Public Works cleanup site — Restorical Research
Qwest W00B45
7235 S 228th St, Kent, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility going back to 1985. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property was developed in 1985 as a truck maintenance and warehouse facility for U S WEST Communications, with two 12,000-gallon underground storage tanks — one unleaded gasoline, one diesel — installed to fuel the company's own vehicle fleet. Both USTs and their associated fuel piping and dispensers were removed in 1998; Voluntary Cleanup Program remediation extended through 2025 and included excavation of 316 tons of petroleum-impacted soil, removal of an oil-water separator and an abandoned corrugated metal pipe in 2020 (recovering 69.3 cubic yards of contaminated soil), and quarterly groundwater monitoring from 2021 through 2023. All excavations were backfilled with clean material and the site has received a No Further Action determination. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Address7235 S 228th St, Kent, King County
Historical UsePublic Works
Est. Operating Since1985
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (gasoline and diesel TPH) from leaking USTs detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #15277

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 USTs here were installed in 1985 — the year before occurrence-based Commercial General Liability policies began incorporating effective pollution exclusions — and the petroleum contamination they generated was a direct product of that pre-1986 operational period. Documented remediation expenditures span nearly three decades, from tank removal in 1998 through soil excavation, separator removal, and long-term groundwater monitoring concluding in 2025. Historical CGL carriers whose policies covered U S WEST Communications during that 1985–1986 operational window may still be obligated to contribute to those cleanup costs.

Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.

Recovering Costs from an Older Cleanup

If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.

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 — Cost Recovery
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim and negotiate recovery of costs already incurred. Restorical's forensic accounting team re-establishes and documents past cleanup expenditures, managing the claim process to ensure the insurance companies fulfill their obligation 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.