- Client:U.S. Army Corps of Engineers
- Site:Longhorn Army Ammunition Plant
- Date:September 2002 | June 2004
Situation
From 2002 to 2007, MuniRem® Environmental was contracted by the Army Operation Support Command to demonstrate and apply SAMNAS to remediate perchlorate and co-contaminants, such as high explosives in soil at an open burn open detonation (OBOD) site, Longhorn AAP. This site’s underlying soil had been contaminated by byproducts of incomplete combustion/detonation of ammunition or energetic materials. The application of SAMNAS at Longhorn AAP in 2002 was the first field application of an in-situ bioremediation process to remediate perchlorate-contaminated soil at depth (i.e. in vadose zone source area).
Solution
MuniRem Environmental characterized the extent of soil contamination prior to conducting its treatment by SAMNAS. MuniRem® Environmental remediation process included tilling bacteria-rich nutrients into the contaminated topsoil to stimulate the degradation of the contaminants of concern; the SAMNAS solution were then progressively infiltrated through the ground. Traditionally expensive dig-and-treat methods are therefore not necessary. The monitoring of contamination levels was performed bi-monthly and confirmed the progressive decrease of contaminants of concern in the treated surface and deeper soils.
Result
