SAN DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT
RULE 67.20 - MOTOR VEHICLE AND MOBILE EQUIPMENT REFINISHING OPERATIONS
(Adopted November 13, 1996 / Effective August 13, 1997)
(a) APPLICABILITY
(b) EXEMPTIONS
(i) Touch-up coatings.
(ii) Graphic design applications.
(iii) Coatings applied using non-refillable hand-held aerosol spray containers.
(iv) Body fillers.
(v) Bedliner coatings.
(i) Not more than 50 gallons per year of all such noncompliant coatings are used at the stationary source; and
(ii) Not more than 30 vehicles are restored in whole or in part per calendar year at the stationary source; and
(iii) Each vehicle restoration takes not less than sixty days; and
(iv) No other motor vehicle or mobile equipment finishing or refinishing operations occur at the same stationary source.
It shall be the responsibility of any person claiming this exemption to maintain monthly records of the number of vehicles restored, the number of days required for each restoration, and the coating usage along with a copy of the records provided by the manufacturer or supplier as specified in Subsection (d)(10). These records shall be retained on site for at least three years and made readily available to the District upon request.
(c) DEFINITIONS
For the purposes of this rule, the following definitions shall apply:

where:
VOC(2-stage) = the average VOC content, as applied, of a two-stage coating system.
VOC(3-stage) = the average VOC content, as applied, of a three-stage coating system.
VOC(4-stage) = the average VOC content, as applied, of a four-stage coating system.
VOCbc = the VOC content, as applied, of a basecoat.
2 VOCcc = two times the VOC content, as applied, of a clearcoat.
VOCmc = the VOC content, as applied, of a midcoat.
VOCgc = the VOC content, as applied, of a groundcoat.
and VOC(2-stage), VOC(3-stage), VOC(4-stage), VOCbc, 2 VOCcc, VOCmc, VOCgc have units of weight per volume of coating less water and exempt compounds.
(d) STANDARDS
(i) A person shall not finish or refinish Group I vehicles, or Group II vehicles and equipment where color match is required, using any coating which has a VOC content in excess of the following limits:
|
VOC content per volume of coating as applied, less water and less exempt compounds |
|
Coating Category |
gram/liter |
(lb/gal) |
| Pretreatment Coating |
780 |
(6.5) |
| Precoat |
600 |
(5.0) |
| Primer/Primer Surfacer |
420 |
(3.5) |
| Primer Sealer |
420 |
(3.5) |
| Topcoats |
|
|
| Metallic/Iridescent |
520 |
(4.3) |
| Multicolor |
685 |
(5.7) |
| Multistage |
540 |
(4.5) |
| Multicolor Multistage |
480 |
(4.0) |
| All Other Topcoats |
420 |
(3.5) |
| Specialty Coating |
840 |
(7.0) |
(ii) Color match is allowed for roll bars, truck bodies, utility bodies, and camper shells that are installed, or will be installed, on Group I vehicles. Color match is allowed for any other Group II vehicles and equipment provided that a request to allow color match is approved in writing by the Air Pollution Control Officer.
(iii) A person shall not finish or refinish Group II vehicles and equipment where color match is not required, including full body paint jobs, using any coating which has a VOC content in excess of the following limits:
|
VOC content per volume of coating as applied, less water and less exempt compounds |
|
Coating Category |
gram/liter |
(lb/gal) |
| Pretreatment Coating |
780 |
(6.5) |
| Precoat |
600 |
(5.0) |
| Primer/Primer Surfacer |
420 |
(3.5) |
| Primer Sealer |
420 |
(3.5) |
| Topcoats |
|
|
| Metallic/Iridescent |
420 |
(3.5) |
| Multicolored |
685 |
(5.7) |
| Camouflage Coating |
420 |
(3.5) |
| All Other Topcoats |
420 |
(3.5) |
| Specialty coating |
840 |
(7.0) |
(iv) A person shall not apply temporary protective coatings unless the coating contains 60 grams or less of VOC per liter of material, as applied.
