Started in February 2023, we hold quarterly auctions where businesses and individuals participating in Washington's cap-and-invest program can buy emissions allowances. To participate in these ...

The Walla Walla basin extends into both Washington and Oregon, and crosses Tribal boundaries. The basin has a long history of challenges with water availability, including over appropriation of water ...

A 2016 Washington State Supreme Court decision changed how counties decide to approve or deny building permits that use wells for a water source. In the Whatcom County vs. Hirst, Futurewise, et al.

12736 (no electronic documents as of October 2017) Frontier Corner 12737 (no electronic documents as of October 2017) Fitzgerald Motors ...

Old orchards in Central Washington left lead and arsenic in soil. Builders must check land history, test soil, cleanup ...

We and local clean air agencies monitor and track emissions to make sure levels of outdoor air pollutants meet federal and state air quality standards. We focus on EPA's "criteria" pollutants and ...

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 ...

An air emissions inventory is an itemized list of the amount of air pollution (criteria, precursor, and hazardous air pollutants) from various sources. We calculate an air emissions inventory using ...

Counties and cities in Washington are required to periodically review and update their Critical Areas Ordinances (CAOs) under the state Growth Management Act. One element of a CAO is a ...

A federal or state legal standard outside the immediate purview of the Model Toxics Control Act that must be met (applicable) or should be met (relevant and appropriate) when cleaning up a site. An ...

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 ...

The draft permit we proposed to reissue to the city of Montesano Wastewater Treatment Plant authorizes the discharge of treated domestic wastewater into the Chehalis River. You can view the documents ...