SAN JOAQUIN VALLEY UNIFIED AIR POLLUTION CONTROL DISTRICT

RULE 4661 - ORGANIC SOLVENTS (Adopted May 21, 1992)(Amended December 17, 1992; December 9, 1999; December 20, 2001; May 16, 2002; September 20, 2007).

1.0 Purpose

The purpose of this rule is to limit the em issions of volatile organic compounds (VOCs) from the use of organic solvents. This rule also specifies the reduction, monitoring, reporting, and disposal requirements.

2.0 Applicability

The provisions of this rule shall apply to any source operation that uses organic solvents unless the source operation is exempted under Section 4.0.

3.0 Definitions

3.1 APCO: as defined in Rule 1020 (Definitions).

3.2 ARB: California Air Resources Board.

3.3 Baked: a process whereby the coated obj ect is heated above ambient temperature to a temperature at or above 194°F for the purpose of curing or drying.

3.4 Dissolver: an organic solven t that is added to an adhesi ve, coating, or ink in order to melt or to liquefy solid particles.

3.5 EPA: United States Envi ronmental Protection Agency.

3.6 Exempt Compounds: all organic compounds not classified as VOC, as listed in the definition of VOC in Rule 1020 (Definitions).

3.7 Grams of VOC per liter of Material: th e weight of VOC per volume of material and is calculated by the following equation:

Grams of VOC per liter of material = Ws – Ww – Wec

Vm

Where: Ws = Weight of volatile compounds, in grams Ww = Weight of water, in grams Wec = Weight of exempt compounds, in grams Vm = Volume of material, in liters.

3.8 Heat-Cured or Heat-Polymer ized: heated to a temperature less than or equal to

194 o F for the purpose of curing a coating, ink or adhesive.

3.9 Normal Business Hours: Monday through Friday, 8:00 am to 5:00 pm.

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3.10 Organic Solvent: the same as “Solvent.”

3.11 Organic Solvent Cleaning: as defined in Rule 4663 (Organic Solvent Cleaning, Storage, and Disposal).

3.12 Photochemically Reactive Solvent: any organic solv ent with an aggregate of

more than 20% of its total volume com posed of chemical compounds classified below or which exceeds any of the fo llowing individual percentage composition limitations referring to the total volume of solvent:

3.12.1 A combination of hydrocarbons, alcohol s, aldehydes, esters, ethers or ketones having an olefinic or cycloolefi nic type of unsaturation: five (5)

percent; or

3.12.2 A combination of aromatic compounds with eight (8 ) or more carbon atoms to the molecule except ethyl benzene: eight (8) percent; or

3.12.3 A combination of ethylbenzene, ke tones having branched hydrocarbon structures, or toluene: 20%.

Whenever any organic solvent or any cons tituent of an organic solvent may be

classified from its chemical structure in to more than one (1) of the above groups of organic compounds, it shall be consider ed as a member of the most reactive chemical group, that is, that group having the least allowable percentage of the

total volume of solvents.

3.13 SCAQMD: South Coast Air Qu ality Management District.

3.14 Solvent: as defined in Rule 4663 (Organic Solvent Cleaning, Storage, and Disposal).

3.15 Standard Conditions: as defined in Rule 1020 (Definitions).

3.16 Thinner or Viscosity Reducer: an organic solvent which is used to dilute coatings to reduce viscosity, color strength, and so lids, or to modify drying conditions.

