PFAS cleanup site — Restorical Research
North Boeing Field Georgetown Steam Plant
7370 E Marginal Way S, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a facility using PFAS-containing firefighting foam going back to 1906. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

The Georgetown Steam Plant was built in 1906, ceased power production in 1964, and remained on standby until 1977. Beginning in 1961, Boeing was permitted to use a portion of the adjacent North Boeing Field for fire drill training, introducing PFAS compounds to the site. Used transformer oil was delivered to the Steam Plant between 1953 and 1965, again from 1972 through 1974, and once more in 1980; underground storage tanks on the property were removed in 1987, confirming they were installed and operating well before that year. EPA identified contamination at the site in 1984 based on 1982 sampling data, and cleanup has since included soil and structure excavations, tank removal, concrete pad and flume removal, sediment cleanup in Slip 4, and ongoing long-term stormwater treatment. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former PFAS
Address7370 E Marginal Way S, Seattle, King County
Historical UsePFAS
Est. Operating Since1906
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPFAS from fire drill training activities, transformer oil constituents, and petroleum hydrocarbons from underground storage tanks in soil, groundwater, and sediment
Media ImpactedSoil, Groundwater, Surface Water, Air
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #4765

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.

Contamination at this property originates from industrial and fire-training operations spanning multiple decades before 1986 — transformer oil deliveries from the 1950s through 1980, underground storage tanks operated throughout that same era, and Boeing's fire drill training at the adjacent field beginning in 1961. Occurrence-based CGL policies issued to the operators during those years had no effective pollution exclusion, and the slow, undiscovered releases associated with fire-training foam and transformer oil are precisely the type of contamination those policies were written to address. The documented remediation costs here — soil excavations, tank removals, sediment cleanup in Slip 4, and continuing stormwater treatment — represent expenditures that historical carriers with policies in force during that operational window may be obligated both to recover 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.

Ready to learn more?

Contact Us

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