Dry Cleaner cleanup site — Restorical Research
PCE Plume 12th Ave & E Alder St
12th Ave & E Alder St, Seattle, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a dry cleaning facility going back to 1935. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This site encompasses a tetrachloroethylene (PCE) groundwater plume beneath the 12th Avenue and East Alder Street area in Seattle, traced to multiple historical dry cleaning operations that operated in the surrounding blocks from as early as the mid-1930s. Phase II Environmental Site Assessment work confirmed an extensive PCE plume originating from offsite dry cleaner sources, with PCE concentrations in groundwater reaching 8,200 micrograms per liter — well above state cleanup levels. The site is enrolled in the Voluntary Cleanup Program and is awaiting remediation; no active cleanup work has yet commenced. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Dry Cleaner
Address12th Ave & E Alder St, Seattle, King County
Historical UseDry Cleaner
Est. Operating Since1935
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsTetrachloroethylene (PCE) and halogenated solvents detected in groundwater at concentrations exceeding cleanup levels
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #12668

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 dry cleaning operations responsible for this PCE plume date to the mid-1930s — roughly five decades before occurrence-based Commercial General Liability policies gave way to claims-made forms with absolute pollution exclusions. CGL policies issued to those dry cleaning operators during their pre-1986 operational years were written without effective pollution exclusions and may still respond to the contamination liabilities now documented at this site. With cleanup costs still ahead — investigation, remedial design, and remediation of a confirmed solvent plume — historical carriers from that era represent a plausible funding source for the property's environmental obligations.

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.