1. Collision Repair - Surface Preparation 9-1(a) Pollution Prevention in Surface Preparation n Use water-based cleaners –Use water-based cleaners to remove stubborn contaminants. –New water-based cleaners: »Stronger than traditional car wash soap »Not as toxic as petroleum-based solvents. –Make sure that the cleaning product is compatible with the surface to be cleaned.

2. Collision Repair - Surface Preparation 9-1(b) Pollution Prevention in Surface Preparation »Many water-based cleaners are not recommended for use on water-based or acrylic lacquer finishes. »Always consult the product manufacturer for specific information. n Use solvent-based cleaners ONLY as a last resort –To remove heavy silicon and grease contamination.

3. Collision Repair - Surface Preparation 9-1(c) Pollution Prevention in Surface Preparation –Use only sparingly, spot clean. –Replace the lid on the solvent containers when not in use. –Keep solvent-laden dirty rags in a closed container prior to disposing. »may be hazardous (flammable) n Avoid painting sequences that require multiple pre-paint cleaning operations.

4. Collision Repair - Surface Preparation 9-1(d) Pollution Prevention in Surface Preparation n Conserve water when washing vehicles »Install water saving devices such as pressure- increasing nozzles n Discharge wastewater to the city sewer. n Do not dump wastewater outdoors n Do not discharge to a septic system or storm drain.

5. Collision Repair - Surface Preparation 9-1(e) Pollution Prevention in Surface Preparation n Reduce waste by using launderable cloth rags instead of disposable ones for surface cleaning. – All rags should be sized for the job -- cutting rags in half or in quarters can reduce waste.

6. Collision Repair - Surface Preparation 9-2 Wastes Generated in Surface Preparation n Wastewater & Sludge –May contain grease, oil, dirt, soaps and solvents. n Rags –May contain grease, paint, and solvents. n Solvents Cleaners n Paint Strippers & Paint Dust