Environmental Restoration

The Kaiser-Hill Company, LLC (K-H) conducted an investigation beginning in October 2000 and completed in March 2001 to characterize the potential Under Building Contamination (UBC) associated with Buildings 123 and 886 at the Rocky Flats Environmental Technology Site (RFETS) (Figure 1-1). This investigation was conducted by K-H Environmental Restoration (ER) in accordance with the Sampling and Analysis Plan for the Characterization of Under Building Contamination of UBC 123 and Building 886, Implementing Horizontal Directional Drilling and Environmental-Measurement-While-Drilling (SAP), (RMRS 2000).

RFETS has 31 buildings with suspected or verified UBC that is the result of suspected or documented spills or leaks from building processes, Original Process Waste Lines (OPWL), New Process Waste Lines (NPWL), or operations adjacent to the buildings. Because of the compressed schedule required to reach closure, UBC characterization must take place concurrently with building deactivation, or decontamination where deactivation is not required, and cannot disrupt building activities. Therefore, methods to characterize UBC sites with minimal impact to buildings must be developed.

Building 771 UBC Study -- Concrete Core removed revealing gravel

16 of 17 locations have been sampled at the Under Building Contamination study at Building 771 and a preliminary report will be issued soon. Soils have been collected at each location and groundwater has been sampled at the 4 locations where encountered. More information will be included next month.

The Industrial Area Sampling Analysis Plan is completed and posted on EDDIE.