Terms Last Revised: 6/02/2016

63 Subpart T, for Halogenated Solvent Cleaning

Cold Cleaning Machines

Revised: 4/24/14 to replace the ‘ signs that were changed to = signs with the change over from Word Perfect to WORD

Revised: 4/25/14 for Amendments of 5/3/07 which added the Facility-Wide Standards; this new Section, §63.471, has been added to the end of this file for ease of documenting compliance with the facility standard.

Revised: 5/1/14 to split out the cold cleaning from the batch vapor, in-line solvent cleaning, and continuous web operations

63 Subpart T, for Halogenated Solvent CleaningThe following terms are to be used for facilities subject to 40 CFR 63, Subpart T for halogenated solvent cleaning; and which includes each batch vapor, in-line vapor, in-line cold, batch cold-solvent, continuous web, and remote reservoir continuous web cleaning machine that uses any solvent containing methylene chloride, perchloroethylene, trichloroethylene, 1,1,1-trichloroethane, carbon tetrachloride, or chloroform, or any combination of these halogenated HAP solvents, in a total concentration greater than 5% by weight as a cleaning and/or drying agent.

Summary of requirements of standard for Cold Cleaning Machines:

Batch cold cleaning machines

Batch cold cleaning machines have design, work, and operational practice requirements.

Immersion batch cold solvent cleaning machines have design requirements which include a tightly fitting cover, which can only be opened during part entry/removal; and with either a 1 inch surface water layer, OR a minimum freeboard ratio of 0.75 [63.462 (a)].

Remote-reservoir batch cold solvent cleaning machines shall have a tight cover over the solvent sump, that shall be closed except during cleaning of parts [63.462 (b)].

Work and operational practices [63.462 (c)] apply to immersion batch cold solvent cleaning machines using the freeboard ratio for compliance (excludes water layer) and to remote-reservoir batch cold solvent cleaning machines

Batch vapor and in-line solvent cleaning machines

Except for the option to demonstrate compliance using alternative standards [63.464] that require special approval by the Director [63.469], batch vapor and in-line solvent cleaning machines have design requirements [63.463 (a)]; work and operational practice requirements (as applicable to the control method) [63.463 (d)]; and control/equipment standards [63.463 (e)].

1

Summary of Data Entry

XXXX1: enter the name of the halogenated HAP solvent employed in the solvent cleaning machineXXXX2: enter the limit from Table 5 of this section:

150 for batch vapor solvent cleaning machines153 for existing in-line solvent cleaning machines 99 for new in-line solvent cleaning machines

XXXX3: enter the selected control combination from Table 1 or Table 2 for an existing source, or where the compliance method is known for a new source

XXXX4: enter the selected control combination from Table 3 for an existing in-line solvent cleaning machineXXXX5: enter the selected control combination from Table 4 where the compliance method is known for the

new sourceXXXX6: control combination selected from Tables 1, 2 3, or 4XXXX7: the Table #XXXX8: “partial” or “full” (enclosure)XXXX9: The limit from Table 6 or as calculated from the equation for “EL” (kg/month)XXXX10: 3.4 meters per minute (11 feet per minute)XXXX11: 0.9 meters per minute (3 feet per minute)XXXX12: describe the alternative control method(s) and proposed frequency and method of testingXXXX13: the name of the control or control combination used, selected from # 1 ,2 ,3, or 4 below [from

63.463(g)(1)(i)]XXXX14: the name of the control combination selected from 63.463(g)XXXX15: the name of the control system selected from 63.463(h)XXXX16: squeegee systemXXXX17: air knife system

Codes in Term Number: M.T.x.#:

M: MACTT: Subpart Tx: coded as follows:

a: Additional Terms & Conditions for Batch Cold Cleanersb: Additional Terms & Conditions for Batch Vapor, In-Line Solvent, Continuous Web, and Remote Reservoir

Continuous Web Cleaning Machinesc: Additional Terms & Conditions for facilities requesting an Alternative Standardd. Operational Restrictions for Batch Cold Cleanerse. Operational Restrictions for Batch Vapor, In-Line Solvent, Continuous Web, and Remote Reservoir

Continuous Web Cleaning Machinesf. Operational Restrictions for facilities requesting an Alternative Standardg. Monitoring and Record keeping for Batch Cold Cleanersh. Monitoring and Record keeping for Batch Vapor, In-Line Solvent, Continuous Web, and Remote Reservoir