Use of precoats shall not exceed 25% of the aggregate volume, as applied, of all low VOC primers and primer surfacers applied at the stationary source, on a monthly basis.
Use of all specialty coatings except antiglare/safety coatings shall not exceed the larger of the following limits:
(i) Five percent by volume, as applied, of all motor vehicle and mobile equipment refinishing or finishing coatings used at the stationary source, on a monthly basis; or
(ii) Three gallons per month, as applied.
The requirements of Subsections (d)(1), (d)(2), and (d)(3) may be met using an Alternative Emission Control Plan (AECP) that has been approved pursuant to Rule 67.1.
A person shall not apply any coating containing VOC to any Group I vehicles or Group II vehicles and equipment except by means of the following application methods:
(i) Electrostatic spray application, or
(ii) High-volume low-pressure (HVLP) spray, or
(iii) Flow coat application, or
(iv) Dip coat application, or
(v) Roll coat, or
(vi) Hand application methods, or
(vii) Other coating application methods that are demonstrated to have transfer efficiency at least equal to one of the above application methods, and which are used in such a manner that the operating parameters under which they were demonstrated to achieve such transfer efficiency are permanent features of the method. Such coating application methods shall be approved in writing prior to use by the Air Pollution Control Officer.
(i) A person shall not use any material for surface preparation, excluding surface preparation of replacement plastic parts, unless:
(A) The material contains 200 grams or less of VOC per liter of material (1.67 lb/gal), as applied; or
(B) The material has an initial boiling point of 190û C (374û F) or greater; or
(C) The material has a total VOC vapor pressure of 20 mm Hg or less, at 20û C (68û F).
(ii) A person shall not use any material for surface preparation of replacement plastic parts unless it contains 780 grams or less of VOC per liter of material (6.5 lb/gal), as applied, or has a total vapor pressure of VOC of 45 mm Hg or less at 68¡F (20¡C).
A person shall not use VOC-containing materials to clean coating application equipment used in motor vehicle and mobile equipment refinishing operations unless:
(i) The cleaning material contains 200 grams or less of VOC per liter of material; or
(ii) The cleaning material has an initial boiling point of 190û C (374û F) or greater; or
(iii) The cleaning material has a total VOC vapor pressure of 20 mm Hg or less, at 20û C (68û F); or
(iv) The cleaning material is flushed or rinsed through the application equipment in a contained manner that will minimize evaporation into the atmosphere; or
(v) The application equipment or equipment parts are cleaned in a container which is open only when being accessed for adding, cleaning, or removing application equipment or when cleaning material is being added, provided the cleaned equipment or equipment parts are drained to the container until dripping ceases; or
(vi) A system is used that totally encloses the component parts being cleaned during the washing, rinsing, and draining processes; or
(vii) Other application equipment cleaning methods that are demonstrated to be as effective as any of the equipment described above in minimizing the emissions of VOC to the atmosphere, provided that the device has been approved prior to use by the Air Pollution Control Officer.
A person shall not use spray application equipment or any other means to dispose of waste coatings, coating components, surface preparation materials, or cleaning materials into the air, except when momentarily purging coating material from a spray applicator cap immediately before or after applying the coating material.
A person shall not solicit or require the use, or specify the application, of a coating on Group I vehicles or Group II vehicles and equipment if such use or application results in a violation of any provision of this rule. This prohibition is applicable to any written or oral contract under the terms of which any coating subject to this rule is to be applied to any motor vehicle or mobile equipment within San Diego County.
Any person who manufactures, sells, offers for sale, or supplies any coating, thinner, coating additive, surface preparation material, or cleaning material for use in motor vehicle and mobile equipment refinishing operations in San Diego County shall provide in writing the following information to customers:
(i) The manufacturer and manufacturer identification of each coating or multicomponent coating component, surface preparation material, and equipment cleaning material; and
(ii) The manufacturer recommended mix ratio of components of each coating; and
(iii) For each coating or multicomponent coating component, the weight of VOC per volume of coating less water and exempt compounds and per volume of material (expressed in grams per liter or pounds per gallon), as sold; and
(iv) For each coating, the weight of VOC per volume of coating less water and exempt compounds (expressed in grams per liter or pounds per gallon) for each coating as applied according to the manufacturer's recommendation; and
(v) For each surface preparation or equipment cleaning material, the weight of VOC per volume of material ( in grams per liter or pounds per gallon), the total vapor pressure, or initial boiling point, as applicable.
