MENDOCINO COUNTY AIR QUALITY MANAGEMENT DISTRICT

RULE 7-400 - CONTROL OF PERCHLOROETHYLENE EMISSIONS FROM DRY CLEANING EQUIPMENT

(a) NOTIFICATION

By the applicable date shown in Column 2 of Table 1, every Owner/Operator of perchloroethylene dry cleaning equipment shall provide the following information to the District:

  1. The name(s) of the owner and operator of the facility.
  2. The facility name and location.
  3. Whether or not the facility is co-located with a residence.
  4. The number, types, and capacities of all dry cleaning equipment.
  5. Any control systems for each dry cleaning machine.
  6. For existing facilities only, the gallons of perchloroethylene purchased by the facility during the previous calendar year.

The District may exempt a source from this requirement if the District maintains current equivalent information on the facility.

(b) RECORDKEEPING

The Owner/Operator of an existing perchloroethylene dry cleaning facility shall maintain records for the specified time period, upon adoption of this rule by the District. The Owner/Operator of a new perchloroethylene dry cleaning facility shall maintain records for the specified time period, beginning upon the commencement of operation. These records, or copies thereof, shall be accessible at the facility at all times.

  1. All of the following records shall be retained for at least 2 years or until the next District inspection of the facility, whichever period is longer.
    1. For each dry cleaning machine, a log showing the date and the pounds of materials cleaned per load.
    2. Purchase and delivery receipts for perchloroethylene.
      1. For only those facilities with solvent tanks that are not directly filled by the perchloroethylene supplier upon delivery, the date(s) and gallons of perchloroethylene added to the solvent tank of each dry cleaning machine.
    3. The completed leak inspection checklists required by subsection (d)(2) and the operation and maintenance checklists required by subsection (d)(1)(A).
    4. For liquid leaks, perceptible vapor leaks, or vapor leaks that were not repaired at the time of detection, a record of the leaking component(s) of the dry cleaning system awaiting repair and the action(s) taken to complete the repair. The record shall include copies of purchase orders or other written records showing when the repair parts were ordered and/or service was requested.
  2. For dry cleaning equipment installed after the effective date of this control measure in the District, the manufacturer's operating manual for all components of the dry cleaning system shall be retained for the life of the equipment.
  3. The original record of completion for each trained operator shall be retained during the employment of that person. A copy of the record of completion shall be retained for an additional period of two years beyond the separation of that person from employment at the facility.

(c) ANNUAL REPORTING

The owner/operator shall maintain an annual report. At the District's discretion, the facility owner or operator shall furnish this annual report to the District by the date specified by the District. The annual report shall include all of the following:

  1. A copy of the record of completion for each trained operator.
  2. The total of the pounds of materials cleaned per load and the gallons of perchloroethylene used for all solvent additions in the reporting period.
  3. The average facility efficiency, determined from all solvent additions in the reporting period, as follows:
         
      The Total of the Pounds of Materials Cleaned Annually.
      The Total of the Gallons of Perchloroethylene Annually.

(d) GOOD OPERATING PRACTICES

The owner/operator shall not operate dry cleaning equipment after the applicable dates shown in column 5 and column 6 of Table 1, unless all of the following requirements are met:

