KERAPCD RULE 410.3 ORGANIC SOLVENT DEGREASING OPERATIONS          
LAST REVISED 05/06/91
          
          
          RULE 410.3 Organic Solvent Degreasing Operations - 
                     Adopted 6/26/79, Amended 11/27/79, 6/29/81,
                     Renumbered 5/89, Amended 5/6/91

          I.    Applicability

                The requirements of this Rule shall apply to all organic
                solvent degreasing operations.

          II.   Definitions

                A.  Cold Cleaner:  any batch loaded, non-boiling solvent
                    degreaser.

                B.  Condenser Equipment:  any equipment, such as
                    refrigerated or non-refrigerated freeboard chillers,
                    condenser coils, or water jackets, used to condense
                    solvent vapor in a vapor degreaser.

                C.  Condenser Flow Switch:  a safety switch which shuts off
                    sump heat if condenser water fails to circulate or if
                    condenser water temperature rises above the designated
                    operating temperature.

                D.  Conveyorized Degreaser:  any continuously loaded,
                    conveyorized solvent degreaser, either boiling or 
                    non-boiling.

                E.  Degreaser:  a tank, tray, drum, or other container in
                    which objects to be cleaned are exposed to a degreasing
                    solvent or degreasing solvent vapor.

                F.  Freeboard Height:

                    1.  For cold cleaning degreaser, is the distance from
                        the top of the solvent or solvent drain to the top
                        of the degreaser, based on inside tank dimensions.

                    2.  For remote reservoir degreaser, is the distance 
                        from the solvent drain to the top of the degreaser, 
                        based on inside dimensions.

                    3.  For vapor degreasing tanks, is the distance from 
                        the solvent air-vapor interface to the top of the 
                        basic degreaser tank, based on inside tank 
                        dimensions.

                G.  Freeboard Ratio:  the freeboard height divided by the
                    smaller of the length or the width of the degreaser.

                H.  High Volatility Solvent:  any solvent that is not a 
                    low volatility solvent.

                I.  Low Volatility Solvent:  any solvent with an initial
                    boiling point greater than 120C (248F) and with a
                    temperature, as used, at least 100C (180F) below the
                    initial boiling point.

                J.  Make-Up Solvent:  that solvent which is added to a
                    degreaser operation to replace solvent lost through
                    evaporation, carryout, splashing, leakage, or disposal.

                K.  Open-Top Vapor Degreaser:  any batch loaded, boiling
                    solvent degreaser.

                L.  Remote Reservoir:  a liquid solvent tank which is
                    completely enclosed except for a solvent return opening
                    no larger than 100 cm2 (15 in2) which allows used
                    solvent to drain into it from a separate solvent sink 
                    or work area and which is not accessible for soaking 
                    parts.

                M.  Solvent:  any liquid containing an organic compound or
                    combination of organic compounds, which are used as
                    diluents, thinners, dissolvers, viscosity reducers,
                    cleaning agents, or for other similar uses.  These
                    liquids are principally derived from petroleum and
                    include petroleum distillates, chlorinated hydrocarbons,
                    chlorofluorcarbons, ketones, and alcohols.  Solutions,
                    emulsions, and dispersions of water and soap, or water
                    and detergent, are not organic solvents.  Soaps and
                    detergents are water based surfactants.

                N.  Spray Safety Switch:  a safety switch which cuts off 
                    the pump of the spray applicator if the vapor level 
                    drops below a specified level.

                O.  Vapor Level Control Thermostat:  a safety switch which
                    turns off the sump heater if the thermostat senses the
                    temperature rising above the designed operating level 
                    at the center of the air-vapor interface.

                P.  Volatile Organic Compound (VOC):  any compound
                    containing at least one atom of carbon except for 
                    the following exempt compounds:

                            Methane,
                            Carbon Monoxide,
                            Carbon Dioxide,
                            Carbonic Acid,
                            Metallic Carbides or Carbonates,
                            Ammonium Carbonates,
                            Methylene Chloride,
                            Methyl Chloroform (1,1,1-trichloroethane),
                            CFC-113 (triclorotrifluoroethane),
                            CFC-11 (triclorofluoromethane),
                            CFC-12 (dichlorodifluoromethane),
                            CFC-22 (chlorodifluoromethane),
                            FC-23 (trifluoromethane),
                            CFC-114 (dichlorotetrafluoroethane),
                            CFC-115 (chloropentafluoroethane),
                            HCFC-123 (dichlorotrifluoroethane),
                            HFC-134a (tetrafluoroethane),
                            HCFC-141b (dichlorofluoroethane), and
                            HCFC-142b (chlorodifluoroethane).

