Many manufacturing plants do not clearly understand the requirements to maintain the exemption for their solvent based parts washers. Solvent based parts washers are exempt from air permitting if they meet the requirements of the Michigan Air Quality Regulations can be found at DEQ Air Rules.
Part 2 Rules Exemptions
R 336.1281 Permit to install exemptions; cleaning, washing, and drying equipment.
Rule 281. The requirement of R 336.1201(1) to obtain a permit to install does not apply to any of the following:
(a) Vacuum-cleaning systems used exclusively for industrial, commercial, or residential housekeeping purposes.
(b) Equipment used for portable steam cleaning.
(c) Blast-cleaning equipment using a suspension of abrasive in water and any exhaust system or collector serving them exclusively.
(d) Portable blast-cleaning equipment equipped with appropriately designed and operated enclosure and control equipment.
(e) Equipment used for washing or drying materials, where the material itself cannot become an air contaminant, if no volatile organic compounds that have a vapor pressure greater than 0.1 millimeter of mercury at standard conditions are used in the process and no oil or solid fuel is burned.
(f) Laundry dryers, extractors, or tumblers for fabrics cleaned with only water solutions of bleach or detergents.
(g) Dry-cleaning equipment that has a capacity of 100 or less pounds of clothes.
(h) Cold cleaners that have an air/vapor interface of not more than 10 square feet. (i) Sterilization equipment at medical and pharmaceutical facilities using steam, hydrogen peroxide, peracetic acid, or a combination thereof.
Part 6/Part 7 Rules R 336.1611 Existing cold cleaners. Rule 611.
(1) A person shall not operate an existing cold cleaner unless all of the provisions of subrules (2) to (4) are met or unless an equivalent control method is approved by the department.
(2) A person shall not operate an existing cold cleaner unless all of the following conditions are met: (a) A cover shall be installed and shall be closed when parts are not being handled in the cleaner. (b) A device shall be available for draining cleaned parts, and the parts shall be drained not less than 15 seconds or until dripping ceases. (c) Waste organic solvent shall be stored only in closed containers, unless the stored solvent is demonstrated to be a safety hazard and is disposed of so that not more than 20%, by weight, is allowed to evaporate into the atmosphere.
(3) A person who is responsible for the operation of a cold cleaner shall develop written procedures for compliance with the provisions of this rule. The procedures shall be posted in an accessible, conspicuous location near the cold cleaner. (2) The provisions of this rule do not apply to cold cleaners that are subject to the provisions of the halogenated solvent cleaner national emission standards for hazardous air pollutants (1995), which are adopted by reference in R 336.1651.