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volatile organic compounds
(VOCs) OSB SERVICES/OSB LAB |
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Services |
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-Indoor
Air Quality
-Emission Sources |
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Managing
Indoor Air Quality and People Complaints |
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-Environmental
Management |
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What
causes people today to worry about their environment
and personal air quality exposure?
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People
are better informed today. News media constantly address and expose environmental
health concerns, technical literature in layman's terms is readily available,
and the Internet has empowered every person to search for expert opinion.
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People are more sensitive today. Our cleaner environment and
absence of traditional disease has made people less resistant to infection.
We have moved toward a more hygienic lifestyle for very good reasons -
because it prevents the transmission of dangerous life-threatening
organisms.
But the cost of that may have been that we have deprived our immune response
of an essential stimuli during the first five years of life (National Post 1999).
How do people vaccinate themselves again? Development of allergic disease is
illustrated schematically. A genetically susceptible individual is exposed
to an allergen and becomes immunologically sensitized. At this stage the
person is asymptomatic, but the sensitization may be detected by skin tests
or laboratory tests. Over time, a proportion of sensitized individuals will
develop one of a group of allergic diseases. Exposure to an allergen is understood
to be a major factor at each stage of the pathogenesis of these diseases.
The most common allergic diseases caused by indoor allergens are allergic
rhinitis, sinusitis, asthma, and allergic skin diseases (dermatitis)
(National Academy of Sciences).
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-Indoor
Sampling
Programs
-Managing Indoor Air |
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Quality
Lab |
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-Technical Documents
-VOC
Analytical
Method
-Chain of Custody |
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Contact OSB |
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Home |
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OSB
Services/OSB Lab
2759 Thamesgate
Dr.
Mississauga, Ontario
Canada L4T 1G5
Phone: 905 677 0022
Fax: 905 677 0029 |
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osblab@osbservices.com
osb@osbservices.com
Created by Aga
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•
People
are less tolerant today. Expectations are high today supported by long life
expectancy and advances in medicine. There are many individual and collective
influences on building occupants affecting their well being, comfort and
tolerance at work. Perception of the work environment is influenced by environmental
stressors such as lighting, noise, vibration, overcrowding, ergonomics,
interior design and psycho-social issues such as company organization, culture,
job satisfaction, security, health and family related problems (PM Magazine
1995). |
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Managing
Indoor Air Quality and Tenant Complaints
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The interaction of many environmental
components can lead to indoor air quality complaints. Many of these
environmental factors actually have little if anything to do with the
quality of air around us. If people feel ill, uncomfortable, or "out of
temperature", they blame air quality which also incorporates all aspects
of the air delivery system. Our specialty is the measurement of both the
chemical and people parameters that define indoor air quality (IAQ).
The 1995 Health Canada booklet (Indoor Air Quality in Office Buildings:
A Technical Guide) is well written for this purpose. CSA has published
their guideline Z 204-94 for managing indoor air quality in office
buildings. A very good manual is published by NIOSH and USEPA: A
Guide for Building Owners and Facility Managers. A useful text:
Indoor Allergens is published by National Academy Press (National
Academy of Sciences).
The causes of occupant complaints in a well managed building in the GTA
are multi-factorial and often elusive. Thermal comfort may be the only
issue in your building which includes local overheating, underheating,
humidity extremes, drafts and mainly lack of air circulation / exchange.
Generally, the building air delivery system provides the same air
quality parameters to all tenants. Therefore any tenant complaints will
be a subjective matter, the result of their activities in the office
space.
Some factors influencing indoor air quality which need to be considered
during any investigation include:
• building design and location
• the outside air quality
• supply temperature and
relative humidity
• off-gassing from office
furnishings and equipment
• pollution sources, migration
and entrainment
• occupancy levels
• work activity |
Our experience in the GTA has been that the outside air quality entering
large commercial buildings has not been an issue. We are fortunate to be
in a city that has usually clean air.
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