Terms used in this subpart are defined in the Clean Air Act (CAA), in 40 CFR 63.2, the General Provisions, and in this section as follows:
Affected source means the collection of dryers, refiners, blenders, formers, presses, board coolers, and other process units associated with the manufacturing of plywood and composite wood products. The affected source includes, but is not limited to, green end operations, refining, drying operations (including any combustion unit exhaust stream routinely used to direct fire process unit(s)), resin preparation, blending and forming operations, pressing and board cooling operations, and miscellaneous finishing operations (such as sanding, sawing, patching, edge sealing, and other finishing operations not subject to other NESHAP). The affected source also includes onsite storage of raw materials used in the manufacture of plywood and/or composite wood products, such as resins; onsite wastewater treatment operations specifically associated with plywood and composite wood products manufacturing; and miscellaneous coating operations (defined elsewhere in this section). The affected source includes lumber kilns at PCWP manufacturing facilities and at any other kind of facility.
Agricultural fiber means the fiber of an annual agricultural crop. Examples of agricultural fibers include, but are not limited to, wheat straw, rice straw, and bagasse.
Biofilter means an enclosed control system such as a tank or series of tanks with a fixed roof that contact emissions with a solid media (such as bark) and use microbiological activity to transform organic pollutants in a process exhaust stream to innocuous compounds such as carbon dioxide, water, and inorganic salts. Wastewater treatment systems such as aeration lagoons or activated sludge systems are not considered to be biofilters.
Capture device means a hood, enclosure, or other means of collecting emissions into a duct so that the emissions can be measured.
Capture efficiency means the fraction (expressed as a percentage) of the pollutants from an emission source that are collected by a capture device.
Catalytic oxidizer means a control system that combusts or oxidizes, in the presence of a catalyst, exhaust gas from a process unit. Catalytic oxidizers include regenerative catalytic oxidizers and thermal catalytic oxidizers.
Combustion unit means a dryer burner, process heater, or boiler. Combustion units may be used for combustion of organic HAP emissions.
Control device means any equipment that reduces the quantity of HAP emitted to the air. The device may destroy the HAP or secure the HAP for subsequent recovery. Control devices include, but are not limited to, thermal or catalytic oxidizers, combustion units that incinerate process exhausts, biofilters, and condensers.
Control system or add-on control system means the combination of capture and control devices used to reduce HAP emissions to the atmosphere.
Conveyor strand dryer means a conveyor dryer used to reduce the moisture of wood strands used in the manufacture of oriented strandboard, laminated strand lumber, or other wood strand-based products. A conveyor strand dryer is a process unit.
Conveyor strand dryer zone means each portion of a conveyor strand dryer with a separate heat exchange system and exhaust vent(s). Conveyor strand dryers contain multiple zones (e.g., three zones), which may be divided into multiple sections.
Deviation means any instance in which an affected source subject to this subpart, or an owner or operator of such a source:
(1) Fails to meet any requirement or obligation established by this subpart including, but not limited to, any compliance option, operating requirement, or work practice requirement;
(2) Fails to meet any term or condition that is adopted to implement an applicable requirement in this subpart, and that is included in the operating permit for any affected source required to obtain such a permit; or
(3) Fails to meet any compliance option, operating requirement, or work practice requirement in this subpart during startup, shutdown, or malfunction, regardless of whether or not such failure is permitted by this subpart. A deviation is not always a violation. The determination of whether a deviation constitutes a violation of the standard is up to the discretion of the entity responsible for enforcement of the standards.
Direct-fired process unit means a process unit that is heated by the passing of combustion exhaust through the process unit such that the process material is contacted by the combustion exhaust.
Dryer heated zones means the zones of a softwood veneer dryer or fiberboard mat dryer that are equipped with heating and hot air circulation units. The cooling zone(s) of the dryer through which ambient air is blown are not part of the dryer heated zones.
Dry forming means the process of making a mat of resinated fiber to be compressed into a reconstituted wood product such as particleboard, oriented strandboard, medium density fiberboard, or hardboard.
Dry rotary dryer means a rotary dryer that dries wood particles or fibers with a maximum inlet moisture content of less than or equal to 30 percent (by weight, dry basis) and operates with a maximum inlet temperature of less than or equal to 600 [deg]F. A dry rotary dryer is a process unit.
Engineered wood product means a product made with lumber, veneers, strands of wood, or from other small wood elements that are bound together with resin. Engineered wood products include, but are not limited to, laminated strand lumber, laminated veneer lumber, parallel strand lumber, wood I-joists, and glue-laminated beams.
Fiber means the discrete elements of wood or similar cellulosic material, which are separated by mechanical means, as in refining, that can be formed into boards.
Fiberboard means a composite panel composed of cellulosic fibers (usually wood or agricultural material) made by wet forming and compacting a mat of fibers. Fiberboard density generally is less than 0.50 grams per cubic centimeter (31.5 pounds per cubic foot).
Fiberboard mat dryer means a dryer used to reduce the moisture of wet-formed wood fiber mats by applying heat. A fiberboard mat dryer is a process unit.
Flame zone means the portion of the combustion chamber in a combustion unit that is occupied by the flame envelope.
Furnish means the fibers, particles, or strands used for making boards.
Glue-laminated beam means a structural wood beam made by bonding lumber together along its faces with resin.
Green rotary dryer means a rotary dryer that dries wood particles or fibers with an inlet moisture content of greater than 30 percent (by weight, dry basis) at any dryer inlet temperature or operates with an inlet temperature of greater than 600 [deg]F with any inlet moisture content. A green rotary dryer is a process unit.
Group 1 miscellaneous coating operations means application of edge seals, nail lines, logo (or other information) paint, shelving edge fillers, trademark/gradestamp inks, and wood putty patches to plywood and composite wood products (except kiln-dried lumber) on the same site where the plywood and composite wood products are manufactured. Group 1 miscellaneous coating operations also include application of synthetic patches to plywood at new affected sources.
Hardboard means a composite panel composed of inter-felted cellulosic fibers made by dry or wet forming and pressing of a resinated fiber mat. Hardboard generally has a density of 0.50 grams per cubic centimeter (31.5 pounds per cubic foot) or greater.
Hardboard oven means an oven used to heat treat or temper hardboard after hot pressing. Humidification chambers are not considered as part of hardboard ovens. A hardboard oven is a process unit.
Hardwood means the wood of a broad-leafed tree, either deciduous or evergreen. Examples of hardwoods include, but are not limited to, aspen, birch, poplar, and oak.
Hardwood veneer dryer means a dryer that removes excess moisture from veneer by conveying the veneer through a heated medium on rollers, belts, cables, or wire mesh. Hardwood veneer dryers are used to dry veneer with less than 30 percent softwood species on an annual volume basis. Veneer kilns that operate as batch units, veneer dryers heated by radio frequency or microwaves that are used to redry veneer, and veneer redryers (defined elsewhere in this section) that are heated by conventional means are not considered to be hardwood veneer dryers. A hardwood veneer dryer is a process unit.
Kiln-dried lumber means solid wood lumber that has been dried in a lumber kiln.
Laminated strand lumber (LSL) means a composite product formed into a billet made of thin wood strands cut from whole logs, resinated, and pressed together with the grain of each strand oriented parallel to the length of the finished product.
Laminated veneer lumber (LVL) means a composite product formed into a billet made from layers of resinated wood veneer sheets or pieces pressed together with the grain of each veneer aligned primarily along the length of the finished product. Laminated veneer lumber is also known as parallel strand lumber (PSL).
Lumber means boards or planks sawed or split from logs or timber, including logs or timber processed for use as utility poles or other wood components. Lumber can be either green (non-dried) or dried. Lumber is typically either air-dried or kiln-dried.
Lumber kiln means an enclosed dryer operated by applying heat to reduce the moisture content of lumber.
Medium density fiberboard (MDF) means a composite panel composed of cellulosic fibers (usually wood or agricultural fiber) made by dry forming and pressing of a resinated fiber mat.
Method detection limit means the minimum concentration of an analyte that can be determined with 99 percent confidence that the true value is greater than zero.
Miscellaneous coating operations means application of any of the following to plywood or composite wood products: edge seals, moisture sealants, anti-skid coatings, company logos, trademark or grade stamps, nail lines, synthetic patches, wood patches, wood putty, concrete forming oils, glues for veneer composing, and shelving edge fillers. Miscellaneous coating operations also include the application of primer to oriented strandboard siding that occurs at the same site as oriented strandboard manufacture and application of asphalt, clay slurry, or titanium dioxide coatings to fiberboard at the same site of fiberboard manufacture.
Molded particleboard means a shaped composite product (other than a composite panel) composed primarily of cellulosic materials (usually wood or agricultural fiber) generally in the form of discrete pieces or particles, as distinguished from fibers, which are pressed together with resin.
MSF means thousand square feet (92.9 square meters). Square footage of panels is usually measured on a thickness basis, such as \3/8\-inch, to define the total volume of panels. Equation 6 of Sec. 63.2262(j) shows how to convert from one thickness basis to another.
Nondetect data means, for the purposes of this subpart, any value that is below the method detection limit.
Non-HAP coating means a coating with HAP contents below 0.1 percent by mass for Occupational Safety and Health Administration-defined carcinogens as specified in 29 CFR 1910.1200(d)(4), and below 1.0 percent by mass for other HAP compounds.
1-hour period means a 60-minute period.
Oriented strandboard (OSB) means a composite panel produced from thin wood strands cut from whole logs, formed into resinated layers (with the grain of strands in one layer oriented perpendicular to the strands in adjacent layers), and pressed.
Oven-dried ton(s) (ODT) means tons of wood dried until all of the moisture in the wood is removed. One oven-dried ton equals 907 oven-dried kilograms.
Parallel strand lumber (PSL) means a composite product formed into a billet made from layers of resinated wood veneer sheets or pieces pressed together with the grain of each veneer aligned primarily along the length of the finished product. Parallel strand lumber is also known as laminated veneer lumber (LVL).
Partial wood products enclosure means an enclosure that does not meet the design criteria for a wood products enclosure as defined in this subpart.
Particle means a discrete, small piece of cellulosic material (usually wood or agricultural fiber) produced mechanically and used as the aggregate for a particleboard.
Particleboard means a composite panel composed primarily of cellulosic materials (usually wood or agricultural fiber) generally in the form of discrete pieces or particles, as distinguished from fibers, which are pressed together with resin.
Plywood means a panel product consisting of layers of wood veneers hot pressed together with resin. Plywood includes panel products made by hot pressing (with resin) veneers to a substrate such as particleboard, medium density fiberboard, or lumber. Plywood products may be flat or curved.
Plywood and composite wood products (PCWP) manufacturing facility means a facility that manufactures plywood and/or composite wood products by bonding wood material (fibers, particles, strands, veneers, etc.) or agricultural fiber, generally with resin under heat and pressure, to form a panel, engineered wood product, or other product defined in Sec. 63.2292. Plywood and composite wood products manufacturing facilities also include facilities that manufacture dry veneer and lumber kilns located at any facility. Plywood and composite wood products include, but are not limited to, plywood, veneer, particleboard, molded particleboard, oriented strandboard, hardboard, fiberboard, medium density fiberboard, laminated strand lumber, laminated veneer lumber, wood I-joists, kiln-dried lumber, and glue-laminated beams.
