Okla. Admin. Code § 252:100-39-47

Current through Vol. 42, No. 1, September 16, 2024

Section 252:100-39-47 - Control of VOC emissions from aerospace industries coatings operations

(a)Applicability.

(1) Except as noted in OAC 252:100-39-47(a)(2) and (3), this Section applies to existing or new aerospace vehicle and component coating operations at aerospace manufacturing, rework, or repair facilities located in Tulsa County that have the potential to emit 10 TPY or more or actual emissions of 100 pounds or more per 24-hour day, on a monthly average, of VOC from coating operations. For purposes of this Section, coating operations include associated cleaning operations as specified in OAC 252:100-39-47(d)(4) and surface preparation. Coating operations subject to this Section are exempt from the requirements of OAC 252:100-37-25 and 252:100-37-27.

(2) This Section does not apply to manufacturing, rework, or repair operations involving space vehicles or rework or repair operations performed on antique aerospace vehicles or components.

(3) This Section does not apply to the following activities: research and development, quality control, laboratory testing, and electronic parts and assemblies (except for cleaning and coating of completed assemblies).

(4) Compliance with 40 CFR Part 63, Subpart GG is deemed to be compliance with all requirements of this Section.

(b)References to 40 CFR. References to the aerospace NESHAP 40 CFR Part 63, Subpart GG refers to that subpart as it existed on August 3, 2016.

(c)Definitions. Definitions of terms used in this Section are found in 40 CFR Section 63.742 and Appendix A of 40 CFR Part 63, Subpart GG, which is incorporated by reference in OAC 252:100-2 and Appendix Q to Chapter 100.

(d)Standards and requirements. Coating operations subject to this section shall comply with the requirements specified in paragraph (1) of this subsection for operations uncontrolled for VOC, and in paragraph (3) of this subsection for operations that are controlled for VOC. All coating operations subject to this section shall comply with paragraphs (2), (4), and (5) of this subsection.

(1)VOC content of coatings. Each owner or operator of coating operations that are uncontrolled shall comply with the VOC content limits specified in paragraphs (d)(1)(A) through (C).

(A)VOC content limits for specialty coatings.

(i) No specialty coatings that contain VOC in excess of the limits specified in Appendix N of this Chapter shall be applied to aerospace vehicles or components. The VOC content of specialty coatings shall include any VOC-containing materials added to the original coating supplied by the manufacturer.

(ii) The VOC content limits listed in Appendix N of this Chapter do not apply to touch-up, aerosol, and United States Department of Defense (DOD) "classified" coatings.

(B)VOC content limits for primers and topcoats. Each coating operation utilizing primers and topcoats (including self-priming topcoats) that are not specialty coatings listed in Appendix N of this Chapter, shall comply with the VOC content limits contained in 40 CFR Section 63.745(c)(2) and (c)(4).

(C)VOC content limits for chemical milling maskants. Each chemical milling maskant operation utilizing chemical milling maskants (Type I/II) that are not specialty coatings listed in Appendix N of this Chapter, shall comply with the VOC content limits contained in 40 CFR Section 63.747(c)(2) and the exemptions in 40 CFR Section 63.747(c)(3).

(D)Exemption of low volume coating usage. The requirements of OAC 252:100-39-47(d)(1) do not apply to the use of primers, topcoats, chemical milling maskants, and specialty coatings for which the annual total of each separate formulation used at the facility does not exceed 50 gal and the combined annual total of all such primers, topcoats, chemical milling maskants, and specialty coatings used at the facility does not exceed 200 gal. Primers, topcoats, and chemical milling maskants exempt under OAC 252:100-39-47(a) are not included in the 50 and 200 gal limits.

(E)Compliance determination.

(i) Coatings used at facilities subject to this Section shall be deemed in compliance when the VOC content of these coatings comply with the requirements of OAC 252:100-39-47(d)(1).

(ii) For purposes of determining compliance with content limits in OAC 252:100-39-47(d)(1), VOC will be measured by the approved test methods. Where such a method also inadvertently measures compounds that are exempt solvents, an owner or operator may exclude these exempt solvents when determining compliance with an emission standard.

(2)Application equipment. Each primer, topcoat, or specialty coating application operation subject to this Section shall comply with the requirements and exemptions specified in 40 CFR Section 63.745(f).

(3)Control equipment.

(A) Coating operations that use a control method for compliance with this section shall comply with paragraph (i) or (ii):

(i)Control equipment efficiency. Each owner or operator shall control VOC emissions by using approved air pollution control equipment with a combined VOC emissions capture and control equipment efficiency of 81% or greater by weight.

(ii)Alternative control method. Each owner or operator shall comply with the control requirements in 40 CFR Section 63.745(d) for any primer, topcoat, or specialty coating operation or 40 CFR Section 63.747(d) for any chemical milling maskant operation.

(B)Compliance determination. When control equipment is used to comply with this section, compliance shall be determined in accordance with 40 CFR Section 63.749(d) and (h).

(4)Housekeeping measures and solvent cleaning operations.

