Industrial & Manufacturing cleanup site — Restorical Research
Tyee Lumber & Manufacturing
Auburn, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1957. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This Auburn property operated as a wood treatment facility under the name Tyee Cedar and Lumber (formerly Tyee Lumber and Manufacturing) from 1957 to 1969, during which wood gutters were dipped in a 5% pentachlorophenol solution for wood preservation. The site subsequently operated as a lumber yard from 1974 onward and has been listed on Ecology's Contaminated Sites List since October 1984. Cleanup activities have included the removal of two underground storage tanks in the early 1990s and the relocation of pentachlorophenol dip tanks; no active remediation of the soil contamination has yet commenced. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
AddressAuburn, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1957
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPentachlorophenol (PCP) in soil from historical wood treatment dip tank operations
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #1383

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 pentachlorophenol contamination at this property traces directly to wood treatment operations conducted between 1957 and 1969 — more than a decade before 1986, when occurrence-based Commercial General Liability policies still lacked effective pollution exclusions in Washington. Carriers who issued CGL policies to the wood treatment operator during that window may be obligated to fund the investigation, remedial design, and cleanup costs the property now faces. With the site still awaiting active remediation after more than four decades on Ecology's Contaminated Sites List, the recovery opportunity against those historical policies remains open.

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.