(e) CONTROL EQUIPMENT
(i) Has been installed in accordance with an Authority to Construct; and
(ii) Includes an emission collection system which captures the organic gaseous emissions generated from coating, surface preparation, and/or cleaning operations, as applicable, and transports the captured emissions to an air pollution control device; and
(iii) Has an overall control efficiency of at least 85% by weight.
(i) Identify all key system operating parameters. Key system operating parameters are those necessary to ensure compliance with Subsection (e)(1)(iii) such as temperatures, pressures, or flow rates; and
(ii) Include proposed inspection schedules, anticipated ongoing maintenance, and proposed recordkeeping practices regarding the key system operating parameters.
Upon approval of the Operation and Maintenance Plan by the Air Pollution Control Officer, the person shall comply with the provisions of the approved plan thereafter.
(f) RECORDKEEPING
All records shall be retained on site for at least three years and made readily available to the District upon request. Any person subject to the provisions of this rule shall maintain records, as applicable, in accordance with the following:
Any person subject to the provisions of Subsections (d)(1), (d)(2), (d)(3), (d)(6), or (d)(7), or any combination thereof, shall maintain records in accordance with the following:
(i) Maintain a current list of coatings, coating additives, thinners, surface preparation materials and equipment cleaning materials in use. This list shall provide all the data necessary to evaluate compliance, including, but not limited to:
(A) Type and applicable coating category specified in Subsection (d)(1) of each coating used, including manufacturer and manufacturer identification.
(B) Identification of all low VOC primers or primer surfacers as defined in Subsection (c)(25), if any.
(C) Type of each coating additive, thinner, surface preparation material, and equipment cleaning material used, including manufacturer and manufacturer identification.
(ii) Maintain monthly or daily records showing the manufacturer and manufacturer identification and the amount of each coating or coating component used, the actual mix ratio of components used in each coating, the type (Group I or Group II) of motor vehicle or mobile equipment to which each coating was applied, and whether or not color match was required.
(iii) Maintain monthly or daily records showing the manufacturer, manufacturer identification and amount of each surface preparation and equipment cleaning material used.
(iv) Maintain a copy of the records provided by the manufacturer or supplier as specified in Subsection (d)(10).
Any person using control equipment pursuant to Section (e) of this rule shall:
(i) Maintain records in accordance with Subsection (f)(1); and
(ii) For all coating, cleaning, and/or surface preparation materials not in compliance with Subsections (d)(1), (d)(6), or (d)(7), maintain daily records of the amount of each coating or each coating component for multicomponent coatings, surface preparation and cleaning material used; and
(iii) Maintain daily records of key system operating parameters as approved in the Operation and Maintenance plan. Such records shall be sufficient to document continuous compliance with Subsection (e)(1)(iii) during periods of emission producing activities.
Any person subject to the provisions of Subsection (d)(10) shall maintain records of all coatings, thinners, coating additives, surface preparation materials, or cleaning materials sold for use in, or delivery to, San Diego County. For each material sold, these records shall show the name and business address of the purchaser, the material manufacturer and manufacturer identification, and the amount of material sold.
(g) TEST METHODS
(h) COMPLIANCE SCHEDULE
(i) By August 13, 1997, submit to the Air Pollution Control Officer an application for Authority to Construct and Permit to Operate an air pollution control system meeting the requirements of Section (e).
(ii) By May 13, 1998, issue purchase orders for the basic control device and other long delivery time components necessary to comply with Section (e).
(iii) By May 13, 1999, demonstrate compliance with Section (e).