Authorizes USA for the decontamination and disposal of buildings, pipe, land, and equipment contaminated with radioactive materials. USA is equipped to handle something as small as a single radioactive exit sign or smoke detector to as complex as a full MARSSIM facility closure. USA has the right mixture of experience, expertise, licensing and equipment to provide full service radioactive materials management. Our RCRA expertise also allows us to meet your mixed waste needs.

Stephen Prewett-Ph.D. Nuclear Science & Engineering:
Dr. Prewett holds a Ph.D. in Nuclear Science & Engineering from Virginia Polytechnic Institute. He offers more than thirty years experience managing Nuclear, RCRA, and TSCA projects. Several projects under the direction of Dr. Prewett have been recognized for their excellence by both regulatory agencies and industry peer groups. A safety program managed by Dr. Prewett still holds the National Safety Council record for performance in its SIC Code. Dr. Prewett is USA's designated RSO and is responsible for maintaining USA's radioactive materials license. As a Senior Project Manager for USA, he is also responsible for providing radiation protection, decontamination, and decommissioning at NRC and state licensed facilities; preparation of remediation work plans; and providing risk evaluation and assessment on radioactive projects.

Raymond Holmes-Ph.D. Health Physics, CAHP, CPHP, PE:
Dr. Holmes holds a Ph.D. in Health Physics and a Certificate to Practice Health Physics-Institute of Physics and Engineering in Medicine and Biology. Dr. Holmes is a hands-on engineer and scientist with more that thirty years of international experience in the determination of health risks and the environmental impact of chemical and nuclear pollution. He provides support to Dr. Prewett on the resolution of scientific and technical issues for projects performed by USA.

Leslie W. Cole, CHP:
Mr. Cole has more than 37 years of experience in applied health physics and environmental health physics with specific emphasis in environmental sampling, analysis and data evaluation, health physics and safety program evaluations, radiological and mixed waste assessment and uranium health physics. He is the past Director of Environmental Health and Safety at a uranium metal fabrication facility and is a member of the NCRP Task group responsible for developing national recommendations for handling uranium. He served as a Radiation Safety Officer for a major decontamination facility that processes material from nuclear power plants. He has also served as a Health Physics Team Leader in an Environmental Radiological Assessment Program.

David Bernhardt, CHP:
Mr. Bernhardt has over 38 years experience in the field of radiation health and safety. He has served as a Project Manager and Principal Investigator for environmental pathways modeling and risk assessments of sites contaminated with radioactive and chemical substances, decommissioning and decontamination (D&D), and characterization of contaminated sites. D&D and site characterizations have included preparing license documents, D&D reports, radiation surveys, sampling, and preparing shipping documentation for transportation and disposal of mixed waste. Mr. Bernhardt has also prepared bioassay programs and dose assessments for several clients and has served as Radiation Safety Officer on numerous projects. He has also prepared radioactive materials licenses and established radioactive material guidelines at several sites, as well as serving as an expert witness in support of remediation projects.

Mike Nalepa-Managing Director Radiological Services:
Mike Nalepa holds a B.B.A. in Economics from Sam Houston State University and as a Senior Partner at USA is responsible for developing our business in Radioactive Material Management. He holds certifications in radiation surveying, radiation instrumentation calibration, biological effects and exposure minimization and radiation safety. Mr. Nalepa has managed low level and mixed radioactive remediation sites as well as Naturally Occurring Radioactive Material (NORM) projects in the steel , wood products, and oil field industry. He brings over twenty years of experience in the operation and handling of special waste and provides unparalleled expertise on tank cleaning and waste disposal projects deveoping our business in Radioactive Material Management for commercial clients.

UNION CARBIDE CORPORATION—NORM SURVEY
USA performed a survey for technologically enhanced naturally occurring radioactive material (NORM) at the DOW/Union Carbide propylene compressor station in Texas City. Radioactive isotopes of concern were the radon-222 daughter products lead-210 and polonium-210. The scope of work included collecting background gamma exposure rates and surveying the compressors, equipment, flow lines, piping runs, and valves located inside the building. Direct surveys for alpha and beta contamination were performed using a Ludlum Model 2 survey meter coupled with a Ludlum Model 44-9 Geiger Mueller pancake type probe.

EL PASO CORPORATION—PATTERSON FIELD, LA.
USA completed access improvements, removal of a partially submerged barge, dismantling and removal of ASTs, NORM surveying, removal of piping and dock pilings, and grading of the landowners property. The project was performed in extreme remote locations with particular emphasis on safety and landowner satisfaction. The project was completed without incident, ahead of schedule and under budget. At the completion of the project the landowner wrote a letter to El Paso commending USA on the level of professionalism exhibited throughout all phases of the project.

EXXON—BEAUMONT
USA was contracted to remove lead and Po-210 from pumps, piping and process equipment at the Exxon's Beaumont facility. USA removed the equipment to a portable decontamination area constructed on-site. Equipment was then initially decontaminated with an acid solution and steam to remove residual hydrocarbons. Equipment was then placed into water tight roll-off containers and submerged in water. The water was heated to between 140-160° F and a 3-4% chealation chemical was added to the tank. The solution was circulated for approximately 36 hours to drop the level of activity to acceptable levels for unrestricted use.

AEROJET ORDINANCE, TN
Dr. Stephen Prewett managed the closure of a depleted uranium and thorium pond. The project had two major phases which included the removal and disposal of water and sludge and the consolidation and encapsulation of contaminated soils. During the project 2,200,000 gallons of water was treated and 17,000 cubic feet of sludge was treated for off-site disposal. Approximately 2,000,000 cubic feet of impacted soil was encapsulated. This was the first large scale closure of this type and pioneered many health physics and operational procedures.

CHAPARRAL STEEL
USA provided remediation and decontamination services which included cleaning 54 above ground tanks in a steel manufacturing facility. The scope included site security, radiological surveys, sampling (gamma spectroscopy analysis), establishing personnel decontamination and monitoring stations, removal of decontaminated materials, decontamination of vessels and tanks, confined space entry, pressure washing and dismantling of tanks, waste segregation and characterization, constructing temporary storage areas, transportation, loading, and disposal of Cs-137 impacted waste.

USA’s technical staff have successfully handled multiple curies of isotopes including Ra-226, Sr-90, Cs-137 on a variety of projects. Our management has a record of success in both agreement and NRC licensed projects . We can provide DOD/DOE certified brokers and manifesting services for a variety of waste streams. The senior technical staff at USA can provide specialized knowledge on such topics as risk based standards and health physics assessments.