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On August 10, 2006, The Ensign Bickford Company (EBCo) completed treating explosive contaminated soil at the old Trojan plant near the communities of Mapleton and Spanish Fork in Utah County. The treatment process involved feeding contaminated soil into a mobile incinerator. The unit was approved for operation in early 2006 and at the end of operations in August, nearly 88,000 tons of soil had been treated. The process included a final testing of the soil to ensure treatment goals have been met. EBCo is currently dismantling the thermal treatment unit.
The Ensign Bickford Company (EBCo) manufactured explosives at the facility from the 1940s until February, 2006 when the plant was closed. Past operations have resulted in soil and ground water contamination. In 1999, EBCo and the Division agreed on a plan to investigate the contamination at the facility. Forty-four areas on the property were identified for investigation. The nature and extent of the contamination at each location was defined through comprehensive soil and groundwater sampling.
In March 2006, EBCo submitted an Interim Measures Work Plan (cleanup plan) to the Division. The Division conducted a review of the plan to ensure it was protective of public health and the environment. Conditions for operating and closing the thermal treatment unit were outlined in a draft Corrective Action Order. The public was invited to comment on the two documents and, after considering the comments received, the Division approved a final cleanup plan and the Order was signed and became effective on October 12, 2005.
Starting in December 2005, various components of the mobile incinerator were extensively tested. This is commonly referred to as shakedown. During the shakedown period, two important tests were performed:
EBCo contractors began excavating contaminated soil from different locations on the site in preparation for thermal treatment in November 2005. At the end of operation of the thermal treatment unit in early August 2006, nearly 90,000 tons of soil had been excavated.
Now that the thermal treatment effort has been completed, EBCo will be starting a phase of excavation and off-site shipment of soil that contains low levels of explosive contamination. EBCo will utilize the concrete pad of the former thermal treatment unit to stage the soil prior to loading into trucks. Off-site shipment of the soil is anticipated to take several weeks. This page will be updated periodically with the quantities of soil removed from the site.
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For more information, email Brad Maulding
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