Current through Register Vol. 63, No. 3, March 1, 2024
(1) No owner or
operator of an aerospace component coating facility may emit into the
atmosphere VOCs in excess of the following limits, expressed as pounds VOC per
gallon of coating applied, excluding water and exempt solvents, unless an
alternative emission limit is approved by DEQ pursuant to section (4) or
emissions to the atmosphere are controlled to an equivalent level pursuant to
section (10):
(a) Primer - 2.9
pounds/gallon;
(b) Interior Topcoat
- 2.8 pounds/gallon;
(c) Electric
or Radiation Effect Coating - 6.7 pounds/gallon;
(d) Extreme Performance Interior Topcoat -
3.5 pounds/gallon;
(e) Fire
Insulation Coating - 5.0 pounds/gallon;
(f) Fuel Tank Coating - 6.0
pounds/gallon;
(g) High Temperature
Coating for conditions between 350° F. -500° F. - 6.0
pounds/gallon;
(h) Sealant - 5.0
pounds/gallon;
(i) Self-Priming
Topcoat - 3.5 pounds/gallon;
(j)
Topcoat - 3.5 pounds/gallon;
(k)
Pretreatment Wash Primer - 3.5 pounds/gallon;
(l) Sealant Bonding Primer - 6.0
pounds/gallon;
(m) Temporary
Protective Coating - 2.1 pounds/gallon;
(2) Exemptions: This rule does not apply to
the following:
(a) The exterior of fully
assembled airplanes painted out of doors, high temperature coatings (for
conditions over 500° F.), adhesive bonding primer, flight test coatings,
and space vehicle coatings;
(b)
Sources whose potential emit from activities identified in section (1) before
add on controls of VOCs are less than ten tons per year (or 3 pounds VOC/hour
or 15 pounds VOC/day actual);
(c)
The use of separate coating formulations in volumes of less than 20 gallons per
calendar year. No source may use more than a combined total of 250 gallons per
calendar year of exempt coatings. Records of coating usage must be maintained
as per section (8); or
(d) Sources
used exclusively for chemical or physical analysis or determination of product
quality and coating performance (such as research facilities and laboratories)
unless:
(A) The operation of the source is an
integral part of the production process; or
(B) The emissions from the source exceed 363
kilograms (800 pounds) in any calendar month.
(3) Exceptions:
(a) On a case-by-case basis, DEQ may approve
exceptions to the emission limits specified in section (1), upon documentation
by the source that an alternative emission limit would satisfy the federal
criteria for RACT;
(b) Included in
this documentation must be a complete analysis of technical and economic
factors which:
(A) Prevent the source from
using both compliance coatings and pollution control devices; and
(B) Justify the alternative emission limit
sought by the source.
(c)
The alternative emission limit approved by DEQ will be incorporated into the
source's Air Contaminant Discharge Permit and will be effective upon approval
by EPA as a source-specific SIP revision.
(4) Applicability: This rule applies to each
coating line, which includes the application area, flashoff area, air and
forced air dryer, and oven used in the surface coating of aerospace components
in subsections (1)(a) through (m). If more than one emission limitation in this
rule applies to a specific coating, then the most stringent emission limitation
must be applied.
(5) Solvent
Evaporation Minimization:
(a) Closed
containers must be used for the storage or disposal of cloth or paper used for
solvent surface preparation and cleanup;
(b) Fresh and spent solvent must be stored in
closed containers;
(c) Organic
compounds may not be used for the cleanup of spray equipment unless equipment
is used to collect the cleaning compounds and to minimize their
evaporation;
(d) Containers of
coating, catalyst, thinner, or solvent may not be left open to the atmosphere
when not in use.
(6)
Stripper Limitations: No stripper may be used which contains more than 400
grams/liter (3.3 lbs./gal.) of VOC or which has a true vapor pressure of 1.3
kPa (0.19 psia) at actual usage temperature.
(7) Maskant for Chemical Processing
Limitation: No maskant may be applied for chemical processing unless the VOC
emissions from coating operations are reduced by 85 percent, or the coating
contains less than 600 grams of VOC per liter (5.0 pounds/gallon) of coating
excluding water, as applied.
(8)
Compliance determination: Compliance with this rule must be determined by
testing in accordance with 40 CFR part 60, Appendix A, Method 24 for
determining the VOC content of the coating materials. Emissions from the
coating processes and/or VOC emissions control efficiencies must be determined
by testing in accordance with 40 CFR part 60, Appendix A, Method 18, 25,
California Method ST-7, a material balance method, or an equivalent plant
specific method approved by EPA and DEQ and on file with DEQ. The limit in
section (1) of VOC in the coating is based upon an assumed solvent density, and
other assumptions unique to a coating line; where conditions differ, such as a
different solvent density, a plant specific limit may be submitted to DEQ and
EPA for approval.
(9) Reduction
Method: The emission limits of section (1) must be achieved by:
(a) The application of a low solvent content
coating technology;
(b) A vapor
collection and disposal system; or
(c) An equivalent means of VOC removal. The
equivalent means must be approved by DEQ and will be incorporated in the
source's Air Contaminant Discharge Permit or Title V Operating Permit, and will
be effective upon approval by EPA as a source-specific SIP revision. Other
alternative emission controls approved by DEQ and allowed by EPA may be used to
provide an equivalent means of VOC removal.
(10) Recordkeeping Requirements:
(a) A current list of coatings must be
maintained which provides all of the coating data necessary to evaluate
compliance, including the following information, where applicable:
(A) A daily record indicating the mix ratio
of components used; and
(B) The VOC
content of the coating as applied.
(b) A monthly record must be maintained
indicating the type and amount of solvent used for cleanup and surface
preparation;
(c) A monthly record
must be maintained indicating the amount of stripper used;
(d) Such records must be retained and
available for inspection by DEQ for a period of five years.
[NOTE: This rule is included in the State of Oregon Clean Air
Act Implementation Plan that EQC adopted under OAR 340-200-0040.]
[NOTE: View a PDF of California Test Methods by clicking on
"Tables" link below.]
[NOTE: View a PDF of referenced EPA Methods by clicking on
"Tables" link below OAR 340-232-8010.]
To view attachments referenced in rule text,
click here to view
rule.
Statutory/Other Authority: ORS
468.020,
468A.025 & 468A.070
Statutes/Other Implemented: ORS
468A.025 &
468A.070