Maryland Department of the Environment

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Maryland State Remediation Site Information

Information provided below identifies State Remediation Sites where the Land Restoration Program is expending State funds to correct issues associated with environmental contamination.​ ​

State Remediation Sites

Anacostia River PCB Track-Down Studies​

Chemical Metals Industries Site (MD-082)

Click here for more information on tetrachloroethylene (PCE) and trichloroethylene (TCE).  Factsheet about vapor intrusion. 

Dark Head Cove

Frog Mortar Creek

Former Alcoa Eastalco Works

Frederick Data Center

The Maryland Department of the Environment has assessed the results of sampling of Tuscarora Creek, creek sediments and source water that was discharged from the site to the creek and has found no adverse impacts to public health and the environment.
Based on the analytical results within the creek and creek sediments adverse impacts to public health and the environment were not identified and creek water and sediments did not demonstrate adverse impacts from the illicit discharge.  Water samples originating from the source area of the illicit discharge also did not demonstrate impacts from previous Alcoa industrial activities.  The groundwater results from the source area did not identify contaminants of concern that would be anticipated to impact surface water quality.  Metals indicative of native soils and local geologic conditions were identified in the environmental media tested and do not represent potential contaminant sources of concern.  At this time warning signs from the creek can be removed. 

Background: On May 23, 2023, MDE's Land Restoration Program was made aware of potential illicit water discharges to Tuscarora Creek, a tributary of the Potomac River, in Frederick County.  The party responsible for the discharge, Quantum Maryland LLC, which is redeveloping the Former Alcoa Eastalco Works at 5601 Manor Road, Frederick, was instructed by MDE's Water and Science Administration on May 22, 2023, to cease all discharges and site development activities.  Employing an abundance of caution on May 26, 2023, Quantum Maryland LLC was instructed to post warning signs along the creek and to sample the creek, sediments and source water that was discharged to the creek.  MDE has received and assessed the results of the sampling conducted on June 6 and 7, 2023.  These results, and additional information on the site, can be found below: ​​
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Former Weber Farms

Glenn Heights

KOP-FLEX

Manor Road Well Contamination Site

Martin State Airport/Middle River Complex

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Montgomery Brothers Dumpsite

Port Covington

Stansbury Park

Takoma Park Shopping Center Off-Site Investigation

The Agency for Toxic Substances and Disease Registry maintains fact sheets on Tetrachloroethylene (PCE) and Trichloroethylene (TCE).  For more information please access the above links.

Controlled Hazardous Substance Notification Regulations
Please see "LRP News and Resources" for more recent information. 

Contact Information

For more information please contact the Controlled Hazardous Substance Enforcement Division at 410-537-3493.​

Maryland Department of the Environment
1800 Washington Blvd
Baltimore, MD 21230