Press predryer means a dryer used to reduce the moisture and elevate the temperature by applying heat to a wet-formed fiber mat before the mat enters a hot press. A press predryer is a process unit.
Pressurized refiner means a piece of equipment operated under pressure for preheating (usually by steaming) wood material and refining (rubbing or grinding) the wood material into fibers. Pressurized refiners are operated with continuous infeed and outfeed of wood material and maintain elevated internal pressures (i.e., there is no pressure release) throughout the preheating and refining process. A pressurized refiner is a process unit.
Primary tube dryer means a single-stage tube dryer or the first stage of a multi-stage tube dryer. Tube dryer stages are separated by vents for removal of moist gases between stages (e.g., a product cyclone at the end of a single-stage dryer or between the first and second stages of a multi-stage tube dryer). The first stage of a multi-stage tube dryer is used to remove the majority of the moisture from the wood furnish (compared to the moisture reduction in subsequent stages of the tube dryer). Blow-lines used to apply resin are considered part of the primary tube dryer. A primary tube dryer is a process unit.
Process unit means equipment classified according to its function such as a blender, dryer, press, former, or board cooler.
Reconstituted wood product board cooler means a piece of equipment designed to reduce the temperature of a board by means of forced air or convection within a controlled time period after the board exits the reconstituted wood product press unloader. Board coolers include wicket and star type coolers commonly found at medium density fiberboard and particleboard plants. Board coolers do not include cooling sections of dryers (e.g., veneer dryers or fiberboard mat dryers) or coolers integrated into or following hardboard bake ovens or humidifiers. A reconstituted wood product board cooler is a process unit.
Reconstituted wood product press means a press, including (if applicable) the press unloader, that presses a resinated mat of wood fibers, particles, or strands between hot platens or hot rollers to compact and set the mat into a panel by simultaneous application of heat and pressure. Reconstituted wood product presses are used in the manufacture of hardboard, medium density fiberboard, particleboard, and oriented strandboard. Extruders are not considered to be reconstituted wood product presses. A reconstituted wood product press is a process unit.
Representative operating conditions means operation of a process unit during performance testing under the conditions that the process unit will typically be operating in the future, including use of a representative range of materials (e.g., wood material of a typical species mix and moisture content or typical resin formulation) and representative operating temperature range.
Resin means the synthetic adhesive (including glue) or natural binder, including additives, used to bond wood or other cellulosic materials together to produce plywood and composite wood products.
Responsible official means responsible official as defined in 40 CFR 70.2 and 40 CFR 71.2.
Rotary strand dryer means a rotary dryer operated by applying heat and used to reduce the moisture of wood strands used in the manufacture of oriented strandboard, laminated strand lumber, or other wood strand-based products. A rotary strand dryer is a process unit.
Secondary tube dryer means the second stage and subsequent stages following the primary stage of a multi-stage tube dryer. Secondary tube dryers, also referred to as relay dryers, operate at lower temperatures than the primary tube dryer they follow. Secondary tube dryers are used to remove only a small amount of the furnish moisture compared to the furnish moisture reduction across the primary tube dryer. A secondary tube dryer is a process unit.
Softwood means the wood of a coniferous tree. Examples of softwoods include, but are not limited to, Southern yellow pine, Douglas fir, and White spruce.
Softwood veneer dryer means a dryer that removes excess moisture from veneer by conveying the veneer through a heated medium, generally on rollers, belts, cables, or wire mesh. Softwood veneer dryers are used to dry veneer with greater than or equal to 30 percent softwood species on an annual volume basis. Veneer kilns that operate as batch units, veneer dryers heated by radio frequency or microwaves that are used to redry veneer, and veneer redryers (defined elsewhere in this section) that are heated by conventional means are not considered to be softwood veneer dryers. A softwood veneer dryer is a process unit.
Startup means bringing equipment online and starting the production process.
Startup, initial means the first time equipment is put into operation. Initial startup does not include operation solely for testing equipment. Initial startup does not include subsequent startups (as defined in this section) following malfunction or shutdowns or following changes in product or between batch operations. Initial startup does not include startup of equipment that occurred when the source was an area source.
Startup, shutdown, and malfunction plan (SSMP) means a plan developed according to the provisions of Sec. 63.6(e)(3).
Strand means a long (with respect to thickness and width), flat wood piece specially cut from a log for use in oriented strandboard, laminated strand lumber, or other wood strand-based product.
Temporary total enclosure (TTE) means an enclosure constructed for the purpose of measuring the capture efficiency of pollutants emitted from a given source, as defined in Method 204 of 40 CFR part 51, appendix M.
Thermal oxidizer means a control system that combusts or oxidizes exhaust gas from a process unit. Thermal oxidizers include regenerative thermal oxidizers and combustion units.
Total hazardous air pollutant emissions means, for purposes of this subpart, the sum of the emissions of the following six compounds: acetaldehyde, acrolein, formaldehyde, methanol, phenol, and propionaldehyde.
Tube dryer means a single-stage or multi-stage dryer operated by applying heat to reduce the moisture of wood fibers or particles as they are conveyed (usually pneumatically) through the dryer. Resin may or may not be applied to the wood material before it enters the tube dryer. Tube dryers do not include pneumatic fiber transport systems that use temperature and humidity conditioned pneumatic system supply air in order to prevent cooling of the wood fiber as it is moved through the process. A tube dryer is a process unit.
Veneer means thin sheets of wood peeled or sliced from logs for use in the manufacture of wood products such as plywood, laminated veneer lumber, or other products.
Veneer redryer means a dryer heated by conventional means, such as direct wood-fired, direct-gas-fired, or steam heated, that is used to redry veneer that has been previously dried. Because the veneer dried in a veneer redryer has been previously dried, the inlet moisture content of the veneer entering the redryer is less than 25 percent (by weight, dry basis). Batch units used to redry veneer (such as redry cookers) are not considered to be veneer redryers. A veneer redryer is a process unit.
Wet control device means any equipment that uses water as a means of collecting an air pollutant. Wet control devices include scrubbers, wet electrostatic precipitators, and electrified filter beds. Wet control devices do not include biofilters or other equipment that destroys or degrades HAP.
Wet forming means the process of making a slurry of water, fiber, and additives into a mat of fibers to be compressed into a fiberboard or hardboard product.
Wood I-joists means a structural wood beam with an I-shaped cross section formed by bonding (with resin) wood or laminated veneer lumber flanges onto a web cut from a panel such as plywood or oriented strandboard.
Wood products enclosure means a permanently installed containment that was designed to meet the following physical design criteria:
(1) Any natural draft opening shall be at least four equivalent opening diameters from each HAP-emitting point, except for where board enters and exits the enclosure, unless otherwise specified by the EPA Administrator.
(2) The total area of all natural draft openings shall not exceed 5 percent of the surface area of the enclosure's four walls, floor, and ceiling.
(3) The average facial velocity of air through all natural draft openings shall be at least 3,600 meters per hour (200 feet per minute). The direction of airflow through all natural draft openings shall be into the enclosure.
(4) All access doors and windows whose areas are not included in item 2 of this definition and are not included in the calculation of facial velocity in item 3 of this definition shall be closed during routine operation of the process.
(5) The enclosure is designed and maintained to capture all emissions for discharge through a control device.
Work practice requirement means any design, equipment, work practice, or operational standard, or combination thereof, that is promulgated pursuant to section 112(h) of the CAA. [69 FR 46011, July 30, 2004, as amended at 71 FR 8372, Feb. 16, 2006]
Sec. Table 1A to Subpart DDDD of Part 63--Production-Based Compliance
Options ------------------------------------------------------------------------
You must meet the following
production-based compliance
For the following process units ... option (total HAP \a\ basis)
(1) Fiberboard mat dryer heated zones 0.022 lb/MSF \1/2\.
(at new affected sources only).(2) Green rotary dryers................ 0.058 lb/ODT.(3) Hardboard ovens.................... 0.022 lb/MSF \1/8\.(4) Press predryers (at new affected 0.037 lb/MSF \1/2\.
sources only).(5) Pressurized refiners............... 0.039 lb/ODT.(6) Primary tube dryers................ 0.26 lb/ODT.(7) Reconstituted wood product board 0.014 lb/MSF \3/4\.
coolers (at new affected sources only).(8) Reconstituted wood product presses. 0.30 lb/MSF \3/4\.(9) Softwood veneer dryer heated zones. 0.022 lb/MSF \3/8\.(10) Rotary strand dryers.............. 0.18 lb/ODT.(11) Secondary tube dryers............. 0.010 lb/ODT.------------------------------------------------------------------------\a\ Total HAP, as defined in Sec. 63.2292, includes acetaldehyde,
acrolein, formaldehyde, methanol, phenol, and propionaldehyde. lb/ODT
= pounds per oven-dried ton; lb/MSF = pounds per thousand square feet
with a specified thickness basis (inches). Section 63.2262(j) shows
how to convert from one thickness basis to another.Note: There is no production-based compliance option for conveyor strand
dryers.
Sec. Table 1B to Subpart DDDD of Part 63--Add-on Control Systems
Compliance Options ------------------------------------------------------------------------
You must comply with one of theFor each of the following process units following six compliance
. . . options by using an emissions
control system . . .------------------------------------------------------------------------Fiberboard mat dryer heated zones (at (1) Reduce emissions of total
new affected sources only); green HAP, measured as THC (as
rotary dryers; hardboard ovens; press carbon) \a\, by 90 percent; or
predryers (at new affected sources (2) Limit emissions of total
only); pressurized refiners; primary HAP, measured as THC (as
tube dryers; secondary tube dryers; carbon) \a\, to 20 ppmvd; or
reconstituted wood product board (3) Reduce methanol emissions
coolers (at new affected sources by 90 percent; or
only); reconstituted wood product (4) Limit methanol emissions to
presses; softwood veneer dryer heated less than or equal to 1 ppmvd
zones; rotary strand dryers; conveyor if uncontrolled methanol
strand dryer zone one (at existing emissions entering the control
affected sources); and conveyor strand device are greater than or
dryer zones one and two (at new equal to 10 ppmvd; or
affected sources). (5) Reduce formaldehyde
emissions by 90 percent; or
(6) Limit formaldehyde
emissions to less than or
equal to 1 ppmvd if
uncontrolled formaldehyde
emissions entering the control
device are greater than or
equal to 10 ppmvd.------------------------------------------------------------------------\a\ You may choose to subtract methane from THC as carbon measurements.