3.17 Volatile Organic Compound (VOC): as defined in Rule 1020 (Definitions).

4.0 Exemptions

The provisions of this rule shall not apply to:

4.1 The manufacture of organic solvents, or the transport of organic solvents or materials containing organic solvents.

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4.2 Any source operation that is subject to or specifically exempted by any of the following rules:

4.2.1 Rule 4601 (Architectural Coatings),

4.2.2 Until December 31, 2008, Rule 4602 (Motor Vehicle and Mobile Equipment Coating Operations),

4.2.3 Rule 4603 (Surface Coating of Metal Parts and Products),

4.2.4 Rule 4604 (Can and Coil Coating Operations),

4.2.5 Rule 4605 (Aerospace Assembly and Component Coating Operations),

4.2.6 Rule 4606 (Wood Products Co ating Operations),

4.2.7 Rule 4607 (Graphic Arts),

4.2.8 Rule 4610 (Glass Coating Operations),

4.2.9 On and after January 1, 2009, Rule 4612 (Motor Vehicle and Mobile Equipment Coating Operations – Phase II),

4.2.10 Rule 4653 (Adhesives),

4.2.11 Rule 4662 (Organic Solvent Degreasing Operations),

4.2.12 Rule 4684 (Polyester Resin Operations), or

4.2.13 Rule 4691 (Vegetable Oil Processing Operations).

4.3 The spraying or other employment of insecticides, pesticid es or herbicides.

4.4 The employment, application, evaporati on, or drying of saturated halogenated hydrocarbons or perchloroethylene.

4.5 The use of any material, in any sour ce operation described in Sections 5.1, 5.2, 5.3, or 5.4 if all of the following conditions are met:

4.5.1 The volatile content of material consists only of water and organic solvents, and

4.5.2 The organic solvents content comp rises not more than 20 percent by volume of the total volatile content, and

4.5.3 The volatile content is not photochemically reactive, and

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4.5.4 The organic solvent does not come into contact with flame.

5.0 Requirements

5.1 Sections 5.2 through 5.7 shall rema in in effect until March 20, 2008.

5.2 Solvents Subjected to Heat: An operato r shall not discharge into the atmosphere more than 15 pounds of VOC emissions in any one (1) day from any source operation in which any organic solvent or any material c ontaining organicsolvents comes into contact with a flame or is baked, heat-cured, or heatpolymerized in the presence of oxygen, unless the VOC emissions have been reduced through the operation of an APCO-approved VOC emissions control system with an overall capture and contro l efficiency of at least 85 percent by weight. Those portions of any series of source operation designed for processing continuous web, strip, or wire that emit VOCs in the course of using operations

described in this section shall be colle ctively subject to compliance with this

section.

5.3 Photochemically Reactive Solvents: An operator shall not discharge into the atmosphere more than 40 pounds of VOC emissions in any one (1) day from any source operation resulting from conditions other than those described in Section 5.1 for employing or applyi ng any photochemically reac tive solvent, or any material containing such photochemica lly reactive solvent, unless the VOC emissions have been reduced through the operation of an APCO-approved VOC emissions control system with an overall cap ture and control efficiency of at least 85 percent by weight. Emissions resultin g from baking, heat-curing, or heatpolymerizing, as described in Section 5.2 of this rule, shall be excluded from determination of compliance wi th this section. Those po rtions of any series of source operation designed for processing a continuous web, strip, or wire that emit VOCs in the course of using operati ons described in this section shall be collectively subject to compliance with this section.

5.4 Non-photochemically Reactive Solvents: An operator shall not discharge into the atmosphere more than 3,000 pounds of VOC emissions in any one (1) day from any source operation in which any non-phot ochemically reactive organic solvent or any material containing such a solv ent, is employed or applied, unless VOC emissions have been reduced through the operation of an APCO-approved VOC emissions control system with an overall cap ture and control efficiency of at least 85 percent by weight. Emissions resultin g from baking, heat-curing, or heatpolymerizing, as described in Section 5.2 of this rule, shall be excluded from determination of compliance wi th this section. Those po rtions of any series of source operation designed for processing a continuous web, strip, or wire that emit VOCs in the course of using operati ons described in this section shall be collectively subject to compliance with this section.

5.5 Cleanup: Emissions of VOCs into th e atmosphere resulting from cleanup operations utilizing photochemically reactiv e organic solvents, from any source

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operation described in Sections 5.2, 5.3, or 5.4 shall be included with other emissions of VOCs from that source ope ration for determining compliance with

this rule.

