Industrial & Manufacturing cleanup site — Restorical Research
Clean Earth/Burlington Environmental - Kent
20245 77th Ave S, Kent, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1980. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

This property was developed in 1980 by Crosby and Overton, Inc. as a hazardous waste treatment, storage, and disposal facility, accepting oily wastewater, solvents, caustics, and petroleum products under a RCRA permit. Operations continued under Chemical Processors Inc. (Chempro), which renamed itself Burlington Environmental, Inc. in January 1992. Documented cleanup activities include excavation of 705 cubic yards of contaminated soil, multiple underground storage tank removals, and pipeline replacements. The preferred remedy — geochemical controls combined with Monitored Natural Attenuation — is estimated to cost $2.3 million over 15 to 20 years, with ongoing monitoring and institutional controls required throughout. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
Address20245 77th Ave S, Kent, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1980
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsSolvents, caustics, and petroleum hydrocarbons (oily wastewater) in soil and groundwater across multiple areas of concern
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #12484

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.

Hazardous waste operations at this facility began in 1980, and underground storage tanks were in service well before 1986 — the year occurrence-based Commercial General Liability policies stopped reliably covering pollution claims in Washington. Contamination documented across multiple Areas of Concern and Solid Waste Management Units reflects decades of industrial waste handling that originated during the pre-1986 operational window, not a single recent incident. The $2.3 million remediation program projected to span 15 to 20 years represents a cost trail that historical carriers — whose policies covered the facility during its founding years — 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.