(1) the tank has been retrofitted with an internal floating roof or equivalent control; and

(2) the vapor collection and vapor control systems are maintained and operated in such a way as to ensure the integrity and efficiency of the system.

(1) the tank has been fitted with a continuous rim-mounted secondary seal extending from the floating roof to the tank wall, or equivalent control;

(2) all seal closure devices meet the following requirements:

(3) the roof is to be floating on the liquid at all times, off the leg supports, except during initial fill and when the tank is completely emptied and subsequently refilled;

(4) all openings in the external floating roof, except automatic bleeder vents, rim space vents and leg sleeves, are equipped with projections into the tank that remain below the liquid surface at all times, and covers, seals or lids in the closed position except when the openings are in actual use;

(5) automatic bleeder vents are closed at all times except when the roof is floated off or landed on the roof supports or at the manufacturer's recommended setting;

(6) emergency roof drains are provided with slotted membrane fabric covers, or equivalent, which cover at least 90 percent of the area of the opening;

(7) an annual inspection is performed by the owner or his agent, including but not limited to, a visual inspection of the secondary seal;

(8) annual measurements of the secondary seal gap are performed by the owner or his agent when the floating roof is equipped with a vapor-mounted primary seal. Measurements will be made of the length and width of all gaps around the entire circumference of the secondary seal in each place where a one-eighth inch uniform diameter probe passes freely between the seal and tank wall, and summing the area of the individual gaps; and

(9) records are maintained of the dates and results of the annual inspections and annual secondary seal gap measurements required by this section.

(1) for submerged filling of gasoline transport vehicles;

(2) that for delivery of that gasoline to a gasoline-dispensing site required to be equipped with a stage I vapor collection device, the following requirements must be met:

(3) a vapor collection system required at a gasoline bulk plant consists of:

(4) the design of any connecting devices required by this Part to control gasoline vapor emissions while loading gasoline transport vehicles at a gasoline bulk plant must be standardized to provide compatibility between different bulk plants and transport vehicles; or connecting adapters must be provided and used. The owner or operator of the gasoline bulk plant is responsible for ensuring that the adapter is properly connected before dispensing gasoline. Connecting adapters must be adequate to ensure that the vapor collection system is vapor-tight.

(1) The gasoline vapor collection and control systems must capture gasoline vapors during loading and unloading of gasoline transport vehicles, and must condense, absorb, adsorb or combust the gasoline vapors so emissions do not exceed 0.67 pounds per 1,000 gallons of gasoline loaded or unloaded. Any equivalent control system is acceptable. Test methods to determine the level of gasoline vapors which are acceptable to the commissioner must be used to determine compliance with this standard. Test methods described in Appendix A of 40 CFR part 60 are considered to be acceptable methods (see table 1, section 200.9 of this Title).

(2) A vapor collection system required at a gasoline loading terminal consists of:

(1) For a fixed roof storage tank, the tank is equipped with an internal floating roof with a liquid-mounted primary seal and gasketed fittings, or equivalent control. Replacement of other than liquid mounted seals is to be performed when the tank is cleaned and gas-freed for other purposes.

(2) For an external floating roof tank, the tank must be equipped with the control equipments as follows:

(1) Facilities loading 15,000 gallons of gasoline or less per day must be equipped with and operate a vapor balance system or other control system. Such a vapor balance system must have no open operating system to the atmosphere during transfer and must not return the vapors to any tank equipped with a floating roof.

(2) Facilities loading more than 15,000 gallons of gasoline per day must be equipped with and operate a vapor control system which reduces the total VOC emissions to the outdoor atmosphere by 90 percent by weight.

(1) The commissioner may allow processes subject to this Part to operate with a lesser degree of control than what is required provided that a process specific reasonably available control technology (RACT) demonstration has been made to the satisfaction of the commissioner. Process specific RACT demonstrations must be submitted with the application for a permit to construct, a certificate to operate, or renewal of a certificate to operate for an existing source under the provisions of Part 201 of this Title. Such process specific RACT demonstrations must be submitted to the United States Environmental Protection Agency as a revision to the State Implementation Plan and must address the technical and economic feasibility of:

(2) Facilities with processes subject to this Part with an annual potential to emit less than five tons of volatile organic compounds will only be required to comply with subparagraph (1)(i) and (1)(iii) of this subdivision in order to demonstrate that a lesser degree of control is RACT for these processes.