| Type of expert | environmental engineer |
| Website | https://www.ucsusa.org/bio/gretchen.html |
| Expertise | scientific integrity, political interference in science-based standards, hydraulic fracturing, climate change, sugar, chemicals |
| Email address |
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| Primary phone number |
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| @gretchentg | |
| Time zone | -5 GMT |
| City | Washington |
| State | DC |
| Country | United States |