Opal Group Inc.
Construction and Consulting Services
GE Superfund Site
EPA
Albuquerque, NM
This 100-acre Superfund site project involved remediation of soils and groundwater contaminated by chlorinated organic solvents for GE's Plant 83, Operable Unit 02. Opal's personnel were originally retained to design, construct, and operate two groundwater remediation systems for this Superfund site on a design/build basis to comply with the Record of Decision (ROD). Most recently Opal has rerouted and installed ground water extraction and reinjection well field piping as various areas of the ground water plumes have been cleaned. Work on this project included:
- Preparation and implementation of all work plans
- Investigation and characterization of the site and ground water system
- Obtaining all permits needed to install two groundwater treatment buildings, extraction wells, injection wells, and water treatment components.
- A full-scale groundwater extraction test on a deep aquifer unit to validate key design assumptions. Four large above-ground storage tanks were constructed to hold 1.5 million gallons of water extracted during the test. The water was subsequently treated, tested and reinjected into the deep groundwater aquifer.
- Design and construction of a large groundwater extraction and treatment system for both shallow and deep groundwater aquifers that treats up to 1.8 million gallons of water per day. The systems include 1) a 100-foot by 130-foot building to house treatment plant components and pumps, 2) a control room that monitors and adjusts over 70 control points in the process via SCADA system on a desktop computer, 3) four deep extraction wells installed to 550 feet deep, and 4) a treatment equipment train that includes two 30,000 gallon equalization tanks, 9 individual 50-horsepower pumps to transfer water, two individual 6-foot diameter 35-ft high air stripping towers, two individual 20,000 pound carbon filtration units, and a 20,000-gallon cone bottom tank for handling upset water.
- The large groundwater treatment plant is operated by two operators that ensure a 24-hour per day, 365 days per year operation.
Design and construction involved placing over a mile of dual-containment HDPE pipe in trench networks over the 100-acre area, several road cuts and a custom conveyance pipe rack constructed along the side of a bridge