Bulk Plant cleanup site — Restorical Research
UNOCAL Bulk Plant 0836
915 Edith Ave, Walla Walla, Walla Walla County
Restorical Research
Preliminary Site-Specific Analysis

This property has a documented history as a bulk fuel distribution terminal going back to 1964. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup.

This property operated as UNOCAL Bulk Plant 0836, a petroleum distribution facility with 12 documented underground storage tanks. Official state UST registration records show the earliest tank installed in 1964, with nine additional tanks installed in 1976 and two more in 1985. Contamination has been confirmed above cleanup levels in both soil and groundwater, including petroleum hydrocarbons — benzene, toluene, ethylbenzene, xylenes, gasoline, diesel, and oil — as well as halogenated solvents. The site is enrolled in Washington's Voluntary Cleanup Program and is awaiting cleanup. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.

Former Use
Former Bulk Plant
Address915 Edith Ave, Walla Walla, Walla Walla County
Historical UseBulk Plant
Est. Operating Since1964
StatusAwaiting Cleanup
Contamination & Investigation
Site Assessment Summary
ContaminantsPetroleum hydrocarbons (benzene, toluene, ethylbenzene, xylenes, gasoline, diesel, oil) and halogenated solvents detected in soil and groundwater
Media ImpactedSoil, Groundwater
Regulatory ProgramMTCA — Voluntary Cleanup Program
Ecology Site #48

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.

Petroleum distribution operations at this bulk plant began no later than 1964, more than two decades before occurrence-based CGL policies gave way to claims-made forms with pollution exclusions. The contamination confirmed in soil and groundwater — BTEX compounds, fuel products, and halogenated solvents — is the product of storage and handling operations conducted under those pre-1986 policies. The cleanup costs this property now faces could plausibly be funded by the historical carriers whose policies were in effect during the decades when petroleum was stored and distributed from this facility.

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.