Public Works cleanup site — Restorical Research
WSDOT Fish Barrier SR 108
update, Mason 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.

This Washington State Department of Transportation fish passage project at SR 108 MP 5.50 in Mason County involves contamination sourced from occupational vehicular discharges and highway runoff, with petroleum hydrocarbons, lead, and chromium identified in soil, sediment, and surface water. Planned remediation includes excavation and removal of petroleum-impacted soil, sediment, mulch, and debris to a depth of 2 feet in designated highway runoff corridors. The project also calls for stormwater management improvements and culvert design modifications to prevent ongoing contamination from vehicular runoff, reflecting a multi-year remediation and monitoring commitment. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Addressupdate, Mason County
Historical UsePublic Works
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons, lead, and chromium from highway runoff and vehicular discharges detected in soil, sediment, and surface water
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #17054

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 contamination here is tied to the ongoing operation of SR 108 itself — specifically, recurring vehicular discharges and highway runoff rather than a single discrete release event. Whether pre-1986 occurrence-based CGL policies are accessible at this site depends on establishing when SR 108 was in regular operation, a question the available site documents leave unresolved. If highway operations predated 1986, carriers who issued CGL policies during that window may have obligations under the occurrence-based coverage that was standard before effective pollution exclusions were introduced — making that historical record worth investigating before the remediation cost trail is closed.

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.