This is a justification announcement for a contract that has already been awarded on a sole-source basis, not a new competitive opportunity. The contract is for providing on-site diagnostic and nuclear medical physics services at the VA Long Beach Healthcare System. The work will primarily be performed at 5901 E 7th St. in Long Beach, CA, with travel required to nearby outpatient clinics within a 30-mile radius. The contractor must furnish all labor and materials, with all work directed by a qualified medical physicist meeting specific certification and licensing requirements. Personnel conducting equipment testing must be directly employed by the contracting company and approved by the facility's Radiation Safety Officer.