defendant has the burden of proof, and the 

merits of which are independently and objectively evaluated in a 

judicial or administrative proceeding. 

* * * * * 

34.27. Section 63.562 is amended by: 

a. Revising paragraph (a);

b. Revising paragraph (b)(1);

c.a. Revising paragraph (e); ) introductory text; 

and

d.b. Adding paragraph (e)(7); and )

e. Adding paragraph (f) to read as follows: 

§63.562 Standards. 

(a) The emissions limitations in paragraphs (b), (c), (d) 

and (f) of this section apply during marine tank vessel loading 

operations.

(b) MACT standards, except for the VMT source‐‐(1)(i) Vapor collection system of the terminal.

The owner or operator of a new source with emissions less than 10 and 25 tons, an existing or new

source with emissions of 10 or 25 tons, and an existing source with emissions less than 10 and 25 tons

that loads more than 1 M barrels of gasoline shall equip each terminal with a vapor collection system

that is designed to collect HAP vapors displaced from marine tank vessels during marine tank vessel

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loading operations and to prevent HAP vapors collected at one loading berth from passing through

another loading berth to the atmosphere, except for those commodities exempted under §63.560(d).

    (ii) Ship‐to‐shore compatibility. The owner or operator of a new source with emissions less than 10

and 25 tons, an existing or new source with emissions of 10 or 25 tons, and an existing source with

emissions less than 10 and 25 tons that loads more than 1 million bbl/yr of gasoline shall limit marine

tank vessel loading operations to those vessels that are equipped with vapor collection equipment that

is compatible with the terminal's vapor collection system, except for those commodities exempted

under §63.560(d).

    (iii) Vapor tightness of marine vessels. The owner or operator of a new source with emissions less

than 10 and 25 tons, an existing or new source with emissions of 10 or 25 tons, and an existing source

with emissions less than 10 and 25 tons that loads more than 1 million bbl/yr of gasoline shall limit

marine tank vessel loading operations to those vessels that are vapor tight and to those vessels that are

connected to the vapor collection system, except for those commodities exempted under §63.560(d).

* * * * * 

 (e) Operation and maintenance requirements for air pollution 

control equipment and monitoring equipment for affected sources. 

At all times, owners or operators of affected sources shall 

operate and maintain a source, including associated air 

pollution control equipment, in a manner consistent with safety 

and good air pollution control practices for minimizing 

emissions. Determination of whether acceptable operation and 

maintenance procedures are being used will be based on 

information available to the Administrator which may include, 

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but is not limited to, monitoring results, review of operation 

and maintenance procedures, review of operation and maintenance 

records, and inspection of the source. 

* * * * * 

(7) In response to an action to enforce the standards set 

forth in this subpart, you may assert a civilan affirmative defense 

to a claim for civil penalties for exceedances of such standards 

that are caused by a malfunction, as defined in §63.2. 

Appropriate penalties may be assessed, however, if the 

respondent fails to meet its burden of proving all the 

requirements in the affirmative defense. The affirmative 

defense shall not be available for claims for injunctive relief. 

(i) To establish the affirmative defense in any action to 

enforce such a limit, the owners or operators of facilitiesa facility

must timely meet the notification requirements of paragraph 

(e)(7)(ii) of this section, and must prove by a preponderance of 

evidence that: 

(A) The excess emissions were caused by a sudden, short, 

infrequent, and unavoidable failure of air pollution control and 

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

usual manner; and could not have been prevented through careful 

planning, proper design or better operation and maintenance 

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practices; and did not stem from any activity or event that 

could have been foreseen and avoided, or planned for; and were 

not part of a recurring pattern indicative of inadequate design, 

operation, or maintenance; and 

(B) Repairs were made as expeditiously as possible when 

the applicable emission limitations were being exceeded. Offshift and overtime labor were used, to the extent practicable to 

make these repairs; and 

(C) The frequency, amount and duration of the excess 

emissions (including any bypass) were minimized to the maximum 

extent practicable during periods of such emissions; and 

(D) If the excess emissions resulted from a bypass of 

control equipment or a process, then the bypass was unavoidable 

to prevent loss of life, severe personal injury, or severe property 

damage; and 

(E) All possible steps were taken to minimize the impact 

of the excess emissions on ambient air quality, the environment, 

and human health; and 

(F) All emissions monitoring and control systems were kept 

in operation if at all possible, consistent with safety and good 

air pollution control practices; and 

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(G) YourAll of the actions in response to the excess 

emissions were documented by properly signed, contemporaneous 

operating logs; and 

(H) At all times, the facility was operated in a manner 

consistent with good practices for minimizing emissions; and 

(I) The owner or operator has prepared a written root 

cause analysis, the purpose of which is to determine, correct,

and eliminate the primary causes of the malfunction and the 

excess emissions resulting from the malfunction event at issue. 

