Industrial & Manufacturing cleanup site — Restorical Research
Lawson Hills MPD
Lawson St & Botts Dr, Black Diamond, King County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a industrial and manufacturing facility going back to 1895. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.

Coal mining operations on this property span nearly a century, beginning with the Lawson Mine in 1895 — which extracted over 1.2 million tons of coal before closing in 1913 — and continuing through the Johnson Coal Mine (1936–1938), Maks Mine (1950s–1960s), and McKay Section 12 Surface Coal Mine (1982–1986). The property has also supported farming, forestry, and residential use since the 1880s and early 1900s, respectively. Site investigations have confirmed lead in groundwater above MTCA Method B cleanup levels, and arsenic, iron, manganese, and zinc in surface water and seeps exceeding cleanup standards. Remedial work is underway through the Voluntary Cleanup Program. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Industrial & Manufacturing
AddressLawson St & Botts Dr, Black Diamond, King County
Historical UseIndustrial & Manufacturing
Est. Operating Since1895
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsLead confirmed above cleanup levels in groundwater; arsenic, iron, manganese, and zinc in surface water and seeps
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #17292

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.

Coal mining at this Black Diamond property began in 1895 and continued through multiple operators for over nine decades, placing the vast majority of the site's industrial history squarely within the pre-1986 occurrence-based CGL era. Policies issued to mining operators during those decades carried no effective pollution exclusion under Washington law and remain enforceable today. The metals contamination now confirmed in groundwater and surface water — lead, arsenic, iron, manganese — traces to that long mining legacy, and the remediation costs already being incurred and still ahead could be recoverable from historical carriers whose policies were in force during those operations.

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.