The Hylebos Waterway Sediment Remediation EPA Superfund site involved more than $10 million of studies, assessments, and pilot programs. During the subsequent $50 million remediation (2003 – 2006), over 400,000 cubic yards of PCB impacted sediment was dredged for upland disposal.
DOF’s innovations on this very complicated project included many unique state of the art design components that set new standards for sediment remediation. Among these elements were joint inspector/dredge operator evaluation of dredged material during dredging operations and real-time sampling behind the dredge.
DOF provided the following services:
- Managed pre-design studies, assessments, and pilot programs
- Prepared project design plans (design analysis report, plans & specifications, and cost estimate)
- Prepared supporting plans (CQAP, Health and Safety Plan)
- Coordinated shoreline and in water remediation with federal, state, and local agencies
- Prepared construction bid documents and negotiated contractor construction contract documents
- Prepared RFI responses, reviewed submittals, and managed construction meetings
- Conducted field inspections and observations documented by daily field reports and photos
- Prepared progress reports for EPA
- Conducted real-time contaminated sediment sampling behind dredge
- Conducted real-time water quality monitoring and provided online results
- Prepared removal action completion report for EPA