  1. Operation and maintenance requirements. The trained operator, or his/her designee, shall operate and maintain all components of the dry cleaning system in accordance with the requirements of this section and the conditions specified in the facility's operating permit beginning on the applicable date specified in column 5 of Table 1. For operations not specifically addressed, the components shall be operated and maintained in accordance with the manufacturer's recommendations.
    1. The District shall provide an operation and maintenance checklist to the facility. Each operation and maintenance function and the date performed shall be recorded on the checklist. The operation and maintenance checklist provided by the District shall include, at a minimum, the following requirements:
      1. Refrigerated condensers shall be operated to ensure that exhaust gases are recirculated until the air-vapor stream temperature on the outlet side of the refrigerated condenser, downstream of any bypass, is less than or equal to 45ø F (7.2ø C).
      2. Primary control systems, other than refrigerated condensers, shall be operated to ensure that exhaust gases are recirculated until the perchloroethylene concentration in the drum is less than or equal to 8,600 ppmv at the end of the drying cycle, before the machine door is opened and any fugitive control system activates.
      3. Vapor adsorbers used as a primary control system or secondary control system shall be operated to ensure that exhaust gases are recirculated at the temperature specified by the District, based on the manufacturer's recommendations for optimum adsorption. These vapor adsorbers shall be desorbed according to the conditions specified by the District in the facility's operating permit, including a requirement that no perchloroethylene vapors shall be routed to the atmosphere during routine operation or desorption.
      4. During the interim period between compliance with this subsection and compliance with the requirements of subsection (e), an existing facility with a transfer machine or a vented machine shall operate any existing carbon adsorber, which functions during the drying cycle, to meet the following requirements:
        1. Desorption shall be performed periodically, at the frequency specified by the District. The frequency, at a minimum, shall be each time all dry cleaning equipment exhausted to the device has cleaned a total of three pounds of materials for each pound of activated carbon. Desorption shall be performed with the minimum steam pressure and air flow capacity specified by the District.
        2. Once desorption is complete, the carbon bed shall be fully dried according to the manufacturer's instructions.
        3. No vented perchloroethylene vapors shall bypass the carbon adsorber to the atmosphere.
      5. Cartridge filters and adsorptive cartridge filters shall be handled using one of the following methods.
        1. Drained in the filter housing, before disposal, for no less than: 24 hours for cartridge filters and 48 hours for adsorptive cartridge filters. If the filters are then transferred to a separate device to further reduce the volume of perchloroethylene, this treatment shall be done in a system that routes any vapor to a primary control system, with no exhaust to the atmosphere or workroom.
        2. Dried, stripped, sparged, or otherwise treated, within the sealed filter housing, to reduce the volume of perchloroethylene contained in the filter.
      6. A still, and any muck cooker, shall not exceed 75 percent of its capacity, or an alternative level recommended by the manufacturer. A still, and any muck cooker, shall cool to 100ø F (38ø C) or less before emptying or cleaning.
      7. Button and lint traps shall be cleaned each working day and the lint placed in a tightly sealed container.
      8. All parts of the dry cleaning system where perchloroethylene may be exposed to the atmosphere or workroom shall be kept closed at all times except when access is required for proper operation and maintenance.
      9. Waste water evaporators shall be operated to ensure that no liquid perchloroethylene or visible emulsion is allowed to vaporize.
  2. Leak check and repair requirements. The trained operator, or her/his designee, shall inspect the dry cleaning system for liquid leaks and perceptible vapor leaks beginning on the applicable date shown in column 5 of Table 1. The trained operator, or her/his designee, shall inspect the dry cleaning system for vapor leaks instead of perceptible vapor leaks beginning April 1, 1996. The District shall provide a leak inspection checklist to the facility. The trained operator, or her/his designee, shall record the status of each component on the checklist.
    1. The dry cleaning system shall be inspected at least once per week for liquid leaks and:
      1. For perceptible vapor leaks, beginning on the applicable date shown in column 5 of Table 1.
      2. For vapor leaks, beginning April 1, 1996, using one of the following techniques:
        1. A halogenated-hydrocarbon detector.
        2. A portable gas analyzer or an alternative method approved by the District.
    2. Any liquid leak, perceptible vapor leak, or vapor leak that has been detected by the operator shall be noted on the checklist and repaired according to the requirements of this subsection. If the leak is not repaired at the time of detection, the leaking component shall be physically marked or tagged in a manner that is readily observable by a District inspector.
    3. Any liquid leak, perceptible vapor leak, or vapor leak detected by the District, which has not been so noted on the checklist and marked on the leaking component of the dry cleaning system, shall constitute a violation of this section. For enforcement purposes, the District shall:
      1. Identify the presence of a perceptible vapor leak based on the odor of perchloroethylene or the detection of gas flow by passing the fingers over the surface of the system.
      2. Identify the presence of a vapor leak by determining the concentration of perchloroethylene with a portable analyzer:
        1. According to ARB Test Method 21 (17 CCR, Section 94124, March 28, 1986).
        2. Measured 1 cm. away from the dry cleaning system.
    4. Any liquid leak or vapor leak shall be repaired within 24 hours of detection.
      1. If repair parts are not available at the facility, the parts shall be ordered within two working days of detecting such a leak. Such repair parts shall be installed within five working days after receipt. A facility with a leak that has not been repaired by the end of the 15th working day after detection shall not operate the dry cleaning equipment, until the leak is repaired, without a leak-repair extension from the District.
      2. A District may grant a leak-repair extension to a facility, for a single period of 30 days or less, if the District makes these findings:
        1. The delay in repairing the leak could not have been avoided by action on the part of the facility.
        2. The facility used reasonable preventive measures and acted promptly to initiate the repair.
        3. The leak would not significantly increase Perc exposure near the facility.
        4. The facility is in compliance with all other requirements of this section and has a history of compliance.
  3. Environmental training requirements. The facility shall have one or more trained operators beginning on the applicable date shown in column 6 of Table 1.
    1. A trained operator shall be the owner, the operator, or another employee of the facility, who successfully completes the initial course of an environmental training program to become a trained operator. Evidence of successful completion of the initial course shall be the original record of completion issued pursuant to 17 CCR, Section 93110. The trained operator shall be a full-time employee of the facility. Except for the provisions of subsection (d)(3)(C)2., one person cannot serve as the trained operator for two or more facilities simultaneously.
    2. Each trained operator shall successfully complete the refresher course of an environmental training program at least once every three years. Evidence of successful completion of each refresher course shall be the date of the course and the instructor's signature on the original record of completion.
    3. If the facility has only one trained operator and the trained operator leaves the employ of the facility, the facility shall:
      1. Notify the District in writing within 30 days of the departure of the trained operator.
      2. Obtain certification for a replacement trained operator within 3 months, except that a trained operator who owns or manages multiple facilities may serve as the interim trained operator at two of those facilities simultaneously for a maximum period of 4 months, by which time each facility must have its own trained operator.
      3. If the District determines that the initial course of an environmental training program is not reasonably available, the District may extend the certification period for a replacement trained operator until 1 month after the course is reasonably available.

