Gas Station cleanup site — Restorical Research
DSHS S Graham St
3600 S Graham St, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a gasoline service station going back to 1948. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

The DSHS S Graham St property at 3600 S Graham St carries petroleum contamination traced to historical releases from two adjacent former gas stations on Martin Luther King Jr. Way — one involving former waste oil underground storage tanks at 6061 MLK Jr. Way, the other a gasoline station at 6007 MLK Jr. Way with operations dating to at least 1948. Site investigation identified oil, diesel, and benzene compounds in groundwater beneath the property. Remediation work at the site has included the removal of four 10,000-gallon underground storage tanks in 1989 and 1998, management of impacted soil stockpiles, and semi-annual to quarterly groundwater monitoring conducted since 1999; a 2001 air sparge feasibility test was cancelled due to site conditions, and no final cleanup has yet commenced. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Gas Station
Address3600 S Graham St, Seattle, King County
Historical UseGas Station
Est. Operating Since1948
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons including diesel, gasoline, and benzene compounds detected in soil and groundwater
Media ImpactedSoil, Groundwater, Air
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #16835

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 releases that contaminated this property originated from adjacent gas station operations predating 1986 — including a station at 6007 MLK Jr. Way active since at least 1948 and USTs that stored leaded gasoline, confirming decades of pre-1986 operations. Occurrence-based Commercial General Liability policies issued to those adjacent operators during that era carried no effective pollution exclusion and remain enforceable. The investigation and monitoring costs already incurred at this site, and the remediation expenditures still ahead, represent potential claims against the historical carriers whose policies were in force when those releases first occurred.

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.