Landfill cleanup site — Restorical Research
SW Harbor Project Seattle Steel
Harbor Ave SW & SW Hanford St, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a landfill predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property, the former Seattle Steel, Inc. site on Harbor Avenue SW, encompasses a closed municipal solid waste landfill where soil and slag exceeding state cleanup standards are contained on-site under engineered covers. A Consent Decree for Cleanup Action was entered in 1995, and remediation has included landfill gas collection and treatment infrastructure — enhanced as recently as 2024 — as well as a network of monitoring wells and long-term inspections and maintenance. Groundwater use in the project area remains restricted, and the site is currently in an active operations and maintenance phase. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Landfill
AddressHarbor Ave SW & SW Hanford St, Seattle, King County
Historical UseLandfill
Est. Operating SincePre-1986
StatusCleanup Complete — Active O&M/Monitoring
Contamination & Investigation
Site Assessment Summary
ContaminantsLandfill gas, impacted soil and slag exceeding cleanup standards, and restricted groundwater beneath the former landfill footprint
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #2930

Why Historical Insurance Policies May Be Accessible

Pre-1986 Commercial General Liability (CGL) policies were occurrence-based and did not contain an effective pollution exclusion in Washington. If contamination occurred while those policies were active, those historical insurance carriers may still have a legal obligation to fund the cleanup costs, even if the business closed or the property changed hands.

The contamination here — landfill gas migration, impacted soil and slag, and managed groundwater — originated from steel mill and municipal solid waste landfill operations that, given the 1995 Consent Decree governing a facility already described as former and closed, almost certainly predate 1986 by decades. Occurrence-based Commercial General Liability policies in force during that pre-1986 operational window carried no effective pollution exclusion and remain enforceable today. The remediation expenditures documented at this site — engineered containment and capping, gas collection and treatment systems, and ongoing long-term monitoring — represent costs that historical carriers who issued policies to the operators of Seattle Steel and the landfill may be obligated to recover.

Restorical's role is to locate viable historical policies, determine whether a successful coverage claim is possible, and assist our clients and their legal counsel to obtain insurance coverage. Restorical then manages the claim, including accounting, to ensure the cleanup is funded in a timely manner.

What We Look For

  • Historical insurance policies (pre-1986)
  • Policy numbers, carrier names, and coverage periods
  • Connection between contamination timing and policy period
  • Evidence linking cleanup obligation to insured activity

What We Deliver

  • Historical Coverage Chart
  • Trigger Analysis & Property/Policy Nexus
  • Coverage strategy with recommendations
  • Insurance funding for your remediation
  • Claims Management & Forensic Accounting

The Restorical Proven Process

Task 1 — Research and Analysis
Restorical searches for viable historical insurance policies, researches the site history, analyzes the contamination impacts, and underwrites potential coverage — including a proprietary trigger analysis. At the end of Task 1, we provide a clear yes or no on whether a successful cost recovery is possible, along with a strategy and recommendation specific to your situation, even if you are not the policyholder.
Task 2 — Coverage and Funding
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim, negotiate and secure insurance coverage. Restorical will manage the ongoing claim process, including accounting to ensure the insurance companies are funding your remediation in a timely manner.

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This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.