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Preliminary Notice of Violation, CH2M Hill Hanford Group, Inc - EA-2005-01

March 10, 2005

Issued to CH2M Hill Hanford Group, Inc., related to Radiological and Operational Events at the Hanford Tank Farms

This letter refers to the recent investigation by the Department of Energy’s (DOE) Office of Price-Anderson Enforcement (OE) at the Hanford Tank Farms of four radiological and operational events occurring during 2003 and 2004. The events included (1) the June 2003 multiple personnel contamination event at the [ ]; (2) the November 2003 Technical Safety Requirement violation during a cross-site waste transfer; (3) the November 2003 valve positioning error during S-112 waste retrieval operations; and (4) the July 2004 extremity exposure during hermocouple removal activities.