On 2/13/08
RHB was notified of a tractor trailer from the Turlock transfer station (municipal trash) that set off the radiation alarms at Covanta Energy. The truck was returned to the Turlock transfer station and arrangements were made to survey the vehicle to determine the reason for the alarm. On 2/14/08 an
RHB inspector visited the transfer station to survey the truck to determine the radionuclide and quantity. Readings on the truck were stated to be 5 mr/hr at surface.
Cesium 137 was identified. The
cesium source measured 260 mr/hr using an Ion Chamber at about a foot. This would be approximately 85 mCi. The source was located and placed in properly shielded
lead pig. The source will be stored at Thomas Gray and Associates and will be examined for serial numbers and to accurately determine the activity at a later date. The source appeared rusty and was very small and was similar to a
brachytherapy source. Following the examination additional information will be provided.