EIS Holdings, LLC is an environmental and infrastructure services platform consisting of 1 Priority Environmental Services, Earth Services & Abatement, Snyder Environmental, Simpson Environmental, Potomac Abatement and AET Group. This combination of companies creates the No. 1 abatement firm by revenue in the U.S., according to Engineering News-Record’s top abatement contractors list. EIS Holdings (www.eisholdings.com) is an environmental and infrastructure services platform consisting of 1 Priority Environmental Services, Earth Services & Abatement, Snyder Environmental, Simpson Environmental, Potomac Abatement and AET Group. With 27 offices throughout the country, EIS performs abatement, decontamination, remediation, and other environmental services across the Southern, Midwest, and Rocky Mountain regions of the United States.