How do we know that landfill contaminants are not leaking into the Middle School?
In order to “leak” into the building, contaminants would need to be vapors — either gases by nature, or by evaporating from their liquid or solid forms (like alcohol or paint thinner that produce fumes when you use them). The significant contaminants found in the Phase 2 testing were lead, polycyclic aromatic hydrocarbons (PAHs) and methane. The lead and PAHs are solids at normal conditions and do not create vapors that could leak into the school. Their mode of exposure is from physical contact with and/or ingestion of soil containing them. While lead and PAHs in the soils underlying the Middle school do not present a health risk (because there is no significant mode of exposure to humans), they are environmental contaminants because they can dissolve in water and leach from the site. That is the reason for continued evaluation of the site by DEP. They will determine if the risk to the environment would require further remediation in the future. Methane is a gas and has the potential
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