Farm/Agriculture cleanup site — Restorical Research
18209 136th Ave SE Land Trust
Yelm, Thurston County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a farm and agricultural operation predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This Yelm-area residential property had an underground gasoline storage tank installed on the west side of the garage, used — based on the property type and rural setting — for private agricultural or property-maintenance fueling. The tank had been out of service for approximately 25 years when a 2015 complaint triggered investigation; subsequent remediation included removal of the leaking tank and excavation of contaminated soil, which was transported to a landfill. Groundwater contamination was encountered at roughly three feet below ground surface and remains at the site, which awaits further remediation. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Farm/Agriculture
AddressYelm, Thurston County
Historical UseFarm/Agriculture
Est. Operating SincePre-1986
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsGasoline (petroleum hydrocarbons with lead) detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #12714

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.

Two independent indicators place this tank's operation squarely in the pre-1986 window: the tank's cessation date of approximately 1990 after roughly 25 years out of service, and the detection of lead in the soil alongside gasoline contamination — a direct signature of leaded fuel formulations phased out in the early 1980s. Occurrence-based CGL policies issued before 1986 carried no effective pollution exclusion and may be triggered by contamination events tied to that operational period. The cleanup expenditures already incurred — tank removal, excavation, groundwater pumping attempts — and the remediation still required to address residual groundwater contamination represent costs that historical carriers whose policies covered this property during that window may be obligated to fund.

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.