25 Pa. Code § 129.67b - Control of VOC emissions from offset lithographic printing presses and letterpress printing presses
(a)
Applicability.
(1) Except as
specified in paragraph (3), this section applies to the owner and operator of
an offset lithographic printing press or a letterpress printing press, or both,
if the press meets one or a combination of the following:
(i)
Add-on air pollution control
device. A single heatset web offset lithographic printing press or
heatset web letterpress printing press that has potential emissions from the
dryer, before consideration of add-on controls, of at least 25 tpy of VOCs from
all heatset inks (including varnishes), coatings and adhesives combined.
(ii)
Letterpress
printing . One or more letterpress printing presses if the total actual
VOC emissions from all inks (including varnishes), coatings and adhesives
combined from all letterpress printing presses and all VOC emissions from
related cleaning activities at the facility are equal to or greater than 450
pounds (204.1 kilograms) per month or 2.7 tons (2,455 kilograms) per 12-month
rolling period, before consideration of add-on controls.
(iii)
Offset lithographic
printing . One or more offset lithographic printing presses if the
total actual VOC emissions from all inks (including varnishes), coatings,
adhesives and fountain solutions combined from all offset lithographic printing
presses and all VOC emissions from related cleaning activities at the facility
are equal to or greater than 450 pounds (204.1 kilograms) per month or 2.7 tons
(2,455 kilograms) per 12-month rolling period, before consideration of add-on
controls.
(iv)
Offset
lithographic printing and letterpress printing . One or more offset
lithographic printing presses and one or more letterpress printing presses if
the total actual VOC emissions from all inks (including varnishes), coatings,
adhesives and fountain solutions combined and all VOC emissions from related
cleaning activities at the facility are equal to or greater than 450 pounds
(204.1 kilograms) per month or 2.7 tons (2,455 kilograms) per 12-month rolling
period, before consideration of add-on controls.
(v)
Emissions below 450 pounds per
month and 2.7 tons per 12-month rolling period. The total actual VOC
emissions from all inks (including varnishes), coatings, adhesives and fountain
solutions combined from all offset lithographic printing presses, all
letterpress printing presses and all VOC emissions from related cleaning
activities at the facility are less than 450 pounds (204.1 kilograms) per month
and 2.7 tons (2,455 kilograms) per 12-month rolling period, before
consideration of add-on controls.
(2) The owner or operator of an offset
lithographic printing press subject to paragraph (1) may use the VOC emission
retention factors and capture efficiency factors specified in subsection (l) to
determine the amount of potential or actual VOC emissions that is available for
capture and control from the inks (including varnishes), fountain solutions and
cleaning solutions used on the offset lithographic printing press.
(3) VOCs from adhesives used at a facility
that are not used or applied on or with an offset lithographic printing press
or a letterpress printing press are not subject to this section and may be
regulated under §
129.77 or Chapter 130, Subchapter
D (relating to control of emissions from the use or application of adhesives,
sealants, primers and solvents; and adhesives, sealants, primers and
solvents).
(b)
Existing RACT permit. This section supersedes the requirements
of a RACT permit issued to the owner or operator of a source subject to
subsection (a) prior to January 1, 2015, under §§
129.91-129.95 (relating to stationary
sources of NOx and VOCs) to control, reduce or minimize
VOCs from an offset lithographic printing press or a letterpress printing
press, or both, except to the extent the RACT permit contains more stringent
requirements.
(c)
Emission
limits for cleaning solutions and fountain solutions used in or on printing
presses subject to this section.
(1)
Cleaning solutions. Beginning January 1, 2015, a person
subject to subsection (a)(1)(i), (ii), (iii) or (iv) may not cause or permit
the emission into the outdoor atmosphere of VOCs from cleaning solutions used
in or on an offset lithographic printing press or a letterpress printing press
unless the following conditions are met:
(i)
The cleaning solutions used must meet one or both of the following VOC limits:
(A) A VOC composite partial vapor pressure
less than 10 millimeters of mercury at 68°F (20°C).