Continuous Web Cleaning Machinesi. Monitoring and Record keeping for facilities requesting an Alternative Standardj. Reporting Requirements for All Solvent Cleaning Machines subject to Subpart T (Permit Application)k. Reporting Requirements for Batch Cold Cleanersm. Reporting Requirements for Batch Vapor, In-Line Solvent, Continuous Web, and Remote Reservoir

Continuous Web Cleaning Machinesn. Reporting Requirements for facilities requesting an Alternative Standardo. Testing Requirements for All Solvent Cleaning Machines (Annual Emissions)p. Testing Requirements for Batch Cold Cleaning Machinesq. Testing Requirements for Batch Vapor, In-Line Solvent, Continuous Web, and Remote Reservoir

Continuous Web Cleaning Machinesr. Testing Requirements for facilities requesting an Alternative Standard

2

3

TERMS & CONDITIONS

Note: When you copy the terms and conditions listed below into the permit, make sure that you don’t copy the colored print, bold, and/or italicized text. It is for illustrative and clarification purposes only. Many selections are offered by using “OR”; usually only a new facility who has not determined their method of compliance may want more than one control combination or compliance option in their permit, however, an installed source may want the option to make a change.

Additional Terms and Conditions

M.T.a Batch cold cleaning standards [40 CFR 63.462]

Note: Choose the appropriate term (a.1, a.2, a.3, or a.4) based on the type of cold solvent cleaning machine being permitted.

M.T.a.1 Use this term when the compliance method for a new immersion batch cold cleaning machine has not yet been determined [40 CFR 63.462(a)]

# The permittee shall comply with one of the following requirements for the immersion batch cold solvent cleaning machine:

a. employ a tightly fitting cover that shall be closed at all times except during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or to measure the depth of the water layer; and shall maintain a water layer at a minimum thickness of 2.5 centimeters (1.0 inch) on the surface of the solvent; or

b. employ a tightly fitting cover that shall be closed at all times except during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or to measure the depth of the freeboard; and shall maintain a freeboard ratio of 0.75 or greater.

[40 CFR 63.462(a)]

M.T.a.2 Use this term for immersion batch cold cleaning machines demonstrating compliance using a water cover [40 CFR 63.462(a)(1)]

# The permittee shall employ a tightly fitting cover that shall be closed at all times except during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or to measure the depth of the water layer; and shall maintain a water layer at a minimum thickness of 2.5 centimeters (1.0 inch) on the surface of the solvent.

[40 CFR 63.462(a)(1)]

M.T.a.3 Use this term for immersion batch cold cleaning machines demonstrating compliance using a freeboard ratio [40 CFR 63.462(a)(2)]

# The permittee shall employ a tightly fitting cover that shall be closed at all times except during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or to measure the depth of the freeboard; and shall maintain a freeboard ratio of 0.75 or greater.

4

[40 CFR 63.462(a)(2)]

M.T.a.4 Use this term for remote-reservoir batch cold cleaning machines [40 CFR 63.462(b)]

# The permittee shall employ a tightly fitting cover over the solvent sump, that shall be closed at all times except during the cleaning of parts, during solvent addition and removal, or for the purpose of maintenance or monitoring.

[40 CFR 63.462(b)]

5

Operational Restrictions

M.T.d Operational restrictions for batch cold cleaners

M.T.d.1 General work and operational practice requirements for batch cold solvent cleaning machines, excluding immersion batch cold cleaners that employ a water layer [40 CFR 63.462(c)]

# The permittee shall comply with all of the following work and operational practice requirements:

a. All waste solvent shall be collected and stored in closed containers. The closed container may contain a device that allows pressure relief, but does not allow liquid solvent to drain from the container.

b. If a flexible hose or flushing device is used, flushing shall be performed only within the freeboard area of the solvent cleaning machine.

c. The permittee shall drain solvent cleaned parts for 15 seconds or until dripping has stopped, whichever is longer. Parts having cavities or blind holes shall be tipped or rotated while draining.

d. The permittee shall ensure that the solvent level does not exceed the fill line.

e. Spills during solvent transfer shall be wiped up immediately. The wipe rags shall be stored in covered containers meeting the requirements of paragraph (a) above.

f. When an air- or pump-agitated solvent bath is used, the permittee shall ensure that the agitator is operated to produce a rolling motion of the solvent, but not observable splashing against tank walls or parts being cleaned.

g. The permittee shall ensure that, when the cover is open, the cold cleaning machine is not exposed to drafts greater than 40 meters per minute (132 feet per minute), as measured between 1 and 2 meters (3.3 and 6.6 feet) upwind and at the same elevation as the tank lip.

h. Sponges, fabric, wood, paper products, and/or other porous or absorbent material shall not be cleaned.

