A. No person shall transport or store VOCs without taking necessary and feasible measures to control evaporation, leakage or other discharge into the atmosphere.
B. Emissions of organic solvents from dry cleaning equipment not using perchloroethylene shall be minimized by applying the following controls:
1. Pipe and hose fittings, flanges, valves, seals, storage-container covers, and other equipment must be serviced and maintained so that no liquid solvent leaks from any portion of the equipment;
2. Solvents must be stored in closed containers whose vents are no larger than the minimum diameter necessary for breathing;
3. Equipment, openings (e.g., washer lint traps, button traps, access doors, and other parts) must be kept closed except as required for proper operation and maintenance;
4. A dry cleaning operation which used chlorinated synthetic solvents other than perchloroethylene shall:
a. Cook the residual diatomaceous earth (in the solvent filter) sufficiently so that the wet material contains no more than twenty-five percent solvent (by weight) before being exposed to the atmosphere,
b. Prevent exposure to the atmosphere of residue from the solvent which contains more than sixty percent solvent by weight, and
c. Drain the cartridge filters for at least twenty-four hours in the filter housing before disposing in accordance with applicable rules for hazardous waste, as the case may apply;
5. A newly installed dry cleaning system or machine not using perchloroethylene and having a rated capacity of at least thirty pounds must be constructed, operated, and maintained so as to reduce emissions from the washer and dryer exhaust by at least ninety percent; and
6. Dry cleaning equipment using perchloroethylene shall comply with the provisions of 40 CFR 63, Subpart M (as amended) and Chapter 17.16, Article VII.
C. This subsection applies only to surface coating, solvent surface cleaning, and solvent degreasing, and other operations engaged in the employment or application of organic solvents.
1. No person shall conduct any spray paint operation without minimizing organic solvent emissions. Such operations, other than architectural coating and spot painting, shall be conducted in an enclosed area equipped with controls containing no less than ninety-six percent of the overspray.
2. No person shall either:
a. Employ, apply, evaporate or dry any architectural coating containing photochemically reactive solvents for industrial or commercial purposes; or
b. Thin or dilute any architectural coating with a photochemically reactive solvent.
3. For purposes of this subsection, a photochemically reactive solvent shall be any solvent with an aggregate of more than twenty percent of its total volume composed of the chemical compounds classified in subparagraphs a through c of this paragraph, or which exceeds any of the following percentage composition limitations, referred to the total volume of solvent:
a. A combination of the following types of compounds having an olefinic or cyclo-olefinic type of unsaturation—hydrocarbons, alcohols, aldehydes, esters, ethers, or ketones: five percent.
b. A combination of aromatic compounds with eight or more carbon atoms to the molecule, except ethylbenzene: eight percent.
c. A combination of ethylbenzene, ketones having branched hydrocarbon structures, trichloroethylene or toluene: twenty percent.
4. Whenever any organic solvent or any constituent of an organic solvent may be classified from its chemical structure into more than one of the groups of organic compounds described in subparagraphs (3)(a) through (3)(c) of this section, it shall be considered to be a member of the group having the least allowable percent of the total volume of solvents.
5. No owner or operator of a facility engaged in the surface coating of miscellaneous metal parts and products may operate a coating application system subject to this section that emits volatile organic compounds in excess of any of the following:
a. 4.3 pounds per gallon (0.5 kilograms per liter) of coating, excluding water, delivered to a coating applicator that applies clear coatings.
b. 3.5 pounds per gallon (0.42 kilograms per liter) of coating, excluding water delivered to a coating applicator in a coating application system that is air dried or forced warm air dried at temperatures up to one hundred ninety-four degrees Fahrenheit (ninety degrees centigrade).
c. 3.5 pounds per gallon (0.42 kilograms per liter) of coating, excluding water, delivered to a coating applicator that applies extreme performance coatings.
d. 3.0 pounds per gallon (0.36 kilograms per liter) of coating, excluding water, delivered to a coating applicator for all other coatings and coating application systems.
6. If more than one emission limitation in subdivision 5 of this subsection applies to a specific coating, then the least stringent emission limitation shall be applied.
7. All VOC emissions from solvent washings shall be considered in the emission limitations in subdivision 5 of this subsection, unless the solvent is directed into containers that prevent evaporation into the atmosphere.
D. This rule does not apply to operations that are specifically covered in Section 17.16.230 of this title.
(Ord. 1996-50 § 4, 1996: Ord. 1995-87 § 48, 1995: Ord. 1994-83 § 57, 1994: Ord. 1993-128 § 4 (part), 1993)