SWCAA 400-072 Rule (70.94.141 RCW)
Emission Standards for Selected Small Source Categories

The Agency has established emission standards and operational requirements for selected small source categories. The standards and requirements contained in this section are intended to be representative of BACT for the affected sources. An air discharge permit application for criteria and/or toxic air pollutants pursuant to SWCAA 400-109 is not required for an emission unit that falls within one of the affected source categories, provided the owner or operator submits proper notification to the Agency and maintains compliance with the monitoring, recordkeeping, testing, and reporting requirements specified for the applicable source category. Any emission unit that fails to maintain continuing compliance with applicable requirements becomes subject to SWCAA 400-109.

All emission units covered by the provisions of this section are subject to registration pursuant to SWCAA 400-100 and periodic inspection by Agency representatives.

(1) Exceptions.

(a) The owner or operator of an emission unit meeting any of the applicability criteria listed below may voluntarily elect to file an air discharge permit application pursuant to SWCAA 400-109.

(b) If an emission unit meeting the applicability criteria listed in any part of this section is located at a "stationary source" that is otherwise required to be permitted pursuant to SWCAA 400-109, the Agency may require that the emission unit be included in the permit for the affected "stationary source".

(2) Agency notification.

An owner or operator who wishes to install a new emission unit under the provisions of this section must file a formal notification with the Agency for each emission unit. Notification shall be performed using forms developed by the Agency for that purpose. The notification must include documentation sufficient to positively identify the affected emission unit, establish applicability under this section, and demonstrate compliance with applicable requirements. Required information includes, but is not limited to, the following:

(a) Location of installation and/or operation;
(b) Identification of responsible party (owner or operator);
(c) Equipment specifications (make, model number, serial number, year of manufacture, rated capacity, exhaust stack configuration, fuel type, etc.);
(d) Control equipment specifications;
(e) Vendor performance guarantees; and
(f) Operational information (hours of operation, maximum product throughput, fuel consumption, etc.).

(3) Processing fee.

Each notification shall be accompanied by the payment of a processing fee of $250.00. This fee shall be paid for each piece of equipment subject to notification.

(4) Source categories.

(a) Coffee roasters.

(i) Applicability. The provisions of this section apply to batch configuration coffee roasters with a capacity of 10 pounds or greater, but less than 100 pounds of green coffee beans per batch.

(ii) Emission limits and standards.

(A) Visible emissions from the coffee roaster exhaust stack shall not exceed five percent opacity for more than 3 minutes in any one hour period as determined in accordance with SWCAA Method 9 (SWCAA 400, Appendix A).
(B) Operations that cause or contribute to odors that could unreasonably interfere with any other property owner's use and enjoyment of their property shall use recognized good practice and procedures to reduce those odors to a reasonable minimum, consistent with the requirements of SWCAA 400-040(4).

(iii) General requirements.

(A) Each coffee roaster shall be equipped with an afterburner designed for a minimum residence time of 0.5 seconds, and capable of maintaining an operating temperature of not less than 1,200˚F.
(B) Each coffee roaster shall have an operable temperature gauge capable of monitoring afterburner operating temperature on a continual basis.
(C) Each coffee roaster shall be exhausted to the afterburner whenever smoke or odors are generated by roasting and cooling activities.
(D) Afterburners shall be operated whenever the associated coffee roaster is in operation. The afterburner shall be operated and maintained in accordance with the manufacturer's specifications. Furthermore, the afterburner shall be operated in a manner that minimizes emissions.
(E) The exhaust point for each coffee roaster shall be a minimum of 200 feet from the nearest residential structure.
(F) Each coffee roaster and afterburner shall be fired on natural gas only.
(G) Afterburner exhaust shall be discharged vertically at least four feet above the roof peak of the building containing the afterburner, and at a point higher than surrounding buildings. Any device that obstructs or prevents vertical discharge is prohibited.

(iv) Monitoring and recordkeeping requirements. The information listed below shall be recorded at the specified intervals, and maintained in a readily accessible form for a minimum of 3 years. With the exception of data logged by a computerized data acquisition system, each required record shall include the date and the name of the person making the record entry.

(A) Afterburner operating temperature shall be recorded weekly;
(B) Quantity of coffee roasted shall be recorded weekly;
(C) Upset conditions that cause excess emissions shall be recorded for each occurrence; and
(D) All air quality related complaints, including odor complaints, received by the permittee and the results of any subsequent investigation or corrective action shall be recorded for each occurrence.

(v) Testing requirements. None.

(vi) Reporting requirements.

