Public Works cleanup site — Restorical Research
Mountlake Terrace City
6204 - 215th Street S.W., Mountlake Terrace, Wa date: 10/21/94 Figure 2, Snohomish County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a public works and maintenance facility going back to 1985. Historical insurance policies issued during those prior operations and through 1986 could recover the cleanup costs already paid.

This property served as the Cities of Mountlake Terrace and Lynnwood's joint Public Works Maintenance Shop and vehicle fueling facility, constructed in 1985 with four underground storage tanks totaling 27,000 gallons for fuel and waste oil. Cleanup under the Standard Cleanup program included excavation and removal of all four USTs and associated piping, along with removal of at least 17.92 tons of contaminated soil from two separate spill locations, including a 1992 hydraulic oil release from a maintenance hoist. Excavated soils were treated or landfilled, tanks were cleaned and scrapped, and all excavations were backfilled with clean material. The site has received a No Further Action determination from Ecology. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Public Works
Address6204 - 215th Street S.W., Mountlake Terrace, Wa date: 10/21/94 Figure 2, Snohomish County
Historical UsePublic Works
Est. Operating Since1985
StatusNo Further Action
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (including leaded gasoline) and hydraulic oil detected in soil at two spill locations
Media ImpactedSoil, Groundwater, Air
Regulatory ProgramMTCA — Standard Cleanup
Ecology Site #7076

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 underground storage tanks at this facility — including one containing leaded gasoline — were installed in 1985, squarely within the window when occurrence-based Commercial General Liability policies carried no effective pollution exclusion in Washington. The petroleum and hydraulic oil releases that triggered cleanup originated from infrastructure put in place during that pre-1986 policy period. Documented remediation expenditures for tank removal, soil excavation, treatment, and site restoration represent costs that historical CGL carriers who covered the municipal operations in 1985 may still be obligated to reimburse.

Restorical's role is to locate viable historical policies, determine whether a successful cost recovery claim is possible, and assist our clients and their legal counsel to obtain insurance coverage for costs already incurred. Restorical's forensic accounting team works to re-establish and document past cleanup expenditures, ensuring the strongest possible basis for recovery.

Recovering Costs from an Older Cleanup

If this site reached No Further Action years ago, the original cleanup expenditures may be difficult to reconstruct. Restorical's forensic accounting team specializes in re-establishing and documenting past cleanup costs — even decades later — to build the strongest possible basis for an insurance recovery claim.

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 — Cost Recovery
When Task 1 confirms viable coverage, Restorical works with your legal counsel to tender the claim and negotiate recovery of costs already incurred. Restorical's forensic accounting team re-establishes and documents past cleanup expenditures, managing the claim process to ensure the insurance companies fulfill their obligation 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.