Bulk Plant cleanup site — Restorical Research
McConkey Property
Tukwila, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a bulk fuel distribution terminal going back to 1982. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

The McConkey Property in Tukwila operated as a fuel storage facility for a former Hertz Equipment Rental operation, with two 5,000-gallon underground storage tanks installed in 1982 and used until March 1987. Leaks from the tanks and associated piping contaminated the site with benzene, diesel, and gasoline. Cleanup activities since 1990 have included the removal of three USTs, excavation of over 1,100 cubic yards of contaminated soil, onsite land farming of 850 cubic yards, application of Envirorags for groundwater free-product absorption, and installation of monitoring wells. As of 2013, an estimated 400–600 cubic yards of impacted soil remained, with additional excavation planned during future redevelopment. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Bulk Plant
AddressTukwila, King County
Historical UseBulk Plant
Est. Operating Since1982
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsBenzene, diesel, and gasoline (petroleum hydrocarbons) from leaking USTs detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #11275

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 underground storage tanks at this property were installed and actively leaking before 1986 — the period when occurrence-based Commercial General Liability policies were the industry standard and carried no effective pollution exclusion. The benzene, diesel, and gasoline contamination documented here originated from operational releases during the 1982–1987 window, precisely the type of gradual, pre-cutoff release those policies were written to cover. Documented remediation costs spanning more than two decades — UST removals, soil excavation, land farming, groundwater treatment, and long-term monitoring — combined with hundreds of cubic yards of impacted soil still awaiting removal represent expenditures that historical carriers who issued CGL policies during that operational period 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.