*** E.O. 12866 Review – Draft – Do Not Cite, Quote, or Release During Review*** Page **1** of **88** Formatted: Font: Bold Formatted: Font: Bold Formatted: Left **PART 63-–[AMENDED]**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.**

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(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 Style Definition ... [1] Style Definition ... [2] Style Definition ... [3] Style Definition: Comment Reference Style Definition ... [4] Style Definition ... [5] Style Definition ... [6] Style Definition ... [7] Style Definition ... [8] Style Definition ... [9] Style Definition ... [10] Style Definition: Heading 4: Font: Times New Roman, English (U.S.), Outline numbered + Level: 4 + Numbering Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at: 0" + Tab after: 0.6" + Indent at: 0.6" Style Definition: Heading 3: Font: (Default) Times New Roman, 12 pt, English (U.S.), Outline numbered + Level: 3 + Numbering Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at: 0" + Tab after: 0.5" + Indent at: 0.5" Style Definition: Heading 2: Font: 14 pt, Bold, Italic, English (U.S.), Indent: Left: 0.5", Space Before: 12 pt, After: 3 pt, Line spacing: single, Outline numbered + Level: 2 + Numbering Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at: 1" + Tab after: 1.4" + Indent at: 1.4", Keep with next, Tab stops: 0.5", Left + 1.25", Left + Not at 1" Style Definition: Heading 1,Preamble Heading 1: Font: (Default) Times New Roman, English (U.S.), Indent: Left: 1", Outline numbered + Level: 1 + Numbering Style: 1, 2, 3, ... + Start at: 1 + Alignment: Left + Aligned at: 1.75" + Tab after: 2.25" + Indent at: 2.25", Tab stops: 1.5", Left + Not at 2.25" Style Definition: Normal: Font: Calibri, 11 pt, 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

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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, you an owner or operator may assert a civil an 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 Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold assessed, however, if the respondent owner or operator fails to meet
it s the 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 facilities a 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 whenthe applicable emission limitations were being exceeded. Offshift and overtime labor were used, to the extent practicable to make these repairs; and Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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) Your All 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. Formatted: Font: Courier New, 12 pt

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(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 30 45 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. Formatted: Font: Courier New, 12 pt

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**§63.481 Compliance dates and relationship of this subpart to existing applicable rules.** 

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(c) With the exceptions provided in paragraphs (c)(1) through ( 4 3 ) 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, halobutyl butyl 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, hal obutyl rubber, and ethylene propylene rubber shall be in compliance with §63.485(q)(1) no Formatted: Font: Courier New, 12 pt

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. **[INSERT DATE 3 YEARS FROM DATE OF PUBLICATION]**
. ( 4 3 ) Compliance with §63.502 is covered by paragraph (d) of this section.

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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.**

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(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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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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.

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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.

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Elastomer product means one of the following types of products, as they are defined in this section:
(1) Butyl Rubber;
(2) Epichlorohydrin Elastomer;Page **9** of **88**

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(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.

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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 notinclude 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. Formatted: Font: Courier New, 12 ptPage **10** of **88**

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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.

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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 Formatted: Font: Courier New, 12 pt

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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 Formatted: Normal Formatted: Font: 12 ptPage **12** of **88**

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13. 6. Section 63.484 is amended by revising paragraph (b)(4) to read as follows:
**§63.484 Storage vessel provisions.**

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(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;

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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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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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).

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15. (1) Reserved.

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(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.**

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(b) * * *
(4) * * *
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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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).

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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.** 

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(e) * * *
(2) * * * Formatted: Font: Courier New, 12 ptPage **15** of **88**

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17. 10. Section 63.493 is amended by revising the introductory

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

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18. 11. Section 63.494 is amended by:

a. Revising the section heading to § 63.494 ; b. Revising paragraph (a) introductory text;

c. Revising paragraph s paragraph (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) Formatted: Font: Courier New, 12 pt

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(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 ( v iv ) 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 ( v iv ) 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). Formatted: Font: Courier New, 12 pt

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units of Mg organic HAP emissions per Mg of butyl rubber produc ed, shall be calculated by dividing 28 Mg/yr by using the mass of butyl rubber produced in 2009, in Mg. following equation:

BREL ൌ Ce ଶ଴଴ଽ ൅ Be ଶ଴଴ଽ ൅ UCe ଶ଴଴ଽ P

ଶ଴଴ଽ 1.32 כ

Where:

Be 2009 = Bypass emissions in 2009, Mg/yr
BREL = Butyl rubber emission limit, Mg organic HAP emissions/Mg butyl rubber produced

Ce 2009 = Controlled emissions in 2009, Mg/yr

P 2009 = Total elastomer product leaving the stripper in 2009, Mg/yr

UCe 2009 = 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 36 51 Mg/yr by the mass of epichlorohydrin elastomer produced in 2009, in Mg. Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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emissions per Mg of halobutyl rubber produced, shall be calculated by divid ing 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 23 30 Mg/yr by the mass of neoprene produced in 2009 2007 , in Mg.
( v iv ) 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 1.7 2.4 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.

