100 GENERAL

101 - PURPOSE

110 - EXEMPTIONS

200 DEFINITIONS

201 - CONVEYORIZED DEGREASER

202 - DEGREASER

203 - EXEMPT COMPOUND

204 - FREEBOARD HEIGHT

205 - FREEBOARD RATIO

206 - LEAK

207 - LIP EXHAUST

208 - LOW VOLATILITY SOLVENT

209 - MAKEUP SOLVENT

210 - NON-VAPOR DEGREASER

211 - OPEN-TOP VAPOR DEGREASER

212 - OSHA

213 - REFRIGERATED FREEBOARD CHILLER

214 - REMOTE RESERVOIR DEGREASER

215 - SOLVENT

216 - STATIONARY SOURCE

217 - VOLATILE ORGANIC COMPOUND (VOC)

218 - VOLATILE SOLVENT

219 - WIPE CLEANING

220 - WORKLOAD

300 STANDARDS

301 - GENERAL EQUIPMENT REQUIREMENTS

302 - NON-VAPOR DEGREASERS; EQUIPMENT REQUIREMENTS

303 - VAPOR DEGREASERS; EQUIPMENT REQUIREMENTS

304 - VAPOR DEGREASERS; SAFETY SWITCHES

305 - CONVEYORIZED DEGREASERS

306 - GENERAL OPERATING REQUIREMENTS

307 - LIP EXHAUST

308 - EMISSION CONTROL SYSTEM REQUIREMENTS

400 ADMINISTRATIVE REQUIREMENTS

401 - COMPLIANCE SCHEDULE

402 - CALCULATION FOR DETERMINATION OF VOC CONTENT PER VOLUME OF SOLVENT

403 - OPERATION AND MAINTENANCE PLAN

500 MONITORING AND RECORDS

501 - USAGE RECORDS

502 - TEST METHODS

(110.1) The provisions of this rule do not apply to wipe cleaning.

(110.2) The provisions of Section 302 of this rule do not apply to non-vapor degreasers which have an air-solvent interface area less than or equal to 1.0 m², or to remote reservoir degreasers using a non-volatile solvent spray which is drained into the remote reservoir concurrently with the degreasing operation.

(110.3) The provisions of Section 306.7 of this rule do not apply to open-top vapor degreasers where solvent flow is conducted pursuant to Section 306.10.b. and liquid solvent does not splash above the air-vapor interface.

200 DEFINITIONS

201 - CONVEYORIZED DEGREASER: Any continually loaded, conveyorized degreaser, using solvent that is maintained either above or below the initial boiling point temperature of the solvent.

202 - DEGREASER: A container that contains solvent or into which solvent is sprayed and concurrently drained, used to remove oil, grease, soil, coating, dirt or other undesirable matter from workloads.

203 - EXEMPT COMPOUND: For the purposes of this rule, "exempt compound" has the same meaning as in Rule 101--GENERAL PROVISIONS AND DEFINITIONS.

204 - FREEBOARD HEIGHT:

(204.1) For non-vapor degreasers, freeboard height means the distance from the top of the solvent to the top of the tank.

(204.2) For vapor degreasers, freeboard height means the distance from the solvent vapor-air interface to the top of the degreaser.

205 - FREEBOARD RATIO: The freeboard height divided by the smaller of the inside length or the inside width of the degreaser's evaporative surface area.

206 - LEAK: Three or more drops of liquid solvent per minute.

207 - LIP EXHAUST: A system which collects solvent vapors escaping from the top of a degreaser and directs them away from operating personnel.

208 - LOW VOLATILITY SOLVENT: Any solvent with an initial boiling point which is greater than 248^oF (120^oC), as determined pursuant to Section 502.1.

209 - MAKEUP SOLVENT: The solvent added to the degreaser to replace solvent lost through evaporation or other means.

210 - NON-VAPOR DEGREASER: Any degreaser using solvent which, if heated, is maintained below the initial boiling point temperature of the solvent.

