Minnesota Administrative Rules
Agency 167 - Pollution Control Agency
Chapter 7008 - CONDITIONALLY EXEMPT STATIONARY SOURCES AND CONDITIONALLY INSIGNIFICANT ACTIVITIES
Part 7008.2500 - WOODWORKING FACILITY; TECHNICAL STANDARDS
Universal Citation: MN Rules 7008.2500
Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1. Eligibility.
A. To be eligible
to operate without a permit under this chapter, the owner or operator of a
woodworking facility must comply with this part and part
7008.2000.
B. Equipment for manufacturing, mechanical
finishing and refinishing. and restoring wood products and ovens for curing or
drying wood products must account for substantially all the emissions from the
woodworking facility. All other emissions from the stationary source must be
from insignificant activities under part
7007.1300. subpart 2 or 3. or
conditionally insignificant activities that comply with parts
7008.4000 and
7008.4100. or both.
C. The combined total heat input capacity of
all fuel-burning ovens for curing or drying wood products must be less than or
equal to 25.000.000 Btu per hour.
D. The owner or operator must limit emissions
of particulate matter from all wood-product manufacturing, mechanical finishing
and refinishing. and restoring equipment to less than 40.000 pounds per
calendar year, calculated according to the method in subpart 5. or limit the
aggregate exhaust airflow rate from all wood-product manufacturing, mechanical
finishing and refinishing. and restoring equipment to less than or equal to:
(1) 177.000 standard cubic feet per minute if
all emissions from wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment are vented to control equipment through a
total enclosure: or
(2) 80.000
standard cubic feet per minute if all emissions from wood-product
manufacturing, mechanical finishing and refinishing. and restoring equipment
are vented to control equipment through a certified hood or total
enclosure.
Subp. 2. Operational requirements.
The owner or operator of a woodworking facility must:
A. ensure that equipment for manufacturing,
mechanical finishing and refinishing. and restoring wood products vents
emissions to control equipment meeting the requirements in subpart 3 at all
times the equipment is operating;
B. operate and maintain the control equipment
as required by the manufacturer's specifications and part
7008.0200, item D;
C. ensure that opacity from the
control-equipment exhaust does not exceed 20 percent opacity when venting
externally;
D. when emissions are
vented externally, check the control-equipment exhaust for any visible
emissions once each day of operation during daylight hours except during
inclement weather. If visible emissions are observed for longer than six
minutes, the owner or operator must:
(1)
inspect the control equipment; and
(2) take corrective actions, including
repairing or replacing control-equipment components when necessary;
E. inspect the control equipment
once each calendar quarter or more frequently according to the manufacturers
specification: and
F. perform the
hood evaluation in subpart 4. item D. if the owner or operator:
(1) chooses to comply with the requirements
in subpart 1, item D. subitem (2): or
(2) uses the certified hood values in subpart
5.
Subp. 3. Control requirements.
A. The
owner or operator of a woodworking facility that chooses to comply with the
emission limit for particulate matter in subpart 1, item D. must install
operate, and maintain control equipment designed to control emissions of
particulate matter on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment.
B. The owner or operator of a woodworking
facility that chooses to comply with the requirements in subpart 1, item D.
subitem (1). must ensure all emissions from wood-product manufacturing,
mechanical finishing and refinishing. and restoring equipment are vented to
control equipment through a total enclosure and must:
(1) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing, and
restoring equipment is less than or equal to 17,000 standard cubic feet per
minute, install, operate, and maintain control equipment designed to emit
particulate matter in a concentration less than or equal to 0.03 grains per
standard cubic foot of exhaust gas on all wood-product manufacturing,
mechanical finishing and refinishing. and restoring equipment;
(2) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing, and
restoring equipment is greater than 17,000 standard cubic feet per minute but
and less than or equal to 26,000 standard cubic feet per minute, install,
operate, and maintain control equipment designed to emit particulate matter in
a concentration less than or equal to 0.02 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment;
(3) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing, and
restoring equipment is greater than 26,000 standard cubic feet per minute but
and less than or equal to 53,000 standard cubic feet per minute, install,
operate, and maintain control equipment designed to emit particulate matter in
a concentration less than or equal to 0.01 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing, and restoring equipment;
(4) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing, and
restoring equipment is greater than 53,000 standard cubic feet per minute but
and less than or equal to 106,000 standard cubic feet per minute, install,
operate, and maintain control equipment designed to emit particulate matter in
a concentration less than or equal to 0.005 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment: or
(5) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing, and
restoring equipment is greater than 106,000 standard cubic feet per minute but
and less than or equal to 177,000 standard cubic feet per minute, install,
operate, and maintain control equipment designed to emit particulate matter in
a concentration less than or equal to 0.003 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment.
