BURLINGTON, Wash. – The Environmental Protection Agency says rocks near a housing development in Burlington contain naturally occurring asbestos.
Prolonged exposure to asbestos can cause lung cancer.
Investigators recommend that signs be posted, but people who live in Burlington Hills were never notified.
Experts say this highlights the challenges faced when dealing with some natural hazards.
Natural asbestos can be released into the air when the rocks are broken or crushed during mining or development.