211 - OPEN-TOP VAPOR DEGREASER: Any batch-loaded degreaser using solvent which is maintained above the initial boiling point temperature of the solvent. Degreasing occurs through the condensation of the resultant solvent vapor onto the surface of the workload.

212 - OSHA: Occupational Safety and Health Administration.

213 - REFRIGERATED FREEBOARD CHILLER: A secondary cooling coil mounted above the primary condenser which provides a chilled air blanket above the solvent vapor-air interface to cause the condensation of additional solvent vapor, thereby increasing vapor control efficiency.

214 - REMOTE RESERVOIR DEGREASER: A non-vapor degreaser with a tank which is completely enclosed except for a solvent return opening no larger than 15.50 square inches (100 square centimeters) which allows used solvent to drain into it from a separate solvent sink or work area and which is not accessible for soaking workloads.

215 - SOLVENT: VOC-containing compounds which are used as diluents, thinners, dissolvers, viscosity reducers, or cleaning agents.

216 - STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits or may emit any affected pollutant directly or as a fugitive emission.

(216.1) Building, structure, facility, or emissions unit includes all pollutant emitting activities which:

a. Belong to the same industrial grouping, and

b. Are located on one property, or two or more contiguous properties, and

c. Are under the same or common ownership, operation, or control, or which are owned or operated by entities which are under common control.

(216.2) Pollutant emitting activities shall be considered as part of the same industrial grouping if:

a. They belong to the same two-digit Standard Industrial Classification (SIC) code, or

b. They are part of a common production process, which includes industrial processes, manufacturing processes and any connected processes involving a common material.

217 - VOLATILE ORGANIC COMPOUND (VOC): For the purposes of this rule, "volatile organic compound" has the same meaning as in Rule 101--GENERAL PROVISIONS AND DEFINITIONS.

218 - VOLATILE SOLVENT: Any solvent which is not defined as a low volatility solvent pursuant to Section 208.

219 - WIPE CLEANING: That method of cleaning which utilizes a material such as a rag wetted with a solvent, coupled with a physical rubbing process to remove contaminants from metal surfaces.

220 - WORKLOAD: The objects put in a degreaser for the purpose of removing oil, grease, soil, coating, dirt or other undesirable matter from the surface of the objects.

300 STANDARDS

301 - GENERAL EQUIPMENT REQUIREMENTS: Any person who uses a degreaser shall utilize the following equipment:

(301.1) An apparatus or cover which prevents the solvent from evaporating when not processing work in the degreaser.

a. For non-vapor degreasers using volatile solvent, or solvent that is agitated, the cover shall be designed so that it can be opened and closed easily with one hand.

b. For open-top vapor degreasers, the cover shall be designed such that it can be opened and closed easily without disturbing the vapor zone.

c. For conveyorized degreasers, a cover shall be provided for closing off the entrance and exit during shutdown hours.

(301.2) A facility for draining cleaned parts such that the drained solvent is returned to the container.

(301.3) A permanent, conspicuous label which summarizes operating requirements contained in Sections 304 through 306 of this rule.

302 - NON-VAPOR DEGREASERS; EQUIPMENT REQUIREMENTS: A person shall operate non-vapor degreasers, including remote reservoirs (except as noted in Section 110.2), using one of the following control devices:

(302.1) Non-vapor degreasers shall operate with a freeboard ratio equal to or greater than 0.75 if using solvents which are:

a. Agitated, or

b. Heated above 122^oF (50^oC), or

c. Volatile.

(302.2) Non-vapor degreasers using only low volatility solvents which are not agitated shall operate with a freeboard height of at least 6 inches.

(302.3) A water cover may be used as an acceptable alternative to Sections 302.1 and 302.2 if the solvent is insoluble in water and has a specific gravity greater than 1.

303 - VAPOR DEGREASERS; EQUIPMENT REQUIREMENTS: A person shall operate vapor degreasers using one of the following control devices:

(303.1) A freeboard ratio greater than or equal to 0.75; or

(303.2) A refrigerated freeboard chiller for which the chilled air blanket temperature (^oF) at the coldest point on the vertical axis in the center of the air-vapor interface shall be no greater than 30% of the initial boiling point (^oF) of the fresh solvent used.

