Heating Oil Tank cleanup site — Restorical Research
Seattle City South Lake Union Naval Reserve Ctr
860 Terry Ave N, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a property with a heating oil tank going back to 1940. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property served as the Naval Reserve Readiness Center, with the Navy occupying the site from 1940 and four underground heating fuel storage tanks installed as early as 1937. Those USTs, which stored No. 2 heating oil and diesel No. 1, were removed in 1993 after more than five decades of use. Remediation has included excavation and removal of 407.9 tons of contaminated soil, treatment of 11,881 gallons of petroleum-affected groundwater, recycling of 4,521 gallons of heating oil, and implementation of institutional controls through a Quit Claim Deed and a paver surface cover. Ecology continues to conduct periodic reviews of the site. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Heating Oil Tank
Address860 Terry Ave N, Seattle, King County
Historical UseHeating Oil Tank
Est. Operating Since1940
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (No. 2 heating oil / diesel No. 1) from underground storage tanks detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #3494

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 heating oil contamination at this former naval facility traces to underground storage tanks installed no later than the late 1930s — nearly five decades before 1986, when occurrence-based Commercial General Liability policies still carried no effective pollution exclusion. CGL policies issued to the operators of the Naval Reserve Readiness Center during its pre-1986 operational window may remain enforceable against costs already documented — UST removals, soil excavation, groundwater treatment, and institutional controls — as well as against future obligations tied to Ecology's ongoing periodic oversight of the site.

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.