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Kunia Frequently Asked Questions

What happened at Field Station Kunia?
In 1975, the Del Monte pineapple plantation on O`ahu made a fateful change in its management of soil fumigants. Until that time, the plantation had purchased the fumigants — used to control root nematodes — in metal drums, typically containing 50 or 55 gallons. In 1975, though, it began purchasing the primary fumigant it used, ethylene dibromide (EDB), in bulk shipments, which were stored in a 25,000-gallon tank hard by a drinking-water well at Kunia. Two years later, on April 7, 1977, the danger inherent in the new approach burst into full view. The flexible hose on the bulk container of EDB broke when Del Monte began to empty the EDB into its holding tank. According to a letter dated April 12, 1977, from the plantation superintendent, N.E. Blomberg, to the Hawai`i sales representative for Dow Chemical Co., manufacturer of EDB, the break was not noticed immediately: “Since this is a closed system of transfer and takes approximately one hour to empty no one stands by during this time. About five minutes after we started the emptying process the break was noted by our shop personnel who immediately shut the valve.” Blomberg calculated that, of the 2,648 gallons of EDB in the full container, 191 had been transferred into Del Monte’s tank and 1,962 remained in the bulk shipping container when the leak was discovered. Unaccounted for were 495 gallons, which had either soaked into the ground or evaporated, according to Blomberg. The area of the spill “is near our domestic water well,” Blomberg informed Dow. The well, only about 50 feet away from the spill site, supplied drinking water to more than 600 residents at Kunia Camp. “From the way the well is constructed we do not believe any contamination took place,” he said — while adding that he believed Dow had taken water samples for analysis. Blomberg’s letter concludes: “Only one employee got the spill on his hands and after four days still reports no problem. He was the shop supervisor that closed the valve. He had worked with EDB before and knew how to wash with copious amount of water. “It is my understanding that Dow will replace all the lost fumigant.”

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