The National Park Service does not do regular sampling for microplastics in water, said Simeon Caskey, physical science branch chief for Grand Teton National Park. The park regularly monitors water for pH, alkalinity, conductivity, temperature and pathogens, and it has looked into including microplastics in its monitoring. Two high schoolers from the San Francisco Bay Area headed to Grand Teton National Park to test lakes and found microplastics in Two Ocean Lake and Lake Solitude.
Microplastics Found in 2 Grand Teton National Park Lakes
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