NAC Philotechnics, Ltd., is a full-scope radiological services company co-located in Oak Ridge, Tennessee and San Diego. At the very core of our philosophy is our commitment to being the most responsive, broad-spectrum radiological services provider in the nation – dedicated to advising you on the most appropriate method to accomplish your objectives. With the nation's premier group of waste management professionals, we have helped shape today's waste management industry and will apply our expertise to meet your needs.