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Section 580

VOLATILE ORGANIC COMPOUND CONTROL

580.1

The Board of Directors has noted the measurement of ozone concentrations (one hour ave.) nearing the Federal ambient standard at the northern and southern boundaries of the NWCAA jurisdiction. The expanding population and the presence of four large refineries contribute volatile organic compound (VOC) emissions to the atmosphere. Photochemically reactive VOC’s are precursors to ozone formation. In order to maintain the current attainment status for ozone, the Board has adopted specific measures to control VOC emissions. Reasonable Available Control Technology (RACT) is required for existing refinery operations, gasoline marketing, and in the use of cutback asphalt. RACT is defined as the lowest emission limit that a particular source is capable of meeting by the application of control that is reasonably available considering technological and economic feasibility.

DEFINITIONS

BOTTOM LOADING – Means the filling of a tank through a submerged fill line.

BULK GASOLINE PLANT – Means a gasoline storage and transfer facility that receives more than ninety percent of its annual gasoline throughput by transport tank, and reloads gasoline into transport tanks. See also “gasoline station” and “gasoline loading terminal.”

CERTIFIED VAPOR RECOVERY SYSTEM – Means a stage II vapor recovery system which has been certified by the California Air Resources Board.

CLOSED REFINERY SYSTEM – Means a disposal system that will process or dispose of those VOC collected from another system.

CUTBACK ASPHALT – Means an asphalt that has been blended with more than seven percent petroleum distillates by weight.

DISPOSAL SYSTEM – Means a process or device that reduces the mass quantity of the uncontrolled VOC emissions by at least ninety percent.

GASOLINE  – Means a petroleum distillate having a true vapor pressure greater than 28.0 kilopascals (kPa) (4 pounds per square inch absolute -p.s.i.a.) – at 20 degrees Celsius (20 C) temperature, that is a liquid at standard conditions of 102.9 Kpa (14.7 psi) and 20 C, and is used as a fuel for internal combustion engines.

GASOLINE STATION – Means any facility dispensing gasoline into fuel tanks of motor vehicles, from stationary storage tanks. See also “bulk gasoline plant” and “gasoline loading terminal.”

GASOLINE LOADING TERMINAL – Means a gasoline transfer facility that receives more than ten percent of its annual gasoline throughput solely or in combination by pipeline, ship or barge, and loads gasoline into transport tanks. See also “bulk gasoline plant” and “gasoline station.”

LEAK FREE – Means a liquid leak of less than four drops per minute.

PETROLEUM REFINERY – Means a facility engaged in producing gasoline, kerosene, distillate fuel oils, residual fuel oils, lubricants, asphalt, or other products by distilling crude oils or redistilling, cracking, extracting or reforming unfinished petroleum derivatives.

PROCESS UNIT – Means all the equipment essential to a particular production process.

PROPER ATTACHMENT FITTINGS – Means connecting hardware for the attachment of fuel transfer or vapor lines which meets or exceeds industrial standards or specifications and the standards of other agencies or institutions responsible for health and safety.

REID VAPOR PRESSURE – Means the true vapor pressure of volatile organic compounds at 37.8 degrees Celsius (100 degrees Fahrenheit) temperature.

STAGE II – Means gasoline vapor recovery during motor vehicle refueling operations from stationary tanks.

SUBMERGED FILL LINE – Means a pipe, tube, fitting or other hardware for loading liquid into a tank either a discharge opening flush with the tank bottom; or with a discharge opening entirely below the lowest normal operating drawoff level or that level determined by a liquid depth two and one half times the fill line diameter when measured in the main portion of the tank, but not in sumps or similar protrusions.

SUBMERGED LOADING – Means the filling of a tank with a submerged fill line.

SUITABLE CLOSURE or SUITABLE COVER – Means a door, hatch, cover, lid, pipe cap, pipe blind, valve or similar device that prevents the accidental spilling or emitting of VOC. Pressure relief valves, aspirator vents or other devices specifically required for safety and fire protection are not included.

TRANSPORT TANK – Means a container with a capacity greater than one thousand liters (260 gallons) used for transporting gasoline, including but not limited to, tank truck, tank trailer, railroad car, and metallic or nonmetallic tank or cell conveyed on a flatbed truck, trailer or railroad car.

THROUGHPUT – Means the amount of material passing through a facility.

