Public Works cleanup site — Restorical Research
WA DOT SR 202 520 to Sahalee Way
Sr 202 & Sahalee Way, Redmond, 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 those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

Three abandoned underground storage tanks were discovered in the SR 202 right-of-way during a 2004 WSDOT road widening project near Sahalee Way in Redmond, indicating a former commercial fueling operation at the site. In a separate 2006 incident, petroleum contamination identified as transformer oil or hydraulic fluid was found during bridge pier drilling at the nearby Bridge 47A location along Evans Creek. Diesel-range petroleum hydrocarbons in groundwater were confirmed to exceed MTCA Method A cleanup levels, and the site remains under active cleanup as part of the Standard Cleanup program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
AddressSr 202 & Sahalee Way, Redmond, King County
Historical UsePublic Works
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsDiesel-range petroleum hydrocarbons and unspecified petroleum products in groundwater; transformer oil or hydraulic fluid near Bridge 47A
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #2840

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 three abandoned USTs found along SR 202 suggest a former fueling facility that may have operated well before 1986, but no installation dates or operator records have been located to confirm that timeline — the pre-1986 connection rests on the circumstantial 25-year tank lifecycle estimate. Complicating the picture further, the separate 2006 transformer-oil release at Bridge 47A represents a distinct, recent contamination event at the same site. These dual contamination sources — one potentially decades-old, the other definitively tied to 2006 construction activities — make the historical insurance landscape for this property complex and warrant careful investigation of any CGL policies that may have been in force during the USTs' operating life.

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.