(A) All air quality related complaints, including odor complaints, received by the owner or operator shall be reported to SWCAA within 3 business days of receipt.
(B) The owner or operator of an affected coffee roaster shall report the following information to the Agency no later than March 15th for the preceding calendar year:

(I) Quantity of natural gas consumed by the roaster and afterburner;
(II) Quantity of coffee roasted; and
(III) Air emissions of criteria air pollutants, VOCs, and toxic air pollutants (TAPs).

(b) Small gas fired boilers/heaters.

(i) Applicability. The provisions of this section apply to gas fired (natural gas/propane/LPG) boilers and heaters with individual rated heat inputs equal to or greater than 0.4 MMBtu/hr and equal to or less than 2.0 MMBtu/hr. For the purposes of this subsection, the term "boiler" means any combustion equipment designed to produce steam or to heat water that is not used exclusively to produce electricity for sale.

(ii) Emission limits and standards.

(A) Visible emissions from the boiler exhaust stack shall not exceed zero percent opacity for more than 3 minutes in any one hour period as determined in accordance with SWCAA Method 9. (SWCAA 400, Appendix A).
(B) Each boiler/heater shall be equipped with combustion technology capable of maintaining NOX and CO emissions at, or below, 30 ppmv and 50 ppmv, respectively (corrected to 3% O2, dry).

(iii) General requirements.

(A) Each boiler/heater shall only be fired on natural gas, propane, or LPG.
(B) Boiler/heater exhaust shall be discharged vertically above the roof peak of the building in which the emission unit is housed, and at a point higher than surrounding buildings. Any device that obstructs or prevents vertical discharge is prohibited.

(iv) Monitoring and recordkeeping requirements. The information listed below shall be recorded at the specified intervals, and maintained in a readily accessible form for a minimum of 3 years. With the exception of data logged by a computerized data acquisition system, each required record shall include the date and the name of the person making the record entry.

(A) Quantity of fuel consumed by the boiler/heater shall be recorded for each calendar month;
(B) Maintenance activities for the boiler/heater shall be logged for each occurrence;
(C) Upset conditions that cause excess emissions shall be recorded for each occurrence; and
(D) All air quality related complaints received by the permittee and the results of any subsequent investigation or corrective action shall be recorded for each occurrence.

(v) Testing requirements.

(A) Each boiler/heater shall undergo emission monitoring no later than 60 calendar days after commencing initial operation. Subsequent monitoring shall be conducted annually thereafter no later the end of the month in which the original monitoring was conducted. An alternate monitoring schedule may be implemented, but must be approved by the Agency prior to use. All emission monitoring shall be conducted in accordance with the requirements of SWCAA 400-106(2).
(B) If emission monitoring results for a boiler/heater indicate that emission concentrations may exceed 30 ppmvd NOX or 50 ppmvd CO, corrected to 3% O2, the owner or operator shall either perform 60 minutes of additional monitoring to more accurately quantify CO and NOX emissions, or initiate corrective action. Corrective action shall be initiated as soon as practical but no later than 3 business days after the potential exceedance is identified. Corrective action includes burner tuning, maintenance by service personnel, limitation of unit load, or other action taken to lower emission concentrations. Corrective action shall be pursued until observed emission concentrations no longer exceed 30 ppmvd NOX or 50 ppmvd CO, corrected to 3% O2.

(vi) Reporting requirements.

(A) All air quality related complaints received by the owner or operator shall be reported to the Agency within 3 business days of receipt.
(B) Emission monitoring results for each boiler/heater shall be reported to the Agency within 15 calendar days of completion on forms provided by the Agency.
(C) The owner or operator of an affected boiler/heater shall report the following information to the Agency no later than March 15th for the preceding calendar year:

(I) Quantity of fuel consumed; and
(II) Air emissions of criteria air pollutants, VOCs, and toxic air pollutants (TAPs).

(c) Emergency service internal combustion engines.

(i) Applicability. The provisions of this section apply to emergency service internal combustion engines with a rating of less than 1,000 horsepower (e.g., emergency generators, fire pumps, sewer lift stations, etc.).

(ii) Emission limits and standards.

(A) Visible emissions from diesel fired engine exhaust stacks shall not exceed ten percent opacity for more than 3 minutes in any one hour period as determined in accordance with SWCAA Method 9 (See SWCAA 400, Appendix A). This limitation shall not apply during periods of cold start-up.

(iii) General requirements.

