ISK
ANAGEMENT鈥?
Jeffrey S. Moquin, Director Telephone: 754-321-3200
Risk Management Department Facsimile: 754-321-3290
August 2, 2005
TO: Ms. Mary Lou Ridge, Principal
Bethune Elementary School
FROM: Robert J. Krickovich, Coordinator, LEA
Facilities and Construction Management, Environmental Division
SUBJECT: Indoor Air Quality (IAQ) Assessment
FISH 801K, 806, 807, 809, 810 and 815
On July 21, 2005 the IAQ Assessment Team conducted an assessment of FISH 801K, 806, 807, 809, 810
and 815 at Bethune Elementary School. The evaluation consisted of a walkthrough of the identified
areas to assess the current condition of the location with regard to indoor air quality. This assessment
included observations of the carpet, floor tile, ceiling tile, interior walls, false ceiling plenum, and
accessible ventilation equipment.
Attached are the findings of this assessment along with recommendations for further assessment,
remediation, or corrective actions, if needed.
Generally, the IAQ Assessment did not identify any existing conditions significantly impacting IAQ
and thereby presenting immediate health and safety concerns to building occupants. However, due to
individual sensitivities and predisposing health factors, it is possible that some building occupants
may elicit a health response to agents and / or conditions identified during the evaluation. Therefore,
to further improve IAQ, prevent development of future IAQ-related problems, and to reduce the
potential for IAQ-related complaints by building occupants, the IAQ Assessment Team recommends
appropriate follow up of each item identified and listed in the attached evaluation.
Should any questions arise, or if the current concerns continue after the attached recommendations
have been addressed, please feel free to contact me at 754-321-1638.
cc: Sam Gregg, Area Superintendent
Margaret Underhill, Area Director
Jeffrey S. Moquin, Director, Risk Management
Bertram Lewars, Project Manager II, Facilities and Construction Management
Jerrod Neal, Broward Teachers Union
Mark Dorsett, Manager 1, Physical Plant Operations Division, Zone 1
Roy Norton, Manager Custodial/Grounds, Physical Plant Operations Division
RK/tc
Enc.
The School Board of Broward County, Florida
IAQ AHU Assessment
Bethune Elementary July 21, 2005
Evaluation Requested
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature Relative Humidity CO2
AHU Room # Range Range
Range
801K 72 - 78 < 1,000 PPM
30% - 60%
Visible water Visible microbial Amount of material
No
Noticeable Odor
damage / staining? growth? affected
Metal Deck No No None
Ceiling Type
Drywall No No None
Wall Type
Flooring Concrete Yes No Standing water on floor
Minor Dust Corrective Action
Needs
Clean
/ Debris Required
Cleaning
No Yes Yes Clean Room
Room
Yes No No
Filters
No Yes Yes Clean Coils
Coil
Yes No No
Pan
No Yes Yes Clean inside of unit
Duct
Unknown Cannot determine location
Motorized Damper Installed
Unknown Cannot determine location
Damper Open / Operating
Unknown Cannot determine location
Fresh Air Intake Un-obstructed
Unknown Cannot determine location
Pollutant Sources Near Air Intake
52
AHU Return Water Temp
47
AHU Supply Water Temp
Observations
Findings:
- AHU in room has the wrong size filters or is missing filler panels allowing air to bypass filters (unfiltered air causes dirty supply
grills, dirty ceiling tiles at supply grills and IAQ complaints)
- Heavy dust and debris on filters (one was so dirty that it was sucked out of hte frame and into the air handler coil)
- Standing water on floor from leaking valves
- Dust and debris in room and on floor (Pictures, television and carpet remnants stored in room)
- Dust and debris on HVAC coils
Recommendations:
Site Based Maintenance:
- Install new filters - proper size
- Thoroughly clean room
Physical Plant Operations Division:
- Clean HVAC coils and duct at units due to filter bypass
- Evaluate and repair leaking chilled water valves and evaluate and repair to lower humidity levels throughout the building
IAQ Assessment
July 21, 2005
Evaluation Requested
Bethune Elementary School
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature
Fish Relative Humidity CO2
Range # Occupants
Range
Range
806 73.8 66.8 397 3
72 - 78 Max 700 > Ambient
30% - 60%
Visible water Visible microbial Amount of material
No
Noticeable Odor
damage / staining? growth? affected
2x4 Lay In One Tile
Ceiling Type No
Yes
Drywall
Wall Type 120 square feet - 2 Locations
Yes
Yes
Carpet
Flooring Carpet is New
No No
Needs
Clean Minor Dust
Corrective Action Required
Cleaning
/ Debris
No Yes Yes Cobwebs in corners
Ceiling
No Yes Yes Clean and paint
Walls
Flooring Yes No No Carpet is new
HVAC Supply Grills No Yes Yes Clean with Wexcide disinfectant
HVAC Return Grills No Yes Yes Clean with Wexcide disinfectant
Ceiling at Supply No Yes Yes Clean as appropriate
Grills
Surfaces in Room No Yes Yes Clean as appropriate
Observations
Findings:
- Visible microbial growth on Southwest wall (previously reported) and on South wall (new)
- Visible microbial growth on instrument cases
- One stained ceiling tile
- Water damaged drywall on left side of water cooler and in corridors at doors
- All exterior walls have water intrusion (elevated moisture levels)
- Heavy dust and debris on environmental surfaces and clutter throughout the room (boxes, papers, etc.)