C. The owner or operator of a woodworking
facility that chooses to comply with the requirements in subpart 1, item D.
subitem (2). must ensure all emissions from wood-product manufacturing,
mechanical finishing and refinishing. and restoring equipment are vented to
control equipment through a certified hood or total enclosure and must:
(1) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing. and
restoring equipment is less than or equal to 8.000 standard cubic feet per
minute, install operate, and maintain control equipment designed to emit
particulate matter in a concentration less than or equal to 0.03 grains per
standard cubic foot of exhaust gas on all wood-product manufacturing,
mechanical finishing and refinishing. and restoring equipment:
(2) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing. and
restoring equipment is greater than 8.000 standard cubic feet per minute and
less than or equal to 12.000 standard cubic feet per minute, install operate,
and maintain control equipment designed to emit particulate matter in a
concentration less than or equal to 0.02 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment:
(3) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing. and
restoring equipment is greater than 12.000 standard cubic feet per minute and
less than or equal to 24.000 standard cubic feet per minute, install operate,
and maintain control equipment designed to emit particulate matter in a
concentration less than or equal to 0.01 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment:
(4) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing. and
restoring equipment is greater than 24.000 standard cubic feet per minute and
less than or equal to 48.000 standard cubic feet per minute, install operate,
and maintain control equipment designed to emit particulate matter in a
concentration less than or equal to 0.005 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment: or
(5) if the aggregate exhaust airflow rate
from all wood-product manufacturing, mechanical finishing and refinishing. and
restoring equipment is greater than 48.000 standard cubic feet per minute and
less than or equal to 80.000 standard cubic feet per minute, install operate,
and maintain control equipment designed to emit particulate matter in a
concentration less than or equal to 0.003 grains per standard cubic foot of
exhaust gas on all wood-product manufacturing, mechanical finishing and
refinishing. and restoring equipment.
D. If the aggregate exhaust airflow rate from
all wood-product manufacturing, refinishing, and restoring equipment is greater
than 26,000 standard cubic feet per minute but less than or equal to 53,000
standard cubic feet per minute, the owner or operator of a woodworking facility
must install, operate, and maintain control equipment designed to emit
particulate matter in a concentration less than or equal to 0.01 grains per
standard cubic foot of exhaust gas on all wood-product manufacturing,
refinishing, and restoring equipment.
E. If the aggregate exhaust airflow rate from
all wood-product manufacturing, refinishing, and restoring equipment is greater
than 53,000 standard cubic feet per minute but less than or equal to 106,000
standard cubic feet per minute, the owner or operator of a woodworking facility
must install, operate, and maintain control equipment designed to emit
particulate matter in a concentration less than or equal to 0.005 grains per
standard cubic foot of exhaust gas on all wood-product manufacturing,
refinishing, and restoring equipment.
F. If the aggregate exhaust airflow rate from
all wood-product manufacturing, refinishing, and restoring equipment is greater
than 106,000 standard cubic feet per minute but less than or equal to 177,000
standard cubic feet per minute, the owner or operator of a woodworking facility
must install, operate, and maintain control equipment designed to emit
particulate matter in a concentration less than or equal to 0.003 grains per
standard cubic foot of exhaust gas on all wood-product manufacturing,
refinishing, and restoring equipment.
Subp. 4. Record keeping.
