NORTH COAST UNIFIED AIR QUALITY MANAGEMENT DISTRICT

SECTION 7

CONTROL OF PERCHLOROETHYLENE EMISSIONS FROM DRY CLEANING EQUIPMENT

RULE 7-130 - DEFINITIONS

(a1) ADSORPTIVE CARTRIDGE FILTER: means a replaceable cartridge filter that contains diatomaceous earth or activated clay as the filter medium.

(c1) CARTRIDGE FILTER: means a replaceable cartridge filter that contains one of the following as the filter medium: paper, activated carbon, or paper and activated carbon. A cartridge filter contains no diatomaceous earth or activated clay. Cartridge filters include, but are not limited to: standard filters, split filters, "jumbo filters", and all carbon polishing filters.

(c2) CLOSED-LOOP MACHINE: means dry cleaning equipment in which washing, extraction, and drying are all performed in the same single unit (also known as dry-to-dry) and which recirculates perchloroethylene-laden vapor through a primary control system with no exhaust to the atmosphere during the drying cycle. A closed-loop machine may allow for venting to the ambient air through a fugitive control system after the drying cycle is complete and only while the machine door is open.

(c3) CO-LOCATED WITH A RESIDENCE: means sharing a common wall, floor, or ceiling with a residence. For the purposes of this definition, "residence" means any dwelling or housing which is owned, rented, or occupied by the same person for a period of 180 days or more, excluding short-term housing such as a motel or hotel room rented and occupied by the same person for a period of less than 180 days.

(c4) CONVERTED MACHINE: means an existing vented machine that has been modified to be a closed-loop machine by eliminating the aeration step, installing a primary control system, and providing for recirculation of the perchloroethylene-laden vapor with no exhaust to the atmosphere or workroom during the drying cycle. A converted machine may allow for venting to the ambient air through a fugitive control system after the drying cycle is complete and only while the machine door is open.

(c5) COOL-DOWN: means the portion of the drying cycle that begins when the heating mechanism deactivates and the refrigerated condenser continues to reduce the temperature of the air recirculating through the drum to reduce the concentration of perchloroethylene in the drum.

(d1) DATE OF COMPLIANCE: means the time from the effective date of this control measure in the district until a facility must be in compliance with the specific requirements of this control measure.

(d2) DESORPTION: means regeneration of an activated carbon bed, or any other type of vapor adsorber by removal of the adsorbed solvent using hot air, steam, or other means.

(d3)DIP TANK OPERATIONS: means the immersion of materials in a solution that contains perchloroethylene, for purposes other than dry cleaning, in a tank or container that is separate from the dry cleaning equipment.

(d4) DISTRICT: means the local air pollution control district or air quality management district.

(d5) DRUM: means the rotating cylinder or wheel of the dry cleaning machine that holds the materials being cleaned.

(d6) DRY CLEANING EQUIPMENT: means any machine, device, or apparatus used to dry clean materials with perchloroethylene or to remove residual perchloroethylene from previously cleaned materials. Dry cleaning equipment may include, but is not limited to, a transfer machine, a vented machine, a converted machine, a closed-loop machine, a reclaimer, or a drying cabinet.

(d7) DRY CLEANING SYSTEM: means all of the following equipment, devices, or apparatus associated with the perchloroethylene dry cleaning process: dry cleaning equipment; filter or purification systems; waste holding, treatment, or disposal systems; perchloroethylene supply systems; dip tanks; pumps; gaskets; piping, ducting, fittings, valves, or flanges that convey perchloroethylene-contaminated air; and control systems.

(d8) DRYING CABINET: means a housing in which materials previously cleaned with perchloroethylene are placed to dry and which is used only to dry materials that would otherwise be damaged by the heat and tumbling action of the drying cycle.

(d9) DRYING CYCLE: means the process used to actively remove the perchloroethylene remaining in the materials after washing and extraction. For closed-loop machines, the heated portion of the cycle is followed by cool-down and may be extended beyond cool-down by the activation of a control system. The drying cycle begins when heating coils are activated and ends when the machine ceases rotation of the drum.

(e1) ENVIRONMENTAL TRAINING PROGRAM: means an initial course or a refresher course of the environmental training program for perchloroethylene dry cleaning operations that has been authorized by the Air Resources Board according to the requirements of 17 CCR, Section 93110.

(e2) EQUIVALENT CLOSED-LOOP VAPOR RECOVERY SYSTEM: means a device or combination of devices that achieves, in practice, a perchloroethylene recovery performance equal to or exceeding that of refrigerated condensers.

(e3) EXISTING FACILITY: means any facility that operated dry cleaning equipment prior to the effective date of this control measure in the district. Facility relocations, within the same district, shall be considered existing facilities for the purposes of this control measure.

(f1) FACILITY: means any entity or entities which own or operate perchloroethylene dry cleaning equipment, are owned or operated by the same person or persons, and are located on the same parcel or contiguous parcels.

(f2) FACILITY MILEAGE: means the efficiency of perchloroethylene use at a facility, expressed as the pounds of materials cleaned per gallon of perchloroethylene used, and calculated for all dry cleaning machines at the facility over a specified time period.

(f3) FUGITIVE CONTROL SYSTEM: means a device or apparatus that collects fugitive perchloroethylene vapors from the machine door, button and lint traps, still, or other intentional openings of the dry cleaning system and routes those vapors to a device that reduces the mass of perchloroethylene prior to exhaust of the vapor to the atmosphere.

