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Express Terms 6 NYCRR Part 226 Solvent [Metal] Cleaning Processes and Industrial Cleaning Solvents

Subpart 226-1 Solvent Cleaning Processes

Section 226-1.1 Applicability

(a) Applicability. This Subpart applies to all owners or operators of facilities who operate cold cleaners (including remote reservoir cold cleaning machines), open-top vapor degreasers, and all types of conveyorized degreasers that carry out solvent cleaning processes of metal objects using a solution containing volatile organic compounds (VOCs). After December 1, 2020, applicability is expanded to include such cleaning of non-metal objects.

[Section 226.1] Section 226-1.2 Definitions.

(a) To the extent that they are not inconsistent with the specific definitions in subdivision (b) of this [section] Subpart, the general definitions of Part 200 of this Title apply.

(b) For the purposes of this [Part] Subpart, the following specific definitions also apply:

(1) 'Cold cleaning degreasing.' Batch process of solvent [metal] cleaning, with liquid solvent, by spraying, brushing, flushing or immersion while maintaining the solvent below its boiling point. Wipe cleaning is not included in this definition.

(2) 'Conveyorized degreasing.' Continuous process of solvent [metal] cleaning by operating with either cold or vaporized solvents.

(3) 'Degreaser.' Any solvent [metal] cleaning machine used to perform cold cleaning degreasing, remote reservoir degreasing, conveyorized degreasing, or open top vapor degreasing.

(4) 'Freeboard height.' Distance from the top of the vapor zone to the top of the degreaser tank. On cold cleaners, it is the distance from liquid level to lip of tank.

(5) 'Freeboard ratio.' Freeboard height divided by the interior width of the degreaser tank.

(6) 'Open top vapor degreasing.' Process of solvent [metal] cleaning by condensing hot solvent vapor on the colder metal parts.

(7) 'Remote reservoir degreasing.' Cold cleaning degreasing performed in a device in which liquid solvent is pumped to a sink like work area, where the [metal] parts are cleaned, and then drains back into an enclosed container allowing no solvent to pool in the work area.

(8) 'Solvent [metal] cleaning.' Process of cleaning soils from [metal] surfaces by using a volatile organic compound (VOC).

(9) 'Special and extreme solvent [metal] cleaning.' The use of degreasers:

(i) to clean [metal] parts in the manufacturing and rework of electronic parts, assemblies, boxes, wiring harnesses, sensors and connectors used in aerospace service;

(ii) to clean [metal] parts used in the manufacturing of ozone, nitrous oxide, fluorine, chlorine, bromine, halogenated compounds, or oxygen in concentrations greater than 23 percent; or

(iii) to clean [metal] parts exposed to ozone, nitrous oxide, fluorine, chlorine, bromine, halogenated compounds, or oxygen in concentrations greater than 23 percent.

[Section 226.2] Section 226-1.3 General requirements.

[A person] Owners or operators conducting solvent [metal] cleaning processes must:

(a) store solvent in covered containers and transfer or dispose of waste solvent in such a manner that less than 20 percent of the waste solvent (by weight) can evaporate into the atmosphere;

(b) maintain equipment to minimize leaks and fugitive emissions;

(c) display at the equipment location a conspicuous summary of proper operating procedures consistent with minimizing emissions of VOCs;

(d) keep the degreaser cover closed except when parts are being placed into or being removed from the degreaser, the cover needs to be open in order to add or remove solvent from the degreaser, no solvent is in the degreaser, or manually cleaning metal parts in a cold cleaning degreaser;

(e) create and maintain a record of solvent consumption for five years. This record must be retained for five years and made available to the department upon request.

