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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 stormwater discharged from different land uses: high density (HD) residential, low density (LD) residential, commercial, and industrial.

To meet the S8.D requirement, Phase I Permittees collected water quality and flow data, sediment data, and toxicity information from stormwater discharges during storm events.

Data and Resources

Additional Info

Field Value
Source https://data.wa.gov/resource/rc6b-fvgb
Author ECY DataSync
Last Updated July 22, 2025, 20:37 (UTC)
Created July 22, 2025, 20:37 (UTC)
1. http://www.ecy.wa.gov/programs/wq/stormwater/municipal/s8dswmonitoring.html
2. https://fortress.wa.gov/ecy/publications/SummaryPages/1503001.html
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Category Natural Resources & Environment
harvest_object_id b193904b-b5ee-4051-81bc-de3872ac3f09
harvest_source_id c4128faf-39ff-4aa3-918e-8a395702cab3
harvest_source_title washington-state