Eberhart/United Consultants, Inc. located in Placentia, CA reported to the State of
California at 1000 PDT on 05/17/06 that one of their
CPN MC3 (serial number M390304918)
moisture density gauge was run over at a work site; Fontana Speedway, 9300 Cherry Avenue, CA; at 0830 PDT. When the
gauge was run over the
gauge was in backscatter mode of operation. The casing of the
gauge was destroyed. The area was cordoned off and the
RSO for Eberhart/United Consultants, Inc. was contacted.
CPN Maurer Technical Services came out to the site and took possession of the
gauge and took it back to their facility located in Laguna Hills. Wipe test of the sources are clean and the sources will be leak tested. Maurer Technical Services reported that the shielding for the
Cesium-137 source had been compromised. State of
California representative stated the highest radiation reading from the
gauge at one foot was 18 milliRem per hour. The
gauge contains a 10 milliCurie
Cesium-137 source and a 50 millicurie
Am-241/Be source. The
RSO will be giving retraining to all staff to cover the emergency procedures for this type of incident.