(e) EQUIPMENT

The owner/operator shall not operate dry cleaning equipment after the applicable date shown in column 7 of Table 1, unless the following requirements are met:

  1. Prohibited Equipment. The owner/operator shall not operate any of the following types of dry cleaning equipment after the applicable date shown in column 7 of Table 1.
    1. A transfer machine, including any reclaimer or other device in which materials that have been previously dry cleaned with perchloroethylene are placed to dry, except a drying cabinet that meets the requirements of item (4)(A) of this subsection.
    2. A vented machine.
    3. A self-service dry cleaning machine.
  2. Required Equipment. The owner/operator of each new or existing facility shall meet the applicable requirements of Table 1 as follows:
    1. For an existing facility:
      1. By October 1, 1995, choose either Option 1 or Option 2 of Table 1 and notify the District of her/his choice.
      2. Comply with the requirements of Option 2, notwithstanding her/his choice of Option 1, if the facility does not meet the applicable requirements for Option 1 by April 1, 1996.
      3. Install, operate, and maintain the required equipment for the option chosen, as shown in column 1 of Table 1 for existing facilities.
    2. A new facility shall install, operate, and maintain the required equipment shown in column 1 of Table 1 for new facilities. The applicable requirements shall be determined based on the date the facility commences operation of the dry cleaning equipment.
  3. Specifications for Required Equipment. Required equipment shall meet the following specifications:
    1. A primary control system shall:
      1. Operate during both the heated and cool-down phases of the drying cycle to reduce the mass of perchloroethylene in the recirculating air stream.
      2. Not exhaust to the atmosphere or workroom.
      3. Not require the addition of any form of water to the primary control system that results in physical contact between the water and perchloroethylene.
      4. For refrigerated condensers only:
        1. Be capable of achieving an outlet vapor temperature, downstream of any bypass, of less than or equal to 45ø F (7.2ø C) during cool-down; and
        2. Have a graduated thermometer with a minimum range from 0ø F (-18ø C) to 150ø F (66ø C), which measures the temperature of the outlet vapor stream, downstream of any bypass of the condenser, and is easily visible to the operator.
      5. For equivalent closed-loop vapor recovery systems:
        1. Use a technology that has been demonstrated, pursuant to the requirements of subsection (f), to achieve a perchloroethylene concentration of 8,600 ppmv or less in each test.
        2. Have a device that measures the perchloroethylene concentration, or a demonstrated surrogate parameter, in the drum at the end of each drying cycle, before the machine door is opened and any fugitive control system activates, and indicates if the concentration is above or below 8,600 ppmv. This device shall be installed such that the reading is easily visible to the operator.
    2. A converted machine shall meet all of the following requirements, as demonstrated on-site to the District, either upon conversion or prior to compliance with the requirements of subsection (e)(2)(A):
      1. All process vents that exhaust to the atmosphere or workroom during washing, extraction, or drying shall be sealed.
      2. The converted machine shall use an appropriately-sized primary control system to recover perchloroethylene vapor during the heated and cool-down phases of the drying cycle.
        1. A refrigerated condenser shall be considered appropriately sized, for a machine converted on or after the date that this section is filed with the Secretary of State, if all of the following conditions are met:
          1. The water-cooled condensing coils are replaced with refrigerant-cooled condensing coils.
          2. The compressor of the refrigerated condenser shall have a capacity, in horsepower (hp) that is no less than the minimum capacity, determined as follows:
             