(f) not clean sponges, fabric, wood, leather, paper products and other absorbent materials in a degreaser; and

(g) if using a cold cleaning degreaser that is subject to section 226[.3]-1.3(a)(4) of this Part, retain a record of the following three items for five years and provide these records to the department upon request. An invoice, a bill of sale, a certificate covering multiple sales, a material safety data sheet (MSDS), or other appropriate documentation acceptable to the department may be used to comply with this requirement:

(1) the name and address of the solvent supplier;

(2) the type of solvent including the product or vendor identification number; and

(3) the VOC content of the cleaning solution in grams per liter (gm/l) or the vapor pressure of the solvent measured in mm Hg at 20°C (68°F) as appropriate to verify compliance.

[Section 226.3] Section 226-1.4 Equipment specifications and control requirements.

Except as otherwise permitted by the department pursuant to section 226-1.5 of this Part, the following types of control [equipment] requirements must be used by a [person] owner or operator conducting solvent [metal] cleaning:

(a) 'Cold cleaning degreasing when the internal volume of the machine is greater than two gallons.'

(1) A cover which can be operated easily.

(2) An internal drainage facility (under cover), if practical.

(3) A control system that limits VOC emissions to those achievable with equipment having a freeboard ratio greater than or equal to 0.5, or a water cover when the solvent is insoluble in and heavier than water. Remote reservoir degreasers are exempt from this requirement.

(4) [Solvent with] Cleaning solution with a maximum VOC content of 25 grams per liter at 20°C; prior to December 1, 2020 a cleaning solution with a vapor pressure of 1.0 mm Hg, or less, at 20°C may be used to demonstrate compliance with this subdivision. [Prior to January 1, 2004, compliance with this requirement is not mandatory if compliant solvents are not readily available. On or after January 1, 2004, the person conducting solvent metal cleaning covered by this subdivision must use compliant solvents or have submitted a process specific RACT demonstration pursuant to section 226.5 of this Part.] This paragraph does not apply to degreasers:

(i) used in special and extreme solvent metal cleaning;

(ii) for which the owner or operator has received department approval of a demonstration that compliance with the requirement of a cleaning solution with a maximum VOC content of 25 grams per liter at 20°C, or [solvent] with a vapor pressure of 1.0 mm Hg, or less, at 20°C will result in unsafe operating conditions; or

(iii) that are located in a permanent total enclosure having control equipment that is designed and operated with an overall VOC removal efficiency of 90 percent or greater.

(b) 'Open top vapor degreasing.'

(1) A cover which can be operated easily without disturbing the vapor zone.

(2) Safety switches which shut off the sump heat if the condenser malfunctions and shall shut off the pump if the vapor level drops excessively.

(3) One of the following:

(i) a freeboard ratio that is greater than or equal to 0.75, and a powered or mechanically assisted cover if the top opening is greater than 10 square feet;

(ii) a refrigerated chiller; or

(iii) local exhaust ventilation and a carbon adsorption unit, or an equivalent system, for collection of VOCs.

(c) 'Conveyorized degreasing.'

(1) One of the following:

(i) a refrigerated chiller; or

(ii) local exhaust ventilation and a carbon adsorption unit, or an equivalent system, for collection of VOCs.

(2) A drying tunnel, rotating basket or other device acceptable to the department which prevents carry out of VOCs.

(3) Safety switches which shut off the system when the degreaser malfunctions.

(4) Minimize openings at the entrance and exit of the degreaser.

[Section 226.4] Section 226-1.5 Operating requirements.

Except as otherwise allowed by the department pursuant to section 226.5 of this Part, the following operating practices are required by a person conducting solvent metal cleaning:

(a) 'Cold cleaning degreasing.' Clean parts shall be drained at least 15 seconds or until dripping ceases.

(b) 'Open top vapor degreasing.'

(1) Minimize solvent carry out by the following measures:

(i) rack parts to allow full drainage;

(ii) move parts in and out of degreaser tank at less than 11 ft/min;

(iii) degrease the work load in the vapor zone at least 30 seconds or until condensation ceases;

(iv) tip out any pools of solvent before removal; and

(v) dry parts for at least 15 seconds before removal.

(2) Work loads shall not occupy more than half the open top area of the degreaser tank.