The analysis shall also specify, using the best monitoring 

methods and engineering judgment, the amount of excess emissions 

that were the result of the malfunction. 

 (ii) Notification. The owner or operator of the facility 

experiencing an exceedance of its emission limit(s) during a 

malfunction shall notify the Administrator by telephone or 

facsimile (FAX) transmission as soon as possible, but no later 2 

business days after the initial occurrence of the malfunction, 

if it wishes to avail itself of an affirmative defense to civil 

penalties for that malfunction. The owner or operator seeking 

to assert an affirmative defense shall also submit a written 

report to the Administrator within 3045 days of the initial 

occurrence of the exceedance of the standard in this subpart to 

demonstrate, with all necessary supporting documentation, that 

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it has met the requirements set forth in paragraph (e)(7)(i) of 

this section. The owner or operator may seek an extension of 

this deadline for up to 30 additional days by submitting a 

written request to the Administrator before the expiration of 

the 45 day period. Until a request for an extension has been 

approved by the Administrator, the owner or operator is subject 

to the requirement to submit such report within 45 days of the 

initial occurrence of the exceedance.

(f) The owner or operator of an existing source, that is not located at a petroleum refinery, with

emissions less than 10 and 25 tons that loads more than 1 million bbl/yr of gasoline shall:

    (1) Limit emissions to not more than 10 mg of total organic compounds per liter of gasoline loaded; or

    (2) Reduce captured emissions by at least 97 percent by weight.  

35. 28. Section 63.563 is amended by revising paragraphs (a) introductory

text andparagraph (b)(1) to read as follows: 

§63.563 Compliance and performance testing. 

(a)  The following procedures shall be used to determine compliance with the emissions limits

under Sec. 63.562(b)(1), (c)(2), (d)(1), and (f):

*  *  *  *  *

* * * * *

(b) * * * 

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(1) Initial performance test. An initial performance test 

shall be conducted using the procedures listed in §63.7 of 

subpart A of this part according to the applicability in Table 1 

of §63.560, the procedures listed in this section, and the test 

methods listed in §63.565. The initial performance test shall 

be conducted within 180 days after the compliance date for the 

specific affected source. During this performance test, sources 

subject to MACT standards under §63.562(b)(2), (3), (4), and 

(5), and (d)(2) shall determine the reduction of HAP emissions, 

as VOC, for all combustion or recovery devices other than 

flares. Performance tests shall be conducted under such 

conditions as the Administrator specifies to the owner or 

operator based on representative performance of the affected 

source for the period being tested. Upon request, the owner or 

operator shall make available to the Administrator such records 

as may be necessary to determine the conditions of performance 

tests. Sources subject to RACT standards under §63.562(c)(3), 

(4), and (5), and (d)(2) shall determine the reduction of VOC 

emissions for all combustion or recovery devices other than 

flares. 

* * * * * 

SUBPART29. Section 63.567 is amended byadding paragraph (m) 

to read as follows:

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§63.567 Recordkeeping and reporting requirements. 

* * * * *

(m) The number, duration, and a brief description for each 

type of malfunction which occurred during the reporting period 

and which caused or may have caused any applicable emission 

limitation to be exceeded shall be stated in a semiannual 

report. The report must also include a description of actions 

taken by an owner or operator during a malfunction of an 

affected source to minimize emissions in accordance with 

§63.562(e), including actions taken to correct a malfunction. 

The report, to be certified by the owner or operator or other 

responsible official, shall be submitted semiannually and 

delivered or postmarked by the 30th day following the end of 

each calendar half.

* * * * *

Subpart KK—[--[AMENDED] 

 30. Section 63.820 is amended by adding paragraph (c) to 

read as follows:

§63.820 Applicability.

* * * * *

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36. Section 63.820 is amended by adding paragraph (c) to read 

as follows:

§63.820 Applicability.

* * * * *

(c) In response to an action to enforce the standards set 

forth in this subpart, youan owner or operator may assert a civilan 

affirmative defense to a claim for civil penalties for 

exceedances of such standards that are caused by a malfunction, 

as defined in §63.2. Appropriate penalties may be assessed, 

however, if the respondentowner or operator fails to meet itsthe

burden of proving all the requirements in the affirmative 

defense. The affirmative defense shall not be available for 

claims for injunctive relief. 

