College Park Landfill Pilot Study

BMT conducted a Pilot Study of the College Park Landfill (CPLF), a 30-acre site operated as a municipal landfill from 1954 through 1978.


We conducted a Pilot Study of the College Park Landfill (CPLF), a 30-acre site operated as a municipal landfill from 1954 through 1978. Following closure, a cover was applied, but it was not closed in accordance with regulatory requirements. As landfills are known for their ability to mobilize hazardous substances into surrounding media, the CPLF was added to the U.S. Superfund (CERCLA) program for further evaluation.


We developed the Remedial Investigation Work Plan and Sampling Plan. Following investigations that included a soil gas survey, hydrogeological assessment, wetland delineation, and Site Screening Process risk assessment, we performed a pilot study to explore an alternative to the traditional landfill cover for closure. Alternative capping systems, such as evapotranspiration (ET) or vegetative caps have reduced costs, while meeting applicable regulatory requirements. In addition, carbon sequestration using vegetation and composted organic materials sequesters carbon from landfill gases, such as carbon dioxide and methane.


To address regulatory obligations, BMT investigated innovative alternatives to conventional closure methods. To combine the beneficial effects of both ET and carbon sequestration cover designs, BMT installed a pilot vegetative bioreactive landfill cap (VBLC) to evaluate these technologies which were approved by EPA Region III and state regulators.

Related projects

Beaverdam Road Landfill Permeable Reactive Barrier

The Beaverdam Road Landfill (BDRLF) site is another site BMT characterized for the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) at the Beltsville Agricultural Research Center (BARC) in Maryland. BMT led a Remedial Investigation/Feasibility Study that included site investigation, development of a Site Screening Process, ecological risk assessment, human health risk assessment, and feasibility study to evaluate remedial options.

Brisbane River Catchment Flood Study – Comprehensive Hydraulic Assessment

The Brisbane River Catchment Flood Study is the most detailed and comprehensive flood study ever undertaken in Australia. The hydraulic models that were developed underwent rigorous calibration. A sophisticated Monte Carlo approach was used to hydraulically model 11,340 flooding scenarios. The result was a robust and defendable set of design events. The study was fully peer reviewed by a panel of independent experts.

Byron Shire Coastal Zone Hazard Definition Study

The coastal zone of Byron Shire has a history of erosion and inundation related to ocean storm tides and wave attack.

Friston Surface Water Flood Study

Surface water flood modelling study to determine baseline flood risk through a rural village which is located downstream of a proposed Power Company development site. The project determined the existing flood risk to inform the planning and DCO submission from the power company for a new windfarm substation connection for offshore turbines to the National Grid.