Sec. Table 2 to Subpart DDDD of Part 63--Operating Requirements ------------------------------------------------------------------------
(1) Thermal oxidizer............ Maintain the 3- Maintain the 3-
hour block hour block
average firebox average THC
temperature above concentration \a\
the minimum in the thermal
temperature oxidizer exhaust
established below the maximum
during the concentration
performance test. established
during the
performance test.(2) Catalytic oxidizer.......... Maintain the 3- Maintain the 3-
hour block hour block
average catalytic average THC
oxidizer concentration \a\
temperature above in the catalytic
the minimum oxidizer exhaust
temperature below the maximum
established concentration
during the established
performance test; during the
AND check the performance test.
activity level of
a representative
sample of the
catalyst at least
every 12 months.(3) Biofilter................... Maintain the 24- Maintain the 24-
hour block hour block
biofilter bed average THC
temperature concentration \a\
within the range in the biofilter
established exhaust below the
according to Sec. maximum
63.2262(m). concentration
established
during the
performance test.(4) Control device other than a Petition the EPA Maintain the 3-
thermal oxidizer, catalytic Administrator for hour block
oxidizer, or biofilter. site-specific average THC
operating concentration \a\
parameter(s) to in the control
be established device exhaust
during the below the maximum
performance test concentration
and maintain the established
average operating during the
parameter(s) performance test.
within the
range(s)
established
during the
performance test.(5) Process unit that meets a Maintain on a Maintain the 3-
compliance option in Table 1A daily basis the hour block
of this subpart, or a process process unit average THC
unit that generates debits in controlling concentration \a\
an emissions average without operating in the process
the use of a control device. parameter(s) unit exhaust
within the ranges below the maximum
established concentration
during the established
performance test during the
according to Sec. performance test.
63.2262(n).------------------------------------------------------------------------\a\ You may choose to subtract methane from THC measurements.
Sec. Table 3 to Subpart DDDD of Part 63--Work Practice Requirements ------------------------------------------------------------------------For the following process units atexisting or new affected sources . You must . . .
(1) Dry rotary dryers............. Process furnish with a 24-hour block
average inlet moisture content of
less than or equal to 30 percent
(by weight, dry basis); AND operate
with a 24-hour block average inlet
dryer temperature of less than or
equal to 600 [deg]F.(2) Hardwood veneer dryers........ Process less than 30 volume percent
softwood species on an annual
basis.(3) Softwood veneer dryers........ Minimize fugitive emissions from the
dryer doors through (proper
maintenance procedures) and the
green end of the dryers (through
proper balancing of the heated zone
exhausts).(4) Veneer redryers............... Process veneer that has been
previously dried, such that the 24-
hour block average inlet moisture
content of the veneer is less than
or equal to 25 percent (by weight,
dry basis).(5) Group 1 miscellaneous coating Use non-HAP coatings as defined in
operations. Sec. 63.2292.------------------------------------------------------------------------
Sec. Table 4 to Subpart DDDD of Part 63--Requirements for Performance
Tests ------------------------------------------------------------------------
(1) each process unit select sampling Method 1 or 1A of 40
subject to a compliance port's location and CFR part 60,
option in table 1A or 1B to the number of appendix A (as
this subpart or used in traverse ports. appropriate).
calculation of an emissions
average under Sec.
63.2240(c).(2) each process unit determine velocity Method 2 in addition
subject to a compliance and volumetric flow to Method 2A, 2C,
option in table 1A or 1B to rate. 2D, 2F, or 2G in
this subpart or used in appendix A to 40
calculation of an emissions CFR part 60 (as
average under Sec. appropriate).
63.2240(c).(3) each process unit conduct gas Method 3, 3A, or 3B
subject to a compliance molecular weight in appendix A to 40
option in table 1A or 1B to analysis. CFR part 60 (as
this subpart or used in appropriate).
calculation of an emissions
average under Sec.
63.2240(c).(4) each process unit measure moisture Method 4 in appendix
subject to a compliance content of the A to 40 CFR part
option in table 1A or 1B to stack gas. 60; OR Method 320
this subpart or used in in appendix A to 40
calculation of an emissions CFR part 63; OR
average under Sec. ASTM D6348-03 (IBR,
63.2240(c). see Sec.
63.14(b)).(5) each process unit measure emissions of Method 25A in
subject to a compliance total HAP as THC. appendix A to 40
option in table 1B to this CFR part 60. You
subpart for which you may measure
choose to demonstrate emissions of
compliance using a total methane using EPA
HAP as THC compliance Method 18 in
option. appendix A to 40
CFR part 60 and
subtract the
methane emissions
from the emissions
of total HAP as
THC.(6) each process unit measure emissions of Method 320 in
subject to a compliance total HAP (as appendix A to 40
option in table 1A to this defined in Sec. CFR part 63; OR the
subpart; OR for each 63.2292). NCASI Method IM/CAN/
process unit used in WP-99.02 (IBR, see
calculation of an emissions Sec. 63.14(f));
average under Sec. OR the NCASI Method
63.2240(c). ISS/FP-A105.01
(IBR, see Sec.
63.14(f)); OR ASTM
D6348-03 (IBR, see
Sec. 63.14(b))
provided that
percent R as
determined in Annex
A5 of ASTM D6348-03
is equal or greater
than 70 percent and
less than or equal
to 130 percent.(7) each process unit measure emissions of Method 308 in
subject to a compliance methanol. appendix A to 40
option in table 1B to this CFR part 63; OR
subpart for which you Method 320 in
choose to demonstrate appendix A to 40
compliance using a methanol CFR part 63; OR the
compliance option. NCASI Method CI/WP-
98.01 (IBR, see
Sec. 63.14(f));
OR the NCASI Method
IM/CAN/WP-99.02
(IBR, see Sec.
63.14(f)); OR the
NCASI Method ISS/FP-
A105.01 (IBR, see
Sec. 63.14(f)).(8) each process unit measure emissions of Method 316 in
subject to a compliance formaldehyde. appendix A to 40
option in table 1B to this CFR part 63; OR
subpart for which you Method 320 in
choose to demonstrate appendix A to 40
compliance using a CFR part 63; OR
formaldehyde compliance Method 0011 in
option. ``Test Methods for
Evaluating Solid
Waste, Physical/
Chemical Methods''
(EPA Publication
No. SW-846) for
formaldehyde; OR
the NCASI Method CI/
WP-98.01 (IBR, see
Sec. 63.14(f));
OR the NCASI Method
IM/CAN/WP-99.02
(IBR, see Sec.
63.14(f)); OR the
NCASI Method ISS/FP-
A105.01 (IBR, see
Sec. 63.14(f)).
(9) each reconstituted wood meet the design Methods 204 and 204A
product press at a new or specifications through 204F of 40
existing affected source or included in the CFR part 51,
reconstituted wood product definition of wood appendix M, to
board cooler at a new products enclosure determine capture
affected source subject to in Sec. 63.2292; efficiency (except
a compliance option in or for wood products
table 1B to this subpart or determine the enclosures as
used in calculation of an percent capture defined in Sec.
emissions average under efficiency of the 63.2292).
Sec. 63.2240(c). enclosure directing Enclosures that
emissions to an add- meet the definition
on control device. of wood products
enclosure or that
meet Method 204
requirements for a
permanent total
enclosure (PTE) are
assumed to have a
capture efficiency
of 100 percent.
Enclosures that do
not meet either the
PTE requirements or
design criteria for
a wood products
enclosure must
determine the
capture efficiency
by constructing a
TTE according to
the requirements of
Method 204 and
applying Methods
204A through 204F
(as appropriate).
As an alternative
to Methods 204 and
204A through 204F,
you may use the
tracer gas method
contained in
appendix A to this
subpart.(10) each reconstituted wood determine the a TTE and Methods
product press at a new or percent capture 204 and 204A
existing affected source or efficiency. through 204F (as
reconstituted wood product appropriate) of 40
board cooler at a new CFR part 51,
affected source subject to appendix M. As an
a compliance option in alternative to
table 1A to this subpart. installing a TTE
and using Methods
204 and 204A
through 204F, you
may use the tracer
gas method
contained in
appendix A to this
subpart. Enclosures
that meet the
design criteria (1)
through (4) in the
definition of wood
products enclosure,
or that meet Method
204 requirements
for a PTE (except
for the criteria
specified in
section 6.2 of
Method 204) are
assumed to have a
capture efficiency
of 100 percent.
Measured emissions
divided by the
capture efficiency
provides the
emission rate.(11) each process unit establish the site- data from the
subject to a compliance specific operating parameter
option in tables 1A and 1B requirements monitoring system
to this subpart or used in (including the or THC CEMS and the
calculation of an emissions parameter limits or applicable
average under Sec. THC concentration performance test
63.2240(c). limits) in table 2 method(s).
to this subpart.------------------------------------------------------------------------ [71 FR 8373, Feb. 16, 2006] Sec. Table 5 to Subpart DDDD of Part 63--Performance Testing and Initial
Compliance Demonstrations for the Compliance Options and Operating
Requirements ------------------------------------------------------------------------
For the following You have
compliance options demonstrated
For each . . . and operating initial compliance
(1) Process unit listed in Table Meet the The average total
1A to this subpart. production-based HAP emissions
compliance measured using
options listed in the methods in
Table 1A to this Table 4 to this
subpart. subpart over the
3-hour
performance test
are no greater
than the
compliance option
in Table 1A to
this subpart; AND
you have a record
of the operating
requirement(s)
listed in Table 2
to this subpart
for the process
unit over the
performance test
during which
emissions did not
exceed the
compliance option
value.
(2) Process unit listed in Table Reduce emissions Total HAP
1B to this subpart. of total HAP, emissions,
measured as THC, measured using
by 90 percent. the methods in
Table 4 to this
subpart over the
3-hour
performance test,
are reduced by at
least 90 percent,
as calculated
using the
procedures in
Sec. 63.2262;
AND you have a
record of the
operating
requirement(s)
listed in Table 2
to this subpart
for the process
unit over the
performance test
during which
emissions were
reduced by at
least 90 percent.(3) Process unit listed in Table Limit emissions of The average total
1B to this subpart. total HAP, HAP emissions,
measured as THC, measured using
to 20 ppmvd. the methods in
Table 4 to this
subpart over the
3-hour
performance test,
do not exceed 20
ppmvd; AND you
have a record of
the operating
requirement(s)
listed in Table 2
to this subpart
for the process
unit over the
performance test
during which
emissions did not
exceed 20 ppmvd.(4) Process unit listed in Table Reduce methanol or The methanol or
1B to this subpart. formaldehyde formaldehyde
emissions by 90 emissions
percent. measured using
the methods in
Table 4 to this
subpart over the
3-hour
performance test,
are reduced by at
least 90 percent,
as calculated
using the
procedures in
Sec. 63.2262;
AND you have a
record of the
operating
requirement(s)
listed in Table 2
to this subpart
for the process
unit over the
performance test
during which
emissions were
reduced by at
least 90 percent.(5) Process unit listed in Table Limit methanol or The average
1B to this subpart. formaldehyde methanol or
emissions to less formaldehyde
than or equal to emissions,
1 ppmvd (if measured using
uncontrolled the methods in
emissions are Table 4 to this
greater than or subpart over the
equal to 10 3-hour
ppmvd). performance test,
do not exceed 1
ppmvd; AND you
have a record of
the operating
requirement(s)
listed in Table 2
to this subpart
for the process
unit over the
performance test
during which
emissions did not
exceed 1 ppmvd.
