A multiphase extraction system was designed to address an extensive LNAPL plume spanning multiple off-site properties to dewater the upper low-permeability zone and allow product recovery and vapor extraction in the sand units where the NAPL was trapped.
Category: Assessment & Remediation Projects
UST Remediation AS/SVE System
An air sparge/soil vapor extraction (AS/SVE) remediation system was designed based on pilot test data. A total of 6 AS wells and 5 SVE wells were installed to remediate gasoline constituents in the groundwater by directly volatilizing the constituents and supplying oxygen for aerobic biodegradation.
E&P Tank Closures
Closures were completed on over 70 produced water holding tanks covering a large area in a remote part of northwestern Colorado. The replacement of the existing culvert pit holding tanks was coordinated with the oil and gas operator to install above-ground tanks with minimal downtime.
Refinery Groundwater Modeling
A groundwater model was developed to address corrective actions under the WDEQ to provide an understanding of remedial alternatives to prevent off-site migration of contaminated groundwater and LNAPL.
Refinery Groundwater Containment System
A containment system was designed under a Consent Order with the WDEQ to prevent off-site migration of contaminated groundwater and LNAPL. An alternative evaluation design was used to select a soil bentonite slurry wall with a series of interceptor.
E&P Groundwater Remediation
Groundwater contamination due to migration from a natural gas well along natural fractures resulted in benzene and methane in surface water and groundwater. After several years of operating a sparge system with little progress, Rule was selected to provide remediation for the site.