                Q.  Ultrasonic:  the enhancement of the cleaning process by
                    vibrating the solvent with high frequency sound waves,
                    causing implosion of microscopic vapor cavities within
                    the liquid solvent.

                R.  Wipe Cleaning:  a method of cleaning which utilizes a
                    cloth, cotton swab or other material, wetted with a
                    solvent, which is physically rubbed on the surface to be
                    degreased.

          III.  Exemptions

                A.  The provisions of this Rule do not apply to wipe
                    cleaning.

                B.  The provisions of this Rule shall not apply to single
                    pieces of degreasing equipment, which use unheated
                    solvent, and which have liquid surface area of less 
                    than 929 cm2 (1.0 ft2), unless the aggregate liquid 
                    surface area of all degreasers at a stationary source 
                    as defined in Rule 210.1 "New and Modified Source 
                    Review", covered by this exemption is greater than 
                    0.93 m2 (10 ft2).

          IV.   Requirements

                A.  Cold Cleaner Requirements: any person who operates a
                    cold cleaner (degreaser) device shall conform to the
                    following operating requirements:

                    1.  General Operating Requirements

                        a.  The degreaser equipment and emission control
                            equipment shall be operated and maintained in
                            proper working order.

                        b.  Repair solvent leaks immediately, or shut down
                            and drain the degreaser.

                        c.  Do not remove or open any device designed to
                            cover the solvent unless processing work in the
                            degreaser or performing maintenance on the
                            degreaser.

                        d.  If a solvent flow is utilized, use only a
                            continuous fluid stream (not a fine, atomized,
                            or shower type spray) at a pressure which does
                            not cause liquid solvent to splash outside of
                            the solvent container.

                        e.  porous or absorbent materials such as cloth,
                            leather, wood, or rope shall not be degreased.
                  
                        f.  Do not store or dispose of any solvent,
                            including waste solvent and solvent residues, 
                            in such a manner as will cause or allow its
                            evaporation into the atmosphere.

                        g.  Waste solvent and waste solvent residues shall
                            be managed in compliance with California and
                            Federal requirements applicable to solid wastes,
                            hazardous wastes, or recyclable materials.

                        h.  Solvent agitation, where necessary, shall be
                            achieved only by pump circulation, or by means
                            of a mixer, or with ultrasonics.  Air agitation
                            shall not be used.

                        i.  Drain cleaned parts for at least 15 seconds
                            after cleaning or until dripping ceases.

                        j.  Solvent spraying shall be done at least 4 inches
                            below the top of the vapor layer.

                    2.  Cold Cleaners, except remote reservoir cold cleaners
                        shall be equipped with the following:

                        a.  A freeboard such that the freeboard ratio is
                            greater than or equal to 0.75;
             
                        b.  A container (degreaser) for the solvent and the
                            articles being cleaned;

                        c.  An apparatus or cover which prevents the solvent
                            from evaporating when not processing work in the
                            degreaser.  The cover must be designed so that
                            it can be opened and closed easily with one
                            hand;

                        d.  A facility for draining cleaned parts such that
                            the drained solvent is returned to the
                            container;

                        e.  If a high volatility solvent is used, then the
                            drainage facility must be internal, so that
                            parts are enclosed under the cover while
                            draining.  The drainage facility may be external
                            for applications where an internal type cannot
                            fit into the cleaning system;
            
                        f.  A permanent, conspicuous label which lists 
                            each of the operating requirements in
                            Subsection IV.A.1.;

                        g.  A permanent conspicuous mark locating the
                            maximum allowable solvent level which conforms
                            with the applicable freeboard requirement in
                            Subsection IV.A.2.a.

                    3.  Cold Cleaners, except remote reservoir cold
                        cleaners, shall not operate without one of the
                        following control devices:

                        a.  If a high volatility solvent is used, then one
                            of the following control devices shall be used:

                            1) A water cover if the solvent is insoluble 
                               in and heavier than water; or

                            2) Any other system of control demonstrated to
                               have emission control efficiency equivalent
                               to 85% overall control.