TRUE VAPOR PRESSURE – Means the equilibrium partial pressure of an organic liquid (determined with methods described in American Petroleum Institute Bulletin 2517, “Evaporation Loss from Floating Roof Tanks,” 1962).

TURNAROUND or PROCESS UNIT TURNAROUNDS – Means the shutting down and starting up of process units for periodic major maintenance and repair of equipment, or other planned purpose.

UPGRADED – Means the replacement or modification gasoline storage tank(s) and/or piping system(s) that exceeds 50% of the replacement cost.

VAPOR BALANCE SYSTEM – Means a combination of pipes or hoses which create a closed system between the vapor spaces of an unloading tank and receiving tank such that the vapors displaced from the receiving tank are transferred to the tank being unloaded.

VAPOR BALANCING – Means use of a vapor balance system.

VAPOR RECOVERY SYSTEM – Means a process which prevents emission to the atmosphere of volatile organic compounds released by the operation of any transfer, storage, or process equipment.

VOLATILE ORGANIC COMPOUND or VOC – Means an organic compound that participates in atmospheric photochemical reactions. This excludes all compounds determined to have negligible photochemical reactivity by the U.S. Environmental Protection Agency and listed in 40 CFR 51.100(s).

WAXY, HEAVY POUR CRUDE OIL – Means a crude oil with a pour point of 10 C or higher (determined by the American Society for Testing and Materials Standard D97-66, “Test for Pour Point of Petroleum Oils”).

PASSED: December 13, 1989

AMENDED: April 14, 1993, October 13, 1994, February 8, 1996

 

SECTION 580.2 – Petroleum Refineries

580.21 This section shall apply to all petroleum refineries with a crude oil or feed stock capacity greater than three hundred eighteen thousand liters (2,000 barrels) per day. 580.22 It shall be unlawful for any person to cause or allow the disposal of VOC from the vacuum producing systems covered under this subsection except as follows:

580.221 Noncondensable VOC shall be piped to an appropriate firebox, incinerator or to a closed refinery system.

580.222 Hot wells associated with contact condensers shall be tightly covered and the collected VOC introduced into a closed refinery system.

580.23 It shall be unlawful for any person to cause or allow the operation of a wastewater separator with annual VOC emissions estimated by the NWCAA to exceed 25 tons, when such operation does not comply as follows:

580.231 Wastewater separator forebays shall incorporate a floating pontoon or fixed solid cover with all openings sealed totally enclosing the compartmented liquid contents, or a floating pontoon or a double deck-type cover equipped with closure seals between the cover edge and compartment wall. Collected vapors shall not be discharged to the atmosphere.

580.232 Accesses for gauging and sampling shall be designed to minimize VOC emissions during actual use. All access points shall be closed with suitable covers when not in use.

580.24 It shall be unlawful for any person to cause or allow a process unit turnaround which does not comply with the following conditions:

580.241 The VOC contained in a process unit to be depressurized for turnaround shall be introduced to a closed refinery system, combusted by a flare, or vented to a disposal system.

580.242 The VOC pressure in a process unit following depressurization for turnaround shall be less than five pounds per square inch gauge (psig) before venting to the ambient air.

580.243 The owner or operator shall keep a record of each process unit turnaround not in compliance with 580.242.

580.244 The owner or operator shall keep a record of each process unit turnaround listing the date the unit was shut down, the estimated vessel VOC concentration when the VOC was first emitted, and the estimated total quantity of VOC emitted.

580.25 Equipment for the reduction, collection or disposal of VOC shall be maintained and operated in a manner commensurate with accepted industrial practices.

580.26 Any petroleum refinery process unit, storage facility or other operation (including drains) subject to federal VOC or HAP standards (NSPS, Benzene Waste NESHAP, Petroleum Refinery NESHAP, etc.) is exempt from the requirements of NWCAA 580.3 through NWCAA 580.10. Such exemption shall take effect upon the date of required compliance with the federal standard.

PASSED: December 13, 1989

AMENDED: February 8, 1996

 

580.3 High Vapor Pressure Volatile Organic Compound Storage Tanks

580.31 Subsections 580.32 through 580.37 shall apply to all tanks which store volatile organic compounds with a true vapor pressure as stored greater than 10.5 kilopascals (Kpa) 1.5 pounds per square inch (psia),but less than 77.7 Kpa (11.1 psia) at calendar-month average storage temperatures and have a capacity greater than one hundred fifty thousand liters (40,000 gallons).