[40 CFR 63.462(c)]

Note: term “h” above does not apply to the porous material component of PCB-laden transformers, if properly cleaned and disposed of in accordance with TSCA requirements.

M.T.d.2 Operational standards for batch cold solvent cleaning machines, excluding immersion batch cold cleaners that employ a water layer [40 CFR 63.462(a) and (b)]

Include one of the following terms, selected per the type of cold cleaner and the method of compliance.

Use for immersion batch cold cleaners, choose one:

# The permittee shall maintain the water layer on the surface of the solvent at a minimum thickness of 2.5 centimeters (1.0 inch) at all times, and shall keep the cover closed except

6

during the entry and removal of parts or addition and removal of solvent.

[40 CFR 63.462(a) and (b)]

OR

# The permittee shall maintain a freeboard ratio of 0.75 or greater at all times, and shall keep the cover closed except during the entry and removal of parts, during solvent level measurements to determine the freeboard ratio, or during the addition and/or removal of the solvent.

[40 CFR 63.462(a) and (b)]

Use for remote reservoir batch cold cleaners:

# The cover over the solvent sump shall be closed at all times except during cleaning, or the addition and removal of solvent.

[40 CFR 63.462(a) and (b)]

M.T.f. Operational restrictions for all solvent cleaning machines where the facility is requesting an alternative standard [40 CFR 63.465(b)]

M.T.f.1Operational restrictions for facility requesting an alternative standard [40 CFR 63.465(b)]

# On the first operating day of every month the permittee shall ensure that the solvent cleaning machine system contains only clean liquid solvent. This includes, but is not limited to, fresh unused solvent, recycled solvent, and used solvent that has been cleaned of soils. A fill line must be indicated during the first month the measurements are made. The solvent level within the machine must be returned to the same fill line each month, immediately prior to calculating monthly emissions and/or the overall cleaning system’s control efficiency. The solvent cleaning machine does not have to be emptied and filled with fresh unused solvent prior to the calculations.

[40 CFR 63.465(b)]

7

Monitoring and Record keeping Requirements

M.T.g Monitoring and record keeping for batch cold cleaners

M.T.g.1 Monitoring and record keeping for solvent cold cleaning operations [63.462-standards] (recording requirements for cold cleaners are not included in the MACT rules, the below terms can only be included if used as BAT--no frequency of the record is included for this same reason, but could be added as BAT)

********Possible BAT terms for immersion batch cold cleaners, select by control method:

If using a water layer for compliance

# The permittee shall measure and record of the depth of the water layer on the surface of the cleaning solvent to assure compliance with the minimum 1 inch water layer limitation.

If using a freeboard ratio for compliance

# The permittee shall measure and record the freeboard ratio before and after each solvent addition to assure compliance with the 0.75 or greater freeboard ratio limitation.

AND

# The permittee shall maintain a record of any period of time that the cover is not tightly closed and/or is left open, other than during parts entry and removal.

Possible BAT terms for remote-reservoir batch cold cleaning machines:

# The permittee shall maintain a record of any period of time when the tightly fitting cover is not closed over the solvent sump, other than during the cleaning of parts.

M.T.g.2 Monitoring and record keeping of draft exposure for solvent cold cleaning operations

Possible BAT term for draft exposure for solvent cold cleaning

# The permitted shall measure and maintain a record of the draft exposure to the tank (in meters or feet per minute), measured between 1 and 2 meters (3.3 and 6.6 feet) upwind and at the same elevation as the tank lip.