(B) A VOC content less than 70% by
weight.
(ii) The use of
one or more cleaning solutions with a higher VOC composite partial vapor
pressure or higher VOC content, or both, than is listed in subparagraph (i) is
limited to 110 gallons per year, combined, of all cleaning solutions that
exceed the limits in subparagraph (i).
(2)
Fountain solutions.
Except as specified in paragraph (3), beginning January 1, 2015, a person
subject to subsection (a)(1)(i), (iii) or (iv) may not cause or permit the
emission into the outdoor atmosphere of VOCs from a fountain solution used in
an offset lithographic printing press unless the fountain solution meets one or
more of the following VOC limits.
(i) For
each heatset web offset lithographic printing press, the press-ready (as
applied) fountain solution must meet one of the following limits:
(A) A VOC content of 1.6% or less by
weight.
(B) A VOC content of 3% or
less by weight if the fountain solution is refrigerated below 60°F
(15.5°C).
(C) A VOC content of
5% or less by weight and no alcohol in the fountain solution .
(D) Another method that achieves a level of
control of VOC emissions from the press-ready (as applied) fountain solution
equal to or better than the methods listed in clauses (A)-(C).
(ii) For each sheet-fed offset
lithographic printing press, the press-ready (as applied) fountain solution
must meet one of the following limits:
(A) A
VOC content of 5% or less by weight.
(B) A VOC content of 8.5% or less by weight
if the fountain solution is refrigerated below 60°F (15.5°C).
(C) A VOC content of 5% or less by weight and
no alcohol in the fountain solution .
(D) Another method that achieves a level of
control of VOC emissions from the press-ready (as applied) fountain solution
equal to or better than the methods listed in clauses
(A)-(C).
(iii) For each
non-heatset web offset lithographic printing press, the press-ready (as
applied) fountain solution shall contain a VOC content of 5% or less by weight
and no alcohol in the fountain solution .
(3)
Fountain solution
exceptions. The control requirements under paragraph (2) for a
fountain solution do not apply to the owner or operator of either of the
following:
(i) A sheet-fed offset lithographic
printing press with maximum sheet size 11 x 17 inches or smaller.
(ii) An offset lithographic printing press
with total fountain solution reservoir of less than 1 gallon.
(d)
Emission
limits for heatset web offset lithographic printing presses and heatset web
letterpress printing presses.
(1)
Except as specified in paragraph (2) or (3), beginning January 1, 2015, a
person subject to subsection (a)(1)(i) may not cause or permit the emission
into the outdoor atmosphere of VOCs from a heatset web offset lithographic
printing press or a heatset web letterpress printing press, or both, unless the
overall weight of VOCs emitted to the atmosphere from the heatset dryer is
reduced through the use of vapor recovery or oxidation or another method that
is authorized under §
129.51(a)
(relating to general). The heatset dryer pressure must be maintained lower than
the press room area pressure so that air flows into the heatset dryer at all
times when the press is operating.
(i) The
VOC control efficiency of an add-on air pollution control device for a heatset
dryer, determined in accordance with subsection (h), must meet either of the
following:
(A) At least 90% for an add-on air
pollution control device whose first installation date was prior to January 1,
2015.
(B) At least 95% for an
add-on air pollution control device whose first installation date is on or
after January 1, 2015.
(ii) The first installation date is the first
date of operation for a source or a control device. This date will not change
if the source or control device is moved to a new location or if the control
device is later used to control a new source .
(iii) The owner or operator of the printing
press may request the Department 's approval for an alternative limitation if
the following requirements are met:
(A) The
request is submitted to the Department in writing.
(B) The request demonstrates one of the
following:
(I) The inlet VOC concentration to
the control device is so low that compliance with the 90% or 95% overall
efficiency in subparagraph (i) is not achievable.
