Summary of water- and sediment-quality data for Anacostia River well sites sampled in July-August 2002

Abstract

10. Results of quality-control data for n-Hexane Extractable Material (oil and grease), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids, and total suspended solids samples in ground water collected in July

Hydrogeology and shallow groundwater quality in the tidal Anacostia River watershed, Washington, D.C.

“…Shallow cores were collected within the tidal Anacostia River watershed study area in 2002, 2005, and 2008 (tables 1, 2). Coring was conducted at selected sites within and near the tidal Anacostia River in July 2002 (Miller and Klohe, 2003;. Cores were collected along the river near the Cores were collected using a vibracore drill rig mounted on a truck or (for the offshore sites) a hovercraft.…”

“…Cores were collected along the river near the Cores were collected using a vibracore drill rig mounted on a truck or (for the offshore sites) a hovercraft. Coring was conducted to refusal (typically about 30 to 40 ft below land surface), and cores were collected in 5-ft increments (Miller and Klohe, 2003;. Additional cores were collected within the watershed at 13 locations in July and August 2005 (AC Aa 2, AC Ab 3, WE Ba 9, WE Ba 10, WE Ca 33, WE Ca 34, WE Ca 38, WE Cb 11, WE Cb 12, WE Cc 3, WE Bc 8, WW Bc 9, and WW Cc 37 on fig.…”

“…Deeper cores (greater than 40 ft deep) were correlated throughout the study area. Sediment from selected cores was also analyzed for selected chemical constituents, including nutrients, metals, pesticides, PCBs, and VOCs (Miller and Klohe, 2003).…”

“…Seventeen monitoring wells were constructed and developed at selected coring locations. Five of these wells (WE Bb 3, WE Bb 4, WE Cb 5, WE Cb 6, and WE Ca 29) were constructed at onshore coring locations near the Anacostia River in July 2002 (Miller and Klohe, 2003; (fig. 2, table 1).…”

“…December 2005 from 17 monitoring wells in three geologic settings (Klohe and Debrewer, 2007); 5 of these wells had previously been sampled in August 2002 (WE Bb 3, WE Bb 4, WE Cb 5, WE Cb 6, and WE Ca 29) (Miller and Klohe, 2003). Wells were purged (generally a minimum of three well volumes) until pH, temperature, dissolved oxygen, turbidity, and specific conductance stabilized prior to sampling.…”