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(6) There are no back-end process operation residual organic HAP or emission limitations for Hypalon TM and polysulfide Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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 thisPage **21** of **88**

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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. Formatted: Font: Courier New, 12 pt
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(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 ( v iv ), 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. Formatted: Font: Courier New, 12 ptPage **23** of **88**

Formatted: Header, Indent: Left: 0" Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 months calendar 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 the this 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: Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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). Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 Formatted: Font: Courier New, 12 ptPage **26** of **88**

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**§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.

* * * * * Formatted: Font: Courier New, 12 pt, Bold

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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 ( 3 4 ), 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), Formatted: Font: Courier New, 12 pt

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(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 ( v iv ), 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 Formatted: Font: Courier New, 12 ptPage **29** of **88**

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* * * * *
(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 monitoringsystem 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 HAPPage **30** of **88**

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* * * * *
(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 ( v iv ).
(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. Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 Formatted: Font: Courier New, 12 ptPage **32** of **88**

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* * * * *
(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.Page **33** of **88**

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(2) In Beginning 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 Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (3) and that are complying with these limitations through the use of stripping technology.

25. 18. Section 63.502 is amended by revising paragraph paragraphs (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]** Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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); Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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) * * * Formatted: Font: Courier New, 12 ptPage **37** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 monitoringsystem 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. Formatted: Font: Courier New, 12 ptPage **38** of **88**

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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 ( v iv ) 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: Formatted: Font: Courier New, 12 pt, Underline Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold **§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. Formatted: Font: Courier New, 12 ptPage **40** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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]Page **41** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 inPage **42** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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.Page **43** of **88**

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* * * * *
(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/) Formatted: Font: Courier New, 12 ptPage **44** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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 Formatted: Font: Courier New, 12 ptPage **45** of **88**

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**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 c ross reference to §63.6(e)(1)(i) in any other general provision incorporated by r eference shall be t reated 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 Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt, Bold Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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* * * * * * *

§63.7(e)(1) No S ee §63.504(a)(1).Any crossreference to § 63.7(e)(1) in any other general provision incorporated by r eference shall be treated as a cross- r eference 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 Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Acrylonitrile (107131) X X 1,3 Butadiene (106990) X X X X X Carbon Disulfide X X X X X 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 X X Toluene (108883) X X X X Xylenes (1330207) X Xylene (m-) (108383) X Xylene (o-) (95476) X Xylene (p-) XPage **48** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (106423) CAS No. = Chemical Abstract Service Number. BR = Butyl Rubber. EPI = Epichlorohydrin Rubber. EPR = Ethylene Propylene Rubber. HYP = Hypalon TM

. 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]** 3 1
. 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 (e entry 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); Formatted: Indent: Left: 0.75", Space After: 10 pt, No bullets or numberingPage **49** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold )( 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 are must meet the submerged fill standards of 46 CFR Formatted: StrikethroughPage **50** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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 exi sting sources with emissions less than 10 and 25 tons, except as specified in paragraph (f) of this section petroleum 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, except however 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 shallPage **51** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold comply with the provisions of §63.562(f) by **[ INSERT DATE 3 YEARS** 
**FROM DATE OF**  **PUBLICATION IN THE FEDERAL REGISTER**  **]**
. * * * * * 3 2 . Table 1 to §63.560 is amended by:

c. R evising 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. R emoving entry 63.10(b)(2)(ii)

- (iii);
g. A dding entries 63.10(b)(2)(ii) and 63.10(b)(2)(iii); h. R emoving entry 63.10(c)(10)

- (13); and i. Adding entries 63.10 (c)(10)

- (11) and 63.10(c)(12)

- (13)
t o 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 Formatted: Indent: Left: 0.75", Space After: 10 pt, No bullets or numbering

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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

* * * * * * *

3 3

. 26. Section 63.561 is amended by adding in alphabetical order a definition for “affirmative defense” to read as follows:
**§63.561 Definitions.**
* * * * * Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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.