(A) Liquid fueled engines shall only be fired on #2 diesel or biodiesel. Fuel sulfur content of liquid fuels shall not exceed 0.0015% by weight (15 ppmw). A fuel certification from the fuel supplier may be used to demonstrate compliance with this requirement.
(B) Gaseous fueled engines shall only be fired on natural gas or propane.
(C) Each compression ignition engine shall be EPA Tier certified and manufactured no earlier than January 1, 2008.
(D) Engine operation shall be limited to maintenance checks, readiness testing, and actual emergency use.
(E) Engine operation for maintenance checks and readiness testing shall not exceed 100 hours per year. Total engine operation shall not exceed 200 hours per year.
(F) Each engine shall be equipped with a nonresettable hourmeter for the purpose of documenting hours of operation.
(G) Engine exhaust shall be discharged vertically. Any device that obstructs or prevents vertical discharge is prohibited.

(iv) Monitoring and recordkeeping requirements. The information listed below shall be recorded at the specified intervals, and maintained in a readily accessible form for a minimum of 3 years. With the exception of data logged by a computerized data acquisition system, each required record shall include the date and the name of the person making the record entry.

(A) Total hours of operation for each engine shall be recorded annually;
(B) Fuel sulfur certifications shall be recorded for each shipment of liquid fuel;
(C) Maintenance activities shall be recorded for each occurrence consistent with the provisions of 40 CFR 60.4214;
(D) Upset conditions that cause excess emissions shall be recorded for each occurrence; and
(E) All air quality related complaints received by the permittee and the results of any subsequent investigation or corrective action shall be recorded for each occurrence.

(v) Testing requirements. None.

(vi) Reporting requirements.

(A) All air quality related complaints received by the owner or operator shall be reported to SWCAA within three calendar days of receipt.
(B) The owner or operator of an affected emergency engine shall report the following information to the Agency no later than March 15th for the preceding calendar year:

(I) Hours of engine operation; and
(II) Air emissions of criteria air pollutants, VOCs, and toxic air pollutants (TAPs).

(d) Petroleum dry cleaners.

(i) Applicability. The provisions of this section apply to dry cleaning facilities that use petroleum solvent and have a total manufacturer's rated dryer capacity less than 38 kilograms (84 pounds). The total manufacturers' rated dryer capacity is the sum of the manufacturers' rated dryer capacity for each existing and proposed petroleum solvent dryer at the facility.

(ii) Emission limits and standards.

(A) VOC emissions from each dry cleaning facility shall not exceed 1.0 ton per year. Emissions shall be calculated using a mass balance approach assuming that all cleaning fluid utilized at the facility is emitted to the ambient air. Documented quantities of cleaning fluid shipped offsite as waste may be deducted from the calculated emissions.
(B) Operations which cause or contribute to odors that unreasonably interfere with any other property owner's use and enjoyment of their property shall use recognized good practice and procedures to reduce these odors to a reasonable minimum.

(iii) General requirements.

(A) Each dry cleaning facility shall be operated in a business space zoned for commercial activity, located a minimum of 200 feet from the nearest residential structure.
(B) Dry cleaning machines shall only use approved cleaning fluids. The Agency has approved the use of DF-2000 cleaning fluid. Other cleaning fluids may be used upon written approval from the Agency.
(C) Solvent or waste containing solvent shall be stored in closed solvent tanks or containers with no perceptible leaks.
(D) All cartridge filters shall be drained in their sealed housing or other enclosed container for 24 hours prior to disposal.
(E) Perceptible leaks shall be repaired within twenty-four hours unless repair parts must be ordered. If parts must be ordered to repair a leak, the parts shall be ordered within 2 business days of detecting the leak and repair parts shall be installed within 5 business days after receipt.
(F) Pollution control devices associated with each piece of dry cleaning equipment shall be operated whenever the equipment served by that control device is in operation. Control devices shall be operated and maintained in accordance with the manufacturer's specifications.

(iv) Monitoring and recordkeeping requirements. The information listed below shall be recorded at the specified intervals, and maintained in a readily accessible form for a minimum of 3 years. Each required record shall include the date and the name of the person making the record entry.

(A) Each dry cleaning machine shall be visually inspected at least once per week for perceptible leaks. The results of each inspection shall be recorded in an inspection log and maintained on-site. The inspection shall include, but not be limited to the following:

(I) Hose connections, unions, couplings and valves;
(II) Machine door gaskets and seating;
(III) Filter gaskets and seating;
(IV) Pumps;
(V) Solvent tanks and containers;
(VI) Water separators;
(VII) Distillation units;
(VIII) Diverter valves; and
(IX) Filter housings.

