Industrial & Manufacturing cleanup site — Restorical Research
Seattle Steam Co Post Ave
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1900. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This property has operated as an industrial steam and power plant since the early 1900s, supplying commercial steam to downtown Seattle buildings using generators fueled by Bunker 'C' oil stored in large underground storage tanks. A site hazard assessment conducted in 1998 and 1999 identified total petroleum hydrocarbon (TPH) contamination in soil and groundwater above MTCA cleanup levels, with an estimated 1,088 cubic yards of contaminated soil on site. No active remediation has commenced, and the site remains in the awaiting-cleanup phase. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
AddressSeattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1900
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsTotal petroleum hydrocarbons (TPH) from Bunker 'C' oil storage in underground tanks, detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #1330

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 TPH contamination at this property traces directly to underground fuel storage tanks that supplied Bunker 'C' oil to the plant's generators across decades of continuous operation beginning well before 1986. Slow, ongoing petroleum releases from long-running underground storage are precisely the liability category that occurrence-based CGL policies — still the industry standard through the mid-1980s and carrying no effective pollution exclusion — were written to cover. The investigation costs already incurred and the remediation costs ahead for over 1,000 cubic yards of impacted soil and affected groundwater could plausibly be funded by historical carriers whose policies were in force during the plant's twentieth-century operating history.

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.