      3. A refrigerated condenser shall be considered appropriately sized, for a machine converted prior to the date that this section is filed with the Secretary of State, if the conditions a. or b. below are met:
        1. The refrigerated condenser shall meet the specifications for new conversions in subsection (e)(3)(B)2.i.
        2. The refrigerated condenser shall achieve, and maintain for 3 minutes, an outlet vapor temperature, measured downstream of the condenser and any bypass of the condenser, of less than or equal to 45ø F (7.2ø C) within 10 minutes of the initiation of cool-down.
      4. An equivalent closed-loop vapor recovery system shall be appropriately sized for the conversion of a vented machine if the system does not extend the total drying time by more than five minutes to meet the specifications of subsection (e)(3)(A)5.
  4. The converted machine shall operate with no liquid leaks and no vapor leaks. Any seal, gasket, or connection determined to have a liquid leak or vapor leak shall be replaced.
    1. A secondary control system shall:
      1. Be designed to function with a primary control system or be designed to function as a combined primary control system and secondary control system that meets all of the applicable requirements of this section.
      2. Not exhaust to the atmosphere or workroom.
      3. Not require the addition of any form of water to the secondary control system that results in physical contact between the water and perchloroethylene.
      4. Use a technology that has been demonstrated, pursuant to the requirements of subsection (f), to achieve a perchloroethylene concentration in the drum of 300 ppmv or less in each test.
      5. Have a holding capacity equal to or greater than 200 percent of the maximum quantity of perchloroethylene vapor expected in the drum prior to activation of the system.
      6. For add-on secondary control systems only, the system shall be sized and capable of reducing the perchloroethylene concentration in the drum from 8,600 ppmv or greater to 300 ppmv or less in the maximum volume of recirculating air in the dry cleaning machine and all contiguous piping.
  5. Specifications for Other Equipment.
    1. A drying cabinet shall:
      1. Be fully enclosed.
      2. Be exhausted via one of the following methods:
        1. To a control system that has been demonstrated, pursuant to the requirements of subsection (f), to achieve a perchloroethylene concentration of 100 ppmv or less in each test, measured at the outlet without dilution.
        2. To a control system that reduces the concentration of perchloroethylene in a closed system with no exhaust to the atmosphere or workroom.

(f) EQUIPMENT TESTING

For a given design, a single test program shall be conducted, in accordance with the following procedures, to meet the specifications in subsections (e)(3) and (e)(4). The person or organization conducting the test program shall prepare a written test plan that describes, in detail, the dry cleaning machine and control systems being tested, the test protocol, and the test method.

