Industrial & Manufacturing cleanup site — Restorical Research
Northwest Pipeline Sno Compr
22902 Echo Lake Rd, Snohomish, Snohomish County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1965. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property has operated as a natural gas compressor station facility since the mid-1960s, constructed and operated by Northwest Pipeline Corporation — later Williams Northwest Pipeline, LLC — on an approximately 5.5-acre fenced enclosure in Snohomish County. Contamination from petroleum hydrocarbons, mercury, and other metals originated from compressor operations, underground storage tanks, and mercury-metering equipment documented in service since at least the late 1960s. Cleanup under the Voluntary Cleanup Program has included UST remediation, bioremediation of oil contamination, a major soil excavation in 2015 that removed 2,197 tons of contaminated material, and continuous groundwater monitoring ongoing since 2005. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address22902 Echo Lake Rd, Snohomish, Snohomish County
Historical UseIndustrial & Manufacturing
Est. Operating Since1965
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons, mercury, and other metals detected in soil and groundwater
Media ImpactedSoil, Groundwater, Air
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #4838

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 hydrocarbons, mercury, and metals found at this compressor station are the product of industrial operations that commenced more than two decades before 1986, the year occurrence-based Commercial General Liability policies ceased to reliably cover pollution claims. Northwest Pipeline Corporation's pre-1986 CGL carriers — covering a facility whose mercury meters alone had logged roughly two decades of continuous service by 1986 — issued policies with no effective pollution exclusion under Washington law. The documented remediation expenditures here, spanning UST removals, bioremediation, over 2,197 tons of excavated soil, and two-plus decades of groundwater monitoring, represent costs those historical carriers 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.