Industrial & Manufacturing cleanup site — Restorical Research
Kent Asphalt Plant
18808 SE 256th St, Kent, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility predating 1986. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

This 3-acre site has operated as the Kent Asphalt Plant under Lakeside Industries, with historical activities including aggregate storage and processing, asphalt recycling, and the operation of a hot-mix asphalt batch plant. A 1985 USGS quadrangle map places the facility in existence at least by that year, establishing pre-1986 operations as the source of contamination. Remedial work has been ongoing since at least 2016 and has included extensive soil excavation; a 2018 assessment determined that soil contamination could not be entirely removed and that remediation options are still being re-evaluated. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address18808 SE 256th St, Kent, King County
Historical UseIndustrial & Manufacturing
Est. Operating SincePre-1986
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsSoil contamination from historical asphalt batch plant and aggregate processing operations
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #14712

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 contamination at this property is attributed to historical plant operations — not a recent incident — meaning the releases occurred across the same decades when occurrence-based CGL policies were the industry standard and lacked an effective pollution exclusion in Washington. With remediation options still under re-evaluation following a finding that excavation alone could not resolve all soil impacts, this site faces both unrecovered past cleanup expenditures and substantial future remediation costs. Historical carriers who issued CGL policies to the operators during the pre-1986 period may be obligated to fund both the work already completed and the remediation still ahead.

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.