Industrial & Manufacturing cleanup site — Restorical Research
Boeing North Field Green Hornet Area
7500 E Marginal Way S, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1928. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property at Boeing Field has served as part of Boeing's manufacturing and delivery operations since the late 1920s, with multiple facility buildings at the North Field location reflecting decades of continuous industrial use. Confirmed petroleum-related organic contamination in groundwater led to the site's enrollment in Washington's Standard Cleanup program, and remediation work is underway. The property, owned by King County Airport, falls within the Georgetown Steam Plant Agreed Order area. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address7500 E Marginal Way S, Seattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1928
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsNon-halogenated organic compounds (petroleum-related) confirmed in groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7504

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.

Boeing's industrial operations at this site began nearly six decades before 1986, when occurrence-based Commercial General Liability policies were the industry standard and carried no effective pollution exclusion in Washington. Petroleum-related contamination confirmed in groundwater beneath this long-operating manufacturing facility represents the type of gradual, operations-linked release those pre-1986 policies were written to cover. With cleanup now underway, the remediation costs being incurred — and those still ahead — may be recoverable from historical carriers whose CGL policies were in effect during the decades of pre-1986 Boeing operations.

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.