Washington’s Department of Ecology cited Nippon Dynawave Packaging for 35 environmental violations on August 26, three months after a white-liquor storage tank at the company’s Longview pulp and paper mill failed and killed eleven employees.
Buried in the release is a sentence that should stop anyone who inspects, repairs or replaces industrial vessels: Ecology does not regulate the structural integrity of the tank that failed.
What the citations cover
The May 26 failure released 900,000 gallons of highly caustic white liquor. Some of it reached storm drains and the sanitary wastewater treatment system, with a portion bypassing treatment entirely. The 35 violations are all environmental, tied to that release.
Ecology can assess up to $10,000 per violation per day, and roughly a quarter of the cited violations extended across multiple days. Nippon Dynawave has 30 days to respond, and Ecology has up to two years to act. Separate state and federal investigations continue.
The jurisdictional gap
The mill held air permits, water permits and waste permits. Every one of those was somebody’s job to enforce. The condition of the steel holding 900,000 gallons of caustic was not.
That gap isn’t unique to Washington or to pulp mills. Industrial storage vessels in the U.S. sit under a patchwork: API 653 governs inspection of atmospheric aboveground storage tanks by industry consensus, EPA’s SPCC rule reaches oil storage, and OSHA’s process safety management standard covers a specific list of highly hazardous chemicals. White liquor, a sodium hydroxide and sodium sulfide solution, isn’t on that list.
So the inspection interval, the corrosion allowance and the decision about when a tank comes out of service are contractual and internal, not regulatory.
The detail that will matter
OPB reported on August 25 that records show the failed tank was being worked on and had already been scheduled for replacement. If that holds up, the investigation moves from whether the company knew to what it did with the time between knowing and replacing.
For contractors doing tank inspection, repair, coating or replacement work, the practical exposure is clear enough. When the regulator has no jurisdiction over the vessel, the engineering judgment about whether a tank can stay in service another season sits with whoever signed the inspection report.
Tank-heavy process construction is common well outside pulp and paper. New Glarus Brewing’s $55 million Hilltop expansion in Wisconsin is scheduled around vessel and piping commissioning rather than building completion, which is the ordinary case in process work.