Landfill cleanup site — Restorical Research
Kitsap County Silverdale Landfill
Silverdale, Kitsap County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a landfill going back to 1947. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

The Kitsap County Sanitary Landfill operated as a mixed municipal solid waste disposal site from 1947 to 1976, accepting an estimated 262,536 cubic yards of waste before permanent closure to dumping. In 1998, a pond remediation project addressed petroleum-contaminated sediment through test-pit excavation and pond enlargement to manage ongoing stormwater infiltration. The site remains enrolled in the Standard Cleanup program with further remediation pending. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Landfill
AddressSilverdale, Kitsap County
Historical UseLandfill
Est. Operating Since1947
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons detected in pond sediment
Media ImpactedSoil, Groundwater, Surface Water, Air
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #3741

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.

Waste disposal operations at this landfill spanned nearly three decades before 1986, the period when occurrence-based Commercial General Liability policies were the industry standard and carried no effective pollution exclusion in Washington. The petroleum contamination documented in the site's sediment traces directly to those historical operations, and the stormwater management obligations that persist today are a continuing consequence of the same pre-1986 waste-acceptance activity. Responsible parties now facing the costs of future remediation may have recourse against historical carriers whose policies were in force during the landfill's operational years.

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.