Environmental Remediation

Challenge:

• The site was a former bulk fuel terminal that covered 9-acres
• Estimated releases of 450,000-gallons of diesel/gasoline over the 25-year operating history

Results:

• LWR provided turn-key construction, operation and maintenance activities
• Performed site grading, installation of stormwater controls, and operation & maintenance of treatment system services on-site
• Construction and installation of an Electrical Resistance Heating (ERH) thermal treatment system
• Largest ERH remediation project ever constructed world wide
• ERH treatment process includes installation of electrodes, recovery and sensor wells throughout the treatment zone
• ERH thermal treatment utilized McMillan-McGee’s patented ET-DSPTM process to heat the groundwater and ground substrate
• Site subdivided into 4 treatment areas (1.5-acres each) to maximize effectiveness and more efficient tracking of results
• 3-phase electrical power is applied to the subsurface electrodes and heat the soil and groundwater to 100^oC for 5-6 months
• Heated groundwater and liquid-phase petroleum hydrocarbons and recovered and treated on-site
• Heated soil gas, steam, and gas-phase hydrocarbons are extracted via recovery wells, cooled, treated with thermal & catalytic oxidizers
• Zone 1 was proven the most effective and removed 214,000-pounds of hydrocarbon that was sent for recycling

Benefits:       

• This project was recognized as one of the National Groundwater Associations Outstanding Groundwater Remediation Projects
• Recovered liquids were recycled as fuel and did not create additional waste and liability for the client