Street sweeping and cleaning
may not look like a technical job, but it is properly carried out in an
organized and planned way in the US and Great Britain.
When urban civilizations were
first evolving, street cleaning was done manually with the help of conventional
brooms, shovels, and washcloths. Gradually, the industrial revolution sank in
and technology started to replace manual labor (and
horses and buggies) in the streets. Vacuum cleaners for drain cleaning,
automatic sweeping machines to keep the roads in order, and snow movers were
invented and brought into the general use.
Street sweeping machines are
employed by the government for this job, and certain guidelines have been put
into place. States and municipalities have procured commercial street sweeping
vehicles through third parties. Different regions in the US have their own
street sweeping standards and guidelines based on population density, vehicle
density, and the demographics of the region. However, all of them have many
similar guidelines and rules to be followed for street sweepers.
Formulating a street cleaning
schedule is the first and most important part of defining street cleaning
practices. Preparing a schedule is directly related to efficiency of the
program, but also important are sticking to the schedule and implementing it
thoroughly to make the streets look better and cleaner on a long term basis.
Constructing dumping sites is
the second step, the dumping sites must be accessible from all the streets yet
they should be far away from the residential areas so that no bacterial or
viral disease threatens public health. Disposal systems should be modern and availed
of advanced technology (because conventional methods always invite trouble).
Hazardous material must be tested before dumping to avoid any public health
issues or possible contamination.
Parking and traffic rules must
be defined and publicized on cleaning day, to avoid trouble and inconvenience
for both the public and the sweepers.
Federal and State Air Quality
norms are followed by the states to clean their streets and provide a healthy
living and working atmosphere for the masses. Following is a list mentioning
general street cleaning guidelines and standards adopted across all the
American States and territories.
Every street is cleaned on a
particular day, and the municipal authorities chalk out the cleaning schedule
in the beginning of the year. At the entrance of all streets and neighborhoods, street cleaning day notices are posted and
a few hours window is given for those who rely on street
parking. During this time, the residents are supposed to take their vehicles
out of the streets, for say two or three hours depending upon the street
and neighborhood, so that cleaning operations
can be performed.
Mechanical brooms and vacuum
cleaning devices must be used simultaneously so that street sweeping does not
cause formation of dust clouds.
All the street sweepers must
be certified PM10 street sweepers, complying with the Rule 1186 of SCAQMD. The
term PM10 refers to the particles of diameter less than
10 micrometers up to 2 micrometers.
Contracted or hired sweeping
companies must comply to the standards and
mandates set by the National Pollution Discharge Elimination System (NPDES).
Regenerative air clean systems
are recommended, as they are fast and can clean minute dust particles from
roads and drains. This system relies on a high velocity controlled jet of air
created by the powerful blower wheel which picks up dirt and debris from the
road and dumps it in an attached hopper.
It is mandatory to use
disinfectants in the rainy season (and it's a best practice in other seasons,
too) so that the streets stay free from any possibility of fungal, viral, or
bacterial attack.
Street cleaning guidelines do
not mean setting rules for the sweepers and authorities only. It also includes
educating the masses about the need of keeping their neighborhood clean,
including:
Pruning shrubs and trees so
that they do not block equipment from cleaning the streets. Never place your
garbage containers or recycling containers near the fire hydrants.
Educating the public about
recyclable waste products and how to put them to good use.
Minimizing the use of plastic
bottles and polythene bags (because they can harm our environment beyond our
imagination).
Cooperating with the sweepers
and cleaners.
Of late, street sweeping and
cleaning technology has improved by leaps and bounds. Vacuum cleaning,
regenerative air cleaning, and the 21st Century invention, Captive
Hydrology, has made street sweeping an easy task. These are mainly used to
clean the street or pavement surface in wet conditions. This technology was
first used in the Great Britain, and in America the city of Olympia, Washington
was the first to use Captive Hydrology technique to clean its pavements and
streets.