                        b.  If low volatility solvent is used, the 
                            freeboard height shall be at least 
                            six (6) inches.

                    4.  Remote reservoir cold cleaners shall be equipped
                        with the following:

                        a.  A cover for the drain when no work is being
                            processed in the degreaser and high volatility
                            solvent is used.  If low volatility solvent is
                            used, a drain cover is not required.

                        b.  A freeboard height of at least six (6) inches.

                        c.  A sink-like work area which is sloped
                            sufficiently towards the drain to preclude
                            pooling of solvent.

                        d.  Workplace fans shall not be used in a manner
                            which disturbs the air-vapor interface.

                        e.  A permanent, conspicuous label or sign
                            summarizing the applicable operating
                            requirements in Subsection IV.A.1.

                        f.  A permanent conspicuous mark locating the
                            maximum allowable solvent level which conforms
                            with the applicable freeboard requirement in
                            Subsection IV.A.4.a.

                B.  Open-Top Vapor Degreasers: Any person who operates a
                    open-top vapor degreaser shall conform to the following
                    requirements:

                    1.  General Operating Requirements:

                        a.  The degreaser equipment and emission control
                            equipment shall be operated and maintained in
                            proper working order.

                        b.  Repair solvent leaks immediately, or shut 
                            down and drain the degreaser.

                        c.  Do not remove or open any device designed to
                            cover the solvent unless processing work in 
                            the degreaser or performing maintenance on the
                            degreaser.

                        d.  If solvent flow is utilized, use only a
                            continuous fluid stream (not a fine, atomized,
                            or shower type spray) as a pressure which does
                            not cause liquid solvent to splash outside of
                            the solvent container.

                        e.  Porous or absorbent materials such as cloth,
                            leather, wood, or rope shall not be degreased.

                        f.  Do not store or dispose of any solvent,
                            including waste solvent and solvent residues, 
                            in such a manner as will cause or allow its
                            evaporation into the atmosphere.

                        g.  Waste solvent and waste solvent residues shall
                            be managed in compliance with California and
                            Federal requirements applicable to solid wastes,
                            hazardous wastes, or recyclable materials.

                        h.  Solvent agitation, where necessary, shall be
                            achieved only by pump circulation, or by means
                            of a mixer, or with ultrasonics.  Air agitation
                            shall not be used.

                        i.  Work loads shall not occupy more than half of
                            the degreaser's open top area.

                        j.  Solvent spraying shall be done at least 
                            4 inches below the top of the vapor layer.

                        k.  Water shall not be visually detectable in the
                            solvent returning from the water separator to
                            the solvent cleaner.

                        l.  For open-top vapor degreasers equipped with a
                            lip exhaust, the exhaust shall be turned off
                            when the degreaser is covered.

                        m.  Minimize solvent carry-out by the following
                            measures:

                            1.  Rack parts to allow complete drainage.

                            2.  Move parts in and out of the degreaser at
                                less than 3.3 m/min (2.2 inches/sec).

                            3.  Degrease the work load in the vapor zone
                                until condensation ceases.

                            4.  Allow parts to dry within the degreaser
                                until visually dry.

                            5.  Tip out any pools of solvent on the cleaned
                                parts before removal.

                        n.  If the unit is equipped with a refrigerated
                            freeboard chiller and/or a primary condenser,
                            the following procedures shall be followed:

                            1.  When starting up the degreaser, the cooling
                                system shall be turned on before, or
                                simultaneously with, the sump heater.

                            2.  When shutting down the degreaser, the sump
                                heater shall be turned off before, or
                                simultaneously with, the cooling system.

                        o.  Exhaust ventilation should not exceed 20 m3/min
                            per m2 (65 cfm/ft2) of degreaser open area,
                            unless necessary to meet OSHA requirements.
                            Ventilation fans shall not be positioned in 
                            such a way to disturb the vapor zone.

                    2.  Open-Top Vapor Degreasers shall be equipped with 
                        all of the following:

                        a.  A container (degreaser) for the solvent and 
                            the articles being cleaned.

                        b.  A freeboard ratio greater than or equal to 0.75.

                        c.  An apparatus or cover, which prevents solvent
                            from evaporating when not processing work in the
                            degreaser.  The cover shall be designed such
                            that it can be opened and closed easily without
                            disturbing the vapor zone.

