Industrial & Manufacturing cleanup site — Restorical Research
Jacobson Terminals Marine
5350 30th Ave NW, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1890. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property has been in continuous industrial use since approximately 1890, beginning as a lumber mill through the 1930s, transitioning to storage operations from the 1940s, and serving as a marine support facility and boat storage since 1975. A historical release of transformer oil on the northern portion of the site created a plume of polychlorinated biphenyls (PCBs) and chlorinated benzene compounds in groundwater. Cleanup under the Voluntary Cleanup Program has included soil excavations totaling over 160 tons, UST removal, pump-and-treat groundwater systems, permeable treatment walls using granular activated carbon and zero-valent iron, and in-situ injection of Fenton's reagent and oxygen-releasing compounds. Remediation is ongoing, with multi-year plans involving institutional controls and continued monitoring. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address5350 30th Ave NW, Seattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1890
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPolychlorinated biphenyls (PCBs) and chlorinated benzene compounds detected in groundwater from a historical transformer oil release
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #4860

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 at this property — PCBs and chlorinated benzenes from a transformer oil release, compounded by contributions from upgradient industrial operations dating to the 1940s — originated decades before 1986. Occurrence-based CGL policies issued to operators during the lumber mill, storage, and early marine-facility eras carried no effective pollution exclusion under Washington law and remain enforceable today. The site's extensive and still-growing remediation costs — soil removal, groundwater treatment systems, reactive barriers, chemical injections, and long-term monitoring — represent expenditures that historical carriers may be obligated both to reimburse and to fund going forward.

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.