Washington Administrative Code
Title - Northwest Clean Air Agency
500 - REGULATED ACTIVITIES AND PROHIBITIONS
Sec2 580.3 - High Vapor Pressure Volatile Organic Compound Storage Tanks

Universal Citation: WA Admin Code 580.3

Current through Register Vol. 24-24, December 15, 2024

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 vapor recovery system.

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