Departments of Ecology, Conservation, Natural Resources, etc.
Here is a broad list via the US EPA of every state's environmental or natural resources departments ("Health and Environmental Agencies of U.S. States and Territories") where those living in each state can find additional resources particular to their states' laws and habitats to be environmentally conscious land owners.
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Washington Department of Ecology
The Washington State Department of Ecology (aka "Ecology") is WA's environmental regulatory agency.
WA DeptEcology Main Page: https://ecology.wa.gov/
I want to...
Ecology Tools:
"Ecology's many web-accessible databases and tools. These tools help you conduct business with us, and give you access to a wealth of scientific data and information."
https://ecology.wa.gov/Footer/Online-tools-publications/Online-tools-databases
Permitting Assistance:
Doing something big on your property? Need a permit?
WADeptEcology permits and certifications ensure that individuals and businesses understand and comply with all applicable federal and state environmental standards to protect land, air, and water for themselves and their neighbors.
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https://ecology.wa.gov/Regulations-Permits/Permits-certifications/Overview-of-permitting
The Oregon Department of Environmental Quality (DEQ) is the chief regulatory agency of the state of Oregon that is responsible for protecting and enhancing OR's natural resources and managing the safety of toxic waste disposal.
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Resources page for ORDEQ: