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SECONDARY
CONTAINMENT - Chemicals and/or hazardous substances
in drums or tanks should be kept covered and stored in secondary
containment. Substances may include, but are not limited to fuels,
lubricants, flammable liquids, and corrosives. Spills of materials
or chemicals should be contained and cleaned up immediately. Secondary
containment systems must be able to hold the volume of the largest
container in the storage area.
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OUTDOOR
COVERED STORAGE - Outdoor storage areas are covered
to
prevent stormwater contact. Proper design of outdoor storage areas
for materials reduces opportunity for toxic compounds, oil and
grease, heavy metals, nutrients, suspended solids, and other pollutants
to enter the stormwater conveyance system. Construct a berm around
the perimeter of the material storage area to prevent the runon
of uncontaminated stormwater from adjacent areas as well as runoff
of stormwater from the material.
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COVERING
DRY GOODS - Dry goods stored outside should be protected
from rainfall to
prevent stormwater contact.
Dry goods should be covered with a temporary waterproof covering
made of polyethylene, polypropylene, or hypalon. Keep covers in
place at all times when work is not occurring. Slope paved areas
to minimize the pooling of water on the site, particularly with
materials that may leach pollutants into stormwater. |
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GOOD
HOUSEKEEPING PRACTICES - Make every effort to prevent
spills. When they do occur, clean them up immediately with absorbent
materials. Never wash spills into a storm drain. Repair leaky equipment
and clean spills with absorbent materials. |
| Examples
of Poor BMP Implementation: |
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POOR
HOUSEKEEPING
PRACTICES - This picture demonstrates the
improper handling of chemicals and illegal dumping of petroleum
products. Good housekeeping is the key to good environmental management.
Keeping a clean work place with wastes being disposed of properly
makes good sense for all. |
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PRESSURE
WASHING OUTDOOR SURFACES - This picture demonstrates
how pressure washing of parking areas allows soap and oily wastewater
to enter the storm drain system. Pressure washing outdoor surfaces
should never be discharged to a storm drain. The preferred method
is dry sweep the surface. However, if pressure washing is used storm
drains should be covered, or the path to the drain should be blocked
during pressure washing. Collected wastewater can be pumped into
a sanitary sewer clean out, or, in some instances discharged to
a landscaped area. |
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ILLEGAL
DISCHARGE OF WASTEWATER - This picture demonstrates how
toxic wastewater is disposed of in an inappropriate manner. Discharge
of wastewater and chemicals are not allowed to enter storm drains.
Common mistakes in disposing of wastewater include hosing down industrial
storage areas, sidewalks and driveways; discharging wastewater to
stormwater; washing of vehicles in the street. |
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POOR
REPAIR PRACTICES - This picture demonstrates poor repair
practices can lead to leaky equipment. Make every effort to prevent
spills. When they do occur, clean them up immediately with absorbent
materials. Never wash spills into a storm drain. Repair leaky
equipment and clean spills with absorbent materials.
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