Environmental
What is 'chlorinated solvents' contamination and why is it common in older Illinois industrial areas?
AA type of air pollution from dry cleaners; regulated only in Chicago
BIndustrial chemicals (TCE, PCE) used as degreasers that persist in groundwater; common in former manufacturing areas and can create vapor intrusion risks✓ Correct
CPool chemicals that can contaminate soil near residential properties
DA water treatment chemical added by Illinois water utilities
Explanation
Chlorinated solvents such as trichloroethylene (TCE) and perchloroethylene (PCE) were widely used as industrial degreasers and dry cleaning chemicals. They are persistent groundwater contaminants that can migrate and create vapor intrusion risks (vapors entering buildings through foundations). Illinois has many TCE/PCE-contaminated sites in former manufacturing areas. These can significantly affect property values and development potential.
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