Environmental
What is 'chlordane' and why is it a concern in older Delaware residential properties?
AA water treatment chemical used in older wells
BA pesticide formerly used to treat soil for termites; banned in 1988 and can persist in soil and structures, creating contamination concerns in pre-1988 homes✓ Correct
CA refrigerant chemical used in older HVAC systems
DA chemical used in older insulation materials
Explanation
Chlordane was a pesticide widely used for termite treatment in residential properties until the EPA banned it in 1988. It is persistent, can remain in soil and building materials, and is a known carcinogen — requiring disclosure as a potential environmental concern.
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