Technology Status Report: In Situ Flushing - CLU-IN
Technology Status Report: In Situ Flushing - CLU-IN
Technology Status Report: In Situ Flushing - CLU-IN
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<strong>In</strong> <strong>Situ</strong> <strong>Flushing</strong> Project Summaries<br />
GWRTAC Case Study Database<br />
GWRTAC ID: FLSH0068<br />
Project Name: Petroleum Company (Residential Site Contamination)<br />
City: State/Province: QC<br />
Primary GWRTAC Personal<br />
Communication Source<br />
(Name/Organization):<br />
Project Summary:<br />
Charles Boulanger<br />
GSI Environnement<br />
<strong>Report</strong>(s)/Publication(s) (GWRTAC Source):<br />
GSI Environnement (formerly Ecosite, <strong>In</strong>c.), 965 Newton Ave., Office 270, Québec City, Qc.<br />
Canada G1P 4M4, Marketing <strong>In</strong>formation<br />
The following text was excerpted from marketing information provided by GSI Environnement<br />
(formerly Ecosite, <strong>In</strong>c.), 965 Newton Ave., Office 270, Québec City, Qc. Canada G1P 4M4 in<br />
August 1998:<br />
A residential property including several houses and utilities was located next to a former petroleum<br />
plant, and contaminated beneath houses with gasoling (BTEX) and diesel (MOG). Contaminants<br />
were present at concentrations of 10,500 ppm (MOG), 50 ppm (benzene), and 45 ppm (toluene).<br />
The 1,000 m3 (approx. 1,300 yd3) contaminated zone extended from 1,0 to 2.6 m (3.3 to 8.5 ft)<br />
below ground surface (bgs), and was comprised of organic soil (peat moss). Due to high levels of<br />
soil contamination remaining at the adjacent plant, hydraulic barriers to stop the migration of the<br />
contaminants to the residential area were provided. <strong>In</strong>stallation of a vertical cutoff wall, using<br />
synthetic liners and leachate drainage network, was also necessary to recover free phase present.<br />
Several technologies were combined to lower caontamination to residential levels. While<br />
proceeding with vacuum extraction and biosparging, <strong>In</strong>jecsol TM as used to recover the free phase<br />
and for in situ flushing of the contaminated soil beneath the houses. A surfactant was developed<br />
from a laboratory treatability study to allow highly efficient treatment. Work was completed leaving<br />
all existing infrastructures in place and ensuring long term safety for the residents. Contamination<br />
was lowered to concentrations of 1,000 ppm (MOG) over a 12 month project duration, at a cost of<br />
+/- $300,000. (Canadian).<br />
<strong>Report</strong>(s)/Publication(s) (Additional <strong>In</strong>formation Sources):<br />
None<br />
Ground-Water Remediation Technologies Analysis Center<br />
Operated by Concurrent Technologies Corporation<br />
Appendix - Page 135 of 164<br />
Copyright GWRTAC 1998<br />
Revision 1<br />
Tuesday, November 17, 1998