(1) To establish the affirmative defense in any action to 

enforce such a limit, the owners or operators of facilitiesa facility

must timely meet the notification requirements of paragraph 

(c)(2) of this section, and must prove by a preponderance of 

evidence that: 

(i) The excess emissions were caused by a sudden, short,

infrequent, and unavoidable failure of air pollution control and 

monitoring equipment, or a process to operate in a normal anor

usual manner; and could not have been prevented through careful 

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planning, proper design or better operation and maintenance 

practices; and did not stem from any activity or event that 

could have been foreseen and avoided, or planned for; and were 

not part of a recurring pattern indicative of inadequate design, 

operation, or maintenance; and 

(ii) Repairs were made as expeditiously as possible when 

the applicable emission limitations were being exceeded. Offshift and overtime labor were used, to the extent practicable to 

make these repairs; and 

(iii) The frequency, amount, and duration of the excess 

emissions (including any bypass) were minimized to the maximum 

extent practicable during periods of such emissions; and 

(iv) If the excess emissions resulted from a bypass of 

control equipment or a process, then the bypass was unavoidable 

to prevent loss of life, severe personal injury, or severe property 

damage; and 

(v) All possible steps were taken to minimize the impact 

of the excess emissions on ambient air quality, the environment, 

and human health; and 

(vi) All emissions monitoring and control systems were 

kept in operation if at all possible, consistent with safety and 

good air pollution control practices; and 

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(vii) YourAll of the actions in response to the excess 

emissions were documented by properly signed, contemporaneous 

operating logs; and 

(viii) At all times, the facility was operated in a manner 

consistent with good practices for minimizing emissions; and 

(ix) The owner or operator has prepared a written root 

cause analysis, the purpose of which is to determine, correct 

and eliminate the primary causes of the malfunction and the 

excess emissions resulting from the malfunction event at issue. 

The analysis shall also specify, using the best monitoring 

methods and engineering judgment, the amount of excess emissions 

that were the result of the malfunction. 

(2) Notification. The owner or operator of the facility 

experiencing an exceedance of its emission limit(s) during a 

malfunction shall notify the Administrator by telephone or 

facsimile (FAX) transmission as soon as possible, but no later 2 

business days after the initial occurrence of the malfunction, 

if it wishes to avail itself of an affirmative defense to civil 

penalties for that malfunction. The owner or operator seeking 

to assert an affirmative defense shall also submit a written 

report to the Administrator within 3045 days of the initial 

occurrence of the exceedance of the standard in this subpart to 

demonstrate, with all necessary supporting documentation, that 

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it has met the requirements set forth in paragraph (c)(1) of 

this section. The owner or operator may seek an extension of 

this deadline for up to 30 additional days by submitting a 

written request to the Administrator before the expiration of 

the 45 day period. Until a request for an extension has been 

approved by the Administrator, the owner or operator is subject 

to the requirement to submit such report within 45 days of the 

initial occurrence of the exceedance. 

37.31. Section 63.822 is amended by adding in alphabetical 

order a definition for “affirmative defense” to paragraph (a) to 

read as follows: 

§63.822 Definitions. 

(a) * * * 

Affirmative defense means, in the context of an enforcement 

proceeding, a response or a defense put forward by a defendant, 

regarding which the defendant has the burden of proof, and the 

merits of which are independently and objectively evaluated in a 

judicial or administrative proceeding. 

* * * * * 

38.32. Section 63.823 is revised to read as follows: 

§63.823 Standards: General. 

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 (a) Table 1 to this subpart provides cross references to 

the 40 CFR part 63, subpart A, general provisions, indicating 

the applicability of the general provisions requirements to this 

subpart KK. 

 (b) Each owner or operator of an affected source subject 

to this subpart must at all times operate and maintain that 

affected source, including associated air pollution control 

equipment and monitoring equipment, in a manner consistent with 

safety and good air pollution control practices for minimizing 

emissions. Determination of whether such 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 operation 

and maintenance procedures, review of operation and maintenance 

records, and inspection of the source. 

39.33. Section 63.827 is amended by adding introductory text 

to read as follows: 

§63.827 Performance test methods. 

 Performance tests shall be conducted under such conditions 

as the Administrator specifies to the owner or operator based on 

representative performance of the affected source for the period 

being tested. Upon request, the owner or operator shall make 

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available to the Administrator such records as may be necessary 

to determine the conditions of performance tests. 

* * * * * 

40. 34. Section 63.829 is amended by adding paragraphs 

(g) and (h) to read as follows: 

§63.829 Recordkeeping requirements. 

* * * * * 

 (g) Each owner or operator of an affected source subject 

to this subpart shall maintain records of the occurrence and 

duration of each malfunction of operation (i.e., process 

equipment), air pollution control equipment, or monitoring 

equipment. 

 (h) Each owner or operator of an affected source subject 

to this subpart shall maintain records of actions taken during 

periods of malfunction to minimize emissions in accordance with 

§63.823(b), including corrective actions to restore 

malfunctioning process and air pollution control and monitoring 

equipment to its normal or usual manner of operation. 