If the process
unit is a
reconstituted
wood product
press or a
reconstituted
wood product
board cooler,
your capture
device either
meets the EPA
Method 204
criteria for a
PTE or achieves a
capture
efficiency of
greater than or
equal to 95
percent.(6) Reconstituted wood product Compliance options You submit the
press at a new or existing in Tables 1A and results of
affected source, or 1B to this capture
reconstituted wood product subpart or the efficiency
board cooler at a new affected emissions verification
source. averaging using the methods
compliance option in Table 4 to
in Sec. this subpart with
63.2240(c). your Notification
of Compliance
Status.(7) Process unit listed in Table Compliance options You submit with
1B to this subpart controlled in Table 1B to your Notification
by routing exhaust to a this subpart or of Compliance
combustion unit. the emissions Status
averaging documentation
compliance option showing that the
in Sec. process exhausts
63.2240(c). controlled enter
into the flame
zone of your
combustion unit.(8) Process unit listed in Table Compliance options You submit with
1B to this subpart using a wet in Table 1B to your Notification
control device as the sole this subpart or of Compliance
means of reducing HAP emissions. the emissions Status your plan
averaging to address how
compliance option organic HAP
in Sec. captured in the
63.2240(c). wastewater from
the wet control
device is
contained or
destroyed to
minimize re-
release to the
atmosphere.------------------------------------------------------------------------
Sec. Table 6 to Subpart DDDD of Part 63--Initial Compliance
Demonstrations for Work Practice Requirements ------------------------------------------------------------------------
You have
For the following demonstrated
For each . . . work practice initial compliance
(1) Dry rotary dryer............ Process furnish You meet the work
with an inlet practice
moisture content requirement AND
less than or you submit a
equal to 30 signed statement
percent (by with the
weight, dry Notification of
basis) AND Compliance Status
operate with an that the dryer
inlet dryer meets the
temperature of criteria of a
less than or ``dry rotary
equal to 600 dryer'' AND you
[deg]F. have a record of
the inlet
moisture content
and inlet dryer
temperature (as
required in Sec.
63.2263).(2) Hardwood veneer dryer....... Process less than You meet the work
30 volume percent practice
softwood species. requirement AND
you submit a
signed statement
with the
Notification of
Compliance Status
that the dryer
meets the
criteria of a
``hardwood veneer
dryer'' AND you
have a record of
the percentage of
softwoods
processed in the
dryer (as
required in Sec.
63.2264).(3) Softwood veneer dryer....... Minimize fugitive You meet the work
emissions from practice
the dryer doors requirement AND
and the green end. you submit with
the Notification
of Compliance
Status a copy of
your plan for
minimizing
fugitive
emissions from
the veneer dryer
heated zones (as
required in Sec.
63.2265).(4) Veneer redryers............. Process veneer You meet the work
with an inlet practice
moisture content requirement AND
of less than or you submit a
equal to 25 signed statement
percent (by with the
weight, dry Notification of
basis). Compliance Status
that the dryer
operates only as
a redryer AND you
have a record of
the veneer inlet
moisture content
of the veneer
processed in the
redryer (as
required in Sec.
63.2266).(5) Group 1 miscellaneous Use non-HAP You meet the work
coating operations. coatings as practice
defined in Sec. requirement AND
63.2292. you submit a
signed statement
with the
Notification of
Compliance Status
that you are
using non-HAP
coatings AND you
have a record
showing that you
are using non-HAP
coatings.------------------------------------------------------------------------ Sec. Table 7 to Subpart DDDD of Part 63--Continuous Compliance With the
Compliance Options and Operating Requirements ------------------------------------------------------------------------
You must
For the following demonstrate
For . . . compliance options continuous
and operating compliance by . .
(1) Each process unit listed in Compliance options Collecting and
Table 1B to this subpart or in Table 1B to recording the
used in calculation of an this subpart or operating
emissions average under Sec. the emissions parameter
63.2240(c). averaging monitoring system
compliance option data listed in
in Sec. Table 2 to this
63.2240(c) and subpart for the
the operating process unit
requirements in according to Sec.
Table 2 to this 63.2269(a)
subpart based on through (b) and
monitoring of Sec. 63.2270;
operating AND reducing the
parameters. operating
parameter
monitoring system
data to the
specified
averages in units
of the applicable
requirement
according to
calculations in
Sec. 63.2270;
AND maintaining
the average
operating
parameter at or
above the
minimum, at or
below the
maximum, or
within the range
(whichever
applies)
established
according to Sec.
63.2262.
(2) Each process unit listed in Compliance options Collecting and
Tables 1A and 1B to this in Tables 1A and recording the THC
subpart or used in calculation 1B to this monitoring data
of an emissions average under subpart or the listed in Table 2
Sec. 63.2240(c). emissions to this subpart
averaging for the process
compliance option unit according to
in Sec. Sec.
63.2240(c) and 63.2269(d); AND
the operating reducing the CEMS
requirements in data to 3-hour
Table 2 of this block averages
subpart based on according to
THC CEMS data. calculations in
Sec.
63.2269(d); AND
maintaining the 3-
hour block
average THC
concentration in
the exhaust gases
less than or
equal to the THC
concentration
established
according to Sec.
63.2262.(3) Each process unit using a Compliance options Conducting a
biofilter. in Tables 1B to repeat
this subpart or performance test
the emissions using the
averaging applicable
compliance option method(s)
in Sec. specified in
63.2240(c). Table 4 to this
subpart within 2
years following
the previous
performance test
and within 180
days after each
replacement of
any portion of
the biofilter bed
media with a
different type of
media or each
replacement of
more than 50
percent (by
volume) of the
biofilter bed
media with the
same type of
media.(4) Each process unit using a Compliance options Checking the
catalytic oxidizer. in Table 1B to activity level of
this subpart or a representative
the emissions sample of the
averaging catalyst at least
compliance option every 12 months
in Sec. and taking any
63.2240(c). necessary
corrective action
to ensure that
the catalyst is
performing within
its design range.(5) Each process unit listed in Compliance options Collecting and
Table 1A to this subpart, or in Table 1A to recording on a
each process unit without a this subpart or daily basis
control device used in the emissions process unit
calculation of an emissions averaging controlling
averaging debit under Sec. compliance option operating
63.2240(c). in Sec. parameter data;
63.2240(c) and AND maintaining
the operating the operating
requirements in parameter at or
Table 2 to this above the
subpart based on minimum, at or
monitoring of below the
process unit maximum, or
controlling within the range
operating (whichever
parameters. applies)
established
according to Sec.
63.2262.(6) Each Process unit listed in Compliance options Implementing your
Table 1B to this subpart using in Table 1B to plan to address
a wet control device as the this subpart or how organic HAP
sole means of reducing HAP the emissions captured in the
emissions. averaging wastewater from
compliance option the wet control
in Sec. device is
63.2240(c). contained or
destroyed to
minimize re-
release to the
atmosphere.------------------------------------------------------------------------ Sec. Table 8 to Subpart DDDD of Part 63--Continuous Compliance With the
Work Practice Requirements ------------------------------------------------------------------------
You must
For the following demonstrate
For . . . work practice continuous
requirements . . . compliance by . .
(1) Dry rotary dryer............ Process furnish Maintaining the 24-
with an inlet hour block
moisture content average inlet
less than or furnish moisture
equal to 30 content at less
percent (by than or equal to
weight, dry 30 percent (by
basis) AND weight, dry
operate with an basis) AND
inlet dryer maintaining the
temperature of 24-hour block
less than or average inlet
equal to 600 dryer temperature
[deg]F. at less than or
equal to 600
[deg]F; AND
keeping records
of the inlet
temperature of
furnish moisture
content and inlet
dryer
temperature.(2) Hardwood veneer dryer....... Process less than Maintaining the
30 volume percent volume percent
softwood species. softwood species
processed below
30 percent AND
keeping records
of the volume
percent softwood
species
processed.(3) Softwood veneer dryer....... Minimize fugitive Following (and
emissions from documenting that
the dryer doors you are
and the green end. following) your
plan for
minimizing
fugitive
emissions.(4) Veneer redryers............. Process veneer Maintaining the 24-
with an inlet hour block
moisture content average inlet
of less than or moisture content
equal to 25 of the veneer
percent (by processed at or
weight, dry below of less
basis). than or 25
percent AND
keeping records
of the inlet
moisture content
of the veneer
processed.
(5) Group 1 miscellaneous Use non-HAP Continuing to use
coating operations. coatings as non-HAP coatings
defined in Sec. AND keeping
63.2292. records showing
that you are
using non-HAP
coatings.------------------------------------------------------------------------
Sec. Table 9 to Subpart DDDD of Part 63--Requirements for Reports ------------------------------------------------------------------------
The report must You must submit
(1) Compliance report........... The information in Semiannually
Sec. 63.2281(c) according to the
through (g). requirements in
Sec.
(i) Actions taken By fax or
and malfunction report if you for the event. telephone within
had a startup, shutdown, or 2 working days
malfunction during the after starting
reporting period that is not actions
consistent with your SSMP. inconsistent with
the plan.
(ii) The By letter within 7
information in working days
Sec. after the end of
63.10(d)(5)(ii). the event unless
you have made
alternative
arrangements with
the permitting
authority.------------------------------------------------------------------------
Sec. Table 10 to Subpart DDDD of Part 63--Applicability of General
Provisions to Subpart DDDD ----------------------------------------------------------------------------------------------------------------
Citation Subject Brief description Applies to subpart DDDD----------------------------------------------------------------------------------------------------------------Sec. 63.1......................... Applicability.......... Initial applicability Yes.
determination;
applicability after
standard established;
permit requirements;
extensions,
notifications.Sec. 63.2......................... Definitions............ Definitions for part Yes.
63 standards.Sec. 63.3......................... Units and Abbreviations Units and Yes.
abbreviations for
part 63 standards.Sec. 63.4......................... Prohibited Activities.. Prohibited activities; Yes.
compliance date;
circumvention,
fragmentation.Sec. 63.5......................... Construction/ Applicability; Yes.
Reconstruction. applications;
approvals.Sec. 63.6(a)...................... Applicability.......... GP apply unless Yes.
compliance extension;
GP apply to area
sources that become
major.Sec. 63.6(b)(1)-(4)............... Compliance Dates for Standards apply at Yes.
New and Reconstructed effective date; 3
Sources. years after effective
date; upon startup;
10 years after
construction or
reconstruction
commences for section
112(f).Sec. 63.6(b)(5)................... Notification........... Must notify if Yes.
commenced
construction or
reconstruction after
proposal.Sec. 63.6(b)(6)................... [Reserved].............Sec. 63.6(b)(7)................... Compliance Dates for Area sources that Yes.
New and Reconstructed become major must
Area Sources that comply with major
Become Major. source standards
immediately upon
becoming major,
regardless of whether
required to comply
when they were an
area source.Sec. 63.6(c)(1)-(2)............... Compliance Dates for Comply according to Yes.
Existing Sources. date in subpart,
which must be no
later than 3 years
after effective date;
for section 112(f)
standards, comply
within 90 days of
effective date unless
compliance extension.Sec. 63.6(c)(3)-(4)............... [Reserved].............Sec. 63.6(c)(5)................... Compliance Dates for Area sources that Yes.
Existing Area Sources become major must
that Become Major. comply with major
source standards by
date indicated in
subpart or by
equivalent time
period (e.g., 3
years).Sec. 63.6(d)...................... [Reserved].............
Sec. 63.6(e)(1)-(2)............... Operation & Maintenance Operate to minimize Yes.
emissions at all
times; correct
malfunctions as soon
as practicable;
operation and
maintenance
requirements
independently
enforceable;
information
Administrator will
use to determine if
operation and
maintenance
requirements were met.Sec. 63.6(e)(3)................... Startup, Shutdown, and Requirement for SSM Yes.
Malfunction Plan and SSMP; content of
(SSMP). SSMP.Sec. 63.6(f)(1)................... Compliance Except You must comply with Yes.