(3) Spray only below the vapor level.

(c) 'Conveyorized degreasing.'

(1) Exhaust ventilation rate shall not exceed 125 percent of the minimum ventilation rate required for the protection of workers in the vicinity of the degreaser.

(2) Minimize carry out emissions by:

(i) proper racking for best drainage; and

(ii) maintaining a conveyor speed at less than 11 ft/min.

(3) Water must not be visibly detectable in the solvent leaving the water separator.

[Section 226.5] Section 226-1.6 Reasonably available control technology.

Where it can be demonstrated that a solvent metal cleaning process cannot be controlled to comply with sections [226.2] 226-1.3, [226.3] 226-1.4 and [226.4] 226-1.5 of this [Part]Subpart for reasons of technological and economic infeasibility, the Department may accept a lesser degree of control upon submission of satisfactory evidence that the person engaging in solvent metal cleaning is applying reasonably available control technology (RACT) and has a plan to develop the technologies necessary to comply with the aforementioned sections. [Process specific RACT demonstrations shall be submitted with the application for a Title V facility permit or a State facility permit for an existing source under the provisions of Part 201 of this Title.] Process specific RACT demonstrations shall be submitted with the application for a Title V or State Facility permit or as a permit modification for existing sources under the provisions of Part 201 of this Title. Such process specific RACT demonstrations must be submitted to the United States Environmental Protection Agency for approval as a revision to the State Implementation Plan.

[Section 226.6] Section 226-1.7 Exemptions.

(a) This [Part] Subpart shall not apply to:

(1) conveyorized degreasers with an air/vapor interface smaller than 22 square feet (2.0 m2);

(2) open top vapor degreasers with an open top area smaller than11 square feet (1.0 m2);

(3) conveyorized and open top vapor degreasers subject to the requirements in 40 CFR 63, Subpart T; and

[(4) cold cleaning degreasers that use a solvent with a VOC content of five percent or less by weight.]

Section 226-1.8 Severability

Each provision of this Subpart shall be deemed severable, and in the event that any provision of this Subpart is held to be invalid, the remainder of this Subpart shall continue in full force and effect.

A new Subpart 226-2 is added to read as follows:

Subpart 226-2 Industrial Cleaning Solvents

Section 226-2.1 Applicability, Schedule and Exceptions.

(a) Applicability. This Subpart applies to the owner or operator of a facility which has actual emissions of three (3) tons or more of volatile organic compounds (VOCs) from industrial cleaning solvents, on a twelve-month rolling total basis. Once subject to this Subpart, a facility will remain subject even if the use of VOCs from industrial cleaning solvents drops below the three tons per year criteria. This Subpart specifically applies to the cleaning of foreign materials from surfaces of unit operations such as large and small manufactured components, parts, equipment, floors, tanks, and vessels. Emissions from all methods of cleaning, including by hand, will be considered toward the applicability criteria.

(b) Schedule. The owner or operator of a facility with an initial start-up after the effective date of this Subpart must be in compliance with its requirements upon start-up. The owner or operator of an existing facility must be in compliance with this Subpart within one year of the effective date of this Subpart or within one year of reaching the applicability criteria of emitting three (3) tons of VOC's from industrial cleaning solvents on a twelve (12) month rolling total basis.

(c) Exceptions. The requirements of this Subpart do not apply to the following:

(1) The use of cleaning solvents in cold cleaning degreasers (including remote reservoir degreasers), open-top vapor degreasing and conveyorized degreasers; and including cleaning items defined as 'special and extreme solvent cleaning' subject in Subpart 226-1, and cleaning processes that specifically do not apply to Subpart 226-1 under 226-1.6(a);

(2) The use of cleaning solvents in surface coating processes to clean spray guns subject to Subpart 228-1; and for surface preparation, clean-up and coating removal subject to Subpart 228-1;

(3) The use of cleaning solvents for surface preparation and clean-up of adhesives, sealants and primers subject to Subpart 228-2;

(4) The use of cleaning solvents for offset lithographic, flexographic, rotogravure, screen printing or letterpress printing processes subject to Part 234;

(5) The use of cleaning solvents used in Aircraft de-icing operations exempt from permitting under Subpart 201-3;

(6) Cleaning solvents given an "A" rating by the Department subject to Part 212; and

(7) The use of any cleaning solvent specified or regulated under any Federal or State statute or regulation. This exception is conditioned on Departmental approval which shall at a minimum include a permit special condition.