(B) The amount of cleaning fluid (e.g., DF-2000) purchased, used, and disposed of shall be recorded monthly.
(C) Upset conditions that cause excess emissions shall be recorded for each occurrence; and
(D) All air quality related complaints, including odor complaints, received by the owner or operator and the results of any subsequent investigation or corrective action shall be recorded for each occurrence.

(v) Testing requirements. None.

(vi) Reporting requirements.

(A) All air quality related complaints, including odor complaints, received by the permittee shall be reported to SWCAA within 3 calendar days of receipt.
(B) The owner or operator of an affected petroleum dry cleaner shall report the following information to the Agency no later than March 15th for the preceding calendar year:

(I) Quantity of cleaning fluid (e.g., DF-2000) consumed; and
(II) Air emissions of criteria air pollutants, VOCs, and toxic air pollutants (TAPs).

(e) Rock crushers and aggregate screens.

(i) Applicability. The provisions of this section apply to individual rock crushers and aggregate screens installed as part of a previously permitted rock crushing operation.

(ii) Emission limits and standards.

(A) Visible emissions from rock crushing equipment shall not exceed 0% opacity for more than three (3) minutes in any one hour period as determined in accordance with SWCAA Method 9 (SWCAA 400, Appendix A).

(iii) General requirements.

(A) Each rock crusher and aggregate screen shall be equipped with a high pressure water spray system for the control of fugitive PM emissions. Operating pressure in each spray system shall be maintained at 80 psig or greater. A functional pressure gauge shall be maintained onsite with a connection point provided for the purpose of demonstrating compliance with the minimum pressure requirement.
(B) Spray/fog nozzles in the high pressure water spray system shall be visually inspected a minimum of once per week when in operation to ensure proper function. Clogged or defective nozzles shall be replaced or repaired prior to subsequent operation.
(C) Material handling points including, but not limited to, conveyor transfer points, aggregate storage piles, and haul roads shall be watered at reasonable intervals as necessary to control fugitive dust emissions.
(D) Additional wet suppression measures shall be employed, as necessary, to control fugitive dust from haul roads, rock crushing, and material handling equipment in the event that process changes or weather patterns result in insufficient water application to control fugitive dust from plant operations.
(E) For portable rock crushing operations, the owner or operator shall notify all property owners immediately adjacent to a new job site a minimum of 10 business days in advance of the intended relocation. Such written notification shall include a complete description of the proposed operation, the emissions control provisions and equipment, the total estimated project emissions, the name, address and phone number of the person in charge of the operation, and contact information for the Agency. Response from adjacent landowners shall be directed to the Agency. Authorized operations are dependent on the receipt of public response regarding the proposed relocation.
(F) For portable rock crushing operations, the owner or operator shall notify the Agency at least 10 business days in advance of relocating approved equipment and shall submit operational information (such as production quantities, hours of operation, location of nearest neighbor, etc.) sufficient to demonstrate that proposed operation will comply with the emission standards for a new source, and will not cause a violation of applicable ambient air quality standards, and if in a nonattainment area, will not interfere with scheduled attainment of ambient standards.

(iv) Monitoring and recordkeeping requirements. The information listed below shall be recorded at the specified intervals, and maintained in a readily accessible form for a minimum of 3 years. Each required record shall include the date and the name of the person making the record entry.

(A) Visual inspection of spray/fog nozzles shall be recorded weekly;
(B) Maintenance, repair, or replacement of affected equipment shall be recorded for each occurrence;
(C) Quantity and size of crushed/screened material shall be recorded monthly;
(D) Relocation of rock crushing equipment shall be recorded for each occurrence.
(E) Upset conditions that cause excess emissions shall be recorded for each occurrence; and
(F) All air quality related complaints received by the owner or operator and the results of any subsequent investigation or corrective action shall be recorded for each occurrence.

(v) Testing requirements. An initial emissions test shall be conducted for each rock crusher and/or aggregate screen within 90 calendar days of commencing operation. All emission testing shall be conducted in accordance with the requirements of 40 CFR 60, Subpart OOO "Standards of Performance for Nonmetallic Mineral Processing Plants."

(vi) Reporting requirements.

(A) All air quality related complaints received by the owner or operator shall be reported to SWCAA within 3 business days of receipt.
(B) The owner or operator of an affected rock crusher or aggregate screen shall report the following information to the Agency no later than March 15th for the preceding calendar year:

(I) Quantity and size of crushed/screened material throughput;
(II) Air emissions of criteria air pollutants.