(f4) FULL-TIME EMPLOYEE: means any person who is employed at the dry cleaning facility and averages at least 30 hours per week in any 90-day period.

(g1) GALLONS OF PERCHLOROETHYLENE USED: means the volume of perchloroethylene, in gallons, introduced into the dry cleaning equipment, and not recovered at the facility for reuse on-site in the dry cleaning equipment, over a specified time period.

(h1) HALOGENATED-HYDROCARBON DETECTOR: means a portable device capable of detecting vapor concentrations of perchloroethylene of 25 ppmv or less and indicating an increasing concentration by emitting an audible signal or visual indicator that varies as the concentration changes.

(l1) LIQUID LEAK: means a leak of liquid containing perchloroethylene of more than 1 drop every 3 minutes.

(m1) MATERIALS: means wearing apparel, draperies, linens, fabrics, textiles, rugs, leather, and other goods that are dry cleaned.

(m2) MUCK COOKER: means a device for heating perchloroethylene-laden waste material to volatilize and recover perchloroethylene.

(n1) NEW FACILITY: means a facility that did not operate any dry cleaning equipment prior to the effective date of this control measure in the district. Facility relocations, within the same district, shall not be considered new facilities for the purposes of this control measure.

(p1) PERCEPTIBLE VAPOR LEAK: means an emission of perchloroethylene vapor from unintended openings in the dry cleaning system, as indicated by the odor of perchloroethylene or the detection of gas flow by passing the fingers over the surface of the system. This definition applies for an interim period of 18 months only, beginning on the effective date of this control measure in the district.

(p2) PERCHLOROETHYLENE (PERC): means the substance with the chemical formula 'C2Cl4', also known by the name 'tetrachloroethylene', which has been identified by the Air Resources Board and listed as a toxic air contaminant in 17 CCR, Section 93000.

(p3) PERCHLOROETHYLENE DRY CLEANING OR DRY CLEANING: means the process used to remove soil, greases, paints, and other unwanted substances from materials with perchloroethylene.

(p4) POUNDS OF MATERIALS CLEANED PER LOAD: means the total dry weight, in pounds, of the materials in each load dry cleaned at the facility, as determined by weighing each load on a scale prior to dry cleaning and recording the value.

(p5) PRIMARY CONTROL SYSTEM: means a refrigerated condenser, or an equivalent closed-loop vapor recovery system approved by the district.

(r1) RECLAIMER: means a machine, device, or apparatus used only to remove residual perchloroethylene from materials that have been previously cleaned in a separate piece of dry cleaning equipment.

(r2) REASONABLY AVAILABLE: as it applies to an initial course for the environmental training program, means that the course is offered within 200 miles of the district boundaries and that all such courses have a capacity, in the aggregate, that is adequate to accommodate at least one person from each facility in the district required to certify a trained operator at that time.

(r3) REFRIGERATED CONDENSER: means a closed-loop vapor recovery system into which perchloroethylene vapors are introduced and trapped by cooling below the dew point of the perchloroethylene.

(s1) SECONDARY CONTROL SYSTEM: means a device or apparatus that reduces the concentration of perchloroethylene in the recirculating air at the end of the drying cycle beyond the level achievable with a refrigerated condenser alone. An "integral" secondary control system is designed and offered as an integral part of a production package with a single make and model of dry cleaning machine and primary control system. An "add-on" secondary control system is designed or offered as a separate retrofit system for use on multiple machine makes and models.

(s2) SELF-SERVICE DRY CLEANING MACHINE: means a perchloroethylene dry cleaning machine that is loaded, activated, or unloaded by the customer.

(s3) SEPARATOR: means any device used to recover perchloroethylene from a water-perchloroethylene mixture.

(s4) STILL: means a device used to volatilize and recover perchloroethylene from contaminated solvent removed from the cleaned materials.

(t1) TRAINED OPERATOR: means the owner, the operator, or an employee of the facility, who holds a record of completion for the initial course of an environmental training program and maintains her/his status by successfully completing the refresher courses as required.

(t2) TRANSFER MACHINE: means a combination of perchloroethylene dry cleaning equipment in which washing and extraction are performed in one unit and drying is performed in a separate unit.

(v1) VAPOR ADSORBER: means a bed of activated carbon or other adsorbent into which perchloroethylene vapors are introduced and trapped for subsequent desorption.

(v1) VAPOR LEAK: means an emission of perchloroethylene vapor from unintended openings in the dry cleaning system, as indicated by a rapid audible signal or visual signal from a halogenated-hydrocarbon detector or a concentration of perchloroethylene exceeding 50 ppmv as methane as indicated by a portable analyzer. This definition applies beginning 18 months after the effective date of this control measure in the district.

(v2) VENTED MACHINE: means dry cleaning equipment in which washing, extraction, and drying are all performed in the same single unit and in which fresh air is introduced into the drum in the last step of the drying cycle and exhausted to the atmosphere, either directly or through a control device.

(w1) WASTE WATER EVAPORATOR: means a device that vaporizes perchloroethylene-contaminated waste water through the addition of thermal or chemical energy, or through physical action.

(w2) WATER-REPELLING OPERATIONS: means the treatment of materials with a water-repellent solution that contains perchloroethylene.