Science Inventory

Field Evaluation Of Arsenic Transport Across The Ground-Water/Surface Water Interface: Ground-Water Discharge And Iron Oxide Precipitation

Citation:

FORD, R. G., K. G. SCHECKEL, S. ACREE, R. Ross, B. Lien, P. Clark, AND B. SCROGGINS. Field Evaluation Of Arsenic Transport Across The Ground-Water/Surface Water Interface: Ground-Water Discharge And Iron Oxide Precipitation. Presented at American Chemical Society, 235th National Meeting, New Orleans, LA, April 06 - 10, 2008.

Impact/Purpose:

To examine the distribution of arsenic in ground water, surface water and sediments at a Superfund Site in the northeastern United States.

Description:

A field investigation was conducted to examine the distribution of arsenic in ground water, surface water, and sediments at a Superfund Site in the northeastern United States (see companion presentation by K. G. Scheckel et al). Ground-water discharge into the study area was characterized as having high ferrous iron and arsenic concentrations. Patterns in ground-water discharge were assessed via a network of vertically-nested wells, piezometers, and seepage meter deployments to map out small scale variations in discharge into the surface water body. These ground-water measurements were supplemented with vertical profiling of surface water chemistry and evaluation of arsenic sequestration during iron oxide precipitation at the sediment-water interface. The mineralogy of iron oxide precipitates was determined along with in-situ arsenic sorption characteristics. This information will be employed to inform decisions on the design of appropriate remedies to address the cleanup of ground water and sediments at the site.

Record Details:

Record Type: DOCUMENT (PRESENTATION/SLIDE)
Product Published Date: 04/09/2008
Record Last Revised: 10/03/2008
OMB Category: Other
Record ID: 190943