Environmental
A NH buyer's home inspection reveals white powder residue around basement windows (efflorescence). This typically indicates:
AAsbestos contamination
BWater infiltration and mineral deposits, suggesting moisture intrusion in the foundation✓ Correct
CRadon gas deposits
DMold from a roof leak
Explanation
Efflorescence is a white powdery deposit of mineral salts left behind when water moves through concrete or masonry and evaporates. It indicates moisture intrusion and should be investigated further to assess the extent of water infiltration.
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