- Heavy dust and debris on HVAC supply and return grills
- Dust and debris on ceiling at HVAC supply grills
- Elevated humidity level
Recommendations:
Site Based Maintenance:
- Dispose of all instrument cases with visible microbial growth
- Replace stained ceiling tile
- Clean all environmental surfaces and encourage occupant to remove clutter
- Clean HVAC supply and return grills with Wexcide disinfectant solution
- Clean ceiling at HVAC supply grills
- Continue to monitor this location for any signs of microbial growth as well as dust and debris accumulation and clean as
appropriate
Physical Plant Operations Division:
- Remove and replace all drywall where water damaged - Southwest wall and South wall, left side of water cooler and corridors at
doors
- Evaluate and repair HVAC system to lower humidity level
Project Manager:
- Evaluate cause of water intrusion and initiate repair ASAP
IAQ Assessment
July 21, 2005
Evaluation Requested
Bethune Elementary School
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature
Fish Relative Humidity CO2
Range # Occupants
Range
Range
807 75.1 69.3 415 3
72 - 78 Max 700 > Ambient
30% - 60%
Visible water Visible microbial Amount of material
No
Noticeable Odor
damage / staining? growth? affected
2x4 Lay In None
Ceiling Type No
No
Drywall
Wall Type Around secondary exit door
No
Yes
Carpet
Flooring Carpet is New
No No
Needs
Clean Minor Dust
Corrective Action Required
Cleaning
/ Debris
No Yes Yes Cobwebs in corners
Ceiling
No Yes Yes Clean and paint
Walls
Flooring Yes No No Carpet is new
HVAC Supply Grills No Yes Yes Clean with Wexcide disinfectant
HVAC Return Grills No Yes Yes Clean with Wexcide disinfectant
Ceiling at Supply No Yes Yes Clean as appropriate
Grills
Surfaces in Room No Yes Yes Clean as appropriate
Observations
Findings:
- Water damaged drywall around secondary exit door and in corridors at doors
- All exterior walls have water intrusion (elevated moisture levels)
- Heavy dust and debris on environmental surfaces and clutter throughout the room (boxes, papers, etc.)
- Heavy dust and debris on HVAC supply and return grills
- Dust and debris on ceiling at HVAC supply grills
- Elevated humidity level
Recommendations:
Site Based Maintenance:
- Clean all environmental surfaces and encourage occupant to remove clutter
- Clean HVAC supply and return grills with Wexcide disinfectant solution
- Clean ceiling at HVAC supply grills
- Continue to monitor this location for any signs of microbial growth as well as dust and debris accumulation and clean as
appropriate
Physical Plant Operations Division:
- Remove and replace drywall where water damaged - around secondary exit doors and in corridors at doors
- Evaluate and repair HVAC system to lower humidity level
Project Manager:
- Evaluate cause of water intrusion and initiate repair ASAP
IAQ Assessment
July 21, 2005
Evaluation Requested
Bethune Elementary School
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature
Fish Relative Humidity CO2
Range # Occupants
Range
Range
809 72.9 69 397 3
72 - 78 Max 700 > Ambient
30% - 60%
Visible water Visible microbial Amount of material
No
Noticeable Odor
damage / staining? growth? affected
2x4 Lay In One ceiling tile
Ceiling Type No
Yes
Drywall
Wall Type Around secondary exit door
No
Yes
Carpet
Flooring Carpet is New
No No
Needs
Clean Minor Dust
Corrective Action Required
Cleaning
/ Debris
No Yes Yes Cobwebs in corners
Ceiling
No Yes Yes Clean and paint
Walls
Flooring Yes No No Carpet is new
HVAC Supply Grills No Yes Yes Clean with Wexcide disinfectant
HVAC Return Grills No Yes Yes Clean with Wexcide disinfectant
Ceiling at Supply No Yes Yes Clean as appropriate
Grills
Surfaces in Room No Yes Yes Clean as appropriate
Observations
Findings:
- Water damaged drywall around secondary exit door and in corridors at doors
- All exterior walls have water intrusion (elevated moisture levels)
- One stained ceiling tile
- Heavy dust and debris on environmental surfaces and clutter throughout the room (boxes, papers, etc.)