(303.3) A carbon adsorption system which ventilates the air-vapor interface at a minimum rate of 15 m³/min/m², but not greater than 20 m³/min/m², unless necessary to meet Federal and State OSHA requirements, with a solvent vapor concentration exiting the exhaust duct of the carbon adsorber of less than 25 ppm solvent averaged over one complete adsorption cycle.

304 - VAPOR DEGREASERS; SAFETY SWITCHES: If a vapor degreaser is used, then the following equipment shall be utilized.

(304.1) A device which shuts off the sump heater if the condenser coolant stops circulating or becomes warmer than specified;

(304.2) For degreasers of the spray type, a device which prevents spray pump operation unless the solvent vapor level is at the designed operating level; and

(304.3) A device (of the manual reset type) which shuts off the sump heater if the solvent vapor level rises above the designed operating level.

305 - CONVEYORIZED DEGREASERS: In addition to the requirements of Sections 302 and 303, a person shall not operate a conveyorized degreaser unless it is equipped with both of the following control devices:

(305.1) Either a drying tunnel or other means such as a rotating basket, sufficient to prevent cleaned parts from carrying out solvent liquid or vapor, and

(305.2) Minimized opening: entrances and exits should silhouette workloads so that the average clearance between parts and the edge of the degreaser opening is either less than 4 inches (10 cm) or less than 10 percent of the width of the opening.

306 - GENERAL OPERATING REQUIREMENTS: Any person who uses a degreaser must conform to the following operating requirements:

(306.1) Operate and maintain the degreaser and emission control equipment in proper working order.

(306.2) Do not allow any solvent to leak from any portion of the degreaser.

(306.3) Do not store or dispose of any solvent from the degreaser, including waste solvent, in such a manner as will cause or allow its evaporation into the atmosphere.

(306.4) If distillation recovery of waste solvent is performed, solvent residues shall not contain more than 10 percent solvent by volume after distillation.

(306.5) Do not remove or open any device designed to cover the solvent unless processing work in the degreaser or performing maintenance on the degreaser.

(306.6) Drain cleaned parts after cleaning until dripping ceases (non-vapor degreaser only).

(306.7) If using a solvent flow, use only a continuous, fluid stream (not a fine, atomized, or shower type spray) at a pressure which does not cause liquid solvent to splash outside of the degreaser.

(306.8) Perform solvent agitation, where necessary, by means other than air agitation.

(306.9) Do not degrease porous or absorbent materials such as cloth, leather, wood, or rope.

(306.10) For vapor degreasers:

a. Workloads shall not occupy more than half of the degreaser's evaporative surface area, and

b. Solvent spray shall be kept at least 4 inches below the air-vapor interface.

c. When starting the degreaser, the cooling system shall be turned on before, or simultaneously with, the sump heater.

d. When shutting down the degreaser, the sump heater shall be turned off before, or simultaneously with, the cooling system.

e. The degreaser shall be covered whenever the cooling system is off.

(306.11) A person shall minimize solvent carry-out by the following measures, as applicable:

a. Rack workload to facilitate drainage;

b. Move workload in and out of the degreaser at less than 3.3 m/min (11 ft/min);

c. Degrease the workload in the vapor zone until condensation ceases;

d. Allow workload to dry within the degreaser until visually dry;

e. For manual operation, tip out any pools of solvent remaining on the workload before removing it from the degreaser.

307 - LIP EXHAUST: Effective February 23, 1993, a lip exhaust system shall not be added to any degreaser, unless it is vented to an emission control system, pursuant to Section 308. The lip exhaust shall be turned off when the degreaser is covered.

