Excavation of soils at former Forest Products Laboratory Wood Treatment Laboratory (WTL), performed under a clean-up plan approved by the State of California Department of Toxic Substances Control (see September 20, 2007 new story), was completed on October 4, 2007. Samples will be taken to determine if any additional excavation is needed. If no additional digging is needed, the excavation will be backfilled with clean soil.
Air monitoring and visual observations completed during the work showed that the dust control measures we implemented were fully effective in controlling dust from the excavation site. Air monitoring results, including maps showing the locations of the air monitors, will be available on this website early next week.
On Friday October 5, 2007, approximately 75 cubic yards of soil that was previously excavated during repair of Jay Way will be removed for off-site disposal. The soil was stockpiled for testing by the campus Office of Environment, Health & Safety. Analytical results show that the soil is clean and is not hazardous. We anticipate that six loads will be trucked from the soil stockpile area east of Building 112 to a sanitary landfill.