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Weekly Update for January 18

After clearing snow and ponded water early in the week, our crew continued the excavation operations at the Glenbrook Road project area.

On Monday, our crew joined our Glenbrook Road neighbors clearing snow after the first large snowfall this year.  For two days, crew members shoveled snow off of walkways and work areas, tents and all the equipment at both the Glenbrook Road project area as well as at the Federal Property.  The crew also pumped 2100 gallons of water from the 4825 Glenbrook Road excavation area. Intrusive operations were underway again by Wednesday, with the crew continuing to focus on removing the footers from the area where the last sections of retaining wall were at the property, which runs perpendicular to the 4825/4835 Glenbrook Road property line. This involves excavating the soil around the former wall, down to the footer, then removing and breaking the large cement blocks into small disposable pieces using a jack hammer. The cement pieces are then transported to the Federal property in rolloffs and prepared for disposal. On Friday, the team conducted their end of week site and equipment maintenance, and prepared for more wintry weather over the weekend.

The site will be secured and monitored this weekend through Monday, in observance of Martin Luther King Jr. Day.

When our crew returns next week on Tuesday, barring any weather delays, the team will continue the removal of the retaining wall, and excavating the soil down to bedrock along the shared property line.

Again, safety remains our number one priority. Throughout every phase of the project, all necessary precautions are taken to ensure the safety of the site workers, the residents of the community, and those walking and driving by.

As always, we encourage you to call or email us any time with questions and concerns. You can contact our Community Outreach Team at 410-962-0157 during normal business hours, or if you have a concern or see something unusual occurring at the site after hours, please use our emergency call service at 1-888-393-0059.

Monday morning site view after snowstorm

Morning preparations to resume operations including filling drums

Excavation underway week of Jan 18

UPDATE: Final ATSDR 4825 Glenbrook Road Report Released

Final ATSDR Report Released: We wanted to share that the final Agency for Toxic Substances and Disease Registry (ATSDR) report "Health Consultation - An Exposure and Health Effects Evaluation of Former Workers and Residents to Chemical Contamination at 4825 Glenbrook Road within the Spring Valley Formerly Used Defense Site (FUDS) Washington, District of Columbia" was released August 26, 2016.  A summary of the public comments and ATSDR responses are in an appendix of the finalized document. For more information on the final report, including the report itself, you can visit their website at: http://www.atsdr.cdc.gov/sites/springvalley/index.html

Background: In 2010, the Corps of Engineers asked ATSDR, a part of the US Department of Health and Human Service's Center for Disease Control (CDC), to develop the report, which evaluated past exposure scenarios at the 4825 Glenbrook Road property, specifically for two groups: construction and other workers who developed the property (1992-1993), and the family who lived at the residence from 1993 until 1999.


ATSDR released a draft of the report earlier this year, taking feedback from the public regarding their evaluation during a public comment period that ended on June 20, 2016.

Project Overview

The project site is a residential property located at 4825 Glenbrook Road N.W. within the Spring Valley Formerly Used Defense Site in Northwest Washington, D.C. During the World War I era, the property was part of a larger area known as the American University Experiment Station (AUES), where the U.S. government researched and tested chemical agents, equipment and munitions. AUES related waste, including more than 500 munition items, 400 pounds of laboratory glassware and 100 tons of contaminated soil, have been recovered and safely removed from the property during investigations from 2000-2002 and then again from 2007-2010. In August 2010, several agencies within the Department of Defense as well as the regulatory partners, the U.S. Environmental Protection Agency and District Department of the Environment, made the decision to separate the 4825 Glenbrook Road property from the Spring Valley neighborhood site to expedite the cleanup process.

After thorough reviews and a public comment period, the Corps of Engineers, with concurrence from the partners and American University (property owner), selected the alternative to remove the house, cleanup, and restore the property to residential standards, providing for unrestricted future use of the property. This approach is the most effective and protective of human health and the environment. 

Cleanup Implementation

 

Crews removed the house (Nov. 29 - 30, 2012) systematically from top to bottom using an excavator. After the demolition, crews began preparing the site for the high probability operations. Historical and field data were used to indicate the high probability areas of the property with a greater likelihood of containing AUES debris and/or glassware items.

Site preparation included low probability test pitting in several areas in the backyard, utility relocation, general site preparations, and installation of the engineering controls needed to safely perform the high probability work. The engineering controls included an Engineering Control Structure (a 60’x80’x27’ tent) that fully enclosed the high probability excavation areas, a chemical agent filtration system that filtered the air leaving the control structure, and a continuous air monitoring system. All of the materials removed during the high probability phase were safely disposed.

Additionally, the Corps of Engineers developed a Shelter-in-Place program as an added layer of protection to the public.

High probability operations began Sept. 23, 2013 and concluded on May 26, 2016. Additional low probability operations will begin in early fall 2016. The goal is to completely remove any remaining AUES debris and restore the property to residential standards by summer 2017.

Learn more about the work through a video tour of the site:  http://youtu.be/yVws5UnBuZw. You also can see the actual excavation work in this video: http://www.youtube.com/watch?v=rK0LzWtzum8.


Information Repository

The Information Repository is located at the Tenley-Friendship Branch Library, 4450 Wisconsin Ave. N.W., Washington, D.C.

Hard copies and digital records of key project documents can be found upstairs in the Reference Section.  The document collection includes a variety of materials created since the start of the project, 20 years ago. Check with the reference librarian to direct you to our shelves of materials.

Also, on your next visit to the library, ask at the Reference Desk for the Spring Valley FUDS large binder, which has a table of contents and almost a hundred disks that contain years of digital records available for research and review. These disks must be checked out from the librarian and are only available for use on the library’s public computers during your visit.  If there is a piece of information you cannot locate in the library, please contact the Community Outreach Team at 410-962-0157.

Additional archived documents not found in the library or here on the Web site, can be found at http://springvalley.ertcorp.com.

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Contact Information

Baltimore District Corporate Communication
410-962-2809
cenab-cc@usace.army.mil