580.32 It shall be unlawful for any person to cause or allow storage of volatile organic compounds as specified in Section 580.31 unless each storage tank or container:

580.321 Meets the equipment specifications and maintenance requirements of the Federal Standards of Performance for New Stationary Sources -Storage Vessels for Petroleum Liquids (40 CFR 60, subpart Kb); or

580.322 Is retrofitted with a floating roof or internal floating cover using a metallic seal or a nonmetallic resilient seal at least meeting the equipment specifications of the Federal standards referred to in 580.321 of this subsection, or its equivalent; or 580.323 Is fitted with a floating roof or internal floating cover meeting be manufacturers equipment specifications in effect when it was installed.

580.33 All seals used with equipment subject to this section are to be maintained in good operating condition and the seal fabric shall contain no visible holes, tears or other openings.

580.34 All openings not related to safety are to be sealed with suitable closures.

580.35 Tanks used for the storage of gasoline in bulk gasoline plants and equipped with vapor balance systems as required in 580.52 shall be exempt from the requirements of this section.

580.36 All tanks not exempted by subsection 580.26 shall meet the monitoring, recordkeeping and reporting requirements of 40 CFR 60 Subpart Kb, with the exception of the monitoring report submittal requirements of 60.115b(b)(2). Compliance with subsection 580.36 shall be no later than December 31, 1999.

580.37 All tanks exempt by subsection 580.26 and all tanks subject to Section 580.3 or 580.9 shall be exempt from Section 560 of this Regulation.

580.38 All tanks storing volatile organic compounds with a true vapor pressure greater than 77.7 kPa (11.1 psia) shall be equipped with a vaporrecovery system.

PASSED: December 13, 1989

AMENDED: May 14, 1998, November 12, 1998

 

580.4 Gasoline Loading Terminals

580.41 Section 580.42 shall apply to all gasoline loading terminals with an annual gasoline throughput greater than twenty-seven million three hundred thousand liters (7,200,000 gallons).

580.42 It shall be unlawful for any person to cause or allow the loading of gasoline into any transport tank unless all the following conditions are met:

580.421 The loading terminal shall employ submerged loading or bottom loading and be equipped with a vapor control system.

580.422 All loading lines and vapor lines shall be equipped with vapor-tight fittings which close automatically upon disconnect. The point of closure shall be on the tank side of any hose or immediate connecting line.

580.423 All vapor return lines shall be connected between the transport tank and the vapor control system such that all displaced volatile organic compounds are vented to the vapor control system.

580.424 The vapor control system shall prevent the emission of at least 90 percent by weight of the volatile organic compounds and shall limit the emission of volatile organic compounds to no more than 10 milligrams per liter of gasoline transferred. Compliance shall be demonstrated biennially by conducting emission testing according to EPA Method 25 or another method approved by the Control Officer. Thirty days advance notification is required.

580.425 The vapor control system shall be equipped with an appropriate alarm system to alert personnel when the system is not in compliance with 580.424. Prior approval by the Control Officer is required.

580.426 All loading arms shall be designed, maintained and operated to prevent overfill, prevent fugitive liquid or vapor leaks, and prevent excess gasoline drainage during disconnect in accordance with the requirements of 580.10.

PASSED: December 13, 1989

AMENDED: June 14, 2001

 

580.5 Bulk Gasoline Plants

580.51 Section 580.5 shall apply to all gasoline bulk plants.

580.511 It shall be unlawful for any person to cause or allow the storage of gasoline in tanks with a capacity of two thousand one hundred liters (550 gallons) or greater unless such storage is in tanks meeting the following conditions:

580.5111 Each storage tank shall be equipped with a submerged fill line.

580.512 It shall be unlawful for any person to cause or allow transfer of gasoline between a storage tank and a transport tank except under the following condition:

580.5121 All transport tanks shall be submerged filled or bottom loaded.

580.52 Section 580.52 shall apply to all bulk gasoline plants with an annual gasoline throughput greater than seven million six hundred thousand liters (2,000,000 gallons).

580.521 It shall be unlawful for any person to cause or allow the storage of gasoline in tanks with a capacity of two thousand one hundred liters (550 gallons) or greater unless such storage is in tanks meeting the following conditions.

580.5211 Each storage tank shall be equipped for vapor balancing of gasoline vapors with transport tanks during gasoline transfer operations.

