Accession Number : AD1035605


Title :   Passive Biobarrier for Treating Co-Mingled Perchlorate and RDX in Groundwater at an Active Range


Descriptive Note : Technical Report,01 May 2010,30 Nov 2015


Corporate Author : CB and I Federal Services LLC Lawrenceville United States


Personal Author(s) : Hatzinger, Paul B ; Fuller,Mark E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1035605.pdf


Report Date : 31 Dec 2016


Pagination or Media Count : 107


Abstract : A subsurface biobarrier consisting of emulsified vegetable oil and a buffering agent was tested to enhance bioremediation and reduce the migration of co-mingled RDX, HMX, and perchlorate in a shallow, acidic groundwater aquifer at an operational military range in Dahlgren, VA. Despite heterogeneous subsurface lithology and low hydraulic conductivity in the test site aquifer, RDX, HMX, and perchlorate were reduced by 92% in a centerline of monitoring wells extending 40 ft downgradient of the biobarrier when adequate total organic carbon (TOC) was present from the added oil. The accumulation of toxic nitroso- degradation products MNX, DNX, and TNX from RDX was minimal. Moreover, the passive biobarrier resulted in no significant impacts to ongoing range activities. This field trial suggests that and emulsified oil biobarrier is a viable alternative to reduce the migration of co-mingled perchlorate and explosives in groundwater at this and similar ranges. Ideal range locations include open OB/OD areas, target areas, fast cookoff sites, EOD training areas, and other locations where high munition constituent concentrations are possible.


Descriptors :   BIOREMEDIATION , BARRIERS , GROUNDWATER , rdx , hmx , PERCHLORATES , BUFFERS , RANGES (FACILITIES) , MIGRATION , GEOCHEMISTRY , FIELD TESTS , monitoring , sampling , costs


Subject Categories : Water Pollution and Control
      Logistics, Military Facilities and Supplies


Distribution Statement : APPROVED FOR PUBLIC RELEASE