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Chapter 4-Site-Specific Industrial Storm Water BMPs <br />• <br />I What Are They <br />Signs and labels identify problem areas or hazardous materials at a facility. Warning signs, often <br />found at industrial facilities, are a good way to suggest caution in certain areas. Signs and labels <br />can also provide instructions on the use of materials and equipment. Labelling is a good way to <br />organize large amounts of materials, pipes, and equipment, particularly on large sites. <br />Labels tell material type and container contents. Accurate labeling can help facilities to quickly <br />identify the type of material released so facility personnel can respond correctly. <br />Two effective labeling methods include color coding and Department of Transportation (DOT) <br />labeling. Color coding is easily recognized by facility personnel and simply involves painting/coating <br />or applying an adhesive label to the container. Color codes must be consistent throughout the <br />facility to be effective, and signs explaining the color codes should be posted in all areas. <br />DOT requires that labels be prominently displayed on transported hazardous and toxic materials. <br />Labeling required by DOT could be expanded to piping and containers, making it easy to recognize <br />materials that are corrosive, radioactive, reactive, flammable, explosive, or poisonous. <br />• <br />FIGURE 4.8 SIGN ON DRUM INDICATING FLAMMABILITY <br />I When and Where to Use Them <br />Signs and labels can be used at all types of facilities. Areas where they are particularly useful are <br />material transfer areas, equipment areas, loading and unloading areas, or anywhere information <br />might prevent contaminants from being released to storm water. <br />4-44