Industrial & Manufacturing cleanup site — Restorical Research
BF Block
3408 Woodland Park Ave N 3415 3425 Stone Way N & 1109 N 35th St, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1940. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This Seattle city block has hosted successive heavy industrial uses since at least the 1940s, including a Diamond Drill tool manufacturer (circa 1940s to 1970s), former auto wreckers and fuels operations (circa 1930s to 1940s), and a former gasoline station — with historical fill soils containing polyaromatic hydrocarbon-impacted material dating to the late 1930s. That layered industrial history has left the site with widespread soil and groundwater contamination including carcinogenic PAHs (cPAHs), naphthalene, and petroleum hydrocarbons linked to waste products from coal, oil, and other industrial processes. In October 2018 an interim action removed two 300-gallon underground heating oil tanks and associated piping, along with additional impacted soil, but significant contamination remains and the site is currently awaiting full remediation. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address3408 Woodland Park Ave N 3415 3425 Stone Way N & 1109 N 35th St, Seattle, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1940
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsCarcinogenic PAHs (cPAHs), naphthalene, and petroleum hydrocarbons in soil and groundwater, attributed to historical industrial fill, tool manufacturing, fuels operations, and underground storage tanks
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #15091

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 documented at this property — cPAHs, naphthalene, and petroleum hydrocarbons from decades of tool manufacturing, fuels operations, and gasoline dispensing — originated from activities that began in the 1930s and 1940s, well before 1986, when occurrence-based Commercial General Liability policies still carried no effective pollution exclusion. The 2018 interim action addressed only a portion of the problem; the full scope of investigation, cleanup design, and remediation of multi-parcel soil and groundwater impacts lies ahead. That pending cleanup is precisely the kind of forward-looking expenditure that historical carriers who issued CGL policies during the decades of pre-1986 industrial activity at this site 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.