Best Management Practices Toolbox
Proper Materials Storage |
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Proper storage of materials can range from sealing chemicals in a well-labeled container indoors to covering piles of materials outdoors. Hazardous materials require special attention, but non-hazardous materials also need to be stored so that they do not contribute to dirt, trash, and debris in stormwater. Designate a storage area where runoff will not lead to the street or storm drains. Minimize mishandling by training staff and posting applicable pollution prevention information in storage areas.
BMP Objective
The purpose of this best management practice is to minimize leaks, spills, and runoff that may might pollute stormwater.
Implementation
DO:
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The first step in properly storing materials is to compile a materials inventory by reviewing purchase orders and touring the physical plant or work area of your business.
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Identify chemicals that are hazardous or toxic. Maintain Material Safety Data Sheets (MSDS) and other safety material for stored inventory in an area accessible to employees. Include information on safety equipment and appropriate materials and procedures to clean spills. In some cases, posters in storage areas may be the best way to remind employees of this information when it is needed. Provide all materials in the first language of employees.
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Keep applicable clean up kits where materials are stored.
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Label stored materials for contents, unit number, expiration date, handling instructions, and health or environmental hazards.
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Store materials where runoff will not lead to the street, gutter, or storm drain. Storage areas should be graded so that runoff will not lead to storm drains or stored materials can be lifted away from the runoff, for example, by storing on pallets and then covering with a tarp.
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Close off drains in storage areas.
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If possible, store materials indoors. This prevents wind and rain from carrying them away.
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Outdoors, cover any materials that are toxic or could contribute to trash, debris, and sediment in stormwater. For example, use leak proof lids on containers or plastic tarps over dirt piles. If they are exposed to runoff, they should also be isolated by either using berms, or elevated, for example, by using pallets.
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Keep in mind the lifespan of the cover used. Tarps and plastic sheets, for example, may not hold up well in certain climates.
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For dirt piles, block rainwater runoff with a Berm.
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Keep dumpster lids closed and consider constructing a roof or overhang to shelter the dumpster. Replace leaking dumpsters.
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Take care when loading and unloading materials to minimize losses or fugitive emission losses such as dust or mist.
DON’T:
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Do not dispose of unwanted materials in the street or storm drain.
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Do not assume that a material is safe for stormwater because it says it is non-toxic or biodegradable. Non-toxic means the product is not toxic to the user. Biodegradable means the product will eventually break down, but it may harm the environment in the meantime.
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