Industrial & Manufacturing cleanup site — Restorical Research
Union Pacific Railroad Diesel Spill 5.16.07
Nisqually Mp 24.6 Lines 1 & 2, Pierce County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1883. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

This active rail corridor at Nisqually Mile Post 24.6 is operated by Union Pacific Railroad on BNSF Railway tracks. A train derailment on May 16, 2007 released petroleum contamination into groundwater, surface water, and sediment, with LNAPL identified in monitoring well MW-4 and petroleum-contaminated seeps observed discharging toward adjacent wetlands. Contaminants confirmed at the site include petroleum-diesel, non-halogenated solvents, and PAHs. The site entered the Voluntary Cleanup Program and remediation is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
AddressNisqually Mp 24.6 Lines 1 & 2, Pierce County
Historical UseIndustrial & Manufacturing
Est. Operating Since1883
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum-diesel, non-halogenated solvents, and PAHs detected in groundwater, surface water, and sediment; LNAPL identified in monitoring well MW-4
Media ImpactedSoil, Groundwater, Surface Water, Sediment
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #13209

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.

This rail line traces its operational history to the Northern Pacific Railroad, which completed its transcontinental route through Washington State in 1883 — more than a century before occurrence-based Commercial General Liability policies gave way to claims-made forms with pollution exclusions. Both Union Pacific and BNSF predecessor railroads have operated continuously in Washington since the 1800s, a span during which CGL carriers routinely issued occurrence-based policies covering pollution liabilities without exclusion. The documented remediation costs at this site — addressing petroleum contamination across groundwater, surface water, and sediment — represent expenditures that historical carriers from that pre-1986 window 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.

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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.