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BoReTech)e • DISPOSAL OPTION #2: A compressed gas cylinder may also be recycled through a scrap metal recycler. In order to do so, all cylinders must be completely empty and have their valves removed -- it is recommended that you contact the scrap metal recycler prior to drop-off to see if they have special requirements. • DISPOSAL OPTION #3: If you are unable to identify the manufacturer of the cylinder or it seems suspicious, call a specialist to determine its contents -- an unmarked and/or suspicious cylinder should always be considered extremely hazardous. The characteristics that determine if a cylinder is suspicious are: a cylinder that is unmarked, a cylinder that is marked but its physical characteristics do not match the label, or any cylinder that shows signs of corrosion, backfilling, or degradation. If the pressure inside approaches atmospheric pressure, they are not regulated as hazardous wastes, although cutting into them without proper care can lead to an explosion -- especially if the residual gas is flammable. If the valve is damaged so that it cannot be determined whether they contain gases or not, they should be assumed to be hazardous. PAINT Paint wastes are generated from incomplete use of paint, malfunctioning equipment, overspray and spills. Paint waste should be reused, recycled, or lastly, if no other alternative exists, disposed of as hazardous waste. Latex Paints Although latex paints pose much less risk to the environment than they did some years ago, individual types may still be hazardous, so the best plan is to treat all paint as hazardous. Compounds used in the formulation of some latex paint can cause it to be toxic to many aquatic organisms. Older paint may have lead or other metals in the coloring (pigments), and chemicals that are added to prevent mildew frequently make paint products hazardous. Residual organic compounds (solvents) could also be a threat. When you need to rinse brushes and painting equipment, either do it in the sink or in a basin that can capture the rinsewater, so that you can dispose of it to the sanitary sewer (sink or toilet). Sanitary sewer systems can digest latex rinsewater into harmless products. Do not pour undiluted latex paint into the sanitary sewer or storm drains. The best way to dispose of latex paint is to use it in the manner that it was intended. Spreading latex paint for the purpose of drying and disposing of it is not allowed. If you have paint left over from your job that is still usable, someone else might be able to use it. In all cases, to avoid accumulating excess paints, follow a policy of "buy what you need, use what you buy." • Paint leftovers from painting operations can be mixed; however, do not mix recyclable latex paint with oil-based paint, solvents or thinners. • It is important to properly store all latex paint to maintain its liquid form. Once the paint hardens, it is no longer recyclable. Boretech Hazardous Materials & Hazardous Waste Management Operations Plan Page 132