Charles P Johnson & Associates

Located in Gaithersburg, Md., and also known as SCG, The Scientific Consulting Group provides professional consulting services to government and private clients. It offers data collection, analysis and strategic planning services. The company uses various methods and approaches to collect primary and secondary data. It assists clients in designing survey instruments, tracking responses and conducting follow-ups. The Scientific Consulting Group offers a range of publication preparation services, including technical writing, editing, proofreading, production, and layout and graphic design. It employs a staff of scientists and technicians who conduct research and write scientific publications. The company s staff prepares a variety of reports, books, manuscripts, journal articles, monograms and research papers.

Tetra Tech is a globally recognized leader in consulting, engineering, program management, construction management, and technical services. With a strong presence worldwide, Tetra Tech offers comprehensive solutions to a diverse range of clients across various industries. Generated from their website's infomation

Located in Rockville, Md., Environmental Management Services Inc. provides services for managing waste and hazardous materials. It offers a range of services, such as waste management, disposal, chemical/equipment moving, emergency spill response and clean up field services, ecological, health and safety. The company serves as a provider of chemical moving services to large as well as small facilities. Environmental Management Services Inc. maintains a fleet of trucks to move the chemicals, equipment and lab furniture safely.