8

Reporting Requirements

M.T.j Reporting requirements for all solvent cleaning machines subject to Subpart T

M.T.j.1 Initial notification reporting requirements for new or existing solvent cleaning machines, and for any modification subject to the provisions of Subpart T [40 CFR 63.468(a) and (b)]

The following information is to be submitted with/in the permit application as a requirement of the Initial Notification Reporting in this subpart. This information would need to be submitted before a permit could be issued and therefore would not appear as a term in the permit:

1. the name and address of the permittee;

2. a notification of intention to construct a new major affected source;

3. the address (i.e., physical location) of the solvent cleaning machine;

4. an identification of all the relevant standards applicable to the solvent cleaning machine

5. an expected completion date of construction or reconstruction, or the date of installation, if installed;

6. the anticipated startup date of the solvent cleaning machine;

7. the type and quantity of hazardous air pollutants expected to be emitted by the unit;

8. a brief description of the solvent cleaning machine type (batch vapor, batch cold, vapor in-line, or cold in-line), the solvent(s), the solvent/air interface area, and existing controls;

9. the anticipated compliance approach for the solvent cleaning machine; and

10. an estimate of the annual halogenated HAP solvent consumption for each solvent cleaning machine.

If the installation date is unknown at an existing facility, the following requirement may replace #5 above:

5. a letter certifying that the solvent cleaning machine was installed prior to November 29, 1993;

OR for “5"

5. a letter certifying that the solvent cleaning machine was installed after November 29, 1993.

[40 CFR 63.468(a) and (b)]

M.T.k Reporting requirements for batch cold cleaners

M.T.k.1 Compliance Reporting requirements for batch cold solvent cleaning machines subject to the provisions of Subpart T [40 CFR 63.468(c)]

# The permittee shall submit an initial statement of compliance to the regulating agency no later

9

than 150 days following startup of the unit. This report shall include the following information:

a. the name and address of the permittee;

b. the address (i.e., physical location) of the solvent cleaning machine;

c. a statement signed by the owner or operator of the solvent cleaning machine, stating that the unit is in compliance with the provisions of 40 CFR 63, Subparts A and T; and

d. the compliance approach for the solvent cleaning machine.

[40 CFR 63.468(c)]

M.T.k.2 Exceedance reporting requirements for batch cold solvent cleaning machines

For immersion batch cold cleaners, choose one:

# The permittee shall submit quarterly deviation reports for any period of time in which the water layer was measured to be under 2.5 cm (1.0 inch) thick; and/or the cover was left open during any period of time in which the following operations were not being performed: during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or to measure the depth of the water layer.

OR

# The permittee shall submit quarterly deviation reports for any period of time in which the freeboard ratio was measured to be under 0.75; and/or the cover was left open during any period of time in which the following operations were not being performed: during parts entry and removal, during solvent addition and removal, for the purpose of maintenance or monitoring, or during measurement of the freeboard.

For remote-reservoir batch cold cleaners:

# The permittee shall submit quarterly deviation reports for any period of time in which the cover was left open during any period of time in which the following operations were not being performed: during parts entry and removal, during solvent addition and removal, or for the purpose of maintenance or monitoring.

M.T.k.3 Reporting requirements for draft exposure for solvent cold cleaning operations

Draft exposure

# The permittee shall submit a quarterly deviation report if monthly measurements and record are not maintained of the draft exposure to the tank (in meters or feet per minute), measured between 1 and 2 meters (3.3 and 6.6 feet) upwind and at the same elevation as the tank lip; or if the measurements taken exceed 40 meters per minute (132 feet/minute).

10

Testing Requirements

M.T.o Testing: Determining annual emissions for all solvent cleaning machines subject to Subpart T

M.T.o.1 Calculating the annual emissions or the potential to emit

Note: Calculating potential to emit for the facility; applies to all solvent cleaning machines complying with 40 CFR part 63 [40 CFR 63.465(e)]

# Compliance with the emission limitations in the terms and conditions of this permit shall be determined in accordance with the following methods:

# Emission Limit

TPY limit

Applicable Compliance Method

The permittee shall determine the facility’s potential to emit (PTE) from all solvent cleaning operations. A facility’s total PTE is the sum of the HAP emissions from all solvent cleaning operations plus all HAP emissions from other emissions units from within the facility. The potential to emit for each emissions unit shall be determined in accordance with the following procedures:

a. determine the potential to emit for each individual solvent cleaning machine using the following equation:

PTEi = Hi X Wi X SAIi

where:

PTEi = the potential to emit for the solvent cleaning machine i (kilograms solvent per year)

TPY limit = PTEi X 0.0011023

Hi = hours of operation for solvent cleaning machine i (hours per year)

= 8760 hours per year, unless otherwise restricted by a federally enforceable requirement

Wi = the working mode uncontrolled emission rate (kilograms per square meter per hour)

= 1.95 kilograms per square meter per hour for batch vapor and cold cleaning machines

= 1.12 kilograms per square meter per hour for in-line solvent cleaning machines

SAIi = solvent/air interface area of solvent cleaning machine i (square meters).