41. 35. Section 63.830 is amended by: 

a. Removing and reserving paragraph (b)(5); and

b. Adding paragraph (b)(6)(v); and

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c. Adding paragraph (c) to read as follows: 

§63.830 Reporting requirements. 

* * * * * 

 (b) * * * 

 (5) [Reserved] 

 (6) * * * 

 (v) The number, duration, and a brief description for each 

type of malfunction which occurred during the reporting period 

and which caused or may have caused any applicable emission 

limitation to be exceeded. The report must also include a 

description of actions taken by an owner or operator during a 

malfunction of an affected source to minimize emissions in 

accordance with §63.823(b), including actions taken to correct a 

malfunction. 

* * * * *

(c)(1) As of January 1, 2012, and within 60 days after the 

date of completing each performance test, as defined in §63.2 

and as required in this subpart, you must submit performance 

test data, except opacity data, electronically to EPA’s Central 

Data Exchange by using the Electronic Reporting Tool (ERT) (see 

http://www.epa.gov/ttn/chief/ert/ert tool.html/) or other 

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compatible electronic spreadsheet. Only data collected using 

test methods compatible with ERT are subject to this requirement 

to be submitted electronically into EPA’s WebFIRE database. 

(2) All reports required by this subpart not subject to 

the requirements in paragraph (c)(1) of this section must be 

sent to the Administrator at the appropriate address listed in 

§63.13. If acceptable to both the Administrator and the owner 

or operator of a source, these reports may be submitted on 

electronic media. The Administrator retains the right to 

require submittal of reports subject to paragraph (c)(1) of this 

section in paper format.

42. 36. Table 1 to Subpart KK of part 63 is amended by: 

(a). Removing entry 63.6(e); 

(b). Adding entries 63.6(e)(1)(i), 63.6(e)(1)(ii); 

63.6(e)(1)(iii), 63.6(e)(2), and 63.6(e)(3); 

(c). Removing entry 63.6(f); 

(d). Adding entries 63.6(f)(1) and 63.6(f)(2)-(f)(3); 

(e). Removing entry 63.7; 

(f). Adding entries 63.7(a)-(d), 63.7(e)(1), and 63.7(e)(2)-

(e)(4); 

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(g). Removing entry 63.8(d)-(f); 

(h). Adding entries 63.8(d)(1)-(2), 63.8(d)(3), and 63.8(e)-

(f); 

(i). Removing entries 63.10(b)(1)-(b)(3), 63.10(c)(10)-

(c)(15), and 63.10(d)(4)-(d)(5); 

(b)j. Adding entries 63.10(b)(1), 63.10(b)(2)(i), 

63.10(b)(2)(ii), 63.10(b)(2)(iii), 63.10(b)(2)(iv)-(b)(2)(v), 

63.10(b)(2)(vi)-(b)(2)(xiv), 63.10(b)(3), 63.10(c)(10), 

63.10(c)(11), 63.10(c)(12)-(c)(14), 63.10(c)(15), 63.10(d)(4), 

and 63.10(d)(5) to read as follows: 

TABLE 1 TO SUBPART KK OF PART 63 – --APPLICABILITY OF GENERAL 

PROVISIONS TO SUBPART KK 

General provisons 

reference 

Applicable to 

subpart KK 

Comment 

* * * * * * * 

§63.6(e)(1)(i) No. See 63.823(b) for 

general duty 

requirement. Any 

cross-reference to 

63.6(e)(1)(i) in any 

other general 

provision incorporated 

by reference shall be 

treated as a crossreference to 

63.823(b). 

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§63.6(e)(1)(ii) No. 

§63.6(e)(1)(iii) Yes. 

§63.6(e)(2) No. Section reserved. 

§63.6(e)(3) No. 

§63.6(f)(1) No. 

§63.6(f)(2)-(f)(3) Yes. 

* * * * * * * 

§63.7(a)-(d) Yes. 

§63.7(e)(1) No. See 63.827 

introductory text. 

Any cross-reference to 

63.7(e)(1) in any 

other general 

provision incorporated 

by reference shall be 

treated as a crossreference to 63.827 

introductory text. 

§63.7(e)(2)-(e)(4) Yes. 

* * * * 

* * * 

§63.8(d)(1)-(2) Yes. 

§63.8(d)(3) Yes, except 

for last 

sentence. 

§63.8(e)-(f) Yes. 

* * * * 

* * * 

§63.10(b)(1) Yes. 

§63.10(b)(2)(i) No. 

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§63.10(b)(2)(ii) No. See 63.829(g) for 

recordkeeping of 

occurrence and 

duration of 

malfunctions. See 

63.829(h) for 

recordkeeping of 

actions taken during 

malfunction. Any 

cross-reference to 

63.10(b)(2)(ii) in any 

other general 

provision incorporated 

by reference shall be 

treated as a crossreference to 

63.829(g). 