(II) The press is using a combination dryer
and oxidizer or other control equipment configuration that does not have an
inlet that meets the requirement for testing specified in subsection
(h).
(C) The request
demonstrates the minimum outlet VOC concentration that the unit can achieve,
not to exceed 20 ppm as hexane (40 ppm as propane) on a dry basis.
(iv) The alternative limitation
requested under subparagraph (iii) must be approved by the Department in a plan
approval, operating permit or Title V permit .
(2) This subsection does not apply for one or
a combination of the following circumstances:
(i) The press is used for book
printing.
(ii) The press has a
maximum web width of 22 inches or less.
(iii) The press is operated with one or a
combination of the following inks, coatings or varnishes:
(A) Waterborne coatings.
(B) Ultra-violet light or electron beam
radiation cured materials.
(C)
Sheet-fed or non-heatset web inks.
(D) Sheet-fed or non-heatset web
varnishes.
(3)
This subsection does not apply to the owner or operator of the press if the
Department has issued a plan approval, operating permit or Title V permit to
the owner or operator prior to January 1, 2015, establishing a
Federally-enforceable limitation to limit the potential emissions of VOC from
the offset lithographic printing press or the letterpress printing press below
25 tpy, before consideration of add-on controls.
(e)
Compliance and monitoring
requirements.
(1)
Add-on air
pollution control device. The owner or operator of a heatset web
offset lithographic printing press or heatset web letterpress printing press
subject to this section using an add-on air pollution control device in
accordance with subsection (d) shall comply with the following requirements:
(i) The add-on air pollution control device
shall be equipped with the applicable monitoring equipment and the monitoring
equipment shall be installed, calibrated, operated and maintained according to
manufacturer's specifications at all times the add-on air pollution control
device is in use. If the add-on air pollution control device is a:
(A) Noncatalytic thermal oxidizer, the
minimum combustion or operating temperature must be continuously monitored. The
temperature reading shall be recorded in accordance with subsection (f)(1) at
least once every 15 minutes while the noncatalytic thermal oxidizer is
operating.
(B) Catalytic thermal
oxidizer:
(I) The inlet gas temperature must
be continuously monitored. The temperature reading shall be recorded in
accordance with subsection (f)(1) at least once every 15 minutes while the
thermal catalytic oxidizer is operating.
(II) A catalyst activity test shall be
performed a minimum of one time per rolling 2-year period.
(C) Control device other than that specified
in clause (A) or (B), parameters specific to the control device must be
continuously monitored. The parameters shall be recorded in accordance with
subsection (f)(1) at least once every 15 minutes while the control device is
operating.
(ii) The
add-on air pollution control device specified in subparagraph (i) must be
operated at a 3-hour average temperature not lower than 50°F below the
average temperature demonstrated during the most recent compliant source test
approved by the Department .
(iii)
The add-on air pollution control device specified in subparagraph (i) must be
in operation at all times that the source is operating.
(iv) The negative dryer pressure shall be
established during the initial test using an air flow direction indicator, such
as a smoke stick or aluminum ribbons, or a differential pressure gauge. Capture
efficiency testing and continuous dryer air flow monitoring are not
required.
(v) The add-on air
pollution control device shall be approved, in writing, by the Department in a
plan approval, operating permit or Title V permit prior to
use.
(2)
Fountain
solution . The owner or operator of an offset lithographic printing
press subject to this section that is required to meet one of the fountain
solution VOC limits of subsection (c)(2) shall demonstrate compliance by using
one or more of the following methods:
(i)
Analysis of a sample of the press-ready (as applied) fountain solution for VOC
content using EPA Reference Method 24, Determination of Volatile Matter
Content, Water Content, Density, Volume Solids , and Weight Solids of Surface
Coatings, codified in 40 CFR Part 60, Appendix A, including updates
and revisions.
