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Washington State Air Quality
State of Washington —
The links on this page provide access to the Washington State Department of Ecology's Air Monitoring Network, which tracks various air pollutants at more than six... -
State
WA GHG Reporting Multi-Year Dataset
State of Washington —
This dataset contains data reported to Ecology as of December 15, 2018. The reported emissions are preliminary and have not been fully verified by Ecology. This... -
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GHG Reporting Program Publication
State of Washington —
This dataset contains data reported to Ecology as of January 24, 2025. This dataset contains both reported and covered emissions. Some of these emissions have been... -
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Integrated Site Information System(ISIS) Website - (Cleanup Site & Underground Storage Tank(UST) information)
State of Washington —
This is a link to the ISIS database at Washington Department of Ecology - Toxics Cleanup Program. The ISIS Web reporting portal provides a selection of standard... -
State
2017 Greenhouse Gas Report Facility Data
State of Washington —
The map contains greenhouse gas (GHG) data reported to Ecology as of December 15, 2018. The reported emissions are preliminary and have not been fully verified by... -
State
State Environmental Policy Act (SEPA) Register
State of Washington —
This dataset contains a list of SEPA and NEPA records posted by the Department of Ecology since 2000. -
State
Western Washington Hydrology Model (WWHM)
State of Washington —
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers. -
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Summer Low Flow Indicator 1975-2017
State of Washington —
Summer Low Flow Trend Indicator results, statewide, updated through Oct 2017. This information is updated annually with an additional year of flow data. These results... -
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Municipal Stormwater Permit Outfall Data
State of Washington —
Special Condition S8.D of the 2007-2012 Phase I Municipal Stormwater Permit required permittees to collect and analyze data to evaluate pollutant loadings of...