We're updating requirements for protecting water quality when washing and maintaining bridges and ferry terminals.

Low Impact Development (LID) is a stormwater and land-use management strategy that tries to mimic natural hydrologic conditions by emphasizing the following techniques: Conservation Use of on-site ...

The Emergency Planning and Community Right-to-Know Act (EPCRA) protects public health, safety, and the environment from chemical hazards. This is done by requiring federal and state governments, local ...

The Lower Peshastin Creek Restoration Project cleaned up contamination, reconnected the creek to its historical channel, and ...

In Washington, businesses must designate their waste to see if it meets Washington state-only criteria. This is in addition to the first four steps of waste designation. Designating for Washington ...

We issue burn permits for agricultural, outdoor, and residential burning to protect healthy air in Washington. The type and location of burning you are planning will determine if you need a permit.

If you have a low-risk site that meets specific criteria, you might be able to use a model remedy for your cleanup. Model remedies are pre-approved ways to clean up certain types of contamination in ...

The following templates are based on applicable SEPA rule sections and other guidance materials. Lead agencies are encouraged to modify these templates for their own use and add information for ...

Under the state Growth Management Act, local governments are required to use the best available science to develop their policies and regulations for managing and protecting wetlands in their ...

We estimate there are thousands of abandoned wells in Washington. If you find an abandoned well on your property, you are required to work with a licensed well driller to properly close it up, a ...

*This is the corrected chemical name. The name will be updated in WAC 173-334-130 during the next rulemaking.

Commercial and industrial businesses that emit large amounts of air pollution must get an air operating permit. An air operating permit is a master document that lists all of the air pollution ...