Section NR 440.68 - Petroleum dry cleaners(1) APPLICABILITY AND DESIGNATION OF AFFECTED FACILITY. (a) The provisions of this section are applicable to the following affected facilities located at a petroleum dry cleaning plant with a total manufacturer's rated dryer capacity equal to or greater than 38 kilograms (84 pounds): Petroleum solvent dry cleaning dryers, washers, filters, stills and settling tanks. 1. When the affected facility is installed in an existing plant that is not expanding the manufacturer's rated capacity of its petroleum solvent dryer(s) the total manufacturer's rated dryer capacity is the summation of the manufacturer's rated capacity for each existing petroleum solvent dryer.2. When the affected facility is installed in a plant that is expanding the manufacturer's rated capacity of its petroleum solvent dryers the total manufacturer's rated dryer capacity is the summation of the manufacturer's rated dryer capacity for each existing and proposed new petroleum solvent dryer.3. When the affected facility is installed in a new plant the total manufacturer's rated dryer capacity is the summation of the manufacturer's rated dryer capacity for each proposed new petroleum solvent dryer.4. The petroleum solvent dryers considered in the determination of the total manufacturer's rated dryer capacity are those new and existing dryers in the plant that will be in service at any time after the proposed new source or modification commences operation.(b) Any facility under par. (a) that commences construction or modification after December 14, 1982, is subject to the requirements of this section, except that a dryer installed between December 14, 1982 and September 21, 1984, in a plant with an annual solvent consumption level of less than 17,791 liters (4,700 gallons), is exempt from the requirements of this section. (2) DEFINITIONS. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02. (a) "Cartridge filter" means a discrete filter unit containing both filter paper and activated carbon that traps and removes contaminants from petroleum solvent together with the piping and ductwork used in the installation of this device.(b) "Dryer" means a machine used to remove petroleum solvent from articles of clothing or other textile or leather goods, after washing and removing of excess petroleum solvent, together with the piping and ductwork used in the installation of this device.(c) "Manufacturer's rated dryer capacity" means the dryer's rated capacity of articles, in pounds or kilograms of clothing articles per load, dry basis, that is typically found on each dryer on the manufacturer's name-plate or in the manufacturer's equipment specifications.(d) "Perceptible leaks" means any petroleum solvent vapor or liquid leaks that are conspicuous from visual observation or that bubble after application of a soap solution such as pools or droplets of liquid, open containers or solvent, or solvent laden waste standing open to the atmosphere.(e) "Petroleum dry cleaner" means a dry cleaning facility that uses petroleum solvent in a combination of washers, dryers, filters, stills and settling tanks.(f) "Settling tank" means a container that gravimetrically separates oils, grease and dirt from petroleum solvent together with the piping and ductwork used in the installation of this device.(g) "Solvent filter" means a discrete solvent filter unit containing a porous medium that traps and removes contaminants from petroleum solvent together with the piping and ductwork used in the installation of this device.(h) "Solvent recovery dryer" means a class of dry cleaning dryers that employs a condenser to condense and recover solvent vapors evaporated in a closed-loop stream of heated air together with the piping and ductwork used in the installation of this device.(i) "Still" means a device used to volatilize, separate and recover petroleum solvent from contaminated solvent together with the piping and ductwork used in the installation of this device.(j) "Washer" means a machine which agitates fabric articles in a petroleum solvent bath and spins the articles to remove the solvent together with the piping and ductwork used in the installation of this device.(3) STANDARDS FOR VOLATILE ORGANIC COMPOUNDS. (a) Each affected petroleum solvent dry cleaning dryer that is installed at a petroleum dry cleaning plant shall be a solvent recovery dryer. The solvent recovery dryers shall be properly installed, operated and maintained.(b) Each affected petroleum solvent filter that is installed at a petroleum dry cleaning plant shall be a cartridge filter. Cartridge filters shall be drained in their sealed housings for at least 8 hours prior to their removal.(c) Each manufacturer of an affected petroleum solvent dryer shall include leak inspection and leak repair cycle information in the operating manual and on a clearly visible label posted on each affected facility. Such information should state: To protect against fire hazards, loss of valuable solvents and emissions of solvent to the atmosphere, periodic inspection of this equipment for evidence of leaks and prompt repair of any leaks is recommended. The Wisconsin Department of Natural Resources recommends that the equipment be inspected every 15 days and all vapor or liquid leaks be repaired within the subsequent 15 day period.
Note: The administrator may approve the use of equipment of procedures that have been demonstrated to be equivalent, in terms of reducing VOC emissions, to those prescribed for compliance in this section, under 40 CFR 60.623.
(5) TEST METHODS AND PROCEDURES. Each owner or operator of an affected facility subject to the provisions of sub. (3) (a) shall perform an initial test to verify that the flow rate of recovered solvent from the solvent recovery dryer at the termination of the recovery cycle is no greater than 0.05 liters per minute. This test shall be conducted for a duration of no less than 2 weeks during which no less than 50% of the dryer loads shall be monitored for their final recovered solvent flow rate. The suggested point for measuring the flow rate of recovered solvent is the outlet of the solvent-water separator. Near the end of the recovery cycle the entire flow of recovered solvent should be diverted to a graduated cylinder. As the recovered solvent collects in the graduated cylinder the elapsed time is monitored and recorded in periods of greater than or equal to one minute. At the same time the volume of solvent in the graduated cylinder is monitored and recorded to determine the volume of recovered solvent that is collected during each time period. The recovered solvent flow rate is calculated by dividing the volume of solvent collected per period by the length of time elapsed during the period and converting the result with appropriate factors into units of liters per minute. The recovery cycle and the monitoring procedure should continue until the flow rate of solvent is less than or equal to 0.05 liter per minute. The type of articles cleaned and the total length of the cycle should then be recorded.(6) RECORDKEEPING REQUIREMENTS. Each owner or operator of an affected facility subject to the provisions of this section shall maintain a record of the performance test required under sub. (5).Wis. Admin. Code Department of Natural Resources NR 440.68
Cr. Register, September, 1986, No. 369, eff. 10-1-86; am. (2) Intro.), r. (4), Register, September, 1990, No. 417, eff. 10-1-90; CR 06-109: am. (1) (b) and (5) Register May 2008 No. 629, eff. 6-1-08.