A radiological survey was performed in four SSFL locations which were used in the 1960s to support the Systems for Nuclear Auxiliary Power (SNAP) program. These areas are located in the government-optioned portion of Area IV and include two facilities and two surrounding areas: 1) Building T019; 2) Building T013; 3) an outdoor area northwest of and adjacent to the SNAP complex (Buildings T059, T019, TO13 and T012); and 4) a storage area west of Buildings T626 and T038.