I am pleased to let you know that the latest reports on the air quality measurements taken at Glenwood Middle School on October 7, 14, and 21 continue to be favorable. Aria Environmental, Inc. recently completed reports on the sampling for mold spore counts and other air quality indicators taken in multiple indoor and two outdoor locations on each date. The results for all three assessments show that total mold spore counts for the indoor measurements continue to be significantly lower than the spore counts found outdoors.
Specifically, the indoor spore counts measured in the main building classrooms on October 7 ranged from 213 to 11,373 total spores per cubic meter of air, while counts in the portable classrooms ranged from 5,707 to 14,120 total spores per cubic meter. Outdoor counts were approximately 7 times higher on average than indoor counts, with measurements taken in the two outdoor locations ranging from 49,146 to 51,759 total spores per cubic meter.
The indoor counts taken on October 14 ranged from 140 to 967 total spores per cubic meter. In the portable classrooms, counts ranged from 1,473 to 2,700 per cubic meter. Outdoor counts were approximately 11 times higher on average than indoor counts, with measurements taken in the two outdoor locations ranging from 8,807 to 10,153 total spores per cubic meter.
On October 21, the indoor counts ranged from 307 to 493 total spores per cubic meter in the main building classrooms, and from 973 to 2,367 per cubic meter in the portable classrooms. Outdoor counts were approximately 24 times higher on average than indoor counts, with measurements taken in the two outdoor locations ranging from 11,447 to 20,560 total spores per cubic meter.
The results of the other air quality assessments also remain favorable overall. Temperature and relative humidity levels on both test dates fell mostly within the comfort ranges established by ASHRAE, with a few exceptions slightly above the comfort ranges. All other measurements remain within the acceptable ranges for good air quality in all areas. HCPSS staff are continuing to monitor air quality readings and making adjustments to further improve air circulation.
Aria also conducted testing on a glue stick, two books, a small plastic storage bin, and several cloth-backed chairs, on which mold growth was suspected due to discoloration. The test results do not indicate any measureable presence of mold growth. All of the items have been discarded or thoroughly cleaned according to Aria’s recommendations.
Sincerely,
Robert Motley, Principal