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Automotive Painting Information
Shop Tour Stop #2 |
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The following questions and guidance are taken from the Consolidated Screening Checklist for Automotive Repair Facilities Guidebook.
A “√” next to a response in the guide indicates that is the preferred response in terms of environmental compliance. If you select a response without a “√”, you may still be in compliance; however, you should verify that you are in compliance by contacting the appropriate federal or state regulatory agency and discussing your activity with them. AUTOMOTIVE PAINTING Does the facility conduct painting/paint removal operations? The collision repair and paint shop should be painting in appropriate areas within the shop, i.e., paint booths. Note: The facility should verify that there are no drains in the areas where painting occurs.
Does the facility have air permits? State or local air quality authorities usually issue air pollution permits for certain operations, i.e., automotive painting operations. Check with your state or local air quality authority for applicability and specific requirements.
If "yes" to previous question, does the facility meet air permit conditions?
Does the facility prepare vehicle surfaces by shot or grit blasting, grinding or sanding? In preparation for painting, paint/collision repair shops remove old paint from automobiles by shot or grit blasting. Grinding and sanding are often used to prepare the surface to be painted.
Does the facility collect paint chips and metal dusts? An effective practice to assure the optimum collection of paint dusts and chips is to blast and sand within a booth designed with a dust collection control device (e.g., baghouse). Blasting, grinding or sanding operations indoors without dust collection and air pollution controls may expose employees to levels of airborne dust in excess of the OSHA permissible limits for personal exposure to heavy metals, such as lead and cadmium. Conducting operations outdoors allows dust and paint debris to disperse into the environment. Local and state air pollution regulations may not allow this. Check with your state or local air quality authorities.
How does the facility manage stripped paint chips and baghouse dusts? All materials collected from shot and grit blasting and sanding/grinding operations may be classified as hazardous waste, depending on the previous paint coatings. If the previous paints contained lead or chromium, the waste chips and dusts may be hazardous waste, depending on Toxicity Characteristic Leaching Procedure (TCLP) test results.
Paint labels or product data sheets (or material safety data sheets [MSDSs]) should contain the VOC (volatile organic compounds) content of the paint. In general, VOC content greater than or equal to 5 lbs/gallon is high, between 4 and 5 lbs/gallon is low, and below 4 lbs/gallon is very low. In some areas, the automotive paint shop may be restricted to only low VOC paints. Check with your local or state air quality authority.
Does the facility prepare paint (quantity) according to the job? To minimize leftover paint, the shop should calculate the amount of paint needed for each scheduled job, as opposed to preparing a large quantity of paint. If there is a little paint leftover, the shop might consider giving the leftover to their customer for touch-up.
Does the facility take measures to minimize overspray? Automotive painting shops can use a variety of application equipment to minimize overspray, i.e., air-assisted; airless, high-volume, low pressure turbine; air atomized electrostatic; and airless, or electrostatic application techniques. Another technique is the use of high transfer efficiency spray applicators. High efficiency sprayers should have a label “HVLP” on the gun. This is not yet a federal regulatory requirement but may be required in your state.
When not in use, does the facility store paints in labeled containers? When not in use, the automotive shop must ensure that paints are properly contained and labeled. The containers must be closed with tight-fitting lids, and stored so that a spill would not reach a drain or otherwise leave the facility. Container labels must indicate contents.
How does the facility manage used paints and paint waste? The automotive paint/collision shop should not bury or discard waste paint cans, residuals, or unused paint products on-site. Organic solvent-based paints and residuals may be hazardous wastes and require manifesting, storage, transportation, and disposal in full compliance with hazardous waste regulations. Aerosol cans that are empty and depressurized (i.e., all propellant is discharged) may be classified as nonhazardous solid waste for off-site disposal.
How does the facility dispose of spray paint booth air filters? The automotive paint shop must characterize their spray booth air filters. Depending upon the results of the characterization, hazardous or non-hazardous, the shop must dispose the filters accordingly. Filters characterized as non-hazardous can be disposed as a solid waste and into a municipal landfill. Filters characterized as hazardous must be managed as a hazardous waste.
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Source: U.S. EPA Office of Enforcement and Compliance Assurance, EPA 305-B-03-004, October 2003.
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