(a) For all affected persons in the Beaumont-Port Arthur, Bexar County, Dallas-Fort Worth, El Paso, and Houston-Galveston-Brazoria areas, as defined in §115.10 of this title (relating to Definitions), the following control requirements shall apply.(1) Volatile organic compound (VOC) emissions from petroleum refineries shall be controlled during process unit shutdown or turnaround with the following procedure:(A) recover and store all pumpable or drainable liquid; and(B) reduce vessel gas pressure to 5.0 pounds per square inch gauge (psig) (34.5 kPa gauge) or less by recovery or combustion before venting to the atmosphere.(2) Vent gas streams affected by §115.311(a) of this title (relating to Emission Specifications) must be controlled properly with a control efficiency of at least 90% or to a VOC concentration of no more than 20 parts per million by volume (ppmv) (on a dry basis corrected to 3.0% oxygen for combustion devices):(A) in a direct-flame incinerator at a temperature equal to or greater than 1,300 degrees Fahrenheit (704 degrees Celsius);(B) in a smokeless flare; or(C) by any other vapor control system, as defined in §115.10 of this title (relating to Definitions).(3) In the Houston-Galveston-Brazoria area, the following are subject to the requirements of Subchapter H of this chapter (relating to Highly-Reactive Volatile Organic Compounds) in addition to the applicable requirements of this division (relating to Process Unit Turnaround and Vacuum-Producing Systems in Petroleum Refineries):(A) any vent gas stream which is subject to §115.311(a) of this title and which includes a HRVOC, as defined in §115.10 of this title; and(B) any process unit shutdown or turnaround of a unit in which a HRVOC is a raw material, intermediate, final product, or in a waste stream.(b) For all affected persons in Gregg, Nueces, and Victoria Counties, the following control requirements shall apply.(1) VOC emissions from petroleum refineries shall be controlled during process unit shutdown or turnaround with the following procedure:(A) recover and store all pumpable or drainable liquid; and(B) reduce vessel gas pressure to five psig (34.5 kPa gauge) or less by recovery or combustion before venting to the atmosphere.(2) Vent gas streams affected by §115.311(b) of this title must be controlled properly with a control efficiency of at least 90% or to a VOC concentration of no more than 20 ppmv (on a dry basis corrected to 3.0% oxygen for combustion devices):(A) in a direct-flame incinerator at a temperature equal to or greater than 1,300 degrees Fahrenheit (704 degrees Celsius);(B) in a smokeless flare; or(C) by any other vapor control system, as defined in §115.10 of this title.