Public Works cleanup site — Restorical Research
WA DOT SR 202 Expansion UST
20429 NE Redmond Fall City Rd, Redmond, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

During a Washington State Department of Transportation road expansion project along SR 202, a contractor discovered a 660-gallon gasoline underground storage tank on WSDOT property and pulled it in August 2021; the tank was found to have a hole in the bottom. Petroleum-impacted soil was excavated at the time of tank removal, with the initial release report having been filed in January 2021. Further site characterization and cleanup remain necessary before the site can reach closure. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Address20429 NE Redmond Fall City Rd, Redmond, King County
Historical UsePublic Works
Est. Operating SincePre-1986
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons from a leaking underground storage tank detected in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #16986

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 tank's unregulated status — meaning it was never registered under the federal Underground Storage Tank rules that took effect in 1988 — strongly implies installation and active use well before 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. A hole in the tank bottom is consistent with long-term degradation from historical gasoline storage, pointing to a release that likely began during the pre-1986 coverage window. The characterization and remediation costs still ahead for this site could plausibly be funded through historical CGL policies tied to the era when the tank was actively in service.

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.