Hidden Lane Landfill - Sterling, Virginia
Posted by: Groundspeak Premium Member flyingmoose
N 39° 03.225 W 077° 25.554
18S E 290083 N 4325542
Quick Description: Entrance to the off-limits Superfund site is located on the north end of Persimmon Lane.
Location: Virginia, United States
Date Posted: 5/7/2021 7:13:06 AM
Waymark Code: WM147JR
Published By: Groundspeak Premium Member lumbricus
Views: 1

Long Description:

Hidden Lane Landfill was a former dump that leeched into the water table was closed down. The dump had been covered over and now looks like a normal hill at the edge of a neighborhood. However the hill has been poisoning the neighborhoods water table for years. Aside from the "No Trespassing" signs, the only other sign the site is unique is the exhaust pipes that were added. The exhaust pipes are along the ridge and not accessible.

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EPA Website
Background
The Hidden Lane Landfill was a 25-acre privately owned and operated disposal facility north of Virginia Route 7 between the Broad Run Farms and Countryside communities. It is immediately adjacent to the floodplain of the Potomac River. Starting in 1971, the facility accepted a variety of solid wastes including construction and demolition wastes, land clearing wastes and other items such as appliances, tires, paper and cardboard. The county closed down the facility in 1984, pursuant to a local court decision the year before. The Hidden Lane Landfill had been named by county and state health officials as the likely source of the degreasing solvent trichloroethylene (TCE), which was detected in the drinking water wells of some homes in the Broad Run Farms subdivision just west of the landfill in 1989. The Hidden Lane Landfill was added to the Superfund program's National Priorities List in March 2008.

What Has Been Done to Clean Up the Site?
The site is being addressed through state and federal actions.

In 2008, EPA began oversight and maintenance of carbon filtration systems in the Broad Run Farms community and continues to sample the systems quarterly.

In February 2009, EPA installed a system of monitoring wells at and around the Hidden Lane Landfill site. Test results from the monitoring wells indicated that EPA needed more information. In 2010-2011, nine additional monitoring wells were installed deeper into the groundwater to better characterize the trichloroethylene (TCE) contamination.

In 2012, test results from the deeper monitoring wells showed the location, depth and movement of the TCE plume and confirmed that it moves generally north from the landfill in the direction of the Potomac River.

EPA completed indoor vapor intrusion (VI) testing at 18 properties near the Hidden Lane Landfill Site in 2015. The purpose of the testing was to determine if vapors from the contaminated groundwater plume were getting inside homes. The results of the VI tests show that no vapors from the groundwater are entering homes. Additional testing may be needed in the future to ensure that indoor air continues to be protective of human health.

?In 2016, EPA conducted a treatability study using microorganisms that consume and degrade TCE. The results of this study are generally positive and may represent a path forward to address site related contamination. This and other treatment methods are being examined for future groundwater remediation.

EPA ID: VAD980829030

Site Name: Hidden Lane Landfill

Link to Site: [Web Link]

Additional Parking: Not Listed

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