308 - EMISSION CONTROL SYSTEM REQUIREMENTS: Any person or stationary source subject to this rule may use an emissions control system as an alternative to Sections 302, 303.1, or 303.2, provided that the system has an overall control efficiency (the collection efficiency multiplied by the control efficiency) of at least 85 percent on a mass basis, as determined pursuant to Sections 502.2 and 502.3. The emission collection system shall have a ventilation rate not greater than 20 cubic meters per minute per square meter over the total area of the degreaser's evaporative surface area, unless the rate must be changed to meet Federal and State OSHA requirements.

400 ADMINISTRATIVE REQUIREMENTS

401 - COMPLIANCE SCHEDULE: Any person or stationary source subject to this rule, including previously exempt sources, shall be in compliance with Sections 302.2, 303.2, and 501 by August 24, 1993.

402 - CALCULATION FOR DETERMINATION OF VOC CONTENT PER VOLUME OF SOLVENT: The volume of solvent is defined as the volume of the original solvent, plus any VOC-containing material added to the original solvent. The weight of VOC per volume of solvent shall be calculated by the following equation.

(W_v - W_w - W_ec) / (V_s)



Where:

W_v = weight of all volatile compounds.

W_w = weight of water.

W_ec = weight of compounds listed as exempt in Section 203 from the definition of  VOC.

V_s = volume of solvent.

403 - OPERATION AND MAINTENANCE PLAN: Any person using an approved emission control device pursuant to Section 308 as a means of complying with this rule, as provided in Sections 302, 303.1, or 303.2, must submit, with the application for Authority to Construct, pursuant to Rule 201, General Permit Requirements, an Operation and Maintenance Plan for the emission control device to the Air Pollution Control Officer for approval. Plans for emission control devices installed as of February 23, 1993, if not previously submitted, must be submitted by August 24, 1993 and receive approval of the Air Pollution Control Officer. The Plan shall specify operation and maintenance procedures which will demonstrate continuous operation of the emission control device during periods of emissions-producing operations. The Plan shall also specify which records must be kept to document these operation and maintenance procedures. These records shall comply with the requirements of Sections 501.2 and 501.3. The Plan shall be implemented upon approval of the Air Pollution Control Officer.

500 MONITORING AND RECORDS

501 - USAGE RECORDS: In addition to any existing permit conditions issued pursuant to Rule 201, effective February 23, 1993 any person subject to this rule shall comply with the following requirements:

(501.1) USAGE AMOUNTS: The person shall record on a quarterly basis the type and total volume for the stationary source of makeup solvent used for all cleaners subject to this rule.

(501.2) CONTROL EQUIPMENT: Any person using an emission control system pursuant to Section 308 as a means of complying with this rule shall maintain such records as required by the Operation and Maintenance Plan in Section 403 on a daily basis.

(501.3) DURATION OF RECORDS: Such records shall be maintained on-site for two years and made available for review by the Air Pollution Control Officer upon request.

502 - TEST METHODS

(502.1) DETERMINATION OF BOILING POINT: The initial boiling point of solvents shall be determined in accordance with ASTM D 1078-86.

(502.2) DETERMINATION OF CONTROL EFFICIENCY: Control efficiency of control equipment shall be determined in accordance with EPA Method 25.

(502.3) DETERMINATION OF COLLECTION EFFICIENCY: Collection efficiency of the collection system shall be determined in accordance with EPA Guidelines for Developing Capture Efficiency Protocols, 55 Federal Register 26865, June 29, 1990.

(502.4) DETERMINATION OF VOLUMETRIC FLOWRATE: Volumetric flowrate shall be determined in accordance with EPA Methods 2, 2A, 2C, and 2D.

(502.5) DETERMINATION OF VOC CONTENT: VOC content of solvents shall be determined in accordance with EPA Method 24 and Sections 402 and 502.6 of this rule.

(502.6) DETERMINATION OF COMPOUNDS EXEMPT FROM VOC DEFINITION: Compounds exempted from the VOC definition, as listed in Section 203 of this rule, shall be determined in accordance with ASTM D 4457-85 or ARB Method 432. If any of the perfluorocarbons are being claimed as exempt compounds, the person making the claim must state in advance which compounds are present, and the EPA-approved test method used to make the determination of these compounds.