Assessment & Remediation Services

Rule Engineering provides site assessment and remediation services drawing on a strong experience base in applying innovative technological strategies and sound scientific principles to develop solutions to environmental contamination problems. Our specialty is applying Risk-Based Corrective Action (RBCA) strategies beginning in early scoping of the site conceptual model to focus not only the remediation but the site assessment to manage actual or potential risks at the site. Rule has provided technical services in site assessment and remediation to a wide variety of sectors in the oil and gas industry including E&P, pipeline and transportation, refining, and retail marketing sites. Our experience working at this broad spectrum of facilities in various subsurface conditions has resulted in the successful closure of many contaminated sites that has resulted in repeat business from our clients recognizing our focus on saving money and eliminating liabilities from their bottom line.

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Plans, Permits, Compliance

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Site Assessment

The range of site assessment technologies that have been applied by Rule’s principals and staff include:

  • Standard soil and groundwater sampling using a variety of equipment such as direct push, hollow-stem augers drills, air-rotary hammer drills;
  • Sampling of E&P pits and tanks for closure assessments and closure reporting;
  • Routine groundwater monitoring and reporting for Monitored Natural Attenuation (MNA);
  • RBCA groundwater fate and transport modeling using a variety of software from MNA spreadsheets to finite difference numerical model MODFLOW;
  • Site visualization using Rockworks geologic cross-section and 3-D model software;
  • Rapid site-assessment using direct-push with mobile laboratory capabilities for real-time definition of soil and groundwater plumes;
  • Free product delineation using Laser Induced Flouresence (LIF) and geophysical resistivity surveys;
  • Spill response management and oversite for cost-effective rapid removal of releases;
  • Hydrogeologic assessments of local and regional aquifers and develop groundwater management plans.

Remediation

The range of remediation technologies that have been successfully applied include:

  • Air Sparging and Soil Vapor Extraction (AS/SVE) using both vertical and horizontal wells;
  • In-situ bioremediation using oxygen enhancement as well as other chemicals for anaerobic bioremediation including nitrate and sulfate amendments;
  • Landfarm remediation using traditional methods as well as enhanced biostimulation using proprietary microbes and nutrients;
  • In-situ chemical oxidation using a variety of chemicals based on site-specific bench-scale tests including Fenton’s Reagent, potasium permanganate, sodium peroxide and others;
  • Excavation of impacted soils at UST and E&P sites;
  • Groundwater pump and treat using vertical wells and engineered interceptor trenches;
  • Groundwater containment using soil-bentonite slurry walls;

Our capabilities include state-of-the-art data management, visualization, and modeling software, as well as GIS and CAD programs.

Assessment & Remediation Projects See All  >

Project:

E&P Groundwater Remediation

Location:

Western Colorado

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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…

Project:

Refinery Groundwater Containment System

Location:

Wyoming

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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. Data…

Project:

Refinery Groundwater Modeling

Location:

Wyoming

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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. A three-dimensional finite-difference groundwater model was used to assist with the design…

Project:

E&P Tank Closures

Location:

Northwestern Colorado

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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…

Project:

UST Remediation AS/SVE System

Location:

Denver Metro Area, Colorado

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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 to remediate gasoline constituents in the groundwater by directly volatilizing the constituents and supplying…

Project:

UST Remediation LNAPL Multiphase System

Location:

Denver Metro Area, Colorado

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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. Based on…