HVE Mobile Product Recovery / Soil Remediation: Newark, Delaware
Leggette, Brashears & Graham, Inc. (LBG) has installed a combination high vacuum extraction (HVE) and soil- vapor extraction (SVE) system designed to remediate petroleum and solvent impacted soil and to recover free-phase product at an operating manufacturing facility. The mobile and state-of-the-art system is extremely flexible and is able to operate under a wide range of remedial scenarios, making it perfectly suited to address impacts at all three areas of concern at this facility.
The key to the successful installation and operation of this remediation system was the close communication between two LBG offices, the client (at both corporate and plant levels), state regulatory agencies, and local city officials. This type of comprehensive approach to communication helped to insure that the requirements and preferences of all involved parties were satisfied. The net result was a remediation system which not only pleased all parties involved, but also a system that will effectively address three distinct releases in three separate areas of the facility.
SCOPE OF WORK
The system consists of an underground piping network from multiple extraction wells, a mobile treatment trailer, a product storage tank, and a catalytic oxidizer. The mobile trailer houses a complete HVE system including an oil-sealed liquid ring pump, a high efficiency vapor/liquid separator, an oil/water separator, and an automated manifold system allowing for rotation between extraction wells. Also included is a SVE system with a similar manifold set up. Coordination with the plant wastewater group allowed use of the in-house water treatment system, thus avoiding the installation of a costly groundwater treatment system. Once an area has achieved remedial goals, the system is easily moved to the next treatment area.
LBG partnered with equipment vendor to design a “one-of-a-kind” catalytic oxidizer capable of handling any combination of low/high flow, low/high vapor concentration. The use of the catox eliminated the necessity to modify the existing site-wide Title V air permit and the system operates at full capacity.
Since system operation began, a total of over 11 tons (22,686 pounds) of gasoline range organics have been recovered and product thickness has been significantly reduced and /or eliminated in most all wells. Engineering Services