Environment, Federal Government, North America, United States, Water
Flexible and Sustainable Design Expedites Groundwater Cleanup
Old Roosevelt Field treatment system earns LEED certification
Chlorinated solvents from a former military and commercial airport contaminated a sole-source aquifer used as a public water supply at the Old Roosevelt Field contaminated groundwater Superfund site, which includes a large shopping mall, an office complex and residential areas in Garden City, New York. The U.S. Environmental Protection Agency (EPA) required a fast-track design to qualify for special legislation funding, while ensuring that the treatment approach could address the results of an ongoing investigation.
CDM Smith expedited design of the remedial action to enable EPA to meet the “shovel-ready” requirement for construction funding under the American Recovery and Reinvestment Act (ARRA). Our flexible design enabled construction of the treatment system to advance while accommodating treatment train changes based on the results of an ongoing investigation to characterize a southern plume of groundwater contamination identified during the predesign investigation. This staged approach facilitated early implementation of the northern plume remedy to prevent further contaminant migration to two nearby public supply wells, while finalizing the delineation and treatment requirements for the new southern plume.
In addition, the design included an iron removal system as an optional bid item, pending further study to determine if this specialized treatment system would be required. Once sample data confirmed that iron removal would not be required, we were able to reduce the treatment building size by 55 percent. Trenchless technology for installing extraction well piping and relocating utilities yielded savings and minimized disruption compared to conventional open cut methods.
CDM Smith applied sustainable design principles to incorporate many green features, including:
- Use of fly ash in the concrete mixture for foundation walls, footings and base slab;
- A pre-engineered building with 70 percent recycled steel;
- Energy-saving components, such as high-efficiency motors, lighting and other electrical equipment and a geothermal heat pump, with 100 percent of the electricity from renewable sources; and
- Substitution of recycled concrete for crushed stone for access roads and parking areas.
Through this adaptive approach, not only was the ARRA funding secured, but the reduced treatment building footprint and the trenchless piping methods combined for $600,000 in savings. In addition, the treatment building earned LEED certification from the U.S. Green Building Council, which is rare for such treatment facilities.