This property has a documented history as a farm and agricultural operation predating 1986. Historical insurance policies issued during those prior operations and through 1986 could fund a cleanup — and recover costs already spent.
Western Farm Service operated an agricultural supply and services facility at this Spokane County location, with site infrastructure including silos, a chemical warehouse, and applicator parking supporting herbicide and pesticide distribution and application to surrounding wheat fields. Detected contaminants include ammonia, nitrate/nitrite, chlorinated herbicides, and carbamate pesticides — among them dinoseb, a herbicide subject to EPA emergency suspension in 1986 and formally banned by 1991, whose presence in groundwater indicates releases predating that regulatory action. Annual groundwater monitoring through Ecology's Toxics Cleanup Program has tracked decreasing or steady contaminant concentrations since at least 2002, with monitoring records extending back to 1994. That history could support an insurance cost recovery claim against carriers who issued insurance policies 40+ years ago.
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 dinoseb contamination at this site traces directly to agricultural chemical operations conducted before the EPA's 1986 emergency suspension of that herbicide — placing the causative releases within the era when occurrence-based CGL policies were standard and their pollution exclusions had not yet been tightened. Carriers who issued those policies to Western Farm Service during its dinoseb-era operations may be obligated to fund both the ongoing groundwater monitoring program and any active remediation the site ultimately requires. The range of contaminants detected — spanning multiple herbicide and pesticide classes — reflects the scale of chemical handling at the facility and the corresponding breadth of potential insurance recovery.
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
Ready to learn more?
Contact UsThis analysis is preliminary and based on publicly available records. Restorical Research is not a law firm and does not provide legal advice.