5.6 Post Removal Drying: Emissions of VO Cs into the atmosphere as a result of spontaneously continuing drying of pr oducts for the first 12 hours after their removal from any source operation describe d in Sections 5.2, 5.3, or 5.4 shall be

included with other emissions of VOCs from that source operation for determining compliance with this rule.

5.7 Monitoring: An operator incinerating, adsorbing, or otherwise processing organic solvents pursuant to this rule shall pr ovide, properly install and maintain in calibration, in good working order and in operation, devices as specified in the Authority to Construct or the Permit to Op erate, or as specified by the APCO, for indicating temperatures, pressures, rate s of flow or othe r operating conditions necessary to determine the degree and e ffectiveness of the VOC emission control

system.

5.8 On and after March 21, 2008, from all VOC-c ontaining materials, equipment, and processes subject to this rule, an operator shall not emit to the atmosphere VOCs in excess of 833 pounds VOC per calendar month per facility.

5.9 In lieu of meeting the VOC emission lim it in Section 5.8, an operator may install and operate a VOC emission control system that meets the following requirements.

5.9.1 The VOC emission control system shall be approved by the APCO.

5.9.2 The VOC emission control system shall have a capture efficiency of at least 90 percent by we ight (90 wt%) and a control efficiency of at least 95

wt%.

5.10 Organic Solvent Cleaning, Storag e, and Disposal Requirements

Operators shall comply with the requi rements of Rule 4663 (Organic Solvent Cleaning, Storage, and Disposal) when performing organic solvent cleaning, storage and disposal of organic solvents and waste solvent materials, coatings, adhesives, catalysts, an d thinners. See Sections 5.0 and 6.0 of Rule 4663 for solvent VOC content limits, work pr actices, recordkeeping, and testing requirements.

6.0 Administrative Requirements

6.1 Recordkeeping

6.1.1 Until March 20, 2008, the records shall identify the organic solvents used in all source operations and shall include the name of each organic solvent,

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solvent manufacturer’s name, chemi cal composition, VOC content, vapor pressure, amount used.

6.1.1.1 An operator of a coating oper ation subject to this rule shall maintain daily records.

6.1.1.2 For other operations subject to th is rule, records may be kept on an extended basis, but not to exceed monthly, and shall not exceed a period during which the amount of VOC emissions exceeds the applicable daily VOC emission limits in the rule.

6.1.1.3 Solvent purchase records and ot her such records needed to verify compliance of emission s limits of the rule shall also be kept.

6.1.1.4 Other such records, incl uding the amount of VOC emissions resulting from organic solvent cleaning operations subject to Rule 4663 utilizing photochemically reactive organic solvents, needed to verify compliance of emissions limits of the rule shall also be kept.

6.1.2 On and after March 21, 2008, operators shall

6.1.2.1 Materials List: An operator shal l maintain and have available on site, a current list of materials in use which provides all of the data necessary to evaluate compliance including the following information as applicable:

6.1.2.1.1 Specific manufacturer’s name of solvent-containing material, including solvents, catalysts, and thinners.

6.1.2.1.2 VOC content of each solven t-containing material, as used, in g/l or lb/gal.

6.1.2.2 Material Usage Records – An operator shall maintain usage records on a daily basis that incl ude the following information:

6.1.2.2.1 Specific material.

6.1.2.2.2 Volume of material used (gallons).

6.1.2.2.3 Specific solvents, catalysts and thinners added to

material.

6.1.2.2.4 Volume of each solvent, catalyst and thinner (gallons)

added.

6.1.2.2.5 When the material is a mixture of different materials that are blended by the operator, the mix ratio of the

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batch shall be recorded a nd the VOC content of the

batch shall be calculated and recorded in order to determine compliance with the VOC emission limits.

