united states services group (ussg) is comprised of a closely knit group of professional environmental and industrial services contracting companies capable of performing a wide array of specialized industrial cleaning services. ussg is a full-service environmental and industrial services contracting firm specializing in tank and vessel cleaning, in-plant industrial services, hazardous and non-hazardous material emergency response, land and water oil spill clean-up, industrial fire suppression, safety training, contaminated site remediation and technical demolition.