Established in 1981, Hallam-ICS, earlier known as Hallam Associates, is an engineering and control system contracting company. It provides toxic gas monitoring and control services. The company serves the health care, corporate technology, microelectronics, biotechnology and pharmaceuticals industries. It offers instrument specification, procurement, installation and calibration services. Hallam-ICS also provides industrial waste treatment, design and functional testing services. Its clients include Vermont Student Assistance Corporation, Northrop Grumman, Ben & Jerry's Homemade and Georgia Pacific Corporation. The company operates offices in Massachusetts, New York, Vermont, Virginia and North Carolina. It is affiliated with the American Society of Civil Engineers, American Society of Mechanical Engineers and Institute of Electrical & Electronics Engineers. Hallam-ICS is a member of the U.S. Green Building Council.