580.5212 The vapor line fittings on the storage tank side of break points with the transport tank vapor connection pipe or hose shall be equipped to close automatically upon planned or unintentional disconnect.

580.5213 The pressure relief valves on storage tanks shall be set at the highest possible pressure consistent with local and state codes for fire and safety.

580.522 Except as provided in 580.523 of this section, it shall be unlawful for any person to cause or allow the transfer of gasoline into or out of any transport tank at a bulk gasoline plant unless said transfer is in compliance with the following conditions:

580.5221 The transport tank shall be equipped with the proper attachment fittings to make vapor-tight connections for vapor balancing with storage tanks; and

580.5222 The vapor line fittings on the transport tank side of break points with the storage tank connection pipe or hose shall be equipped to close automatically upon planned or unintentional disconnect; and

580.5223 The pressure relief valves on transport tanks shall be set at the highest possible pressure consistent with local and state codes for fire and safety.

580.523 The vapor line fittings on the storage tank side of break points with the transport tank vapor connection pipe or hose shall be equipped to close automatically upon planned or unintentional disconnect.

580.5231 The transport tank is used exclusively for the delivery of gasoline into storage tanks of a facility exempt from the vapor balance requirements of 580.6; and

580.5232 The transport tank has a total capacity less than fifteen thousand liters (4,000 gallons) and is of a compartmented design and construction requiring the installation of four or more separate vapor balance fittings.

580.524 The pressure relief valves on storage tanks shall be set at the highest possible pressure consistent with local and state codes for fire and safety.

580.5241 The loading of all transport tanks, exempted under 580.523 of this section, shall be performed such that at least ninety percent by weight of the gasoline vapors displaced during filling are prevented from being released into the ambient air; providing that emissions from pressure relief valves shall not be included in the controlled emissions. This emission limitation will be met by vapor balancing in compliance with all provisions of this section.

580.525 It shall be unlawful for any person to cause or allow continued transfer of gasoline at any transfer point following occurrence of failure or leakage in any part of the vapor balance system, provided that occurrence of failure or leakage during loading or unloading of a transport tank shall not prevent the complete loading or unloading of the tank.

580.526 It shall be unlawful for any person to cause or permit the operation of a bulk gasoline plant or a transport tank without taking reasonable necessary measures to prevent the spilling, discarding in sewers, storing in open containers or handling of gasoline in a manner on the plant site that will result in evaporation to the ambient air.

580.53 Except as provided in 580.54 of this section, it shall be unlawful for any person to cause or allow the transfer of gasoline into or out of any transport tank at a bulk gasoline plant unless said transfer is in compliance with the following conditions:

580.531 The transport tank shall be equipped with the proper attachment fittings to make vapor-tight connections for vapor balancing with storage tanks; and

580.532 The vapor line fittings on the transport tank side of break points with the storage tank connection pipe or hose shall be equipped to close automatically upon planned or unintentional disconnect; and

580.533 The pressure relief valves on transport tanks shall be set at the highest possible pressure consistent with local and state codes for fire and safety.

580.54 Transport tanks used for gasoline shall be exempt from the requirement to be equipped with any attachment fitting for vapor balance lines, provided the following conditions are met:

580.541 The transport tank is used exclusively for the delivery of gasoline into storage tanks of a facility exempt from the vapor balance requirements of 580.6; and

580.542 The transport tank has a total capacity less than fifteen thousand liters (4,000 gallons) and is of a compartmented design and construction requiring the installation of four or more separate vapor balance fittings.

580.55 It shall be unlawful for any person to cause or allow transfer of gasoline between a storage tank and a transport tank except under the following conditions:

580.551 The loading of all transport tanks, except those exempted under 580.54 of this section, shall be performed such that ninety percent by weight of the gasoline vapors displaced during filling are prevented from being released into the ambient air; providing that emissions from pressure relief valves shall not be included in the controlled emissions. This emission limitation will be met by vapor balancing in compliance with all provisions of this section.

580.56 It shall be unlawful for any person to cause or allow continued transfer of gasoline at any transfer point following occurrence of failure or leakage in any part of the vapor balance system, provided that occurrence of failure or leakage during loading or unloading of a transport tank shall not prevent the complete loading or unloading of the tank.

