RULE 3.9 ORGANIC LIQUID STORAGE AND TRANSFER (Adopted 6/91, Amended 6/2/14)


  1. GENERAL


    1. PURPOSE: The purpose of this rule is to limit emissions of volatile organic compounds from the storage and transfer of organic liquids.


    2. APPLICABILITY: This rule applies to any storage tank with a capacity of 250 gallons or greater that stores or transfers an organic liquid with a true vapor pressure of 1.5 psia or greater.


      For the purposes of this rule, the organic liquid’s true vapor pressure may be obtained from Table 1, provided that the actual storage temperature of the organic liquid does not exceed the corresponding maximum temperature listed in the table, or may be determined according to the test method specified in Section F.1.b, under actual storage conditions.


    3. SEVERABILITY: If a court of competent jurisdiction issues an order that any provision of this Rule is invalid, it is the intent of the District that other provisions of this Rule remain in full force and effect, to the extent allowed by law.


  2. EXEMPTIONS


    1. EXEMPTION – GASOLINE DISPENSING FACILITIES: The provisions

      of this Rule shall not apply to storage tanks at gasoline dispensing facilities subject to Rule 3.8


    2. EXEMPTION – SUBMERGED FILL PIPE: The provisions of Section

      D.1 shall not apply to floating roof tanks.


  3. DEFINITIONS


    1. DELIVERY VESSEL: Any cargo tank, tank truck, trailer, or railroad tank car that is designed and equipped to receive, transport, and deliver organic liquid.

    2. EXTERNAL FLOATING ROOF TANK: A storage tank equipped with a floating roof exposed to the atmosphere that floats on the surface of the stored liquid.


    3. FIXED ROOF TANK: A storage tank with a roof that is permanently affixed to the shell of the storage tank.


    4. GASOLINE: Any petroleum distillate or petroleum distillate/alcohol blend having a Reid vapor pressure of 4 pounds per square inch absolute or greater as determined by a method specified by test methods ASTM DM2879-97 (2007), ASTM D323-06, or ASTM D5191-07.


    5. GASOLINE BULK PLANT: Any gasoline loading facility where primary delivery of gasoline to a storage tank is other than by pipeline.


    6. GASOLINE DISPENSING FACILITY: Any stationary facility which receives gasoline from delivery vessels and dispenses gasoline directly into the fuel tanks of motor vehicles.


    7. INTERNAL FLOATING ROOF TANK: A storage tank equipped with a fixed roof and a floating roof that floats on the surface of the liquid being contained (but not necessarily in complete contact with it).


    8. LOADING FACILITY: Any organic liquid or gasoline loading rack or set of such racks that load organic liquid or gasoline into delivery vessels.


    9. ORGANIC LIQUID: Any liquid which contains any volatile organic compound or mixtures of volatile organic compounds with a true vapor pressure of 0.5 psia or greater under actual storage or loading conditions except liquefied petroleum gases.


    10. PRESSURE TANK: A storage tank that maintains working pressures sufficient at all times to prevent organic vapor or gas loss to the atmosphere, except under emergency conditions.


    11. REID VAPOR PRESSURE: The absolute vapor pressure of an organic liquid except liquefied petroleum gases, as determined in accordance with the test method specified in Section F.1.a.

    12. STORAGE TANK: Any container designed and equipped for storage of an organic liquid.


    13. SUBMERGED FILL PIPE:

      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.

      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.


    14. TRANSFER EQUIPMENT: All components of the liquid loading line between the liquid pump and the delivery vessel, and the vapor return line from the delivery vessel to the storage tank, or to and including the vapor recovery system.


    15. TRUE VAPOR PRESSURE: The equilibrium partial pressure exerted by an organic liquid as determined in accordance with the test method specified in Section F.1.b.


    16. VAPOR RECOVERY SYSTEM: Any vapor gathering system which is capable of collecting and returning discharged VOC vapors and gases during loading of organic liquids into cargo tanks or delivery vessels, back to a stationary storage tank, or into an enclosed process system.


    17. VAPOR TIGHT: A vapor leak of less than 10,000 ppm hydrocarbon concentration, as determined by EPA Reference Method 21, using an appropriate analyzer calibrated with methane.


  4. REQUIREMENTS


    1. SUBMERGED FILL PIPE: A person shall not transfer or permit the transfer of organic liquid into any stationary storage container with a capacity of 250 gallons or more unless such container is provided with a permanent submerged fill pipe.


