We propose updates to the human health criteria in Table 240 of WAC 173-201A-240, Toxic substances, to: Replace 143 state-adopted human health criteria for 73 pollutants that the Environmental ...

Our economic analyses support proposed rules and permits, as well as a number of other projects and publications. We use real-world data, often collected directly from stakeholders, to comprehensively ...

We continue to sample and identify properties (yards) that qualify for state-funded soil replacement though the Yard Program. Since 2013, we have found 1,201 yards eligible for soil replacement within ...

In partnership with local clean air agencies, we regulate businesses that emit air pollution. We issue air permits for industrial emissions and for many types of burning. We also require businesses to ...

Fire danger is high in many areas because of hot, dry weather. Most of the state is still in a drought. Burn bans are in place across Washington. Check with your local fire district before lighting ...

Our Nuclear Waste Program also oversees several other facilities in Washington that aren't part of the Hanford cleanup. Click on the tabs to find out more about the facilities, and read about the US ...

Wildfire smoke is a major threat to human health. Smoke from wildfires is the largest source of particle pollution in Washington. Breathing in smoke causes wheezing and coughing, heart and lung ...

Governmental agencies use the SEPA environmental checklist to help determine whether a proposal will have significant adverse environmental impacts. The information helps identify what measures can be ...

Sample of vitrified material at the U.S. Department of Energy's Office of River Protection. For the past few decades, the most dangerous radioactive and chemical waste has been and continues to be ...

When establishing cleanup levels for your contaminated site, use these guidance documents in combination with the CLARC data tables. CLARC — Cleanup Levels and Risk Calculation — is a compendium of ...

Find a household hazardous waste disposal site in your county. Accepts: Household hazardous waste. Does not accept wastes from business unless it is a scheduled small business collection event. Check ...

Rainwater collection, including the use of rain barrels, has become more popular as a supplemental source of water. In 2009, we issued a rainwater use interpretive policy, which clarifies that you may ...