580.57 It shall be unlawful for any person to cause or permit the operation of a bulk gasoline plant or a transport tank without taking reasonable necessary measures to prevent the spilling, discarding in sewers, storing in open containers or handling of gasoline in a manner on the plant site that will result in evaporation to the ambient air.

PASSED: February 14, 1990

 

580.6 Gasoline Dispensing Facilities

(A) NWCAA 580.6(B) shall apply to all gasoline dispensing facilities (GDF) with an annual 12-consecutive month gasoline throughput equal to or greater than 120,000 gallons.

(B) It shall be unlawful for any person to cause or allow the transfer of gasoline from any transport tank into any stationary storage tank, except as provided in NWCAA 580.6(C), unless all of the following conditions are met:

(1) Such stationary storage tank is equipped with a permanent submerged or bottom loading fill line and a vapor recovery system.

(2)  Vapor recovery system equipment, including, but not limited to, caps, adaptors, drain valves, and poppets, shall be installed and maintained to be vapor tight and in good working order.

(3) Such transport tank is equipped with a vapor balance system and is maintained in a vapor-tight condition in accordance with NWCAA 580.10.

(4) All vapor return lines are connected between the transport tank and the stationary storage tank and the vapor recovery system is functional and operating during loading.

(C) The following stationary gasoline storage tanks are exempt from the requirements of 580.6(A), (B), (D), and (F):

(1) All tanks with a capacity less than 2,000 gallons installed before January 1, 1990.

(2) All tanks with offset fill lines installed before January 1, 1990.

(3) All tanks with a capacity less than 264 gallons.

(D) Except for gasoline storage tanks specified in NWCAA 580.6(C), all gasoline tank vent pipes at gasoline dispensing facilities shall be equipped with properly functioning pressure vacuum vent (PV) caps.

(E)  All gasoline storage tanks at gasoline dispensing facilities shall be maintained in a vapor-tight condition and in good working order. This includes, but is not limited to, caps, adaptors, and drain valves.

(F)  All gasoline dispensing facilities that have Stage I vapor recovery shall conduct static pressure decay tests on all gasoline storage tanks, except those specified in NWCAA 580.6(C).

(1)  The static pressure decay tests shall be conducted on the following frequency unless more frequent testing is required by an Order of Approval or General Order of Approval:

GDF Throughput                                     Frequency

30,000 to 119,999 gal/yr                       Every 5 calendar years

120,000 to 1,200,000 gal/yr                Every 3 calendar years

> 1,200,000 gal/yr                                 Every calendar year

(2)  The pressure decay tests shall be conducted in accordance with California Air Resources Board (CARB) TP-201.3 (dated 7/26/12) for underground storage tanks and CARB TP-201.3B (dated 4/12/96) for above ground tanks, or test procedures that have been approved by CARB as equivalent.

(3)   Any person conducting a compliance test must be certified by the International Code Council or other association approved by the NWCAA in writing.

(4)   Failed Compliance Tests. If the defective gasoline dispensing facility equipment cannot be repaired within 14 calendar days of failing a test, the owner or operator must stop receiving and/or dispensing gasoline from the defective equipment until it is repaired and retested, and passes all required compliance tests.

(5)  Test Reports

(a) The owner or operator shall submit a written test report to the NWCAA within 30 calendar days after the testing has been completed that includes the following information:

(i)     Identification of the facility,

(ii)     Name and address of the person(s) who conducted each test,

(iii)    Current certification credential information for each person who conducted each test,

(iv)    Date of each test,

(v)    Equipment tested,

(vi)    Test procedures or methods used,

(vii)   Results of each test conducted (pass/fail), and

(viii)   Any maintenance, repairs, or corrective actions taken necessary to pass the tests.

(b)       Owners or operators shall keep a copy of all test reports on-site for at least 5 years after the date of testing that shall be made available for inspection upon request.

PASSED: February 14, 1990 AMENDED: April 14, 1993, October 13, 1994, March 13, 1997, May 14, 1998, November 12, 1998, September 13, 2018

 

580.7 Cutback Asphalt Paving

580.71 After June 1, 1990, it shall be unlawful for any person to cause or allow the use of cutback asphalt in paving during the months of June, July, August and September, except as provided for in 580.72 of this section.

580.72 The following paving uses and applications of cutback asphalts are permitted during all months of the year;

580.721 As a penetrating prime coat on aggregate bases prior to paving.

580.722 The manufacture of patching mixes used exclusively for pavement maintenance and needed to be stockpiled for times longer than one month.