- Heavy dust and debris on HVAC supply and return grills
- Dust and debris on ceiling at HVAC supply grills
- Elevated humidity level
Recommendations:
Site Based Maintenance:
- Replace stained ceiling tile
- Clean all environmental surfaces and encourage occupant to remove clutter
- Clean HVAC supply and return grills with Wexcide disinfectant solution
- Clean ceiling at HVAC supply grills
- Continue to monitor this location for any signs of microbial growth as well as dust and debris accumulation and clean as
appropriate
Physical Plant Operations Division:
- Remove and replace drywall where water damaged - around secondary exit doors and in corridors at doors
- Evaluate and repair HVAC system to lower humidity level
Project Manager:
- Evaluate cause of water intrusion and initiate repair ASAP
IAQ Assessment
July 21, 2005
Evaluation Requested
Bethune Elementary School
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature
Fish Relative Humidity CO2
Range # Occupants
Range
Range
810 70.9 74.6 396 3
72 - 78 Max 700 > Ambient
30% - 60%
Visible water Visible microbial Amount of material
Yes
Noticeable Odor
damage / staining? growth? affected
2x4 Lay In None
Ceiling Type No
No
Drywall
Wall Type Around secondary exit door
No
Yes
Carpet
Flooring Carpet is New
No No
Needs
Clean Minor Dust
Corrective Action Required
Cleaning
/ Debris
No Yes Yes Cobwebs in corners
Ceiling
No Yes Yes Clean and paint
Walls
Flooring Yes No No Carpet is new
HVAC Supply Grills No Yes Yes Clean with Wexcide disinfectant
HVAC Return Grills No Yes Yes Clean with Wexcide disinfectant
Ceiling at Supply No Yes Yes Clean as appropriate
Grills
Surfaces in Room No Yes Yes Clean as appropriate
Observations
Findings:
- Visible microbial growth on vinyl bag and instrument cases in room
- Visible microbial growth on wood furniture in room
- Water damaged drywall around secondary exit door - frame rusted through
- All exterior walls have water intrusion (elevated moisture levels)
- Heavy dust and debris on environmental surfaces and clutter throughout the room (boxes, papers, etc.)
- Heavy dust and debris on HVAC supply and return grills
- Dust and debris on ceiling at HVAC supply grills
- Elevated humidity level
Recommendations:
Site Based Maintenance:
- Dispose of vinyl bag and all instrument cases with visible microbial growth
- Clean wood furniture with Wexcide disinfectant solution to remove microbial growth
- Clean all environmental surfaces and encourage occupant to remove clutter
- Clean HVAC supply and return grills with Wexcide disinfectant solution
- Clean ceiling at HVAC supply grills
- Continue to monitor this location for any signs of microbial growth as well as dust and debris accumulation and clean as
appropriate
Physical Plant Operations Division:
- Remove and replace all drywall where water damaged - around secondary exit door - and replace exterior door frame
- Evaluate and repair HVAC system to lower humidity level
Project Manager:
- Evaluate cause of water intrusion and initiate repair ASAP
IAQ AHU Assessment
Bethune Elementary July 21, 2005
Evaluation Requested
July 21, 2005
Evaluation Date
11:50 am
Time of Day
Outdoor Conditions Temperature 93.1 58.8
Relative Humidity Ambient CO2 404
Temperature Relative Humidity CO2
AHU Room # Range Range
Range
815 72 - 78 < 1,000 PPM
30% - 60%
Visible water Visible microbial Amount of material
No
Noticeable Odor
damage / staining? growth? affected
Metal Deck No No None
Ceiling Type
Drywall No No None
Wall Type
Flooring Concrete Yes No Standing water on floor
Minor Dust Corrective Action
Needs
Clean
/ Debris Required
Cleaning
No Yes Yes Clean Room
Room
No Yes Yes Change Filters
Filters
No Yes Yes Clean Coils
Coil
Yes No No
Pan
No Yes Yes Clean inside of unit
Duct
Yes
Motorized Damper Installed
Yes
Damper Open / Operating
Yes
Fresh Air Intake Un-obstructed
Yes Return air grills are located on east side of building by bus loop
Pollutant Sources Near Air Intake
52
AHU Return Water Temp
47
AHU Supply Water Temp
Observations
Findings:
- 3 AHU's in room all have the wrong size filters or are missing filler panels allowing air to bypass filters (unfiltered air causes
dirty supply grills, dirty ceiling tiles at supply grills and IAQ complaints)
- Heavy dust and debris on filters (one was so dirty that it was sucked out of hte frame and into the air handler coil)
- Standing water on floor from leaking valves
- Dust and debris in room (newspapers, soda cans, food wrappers, etc.)
- Dust and debris on HVAC coils
Recommendations:
Site Based Maintenance:
- Install new filters - proper size
- Thoroughly clean room
Physical Plant Operations Division:
- Clean HVAC coils and duct at units due to filter bypass
- Evaluate and repair leaking chilled water valves and evaluate and repair to lower humidity levels throughout the building
Project Manager:
- Evaluate location of fresh air intakes and relocate away from bus loop
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