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NPS Background Tributary Study - Samples collected from November 27 to Decmber 1, 2018.
Final NPS Tributary Sediment
Sampling Study Report
Anacostia River Sediment Project Site
National Capital Region
Prepared by
This National Park Service (NPS) https://app.box.com/s/6cqd7wu1a87fqkd3sggrwhsorr5xi48t/folder/217792400050 Tributary sampling investigation was conducted to support the
District of Columbia Department of Energy and Environment’s (DOEE) Anacostia River
Sediment Project (ARSP). DOEE, with participation by NPS, is conducting a Remedial
Investigation (RI) and Feasibility Study (FS) in accordance with the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) and the framework
provided in the National Oil and Hazardous Substances Pollution Contingency Plan (also known
as the National Contingency Plan or NCP) to address contaminated sediments located within the
riverbed of the tidal portion of the Anacostia River in Washington, D.C. (the Site). The riverbed
of the Anacostia is owned by the United States, and the National Capital Region of NPS
administers the riverbed resource within the boundaries of the District of Columbia (the District).
NPS conducted this tributary sampling investigation to obtain additional data from the five major
tributaries to the Anacostia River to assist in determination of anthropogenic background
concentrations4 of the ARSP contaminants of concern (COCs) in bottom sediment5 (0 to 0.5 feet
below the sediment surface [fbss]). This study was performed by The Johnson Company (JCO)
under contract to NPS.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>NPS conducted the tributary sediment sampling on November 27, 2018 through December 1,</SPAN></SPAN></P><P><SPAN><SPAN>2018. The location where each sediment sample was collected is shown on Figure 4. Table 3</SPAN></SPAN></P><P><SPAN><SPAN>provides the sample identifications, northing and easting, sampling date, sampling method, and a</SPAN></SPAN></P><P><SPAN><SPAN>description of the sampling location, in addition to any changes to the sampling location from the</SPAN></SPAN></P><P><SPAN><SPAN>proposed location. Samples were collected from four locations within HR, nine locations from</SPAN></SPAN></P><P><SPAN><SPAN>LBC, 18 locations from NEB, 14 locations from NWB, and ten locations from WB, for a total of</SPAN></SPAN></P><P><SPAN><SPAN>55 locations sampled. A total of three duplicate samples and three matrix spike (MS) and matrix</SPAN></SPAN></P><P><SPAN><SPAN>spike duplicate (MSD) samples were also collected during this investigation, resulting in a total</SPAN></SPAN></P><P><SPAN><SPAN>of 64 samples collected.</SPAN></SPAN></P><P><SPAN><SPAN /><SPAN>Collected bottom sediment samples (top 6 inches of sediment) from 55 locations in</SPAN></SPAN></P><P><SPAN><SPAN>the five major tributaries</SPAN></SPAN></P><P><SPAN><SPAN> Analyzed for following compounds:</SPAN></SPAN></P><P><SPAN><SPAN>PCB Congeners</SPAN></SPAN></P><P><SPAN><SPAN>Dioxins and Furans</SPAN></SPAN></P><P><SPAN><SPAN>Parent and alkylated PAHs</SPAN></SPAN></P><P><SPAN><SPAN>Pesticides</SPAN></SPAN></P><P><SPAN><SPAN>Mercury</SPAN></SPAN></P><P><SPAN><SPAN>Also analyzed for TOC and grain size</SPAN></SPAN></P></DIV></DIV></DIV>
Donna Davies
CERCLA Project Manager
484-663-1043
https://app.box.com/s/6cqd7wu1a87fqkd3sggrwhsorr5xi48t/folder/217792400050
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