  1. Test Program and Scope. A minimum of three tests shall be conducted for each test program on each control system design. All tests for a single test program shall be conducted on a single dry cleaning machine.
    1. Test results for a primary control system design, or an add-on secondary control system design, may be applied to a different make/model of dry cleaning machine if the equipment designer or facility demonstrates, to the satisfaction of the District, that:
      1. The test results would be representative of the performance of the control system design on the different make/model of dry cleaning machine.
      2. The control system design is properly sized for the maximum volume of recirculating air in the dry cleaning machine during the drying cycle.
    2. Test results for an integral secondary control system design may not be applied to a different make/model of dry cleaning machine.
  2. Test Conditions. Testing shall be conducted under normal operating conditions, unless otherwise specified.
    1. For primary control systems and secondary control systems, each test shall be conducted during the cleaning of one load of materials.
      1. The machine shall be filled to no less than 75 percent of its capacity with materials for each test.
      2. The weight of materials shall be recorded for each test.
    2. A primary control system shall be tested on a closed-loop machine, or a converted machine, without a secondary control system.
    3. A secondary control system shall be tested on a closed-loop machine.
      1. An integral secondary control system shall be tested with the primary control system operating normally.
      2. An add-on secondary control system shall be tested independent of a primary control system and the initial perchloroethylene concentration in the drum shall be 8,600 ppmv or greater.
    4. For a control system on the exhaust of a drying cabinet, each test shall be conducted following the placement of materials cleaned with perchloroethylene in the drying cabinet. The materials shall be transferred to the drying cabinet and testing shall begin no later than 15 minutes after the end of the washing and extraction process.
      1. The drying cabinet shall be filled to no less than 50 percent of its capacity with materials for each test.
      2. The weight of materials shall be recorded for each test.
  3. Test Method. Equipment shall be tested in accordance with the following methods.
    1. For primary control systems and secondary control systems:
      1. The temperature of the air in the drum shall be measured and recorded continuously during the entire drying cycle, including the operation of the secondary control system.
      2. Sampling shall be conducted as follows:
        1. For primary control systems and integral secondary control systems, sampling shall begin at the end of the drying cycle and be completed within 5 minutes.
        2. For add-on secondary control systems, sampling shall be done when the concentration of perchloroethylene is 8,600 ppmv or greater and again when the concentration reaches 300 ppmv or less.
        3. Sampling shall be completed prior to the opening of the machine door and activation of any fugitive control system.
      3. The perchloroethylene concentration in the drum shall be determined by one of the following methods:
        1. A sampling port and valve shall be appropriately placed to draw a sample from the interior of the drum or the lint filter housing. The sampling port shall be connected to a gas chromatograph by one-quarter (1/4) inch, outside diameter, Teflon tubing. Any sampling pump shall have Teflon diaphragms. The gas chromatographer shall measure the concentrations of perchloroethylene in accordance with ARB Method 422 (17 CCR, Section 94132, December 31, 1991) or NIOSH Method 1003 (NIOSH Manual of Analytical Methods, U.S. Department of Health and Human Services, August 15, 1987).
        2. A sampling port and valve shall be appropriately placed to draw a sample from the interior of the drum or the lint filter housing. The sampling port shall be connected by one-quarter (1/4) inch outside diameter Teflon tubing to a Tedlar bag. Any sampling pump shall have Teflon diaphragms. The concentration of perchloroethylene in the air sampled shall be measured in accordance with ARB Method 422 (17 CCR, Section 94132, December 31, 1991) or NIOSH Method 1003 (NIOSH Manual of Analytical Methods, U.S. Department of Health and Human Services, August 15, 1987) within 24 hours of sampling. If an independent laboratory is contracted to perform the analysis of the samples, the chain of custody procedures contained in ARB Method 422 or NIOSH Method 1003 shall be followed.
    2. For a control device on the exhaust of a drying cabinet, sampling and analysis shall be conducted using ARB Method 422 (17 CCR, Section 94132, December 31, 1991) or NIOSH Method 1003 (NIOSH Manual of Analytical Methods, U.S. Department of Health and Human Services, August 15, 1987).
    3. An alternative test method deemed acceptable by the Air Pollution Control Officer or Executive Officer of the District and the Executive Officer of the Air Resources Board.
  4. All test plans and test results shall be made available to the District and the Executive Officer of the California Air Resources Board upon request.

