Public Works cleanup site — Restorical Research
USCG Support Center N Annex
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility going back to 1960. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This Seattle facility operated as a U.S. Coast Guard support installation, with five underground storage tanks — two 115-gallon diesel tanks and three 500-gallon gasoline tanks — installed in 1960 to fuel the government fleet and support base operations. Cleanup work included the removal of all five tanks along with associated piping, fixtures, liquids, and accumulated sludges; all tanks were purged and inerted, and removed materials were disposed of in accordance with state regulations. Cleanup at the site is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
AddressSeattle, King County
Historical UsePublic Works
Est. Operating Since1960
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline and diesel) from underground storage tanks in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #10170

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 petroleum storage infrastructure at this property was installed in 1960, more than two decades before occurrence-based Commercial General Liability policies began incorporating effective pollution exclusions in 1986. The documented remediation work — tank removals, excavation of infrastructure, and regulated disposal of gasoline- and diesel-affected materials — directly addresses contamination tied to those pre-1986 UST operations. Historical carriers who issued CGL policies during the facility's operational window may be obligated both to recover those cleanup costs and to fund remediation that continues 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.