Industrial & Manufacturing cleanup site — Restorical Research
Signal Equipment Inc
Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1982. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

Signal Equipment Inc. operated an equipment warehouse at this Seattle property, with a 10,000-gallon underground storage tank commissioned in 1982 for storing and transferring gasoline to company vehicles. A leaking UST was reported in 1991, prompting in-place closure — the tank was inerted with dry ice and filled with concrete slurry. Subsequent remediation has included groundwater treatment via air sparging and air stripping, and the site entered the Voluntary Cleanup Program in 2005 for ongoing characterization, with a passive vapor extraction system recommended to address residual contamination. 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 Since1982
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline) from a leaking UST detected in groundwater and soil vapor
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #6477

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 contamination at this property originated from an underground storage tank installed in 1982, four years before occurrence-based Commercial General Liability policies gave way to claims-made forms with absolute pollution exclusions. Cleanup costs here — tank closure, groundwater remediation, years of site characterization under the VCP, and a recommended vapor extraction system — stem directly from a release tied to that pre-1986 fueling infrastructure. Historical carriers who issued CGL policies covering Signal Equipment's operations during that window may still be obligated to recover past remediation expenditures and to fund the cleanup work that remains.

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.

Ready to learn more?

Contact Us

This analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.