Industrial & Manufacturing cleanup site — Restorical Research
Glacier Northwest Inc
5900 W Marginal Way SW, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1930. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property along West Marginal Way in Seattle has been the site of multiple industrial operations dating to the 1930s, including a suspected log treatment area, a U.S. Army Whetlerite manufacturing facility, and a Reichhold resin and pentachlorophenol/sodium pentachlorophenate laboratory and manufacturing operation. Historical contamination from these facilities prompted a Standard Cleanup under Ecology oversight, with a multi-year Remedial Investigation/Feasibility Study now underway — fieldwork spanning at least twelve months, semi-annual groundwater monitoring planned for two years, historical dredging, shallow investigative excavations, and the planned abandonment of a historical stormwater pipe by capping and filling with concrete. Cleanup work is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address5900 W Marginal Way SW, Seattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1930
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPhenols, hexachlorobenzene, dioxins/furans, metals, and PCBs in soil and groundwater from historical industrial operations
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #599

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.

Industrial operations at this site produced contamination — phenols, hexachlorobenzene, dioxins and furans, metals, and PCBs — that originated decades before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The operators and facility owners who held CGL policies during the 1930s through the mid-1980s may still bear coverage obligations for the remediation costs now being incurred. With a multi-year investigation and cleanup still in progress, both past expenditures and future remediation costs represent potential recovery targets under those historical policies.

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.