Mr. Gratson is a chemist with experience in the environmental and energy fields as well as the U.S. space program. His interests include quality assurance in project planning and implementation, analytical method development, utilization of innovative remediation technology as well as chemical and environmental science education. He has over 20 years of experience in basic and applied analytical chemistry with the U. S. EPA, the Department of Energy, NASA, and industry. David currently provides his expertise in the development of quality assurance and sampling plans, performs quality audits of field and laboratory operations as well as management plans, and actively follows the development of new analytical methods and remediation technology.