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Storing materials or conducting processes outdoors means that items such as raw materials, chemicals, equipment, or products are kept outside, exposed to the elements, or that certain activities like mixing, cutting, or painting are performed outdoors. These outdoor activities can affect how stormwater runoff is managed and may require specific environmental controls.

Discharging stormwater and/or process water refers to the release of water from your operation into the environment, usually through drains, ditches, or directly into water bodies. Stormwater is runoff from rain or snow that can pick up pollutants as it flows over your site, while process water is used in industrial or manufacturing processes and may contain contaminants. If your operation channels water offsite, it may be considered a discharge.

A "hazardous material" is identified as anything that has a corresponding Safety Data Sheet (SDS) at your facility. These materials can include chemicals, fuels, solvents, or any other substances that are classified as hazardous due to their potential risk to health, safety, or the environment. If you store materials that require an SDS, they are considered hazardous.

Hazardous waste refers to materials that are dangerous or potentially harmful once they are no longer usable or have been discarded. Common types include used solvents, leftover paint, spent pesticides, used oil, contaminated rags, batteries, and waste from industrial processes. If your operation produces or disposes of any of these materials, you may be generating hazardous waste.

Materials, equipment, or processes that emit air pollutants include anything that can release substances into the air that could be harmful to the environment or human health. This can include chemical reactions, combustion processes, or the use of certain industrial equipment.

Oil and petroleum products typically include a wide range of substances such as:

• Fuels like diesel, gasoline, and fuel oil
• Lubricating, motor, or hydraulic oils used in garages or maintenance
• Synthetic oils
• Cooking oils, animal fats, and greases
• Seed, nut, and vegetable oils
• Transformer oils
• Used or waste oils

When estimating the amount of oil stored at your location, only count containers that are 55 gallons or larger, including drums, totes, and above or below ground storage tanks.

Environmental training is essential for ensuring that your staff are aware of and understand the environmental regulations and procedures that apply to your operation. The frequency of training can influence compliance with these regulations.

Your operation’s primary activity can affect the types of environmental regulations that apply. Different sectors have unique environmental challenges and requirements.