SACAQMD RULE 448 GASOLINE TRANSFER INTO STAT. STORAGE CONT.       
LAST REVISED 02/02/95





       RULE 448 GASOLINE TRANSFER INTO STATIONARY STORAGE CONTAINERS
                              Adopted 2-5-75
            (Amended 9-15-75, 8-3-77, 9-2-80, 12-17-91, 2-2-95)

                                   INDEX

100 GENERAL
    101  PURPOSE
    110  EXEMPTION, IMPLEMENTS OF HUSBANDRY

200 DEFINITIONS
    201  BACKGROUND
    202  EXISTING VAPOR RECOVERY SYSTEMS
    203  GASOLINE
    204  GASOLINE VAPORS
    205  LEAK FREE
    206  NEW VAPOR RECOVERY SYSTEM    
    207  PURGE
    208  SUBMERGED FILL PIPE
    209  VAPOR TIGHT

300 STANDARDS
    301  VAPOR RECOVERY REQUIRED
    302  DELIVERY VESSELS
    303  OTHER EQUIPMENT REQUIREMENTS
    304  PRESSURE VACUUM VALVE REQUIREMENT

400 ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)


500 MONITORING AND RECORDS 
    501 TESTING PROCEDURE


100 GENERAL

    101  PURPOSE: To limit emissions resulting from the transfer of
         gasoline into stationary storage containers.

    110  EXEMPTION: IMPLEMENTS OF HUSBANDRY: The provisions of this
         rule shall not apply to the transfer of gasoline into any
         stationary container which is used primarily for the
         fueling of implements of husbandry as such vehicles are
         defined in Division 16 (Section 36000 et seq) of the
         California Vehicle Code, if such container is equipped with
         a permanent submerged fill pipe.

200 DEFINITIONS

    201  BACKGROUND: A reading as methane on a portable hydrocarbon
         detection instrument which is determined at least three (3)
         meters upwind from the affected device to be inspected and
         uninfluenced by any specific emission point.

    202  EXISTING VAPOR RECOVERY SYSTEM: A vapor recovery system for
         which the owner or operator has received an Authority to
         Construct or a Permit to Operate on or before February 2,
         1995.

    203  GASOLINE: Any petroleum distillate having a Reid vapor
         pressure of 4 pounds per square inch or greater as
         determined by a method specified in Section 501.1.

    204  GASOLINE VAPORS: Organic compounds in the displaced vapors
         including any entrained liquid gasoline.

    205  LEAK FREE: A liquid leak of less than three drops per
         minute.

    206  NEW VAPOR RECOVERY SYSTEM: A vapor recovery system for
         which the owner or operator receives an Authority to
         Construct after February 2, 1995.

    207  PURGE: To release gasoline vapors, gases, or hydrocarbon
         vapors to the atmosphere from a delivery vessel by
         introduction of air or an inert gas.

    208  SUBMERGED FILL PIPE:
         208.1   Top Loading:  Any fill pipe which has the discharge
                 opening entirely submerged when the liquid level is
                 6 inches above the bottom of the tank.
         208.2   Side Loading: Any fill pipe which has the discharge
                 opening entirely submerged when the liquid level is
                 18 inches above the bottom of the tank.

    2079 VAPOR TIGHT:  A condition under which the
         concentration of total organic compounds, measured
         0.4 inch (1 centimeter) from any source, does not
         exceed 10,000 ppm (expressed as propane) above
         background, as determined by a method specified in
         Section 501.2.

300 STANDARDS

    301  VAPOR RECOVERY REQUIRED:  A person shall not transfer, or
         permit the transfer of, gasoline from any tank truck or
         trailer into any stationary storage container with a
         capacity of 250 gallons or more unless such container is
         provided with a permanent submerged fill pipe and unless
         such transfer is made under one of the following
         conditions:
         301.1   The displaced gasoline vapors or gases are processed
                 by a vapor recovery system that shall prevent
                 emission to the atmosphere of at least 95%, by
                 weight, of the gasoline vapors displaced from the
                 storage container during the transfer of gasoline
                 into the container.  The vapor recovery system may
                 collect displaced vapors for reprocessing or
                 destruction and it must be certified by the
                 California Air Resources Board.
         301.2   Transfer is made to a storage container equipped as
                 described in Rule 446.

    302  DELIVERY VESSELS:  A person shall not store gasoline in, or
         otherwise use, or operate any gasoline delivery vessel
         unless such vessel and attendant equipment is designed and
         maintained to be leak free and vapor tight. 
         302.1   A person shall not purge gasoline vapors, gases, or
                 hydrocarbon vapors from a delivery vessel to the
                 atmosphere.

    303  OTHER EQUIPMENT REQUIREMENTS:  A person shall not load,
         transfer or store gasoline in any stationary storage
         container with a capacity of 250 gallons or more, unless:
         303.1   The storage container is equipped with vapor tight
                 caps on the fill and vapor adapters.
         303.2   The vapor adapter or space is equipped with a dry
                 break which provides a vapor tight seal.
         303.3   The coaxial fill tube has a functioning spring
                 mechanism which causes the dry break to form a vapor
                 tight seal.

    304  PRESSURE VACUUM VALVE REQUIREMENT:
         304.1   By February 2, 1996, any person operating an
                 existing vapor recovery system shall have a pressure
                 vacuum valve installed on all open vents with a
                 minimum pressure setting of 3.0   inches of H2O.
                 The pressure vacuum valve shall have a minimum
                 vacuum setting of 8.0  2.0 inches of H2O.
         304.2   Prior to receiving a permit to operate, the operator
                 of any new vapor recovery system shall have a
                 pressure vacuum valve installed on all vent pipes
                 open to the atmosphere with a minimum pressure
                 setting of 3.0   inches of H2O.  The pressure
                 vacuum valve shall have a minimum vacuum setting of
                 8.0  2.0 inches of H2O.

400  ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)


500 MONITORING AND RECORDS

    501  TESTING PROCEDURE:
         501.1   VAPOR PRESSURES:  Vapor pressures may be obtained
                 from standard reference texts or may be determined
                 by ASTM D-2879-83 or ASTM D-323-82.  A violation by
                 any method is a violation of the rule.
         501.2   VAPOR TIGHT:  EPA Reference Method 21 or California
                 Air Resources Board Test Method 2-6 shall be used to
                 determine vapor tight condition.  A violation by
                 either method is a violation of the rule.