* * * * *

3 4

. 27. Section 63.562 is amended by:

a. R evising paragraph (a); b. R evising paragraph (b)(1);

c. a. Revising paragraph (e ); ) introductory text; and d. b. Adding paragraph (e)(7 ); and )

e. A dding 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 wit h 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 s ystem that is designed to collect HAP vapors displaced from marine tank vessels during marine tank vessel Formatted: Font: Courier New, 12 pt

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(ii) Ship

‐ to
‐ shore compatibility

. T he 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
emissi ons 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 syst em, 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, Formatted: Font: Courier New, 12 ptPage **55** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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 civil an 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 facilities a 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 Formatted: Font: Courier New, 12 pt

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(B) Repairs were made as expeditiously as possible whenthe 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 Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (G) Your All 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 30 45 days of the initial occurrence of the exceedance of the standard in this subpart to demonstrate, with all necessary supporting documentation, that Formatted: Font: Courier New, 12 pt

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(f) The owner or operator of an existing source, that is not located at a petroleum refinery, with
emiss ions less than 10 and 25 tons that loads more than 1 million bbl/yr of gasoline shall:

(1) L imit emissions to not more than 10 mg of total organic compounds per liter of gasoline loaded; or (2) R educe captured emissions by a t least 97 percent by weight.

3 5

. 28. Section 63.563 is amended by revising paragraph s (a) introductory
text and paragraph (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) * * * Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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.

* * * * *

SUBPART 29. Section 63.567 is amended byadding paragraph (m) to read as follows: Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt, Not Italic

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold **§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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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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, you an owner or operator may assert a civil an 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 owner or operator fails to meet its the 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 facilities a 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 an or usual manner; and could not have been prevented through careful Formatted: Font: Courier New, 12 pt

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(ii) Repairs were made as expeditiously as possible whenthe 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 Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (vii) Your All 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 30 45 days of the initial occurrence of the exceedance of the standard in this subpart to demonstrate, with all necessary supporting documentation, that Formatted: Font: Courier New, 12 pt

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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.
* * * * *

3 8

. 32. Section 63.823 is revised to read as follows:
**§63.823 Standards: General.** Formatted: Font: Courier New, 12 pt, Not Bold

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(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 Formatted: Font: Courier New, 12 pt, Not Bold Formatted: Font: Courier New, 12 pt

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* * * * *

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 Formatted: Indent: First line: 0.5", No bullets or numbering Formatted: Font: Courier New, 12 pt

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**§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 Formatted: Font: Courier New, 12 ptPage **68** of **88**

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(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); Formatted: Indent: Left: 0.67", No bullets or numbering Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold ( 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 betreated as a crossreference to 63.823(b). Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold §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 betreated 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. Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt
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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold §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 betreated 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 betreated as a crossreference to 63.830(b)(6)(v). Formatted: Font: Courier New, 12 pt

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§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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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (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 Formatted: Font: Not ItalicPage **74** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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, you an owner or operator may assert a civil an 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 owner or operator fails to meet it s the 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 facilities a 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 Formatted: Font: Courier New

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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 whenthe 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 ; andPage **76** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold Formatted: Default Paragraph Font, Font: Courier New, 12 pt Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold (G) Your All 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 30 45 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) ofPage **77** of **88**

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Formatted: Default Paragraph Font, Font: Courier New, 12 pt, Bold 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. Formatted: Font: Courier New, 12 pt

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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 Formatted: Font: Courier New, 12 pt

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* * * * *

55. 41. Section 63.1257 is amended by revising paragraph s paragraph (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 Formatted: Indent: First line: 0.5", No bullets or numbering, Tab stops: Not at 0.39" Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt, Underline Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt, Underline Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt, Not ItalicPage **80** of **88**

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(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 Formatted: Font: Courier New, 12 pt

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56. 42. Section 63.1258 is amended by removing paragraph (b)(8)(iv).

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. **§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 Formatted: Tab stops: 0.5", Left + 1.25", Left + Not at 0.39" + 1.51" Formatted: Font: Courier New, 12 pt Formatted: No bullets or numbering, Tab stops: 0.39", Left + 1.51", Left + Not at 0.5" + 1.25" Formatted: Font: Courier New, 12 pt

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. 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.

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(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 Formatted: Font: Courier New, 12 pt

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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 Formatted: updatebodytest, Font: Courier New, 12 pt

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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. R evising Removing 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); Formatted: Font: Courier New, 12 pt

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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 S ee 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 betreated 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

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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 S ee 63.1257(a) text. Any cross-reference to 63.7(e)(1) in any other general provision incorporated by reference shall betreated as a crossreference to 63.1257(a).
63.7 (e)(2)-(4) Performance tests Yes Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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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 S ubpart GGG specifies recordkeeping requirements. 63.10(c)(11) Malfunction corrective action recordkeeping requirement No S ubpart GGG specifies recordkeeping requirements.

63.10(c)(12)- (14) Additional recordkeeping requirements for sources with continuous monitoring Yes Formatted: Font: Courier New, 12 pt Formatted: Font: Courier New, 12 pt

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* * * * * * * 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 S ubpart GGG specifies reporting requirements.

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