(ii) Maintenance
onsite of MSDS, CPDS or other data provided by the manufacturer of the fountain
solution that indicates the VOC content of the press-ready (as applied)
fountain solution .
(iii)
Calculation of the VOC content of the press-ready (as applied) fountain
solution that combines the EPA Reference Method 24 analytical VOC content data
for each of the concentrated components or additives used to prepare the
press-ready fountain solution .
(A) The VOC
content data for each of the concentrated components or additives shall be
combined in the proportions in which the concentrated components or additives
are mixed to make the batch of press-ready (as applied) fountain
solution .
(B) The VOC content shall
be calculated one time for each recipe of press-ready (as applied) fountain
solution . The recipe name, VOC content for each concentrated component or
additive and fountain solution mix ratio shall be recorded in a
logbook.
(C) The EPA Reference
Method 24 analysis of the concentrated components or additives used to prepare
the press-ready (as applied) fountain solution may be performed by the supplier
of the components or additives and these results provided to the owner or
operator of the affected press.
(iv) Measurement of the recirculating
reservoir temperature of a refrigerated press-ready (as applied) fountain
solution specified in subsection (c)(2)(i)(B) or (ii)(B) with a thermometer or
other temperature detection device capable of reading to 0.5°F (0.28°C)
to ensure that the temperature of the refrigerated fountain solution containing
alcohol is maintained below 60°F (15.5°C) at all times. The temperature
on the thermometer or other temperature detection device shall be continuously
monitored. The temperature reading shall be recorded at least once per
operating day to verify that the refrigeration system is operating
properly.
(v) Monitoring of the
press-ready (as applied) fountain solution for alcohol concentration or VOC
content with one or more of the following instruments:
(A) A refractometer or a hydrometer to
monitor the fountain solution alcohol concentration. The instrument must:
(I) Be corrected for temperature one time per
8-hour shift.
(II) Have a visual,
analog or digital readout with an accuracy of 0.5%.
(III) Be calibrated with a standard solution
for the type of alcohol used in the fountain solution .
(B) A conductivity meter to determine the
fountain solution VOC content. Reading for the fountain solution must be
referenced to the conductivity of the incoming water.
(vi) Another method to determine compliance
with the VOC content limits for fountain solutions in subsection (c)(2) if the
following requirements are met:
(A) The
facility owner or operator submits a request, in writing, to the appropriate
regional office of the Department for approval of the alternative
method .
(B) The request
demonstrates that the alternative method provides results that accurately
determine the fountain solution VOC content.
(C) The Department provides prior written
approval of the alternative method .
(3)
Cleaning solution . The
owner or operator of an offset lithographic printing press or a letterpress
printing press subject to this section shall demonstrate compliance with the
VOC content limit or VOC composite partial vapor pressure limit for cleaning
solutions in subsection (c)(1) by one or more of the following methods:
(i) Analysis of a sample of press-ready (as
applied) cleaning solution for VOC content using EPA Reference Method
24.
(ii) Use of the equation in
subsection (j) to calculate the composite partial vapor pressure of the
press-ready (as applied) cleaning solution .
(iii) Use of the methods in subsection (k) to
determine the VOC composite partial vapor pressure of a single concentrated
component or additive used to prepare the press-ready (as applied) cleaning
solution .
(iv) Maintenance onsite
of MSDS, CPDS or other data provided by the manufacturer of the press-ready (as
applied) cleaning solution that indicates the VOC content or the VOC composite
partial vapor pressure , or both, of the press-ready (as applied) cleaning
solution .
(v) Calculation of the
VOC content or the VOC composite partial vapor pressure , or both, of the
press-ready (as applied) cleaning solution that combines the EPA Reference
Method 24 analytical VOC content data or analytical VOC composite partial vapor
pressure data for each of the concentrated components or additives used to
prepare the press-ready (as applied) cleaning solution .
