This monthly Spring Valley Formerly Used Defense Site (FUDS) project summary is provided by the U.S. Army Corps of Engineers (USACE), Baltimore District, as part of its ongoing efforts to make information regarding the neighborhood investigation more accessible to community members, elected officials, Restoration Advisory Board members, and other interested stakeholders. Specifically, the monthly update is produced to provide those who follow the project with a current snapshot of regulatory partnering, planning and field activities, and is not designed to provide historical information or an overview of the project. Those individuals interested in broader project information, or who have follow-up questions regarding this update, are invited to contact our Community Outreach Team at 410-962-2210. You may also contact our project regulatory partners, Brian Barone (DOEE) at 202-499-0437 or Steven Hirsh (US EPA) at 215-814-3352.
Glenbrook Road NW
- In early-May, intrusive operations continued in Area B, which is alongside the shared property line with 4835 Glenbrook Road. In mid-May, the USACE Geologist confirmed saprolite had been reached at the recent excavation locations in Area B. Next, the team completed the removal of the driveway apron, including the excavation of soils from under the driveway slab, until they reached saprolite. The concrete rubble and excavated soil were removed from the site in disposal drums. The crew began and completed excavation operations in Area 5 at the end of May and no glassware was recovered or chemical agent detected in the disturbed soil excavation.
- Per our safety protocols, our crew stops daily excavation operations when temperatures reach 75 degrees. When it is too warm to excavate at the site, the crew focuses on other operational efforts on-site and at the Federal Property. The team completed the removal of the driveway apron including excavation of soils from under the driveway slab until they reached saprolite.
- Area 2 and Area 4 are the remaining low probability areas requiring further evaluation. For Area 4, the sampling team obtained confirmation samples from 8 locations in Area 4. All the samples were cleared for chemical agent and sent for low level agent analysis. Early next month, the crew will return to excavating the remaining arsenic and metals contaminated soil at the project site, starting with small locations within Area B. In mid-June, the crew is planning to return Area 2 to perform additional excavation to determine if the glassware remaining will dissipate. The effort is expected to take a few weeks to complete. Also, the site operations crew will resume working a 10 hour day, 4 days a week schedule, Monday-Thursday. The Area 4 sample data will be used to prepare a risk assessment. After excavation in Area 2, the team will assess next steps dependent upon our findings.
Site-Wide Remedial Action (RA)
- The Remedial Action continued with three main efforts: the investigation of the soils under the foundation of AU’s former Public Safety Building (PSB); the final geophysical surveys for potential WWI munitions at 92 residential properties and 13 city/federal properties; and the final drafting of the community educational mailer for munitions safety.
- At AU’s former PSB, the team continued to work with AU on basement slab removal plans and continued to prepare the site for the removal of the slab and soils underneath. The team anticipates the removal to begin in June once the gas line is removed.
- Fieldwork continued at several of the residential properties and city/federal properties this month. These efforts included finalizing arborist landscape appraisals with homeowners and approved plant removal. The advance geophysical classification surveys also continued at several properties.
- As a reminder, with an abundance of caution, the Corps will engage with the community and conduct a continuing education program until the program is deemed no longer necessary. Educational mailings were sent to the community, and will continue to be sent once a year in the spring with information about the boundaries of the FUDS, the potential possibility that a munition could be encountered, and instruction on what to do if a munition is found: use the 3Rs (Recognize, Retreat, Report) of explosive safety. The Army Corps intends to send these two mailing documents in early June.
- As a reminder, the formal Dispute Resolution with the regulatory Partners (DOEE and EPA) was suspended to discuss conducting additional groundwater data collection. USACE is moving forward with a new round of groundwater sampling in order to obtain more current information that will allow us to evaluate if there are any significant changes in groundwater concentrations since the last sampling event (4 years ago). The Corps is currently coordinating a work plan with the Partners that provides specific details on the planned sampling effort. After the work plan is finalized, USACE will complete the sampling, and the Partners will meet to discuss the results and to determine the requirements for any future groundwater sampling.
Restoration Advisory Board (RAB)
- The next RAB meeting will be held on Tuesday, July 9th at 7 p.m. These meeting are open to the public. Currently, the RAB meets every odd month in the ‘Undercroft’ meeting room at St. David’s Episcopal Church, 5150 Macomb Street NW, D.C.
For an archive of monthly updates, click here.