| Expert: Cortland School Safe, Keep Monitoring H2S |
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An expert hired to analyze the results of new air quality testing done at Cortland Elementary School says the school is safe for students and staff, but is also recommending that the level of hydrogen sulfide in the air there be continuously monitored. Doctor Theodore Hogan has taught and done work assessing airborne health risks for three decades and was hired by the DeKalb School District to review a second, more elaborate set of tests for the potential harmful gas hydrogen sulfide done at the school by an independent company. "The test that they did, not only in the school, but outside the school and around the area, were very low," says Hogan. "They were well below the minimal risk level of .02 parts-per-billion." That minimum level for risk is set by a federal agency. Hogan’s assessment has been reviewed by the Illinois Department of Public Health, and the agency has agreed with its findings. Even though hydrogen sulfide was at low levels in the testing, Hogan is recommending the district take some action. "I recognize there’s a lot of concern among the community about the safety of their kids, with good reason," says Hogan, "and so I felt, in this situation, that the best way to assure that their kids were protected was to install a monitor in this school to monitor on a continuous basis." The monitoring equipment will send an alarm to school personnel if the hydrogen sulfide level in the building reaches minimum risk level. The steps to lower the level that will be taken if the alarm goes off will now be developed. The School Board Thursday night did not raise any objections to buying the $20,000 to $25,000 monitoring equipment. The hydrogen sulfide testing was prompted by the possible expansion of the landfill south of I-88. Landfill produce the gas. Hogan says while the testing showed the hydrogen sulfide in Cortland School is coming from outside the building, it could not pinpoint the landfill as the source.
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