(A) The VOC content data or VOC composite
partial vapor pressure data for each of the concentrated components or
additives shall be combined in the proportions in which the concentrated
components or additives are mixed to make the batch of press-ready (as applied)
cleaning solution .
(B) The VOC
content or VOC composite partial vapor pressure shall be calculated one time
for each recipe of press-ready (as applied) cleaning solution . The recipe name,
VOC content or VOC composite partial vapor pressure for each concentrated
component or additive and cleaning solution mix ratio shall be recorded in a
log book.
(C) The EPA Reference
Method 24 analysis of the concentrated components or additives used to prepare
the press-ready (as applied) cleaning solution may be performed or the VOC
composite partial vapor pressure data may be determined by the supplier of the
components or additives and these results provided to the owner or operator of
the affected press.
(vi)
Another method to determine compliance with the VOC content limits for cleaning
solutions in subsection (c)(1) if the following requirements are met:
(A) The facility owner or operator submits a
request, in writing, to the appropriate regional office of the Department for
approval of the alternative method .
(B) The request demonstrates that the
alternative method provides results that accurately determine the cleaning
solution VOC content or VOC composite partial vapor pressure .
(C) The Department provides prior written
approval of the alternative method .
(f)
Recordkeeping requirements.
Beginning January 1, 2015, the owner or operator of a printing press
subject to this section shall maintain records sufficient to demonstrate
compliance with this section. Records maintained for compliance demonstrations
may include purchase, use, production and other records.
(1) An owner or operator using an add-on air
pollution control device shall maintain records sufficient to demonstrate
compliance with subsection (e), including the following:
(i) Temperature reading of the add-on air
pollution control device.
(ii)
Maintenance performed on the add-on air pollution control device and monitoring
equipment, including the date and type of maintenance.
(iii) Catalyst activity test performed, if
applicable.
(2) An owner
or operator subject to subsection (a)(1)(i), (ii), (iii) or (iv) shall maintain
records of cleaning solutions and fountain solutions used at the facility ,
including:
(i) The following parameters for
each press ready blanket, roller or other cleaning solution :
(A) The name and identification number for
the blanket, roller or other cleaning solution .
(B) The VOC content (weight %) or VOC
composite partial vapor pressure of each cleaning solution as
applied.
(C) The volume used of
each cleaning solution as applied, if the owner or operator is using cleaning
solutions which exceed the limits in subsection (c)(1)(i).
(D) Records of cleaning solution monitoring
as required under subsection (e)(3).
(ii) The following parameters for each
press-ready (as applied) fountain solution :
(A) The VOC content (weight %).
(B) Records of fountain solution monitoring
as required under subsection (e)(2).
(3) An owner or operator claiming exemption
from a VOC control provision of this section based on potential or actual VOC
emissions , as applicable, shall maintain records that demonstrate to the
Department that the press or facility is exempt.
(4) The owner or operator may group materials
into classes using the highest VOC content in any material in a class to
represent that class of material.
(g)
Reporting requirements.
Beginning January 1, 2015, the owner or operator of an offset lithographic
printing press or a letterpress printing press subject to this section shall
meet the following reporting requirements:
(1)
The records required under subsection (f) shall be maintained onsite for 2
years unless a longer period is required by a plan approval or operating permit
issued under Chapter 127 (relating to construction , modification , reactivation
and operation of sources). The records shall be submitted to the Department in
an acceptable format upon receipt of a written request.
(2) The owner or operator of an offset
lithographic printing press or letterpress printing press required to
demonstrate VOC control efficiency in accordance with subsection (d) shall
submit reports to the Department in accordance with Chapter 139 (relating to
sampling and testing).
(h)
Sampling and testing.
(1) Sampling and testing shall be performed
as follows:
(i) Sampling of an ink, varnish ,
coating, fountain solution or cleaning solution and testing for the VOC content
of the ink, varnish , coating, fountain solution or cleaning solution shall be
performed in accordance with the procedures and test methods specified in
Chapter 139.
