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.

Most Municipal Separate Storm Sewer System (MS4) permittees in the State of Washington are a part of the Regional Stormwater Monitoring Program (RSMP). One part of the RSMP is the Source Identification Information Repository. Permittees may choose to enter their permit-required illicit discharge data into this dataset using a form, simplifying both their reporting processes and analyses for the RSMP.

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.

Most Municipal Separate Storm Sewer System (MS4) permittees in the State of Washington are a part of the Regional Stormwater Monitoring Program (RSMP). One part of the RSMP is the Source Identification Information Repository. Permittees may choose to enter their permit-required illicit discharge data into this dataset using a form, simplifying both their reporting processes and analyses for the RSMP.