                        d.  A facility for draining cleaned parts such 
                            that the drained solvent is returned to the
                            container.

                        e.  A permanent, conspicuous label which lists
                            each of the operating requirements in
                            Subsection IV.B.1.

                    3.  Open-Top Vapor Degreasers shall not operate 
                        without one of the following or a combination of 
                        the following major control devices:

                        a.  Condenser equipment where the chilled air
                            blanket temperature measured in degrees F at 
                            the coldest point on the vertical axis in the 
                            center of the solvent cleaner shall be either 
                            no greater than 30% of the initial boiling 
                            point, measured in degrees F, of the solvent 
                            used, or 41F.

                        b.  Enclosed design (cover or door opens only when
                            the dry part is actually entering or exiting 
                            the degreaser).

                        c.  A carbon adsorption system which ventilates
                            the air-vapor interface at a minimum rate of
                            15 m3/min per m2 (50 cfm/ft2), but not greater
                            than 20 m3/min per m2 (65 cfm/ft2), unless
                            required by OSHA standards, and exhausts less
                            than 25 ppm of solvent by volume over a complete
                            adsorption cycle, and with an overall capture
                            and control efficiency of 85%; or

                        d.  Any other system of emission control
                            demonstrated to have an overall capture and
                            control efficiency of at least 85%.

                    4.  Open-Top Vapor Degreaser shall include all of the
                        following safety switches:

                        a.  A condenser flow switch with a solvent
                            temperature indicator, except where non-water
                            refrigerant is used; a device which shuts off
                            the sump heat if either the condenser coolant
                            stops circulating or becomes warmer than
                            specified;

                        b.  A spray safety switch; and

                        c.  A manual reset vapor level thermostat with a
                            solvent temperature indicator.

                C.  Conveyorized Solvent Degreaser: Any person who operates
                    a conveyorized solvent degreaser shall conform to the
                    following requirements:

                    1.  General Operating Requirements:

                        a.  The degreaser equipment and emission control
                            equipment shall be operated and maintained in
                            proper working order.

                        b.  Repair solvent leaks immediately, or shut down
                            and drain the degreaser.

                        c.  If a solvent flow is utilized, use only a
                            continuous fluid stream (not a fine, atomized,
                            or shower type spray) as a pressure which does
                            not cause liquid solvent to splash outside of
                            the solvent container.

                        d.  Porous or absorbent materials such as cloth,
                            leather, wood, or rope shall not be degreased.

                        e.  Do not store or dispose of any solvent,
                            including waste solvent and solvent residues, 
                            in such a manner as will cause or allow its
                            evaporation into the atmosphere.

                        f.  Waste solvent and waste solvent residues shall
                            be managed in compliance with California and
                            Federal requirements applicable to solid wastes,
                            hazardous wastes, or recyclable materials.

                        g.  Solvent agitation, where necessary, shall be
                            achieved only by pump circulation, or by means
                            of a mixer, or with ultrasonics.  Air agitation
                            shall not be used.

                        h.  For conveyorized degreaser, minimize solvent
                            carryout by the following measures:

                            1.  Rack parts to allow complete drainage; and
            
                            2.  Maintain vertical conveyor speed at less
                                than 3.3 meters/min. (2.2 inches/sec).

                        i.  Exhaust ventilation should not exceed 20 m3/min
                            per m2 (65 cfm/ft2) of degreaser opening, 
                            unless necessary to meet OSHA requirements.  
                            Ventilation fans shall not be positioned in 
                            such a way to disturb the vapor zone.

                        j.  A down-time cover shall be placed over 
                            entrances and exists of conveyorized degreasers
                            immediately after the conveyor and exhaust are
                            shutdown and removed just before they are
                            started up.

                    2.  Conveyorized Degreasers shall be equipped with all
                        of the following:

                        a.  A container (degreaser) for the solvent and the
                            articles be cleaned.

                        b.  A freeboard ration greater than or equal to
                            0.75.

                        c.  An apparatus or cover, which prevents solvent
                            from evaporating when not processing work in 
                            the degreaser.  Covers shall be provided for 
                            closing off the entrance and exit during 
                            shutdown hours.

                        d.  A facility for draining cleaned parts such 
                            that the drained solvent is returned to the
                            container.