(ii) Sampling and
testing of an add-on air pollution control device shall be performed in
accordance with the procedures and test methods specified in Chapter 139 and
meet one of the following:
(A) Sampling and
testing shall be performed no later than 180 days after the compliance date of
the press.
(B) Sampling and testing
shall have been performed within 5 years prior to January 1, 2015, and
previously approved by the Department .
(2) The control efficiency shall be
determined using one or more of the following methods, as applicable, subject
to prior written approval by the Department . The method used to measure the
inlet concentration of VOC may be the same method used to determine the outlet
concentration of VOC unless use of the same method is determined to be
technically infeasible.
(i) EPA Reference
Method 25, Determination of Total Gaseous Nonmethane Organic Emissions
as Carbon, codified in 40 CFR Part 60, Appendix A, including updates
and revisions. EPA Reference Method 25 may be used if the total gaseous
nonmethane organic compound concentration is equal to or greater than 50 parts
per million by volume, measured as carbon.
(ii) EPA Reference Method 25A,
Determination of Total Gaseous Organic Concentration Using a Flame
Ionization Analyzer, codified in 40 CFR Part 60, Appendix A,
including updates and revisions. EPA Reference Method 25A may not be used if
the total gaseous nonmethane organic compound concentration at the outlet of
the add-on air pollution control device is equal to or greater than 50 parts
per million by volume, measured as carbon.
(iii) EPA Reference Method 18,
Measurement of Gaseous Organic Compound Emissions by Gas
Chromatography, codified in 40 CFR Part 60, Appendix A, including
updates and revisions. EPA Reference Method 18 may be used if the total gaseous
nonmethane organic compound concentration is equal to or greater than 50 parts
per million by volume, measured as carbon. EPA Reference Method 18 may be used
in conjunction with EPA Reference Method 25A to subtract emissions of exempt
VOCs.
(3) Other test
methods demonstrated to provide results that are acceptable for purposes of
determining compliance with this section may be used if prior approval is
obtained in writing from the Department and the EPA .
(i)
Work practice requirements for
cleaning activities.
(1) Except as
specified in paragraph (3), beginning January 1, 2015, the owner or operator of
an offset lithographic printing press or a letterpress printing press subject
to subsection (a)(1)(i), (ii), (iii) or (iv) shall comply with the following
work practices for cleaning activities at the facility :
(i) Store all VOC-containing cleaning
solutions, waste cleaning solutions and used shop towels in closed
containers.
(ii) Ensure that mixing
vessels and storage containers used for VOC-containing cleaning solutions,
waste cleaning solutions and used shop towels are kept closed at all times,
except when depositing or removing these solutions or shop towels.
(iii) Minimize spills of VOC-containing
cleaning solutions and waste cleaning solutions and clean up spills
immediately.
(iv) Convey
VOC-containing cleaning solutions, waste cleaning solutions and used shop
towels from one location to another in closed containers or pipes.
(2) The requirements in paragraph
(1) apply to the following activities:
(i)
Cleaning of a press, including blanket washing, roller washing, plate cleaners,
metering roller cleaners, impression cylinder cleaners and rubber
rejuvenators.
(ii) Cleaning of
press parts, including press parts that have been removed from the press for
cleaning.
(iii) Cleaning of ink,
coating or adhesive from areas around a press.
(3) The requirements in paragraph (1) do not
apply to the following activities:
(i)
Cleaning electronic components of a press.
(ii) Cleaning in pre-press (for example,
platemaking) operations.
(iii)
Cleaning in post-press (for example, binding) operations.
(iv) Using janitorial supplies (for example,
detergents or floor cleaners) for general cleaning around a press.
(v) The use of parts washers or cold cleaners
at an offset lithographic printing or a letterpress printing facility . The use
of parts washers and cold cleaners is regulated under §
129.63 (relating to degreasing
operations).