6.1.3 VOC Emission Control System Records

An operator using a VOC emission control system as a means of complying with this rule shall main tain daily records of key system operating parameters which will demonstrate continuous operation and compliance of the VOC emission c ontrol system during periods of emission-producing activities.

6.1.4 Records Retention

An operator shall retain records required in S ections 6.1.1 through 6.1.3, as applicable, on site for a minimum of five (5) years, make the records available on site during normal busin ess hours to the APCO, ARB, or EPA and submit the records to the APCO, ARB, or EPA upon request.

6.2 Test Methods

6.2.1 Determination of VOC Content

6.2.1.1 The VOC content of organic solvents shall be determined by using EPA Test Method 24 or 24A or by using the manufacturer’s product formulation data and the formula in

Section 3.7.

6.2.1.2 Exempt halogenated VOCs shall be determined by using the ARB Test Method 432 or SCAQMD Test Method 303.

6.2.2 Determination of Overall Captur e and Control Efficiency of VOC

Emission Control Devices

6.2.2.1 The capture efficiency of a VOC emission control system’s collection device(s) shall be determined according to EPA’s “Guidelines for Determining Capt ure Efficiency,” January 9, 1995 and 40 CFR 51, Appendix M, Test Methods 204-204F, as applicable, or any other method approved by EPA, ARB, and the

APCO.

6.2.2.2 The control effi ciency of the VOC emission control system’s

control device shall be determined by using EPA Methods 2, 2A, or 2D for measuring flow rates and EPA Method 25, 25A, or 25B for measuring total gaseous organic concentrations at the inlet and

outlet of the control device. EP A Method 18 or ARB Method 422

shall be used to determine the emissions of exempt compounds.

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The control efficiency of the VOC emission control system’s

control device shall be calculated by using the following equation:

CE CONTROL = [1 – ( VOC OUT / VOC IN )] x 100%

Where:

CE CONTROL = Control Efficiency, in percent

VOC IN = VOC content, in grams/liter, less exempt compounds and water, into the control device

VOC OUT = VOC content, in grams/liter, less exempt compounds and water, out of the control device.

6.2.2.3 For VOC emission control sy stems that consist of a single VOC emission collection device connected to a single VOC emission control device, the overall capture and control efficiency shall be calculated by using the following equation:

CE CAPTURE & CONTROL = [ CE CAPTURE x CE CONTROL ] / 100 %

Where:

CE CAPTURE & CONTROL = Overall Capture and Control Efficiency, in percent

CE CAPTURE = Capture Efficiency of the collection device, in percent, as determined in Section 6.2.2.1

CE CONTROL = Control Efficiency of the control device, in percent, as determined in Section 6.2.2.2.

6.2.3 Determination of VOC Emissions

6.2.3.1 The emissions of VOCs, measured and calculated as carbon, shall be determined by using EPA Test Method 25, 25A, or 25B, as applicable. EPA Test Met hod 18 or ARB Method 422 shall be used to determine the emissions of exempt compounds.

6.2.3.2 Total VOC emissions per day shall be determined for each source operation by using the following equation:

454 1001

1 1 / %)/( x E

Total ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛

− + ⎟ ⎠ ⎞ ⎜ ⎝ ⎛

= 

# ∑∑

= = CE VLVL n

m mm k

i ii

Where: ETotal = Total VOC emissions, in pounds per day Li = Liters per day used of the “i”th organic solvent

that is uncontrolled Vi = Grams of VOC per liter of material of the “i”th organic solvent that is uncontrolled Lm = Liters per day used of the “m”th organic solvent

that is controlled

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Vm = Grams of VOC per liter of material of the “m”th organic solvent that is controlled CE = Overall capture and co ntrol efficiency of the control device, in percent, as determined in

Section 6.2.2.3.

6.2.4 Multiple Methods of Determination

VOC emissions and overall capture and control efficiency determined to exceed any limits established by this ru le through the use of any of the above-referenced test methods and equations shall constitute a violation of

the rule.

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