The documents linked from this page have been produced in connection with the Remedial Investigation/Feasibility Study (RI/FS) being conducted by the Lower Duwamish Waterway Group (LDWG). Because a large number of documents have been produced over the course of this project, the documents are provided on a series of pages linked below, generally grouped under the tasks outlined in the Statement of Work that authorized the RI/FS. The Phase 1 RI was based on data that existed prior to LDWG's data collection efforts and is superseded by the Phase 2 RI, which is now called the Remedial Investigation Report.

Unless otherwise noted, these documents are PDFs.

Pre-Design Studies

Activated Carbon Pilot Study

Fishers Study

Authorizing Documents and Early Tasks

Feasibility Study (FS)

Remedial Investigation

Phase 1 RI Report and Data Needs

Phase 2 Work Plan and QAPPs for Additional Studies

Sediment, Porewater, Seep, and Bathymetry Data Reports

Tissue and Organism Data Reports

Phase 2 Technical Memoranda

Baseline Human Health and Ecological Risk Assessments

Phase 2 RI Report