Hazardous materials underpin our economy. We use oil and natural gas to heat and cool homes and businesses, produce electricity, transport commercial products, travel to work or recreation, and provide the feedstock for many other commodities. We use hazardous materials to purify our drinking water, fertilize crops, produce medicines, and manufacture clothing and many other products. Hazardous materials are essential to our quality of life. They also introduce inherent risks to the public, the environment, and property when they are transported.