11

Add this additional calculation for “SAI” for cleaning machines that do not have a solvent area interface

This cleaning machines does not have a solvent/air interface, therefore “SAI” shall be calculated using the following equation:

SAI = 2.20 * (Vol) 0.6

where:

SAI = the solvent/air interface area (square meters)

Vol = the cleaning capacity of the solvent cleaning machine (cubic meters).

[40 CFR 63.465(e)]

M.T.p Testing requirements for batch cold cleaning operations

M.T.p.1 Testing requirement for draft exposure to solvent cold cleaning operations not using a water layer [created for 40 CFR 63.462(c)(7)]

# Emissions Limitation/Control Requirements

The cold cleaning machine, when open, shall not be exposed to drafts greater than 40 meters per minute (132 feet per minute).

Applicable Compliance Method

The permitted shall measure and maintain a record of the draft exposure to the tank (in meters or feet per minute), and measured between 1 and 2 meters (3.3 and 6.6 feet) upwind and at the same elevation as the tank lip.

[40 CFR 63.462(c)(7)]

12

Facility-Wide Standards the facility-wide emission limits were added in the Amendments of 5/3/07

Note: the facility-wide standars do not apply to: solvent cleaning machines used in the manufacture and maintenance of aerospace products, solvent cleaning machines used in the manufacture of narrow tubing, and continuous web cleaning machines, located at a major source OR cold batch cleaning machines located at an area source.

Additional Terms & Condtions

# The permittee shall ensure that the total emissions of perchloroethylene (PCE), trichloroethylene (TCE), and methylene chloride (MC) used at the affected facility are equal to or less than the applicable facility-wide 12-month rolling total emission limit presented in Table 1 of 40 CFR 63.471, and as determined using the procedures in paragraph 40 CFR 63.471(c).

[40 CFR 63.471(b)(2)]

TABLE 1—FACILITY-WIDE EMISSION LIMITS FOR FACILITIES WITH SOLVENT CLEANING MACHINES

Solvents emitted

Facility-wide annual emission limits in kg—for general population degreasing

machines

Facility-wide annual emission limit in kg for military depot

maintenance facilities

PCE onlya 4,800 8,000

TCE only 14,100 23,500

MC only 60,000 100,000

Multiple solvents—Calculate the MC-weighted emissions using equation 1

60,000 100,000

a PCE emission limit calculated using CalEPA URE.

Monitoring & Recordkeeping Requirements

# The permittee shall maintain a log of solvent additions and deletions for each solvent cleaning machine.

[40 CFR 63.471(b)(1)]

# The permittee shall maintain the following records either in electronic or written form for a period of 5 years.

a. The dates and amounts of solvent that are added to each solvent cleaning machine.

b. The solvent composition of wastes removed from each solvent cleaning machines as determined using the procedure described in paragraph 40 CFR 63.471(c)(3).

c. Calculation sheets showing how monthly emissions and the 12-month rolling total emissions from each solvent cleaning machine were determined, and the results of all calculations.

13

[40 CFR 63.471(e)]

Reporting Requirements

# The permittee shall submit an initial notification report to the Director containing the following information:

a. the name and address of the owner or operator of the affected facility;

b. the address (i.e., physical location) of the solvent cleaning machine(s);

c. a brief description of each solvent cleaning machine at the affected facility including machine type (batch vapor, batch cold, vapor in-line or cold in-line), solvent/air interface area, and existing controls;

d. the date of installation for each solvent cleaning machine; and

e. an estimate of annual halogenated HAP solvent consumption for each solvent cleaning machine.

[40 CFR 63.471(f)]

# The permittee shall submit to the Director an initial statement of compliance that shall include the following information:

a. the name and address of the owner or operator of the affected facility;

b. the address (i.e., physical location) of each solvent cleaning machine and facility ID number assigned with this permit; and

c. the results of the first 12-month rolling total emissions calculation.

