140609 proactive iaq and risk management - usace louisville
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Proactive Indoor Air Quality and
Risk Management
U.S. Army Corps of EngineersLouisville District
Presented to
Jeff Prewitt BA Geology, Earlham College MS Geology, University of Vermont Executive Board, American Council for Accredited
Certification (formerly American Indoor Air Quality Council)
Certified Indoor Environmental Consultant, ACAC Certified Indoor Air Quality Professional, Association of
Energy Engineers Certified Environmental Infection Control Consultant,
ACAC Certified Microbial Remediation Supervisor, ACAC Certified Structural Drying Supervisor, ACAC Professional Geologist: Kentucky, Indiana, Illinois, Florida Over 27 years Environmental Consulting
Indoor Air Quality • Indoor Air Quality – Why is it Important?• HVAC Systems and IAQ• Why is Indoor Air Quality an Issue?• Indoor Air Quality is a Function of …• Pitfalls and Threats• Proactive Indoor Air Quality
Indoor Air Quality – Why is it Important?
Worker Satisfaction
Indoor Air Quality – Why is it Important?
Productivity
Decrease absence rate Decrease Sick Building Syndrome
Symptoms
Wargocki et al. – For each 10% decrease in IAQ dissatisfaction productivity will increase by 1.1%
Indoor Air Quality – Why is it Important?
Productivity
Berkley Labs 2012
Indoor Air Quality – Why is it Important?
ProductivityDo the math on employee productivity.• Assume a 100,000 square foot office building with
seven employees per 1000 square feet (per ASHRAE 62-2001), and an average salary of $30,000 per employee.
• Assume occupant dissatisfaction and/or absenteeism due to poor indoor air conditions reduce productivity by 2% yielding $420,000 per year in lost productivity, or Productivity Cost = $420 per square foot.
• Increasing average HVAC energy costs of $0.64 per square foot by even 5% to $0.67 is negligible compared to the productivity increases that may be realized through a clean and comfortable indoor environment.
Indoor Air Quality – Why is it Important?
Indicator of Building Health – Are Systems Working
Properly?
Indoor Air Quality – Why is it Important?
Risk Management
$Lawmakers share health concerns at Navy homes
WBRZ News Mold forces airmen out of dorms
Navy Times Marines fighting mold problem at Parris Island
Viral video spurs Army into action on Fort Polk's moldy bathrooms
Indoor Air Quality – Why is it Important?
High Risk = High cost to avoid liability and
re-build trust Damage = High cost for building
repair Delayed
Reporting = More damage High CO2 = High cost to business –
perception, performance indicator and satisfaction
HVAC Systems and IAQ
A/C Orifice Tube
A/C Evaporator CoreA/C Condenser
A/C Compressor
HVAC Systems and IAQ
From EPA
HVAC Systems and IAQ
Buildings are like a living animal Draw in fresh air, expel CO2 and
contaminants
Kitchen Exhaust
Bathroom Exhaust
Infiltration at windows and doors
+ -
HVAC Systems and IAQ
Buildings are like a living animal Blow in fresh air, exhaust
Outdoor Air/ Supply Air
Return Air
Leakage at doors
+ -
Exhaust
Why is Indoor Air Quality an Issue? Building Construction
Each decade new concerns:70’s – Energy 80’s – Asbestos, New Cheap Building Materials90’s – Radon, Sick Building Syndrome00’s – MoldNext – Teflon?
Why is Indoor Air Quality an Issue?
People – Construct, Use, Operate, Maintain
Indoor Air Quality is a Function of:
Building Envelope
Indoor Air Quality is a Function of: Roof
Indoor Air Quality is a Function of: Walls
Indoor Air Quality is a Function of: Floor/Foundation
Indoor Air Quality is a Function of: Conditioning = Moderate Temp + Moderate
Humidity Comfort = High Temp + Low Humidity Comfort = Low Temp + High Humidity
Indoor Air Quality is a Function of: Conditioning = Remove Particulates
Indoor Air Quality is a Function of: Contaminant Sources
Building Materials
Indoor Air Quality is a Function of: Contaminant Sources
Occupants – bring contaminants in on clothes, belongings
Indoor Air Quality is a Function of: Contaminant Sources
Occupants – Bioaerosols/Bioeffluents – viruses, bacteria, particulates Talking, coughing, sneezing Flushing toilets, sweeping floors, washing
Indoor Air Quality is a Function of: Contaminant Sources
Occupants – Cleaning chemicals and methods
Green Purchasing
Indoor Air Quality is a Function of: Contaminant Sources
Occupants – dry erase markers, air fresheners, finger nail polish, hand sanitizers, solvents, ozone generators
Indoor Air Quality is a Function of:
Ventilation
Indoor Air Quality is a Function of: Maintenance
Pitfalls and Threats Non-detection Perception Inaction Occupant Dissatisfaction Occupant Frustration Group Symptoms, and
Commiseration Occupant Reaction to Frustration
Complaints, calls, internet, media
Laurel Bay schools continue to be scrutinized by environmental teams
Risk Management Be Proactive Be Responsive Be Empathetic Be Sincere Limit internal fix attempts to 2-3 then
get help Communicate – Efforts, Plans, Results,
Solutions Follow up
Proactive Indoor Air Quality
Work environment surveys Develop reaction plan for clients Feedback mechanisms Respond to complaints with visible
efforts Proactive IAQ Surveys Implement Low-cost Solutions Communicate results
If in doubt…
Photograph and email photo to Jeff Prewitt, or
Call Jeff while you are looking at it for suggestions
Phone Consulting is always FREE!
(904) 501-2525 Tropicalsciencesllc@yahoo.com
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