The facility was known to use chromated copper arsenate (CCA) to treat fence lumber and mine lumber. Arsenic contamination has been determined as the main contaminant of concern, and an Action Memorandum has been approved for the removal of arsenic contaminated soils, sediments and residual CCA product in the pressure vessels and tanks on site.
Hazardous Soil trans and disposal has begun this week (7-31-08). An estimated 130 trailer trucks will be needed to transport the haz soils to a Subtitle C facility in Michigan. Approximately 12-15 trucks per day are scheduled, and this portion of the removal should take 12-17 days.
Data from the concrete debris, metal rail debris, roll offs, PPE, and wood debris has been received, and this data was attached to a request for bid for trans and disposal. The RFB is expected to be awarded mid-next week, and the T&D of this material will also be scheduled to occur during the haz soil T&D activities.
Wastewater samples have been completed, and sent to the lab for analysis. The wastewater will be the last bulk product to be disposed of at the site.
Restoration activities will continue as the haz soils are loaded from the stockpiled areas where they are awaiting T&D.
Hazardous materials will continue to be removed from the site.
Tank 05, the last remaining Tank to be cleaned of CCA residual product, is currently being cleaned.
Upon completion of cleanup operations inside the treatment facility, the floors of the facility will be pressure washed to remove any residual CCA waste from past operation activities. The wash water will be collected and stored for disposal.
The T&D contract for all other hazardous materials other than the soil, which has already been awarded and in the process of disposal, will be awarded, and the T&D process for these materials will be scheduled. Wastewater disposal bids and awarding for T&D will also occur in the near future.
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