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Title 18 . Environmental Conservation
Chapter 50 . Administrative Enforcement
Section 85. Volatile liquid storage tank emission standards

18 AAC 50.085. Volatile liquid storage tank emission standards

(a) The owner, operator, or permittee of a volatile liquid storage tank located in the Port of Anchorage that has a volume of 9,000 barrels (378,000 gallons) or more shall reduce organic vapors emitted to the atmosphere by using

(1) an internal floating roof installed before June 1, 1992;

(2) an internal floating roof that meets the specifications of 40 C.F.R. 60.112b(a)(1), adopted by reference in 18 AAC 50.040;

(3) a closed vent system and control device that collects and reduces organic vapors emitted to the atmosphere by at least 95 percent (six-hour average), as specified in the department's Air Quality Compliance Certification Procedures for Volatile Liquid Storage Tanks, Delivery Tanks, and Loading Racks, adopted by reference in 18 AAC 50.030; or

(4) a system that the department determines is as effective as those described in (2) or (3) of this subsection, using procedures in the document referred to in (3) of this subsection.

(b) The owner, operator, or permittee of a volatile liquid storage tank with an internal floating roof described in (a)(1) of this section shall reduce organic vapors emitted to the atmosphere by modifying the seals and fittings to meet the specifications of 40 C.F.R. 60.112b(a)(1), adopted by reference in 18 AAC 50.040, no later than the first time after June 1, 1995 that the tank is emptied and degassed.

(c) The owner, operator, or permittee of a volatile liquid storage tank that is located in the Port of Anchorage, that has a volume equal to or greater than 952 barrels (40,000 gallons) but less than 9,000 barrels (378,000 gallons), and that is not equipped with a control device described in (a)(1) - (4) of this section, shall, no later than the first time on or after June 1, 1995 that the tank is emptied and degassed, reduce organic vapors emitted to the atmosphere by installing conservation vents on the tank as specified in the document referred to in (a)(3) of this section.

(d) When conducting source testing, the department will, and the owner, operator, or permittee shall, use the procedures specified in the document referred to in (a)(3) of this section to determine compliance with this section. In accordance with those procedures, the owner, operator, or permittee of a volatile liquid storage tank subject to this section shall

(1) periodically inspect air pollution control equipment;

(2) repair any deficiencies detected;

(3) report to the department the results of all inspections and repairs; and

(4) keep records of those inspections and repairs for at least five years.

History: Eff. 1/18/97, Register 141

Authority: AS 46.03.020

AS 46.14.010

AS 46.14.020

AS 46.14.030

Sec. 30, ch. 74, SLA

1993

Editor's note: A complete description of the Port of Anchorage is in the state air quality control plan adopted by reference in 18 AAC 50.030.


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Last modified 7/05/2006