Industrial & Manufacturing cleanup site — Restorical Research
Ohno Construction Co
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1966. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup.

This property has operated as a construction company yard since at least 1966, when underground storage tanks were first installed to fuel Ohno Construction's fleet of heavy equipment. Four USTs totaling 4,400 gallons stored gasoline, diesel, fuel oil, and waste oil — one tank held leaded gasoline, and two older tanks were last used in August 1985. Between 2005 and 2007, all four tanks were excavated and removed along with 245 cubic yards of petroleum-impacted soil, with 195 cubic yards disposed offsite. Groundwater contamination has been documented at the site, and site assessment continued through 2015, but no active groundwater treatment has been undertaken. 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 Since1966
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline, diesel, fuel oil, waste oil) detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #6803

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.

Petroleum contamination at this site traces directly to underground storage tanks installed and operated from 1966 through at least 1985 — two full decades during which occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. Tank corrosion and pinhole failures over that period created the subsurface contamination now requiring remediation. The cleanup costs the property faces going forward — groundwater investigation, remedial design, and any required treatment — could plausibly be funded by historical carriers whose CGL policies were in effect during the years the tanks were leaking.

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.