[40 CFR 63.471(g)]

# The permittee shall submit a solvent emission report at the end of every year containing the following requirements:

a. the average monthly solvent consumption for the affected facility in kilograms per month; and

b. the 12-month rolling total solvent emission estimates calculated each month using the method described in the Testing Section of the permit;

This report can be combined with the annual report required in per 40 CFR 63.468(f) and (g) into a single report for each facility.

[40 CFR 63.471(h)]

Testing Section

14

# On the first operating day of every month, the permittee shall demonstrate compliance with the applicable facility-wide emission limit on a 12-month rolling total basis using the following procedures identified below for each solvent cleaning machine.

a. On the first operating day of every month the permittee shall ensure that each solvent cleaning machine system contains only clean liquid solvent, which includes but is not limited to, fresh unused solvent, recycled solvent, and used solvent that has been cleaned of soiled materials.

b. The solvent level within the machine must be returned to the same fill-line each month, immediately prior to calculating monthly emissions. The solvent cleaning machine does not have to be emptied and filled with fresh unused solvent prior to the calculations.

c. On the first operating day of the month, the permittee shall determine the total amount of halogenated HAP solvent removed (SSRi) using one if the following methods:

i. tests conducted using EPA reference Method 25d; orii. engineering calculations included in the compliance report.

d. Using the records of all solvent additions and deletions from the previous month, on the first operating day of each month, the permittee shall determine solvent emissions (Eunit) from each solvent cleaning machine using the following equation:

Eunit = SAi - LSRi - SSRi

Where:

Eunit = the total halogenated HAP solvent emissions from the solvent cleaning machine during the most recent month i, (kilograms of solvent per month).

SAi = the total amount of halogenated HAP liquid solvent added to the solvent cleaning machine during the most recent month i, (kilograms of solvent per month).

LSRi = the total amount of halogenated HAP liquid solvent removed from the solvent cleaning machine during the most recent month i, (kilograms of solvent per month).

SSRi = the total amount of halogenated HAP solvent removed from the solvent cleaning machine in solid waste, obtained as described above, during the most recent month i, (kilograms of solvent per month).

[40 CFR 63.471(c)(1), (2), and (3)]

# On the first operating day of the month, after 12 months of emissions data are available, the permittee shall determine the 12-month rolling total emissions, ETunit, for the 12-month period ending with the most recent month using the following equation:

12

ETunit = [ ∑ ETunit

j=1

where:

15

ETunit = the total halogenated HAP solvent emissions over the preceding 12 months, (kilograms of solvent emissions per 12-month period).

Eunit = halogenated HAP solvent emissions for each month (j) for the most recent 12 months (kilograms of solvent per month).

[40 CFR 63.471(c)(4)]

# On the first operating day of the month, after 12 months of emissions data are available, the permittee shall determine the 12-month rolling total emissions, ETfacility, for the 12-month period ending with the most recent month using the following equation:

i

ETfacility = [ ∑ ETunitj=1

where:

ETfacility = the total halogenated HAP solvent emissions over the preceding 12 months for all cleaning machines at the facility, (kilograms of solvent emissions per 12-month period).

ETunit = the total halogenated HAP solvent emissions over the preceding 12 months for each unit j, where i equals the total number of units at the facility (kilograms of solvent emissions per 12-month period).

[40 CFR 63.471(c)(5)]

# The permittee shall determine the facility-wide 12-month rolling total emission using the following equation and the information calculated above:

NOTE: In the equation, the facility emissions of PCE and TCE are weighted according to their carcinogenic potency relative to that of MC. The value of A is 12.5. The value for B is 4.25.

WE = (PCE x A) + (TCE x B) + (MC)

where:

WE = Weighted 12-month rolling total emissions in kg (lbs).

PCE = 12-month rolling total PCE emissions from all solvent cleaning machines at the facility in kg (lbs).

TCE = 12-month rolling total TCE emission from all solvent cleaning machines at the facility in kg (lbs).

MC = 12-month rolling total MC emissions from all solvent cleaning machines at the facility in kg (lbs).

If the applicable facility-wide emission limit in Table 1 of 40 CFR 63.471(b)(2) is not met, an exceedance shall have occurred. All exceedances shall be reported as required in 40 CFR 63.468(h).

[40 CFR 63.471(a)(2) and (d)]

16