                        e.  For degreasers with greater than 2 m2 air/vapor
                            interface, a hood or enclosure with a delivery
                            or ductwork to collect degreaser emissions,
                            exhausting to a carbon adsorber or equivalent
                            control device.

                        f.  A permanent, conspicuous label which lists each
                            of the operating requirements in Section IV.C.1.

                    3.  Conveyorized Degreasers shall not operate without
                        one of the following or a combination of the
                        following major control devices:

                        a.  Condenser equipment where the chilled air
                            blanket temperature measured in degrees F at 
                            the coldest point on the vertical axis in 
                            center of the center of the solvent cleaner 
                            shall be either no greater than 30% of the 
                            initial boiling point, measured in degrees F, 
                            of the solvent used, or 41F.

                        b.  A carbon adsorption system which ventilates
                            the air-vapor interface at a minimum rate of
                            15 m3/min per m2 (50 cfm/ft2), but not greater
                            than 20 m3/min per m2 (65 cfm/ft2), unless
                            required by OSHA standards, and exhausts less
                            than 25 ppm of solvent by volume over a complete
                            adsorption cycle, and with an overall capture
                            and control efficiency of 85% by weight; or

                        c.  Any other system of emission control
                            demonstrated to have an overall capture 
                            and control efficiency equivalent to 85%.

                    4.  Conveyorized Degreaser shall include both the
                        following control devices:

                        a.  A drying tunnel or other means, such as a
                            rotating basket, sufficient to prevent cleaned
                            parts from carrying out solvent liquid or vapor;
                            and

                        b.  Minimized Opening: entrances and exits should
                            silhouette the work loads so that the average
                            clearance between parts and the edge of the
                            degrease opening is either less than 10 cm
                            (4 in.) or less than 10 percent of the width
                            of the opening, which ever is less.

                    5.  Conveyorized Degreaser shall be equipped with all 
                        of the following safety switches:

                        a.  A condenser flow switch with a solvent
                            temperature indicator, except where 
                            non-water refrigerant is used;

                        b.  A spray safety switch; and

                        c.  A manual reset vapor level thermostat with 
                            a solvent temperature indicator.

          V.    Administrative Requirements

                A.  Record Keeping:

                    1.  Any person subject to the requirements of this 
                        Rule shall have solvent manufacturer specification 
                        sheets available for review and shall maintain 
                        records which show on a quarterly basis, the 
                        following information for each degreaser:
                       
                        a.  Type of degreaser.

                        b.  Type of solvent.

                        c.  The solvent initial boiling point.

                        d.  Volume of solvent used.

                        e.  Volume of make-up solvent added to degreaser.

                    2.  Each time waste solvent or waste solvent residues
                        are removed from the facility, keep records
                        confirming compliance with the acceptable disposal
                        methods listed in Subsections IV.A.1.g, IV.B.1.g, 
                        or IV.C.1.f.

                    3.  Records shall be maintained for a minimum of
                        two years and made available for inspection to
                        the Control Officer upon request.

                B.  Test Methods:

                    The following test methods shall apply to this Rule.

                    1.  Initial boiling point of solvent shall be 
                        determined by ASTM 1078-78.

                    2.  Where add-on control equipment is utilized,
                        collection efficiency shall be determined by the 
                        EPA document "Model Regulatory Language for 
                        Capture Efficiency Testing" dated 8/3/90.

                    3.  Analysis of halogenated exempt compounds shall be 
                        by ARB Method 432.

                    4.  Determination of Emissions: Emissions of VOC shall
                        be measured by EPA Method 25, 25a, or 25b, as
                        applicable, and analysis of halogenated exempt
                        compounds shall be analyzed by ARB Method 422.

                    5.  Exhaust ventilation rates shall be measured by 
                        EPA Method 2, 2a, 2b, or 2c.

          VI.   Compliance Schedule

                A.  Any person who becomes subject to the requirements of
                    this Rule through loss of exemption shall comply with
                    the following increments of progress:

                    1.  By November 1, 1991, submit a complete application
                        for an Authority to Construct, if needed, to 
                        achieve compliance with this Rule.

                    2.  By November 1, 1992, be in full compliance with 
                        the requirements of this Rule.

                B.  Any person subject to the requirements of this Rule
                    prior to May 6, 1991, shall be in compliance with all
                    applicable requirements before January 1, 1980.