Otak 11/23/2020 - Laserfiche WebLink

City of Everett Receiving Waters Assessment and Update of Surface Water Comprehensive Plan Exhibit A - Scope of Work Otak Project 33335 October 30, 2020 Project Understanding The City of Everett published a Surface Water Comprehensive Plan (SWCP) in 2017. Since that time, the Phase II NPDES Municipal Stormwater Permit was re-issued and became effective on August 1, 2019. It requires the City to develop a Stormwater Management Action Plan (SMAP). The SMAP must be for a high priority catchment that outlines strategies and projects to improve the quality of the receiving water. The first steps of this process are described in Ecology's Storm water Management Action Planning Guidance document (SMAP Guidance) section titled Receiving Water Conditions Assessment. Everett has applied for an Ecology grant to complete the subsequent Receiving Water Prioritization and Stormwater Management Action Plan. Since adoption of the SWCP, additionally, local and state agencies have published plans and studies related to riparian and aquatic habitat conditions near Everett, Water Resource Inventory Area (WRIA) 7 and 8 plans have been updated, the City has made changes to its separated and combined sewer systems resulting in two new separated stormwater basins, and some stormwater capital improvements from the SWCP have been completed. The City has requested Otak's assistance to update the SWCP to incorporate new information as described above and to develop and document methodologies relating to the SMAP Receiving Water Conditions Assessment. For this scope of services, Otak will update the gaps between the processes and steps defined in the SMAP Guidance section titled the Receiving Water Conditions Assessment(steps 1 through 4) and the narrative in the SWCP. It is assumed that water flow and habitat are sufficiently assessed in the SWCP for SMAP analyses. In basins where separate water flow and habitat sections do not exist in the 2017 SWCP, they will not be added. The SWCP will be updated to provide a more detailed analysis of existing and future land uses as they relate to water quality, an analysis of the influence of Everett's Municipal Separate Storm Sewer System (MS4) on the receiving water, and an assessment of the relative conditions of the basins within the city. Additionally, Otak will write basin plans for the two additional separated stormwater basins -Waterfront and Riverside. New CIPs identified by the City will be added to the SWCP and scored using the existing metric. This project will be done in close collaboration with City staff, and City staff will take the lead on some tasks that are crucial to completing the scope of services. The scope of services identifies those tasks the City has agreed to perform. Project Guidance/Reference Documents include: 1. Project scoping meetings, emails and telephone calls between the City of Everett and Otak on October 2nd 2020, October 19th—October 21st, 2020 Receiving Waters Assessment and Update of Surface Water Comprehensive Plan 1 Scope of Work Otak