    2. ORGANIC LIQUID STORAGE TANKS GREATER THAN 39,630 GALLONS

      CAPACITY: A person shall not store organic liquid in any

      stationary storage tank of more than 39,630 gallons (150,000 liters) capacity, unless such storage tank is a pressure tank or is designed and equipped with one of the

      vapor loss control devices specified in Sections D.3 or D.4.


    3. FLOATING ROOF TANKS: If the vapor loss control device used to comply with Section D.2 is a floating roof tank, the closure device shall meet the following requirements:


      1. Consist of two seals, one above the other; the one below shall be referred to as the primary seal, and the one above shall be referred to as the secondary seal.

      2. The true vapor pressure of the organic liquid stored in

        the tank is less than 11.0 psia under actual storage conditions as determined in accordance with the test

        method specified in Section F.1.b.

      3. The organic liquid is not visible above the floating

        roof.

      4. The floating roof is in contact with the liquid contents

      (but not necessarily in complete contact with it) at all times except when the storage tank is completely emptied, and subsequently refilled.


    4. VAPOR RECOVERY SYSTEM: If the vapor loss control device used to comply with Section D.2 is a vapor recovery system, such system shall collect and process all organic vapors and gases and meet the following requirements:


      1. The system shall have an abatement efficiency of at least 90% by weight as determined in accordance with the test methods specified in Section F.1.c, F.1.d, and F.1.e, as applicable.

      2. All piping, fittings, and pressure-vacuum relief valves

      associated with the fixed roof tank and the vapor recovery system shall be constructed and maintained in a vapor tight condition unless the pressure within the fixed roof tank exceeds the valve setting pressure.


    5. TRANSFER OF GASOLINE INTO DELIVERY VESSELS AT LOADING

      FACILITES: Any loading facility that transfers gasoline

      into a delivery vessel shall be equipped with a system that prevents at least 90% by weight of the gasoline vapors displaced from entering the atmosphere.


    6. OPERATING PRACTICES: Organic liquids subject to this rule shall not be discarded to public sewers, stored in open containers, or handled in any other manner that would result in evaporation to the atmosphere.

  5. ADMINISTRATIVE REQUIREMENTS


    1. RECORDKEEPING: The owner or operator subject to the requirements of this rule shall maintain accurate records to demonstrate compliance with the requirements of this rule for a period of at least 5 years and make such records available to the APCO upon request.


    2. RECORDKEEPING – TRANSFER OF OWNERSHIP: If a facility OR 25B: VOC emissions shall be

determined in accordance with EPA Method 25A, Determination of Total Gaseous Organic Concentration Using a Nondispersive Infrared Analyzer, calibrated with methane gas; or EPA Method 25A, Determination of Total Gaseous Organic Concentration Using a Flame Ionization Analyzer, calibrated with methane gas, as applicable.



TABLE 1:

Organic
Liquid
Reference
Properties
Not to Exceed Max.
Temperature (°F)
  (lbs/gal) (API) Point (°F) 1.5 psia
Kerosene---42.5350250
Diesel---36.4372290
Gas Oil---26.2390310
Stove Oil---23.0421340
Jet Fuel JP-1---43.1330230
Jet Fuel JP-3---54.711025
Jet Fuel JP-4---51.515068
Jet Fuel JP-5---29.6355250
Fuel Oil No. 2---36.4372290
Fuel Oil No. 3---26.2390310
Fuel Oil No. 4---23.0421340
Fuel Oil No. 5---19.9560465
Residual Fuel Oil---19-27------
Fuel Oil No. 6---16.2625---
Asphalt 60-100 pen.---------550
Asphalt 120-150 pen.---------500
Asphalt 200-300 pen.---------420
Acrylonitrile6.841.817362
Benzene7.427.717670
Carbon Disulfide10.622.111610
Carbon Tetrachloride13.4--17063
Chloroform12.5--14240
Cyclohexane6.549.717765
1,2 Dichloroethane10.5--18075
Ethyl Acetate7.523.617170
Ethyl Alcohol6.647.017385
Isopropyl Alcohol6.647.018195
Methyl Alcohol6.647.014862
Methyl Ethyl Ketone6.744.317565

STORAGE TEMPERATURE VERSUS PRODUCT TRUE VAPOR PRESSURE


Density
Gravity
Initial Boiling