Please click on the following links to read summaries of projects that have been completed by CGS.
 

-	Manufactured Gas Plant - Easton, Maryland The subject Site was originally a privately owned manufactured gas plant (MGP) that employed coal gasification to produce fuel gas for public use between 1860 and 1961. Coal tar, a primary by-product of coal gasification, was found in subsurface soil. Coal tar consists primarily of polycyclic aromatic hydrocarbons (PAHs). CGS was contracted by the Maryland Department of Environment, Environmental Restoration and Redevelopment Program (MDE-ERRP) to provide for remediation and safe disposition of the Site under the State Superfund Program.   For more information on this project click here: Manufactured Gas Plant Remediation – Easton, MD
-	Sauer Dump - Baltimore, Maryland  CGS was contracted by the State Superfund Division of the MDE-ERRP to assist it in remedy implementation at a 2.5-acre illegal dump located on the shore of Back River near the downtown Baltimore Metropolitan Area. Major tasks for which CGS has been/will be directly responsible include a Remedial Investigation/Feasibility Study (RI/FS), Remedial Design (RD), Wetland Permit Application, Preparation of a Bid Specification, Community Outreach, and Remedial Construction Oversight. For more information on this project click here: PCB Remediation –Baltimore, MD
-	USDA Beltsville Agricultural Research Center  Beltsville, Maryland  Releases from polychlorinated biphenyl (PCB) oil-containing electrical transformers and other equipment resulted in broad shallow areas of soil contamination at one of the United States Department of Agriculture’s (USDA) maintenance and storage compounds located in Beltsville, MD. For more information on this project click here: PCB Remediation –Beltsville, MD
-	Future Federal Office Building Site  Washington, D.C.   CGS was retained by Greenhorne & O’Mara, Inc. to assist its US Government client in developing a contaminated parcel of land in a prime downtown Washington, DC location for a federal office building. The Site was contaminated with petroleum from leaking underground storage tanks (USTs). CGS performed a Risk Assessment according to District of Columbia Risk- Based Decision Making (RBDM) policy and USEPA Risk Assessment Guidance for Superfund (RAGS) to evaluate potential risks to human health from subsurface contamination. The Risk Assessment was utilized to establish remedial endpoints and determine whether institutional controls were required for the proposed Site development. For more information on this project click here: Petroleum Remediation –Washington, DC
-	Washington Metropolitan Area Transit Authority  Southeast Bus Garage  -  Washington, D.C. Petroleum releases resulting from underground storage tanks (USTs)at a bus maintenance garage since the 1930s resulted in a groundwater contamination plume that covered two city blocks. CGS installed a subsurface remediation system utilizing 20 recovery wells in the impacted area. CGS successfully completed all of the remediation system construction (including excavation in private and public spaces) while avoiding disruptions to the operational facility. Several hundred feet of underground piping were installed and pressure tested as part of the project. For more information on this project click here: Petroleum Remediation System Installation – Washington, DC
-	Former Manufacturing Facility  Bethesda, Maryland The subject property had formerly been utilized as an industrial manufacturing facility built in the early 1960s. CGS was retained by a perspective purchaser of the property to perform a Phase I Environmental Site Assessment (ESA) to identify any potential environmental concerns associated with the Site. Our Phase I ESA recommended a limited Phase II subsurface screening of both soil and groundwater at the Site as well as abatement of asbestos containing materials (ACM). For more information on this project click here: Voluntary Cleanup Program – Bethesda, MD