When it comes to environmental stewardship, actions speak louder than words. Provided here are just two examples of innovative, proactive steps Duke Realty took to remediate, reuse and recycle in development projects last year.
11600 Alameda Street, Lynwood, CA
In 2017, we acquired 8.67 acres in Lynwood, California, for development of a new 201,000-square-foot warehouse. The site needed extensive remediation since it was a heavy industrial site for more than 70 years and had both soil and groundwater contamination. The California Department of Toxic Substances Control approved our removal action work plan, and we began work to transform the land into a developable parcel. Among other things, we:
- removed all remaining concrete foundations and slabs and crushed and used them as engineered structural fill beneath the building pad;
- took nearly 6,500 tons of heavily impacted soil offsite for proper disposal;
- completed enhanced in-situ bioremediation with a large injection of solubilized substrate and emulsified oil to accelerate natural degradation of groundwater contaminants; and
- added a vapor barrier and under-slab pressurization system to provide additional protection against vapor intrusion, along with a vapor extraction system.
After the transformation was complete, we delivered the building and fully leased it by November of 2017. We will continue groundwater monitoring of the natural attenuation process to verify its effectiveness.
240 THE BLUFFS, ATLANTA, GA
240 The Bluffs is a redevelopment project involving the demolition of a vacant, obsolete, 270,000-square-foot office building. In keeping with our commitment to sustainability, we took steps to ensure that as much of the materials removed from the original structure were recycled or repurposed. We reused more than 13,000 tons of crushed brick and concrete as clean fill in non-critical areas on-site. We diverted other materials removed from the former building to salvage companies for recycling, including 5,900 tons of asphalt; 19,000 pounds of non-ferrous metals, such as copper pipe, wire, radiators, aluminum and breakers; and 900 tons of steel.