SHAAQMD RULE 3:4 INDUSTRIAL USE OF ORGANIC SOLVENTS
LAST REVISED 12/05/95

Rule 3:4 Industrial Use of Organic Solvents

a. A person shall not discharge more than fifteen (15) pounds of organic solvents into the atmosphere in any one day from any article, machine, equipment, or other contrivance in which any organic solvent or any material containing organic solvent comes into contact with flame or is baked, heat cured, or heat-polymerized, in the presence of oxygen at temperatures above 400oF unless all organic solvents discharged from such article, machine, equipment, or other contrivance have been reduced by at least 85 percent overall or to not more than fifteen (15) pounds in any one day. (Amended 1-3-84)

b. A person shall not discharge more than forty (40) pounds of photochemically reactive solvents into the atmosphere in any one day from any article, machine, equipment, or other contrivance used under conditions other than described in section a, for employing, applying, evaporating, or drying any photochemically reactive solvent, as defined in Rule 1:2, or material containing such solvent, unless all photochemically reactive solvents discharged from such article, machine, equipment, or other contrivance have been reduced either by at least 85 percent overall or to not more than forty (40) pounds in any one day.

Rule 3:4 (Continued)

The provisions of Sections a. and b. of this rule shall not apply to:

1. The spraying or other employment of insecticides, pesticides, or herbicides.

2. The employment, application, evaporation, or drying of saturated halogenated hydrocarbons or perchloroethylene.

3. The employment or application of polyester resins or acetone used in a fiberglass reinforced plastics operation.

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 listed in the definition of photochemically reactive solvent as found in Rule 1:2 - Definitions, it shall be considered as a member of the most reactive chemical groups, i.e., the groups having the least allowable percent of the total of solvents. (Amended 12-5-95)

c. No person shall discharge from any device, contrivance, or machine more than forty (40) pounds per day of any photochemically reactive substance other than those described in a and b above unless such discharge is controlled to reduce emissions by 85 percent. (Amended 10-1-73)

d. 1. No person shall discharge more than 450 pounds per day of any combination of photochemically reactive substances, excluding acetone, from an entire operation employing the application of polyester resins, regardless of controls. (See District Rule 3:13 - Polyester Resin Operations for additional requirements for polyester resin operations.)

(Amended 12-5-95)

2. Hourly emission limitations, limitation for non-photochemically reactive solvents, limitations for cleaning equipment with organic solvents, limitations in the use of architectural coatings containing organic solvents, limitations on the evaporation and disposal of solvents, and other provisions contained in 40 CFR, Part 52.254, Nov. 12, 1973, Vol. 38, No. 217, are incorporated here by reference. (Added 2-28-77)

Rule 3:4 (Continued)

e. The following test methods shall be used to determine compliance with sections a. through d. of this rule:

EPA Method 24A for measurement of emissions concentrations;

EPA Method 18 for speciation of organic emissions if required by the APCO;

EPA Method 2 for measurement of volumetric flow rates;

EPA "Guidelines for Determining Capture Efficiency" dated January 9, 1995, or other methods and protocols approved by the APCO, ARB and EPA for measurement of capture efficiency;

Manufacturers' data sheets or ASTM Methods E168-92, E169-93, and E260-91 (as required by the APCO) for determining composition of solvent-containing mixtures;

ASTM Method D2879-92 or handbook data and calculations based on composition (as required by the APCO) for determination of solvent vapor pressure.

(Amended 12-5-95)