580.723 All paving uses when the temperature during application is below 10 °C (50 °F).

PASSED: December 13, 1989

AMENDED: April 14, 1993

 

580.8 Petroleum Refinery Equipment Leaks

580.81 This section shall apply to all components (pump seals, compressor seals, pipeline valves and relief valves) handling volatile organic compounds at petroleum refinery process units and loading sites which utilize butane or lighter hydrocarbons as a primary feedstock. The process units shall include alkylation, polymerization, and LPG loading. This section does not apply to systems or facilities in which or to which natural gas or refinery fuel gas are supplied.

580.82 It shall be unlawful to install or operate a sample point at the end of a pipe or line containing VOC unless the pipe or line is sealed with a second suitable closure. Exceptions to this requirement are the ends of a pipe or line connected to pressure relief valves, aspirator vents or other devices specifically required to be open for safety protection. The sealing device shall be removed only when a sample is being taken or during maintenance operations.

580.83 It shall be unlawful for any person to cause or allow the operation of a petroleum refinery unless such person conducts a fugitive leak detection and repair program for process units specified in 580.81 and 580.82 consistent with the provisions of 40 CFR 60.591-60.593. Where compliance with 40 CFR 60.591-60.593 results in any expansion of a facilities current LDAR program or modification of an existing facility, the date of applicability for the new portion of the program shall be August 31, 1998.

580.84 Pressure relief devices that are connected to an operating flare header, vapor recovery device, inaccessible valves, storage tank valves and valves that are not externally regulated are exempt from the monitoring requirements of this Section.

PASSED: December 13, 1989

AMENDED: March 13, 1997

 

580.9 High Vapor Pressure Volatile Organic Compound Storage in External Floating Roof Tanks

580.91 This section shall apply to all VOC storage vessels equipped with external floating roofs, having capacities greater than 150,000 liters (40,000 gallons). Compliance with this section shall be achieved by December 31, 1999.

580.92 This section does not apply to storage vessels that:

580.921 Are used to store waxy, heavy pour crude oil;

580.922 Have capacities less than 1,600,000 liters (420,000 gallons) and are used to store produced crude oil and condensate prior to lease custody transfer;

580.923 Contain a volatile organic compound with a true vapor pressure of less than 10.5 kPa (1.5 psia);

580.924 Contain a volatile organic compound with a true vapor pressure less than 27.6 kPa (4.0 psia), are of welded construction, and presently possess a metallic-type shoe seal, a liquid-mounted foam seal, a liquid-mounted liquid fill type seal, or other equivalent closure device approved by the Control Officer; or

580.925 Are of welded construction, equipped with a metallic-type shoe primary seal and have a shoe-mounted secondary seal.

580.93 It shall be unlawful for any person to store a volatile organic compound in a vessel subject to this section unless the vessel has been fitted with a rim-mounted secondary seal or an equivalent closure device approved by the Control Officer.

580.94 All seals or closure devices required by 580.93 shall meet the following requirements:

580.941 There must be no visible holes, tears, or other openings in the seal or seal fabric;

580.942 The seal shall be intact and uniformly in place around the circumference of the floating roof between the roof and the tank wall; and

580.943 For vapor mounted primary seals, the accumulated area of gaps exceeding 0.32 cm (1/8 inch) in width between the secondary seal and the tank wall shall not exceed 21.2 cm2 per meter of tank diameter (1.0 in 2 per foot of tank diameter).

580.95 All openings in the external floating roof, except for automatic bleeder vents, rim space vents, and leg sleeves shall be:

580.951 Equipped with covers, seals, or lids in the closed position except when the openings are in actual use; and

580.952 Equipped with projections into the tank which remain below the liquid surface at all times.

580.96 Automatic bleeder vents shall be closed at all times except when the roof is floated off or landed on the roof leg supports;

580.97 Rim vents shall be set to open when the roof is being floated off the leg supports or at the manufacturer’s recommended setting;

580.98 Emergency roof drains shall be provided with slotted membrane fabric covers or equivalent which cover at least ninety percent of the area of the opening.