§63.10(b)(2)(iii) Yes. 

§63.10(b)(2)(iv)-

(b)(2)(v) 

No. 

§63.10(b)(2)(vi)-

(b)(2)(xiv) 

Yes. 

§63.10(b)(3) Yes. 

* * * * 

* * * 

§63.10(c)(10) No. See 63.830(b)(6)(v) 

for reporting 

malfunctions. Any 

cross-reference to 

63.10(c)(10) in any 

other general 

provision incorporated 

by reference shall be 

treated as a crossreference to 

63.830(b)(6)(v). 

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§63.10(c)(11) No. See 63.830(b)(6)(v) 

for reporting 

malfunctions. Any 

cross-reference to 

63.10(c)(11) in any 

other general 

provision incorporated 

by reference shall be 

treated as a crossreference to 

63.830(b)(6)(v). 

§63.10(c)(12)-

(c)(14) 

Yes. 

§63.10(c)(15) No. 

* * * * 

* * * 

§63.10(d)(4) Yes. 

§63.10(d)(5) No. 

* * * * 

* * * 

Subpart GGG-–[AMENDED] 

51.37. Section 63.1250 is amended by revising paragraph (g) 

to read as follows: 

§63.1250 Applicability. 

* * * * * 

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(g) Applicability of this subpart. (1) Each provision set 

forth in this subpart shall apply at all times, except that the 

provisions set forth in §63.1255 of this subpart shall not apply 

during periods of nonoperation of the PMPU (or specific portion 

thereof) in which the lines are drained and depressurized 

resulting in the cessation of the emissions to which §63.1255 of 

this subpart applies. 

(2) The owner or operator shall not shut down items of 

equipment that are required or utilized for compliance with the 

emissions limitations of this subpart during times when 

emissions (or, where applicable, wastewater streams or 

residuals) are being routed to such items of equipment, if the 

shutdown would contravene emissions limitations of this subpart 

applicable to such items of equipment. This paragraph does not 

apply if the owner or operator must shut down the equipment to 

avoid damage to a PMPU or portion thereof. 

(3) At all times, each owner or operator must operate and 

maintain any affected source subject to the requirements of this 

subpart, including associated air pollution control equipment 

and monitoring equipment, in a manner consistent with safety and 

good air pollution control practices for minimizing emissions. 

The general duty to minimize emissions does not require the 

owner or operator to make any further efforts to reduce 

emissions if levels required by this standard have been 

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achieved. Determination of whether such 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 operation 

and maintenance procedures, review of operation and maintenance 

records, and inspection of the source. 

(4) In response to an action to enforce the standards set 

forth in this subpart, youan owner or operator may assert a 

civilan affirmative defense to a claim for civil penalties for 

exceedances of such standards that are caused by a malfunction, 

as defined in §63.2. Appropriate penalties may be assessed, 

however, if the respondentowner or operator fails to meet itsthe

burden of proving all the requirements in the affirmative 

defense. The affirmative defense shall not be available for 

claims for injunctive relief. 

(i) To establish the affirmative defense in any action to 

enforce such a limit, the owners or operators of facilitiesa 

facility must timely meet the notification requirements of 

paragraph (g)(4)(ii) of this section, and must prove by a 

preponderance of evidence that: 

(A) The excess emissions were caused by a sudden, short,

infrequent, and unavoidable failure of air pollution control and 

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

usual manner; and could not have been prevented through careful 

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planning, proper design, or better operation and maintenance 

practices; and did not stem from any activity or event that 

could have been foreseen and avoided, or planned for; and were 

not part of a recurring pattern indicative of inadequate design, 

operation, or maintenance; and 

(B) Repairs were made as expeditiously as possible when 

the applicable emission limitations were being exceeded. Offshift and overtime labor were used, to the extent practicable to 

make these repairs; and 

(C) The frequency, amount, and duration of the excess 

emissions (including any bypass) were minimized to the maximum 

extent practicable during periods of such emissions; and 

(D) If the excess emissions resulted from a bypass of 

control equipment or a process, then the bypass was unavoidable 

to prevent loss of life, severe personal injury, or severe 

property damage; and 

(E) All possible steps were taken to minimize the impact 

of the excess emissions on ambient air quality, the environment, 

and human health; and 

(F) All emissions monitoring and control systems were kept 

in operation if at all possible, consistent with safety and good 

air pollution control practices; and 
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(G) YourAll of the actions in response to the excess 

emissions were documented by properly signed, contemporaneous 

operating logs; and 

(H) At all times, the facility was operated in a manner 

consistent with good practices for minimizing emissions; and 

(I) The owner or operator has prepared a written root 

cause analysis, the purpose of which is to determine, correct, 

and eliminate the primary causes of the malfunction and the 

excess emissions resulting from the malfunction event at issue. 