During SSM. emission standards at
all times except
during SSM.Sec. 63.6(f)(2)-(3)............... Methods for Determining Compliance based on Yes.
Compliance. performance test,
operation and
maintenance plans,
records, inspection.Sec. 63.6(g)(1)-(3)............... Alternative Standard... Procedures for getting Yes.
an alternative
standard.Sec. 63.6(h)(1)-(9)............... Opacity/Visible Requirements for NA.
Emission (VE) opacity and visible
Standards. emission standards.Sec. 63.6(i)(1)-(14).............. Compliance Extension... Procedures and Yes.
criteria for
Administrator to
grant compliance
extension.Sec. 63.6(i)(15).................. [Reserved].............Sec. 63.6(i)(16).................. Compliance Extension... Compliance extension Yes.
and Administrator's
authority.Sec. 63.6(j)...................... Presidential Compliance President may exempt Yes.
Exemption. source category from
requirement to comply
with rule.Sec. 63.7(a)(1)-(2)............... Performance Test Dates. Dates for conducting Yes.
initial performance
testing and other
compliance
demonstrations; must
conduct 180 days
after first subject
to rule.Sec. 63.7(a)(3)................... Section 114 Authority.. Administrator may Yes.
require a performance
test under CAA
section 114 at any
time.Sec. 63.7(b)(1)................... Notification of Must notify Yes.
Performance Test. Administrator 60 days
before the test.Sec. 63.7(b)(2)................... Notification of If have to reschedule Yes.
Rescheduling. performance test,
must notify
Administrator as soon
as practicable.Sec. 63.7(c)...................... Quality Assurance/Test Requirement to submit Yes.
Plan. site-specific test
plan 60 days before
the test or on date
Administrator agrees
with; test plan
approval procedures;
performance audit
requirements;
internal and external
QA procedures for
testing.Sec. 63.7(d)...................... Testing Facilities..... Requirements for Yes.
testing facilities.Sec. 63.7(e)(1)................... Conditions for Performance tests must Yes.
Conducting Performance be conducted under
Tests. representative
conditions; cannot
conduct performance
tests during SSM; not
a violation to exceed
standard during SSM.Sec. 63.7(e)(2)................... Conditions for Must conduct according Yes.
Conducting Performance to rule and EPA test
Tests. methods unless
Administrator
approves alternative.Sec. 63.7(e)(3)................... Test Run Duration...... Must have three test Yes.
runs for at least the
time specified in the
relevant standard;
compliance is based
on arithmetic mean of
three runs; specifies
conditions when data
from an additional
test run can be used.Sec. 63.7(f)...................... Alternative Test Method Procedures by which Yes.
Administrator can
grant approval to use
an alternative test
method.
Sec. 63.7(g)...................... Performance Test Data Must include raw data Yes.
Analysis. in performance test
report; must submit
performance test data
60 days after end of
test with the
notification of
compliance status;
keep data for 5 years.Sec. 63.7(h)...................... Waiver of Tests........ Procedures for Yes.
Administrator to
waive performance
test.Sec. 63.8(a)(1)................... Applicability of Subject to all Yes.
Monitoring monitoring
Requirements. requirements in
standard.Sec. 63.8(a)(2)................... Performance Performance Yes.
Specifications. specifications in
appendix B of part 60
apply.Sec. 63.8(a)(3)................... [Reserved].............Sec. 63.8(a)(4)................... Monitoring with Flares. Requirements for NA.
flares in Sec.
63.11 apply.Sec. 63.8(b)(1)................... Monitoring............. Must conduct Yes.
monitoring according
to standard unless
Administrator
approves alternative.Sec. 63.8(b)(2)-(3)............... Multiple Effluents and Specific requirements Yes.
Multiple Monitoring for installing
Systems. monitoring systems;
must install on each
effluent before it is
combined and before
it is released to the
atmosphere unless
Administrator
approves otherwise;
if more than one
monitoring system on
an emission point,
must report all
monitoring system
results, unless one
monitoring system is
a backup.Sec. 63.8(c)(1)................... Monitoring System Maintain monitoring Yes.
Operation and system in a manner
Maintenance. consistent with and
good air pollution
control practices.Sec. 63.8(c)(1)(i)................ Operation and Must maintain and Yes.
Maintenance of CMS. operate CMS in
accordance with Sec.
63.6(e)(1).Sec. 63.8(c)(1)(ii)............... Spare Parts for CMS.... Must maintain spare Yes.
parts for routine CMS
repairs.Sec. 63.8(c)(1)(iii).............. SSMP for CMS........... Must develop and Yes.
implement SSMP for
CMS.Sec. 63.8(c)(2)-(3)............... Monitoring System Must install to get Yes.
Installation. representative
emission of parameter
measurements; must
verify operational
status before or at
performance test.Sec. 63.8(c)(4)................... Continuous Monitoring CMS must be operating Yes.
System (CMS) except during
Requirements. breakdown, out-of-
control, repair,
maintenance, and high-
level calibration
drifts; COMS must
have a minimum of one
cycle of sampling and
analysis for each
successive 10-second
period and one cycle
of data recording for
each successive 6-
minute period; CEMS
must have a minimum
of one cycle of
operation for each
successive 15-minute
period.Sec. 63.8(c)(5)................... Continuous Opacity COMS minimum NA.
Monitoring System procedures.
(COMS) Minimum
Procedures.Sec. 63.8(c)(6)-(8)............... CMS Requirements....... Zero and high-level Yes.
calibration check
requirements; out-of-
control periods.Sec. 63.8(d)...................... CMS Quality Control.... Requirements for CMS Yes.
quality control,
including
calibration, etc.;
must keep quality
control plan on
record for 5 years.
Keep old versions for
5 years after
revisions.Sec. 63.8(e)...................... CMS Performance Notification, Yes.
Evaluation. performance
evaluation test plan,
reports.
Sec. 63.8(f)(1)-(5)............... Alternative Monitoring Procedures for Yes.
Method. Administrator to
approve alternative
monitoring.Sec. 63.8(f)(6)................... Alternative to Relative Procedures for Yes.
Accuracy Test. Administrator to
approve alternative
relative accuracy
tests for CEMS.Sec. 63.8(g)...................... Data Reduction......... COMS 6-minute averages Yes.
calculated over at
least 36 evenly
spaced data points;
CEMS 1 hour averages
computed over at
least 4 equally
spaced data points;
data that can't be
used in average;
rounding of data.Sec. 63.9(a)...................... Notification Applicability and Yes.
Requirements. State delegation.Sec. 63.9(b)(1)-(2)............... Initial Notifications.. Submit notification Yes.
120 days after
effective date;
contents of
notification.Sec. 63.9(b)(3)................... [Reserved].............Sec. 63.9(b)(4)-(5)............... Initial Notifications.. Submit notification Yes.
120 days after
effective date;
notification of
intent to construct/
reconstruct;
notification of
commencement of
construct/
reconstruct;
notification of
startup; contents of
each.Sec. 63.9(c)...................... Request for Compliance Can request if cannot Yes.
Extension. comply by date or if
installed best
available control
technology/lowest
achievable emission
rate.Sec. 63.9(d)...................... Notification of Special For sources that Yes.
Compliance commence construction
Requirements for New between proposal and
Source. promulgation and want
to comply 3 years
after effective date.Sec. 63.9(e)...................... Notification of Notify EPA Yes.
Performance Test. Administrator 60 days
prior.Sec. 63.9(f)...................... Notification of Visible Notify EPA No.
Emissions/Opacity Test. Administrator 30 days
prior.Sec. 63.9(g)...................... Additional Notification of Yes.
Notifications When performance
Using CMS. evaluation;
notification using
COMS data;
notification that
exceeded criterion
for relative accuracy.Sec. 63.9(h)(1)-(6)............... Notification of Contents; due 60 days Yes.
Compliance Status. after end of
performance test or
other compliance
demonstration, except
for opacity/VE, which
are due 30 days
after; when to submit
to Federal vs. State
authority.Sec. 63.9(i)...................... Adjustment of Submittal Procedures for Yes.
Deadlines. Administrator to
approve change in
when notifications
must be submitted.Sec. 63.9(j)...................... Change in Previous Must submit within 15 Yes.
Information. days after the change.Sec. 63.10(a)..................... Recordkeeping/Reporting Applies to all, unless Yes.
compliance extension;
when to submit to
Federal vs. State
authority; procedures
for owners of more
than one source.Sec. 63.10(b)(1).................. Recordkeeping/Reporting General Requirements; Yes.
keep all records
readily available;
keep for 5 years.Sec. 63.10(b)(2)(i)-(iv).......... Records Related to Occurrence of each of Yes.
Startup, Shutdown, and operation (process
Malfunction. equipment);
occurrence of each
malfunction of air
pollution equipment;
maintenance on air
pollution control
equipment; actions
during startup,
shutdown, and
malfunction.Sec. 63.10(b)(2)(vi) and (x)-(xi). CMS Records............ Malfunctions, Yes.
inoperative, out-of-
control.
Sec. 63.10(b)(2)(vii)-(ix)........ Records................ Measurements to Yes.
demonstrate
compliance with
compliance options
and operating
requirements;
performance test,
performance
evaluation, and
visible emission
observation results;
measurements to
determine conditions
of performance tests
and performance
evaluations.Sec. 63.10(b)(2)(xii)............. Records................ Records when under Yes.
waiver.Sec. 63.10(b)(2)(xiii)............ Records................ Records when using Yes.
alternative to
relative accuracy
test.Sec. 63.10(b)(2)(xiv)............. Records................ All documentation Yes.
supporting initial
notification and
notification of
compliance status.Sec. 63.10(b)(3).................. Records................ Applicability Yes.
determinations.Sec. 63.10(c)(1)-(6), (9)-(15).... Records................ Additional records for Yes.
CMS.Sec. 63.10(c)(7)-(8).............. Records................ Records of excess No.
emissions and
parameter monitoring
exceedances for CMS.Sec. 63.10(d)(1).................. General Reporting Requirement to report. Yes.
Requirements.Sec. 63.10(d)(2).................. Report of Performance When to submit to Yes.
Test Results. Federal or State
authority.Sec. 63.10(d)(3).................. Reporting Opacity or VE What to report and NA.
Observations. when.Sec. 63.10(d)(4).................. Progress Reports....... Must submit progress Yes.
reports on schedule
if under compliance
extension.Sec. 63.10(d)(5).................. Startup, Shutdown, and Contents and Yes.
Malfunction Reports. submission.Sec. 63.10(e)(1)-(2).............. Additional CMS Reports. Must report results Yes.
for each CEM on a
unit; written copy of
performance
evaluation; 3 copies
of COMS performance
evaluation.Sec. 63.10(e)(3).................. Reports................ Excess emission No.
reports.Sec. 63.10(e)(4).................. Reporting COMS data.... Must submit COMS data NA.
with performance test
data.Sec. 63.10(f)..................... Waiver for Procedures for EPA Yes.
Recordkeeping/ Administrator to
Reporting. waive.Sec. 63.11........................ Flares................. Requirements for NA.
flares.Sec. 63.12........................ Delegation............. State authority to Yes.
enforce standards.Sec. 63.13........................ Addresses.............. Addresses where Yes.
reports,
notifications, and
requests are send.Sec. 63.14........................ Incorporation by Test methods Yes.