The owner or operator of a woodworking facility:
A. must maintain a record of inspection,
maintenance, and repair activities performed pursuant to the manufacturers
specifications for the control equipment;
B. must maintain a written list of all
wood-product manufacturing, mechanical finishing and refinishing. and restoring
equipment and ovens for curing or drying wood products on site that contains:
(1) the design airflow rate from the control
equipment associated with each wood-product manufacturing, mechanical finishing
and refinishing. and restoring equipment;
(2) the manufacturers design particulate
matter concentration from each control equipment installed:
(3) if the manufacturers design particulate
matter concentration is not used for the calculation method in subpart 5. the
default concentration value used for each control equipment installed:
and
(4) the heat input capacity of
each fuel-burning oven used for curing or drying wood products.
C. must maintain records of the
date and time of each visible emission check and whether or not any visible
emissions were observed;
D. if the
owner or operator chooses to comply with the emission limit for particulate
matter in subpart 1, item D. must maintain records for each calendar year of
the hours operated for the control equipment associated with each wood-product
manufacturing, mechanical finishing and refinishing. and restoring equipment:
and
E. if the emissions from
wood-product manufacturing, mechanical finishing and refinishing. and restoring
equipment are vented to the control equipment through a hood, may evaluate, on
a form provided by the commissioner, whether the hood conforms to the design
and operating practices recommended in "Industrial Ventilation - A Manual of
Recommended Practice. American Conference of Governmental Industrial
Hygienists." The manual is incorporated by reference under part
7011.0061. An owner or operator
that performs this evaluation must:
(1)
maintain at the stationary source records of the evaluation of each hood and
certification required in part
7011.0072. subpart 2:
and
(2) record each month the fan
rotation speed, fan power draw, face velocity, or other comparable airflow
indicator for each hood.
Subp. 5. Notification.
The owner or operator that chooses to comply with the emission limit for particulate matter in subpart 1, item D. must calculate emissions of particulate matter from each wood-product manufacturing, mechanical finishing and refinishing. and restoring equipment according to the following equations:
Where:
E = actual emissions from the wood-product manufacturing, mechanical finishing and refinishing. or restoring equipment in pounds per calendar year.
Ec = actual emissions from the control equipment, in pounds per calendar year.
Eu = actual emissions that are uncaptured by the control equipment, in pounds per calendar year.
OP = hours of operations of the control equipment per calendar year.
EF = design concentration for particulate matter from the control equipment, in grains per standard cubic foot, but if the manufacturers design value is unknown, then the default value is 0.07 grains per standard cubic foot for cyclones or 0.03 grains per standard cubic foot for fabric filters.
QAir = design airflow rate from the control equipment, in standard cubic feet per minute.
R = the ratio of emissions that are uncaptured by the control equipment to the emissions that are captured and controlled by the control equipment. When emissions are captured through a total enclosure and vented to any type of control equipment, the value of R is 0. When emissions are captured through a certified hood, the value of R is 3.57 when vented to a fabric filter or 1.14 when vented to a cyclone or other type of control equipment. When emissions are captured through an uncertified hood, the value of R is 14.29 when vented to a fabric filter or 4.54 when vented to a cyclone or other type of control equipment.
Subp. 6. Notification.
A.
If the owner or operator of a woodworking facility covered by a permit issued
under parts
7007.0050 to
7007.1850 intends to operate
without a permit according to this chapter, the owner or operator must:
(1) request that the commissioner void the
permit issued under parts
7007.0050 to
7007.1850 for the stationary
source before operating under this chapter; and
(2) notify the commissioner in a format
specified by the commissioner.
B. The owner or operator of a woodworking
facility not described in item A must notify the commissioner in a format
specified by the commissioner within 120 days after the effective date of this
part or within 120 days after beginning to operate a woodworking
facility.
C. The notification
required under this subpart must contain:
(1)
the owner's name;
(2) the
operator's name, if different than the owner's name;
(3) the facility name and address; and
(4) the manufacturers design
particulate matter concentration and airflow rate from each control equipment
installed or, if the facility has not been in operation for one calendar year,
the anticipated manufacturers design particulate matter concentration and
airflow rate from each control equipment.
Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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