Public Works cleanup site — Restorical Research
WA DOC MCC Steam Plant Diesel Spill
16700 177th Ave SE, Monroe, Snohomish County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility going back to 1910. Historical insurance policies issued during operations at this property and through 1986 could fund a cleanup — and recover costs already spent.

The Monroe Correctional Complex (MCC) is an active Washington State Department of Corrections facility whose Steam Plant — originally constructed in 1910 and extended in 1983 — provides power to the complex. A diesel spill from a day tank associated with a standby generator at the Steam Plant was discovered in 2013. Cleanup conducted through 2016 included excavation and disposal of 390 tons of petroleum-contaminated soil and 300 cubic yards of uncontaminated soil, replacement of a footing drain and stormwater line, operation of a stormwater treatment system from February 2013 through February 2016, and installation of oil-water separators. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Address16700 177th Ave SE, Monroe, Snohomish County
Historical UsePublic Works
Est. Operating Since1910
StatusCleanup Started
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (diesel) detected in soil
Media ImpactedSoil, Groundwater, Surface Water
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #13234

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 diesel release here originated from a standby generator day tank at a Steam Plant built in 1910 — infrastructure that operated continuously for more than seven decades before 1986, when occurrence-based CGL policies were still the industry standard and pollution exclusions were not yet effective in Washington. Carriers who issued policies covering this government facility during that long pre-1986 operational window may bear liability for the contamination that resulted from those same facility operations. The documented remediation costs — soil excavation, stormwater infrastructure replacement, a three-year treatment system, and oil-water separator installation — represent expenditures potentially attributable to those historical policies.

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.