3,065 bytes added
, 6 years ago
When assessing LID options on
your site, identifying pollution threats is an important part of
the pre-design process. Applying the principles of pollution
prevention, -- the use of processes, practices, materials,
products, substances or energy that avoid or minimize the
creation of pollutants and waste, and reduce the overall risk to
the environment and human health -- can help eliminate those
pollution threats, ensure compliance
with regulations and bylaws, and create a safer environment
for staff and customers.
P2 is about anticipating and preventing pollution instead of
reacting to it after a spill or release has occurred. It is part of
an ongoing pollution management approach that is comprised
of prevention, control and clean-up.
P2 opportunities can be found throughout any site or operation.
For instance, installing different equipment or technology, or
changing raw materials or staff routines can result in pollution
prevention.
The ways in which P2 is achieved varies from one sector to
another, but typically there are nine common opportunities:
==Dumpster management==
Dumpsters can be a major
source of pollution that can affect water quality. When
dumpster lids are left open rainwater is able to mix with
the trash, resulting in a leaking fluid, or “dumpster juice”
that can contain toxic organic and inorganic materials. If
not treated, this dumpster juice can enter the storm drain
system, contributing to poor water quality.
==Grease management==
Restaurants produce grease
and other wastes as a by-product of normal food
preparation. If grease is dumped or washed into sewers
or storm drains, it can cause sanitary sewer overflows or
stormwater runoff pollution. Restaurants can implement
simple and low-cost P2 practices and train workers to
properly dispose of used waste.
==Parking lot maintenance==
Maintenance operations
have the potential to pollute stormwater runoff if sensible
P2 practices are not employed. This is particularly true
of power washing, which can deliver sediment, nutrients,
hydrocarbons, and other pollutants to the storm drain
system.
==Building maintenance==
Some building maintenance
practices produce polluted wash water that can directly
enter the storm drain system during dry weather,
whereas others deposit fine particles or liquids that can
wash away into stormsewers during wet weather.
==Landscaping and grounds care == Landscaping
services are generally performed by a lawn care/
landscaping contractor or an in-house maintenance
crew. Poor landscaping practices can create stormwater
pollution, particularly in urban areas where soils are
compacted.
==Outdoor storage==
The risk of stormwater pollution
is greatest for operations that store large quantities of
liquids or bulk materials at sites that are connected to
the storm drain system. Protecting outdoor storage areas
is a simple and effective P2 practice.
==Vehicle maintenance and repair == Often, vehicles
that are wrecked or awaiting repair can be a concern if
leaking fluids are exposed to stormwater runoff. Vehicle