Reference. incorporated by
reference.Sec. 63.15........................ Availability of Public and Yes.
Information. confidential
information.----------------------------------------------------------------------------------------------------------------
Sec. Appendix A to Subpart DDDD of Part 63--Alternative Procedure To
Determine Capture Efficiency From Enclosures Around Hot Presses in the
Plywood and Composite Wood Products Industry Using Sulfur Hexafluoride
Tracer Gas
1.0 Scope and Application
This procedure has been developed specifically for the rule for the plywood and composite wood products (PCWP) industry and is used to determine the capture efficiency of a partial hot press enclosure in that industry. This procedure is applicable for the determination of capture efficiency for enclosures around hot presses and is an alternative to the construction of temporary total enclosures (TTE). Sulfur hexafluoride (SF6) is used as a tracer gas (other tracer gases may be used if approved by the EPA Administrator). This gas is not indigenous to the ambient atmosphere and is nonreactive.
This procedure uses infrared spectrometry (IR) as the analytical technique. When the infrared spectrometer used is a Fourier-Transform Infrared spectrometer (FTIR), an alternate instrument calibration procedure may be used; the alternate calibration procedure is the calibration transfer standard (CTS) procedure of EPA Method 320 (appendix A to 40 CFR part 63). Other analytical techniques which are capable of equivalent Method Performance (Section 13.0) also may be used. Specifically, gas chromatography with electron capture detection (GC/ECD) is an applicable technique for analysis of SF6.
2.0 Summary of Method
A constant mass flow rate of SF6 tracer gas is released through manifolds at multiple locations within the enclosure to mimic the release of hazardous air pollutants during the press process. This test method requires a minimum of three SF6 injection points (two at the press unloader and one at the press) and provides details about considerations for locating the injection points. A GC/ECD is used to measure the concentration of SF6 at the inlet duct to the control device (outlet duct from enclosure). Simultaneously, EPA Method 2 (appendix A to 40 CFR part 60) is used to measure the flow rate at the inlet duct to the control device. The concentration and flow rate measurements are used to calculate the mass emission rate of SF6 at the control device inlet. Through calculation of the mass of SF6 released through the manifolds and the mass of SF6 measured at the inlet to the control device, the capture efficiency of the enclosure is calculated.
In addition, optional samples of the ambient air may be taken at locations around the perimeter of the enclosure to quantify the ambient concentration of SF6 and to identify those areas of the enclosure that may be performing less efficiently; these samples would be taken using disposable syringes and would be analyzed using a GC/ECD.
Finally, in addition to the requirements specified in this procedure, the data quality objectives (DQO) or lower confidence limit (LCL) criteria specified in appendix A to 40 CFR part 63, subpart KK, Data Quality Objective and Lower Confidence Limit Approaches for Alternative Capture Efficiency Protocols and Test Methods, must also be satisfied. A minimum of three test runs are required for this procedure; however, additional test runs may be required based on the results of the DQO or LCL analysis.
3.0 Definitions
3.1 Capture efficiency (CE). The weight per unit time of SF6 entering the control device divided by the weight per unit time of SF6 released through manifolds at multiple locations within the enclosure.
3.2 Control device (CD). The equipment used to reduce, by destruction or removal, press exhaust air pollutants prior to discharge to the ambient air.
3.3 Control/destruction efficiency (DE). The volatile organic compound or HAP removal efficiency of the control device.
3.4 Data Quality Objective (DQO) Approach. A statistical procedure to determine the precision of the data from a test series and to qualify the data in the determination of capture efficiency for compliance purposes. If the results of the DQO analysis of the initial three test runs do not satisfy the DQO criterion, the LCL approach can be used or additional test runs must be conducted. If additional test runs are conducted, then the DQO or LCL analysis is conducted using the data from both the initial test runs and all additional test runs.
3.5 Lower Confidence Limit (LCL) Approach. An alternative statistical procedure that can be used to qualify data in the determination of capture efficiency for compliance purposes. If the results of the LCL approach produce a CE that is too low for demonstrating compliance, then additional test runs must be conducted until the LCL or DQO is met. As with the DQO, data from all valid test runs must be used in the calculation.
3.6 Minimum Measurement Level (MML). The minimum tracer gas concentration expected to be measured during the test series. This value is selected by the tester based on the capabilities of the IR spectrometer (or GC/ECD) and the other known or measured parameters of the hot press enclosure to be tested. The selected MML must be above the low-level calibration standard and preferably below the mid-level calibration standard.
3.7 Method 204. The U.S. EPA Method 204, ``Criteria For and Verification of a Permanent or Temporary Total Enclosure'' (40 CFR part 51, appendix M).
3.8 Method 205. The U.S. EPA Method 205, ``Verification of Gas Dilution Systems for Field Instrument Calibrations'' (40 CFR part 51, appendix M).
3.9 Method 320. The U.S. EPA Method 320, ``Measurement of Vapor Phase Organic and Inorganic Emissions by Extractive Fourier Transform Infrared (FTIR) Spectroscopy'' (40 CFR part 63, appendix A).
3.10 Overall capture and control efficiency (CCE). The collection and control/destruction efficiency of both the PPE and CD combined. The CCE is calculated as the product of the CE and DE.
3.11 Partial press enclosure (PPE). The physical barrier that ``partially'' encloses the press equipment, captures a significant amount of the associated emissions, and transports those emissions to the CD.
3.12 Test series. A minimum of three test runs or, when more than three runs are conducted, all of the test runs conducted.
4.0 Interferences
There are no known interferences.
5.0 Safety
Sulfur hexafluoride is a colorless, odorless, nonflammable liquefied gas. It is stable and nonreactive and, because it is noncorrosive, most structural materials are compatible with it. The Occupational Safety and Health Administration Permissible Emission Limit-Time Weighted Average (PEL-TWA) and Threshold Limit Value-Time Weighted Average (TLV-TWA) concentrations are 1,000 parts per million. Sulfur hexafluoride is an asphyxiant. Exposure to an oxygen-deficient atmosphere (less than 19.5 percent oxygen) may cause dizziness, drowsiness, nausea, vomiting, excess salivation, diminished mental alertness, loss of consciousness, and death. Exposure to atmospheres containing less than 12 percent oxygen will bring about unconsciousness without warning and so quickly that the individuals cannot help themselves. Contact with liquid or cold vapor may cause frostbite. Avoid breathing sulfur hexafluoride gas. Self-contained breathing apparatus may be required by rescue workers. Sulfur hexafluoride is not listed as a carcinogen or a potential carcinogen.
6.0 Equipment and Supplies
This method requires equipment and supplies for: (a) the injection of tracer gas into the enclosure, (b) the measurement of the tracer gas concentration in the exhaust gas entering the control device, and (c) the measurement of the volumetric flow rate of the exhaust gas entering the control device. In addition, the requisite equipment needed for EPA Methods 1-4 in appendix A to 40 CFR part 60 will be required. Equipment and supplies for optional ambient air sampling are discussed in Section 8.6.
6.1 Tracer Gas Injection.
6.1.1 Manifolds. This method requires the use of tracer gas supply cylinder(s) along with the appropriate flow control elements. Figure 1 shows a schematic drawing of the injection system showing potential locations for the tracer gas manifolds. Figure 2 shows a schematic drawing of the recommended configuration of the injection manifold. Three tracer gas discharge manifolds are required at a minimum.
6.1.2 Flow Control Meter. Flow control and measurement meter for measuring the quantity of tracer gas injected. A mass flow, volumetric flow, or critical orifice control meter can be used for this method. The meter must be accurate to within 5 percent at the flow rate used. This means that the flow meter must be calibrated against a primary standard for flow measurement at the appropriate flow rate.
6.2 Measurement of Tracer Gas Concentration.
6.2.1 Sampling Probes. Use Pyrex or stainless steel sampling probes of sufficient length to reach the traverse points calculated according to EPA Method 1 (appendix A to 40 CFR part 60).
6.2.2 Sampling Line. Use a heated Teflon sampling line to transport the sample to the analytical instrument.
6.2.3 Sampling Pump. Use a sampling pump capable of extracting sufficient sample from the duct and transporting to the analytical instrument.
6.2.4 Sample Conditioning System. Use a particulate filter sufficient to protect the sampling pump and analytical instrument. At the discretion of the tester and depending on the equipment used and the moisture content of the exhaust gas, it may be necessary to further condition the sample by removing moisture using a condenser.
6.2.5 Analytical Instrument. Use one of the following analytical instruments.
6.2.5.1 Spectrometer. Use an infrared spectrometer designed to measuring SF6 tracer gas and capable of meeting or exceeding the specifications of this procedure. An FTIR meeting the specifications of Method 320 in appendix A to 40 CFR part 63 may be used.
6.2.5.2 GC/ECD. Use a GC/ECD designed to measure SF6 tracer gas and capable of meeting or exceeding the specifications of this procedure.
6.2.6 Recorder. At a minimum, use a recorder with linear strip chart. An automated data acquisition system (DAS) is recommended.
6.3 Exhaust Gas Flow Rate Measurement. Use equipment specified for EPA Methods 2, 3, and 4 in appendix A to 40 CFR part 60 for measuring flow rate of exhaust gas at the inlet to the control device.
7.0 Reagents and Standards
7.1 Tracer Gas. Use SF6 as the tracer gas. The manufacturer of the SF6 tracer gas should provide a recommended shelf life for the tracer gas cylinder over which the concentration does not change more than 2 percent from the certified value. A gas mixture of SF6 diluted with nitrogen should be used; based on experience and calculations, pure SF6 gas is not necessary to conduct tracer gas testing. Select a concentration and flow rate that is appropriate for the analytical instrument's detection limit, the MML, and the exhaust gas flow rate from the enclosure (see section 8.1.1). You may use a tracer gas other than SF6 with the prior approval of the EPA Administrator. If you use an approved tracer gas other than SF6, all references to SF6 in this protocol instead refer to the approved tracer gas.
7.2 Calibration Gases. The SF6 calibration gases required will be dependent on the selected MML and the appropriate span selected for the test. Commercial cylinder gases certified by the manufacturer to be accurate to within 1 percent of the certified label value are preferable, although cylinder gases certified by the manufacturer to 2 percent accuracy are allowed. Additionally, the manufacturer of the SF6 calibration gases should provide a recommended shelf life for each calibration gas cylinder over which the concentration does not change more than 2 percent from the certified value. Another option allowed by this method is for the tester to obtain high concentration certified cylinder gases and then use a dilution system meeting the requirements of EPA Method 205, 40 CFR part 51, appendix M, to make multi-level calibration gas standards. Low-level, mid-level, and high-level calibration gases will be required. The MML must be above the low-level standard, the high-level standard must be no more than four times the low-level standard, and the mid-level standard must be approximately halfway between the high- and low-level standards. See section 12.1 for an example calculation of this procedure.
Note: If using an FTIR as the analytical instrument, the tester has the option of following the CTS procedures of Method 320 in appendix A to 40 CFR part 63; the calibration standards (and procedures) specified in Method 320 may be used in lieu of the calibration standards and procedures in this protocol.
7.2.1 Zero Gas. High purity nitrogen.
7.2.2 Low-Level Calibration Gas. An SF6 calibration gas in nitrogen with a concentration equivalent to 20 to 30 percent of the applicable span value.
