Project Description

An upstream fuel fabricating facility contaminated the sewage treatment process at this site. The Department contracted ROS under an Interim Remedial Response Services Contract (IRRSC) to complete specified site remediation activities. ROS mobilized a crew to the site, established work zones including a Radiological Control Area with a single portal access, equipment decontamination pad and truck tarping station and truck loading area. A temporary road was constructed to provide tractor trailer access to the loading area. Background dose rates were determined for the general site location and the trucks used for shipping.

The one acre lagoon contained an estimated 13,600 CY of ash waste. ROS used a low ground pressure dozer to move and stockpile the lagoon ash at the loading area. As the volume of ash remaining in the lagoon decreased the LGP dozer was replaced with and tracked excavator. The excavation commenced in a systematic fashion beginning at the south end of the lagoon and proceeding north toward the loading/stockpile area. The excavator bucket was equipped with a straight cutting edge to minimize the potential for mixing waste material with the underlying clay. The stockpiled material was loaded into the poly lined trailer. The load moved to the traping area where the ash was covered with the liner material and seal with adhesive and the trucks were scanned. Each of the 570 trailers received a surface contamination scan, removable activity samples and dose rate measurements after loading and prior to leaving the site.