submit Draft Interim Remedial Action Report for Area C Groundwater

3.0 CONSTRUCTION ACTIVITIES
The following sections provide a summary of the activities undertaken in the implementation of
the remedial action.
3.1 LTGM SAMPLING
One month prior to the groundwater sampling, many of the site wells were re-developed to
reduce the turbidity in the wells, With the exception of the sixteen Southern Boundary wells, the site wells
had not been sampled since 2001. The LGTM sampling program was implemented in January 2010.
The initial sampling event began on January 5, 2010. Groundwater samples were collected from 30
monitoring wells listed in Table 1. Samples were collected in accordance with the Picatinny Facility-Wide
Field Sampling Plan (FSP) (ICFKE, 1998a), the Picatinny Facility-Wide Quality Assurance Project Plan
(QAPP) (ICFKE, 1998b) and its addendum, and the Picatinny Facility-Wide Health and Safety Plan
(HASP) (ICFKE, 1998c). All samples were analyzed by Empirical Laboratories, Inc. for VOCs,
explosives, metals, dioxins and furans, and anions. Field- parameters (temperature, pH, oxidationreduction
potential (ORP), specific conductance, dissolved oxygen, and turbidity) were recorded during
sampling.
3.2 DISPOSITION OF WASTE
Purge water from well development and the initial semi-annual LTGM event was disposed of onsite,
following procedure described in the Facility-Wide FSP, Section 3.14.1 (ICFKE, 1998a).
W912DR-05-D-0026 3-1 Area C Interim Remedial Action
HTRW 04
Picatinny Arsenal, New Jersey
August 2010
Draft Document