7.2.3 Mid-Level Calibration Gas. An SF6 calibration gas in nitrogen with a concentration equivalent to 45 to 55 percent of the applicable span value.
7.2.4 High-Level Calibration Gas. An SF6 calibration gas in nitrogen with a concentration equivalent to 80 to 90 percent of the applicable span value.
8.0 Sample Collection, Preservation, Storage, and Transport
8.1 Test Design.
8.1.1 Determination of Minimum Tracer Gas Flow Rate.
8.1.1.1 Determine (via design calculations or measurements) the approximate flow rate of the exhaust gas through the enclosure, actual cubic feet per minute (acfm).
8.1.1.2 Calculate the minimum tracer gas injection rate necessary to assure a detectable SF6 concentration at the exhaust gas measurement point (see section 12.1 for calculation).
8.1.1.3 Select a flow meter for the injection system with an operating range appropriate for the injection rate selected.
8.1.2 Determination of the Approximate Time to Reach Equilibrium.
8.1.2.1 Determine the volume of the enclosure.
8.1.2.2 Calculate the air changes per minute of the enclosure by dividing the approximate exhaust flow rate (8.1.1.1 above) by the enclosed volume (8.1.2.1 above).
8.1.2.3 Calculate the time at which the tracer concentration in the enclosure will achieve approximate equilibrium. Divide 3 by the air changes per minute (8.1.2.2 above) to establish this time. This is the approximate length of time for the system to come to equilibrium. Concentration equilibrium occurs when the tracer concentration in the enclosure stops changing as a function of time for a constant tracer release rate. Because the press is continuously cycling, equilibrium may be exhibited by a repeating, but stable, cyclic pattern rather than a single constant concentration value. Assure sufficient tracer gas is available to allow the system to come to equilibrium, and to sample for a minimum of 20 minutes and repeat the procedure for a minimum of three test runs. Additional test runs may be required based on the results of the DQO and LCL analyses described in 40 CFR part 63, subpart KK, appendix A.
8.1.3 Location of Injection Points. This method requires a minimum of three tracer gas injection points. The injection points should be located within leak prone, volatile organic compound/hazardous air pollutant (VOC/HAP) producing areas around the press, or horizontally within 12 inches of the defined equipment. One potential configuration of the injection points is depicted in Figure 1. The effect of wind, exfiltration through the building envelope, and air flowing through open building doors should be considered when locating tracer gas injection points within the enclosure. The injection points should also be located at a vertical elevation equal to the VOC/HAP generating zones. The injection points should not be located beneath obstructions that would prevent a natural dispersion of the gas. Document the selected injection points in a drawing(s).
8.1.4 Location of Flow Measurement and Tracer Sampling. Accurate CD inlet gas flow rate measurements are critical to the success of this procedure. Select a measurement location meeting the criteria of EPA Method 1 (40 CFR part 60, appendix A), Sampling and Velocity Traverses for Stationary Sources. Also, when selecting the measurement location, consider whether stratification of the tracer gas is likely at the location (e.g., do not select a location immediately after a point of air in-leakage to the duct).
8.2 Tracer Gas Release. Release the tracer gas at a calculated flow rate (see section 12.1 for calculation) through a minimum of three injection manifolds located as described above in 8.1.3. The tracer gas delivery lines must be routed into the enclosure and attached to the manifolds without violating the integrity of the enclosure.
8.3 Pretest Measurements.
8.3.1 Location of Sampling Point(s). If stratification is not suspected at the measurement location, select a single sample point located at the centroid of the CD inlet duct or at a point no closer to the CD inlet duct walls than 1 meter. If stratification is suspected, establish a ``measurement line'' that passes through the centroidal area and in the direction of any expected stratification. Locate three traverse points at 16.7, 50.0 and 83.3 percent of the measurement line and sample from each of these three points during each run, or follow the procedure in section 8.3.2 to verify whether stratification does or does not exist.
8.3.2 Stratification Verification. The presence or absence of stratification can be verified by using the following procedure. While the facility is operating normally, initiate tracer gas release into the enclosure. For rectangular ducts, locate at least nine sample points in the cross section such that the sample points are the centroids of similarly-shaped, equal area divisions of the cross section. Measure the tracer gas concentration at each point. Calculate the mean value for all sample points. For circular ducts, conduct a 12-point traverse (i.e., six points on each of the two perpendicular diameters) locating the sample points as described in 40 CFR part 60, appendix A, Method 1. Perform the measurements and calculations as described above. Determine if the mean pollutant concentration is more than 10 percent different from any single point. If so, the cross section is considered to be stratified, and the tester may not use a single sample point location, but must use the three traverse points at 16.7, 50.0, and 83.3 percent of the entire measurement line. Other traverse points may be selected, provided that they can be shown to the satisfaction of the Administrator to provide a representative sample over the stack or duct cross section.
8.4 CD Inlet Gas Flow Rate Measurements. The procedures of EPA Methods 1-4 (40 CFR part 60, appendix A) are used to determine the CD inlet gas flow rate. Molecular weight (Method 3) and moisture (Method 4) determinations are only required once for each test series. However, if the test series is not completed within 24 hours, then the molecular weight and moisture measurements should be repeated daily. As a minimum, velocity measurements are conducted according to the procedures of Methods 1 and 2 before and after each test run, as close to the start and end of the run as practicable. A velocity measurement between two runs satisfies both the criterion of ``after'' the run just completed and ``before'' the run to be initiated. Accurate exhaust gas flow rate measurements are critical to the success of this procedure. If significant temporal variations of flow rate are anticipated during the test run under normal process operating conditions, take appropriate steps to accurately measure the flow rate during the test. Examples of steps that might be taken include: (1) conducting additional velocity traverses during the test run; or (2) continuously monitoring a single point of average velocity during the run and using these data, in conjunction with the pre- and post-test traverses, to calculate an average velocity for the test run.
8.5 Tracer Gas Measurement Procedure.
8.5.1 Calibration Error Test. Immediately prior to the emission test (within 2 hours of the start of the test), introduce zero gas and high-level calibration gas at the calibration valve assembly. Zero and calibrate the analyzer according to the manufacturer's procedures using, respectively, nitrogen and the calibration gases. Calculate the predicted response for the low-level and mid-level gases based on a linear response line between the zero and high-level response. Then introduce the low-level and mid-level calibration gases successively to the measurement system. Record the analyzer responses for the low-level and mid-level calibration gases and determine the differences between the measurement system responses and the predicted responses using the equation in section 12.3. These differences must be less than 5 percent of the respective calibration gas value. If not, the measurement system must be replaced or repaired prior to testing. No adjustments to the measurement system shall be conducted after the calibration and before the drift determination (section 8.5.4). If adjustments are necessary before the completion of the test series, perform the drift checks prior to the required adjustments and repeat the calibration following the adjustments. If multiple electronic ranges are to be used, each additional range must be checked with a mid-level calibration gas to verify the multiplication factor.
Note: If using an FTIR for the analytical instrument, you may choose to follow the pretest preparation, evaluation, and calibration procedures of Method 320 (section 8.0) (40 CFR part 63, appendix A) in lieu of the above procedure.
8.5.2 Response Time Test. Conduct this test once prior to each test series. Introduce zero gas into the measurement system at the calibration valve assembly. When the system output has stabilized, switch quickly to the high-level calibration gas. Record the time from the concentration change to the measurement system response equivalent to 95 percent of the step change. Repeat the test three times and average the results.
8.5.3 SF6 Measurement. Sampling of the enclosure exhaust gas at the inlet to the CD should begin at the onset of tracer gas release. If necessary, adjust the tracer gas injection rate such that the measured tracer gas concentration at the CD inlet is within the spectrometer's calibration range (i.e., between the MML and the span value). Once the tracer gas concentration reaches equilibrium, the SF6 concentration should be measured using the infrared spectrometer continuously for at least 20 minutes per run. Continuously record (i.e., record at least once per minute) the concentration. Conduct at least three test runs. On the recording chart, in the data acquisition system, or in a log book, make a note of periods of process interruption or cyclic operation such as the cycles of the hot press operation. Table 1 to this appendix summarizes the physical measurements required for the enclosure testing.
Note: If a GC/ECD is used as the analytical instrument, a continuous record (at least once per minute) likely will not be possible; make a minimum of five injections during each test run. Also, the minimum test run duration criterion of 20 minutes applies.
8.5.4 Drift Determination. Immediately following the completion of the test run, reintroduce the zero and mid-level calibration gases, one at a time, to the measurement system at the calibration valve assembly. (Make no adjustments to the measurement system until both the zero and calibration drift checks are made.) Record the analyzer responses for the zero and mid-level calibration gases and determine the difference between the instrument responses for each gas prior to and after the emission test run using the equation in section 12.4. If the drift values exceed the specified limits (section 13), invalidate the test results preceding the check and repeat the test following corrections to the measurement system. Alternatively, recalibrate the test measurement system as in section 8.5.1 and report the results using both sets of calibration data (i.e., data determined prior to the test period and data determined following the test period). Note: If using an FTIR for the analytical instrument, you may choose to follow the post-test calibration procedures of Method 320 in appendix A to 40 CFR part 63 (section 8.11.2) in lieu of the above procedures.
8.6 Ambient Air Sampling (Optional). Sampling the ambient air surrounding the enclosure is optional. However, taking these samples during the capture efficiency testing will identify those areas of the enclosure that may be performing less efficiently.
8.6.1 Location of Ambient Samples Outside the Enclosure (Optional). In selecting the sampling locations for collecting samples of the ambient air surrounding the enclosure, consider potential leak points, the direction of the release, and laminar flow characteristics in the area surrounding the enclosure. Samples should be collected from all sides of the enclosure, downstream in the prevailing room air flow, and in the operating personnel occupancy areas.
8.6.2 Collection of Ambient Samples (Optional). During the tracer gas release, collect ambient samples from the area surrounding the enclosure perimeter at predetermined location using disposable syringes or some other type of containers that are non-absorbent, inert, and that have low permeability (i.e., polyvinyl fluoride film or polyester film sample bags or polyethylene, polypropylene, nylon or glass bottles). The use of disposable syringes allows samples to be injected directly into a gas chromatograph. Concentration measurements taken around the perimeter of the enclosure provide evidence of capture performance and will assist in the identification of those areas of the enclosure that are performing less efficiently.
8.6.3 Analysis and Storage of Ambient Samples (Optional). Analyze the ambient samples using an analytical instrument calibrated and operated according to the procedures in this appendix or ASTM E 260 and ASTM E 697. Samples may be analyzed immediately after a sample is taken, or they may be stored for future analysis. Experience has shown no degradation of concentration in polypropylene syringes when stored for several months as long as the needle or syringe is plugged. Polypropylene syringes should be discarded after one use to eliminate the possibility of cross contamination of samples.
9.0 Quality Control
9.1 Sampling, System Leak Check. A sampling system leak check should be conducted prior to and after each test run to ensure the integrity of the sampling system.