The analysis shall also specify, using the best monitoring 

methods and engineering judgment, the amount of excess emissions 

that were the result of the malfunction. 

(ii) Notification. The owner or operator of the facility 

experiencing an exceedance of its emission limit(s) during a 

malfunction shall notify the Administrator by telephone or 

facsimile (FAX) transmission as soon as possible, but no later 2 

business days after the initial occurrence of the malfunction, 

if it wishes to avail itself of an affirmative defense to civil 

penalties for that malfunction. The owner or operator seeking 

to assert an affirmative defense shall also submit a written 

report to the Administrator within 3045 days of the initial 

occurrence of the exceedance of the standard in this subpart to 

demonstrate, with all necessary supporting documentation, that 

it has met the requirements set forth in paragraph (g)(4)(i) of 
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this section. The owner or operator may seek an extension of 

this deadline for up to 30 additional days by submitting a 

written request to the Administrator before the expiration of 

the 45 day period. Until a request for an extension has been 

approved by the Administrator, the owner or operator is subject 

to the requirement to submit such report within 45 days of the 

initial occurrence of the exceedance. 

* * * * * 

52. 38. Section 63.1251 is amended by adding in 

alphabetical order a definition for “affirmative defense” to 

read as follow: 

§63.1251 Definitions. 

* * * * * 

Affirmative defense means, in the context of an enforcement 

proceeding, a response or a defense put forward by a defendant, 

regarding which the defendant has the burden of proof, and the 

merits of which are independently and objectively evaluated in a 

judicial or administrative proceeding. 

* * * * * 

53. 39. Section 63.1255 is amended by revising paragraph 

(g)(4)(v)(A) to read as follow: 

§63.1255 Standards: Equipment leaks. 

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* * * * * 

 (g) * * * 

 (4) * * * 

 (v) * * * 

 (A) The owner or operator may develop a written procedure 

that identifies the conditions that justify a delay of repair. 

The written procedures shall be included in a document that is 

maintained at the plant site. Reasons for delay of repair may 

be documented by citing the relevant sections of the written 

procedure. 

* * * * * 

54. 40. Section 63.1256 is amended by revising paragraph 

(a)(4)(i),) introductory text, and removing paragraphs (a)(4)(iii) 

and (iv) to read as follows: 

§63.1256 Standards: Wastewater. 

* * * * * 

 (a) * * * 

 (4) * * * 

 (i) The owner or operator shall prepare a description of 

maintenance procedures for management of wastewater generated 

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from the emptying and purging of equipment in the process during 

temporary shutdowns for inspections, maintenance, and repair 

(i.e., a maintenance turnaround) and during periods which are 

not shutdowns (i.e., routine maintenance). The descriptions 

shall be included in a document that is maintained at the plant 

site and shall: 

* * * * * 

55. 41. Section 63.1257 is amended by revising 

paragraphsparagraph (a) introductory text and the first sentence of 

paragraph (e)(2)(iii)(A)(6)(ii) to read as follows: 

§63.1257 Test methods and compliance procedures. 

(a) General. Except as specified in paragraph (a)(5) of 

this section, the procedures specified in paragraphs (c), (d), 

(e), and (f) of this section are required to demonstrate initial 

compliance with §§63.1253, 63.1254, 63.1256, and 63.1252(e), 

respectively. The provisions in paragraphs (a)(2) through (3) 

apply to performance tests that are specified in paragraphs (c), 

(d), and (e) of this section. The provisions in paragraph 

(a)(5) of this section are used to demonstrate initial 

compliance with the alternative standards specified in 

§§63.1253(d) and 63.1254(c). The provisions in paragraph (a)(6) 

of this section are used to comply with the outlet concentration 

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requirements specified in §§63.1253(c), 63.1254(a)(2)(i), and 

(a)(3)(ii)(B), 63.1254(b)(i), and 63.1256(h)(2). Performance 

tests shall be conducted under such conditions as the 

Administrator specifies to the owner or operator based on 

representative performance of the affected source for the period 

being tested. Upon request, the owner or operator shall make 

available to the Administrator such records as may be necessary 

to determine the conditions of performance tests. 

* * * * * 

 (e) * * * 

 (2) * * *

 (iii) * * *

 (A) * * *

 (6) * * * 

 (ii) The owner or operator may consider the inlet to the 

equalization tank as the inlet to the biological treatment 

process if the wastewater is conveyed by hard-piping from either 

the last previous treatment process or the point of 

determination to the equalization tank; and the wastewater is 

conveyed from the equalization tank exclusively by hard-piping 

to the biological treatment process and no treatment processes 

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or other waste management units are used to store, handle, or 

convey the wastewater between the equalization tank and the 

biological treatment process; and the equalization tank is 

equipped with a fixed roof and a closed-vent system that routes 

emissions to a control device that meets the requirements of 

§63.1256(b)(1)(i) through (iv) and §63.1256(b)(2)(i). * * * 

* * * * *

56. 42. Section 63.1258 is amended by removing 

paragraph (b)(8)(iv). 

