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Devens 2008 Monitoring Update
Citation:
FORD, R. G., S. D. ACREE, B. K. LIEN, K. G. SCHECKEL, R. R. ROSS, T. LUXTON, AND P. J. CLARK. Devens 2008 Monitoring Update. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/064, 2009.
Impact/Purpose:
To provide USEPA Region 1 with a technical evaluation of the distribution and flux of arsenic in shallow groundwater discharging into Plow Shop Pond, and the fate, transport and stability of arsenic in sediments and surface water within the portion of Plow Shop Pond that is the primary receptor for plume discharge (i.e., Red Cove).
Description:
This document presents results from site monitoring activities during calendar year 2008 at the EPA/ORD Red Cove Study Area relative to site characterization activities under Operable Units 01 (Shepley's Hill Landfill) and 11 (Plow Shop Pond) at the Fort Devens Superfund site. The purpose of this work was to provide EPA Region 1 with additional data to evaluate whether site characteristics have varied from conditions documented in the Ford et al. (2008), available at http://www.epa.gov/region1/superfund/sites/devens/296835.pdf. The purpose of this study was to provide USEPA Region 1 with a technical evaluation of the distribution and flux of arsenic in shallow groundwater discharging into Plow Shop Pond, and the fate, transport and stability of arsenic in sediments and surface water within the portion of Plow Shop Pond that is the primary receptor for plume discharge (i.e., Red Cove). This report summarizes hydrologic and chemistry data collected from existing and new monitoring locations during calendar year 2008. Activities were directed towards supplementing the datset presented in Ford et al. (2008) through acquisition of data from the following location categories: 1) locations previously sampled only once during calendar years 2006-2007, 2) existing locations within and adjacent to Shepley's Hill Landfill not previously sampled for a full suite of water chemistry parameters by EPA/ORD, and 3) new locations within Red Cove. The monitoring effort was divided between field-based sampling and laboratory-based characterization. Reporting and analysis of data resulting from this effort are presented in the following order: 1) Section 2 - hydrologic studies, and 2) Section 3 - groundwater and surface water chemistry. Monitoring data from this period of observation demonstrate the continued discharge of arsenic from groundwater into Red Cove.