9.2 Zero and Calibration Drift Tests. ------------------------------------------------------------------------
Section Quality control measure Effect------------------------------------------------------------------------8.5.4.................. Zero and calibration Ensures that bias
drift tests. introduced by drift
in the measurement
system output during
the run is no greater
than 3 percent of
span.------------------------------------------------------------------------
10.0 Calibration and Standardization
10.1 Control Device Inlet Air Flow Rate Measurement Equipment. Follow the equipment calibration requirements specified in Methods 2, 3, and 4 (appendix A to 40 CFR part 60) for measuring the velocity, molecular weight, and moisture of the control device inlet air.
10.2 Tracer Gas Injection Rate. A dry gas volume flow meter, mass flow meter, or orifice can be used to measure the tracer gas injection flow rate. The selected flow measurement device must have an accuracy of greater than 5 percent at the field operating range. Prior to the test, verify the calibration of the selected flow measurement device using either a wet test meter, spirometer, or liquid displacement meter as the calibration device. Select a minimum of two flow rates to bracket the expected field operating range of the flow meter. Conduct three calibration runs at each of the two selected flow rates. For each run, note the exact quantity of gas as determined by the calibration standard and the gas volume indicated by the flow meter. For each flow rate, calculate the average percent difference of the indicated flow compared to the calibration standard.
10.3 Spectrometer. Follow the calibration requirements specified by the equipment manufacturer for infrared spectrometer measurements and conduct the pretest calibration error test specified in section 8.5.1. Note: if using an FTIR analytical instrument see Method 320, section 10 (appendix A to 40 CFR part 63).
10.4 Gas Chromatograph. Follow the pre-test calibration requirements specified in section 8.5.1.
10.5 Gas Chromatograph for Ambient Sampling (Optional). For the optional ambient sampling, follow the calibration requirements specified in section 8.5.1 or ASTM E 260 and E 697 and by the equipment manufacturer for gas chromatograph measurements.
11.0 Analytical Procedures
The sample collection and analysis are concurrent for this method (see section 8.0).
12.0 Calculations and Data Analysis
12.1 Estimate MML and Span. The MML is the minimum measurement level. The selection of this level is at the discretion of the tester. However, the MML must be higher than the low-level calibration standard, and the tester must be able to measure at this level with a precision of <=10 percent. As an example, select the MML as 10 times the instrument's published detection limit. The detection limit of one instrument is 0.01 parts per million by volume (ppmv). Therefore, the MML would be 0.10 ppmv. Select the low-level calibration standard as 0.08 ppmv. The high-level standard would be four times the low-level standard or 0.32 ppmv. A reasonable mid-level standard would then be 0.20 ppmv (halfway between the low-level standard and the high-level standard). Finally, the span value would be approximately 0.40 ppmv (the high-level value is 80 percent of the span). In this example, the following MML, calibration standards, and span values would apply:MML = 0.10 ppmvLow-level standard = 0.08 ppmvMid-level standard = 0.20 ppmvHigh-level standard = 0.32 ppmvSpan value = 0.40 ppmv
12.2 Estimate Tracer Gas Injection Rate for the Given Span. To estimate the minimum and maximum tracer gas injection rate, assume a worst case capture efficiency of 80 percent, and calculate the tracer gas flow rate based on known or measured parameters. To estimate the minimum tracer gas injection rate, assume that the MML concentration (10 times the IR detection limit in this example) is desired at the measurement location. The following equation can be used to estimate the minimum tracer gas injection rate: ((QT-MIN x 0.8)/QE) x (CT / 100) x
10\6\ = MML QT-MIN = 1.25 x MML x (QE/CT) x
10-4 Where: QT-MIN = minimum volumetric flow rate of tracer gas injected,
standard cubic feet per minute (scfm);QE = volumetric flow rate of exhaust gas, scfm;CT = Tracer gas (SF6) concentration in gas blend,
percent by volume;MML = minimum measured level, ppmv = 10 x IRDL (for this
example);IRDL = IR detection limit, ppmv.
Standard conditions: 20 [deg]C, 760 millimeters of mercury (mm Hg).
To estimate the maximum tracer gas injection rate, assume that the span value is desired at the measurement location. The following equation can be used to estimate the maximum tracer gas injection rate: ((QT-MAX x 0.8)/QE) x (CT / 100) x
10\6\ = span value QT-MAX = 1.25 x span value x (QE/CT) x
10-4 Where: QT-MAX = maximum volumetric flow rate of tracer gas injected,
scfm;Span value = instrument span value, ppmv.
The following example illustrates this calculation procedure:
Find the range of volumetric flow rate of tracer gas to be injected when the following parameters are known: QE = 60,000 scfm (typical exhaust gas flow rate from an
enclosure);CT = 2 percent SF6 in nitrogen;IRDL = 0.01 ppmv (per manufacturer's specifications);MML = 10 x IRDL = 0.10 ppmv;Span value = 0.40 ppmv;QT = ? Minimum tracer gas volumetric flow rate: QT-MIN = 1.25 x MML x (QE/CT) x
10-4 QT-MIN = 1.25 x 0.10 x (60,000/2) x 10-4 = 0.375
scfm Maximum tracer gas volumetric flow rate: QT-MAX = 1.25 x span value x (QE/CT) x
10-4
QT-MAX = 1.25 x 0.40 x (60,000/2) x 10-4 = 1.5 scfm
In this example, the estimated total volumetric flow rate of the two percent SF6 tracer gas injected through the manifolds in the enclosure lies between 0.375 and 1.5 scfm.
12.3 Calibration Error. Calculate the calibration error for the low-level and mid-level calibration gases using the following equation:
Err = [verbar]Cstd-Cmeasverbar; / Cstd x 100 Where: Err = calibration error, percent;Cstd = low-level or mid-level calibration gas value, ppmv;Cmeas = measured response to low-level or mid-level
concentration gas, ppmv.
12.4 Calibration Drift. Calculate the calibration drift for the zero and low-level calibration gases using the following equation: D = [bond]verbar;Cinitial - Cfinal [bond]verbar; /
Cspan x 100 Where: D = calibration drift, percent;Cinitial = low-level or mid-level calibration gas value
measured before test run, ppmv;Cfinal = low-level or mid-level calibration gas value
measured after test run, ppmv;Cspan = span value, ppmv.
12.5 Calculate Capture Efficiency. The equation to calculate enclosure capture efficiency is provided below: CE = (SF6-CD / SF6-INJ) x 100 Where: CE = capture efficiency;SF6-CD = mass of SF6 measured at the inlet to the
CD;SF6-INJ = mass of SF6 injected from the tracer
source into the enclosure. Calculate the CE for each of the initial three test runs. Then follow the procedures outlined in section 12.6 to calculate the overall capture efficiency.
12.6 Calculate Overall Capture Efficiency. After calculating the capture efficiency for each of the initial three test runs, follow the procedures in 40 CFR part 63, subpart KK, appendix A, to determine if the results of the testing can be used in determining compliance with the requirements of the rule. There are two methods that can be used: the DQO and LCL methods. The DQO method is described in section 3 of 40 CFR part 63, subpart KK, appendix A, and provides a measure of the precision of the capture efficiency testing conducted. Section 3 of 40 CFR part 63, subpart KK, appendix A, provides an example calculation using results from a facility. If the DQO criteria are met using the first set of three test runs, then the facility can use the average capture efficiency of these test results to determine the capture efficiency of the enclosure. If the DQO criteria are not met, then the facility can conduct another set of three runs and run the DQO analysis again using the results from the six runs OR the facility can elect to use the LCL approach.
The LCL method is described in section 4 of 40 CFR part 63, subpart KK, appendix A, and provides sources that may be performing much better than their regulatory requirement, a screening option by which they can demonstrate compliance. The LCL approach compares the 80 percent lower confidence limit for the mean measured CE value to the applicable regulatory requirement. If the LCL capture efficiency is higher than the applicable limit, then the facility is in initial compliance and would use the LCL capture efficiency as the capture efficiency to determine compliance. If the LCL capture efficiency is lower than the applicable limit, then the facility must perform additional test runs and re-run the DQO or LCL analysis.
13.0 Method Performance
13.1 Measurement System Performance Specifications.
13.1.1 Zero Drift. Less than 3 percent of the span value.
13.1.2 Calibration Drift. Less than 3 percent of the span value.
13.1.3 Calibration Error. Less than 5 percent of the calibration gas value.
13.2 Flow Measurement Specifications. The mass flow, volumetric flow, or critical orifice control meter used should have an accuracy of greater than 5 percent at the flow rate used.
13.3 Calibration and Tracer Gas Specifications. The manufacturer of the calibration and tracer gases should provide a recommended shelf life for each calibration gas cylinder over which the concentration does not change more than 2 percent from the certified value.
14.0 Pollution Prevention [Reserved]
15.0 Waste Management [Reserved]
16.0 References
1. 40 CFR part 60, appendix A, EPA Method 1--Sample and velocity traverses for stationary sources.
2. 40 CFR part 60, appendix A, EPA Method 2--Determination of stack gas velocity and volumetric flow rate.
3. 40 CFR part 60, appendix A, EPA Method 3--Gas analysis for the determination of dry molecular weight.
4. 40 CFR part 60, appendix A, EPA Method 4--Determination of moisture content in stack gases.
5. SEMI F15-93 Test Method for Enclosures Using Sulfur Hexafluoride Tracer Gas and Gas Chromotography.
6. Memorandum from John S. Seitz, Director, Office of Air Quality Planning and Standards, to EPA Regional Directors, Revised Capture Efficiency Guidance for Control of Volatile Organic Compound Emissions, February 7, 1995. (That memorandum contains an attached technical document from Candace Sorrell, Emission Monitoring and Analysis Division, ``Guidelines for Determining Capture Efficiency,'' January 9, 1994).
7. Technical Systems Audit of Testing at Plant ``C,'' EPA-454/R-00-26, May 2000.
8. Material Safety Data Sheet for SF6 Air Products and Chemicals, Inc. Website: www3.airproducts.com. October 2001.
17.0 Tables, Diagrams, Flowcharts, and Validation Data
Table 1 to Appendix A--Summary of Critical Physical Measurements for Enclosure Testing----------------------------------------------------------------------------------------------------------------
Measurement
Measurement instrumentation Measurement frequency Measurement site----------------------------------------------------------------------------------------------------------------Tracer gas injection rate............ Mass flow meter, Continuous............. Injection manifolds
volumetric flow meter (cylinder gas).
or critical orifice.Tracer gas concentration at control Infrared Spectrometer Continuous (at least Inlet duct to the
device inlet. or GC/ECD. one reading per control device (outlet
minute) for a minimum duct of enclosure).
of 20 minutes.Volumetric air flow rate............. EPA Methods 1, 2, 3, 4 Each test run for Inlet duct to the
(40 CFR part 60, velocity (minimum); control device (outlet
appendix A). Daily for moisture and duct of enclosure).
molecular weight.
Velocity sensor
(Manometer/Pitot tube).
Thermocouple.
Midget Impinger
sampler
Orsat or Fyrite---------------------------------------------------------------------------------------------------------------- [GRAPHIC] [TIFF OMITTED] TR72AD04.008 [GRAPHIC] [TIFF OMITTED] TR72AD04.009 [69 FR 46011, July 30, 2004, as amended at 71 FR 8375, Feb. 16, 2006]
Subpart EEEE_National Emission Standards for Hazardous Air Pollutants:
Organic Liquids Distribution (Non-Gasoline)
Source: 69 FR 5063, Feb. 3, 2004, unless otherwise noted.
What This Subpart Covers