Dry Cleaner cleanup site — Restorical Research
Clean M Rite
3310 3rd Ave W, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a dry cleaning facility going back to 1951. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property operated as the Clean M Rite dry cleaning facility from 1951 until 2006, with PCE-based dry cleaning processes generating contamination that has migrated through soil to at least 40 feet depth and into groundwater. Remediation has been ongoing since 2006 under the Voluntary Cleanup Program, including an air sparging and soil vapor extraction system that removed 883 pounds of PCE between 2016 and 2022, Enhanced Reductive Dechlorination injections begun in 2022, and a quarterly groundwater monitoring program established in 2013. Cleanup work is ongoing. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Dry Cleaner
Address3310 3rd Ave W, Seattle, King County
Historical UseDry Cleaner
Est. Operating Since1951
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsTetrachloroethylene (PCE), trichloroethylene (TCE), cis-1,2-DCE, vinyl chloride, benzene, and methylene chloride detected in soil, groundwater, and soil vapor
Media ImpactedSoil, Groundwater, Air
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #1262

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.

Dry cleaning operations at this address began in 1951, opening a policy window that stretches more than three decades before 1986 — each year representing CGL coverage potentially in force when the underlying PCE releases first occurred. The contamination documented here includes PCE, TCE, vinyl chloride, benzene, and methylene chloride, the kind of slow subsurface migration that accrues liability across multiple successive policy periods. The remediation expenditures accumulated since 2006, and the ongoing treatment costs going forward, could plausibly be funded by historical carriers whose policies covered operations at this site during that extended pre-1986 window.

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.