(j)
Composite partial vapor
pressure . The composite partial vapor pressure of organic compounds in
cleaning solutions shall be determined by one of the following procedures:
(1) Quantifying the amount of each compound
in the blend using gas chromatographic analysis, using an appropriate and
current ASTM test method with prior written approval by the
Department .
(2) Calculating the
composite partial vapor pressure using the following equation:
Click to view image
Where:
PPc = VOC composite partial
Wi = Weight of the "i"th VOC compound, in grams
Ww = Weight of water, in grams
We = Weight of the "e"th
MWi = Molecular weight of the "i"th VOC compound, in grams per g-mole, as given in chemical reference literature
MWw = Molecular weight of water, in grams per g-mole (18 grams per g-mole)
MWe = Molecular weight of the
"e"th
VPi =
(k)
Determination of vapor pressure of single organic compounds in cleaning
solutions. The vapor pressure of each single component compound shall
be determined from one or more of the following:
(1) An appropriate and current ASTM test
method with prior written approval by the Department .
(2) The most recent edition of one or more of
the following sources:
(i)
Vapour
Pressures of Pure Substances, Boublik, Elsevier Scientific Publishing
Company, New York.
(ii)
Perry's Chemical Engineers' Handbook, Green and Perry,
McGraw-Hill Book Company.
(iii)
CRC Handbook of Chemistry and Physics, CRC Press.
(iv)
Lange's Handbook of
Chemistry, McGraw-Hill Book Company.
(v) Additional sources approved by the
Department .
(l)
VOC retention factors and capture efficiency factors. As
specified in subsection (a)(2), if:
(1) A
portion of the VOCs contained in the ink or cleaning solution , or both, is
retained in the printed web substrate or in the shop towels used for cleaning,
the following VOC emission retention factors shall be used, as applicable:
(i) A 20% VOC emission retention factor for a
petroleum ink oil-based heatset ink printed on an absorptive substrate , meaning
80% of the petroleum ink oil content is emitted as VOC during the printing
process and is available for capture and control by an add-on air pollution
control device. The petroleum ink oil content of a heatset ink may be
determined from formulation data included on a CPDS or MSDS.
(ii) A 95% VOC emission retention factor for
a petroleum ink oil-based non-heatset web or non-heatset sheet-fed ink, meaning
5% of the petroleum ink oil content is emitted as VOC during the printing
process and is available for capture and control by an add-on air pollution
control device. The petroleum ink oil content of a non-heatset web or
non-heatset sheet-fed ink may be determined from formulation data included on a
CPDS or MSDS.
(iii) A 100% VOC
emission retention factor for vegetable ink oil-based heatset and non-heatset
inks.
(iv) A 50% VOC emission
retention factor for low VOC composite vapor pressure cleaning solutions in
shop towels if both of the following conditions are met:
(A) The VOC composite vapor pressure of the
cleaning solution is less than 10mm Hg at 20°C (68°F).
(B) The cleaning solutions and used shop
towels are kept in closed containers.
(2) A portion of the VOCs contained in one or
more of the ink, fountain solution or automatic blanket wash materials is
captured in the press dryer for control by the add-on air pollution control
device, the following capture efficiency factors shall be used, as applicable:
(i) A 100% VOC emission capture efficiency
for volatilized ink oils for oil-based heatset paste inks and varnishes as
specified in paragraph (1) if both of the following conditions are met:
(A) The press dryer is operating at negative
pressure relative to the surrounding pressroom.
(B) The air flow is into the press
dryer.
(ii) A 70% VOC
emission capture efficiency for a fountain solution that contains an alcohol
substitute .
(iii) A 40% VOC
emission capture efficiency for an automatic blanket wash if the VOC composite
vapor pressure of the cleaning solution is less than 10mm Hg at 20°C
(68°F).
Notes
The provisions of this § 129.67b issued under section
5(a)(1) and (8) of the
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