(A) Housekeeping measures and solvent cleaning operations (hand-wipe cleaning, spray gun cleaning, and flush cleaning) subject to this Section shall comply with the requirements and exemptions contained in 40 CFR Section 63.744.

(B) Housekeeping measures and solvent cleaning operations subject to OAC 252:100-39-47(d)(4)(A) shall be considered in compliance with subparagraph (A) when the requirements in 40 CFR Section 63.749(c) are met.

(C) Housekeeping measures and solvent cleaning operations subject to this Section are exempt from the requirements of OAC 252:100-39-42.

(5)General standards. The handling and transfer of primers, topcoats, and chemical milling maskants to or from containers, tanks, vats, vessels, and piping systems shall be handled in a manner that minimizes spills.

(e)Monitoring.

(1) Each owner or operator who chooses to comply with the VOC content limits of OAC 252:100-39-47(d)(1)(A), (B), and /or (C) by using approved air pollution control equipment shall submit a monitoring plan that specifies the applicable operating parameter value, or range of values, to ensure ongoing compliance with OAC 252:100-39-47(d)(3) of this Section. The monitoring device shall be installed, calibrated, operated, and maintained in accordance with the manufacturer's specifications.

(2) Each owner or operator using an enclosed spray gun cleaner shall visually inspect the seals and all other potential sources of leaks at least once per month. Each inspection shall occur while the spray gun cleaner is in operation.

(3) Any source that complies with the monitoring requirements of 40 CFR Section 63.751 is deemed to be in compliance with the requirements of OAC 252:100-39-47(e).

(f)Recordkeeping requirements.

(1)Coating operations.

(A) Each owner or operator of primer and topcoat application operations or chemical milling maskant application operations shall comply with the recordkeeping requirements of 40 CFR Section 63.752 as appropriate.

(B) Each owner or operator of coating operations using specialty coatings listed in Appendix N of this Chapter shall comply with the following recordkeeping requirements.

(i) They shall maintain a current list of coatings in use showing category and as-applied VOC content of each coating.

(ii) They shall record coating usage on an annual basis. Methods used may include, but are not limited to, inventory records.

(2)Cleaning operations. Each owner or operator subject to the solvent cleaning operation requirements in OAC 252:100-39-47(d)(4) shall:

(A) for hand-wipe cleaning operations, keep the records required by 40 CFR Section 63.752(b)(2), (3), and/or (4) as appropriate;

(B) for enclosed spray gun cleaning operations, keep the records required by 40 CFR Section 63.752(b)(5).

(3)Control equipment. Each owner or operator using control equipment under OAC 252:100-39-47(d)(3) shall record monitoring parameters as specified in the monitoring plan required under OAC 252:100-39-47(e)(1).

(4)Alternative recordkeeping compliance. Any source that complies with the recordkeeping requirements of 40 CFR Section 63.752 is deemed to be in compliance with the requirements of OAC 252:100-39-47(f).

(g)Test methods.

(1)Coatings which are not waterborne (water-reducible). For coatings which are not waterborne, determine the VOC content of each formulation (less water and less exempt solvents) as applied using manufacturer's supplied data or Method 24 of 40 CFR Part 60, Appendix A. If there is a discrepancy between the manufacturer's formulation data and the results of the Method 24 analysis, compliance shall be based on the results from the Method 24 analysis.

(2)Waterborne (water-reducible) coatings. For waterborne coatings, manufacturer's supplied data alone can be used to determine the VOC content of each formulation.

(3)Cleaning solvents. Solvent composition and vapor pressure for cleaning solvents used in hand-wipe cleaning operations subject to OAC 252:100-39-47(d)(4)(A) shall be determined as specified in 40 CFR Section 63.750(a) and (b).

(4)Control equipment. Measurements of VOC emissions from control equipment as allowed by OAC 252:100-39-47(d)(3) shall be conducted in accordance with EPA Methods 18, 25, and/or 25A of 40 CFR Part 60, Appendix A.

(5)Alternative test method compliance. Any source that complies with the test method requirements of 40 CFR Section 63.750 is deemed to be in compliance with the requirements of OAC 252:100-39-47(g).

(h)Compliance date.

(1) The requirements of this Section shall be considered reasonably available control technology (RACT) for control of VOC emissions from vehicle and component coating operations at aerospace manufacturing, rework, or repair facilities in Tulsa County. New or modified sources shall be in compliance upon start-up.

(2) Any source that complies with the compliance dates and determinations of 40 CFR Section 63.749 is deemed to be in compliance with the requirements of OAC 252:100-39-47(h).

Okla. Admin. Code § 252:100-39-47

Added at 11 Ok Reg 977, eff 1-14-94 (emergency); Added at 11 Ok Reg 2031, eff 5-26-94; Amended at 16 Ok Reg 1774, eff 6-11-99; Amended at 19 Ok Reg 2883, eff 7-22-02 (emergency); Amended at 20 Ok Reg 1137, eff 6-1-03

Amended by Oklahoma Register, Volume 37, Issue 24, September 1, 2020, eff. 9/15/2020