(g) WATER-REPELLING AND DIP TANK OPERATIONS

No person shall perform water-repelling or dip tank operations, after the applicable date shown in column 8 of Table 1, unless all of the following requirements are met:

  1. All materials to be treated with perchloroethylene water-repelling solutions shall be treated in a closed-loop machine, a converted machine, or a dip tank.
  2. For dip tank operations:
    1. The dip tank shall be fitted with a cover that prevents the escape of perchloroethylene vapors from the tank and shall remain covered at all times, except when materials are placed in and removed from the dip tank or while the basket is moved into position for draining.
    2. After immersion, the materials shall be drained within the covered dip tank until dripping ceases.
    3. All materials removed from a dip tank shall be immediately placed into a closed-loop machine or a converted machine for drying and not removed from the machine until the materials are dry.

(h) COMPLIANCE

  1. facility shall comply with all provisions of this section as follows:
    1. By the applicable dates of compliance specified in column 1 through column 8 of Table 1.
    2. For compliance with subsection (d)(3) "Environmental Training Requirements", an alternative date of compliance shall apply if the District determines that the initial course of an environmental training program for perchloroethylene dry cleaning operations is not reasonably available.
      1. For existing facilities in the District, if the initial course is not reasonably available by April 1, 1996, the alternative date of compliance for subsection (d)(3) only shall be 6 months from the date the District determines that the initial course is reasonably available.
      2. For each new facility in the District, if the initial course is not reasonably available within the period from 3 months prior to 2 months following commencement of operation, the alternative date of compliance for subsection (d)(3) only shall be 1 month from the date the District determines that the initial course is reasonably available.

Authority cited: Sections 39002, 39655, 39656, 39658, 39659, 39666, 40000, 40001, 40702, and 41700, Health and Safety Code; Sections 7412 and 7416, Title 42, United States Code

Reference: Sections 39655, 39656, 39659, and 39666, Health and Safety Code; Section 7412 and 7414, Title 42, United States Code; Sections 63320, 63.321, 63.323, and 63.324, Title 40, Code of Federal Regulations, Section 93109, Titles 17 and 26, California Code of Regulations.

 

TABLE I

EQUIPMENT REQUIREMENTS AND SUMMARY OF COMPLIANCE TIMES FOR EXISTING AND NEW FACILITIES
Facility Type EQUIPMENT REQUIREMENTS DATE OF COMPLIANCE (effective date of District adoption)
  Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8
Compliance Option(s) Required Dry Cleaning Equipment Initial Notification Recordkeeping Annual Reporting Leak Check & Repair, Operation & Maintenance Requirements Environmental Training Requirements Environmental Requirements Water-Repelling and Dip Tank Requirements
EXISTING FACILITIES 
 
 
 
 
 

OR
Option 1 Converted Closed-Loop Machine with Primary Control System Upon District adoption Upon District adoption Specified by District Upon District adoption April 1, 1996 April 1, 1996 April 1, 1996
Option 2 Closed-Loop Machine with Primary Control System Upon District adoption Upon District adoption Specified by District Upon District adoption April 1, 1996 October 1, 1998 April 1, 1996
NEW FACILITIES (Commencing Operations before April 1, 1996)
  Closed-Loop Machine with Primary Control System On application for permit Upon commencement of operation Specified by District Upon commencement of operation 3 months following commencement of operation Upon commencement of operation Upon commencement of operation
NEW FACILITIES (Commencing Operations before April 1, 1996)
  Closed-Loop Machine with Primary Control System and a Secondary Control System On application for permit Upon commencement of operation Specified by District Upon commencement of operation 3 months following commencement of operation Upon commencement of operation Upon commencement of operation