Section 226-2.2 Definitions.

(a) To the extent that they are not inconsistent with the specific definitions in this section, the general definitions of Part 200 of this Title apply. For the purposes of this Subpart, the following specific definitions apply:

1) 'Cleaning Tool.' An item used to aid cleaning, such as wiping rags, brushes, mops, scrapers, or water jets.

2) 'Industrial Cleaning Solvent.' Any liquid containing a volatile organic compound used to facilitate the removal of foreign materials from a surface.

3) 'Unit Operation.' An industrial operation, classified or grouped according to its function in an operating environment, such as mixing or holding vessels, tanks, reactors, floors or other surfaces to be cleaned.

4) 'Unit Operation Systems.' The ensemble of equipment around which a material balance is performed. It includes all possible points/sources that could result in the losses to the atmosphere as a result of the equipment being cleaned, including losses during dispensing of cleaning materials, losses from residual cleaning materials on or in cleaning tools, and losses from storing cleaning materials.

Section 226-2.3 Control Requirements.

The owner or operator of a facility subject to this Subpart shall not conduct any cleaning, with industrial cleaning solvents containing VOC's, unless the following control measures are used:

(a) Work Practice

(1) use closed, non-leaking containers to store or dispose of cloth or other absorbent cleaning tools impregnated with industrial cleaning solvents when not in use;

(2) minimize air circulation around cleaning operations;

(3) properly dispose of used cleaning solvents and tools;

(4) implement equipment practices that minimize emissions, such as maintaining of cleaning equipment and repair of solvent leaks; and

(a) an industrial cleaning solvent with a maximum VOC content of fifty (50) grams of VOC per liter (0.42 pounds of VOC per gallon) of cleaning material must be used for cleaning the following: large and small manufactured components, parts, equipment, floors, tanks, and vessels; or

(b) as an alternative to the maximum VOC content specified above, an industrial cleaning solvent with a maximum composite vapor pressure of eight (8) millimeters of mercury (mmHg) at 20 degrees Celsius may also be used; or

(c) emissions are controlled by an emission control system with an overall control efficiency of at least 85 percent or equivalent control.

Section 226-2.4 Compliance.

Reasonably available control technology.

(a) Where it can be demonstrated by the owner or operator of a facility that the requirements of section 226-2.2 of this Subpart cannot be met, for reasons of technological and economic infeasibility, the Department may accept a lesser degree of control upon submission of satisfactory evidence that the person(s) engaging in cleaning with industrial cleaning solvents is applying reasonably available control technology (RACT) and has a plan to develop the technologies necessary to comply with the aforementioned section. Process specific RACT demonstrations shall be submitted with the application for a Title V or State Facility permit, or as a permit modification for existing sources under the provisions of Part 201 of this Title. The Department will submit such process specific RACT demonstration to the United States Environmental Protection Agency as a revision to the State Implementation Plan.

Record Keeping.

(b) The owner or operator of a facility must retain a record of the quantity and type of industrial cleaning solvents used at the facility. This record must be maintained for a period of five years and be provided to the department upon request. An invoice, a bill of sale, a certificate covering multiple sales, a material safety data sheet, or other documentation suitable for establishing compliance, acceptable to the department, may be used to comply with this requirement.

Section 226-2.5 Severability.

Each provision of this Subpart shall be deemed severable, and in the event that any provision of this Subpart is held to be invalid, the remainder of this Subpart shall continue in full force and effect.

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