57.§63.1258--[AMENDED]

 43. Section 63.1259 is amended by revising paragraph 

(a)(3) to read as follows: 

§63.1259 Recordkeeping requirements. 

* * * * * 

 (a) * * * 

 (3) Malfunction Records.records. Each owner or operator of 

an affected source subject to this subpart shall maintain 

records of the occurrence and duration of each malfunction of 

operation (i.e., process equipment), air pollution control 

equipment, or monitoring equipment. Each owner or operator 

shall maintain records of actions taken during periods of 

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malfunction to minimize emissions in accordance with 

§63.1250(g)(3), including corrective actions to restore 

malfunctioning process and air pollution control and monitoring 

equipment to its normal or usual manner of operation. 

* * * * * 

58.44. Section 63.1260 is amended by revising:

 a. Revising paragraph (a);

 b. Revising paragraph (i); and

 c. Adding paragraph (n) to read as follows: 

§63.1260 Reporting requirements. 

* * * * * 

 (a) The owner or operator of an affected source shall comply 

with the reporting requirements of paragraphs (b) through (n) of 

this section. Applicable reporting requirements of §§63.9 and 

63.10 are also summarized in Table 1 of this subpart.

* * * * *

 (i) The owner or operator shall submit a report of the

number, duration, and a brief description for each type of 

malfunction which occurred during the reporting period and which 

caused or may have caused any applicable emission limitation to 

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be exceeded. The report must also include a description of 

actions taken by an owner or operator during a malfunction of an 

affected source to minimize emissions in accordance with 

§63.1250(g)(3), including actions taken to correct a 

malfunction. The report shall be submitted on the same schedule 

as the periodic reports required under paragraph (g) of this 

section.

* * * * * 

59.(n)(1) As of January 1, 2012, and within 60 days after 

the date of completing each performance test, as defined in 

§63.2 and as required in this subpart, you must submit 

performance test data, except opacity data, electronically to 

EPA’s Central Data Exchange by using the Electronic Reporting 

Tool (ERT) (see http://www.epa.gov/ttn/chief/ert/ert tool.html/) 

or other compatible electronic spreadsheet. Only data collected 

using test methods compatible with ERT are subject to this 

requirement to be submitted electronically into EPA’s WebFIRE 

database. 

(2) All reports required by this subpart not subject to the 

requirements in paragraphs (n)(1) of this section must be sent 

to the Administrator at the appropriate address listed in 

§63.13. If acceptable to both the Administrator and the owner 

or operator of a source, these reports may be submitted on 

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electronic media. The Administrator retains the right to 

require submittal of reports subject to paragraph (n)(1) of this 

section in paper format.

* * * * *

45. Table 1 to Subpart GGG is amended by: 

 a. Removing entry 63.6(e); 

 b. Adding entries 63.6(e)(1)(i), 63.6(e)(1)(ii), 

63.6(e)(1)(iii), 63.6(e)(2), and 63.6(e)(3); 

 c. Removing entry 63.6(f)-(g); 

d. Adding entries 63.6(f)(1), 63.6(f)(2)-(3), 63.6(g); 

e. Removing entry 63.7(e); 

f. Adding entries 63.7(e)(1) and 63.7(e)(2)-(4); 

g. RevisingRemoving entry 63.8(d); 

h. Adding entries 63.8(d)(1)-(2) and 63.8(d)(3). 

63.10(b)(2)(ii);

i. Removing entry 63.10(c)-(d)(2); 

 j. Adding entries 63.10(c)(1)-(9), 63.10(c)(10), 

63.10(c)(11), 63.10(c)(12)-(14), 63.10(c)(15), and 63.10(d)(1)-

(2); 

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k. Removing entry 63.10(d)(4-5); and 

 l. Adding entries 63.10(d)(4) and 63.10(d)(5) to read as 

follows: 

Table 1 to Subpart GGG of Part 63—General Provisions 

Applicability to Subpart GGG 

General 

provisions 

reference 

Summary of 

requirements 

Applies 

to 

subpart 

GGG Comments 

* * * * * * * 

§63.6(e)(1)(i) Requirements 

during periods 

of startup, 

shutdown, and 

malfunction 

No See 63.1250(g)(3) for 

general duty 

requirement. Any 

cross-reference to 

63.6(e)(1)(i) in any 

other general 

provision 

incorporated by 

reference shall be 

treated as a crossreference to 

63.1250(g)(3). 

