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indoor concentrations of airborne bacteria and viruses which can cause
infectious diseases, e.g. influenza, colds,
tuberculosis.
Many school buildings are subject to
mold infestation on ceiling tiles, carpeting and older books.
A significant portion of the population is allergic to molds. These
infested materials can result
in mold exposures that cause allergenic symptoms. Some molds
are highly toxigenic and may contain
endotoxins, which can cause serious health problems.
The source of mold problems may be related to moisture buildup from
leaks in the building envelope
or from infiltration of humid air due to negative building
pressurization.
It may also affect the learning performance
of students in several ways. Absenteeism due
to illness clearly results in lost opportunities to learn. Such
illness is likely to reduce their
learning abilities even when they are in school. SBS symptoms may
also results in learning deficits
in students.
For these and the other reasons noted
above, air quality in schools is of particular concern.
Proper maintenance of acceptable indoor air is more than a "quality"
issue, it encompasses safety
and stewardship of our investment in the students, staff, and
facilities.
To address these issues, school boards
and administrators should look to budgeting more
on plant maintenance, new building designs and especially for building
control components.
Federal Studies
In recent years, comparative risk studies
performed by EPA and its Science Advisory Board
has consistently ranked indoor air pollution among the top five
environmental risks to public
health. Good indoor air quality is an important component of a healthy
indoor environment, and can help
schools reach their primary goal.
Good indoor air quality contributes
to a favorable learning environment for students,
productivity for teachers and staff, and a sense of comfort, health,
and well being. These elements combine
to assist a school in its core mission
- educating children. -- EPA
A 1995 GAO survey of schools suggests
that ventilation and indoor air quality are significant
problems. Thirty-six percent of the schools reported HVAC systems
as a "less than adequate
building feature", while 19% reported existing Indoor Air Quality
problems. In way of comparison, 41%
of California schools reported HVAC systems "less
than adequate" and 22% having existing IAQ problems.
When you think about it, these percentages
translate into huge numbers, even if you include
a 100% safety factor by reducing the totals by 50%. This conservatively
translates to 4,260,000 students, plus
312,000 teachers and administrators spending 6 to
8 hours per day in buildings with IAQ and ventilation problems (based
on 1996 enrollment statistics).
And, of these national totals, 3,072,000 are 7- 15 years of age
and at the most risk. In a few words
not
a good situation.
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