Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS

Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Author      Title/Abstract      


HORIZONTAL AIR SPARGING TO TREAT PETROLEUM HYDROCARBON IMPACTED GROUNDWATER
Author: Mark E. Gagnon, Clifford I. Roberts
Date: 6/503
Bioremediation Conference 2003

Traditional air sparging (AS) and soil vapor extraction (SVE) systems consist of the installation of vertical wells based on a pre-determined radius of influence. By installing horizontal AS points in several locations within one continuous horizontal borehole, a large areal extent of the contaminant plume can be treated and cost savings are easily realized. A former retail gasoline site in southwest Idaho had been subjected to 10 years of intermittent pump and treat remediation. During this time the contaminant plume migrated off site to an adjacent property. Access to this plume via traditional vertical remediation points was limited because a large portion of the plume was beneath an off-site building. Current remedial efforts consisted of installation two directional-drilled horizontal borings located parallel to the axis of plume migration and the installation of six horizontal AS points, two horizontal biosparging points and associated SVE system components to capture fugitive vapors generated by the AS system.

This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.