§63.6(e)(1)(ii) Malfunction 

correction 

requirements 

No 

§63.6(e)(1)(iii) Enforceability 

of operation and 

maintenance 

requirements 

Yes 

§63.6(e)(2) Reserved No Section reserved 

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§63.6(e)(3) Startup, 

shutdown, and 

malfunction plan 

requirements 

No 

* * * * * * * 

63.6(f)(1) 

Applicability of 

nonopacity 

emission 

standards 

No 

63.6(f)(2)-(3) 

Methods of 

determining 

compliance and 

findings 

compliance 

Yes 

63.6(g) 

Use of an 

alternative 

nonopacity 

emission 

standard 

Yes 

* * * * * * * 

63.7(e)(1) 

Conduct of 

performance 

tests 

No 

See 63.1257(a) text. 

Any cross-reference 

to 63.7(e)(1) in any 

other general 

provision 

incorporated by 

reference shall be 

treated as a crossreference to 

63.1257(a). 

63.7 (e)(2)-(4) Performance 

tests 

Yes 

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requirements 

* * * * * * * 

63.8(d)(1)-(2) 

CMS quality 

control program 

requirements 

Yes 

63.8(d)(3) 

CMS quality 

control program 

recordkeeping 

requirements 

Yes, 

except 

for last 

sentence.

* * * * * * * 

63.10(c)(1)-(9) 

Additional 

recordkeeping 

requirements for 

sources with 

continuous 

monitoring 

systems 

Yes 

63.10(c)(10) 

Malfunction 

recordkeeping 

requirement 

No 

Subpart GGG specifies 

recordkeeping 

requirements. 

63.10(c)(11) Malfunction 

corrective 

action 

recordkeeping 

requirement 

No Subpart GGG specifies 

recordkeeping 

requirements. 

63.10(c)(12)- 

(14) 

Additional 

recordkeeping 

requirements for 

sources with 

continuous 

monitoring 

Yes 

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systems 

63.10(c)(15) Additional SSM 

recordkeeping 

requirements 

No 

* * * * * * * 

63.10(d)(1)-(2) General 

reporting 

requirements 

Yes 

* * * * * * * 

63.10(d)(4) Progress report 

requirements 

Yes 

63.10(d)(5) Startup, 

shutdown, and 

malfunction 

report 

requirements 

No Subpart GGG specifies 

reporting 

requirements. 

* * * * * * * 

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Balloon Text: English (U.S.), Widow/Orphan control, Adjust space between Latin and Asian text, Adjust

space between Asian text and numbers

Page 1: [3] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Comment Text: Font: (Default) Times New Roman, English (U.S.), Widow/Orphan control, Adjust space

between Latin and Asian text, Adjust space between Asian text and numbers

Page 1: [4] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Footer: Font: Times New Roman, English (U.S.), Widow/Orphan control, Adjust space between Latin and

Asian text, Adjust space between Asian text and numbers

Page 1: [5] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Footnote Text: Font: Calibri, Space After:  10 pt, Line spacing:  Multiple 1.15 li, Widow/Orphan control,

Adjust space between Latin and Asian text, Adjust space between Asian text and numbers

Page 1: [6] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Heading 9: Font: (Default) Arial, English (U.S.), Outline numbered + Level: 9 + Numbering Style: 1, 2, 3, ...

+ Start at: 1 + Alignment: Left + Aligned at:  0" + Tab after:  1.1" + Indent at:  1.1"

Page 1: [7] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Heading 8: Font: Times New Roman, 12 pt, English (U.S.), Outline numbered + Level: 8 + Numbering

Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at:  0" + Tab after:  1" + Indent at:  1"

Page 1: [8] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Heading 7: Font: Times New Roman, 12 pt, English (U.S.), Outline numbered + Level: 7 + Numbering

Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at:  0" + Tab after:  0.9" + Indent at:  0.9"

Page 1: [9] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Heading 6: Font: Times New Roman, English (U.S.), Outline numbered + Level: 6 + Numbering Style: 1, 2,

3, ... + Start at: 1 + Alignment: Left + Aligned at:  0" + Tab after:  0.8" + Indent at:  0.8"

Page 1: [10] Style Definition Lesley Stobert 4/7/2011 1:35:00 PM 

Heading 5,Char: Font: (Default) Times New Roman, English (U.S.), Outline numbered + Level: 5 +

Numbering Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at:  0" + Tab after:  0.7" + Indent at:  

0.7", Widow/Orphan control, Adjust space between  

Page 1: [11] Formatted Lesley Stobert 4/7/2011 1:35:00 PM
Indent: Left:  0", First line:  0.5", Don't adjust space between Latin and Asian text, Don't adjust space

between Asian text and numbers

Page 1: [12] Formatted Lesley Stobert 4/7/2011 1:35:00 PM 

Font: Courier New, 12 pt, Not Italic