580.99 Routine inspections shall be performed as follows:

580.991 Conduct a semi-annual visual inspection of the secondary seal gap;

580.992 Measure the secondary seal gap annually if the floating roof is equipped with a vapor-mounted primary seal; and

580.993 Maintain records of the types of petroleum liquids stored, the maximum true vapor pressure of the liquid as stored, and the results of any inspections performed for period of two years after the date on which the record was made.

580.994 A person proposing to measure the seal fit of a storage vessel in order to comply with this section shall notify the Control Officer of the intent to measure not less than five working days before the measurement so the Control Officer may at his option observe the measurement.

580.100 It shall be unlawful for any person to store a volatile organic compound in a vessel with an external floating roof exempted from this section by 580.924, but containing a volatile organic compound with a true vapor pressure greater than 10.5 kPa (1.5 psia) unless records of the average monthly storage temperature, the type of liquid and the maximum true vapor pressure of such liquids are maintained.

PASSED: December 13, 1989

 

580.10 Leaks From Gasoline Transport Tanks and Vapor Control Systems

580.101 Applicability This Section shall apply to all gasoline transport tanks and all facilities subject to 580.4, 580.5, and 580.6 of the Northwest Clean Air Agency Regulation.

580.102 Transport Tanks (also referred to as cargo tanks) It shall be unlawful for any person to cause or allow the transfer of gasoline between a facility subject to the requirements of this Section and a gasoline transport tank unless:

580.1021 a current (within 365 days) vapor tightness test certification for the transport tank is on file with the facility or is available in the transport vehicle.

(a) The vapor tightness test shall be conducted annually in accordance with the procedures specified in 40 CFR 63.425(e) and;

(b) The complete vapor tightness certificate shall be on a form approved by the Northwest Clean Air Agency.

580.1022 It is loaded and unloaded in such a manner that the concentration of gasoline vapors is below the lower explosive limit (expressed as propane) at all points a distance of 2.5 cm (1 inch) or greater from any potential leak source. Any transport tank which fails to meet the requirements of this subparagraph shall be repaired and retested in accordance with 40 CFR 63.422(c) prior to reloading.

580.103 Vapor Control Systems It shall be unlawful for any person to cause or allow the operation of any facility subject to this Section unless the vapor control system and the gasoline loading equipment is operated during all loading and unloading of gasoline such that:

580.1031 The concentrations of gasoline vapors is below the lower explosive limit (expressed as propane) at all points a distance of 2.5 cm (1 inch) or greater from any potential leak source; and

580.1032 There are no liquid leaks in excess of three drops per minute and there is no more than 10 ml of liquid drainage per disconnect.

PASSED: December 13, 1989

AMENDED: November 12, 1999

 

SECTION 580.11 Scope, Registration, Reporting and Notice of Construction

580.111 The owner or operator of a stationary emission source of VOC shall notify the NWCAA and register the source in compliance with Sections 300, 320, 321, 324.

580.112 The owner or operator of a registered stationary emission source of VOC shall furnish, upon request of the Control Officer, such data as the NWCAA may require to calculate the emission of the source and evaluate the emission control program; and such other data at times as may be required by the Control Officer. The data shall be supplied not later than (60) sixty days following the request, in a form and according to instructions received from the Control Officer.

580.113 Owners or operators of stationary emission sources of VOC, as defined in Section 580, shall demonstrate compliance with these regulations, using procedures approved by the Control Officer. These procedures shall comply with established EPA/DOE/CARB Reference Testing Methods. Where source sampling is required, procedures shall be used as specified in Section 180 of the NWCAA Regulation.

580.114 The owner or operator of any source of VOC emissions subject to the provisions of Section 580 shall:

580.1141 Install, operate, and maintain, process and/or control equipment, monitoring instruments or procedures as necessary to comply with paragraph 580.113 of this section; provided that use of Monitoring instruments or procedures is required only as specified in EPA/DOE/CARB Documents cited in subsection 580.113.

580.1142 Maintain, in writing, records and/or reports relating to monitoring instruments or procedures which will, upon review, document the compliance status of the VOC emission source or control equipment to the satisfaction of the Control Officer. Reports shall be forwarded to the Control Officer as required by procedures cited in 580.113. For sources subject to 580.6 and 580.7, no records or reports are required.

580.1143 The provisions of the NWCAA Regulation regarding Notices of Construction shall apply to new or altered VOC emission source, and no person shall construct, install, or establish a new or altered VOC emission source except in compliance therewith.

PASSED: December 13, 1989

AMENDED: March 13, 1997