Public Works cleanup site — Restorical Research
King County Metro Transit Ryerson Base
Seattle, 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 operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

The King County Metro Transit Ryerson Base at 1220 Fourth Ave S in Seattle has operated as a municipal transit maintenance facility, with contamination discovered during a Hydraulic Lifts Replacement Project in Bay 6. Soil sampling conducted in December 2014 identified petroleum-contaminated soil classified as WDOE Category 3, along with lead concentrations of up to 21.3 mg/Kg, consistent with long-term vehicle maintenance operations. Wood pilings with a creosote-like odor were also observed on the property, further indicating an older, established facility. Soil excavation and waste profiling for disposal are underway as part of the cleanup. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
AddressSeattle, King County
Historical UsePublic Works
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons and lead detected in soil
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7729

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 and lead contamination at this transit maintenance base is consistent with decades of vehicle fueling and servicing operations that predate 1986, when occurrence-based Commercial General Liability policies carried no effective pollution exclusion. Lead levels in the soil point to an era when leaded gasoline was standard — placing the contamination origin squarely within the pre-1986 policy window. The remediation costs already incurred and still ahead — excavation, soil profiling, regulated disposal — represent expenditures that historical carriers who covered the facility during those earlier decades of operation may be obligated both to recover and to fund going forward.

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.